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ntp.py
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ntp.py
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#!/usr/bin/env python3
#
# Copyright (C) 2018-2021 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 os
from vyos.config import Config
from vyos.configverify import verify_vrf
from vyos import ConfigError
from vyos.util import call
from vyos.template import render
from vyos import airbag
airbag.enable()
config_file = r'/run/ntpd/ntpd.conf'
systemd_override = r'/etc/systemd/system/ntp.service.d/override.conf'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['system', 'ntp']
if not conf.exists(base):
return None
ntp = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
ntp['config_file'] = config_file
return ntp
def verify(ntp):
# bail out early - looks like removal from running config
if not ntp:
return None
if 'allow_clients' in ntp and 'server' not in ntp:
raise ConfigError('NTP server not configured')
verify_vrf(ntp)
return None
def generate(ntp):
# bail out early - looks like removal from running config
if not ntp:
return None
render(config_file, 'ntp/ntpd.conf.j2', ntp)
render(systemd_override, 'ntp/override.conf.j2', ntp)
return None
def apply(ntp):
if not ntp:
# NTP support is removed in the commit
call('systemctl stop ntp.service')
if os.path.exists(config_file):
os.unlink(config_file)
if os.path.isfile(systemd_override):
os.unlink(systemd_override)
# Reload systemd manager configuration
call('systemctl daemon-reload')
if ntp:
call('systemctl restart ntp.service')
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)

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