#!/usr/bin/env python3 # # Copyright (C) 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 re from sys import argv, exit if __name__ == '__main__': if len(argv) != 2: exit(1) vrf = argv[1] length = len(vrf) if length not in range(1, 16): exit(1) # Treat loopback interface "lo" explicitly. Adding "lo" explicitly to the # following regex pattern would deny any VRF name starting with lo - thuse # local-vrf would be illegal - and that we do not want. if vrf == "lo": exit(1) pattern = r'^(?!(bond|br|dum|eth|lan|eno|ens|enp|enx|gnv|ipoe|l2tp|l2tpeth|\ vtun|ppp|pppoe|peth|tun|vti|vxlan|wg|wlan|wwan|\d)\d*(\.\d+)?(v.+)?).*$' if not re.match(pattern, vrf): exit(1) exit(0)