#!/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/>. import os from sys import exit from vyos.config import Config from vyos.configdict import dict_merge from vyos.template import render_to_string from vyos.util import dict_search from vyos.xml import defaults from vyos import ConfigError from vyos import frr from vyos import airbag airbag.enable() def get_config(config=None): if config: conf = config else: conf = Config() base = ['protocols', 'rpki'] rpki = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True) # Bail out early if configuration tree does not exist if not conf.exists(base): rpki.update({'deleted' : ''}) return rpki # 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) rpki = dict_merge(default_values, rpki) return rpki def verify(rpki): if not rpki: return None if 'cache' in rpki: preferences = [] for peer, peer_config in rpki['cache'].items(): for mandatory in ['port', 'preference']: if mandatory not in peer_config: raise ConfigError(f'RPKI cache "{peer}" {mandatory} must be defined!') if 'preference' in peer_config: preference = peer_config['preference'] if preference in preferences: raise ConfigError(f'RPKI cache with preference {preference} already configured!') preferences.append(preference) if 'ssh' in peer_config: files = ['private_key_file', 'public_key_file', 'known_hosts_file'] for file in files: if file not in peer_config['ssh']: raise ConfigError('RPKI+SSH requires username, public/private ' \ 'keys and known-hosts file to be defined!') filename = peer_config['ssh'][file] if not os.path.exists(filename): raise ConfigError(f'RPKI SSH {file.replace("-","-")} "{filename}" does not exist!') return None def generate(rpki): if not rpki: return rpki['new_frr_config'] = render_to_string('frr/rpki.frr.j2', rpki) return None def apply(rpki): bgp_daemon = 'bgpd' # Save original configuration prior to starting any commit actions frr_cfg = frr.FRRConfig() frr_cfg.load_configuration(bgp_daemon) frr_cfg.modify_section('^rpki', stop_pattern='^exit', remove_stop_mark=True) if 'new_frr_config' in rpki: frr_cfg.add_before(frr.default_add_before, rpki['new_frr_config']) frr_cfg.commit_configuration(bgp_daemon) return None if __name__ == '__main__': try: c = get_config() verify(c) generate(c) apply(c) except ConfigError as e: print(e) exit(1)