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#!/usr/bin/env python3
#
# Copyright (C) 2024 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/>.
#
# Adds an explicit old default for 'server topology'
# to keep old configs working as before even though the default has changed.
from vyos.configtree import ConfigTree
def migrate(config: ConfigTree) -> None:
if not config.exists(['interfaces', 'openvpn']):
# Nothing to do
return
ovpn_intfs = config.list_nodes(['interfaces', 'openvpn'])
for i in ovpn_intfs:
mode = config.return_value(['interfaces', 'openvpn', i, 'mode'])
if mode != 'server':
# If it's a client or a site-to-site OpenVPN interface,
# the topology setting is not applicable
# and will cause commit errors on load,
# so we must not change such interfaces.
continue
else:
# The default OpenVPN server topology was changed from net30 to subnet
# because net30 is deprecated and causes problems with Windows clients.
# We add 'net30' to old configs if topology is not set there
# to ensure that if anyone relies on net30, their configs work as before.
topology_path = ['interfaces', 'openvpn', i, 'server', 'topology']
if not config.exists(topology_path):
config.set(topology_path, value='net30', replace=False)
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