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# Copyright 2023-2024 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library. If not, see <http://www.gnu.org/licenses/>.
# T4916: Rewrite IPsec peer authentication and psk migration
from vyos.configtree import ConfigTree
base = ['vpn', 'ipsec']
def migrate(config: ConfigTree) -> None:
if not config.exists(base):
# Nothing to do
return
# PEER changes
if config.exists(base + ['site-to-site', 'peer']):
for peer in config.list_nodes(base + ['site-to-site', 'peer']):
peer_base = base + ['site-to-site', 'peer', peer]
# replace: 'ipsec site-to-site peer <tag> authentication pre-shared-secret xxx'
# => 'ipsec authentication psk <tag> secret xxx'
if config.exists(peer_base + ['authentication', 'pre-shared-secret']):
tmp = config.return_value(peer_base + ['authentication', 'pre-shared-secret'])
config.delete(peer_base + ['authentication', 'pre-shared-secret'])
config.set(base + ['authentication', 'psk', peer, 'secret'], value=tmp)
# format as tag node to avoid loading problems
config.set_tag(base + ['authentication', 'psk'])
# Get id's from peers for "ipsec auth psk <tag> id xxx"
if config.exists(peer_base + ['authentication', 'local-id']):
local_id = config.return_value(peer_base + ['authentication', 'local-id'])
config.set(base + ['authentication', 'psk', peer, 'id'], value=local_id, replace=False)
if config.exists(peer_base + ['authentication', 'remote-id']):
remote_id = config.return_value(peer_base + ['authentication', 'remote-id'])
config.set(base + ['authentication', 'psk', peer, 'id'], value=remote_id, replace=False)
if config.exists(peer_base + ['local-address']):
tmp = config.return_value(peer_base + ['local-address'])
config.set(base + ['authentication', 'psk', peer, 'id'], value=tmp, replace=False)
if config.exists(peer_base + ['remote-address']):
tmp = config.return_values(peer_base + ['remote-address'])
if tmp:
for remote_addr in tmp:
if remote_addr == 'any':
remote_addr = '%any'
config.set(base + ['authentication', 'psk', peer, 'id'], value=remote_addr, replace=False)
# get DHCP peer interface as psk dhcp-interface
if config.exists(peer_base + ['dhcp-interface']):
tmp = config.return_value(peer_base + ['dhcp-interface'])
config.set(base + ['authentication', 'psk', peer, 'dhcp-interface'], value=tmp)
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