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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/>.
# T5154: allow only one ip address per family for parameter 'listen-address'
# Allow only one interface for parameter 'interface'
# If more than one are specified, remove such entries
import sys
from vyos.configtree import ConfigTree
from vyos.template import is_ipv4
from vyos.template import is_ipv6
if (len(sys.argv) < 1):
print("Must specify file name!")
sys.exit(1)
file_name = sys.argv[1]
with open(file_name, 'r') as f:
config_file = f.read()
config = ConfigTree(config_file)
base_path = ['service', 'ntp']
if not config.exists(base_path):
# Nothing to do
sys.exit(0)
if config.exists(base_path + ['listen-address']) and (len([addr for addr in config.return_values(base_path + ['listen-address']) if is_ipv4(addr)]) > 1):
for addr in config.return_values(base_path + ['listen-address']):
if is_ipv4(addr):
config.delete_value(base_path + ['listen-address'], addr)
if config.exists(base_path + ['listen-address']) and (len([addr for addr in config.return_values(base_path + ['listen-address']) if is_ipv6(addr)]) > 1):
for addr in config.return_values(base_path + ['listen-address']):
if is_ipv6(addr):
config.delete_value(base_path + ['listen-address'], addr)
if config.exists(base_path + ['interface']):
if len(config.return_values(base_path + ['interface'])) > 1:
config.delete(base_path + ['interface'])
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))
sys.exit(1)
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