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#!/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/>.
# - move all pool to named pools
# 'start-stop' migrate to namedpool 'default-range-pool'
# 'subnet' migrate to namedpool 'default-subnet-pool'
# 'default-subnet-pool' is the next pool for 'default-range-pool'
import os
from sys import argv
from sys import exit
from vyos.configtree import ConfigTree
from vyos.base import Warning
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()
config = ConfigTree(config_file)
base = ['vpn', 'l2tp', 'remote-access']
pool_base = base + ['client-ip-pool']
if not config.exists(base):
exit(0)
if not config.exists(pool_base):
exit(0)
default_pool = ''
range_pool_name = 'default-range-pool'
if config.exists(pool_base + ['start']) and config.exists(pool_base + ['stop']):
def is_legalrange(ip1: str, ip2: str, mask: str):
from ipaddress import IPv4Interface
interface1 = IPv4Interface(f'{ip1}/{mask}')
interface2 = IPv4Interface(f'{ip2}/{mask}')
return interface1.network.network_address == interface2.network.network_address and interface2.ip > interface1.ip
start_ip = config.return_value(pool_base + ['start'])
stop_ip = config.return_value(pool_base + ['stop'])
if is_legalrange(start_ip, stop_ip,'24'):
ip_range = f'{start_ip}-{stop_ip}'
config.set(pool_base + [range_pool_name, 'range'], value=ip_range, replace=False)
default_pool = range_pool_name
else:
Warning(
f'L2TP client-ip-pool range start-ip:{start_ip} and stop-ip:{stop_ip} can not be migrated.')
config.delete(pool_base + ['start'])
config.delete(pool_base + ['stop'])
if config.exists(pool_base + ['subnet']):
for subnet in config.return_values(pool_base + ['subnet']):
config.set(pool_base + [range_pool_name, 'range'], value=subnet, replace=False)
config.delete(pool_base + ['subnet'])
default_pool = range_pool_name
if default_pool:
config.set(base + ['default-pool'], value=default_pool)
# format as tag node
config.set_tag(pool_base)
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)
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