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#!/usr/bin/env python3
#
# Copyright (C) 2022 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
from sys import exit
from vyos.configtree import ConfigTree
from vyos.template import is_ipv4
from vyos.template import is_ipv6
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)
# IKE changes, T4118:
if config.exists(base + ['ike-group']):
for ike_group in config.list_nodes(base + ['ike-group']):
# replace 'ipsec ike-group <tag> mobike disable'
# => 'ipsec ike-group <tag> disable-mobike'
mobike = base + ['ike-group', ike_group, 'mobike']
if config.exists(mobike):
if config.return_value(mobike) == 'disable':
config.set(base + ['ike-group', ike_group, 'disable-mobike'])
config.delete(mobike)
# replace 'ipsec ike-group <tag> ikev2-reauth yes'
# => 'ipsec ike-group <tag> ikev2-reauth'
reauth = base + ['ike-group', ike_group, 'ikev2-reauth']
if config.exists(reauth):
if config.return_value(reauth) == 'yes':
config.delete(reauth)
config.set(reauth)
else:
config.delete(reauth)
# ESP changes
# replace 'ipsec esp-group <tag> compression enable'
# => 'ipsec esp-group <tag> compression'
if config.exists(base + ['esp-group']):
for esp_group in config.list_nodes(base + ['esp-group']):
compression = base + ['esp-group', esp_group, 'compression']
if config.exists(compression):
if config.return_value(compression) == 'enable':
config.delete(compression)
config.set(compression)
else:
config.delete(compression)
# PEER changes
if config.exists(base + ['site-to-site', 'peer']):
for peer in config.list_nodes(base + ['site-to-site', 'peer']):
# replace: 'peer <tag> id x'
# => 'peer <tag> local-id x'
if config.exists(base + ['site-to-site', 'peer', peer, 'authentication', 'id']):
config.rename(base + ['site-to-site', 'peer', peer, 'authentication', 'id'], 'local-id')
# For the peer '@foo' set remote-id 'foo' if remote-id is not defined
if peer.startswith('@'):
if not config.exists(base + ['site-to-site', 'peer', peer, 'authentication', 'remote-id']):
tmp = peer.replace('@', '')
config.set(base + ['site-to-site', 'peer', peer, 'authentication', 'remote-id'], value=tmp)
# replace: 'peer <tag> force-encapsulation enable'
# => 'peer <tag> force-udp-encapsulation'
force_enc = base + ['site-to-site', 'peer', peer, 'force-encapsulation']
if config.exists(force_enc):
if config.return_value(force_enc) == 'enable':
config.delete(force_enc)
config.set(base + ['site-to-site', 'peer', peer, 'force-udp-encapsulation'])
else:
config.delete(force_enc)
# add option: 'peer <tag> remote-address x.x.x.x'
remote_address = peer
if peer.startswith('@'):
remote_address = 'any'
config.set(base + ['site-to-site', 'peer', peer, 'remote-address'], value=remote_address)
# Peer name it is swanctl connection name and shouldn't contain dots or colons
# rename peer:
# peer 192.0.2.1 => peer peer_192-0-2-1
# peer 2001:db8::2 => peer peer_2001-db8--2
# peer @foo => peer peer_foo
re_peer_name = re.sub(':|\.', '-', peer)
if re_peer_name.startswith('@'):
re_peer_name = re.sub('@', '', re_peer_name)
new_peer_name = f'peer_{re_peer_name}'
config.rename(base + ['site-to-site', 'peer', peer], new_peer_name)
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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