# This file is part of Scapy
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# Scapy is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# any later version.
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#
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# Scapy 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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Scapy. If not, see <http://www.gnu.org/licenses/>.
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# scapy.contrib.description = VLAN Query Protocol
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# scapy.contrib.status = loads
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from scapy.packet import *
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from scapy.fields import *
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from scapy.layers.inet import UDP
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class VQP(Packet):
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name = "VQP"
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fields_desc = [
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ByteField("const", 1),
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ByteEnumField("type", 1, {
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1:"requestPort", 2:"responseVLAN",
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3:"requestReconfirm", 4:"responseReconfirm"
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}),
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ByteEnumField("errorcodeaction", 0, {
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0:"none",3:"accessDenied",
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4:"shutdownPort", 5:"wrongDomain"
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}),
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ByteEnumField("unknown", 2, {
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2:"inGoodResponse", 6:"inRequests"
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}),
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IntField("seq",0),
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]
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class VQPEntry(Packet):
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name = "VQPEntry"
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fields_desc = [
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IntEnumField("datatype", 0, {
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3073:"clientIPAddress", 3074:"portName",
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3075:"VLANName", 3076:"Domain", 3077:"ethernetPacket",
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3078:"ReqMACAddress", 3079:"unknown",
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3080:"ResMACAddress"
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}),
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FieldLenField("len", None),
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ConditionalField(IPField("datatom", "0.0.0.0"),
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lambda p:p.datatype==3073),
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ConditionalField(MACField("data", "00:00:00:00:00:00"),
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lambda p:p.datatype==3078),
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ConditionalField(MACField("data", "00:00:00:00:00:00"),
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lambda p:p.datatype==3080),
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ConditionalField(StrLenField("data", None,
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length_from=lambda p:p.len),
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lambda p:p.datatype not in [3073, 3078, 3080]),
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]
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def post_build(self, p, pay):
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if self.len is None:
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l = len(p.data)
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p = p[:2]+struct.pack("!H",l)+p[4:]
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return p
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bind_layers(UDP, VQP, sport=1589)
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bind_layers(UDP, VQP, dport=1589)
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bind_layers(VQP, VQPEntry, )
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bind_layers(VQPEntry, VQPEntry, )
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