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#!/usr/bin/env python3
#
# Copyright (C) 2019 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 argparse
from sys import exit
from vyos.util import cmd
parser = argparse.ArgumentParser()
parser.add_argument("--validate", action="store", help="Check if timezone is valid")
if __name__ == '__main__':
args = parser.parse_args()
if args.validate:
tz_data = cmd('find /usr/share/zoneinfo/posix -type f -or -type l | sed -e s:/usr/share/zoneinfo/posix/::')
tz_data = tz_data.split('\n')
# if timezone can't be found in list it's invalid
if args.validate not in tz_data:
exit(1)
else:
parser.print_help()
exit(1)
exit(0)
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