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service_ids_fastnetmon.py
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service_ids_fastnetmon.py
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#!/usr/bin/env python3
#
# Copyright (C) 2018-2020 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 sys import exit
from vyos.config import Config
from vyos import ConfigError
from vyos.util import call
from vyos.template import render
from vyos import airbag
airbag.enable()
config_file = r'/etc/fastnetmon.conf'
networks_list = r'/etc/networks_list'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['service', 'ids', 'ddos-protection']
fastnetmon = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
return fastnetmon
def verify(fastnetmon):
if not fastnetmon:
return None
if not "mode" in fastnetmon:
raise ConfigError('ddos-protection mode is mandatory!')
if not "network" in fastnetmon:
raise ConfigError('Required define network!')
if not "listen_interface" in fastnetmon:
raise ConfigError('Define listen-interface is mandatory!')
if "alert_script" in fastnetmon:
if os.path.isfile(fastnetmon["alert_script"]):
# Check script permissions
if not os.access(fastnetmon["alert_script"], os.X_OK):
raise ConfigError('Script {0} does not have permissions for execution'.format(fastnetmon["alert_script"]))
else:
raise ConfigError('File {0} does not exists!'.format(fastnetmon["alert_script"]))
def generate(fastnetmon):
if not fastnetmon:
if os.path.isfile(config_file):
os.unlink(config_file)
if os.path.isfile(networks_list):
os.unlink(networks_list)
return
render(config_file, 'ids/fastnetmon.j2', fastnetmon)
render(networks_list, 'ids/fastnetmon_networks_list.j2', fastnetmon)
return None
def apply(fastnetmon):
if not fastnetmon:
# Stop fastnetmon service if removed
call('systemctl stop fastnetmon.service')
else:
call('systemctl restart fastnetmon.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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service_ids_fastnetmon.py (2 KB)

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