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# SPDX-License-Identifier: ISC
# Copyright 2023 6WIND S.A.
# Authored by Farid Mihoub <farid.mihoub@6wind.com>
#
import ipaddress
import struct
class BGPOpen:
UNPACK_STR = "!16sHBBHH4sB"
@classmethod
def dissect(cls, data):
(
marker,
length,
open_type,
version,
my_as,
hold_time,
bgp_id,
optional_params_len,
) = struct.unpack_from(cls.UNPACK_STR, data)
data = data[struct.calcsize(cls.UNPACK_STR) + optional_params_len :]
# XXX: parse optional parameters
return data, {
"version": version,
"my_as": my_as,
"hold_time": hold_time,
"bgp_id": ipaddress.ip_address(bgp_id),
"optional_params_len": optional_params_len,
}
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