#!/usr/bin/env python3 # # Copyright (C) 2019 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/>. # # This migration script will check if there is a allow-from directive configured # for the dns forwarding service - if not, the node will be created with the old # default values of 0.0.0.0/0 and ::/0 import sys from vyos.configtree import ConfigTree if (len(sys.argv) < 1): print("Must specify file name!") sys.exit(1) file_name = sys.argv[1] with open(file_name, 'r') as f: config_file = f.read() config = ConfigTree(config_file) base = ['service', 'dns', 'forwarding'] if not config.exists(base): # Nothing to do sys.exit(0) else: if not config.exists(base + ['allow-from']): config.set(base + ['allow-from'], value='0.0.0.0/0', replace=False) config.set(base + ['allow-from'], value='::/0', replace=False) try: with open(file_name, 'w') as f: f.write(config.to_string()) except OSError as e: print("Failed to save the modified config: {}".format(e)) sys.exit(1)