Custom 802.11 Vendor Specific packet

[Hoolean]

Hello! Thank you for the excellent library :)

Scapy has specialised subclasses of Dot11EltVendorSpecific that interpret and parse the generic info field of the parent class:

scapy/scapy/layers/dot11.py

Lines 1428 to 1456 in c15a670

	class Dot11EltVendorSpecific(Dot11Elt):
	name = "802.11 Vendor Specific"
	match_subclass = True
	fields_desc = [
	ByteEnumField("ID", 221, _dot11_id_enum),
	ByteField("len", None),
	OUIField("oui", 0x000000),
	StrLenField("info", "", length_from=lambda x: x.len - 3)
	]
	@classmethod
	def dispatch_hook(cls, _pkt=None, *args, **kargs):
	if _pkt:
	oui = struct.unpack("!I", b"\x00" + _pkt[2:5])[0]
	if oui == 0x0050f2: # Microsoft
	type_ = orb(_pkt[5])
	if type_ == 0x01:
	# MS WPA IE
	return Dot11EltMicrosoftWPA
	elif type_ == 0x02:
	# MS WME IE TODO
	# return Dot11EltMicrosoftWME
	pass
	elif type_ == 0x04:
	# MS WPS IE TODO
	# return Dot11EltWPS
	pass
	return Dot11EltVendorSpecific
	return cls

For a project using Scapy as a library, how easiest can this be extended to cover an additional custom subclass? Is this possible with the current implementation and, if not, is another workaround accessible?

[gpotter2]

Currently you're right, this isn't super extensible.
You need to update the file directly (feel free to contribute !).

[Hoolean]

@gpotter2 Cheers for the speedy reply :) I've put up a PR at #4660