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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/>.
from sys import exit
from vyos.config import Config
from vyos.configdict import dict_merge
from vyos.util import cmd
from vyos.util import run
from vyos.util import process_named_running
from vyos.template import render
from vyos.xml import defaults
from vyos import ConfigError
from vyos import airbag
airbag.enable()
conntrack_config = r'/etc/modprobe.d/vyatta_nf_conntrack.conf'
sysctl_file = r'/run/sysctl/10-vyos-conntrack.conf'
def resync_conntrackd():
tmp = run('/usr/libexec/vyos/conf_mode/conntrack_sync.py')
if tmp > 0:
print('ERROR: error restarting conntrackd!')
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['system', 'conntrack']
conntrack = conf.get_config_dict(base, key_mangling=('-', '_'),
get_first_key=True)
# We have gathered the dict representation of the CLI, but there are default
# options which we need to update into the dictionary retrived.
default_values = defaults(base)
conntrack = dict_merge(default_values, conntrack)
return conntrack
def verify(conntrack):
return None
def generate(conntrack):
render(conntrack_config, 'conntrack/vyos_nf_conntrack.conf.tmpl', conntrack)
render(sysctl_file, 'conntrack/sysctl.conf.tmpl', conntrack)
return None
def apply(conntrack):
if process_named_running('conntrackd'):
# Reload conntrack-sync daemon to fetch new sysctl values
resync_conntrackd()
# We silently ignore all errors
# See: https://bugzilla.redhat.com/show_bug.cgi?id=1264080
cmd(f'sysctl -f {sysctl_file}')
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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