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#!/usr/bin/env python3
#
# Copyright (C) 2020 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/>.
from sys import argv,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()
config = ConfigTree(config_file)
def merge_npt(config,base,rule):
merge_base = ['nat66','source','rule',rule]
# Configure migration functions
if config.exists(base + ['description']):
tmp = config.return_value(base + ['description'])
config.set(merge_base + ['description'],value=tmp)
if config.exists(base + ['disable']):
tmp = config.return_value(base + ['disable'])
config.set(merge_base + ['disable'],value=tmp)
if config.exists(base + ['outbound-interface']):
tmp = config.return_value(base + ['outbound-interface'])
config.set(merge_base + ['outbound-interface'],value=tmp)
if config.exists(base + ['source','prefix']):
tmp = config.return_value(base + ['source','prefix'])
config.set(merge_base + ['source','prefix'],value=tmp)
if config.exists(base + ['translation','prefix']):
tmp = config.return_value(base + ['translation','prefix'])
config.set(merge_base + ['translation','prefix'],value=tmp)
if not config.exists(['nat']):
# Nothing to do
exit(0)
else:
if not config.exists(['nat', 'nptv6']):
exit(0)
for rule in config.list_nodes(['nat', 'nptv6', 'rule']):
base = ['nat', 'nptv6', 'rule', rule]
# Merge 'nat nptv6' to 'nat66 source'
merge_npt(config,base,rule)
# Delete the original NPT configuration
config.delete(['nat','nptv6']);
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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