77 lines
2.7 KiB
Python
77 lines
2.7 KiB
Python
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# 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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import struct
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from scapy.packet import Packet, bind_layers
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from scapy.fields import ByteEnumField, ByteField, ConditionalField, \
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FieldLenField, IntEnumField, IntField, IPField, MACField, StrLenField
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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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tmp_len = len(p.data)
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p = p[:2] + struct.pack("!H", tmp_len) + 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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