2017-07-04 21:12:41 +00:00
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# −*− coding: UTF−8 −*−
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#/**
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# * Software Name : pycrate
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2019-02-25 10:26:10 +00:00
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# * Version : 0.4
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2017-07-04 21:12:41 +00:00
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# *
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2017-11-12 13:43:59 +00:00
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# * Copyright 2016. Benoit Michau. ANSSI.
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2017-07-04 21:12:41 +00:00
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# *
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2018-04-15 19:47:21 +00:00
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# * This library is free software; you can redistribute it and/or
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# * modify it under the terms of the GNU Lesser General Public
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# * License as published by the Free Software Foundation; either
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# * version 2.1 of the License, or (at your option) any later version.
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# *
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# * This library is distributed in the hope that it will be useful,
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2017-07-04 21:12:41 +00:00
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of
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2018-04-15 19:47:21 +00:00
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# * 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
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# * License along with this library; if not, write to the Free Software
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# * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# * MA 02110-1301 USA
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2017-07-04 21:12:41 +00:00
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# *
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# *--------------------------------------------------------
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# * File Name : pycrate_ether/ARP.py
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# * Created : 2016-04-27
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# * Authors : Benoit Michau
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# *--------------------------------------------------------
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#*/
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from pycrate_core.elt import Envelope, REPR_RAW, REPR_HEX, REPR_BIN
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from pycrate_core.base import *
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from pycrate_core.repr import *
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class ARP(Envelope):
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_GEN = (
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Uint16('hw_type', val=1, rep=REPR_HEX),
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Uint16('prot', rep=REPR_HEX),
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Uint8('hw_size'), # val automated
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Uint8('prot_size'), # val automated
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Uint16('op', val=1, dic={1:'request', 2:'reply'}),
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Buf('src_mac', val=6*b'\0', rep=REPR_HEX), # bl automated
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Buf('src', val=4*b'\0', rep=REPR_HEX), # bl automated
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Buf('dst_mac', val=6*b'\0', rep=REPR_HEX), # bl automated
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Buf('dst', val=4*b'\0', rep=REPR_HEX) # bl automated
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)
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def __init__(self, *args, **kwargs):
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Envelope.__init__(self, *args, **kwargs)
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self[2].set_valauto(self._set_hwsz_val)
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self[3].set_valauto(self._set_protsz_val)
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self[5].set_blauto(self._set_addrmac_bl)
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self[7].set_blauto(self._set_addrmac_bl)
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self[6].set_blauto(self._set_addr_bl)
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self[8].set_blauto(self._set_addr_bl)
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def _set_hwsz_val(self):
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return (self[5].get_bl() + self[7].get_bl()) // 16
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def _set_protsz_val(self):
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return (self[6].get_bl() + self[8].get_bl()) // 16
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def _set_addrmac_bl(self):
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return 8 * self[2].get_val()
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def _set_addr_bl(self):
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return 8 * self[3].get_val()
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