#!/usr/bin/env python3 # # Copyright (C) 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/>. import os from sys import exit from vyos.config import Config from vyos.configverify import verify_interface_exists from vyos.utils.process import call from vyos.template import render from vyos import ConfigError from vyos import airbag airbag.enable() systemd_service = 'ndppd.service' ndppd_config = '/run/ndppd/ndppd.conf' def get_config(config=None): if config: conf = config else: conf = Config() base = ['service', 'ndp-proxy'] if not conf.exists(base): return None ndpp = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True, with_recursive_defaults=True) return ndpp def verify(ndpp): if not ndpp: return None if 'interface' in ndpp: for interface, interface_config in ndpp['interface'].items(): verify_interface_exists(interface) if 'rule' in interface_config: for rule, rule_config in interface_config['rule'].items(): if rule_config['mode'] == 'interface' and 'interface' not in rule_config: raise ConfigError(f'Rule "{rule}" uses interface mode but no interface defined!') if rule_config['mode'] != 'interface' and 'interface' in rule_config: if interface_config['mode'] != 'interface' and 'interface' in interface_config: raise ConfigError(f'Rule "{rule}" does not use interface mode, thus interface can not be defined!') return None def generate(ndpp): if not ndpp: return None render(ndppd_config, 'ndppd/ndppd.conf.j2', ndpp) return None def apply(ndpp): if not ndpp: call(f'systemctl stop {systemd_service}') if os.path.isfile(ndppd_config): os.unlink(ndppd_config) return None call(f'systemctl reload-or-restart {systemd_service}') return None if __name__ == '__main__': try: c = get_config() verify(c) generate(c) apply(c) except ConfigError as e: print(e) exit(1)