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#!/usr/bin/env python3
#
# Copyright (C) 2021-2023 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/>.
# Script called up strongswan to bring the VTI interface up/down based on
# the state of the IPSec tunnel. Called as vti_up_down vti_intf_name
import os
import sys
from syslog import syslog
from syslog import openlog
from syslog import LOG_PID
from syslog import LOG_INFO
from vyos.configquery import ConfigTreeQuery
from vyos.configdict import get_interface_dict
from vyos.ifconfig import VTIIf
from vyos.utils.process import call
from vyos.utils.network import get_interface_config
if __name__ == '__main__':
verb = os.getenv('PLUTO_VERB')
connection = os.getenv('PLUTO_CONNECTION')
interface = sys.argv[1]
openlog(ident=f'vti-up-down', logoption=LOG_PID, facility=LOG_INFO)
syslog(f'Interface {interface} {verb} {connection}')
if verb in ['up-client', 'up-host']:
call('sudo ip route delete default table 220')
vti_link = get_interface_config(interface)
if not vti_link:
syslog(f'Interface {interface} not found')
sys.exit(0)
vti_link_up = (vti_link['operstate'] != 'DOWN' if 'operstate' in vti_link else False)
if verb in ['up-client', 'up-host']:
if not vti_link_up:
conf = ConfigTreeQuery()
_, vti = get_interface_dict(conf.config, ['interfaces', 'vti'], interface)
if 'disable' not in vti:
tmp = VTIIf(interface)
tmp.update(vti)
else:
syslog(f'Interface {interface} is admin down ...')
elif verb in ['down-client', 'down-host']:
if vti_link_up:
call(f'sudo ip link set {interface} down')
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