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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()):
        sys.exit(1)

    sys.exit(0)