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#!/usr/bin/env python3
#
# Copyright (C) 2024 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import re
from sys import argv,exit
if __name__ == '__main__':
if len(argv) != 2:
exit(1)
input = argv[1]
try:
# ethertype can be in the range 1 - 65535
if int(input) in range(1, 65536):
exit(0)
except ValueError:
pass
pattern = "!?\\b(all|ip|ipv6|ipx|802.1Q|802_2|802_3|aarp|aoe|arp|atalk|dec|lat|localtalk|rarp|snap|x25)\\b"
if re.match(pattern, input):
exit(0)
print(f'Error: {input} is not a valid ether type or protocol.')
exit(1)
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