#!/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/>. # T5779: system conntrack timeout custom # Before: # Protocols tcp, udp and icmp allowed. When using udp it did not work # Only ipv4 custom timeout rules # Now: # Valid protocols are only tcp or udp. # Extend functionality to ipv6 and move ipv4 custom rules to new node: # set system conntrack timeout custom [ipv4 | ipv6] rule <rule> ... from sys import argv from sys import exit from vyos.configtree import ConfigTree if len(argv) < 2: print("Must specify file name!") exit(1) file_name = argv[1] with open(file_name, 'r') as f: config_file = f.read() base = ['system', 'conntrack'] config = ConfigTree(config_file) if not config.exists(base): # Nothing to do exit(0) if config.exists(base + ['timeout', 'custom', 'rule']): for rule in config.list_nodes(base + ['timeout', 'custom', 'rule']): if config.exists(base + ['timeout', 'custom', 'rule', rule, 'protocol', 'tcp']): config.set(base + ['timeout', 'custom', 'ipv4', 'rule']) config.copy(base + ['timeout', 'custom', 'rule', rule], base + ['timeout', 'custom', 'ipv4', 'rule', rule]) config.delete(base + ['timeout', 'custom', 'rule']) 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)) exit(1)