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#!/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/>.
# Remove deprecated strongSwan options from VyOS CLI
# - vpn ipsec nat-traversal enable
# - vpn ipsec nat-networks allowed-network
from sys import argv
from sys import exit
from vyos.configtree import ConfigTree
if (len(argv) < 1):
print("Must specify file name!")
exit(1)
file_name = argv[1]
with open(file_name, 'r') as f:
config_file = f.read()
base = ['vpn', 'ipsec']
config = ConfigTree(config_file)
if not config.exists(base):
# Nothing to do
exit(0)
# Delete CLI nodes whose config options got removed by strongSwan
for cli_node in ['nat-traversal', 'nat-networks']:
if config.exists(base + [cli_node]):
config.delete(base + [cli_node])
# Remove options only valid in Openswan
if config.exists(base + ['site-to-site', 'peer']):
for peer in config.list_nodes(base + ['site-to-site', 'peer']):
if not config.exists(base + ['site-to-site', 'peer', peer, 'tunnel']):
continue
for tunnel in config.list_nodes(base + ['site-to-site', 'peer', peer, 'tunnel']):
# allow-public-networks - Sets a value in ipsec.conf that was only ever valid in Openswan on kernel 2.6
nat_networks = base + ['site-to-site', 'peer', peer, 'tunnel', tunnel, 'allow-nat-networks']
if config.exists(nat_networks):
config.delete(nat_networks)
# allow-nat-networks - Also sets a value only valid in Openswan
public_networks = base + ['site-to-site', 'peer', peer, 'tunnel', tunnel, 'allow-public-networks']
if config.exists(public_networks):
config.delete(public_networks)
try:
with open(file_name, 'w') as f:
f.write(config.to_string())
except OSError as e:
print(f'Failed to save the modified config: {e}')
exit(1)
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