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#!/usr/bin/env python3
#
# Copyright (C) 2021 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
import sys
from vyos.template import is_ipv4
pattern = '(.*):(.*):(.*)'
if __name__ == '__main__':
if len(sys.argv) != 2:
sys.exit(1)
value = sys.argv[1].split(':')
if not len(value) == 3:
sys.exit(1)
if not (re.match(pattern, sys.argv[1]) and
(is_ipv4(value[0]) or value[0].isdigit()) and (value[1].isdigit() or value[1] == '*')):
sys.exit(1)
sys.exit(0)
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