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bgp-regular-community
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#!/usr/bin/env python3
# Copyright 2019-2022 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <http://www.gnu.org/licenses/>.
from argparse import ArgumentParser
from sys import exit
from vyos.template import is_ipv4
COMM_MAX_2_OCTET: int = 65535
if __name__ == '__main__':
# add an argument with community
parser: ArgumentParser = ArgumentParser()
parser.add_argument('community', type=str)
args = parser.parse_args()
community: str = args.community
if community.count(':') != 1:
print("Invalid community format")
exit(1)
try:
# try to extract community parts from an argument
comm_left: int = int(community.split(':')[0])
comm_right: int = int(community.split(':')[1])
# check compatibilities of left and right parts
if 0 <= comm_left <= COMM_MAX_2_OCTET \
and 0 <= comm_right <= COMM_MAX_2_OCTET:
exit(0)
except Exception:
# fail if something was wrong
print("Invalid community format")
exit(1)
# fail if none of validators catched the value
print("Invalid community format")
exit(1)

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