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# Copyright 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/>.
# T8098: rijndael-cbc@lysator.liu.se was removed in OpenSSH 6.7 which is used
# starting with VyOS 1.4. Also rename "ciphers" -> "cipher" to follow our
# CLI guidelines to use singular when possible
from vyos.configtree import ConfigTree
base = ['service', 'ssh']
old_path = base + ['ciphers']
new_path = base + ['cipher']
def migrate(config: ConfigTree) -> None:
if not config.exists(base):
# Nothing to do
return
if config.exists(old_path):
config.rename(old_path, new_path[-1])
if config.exists(new_path):
deprecated_cipher = 'rijndael-cbc@lysator.liu.se'
for cipher in config.return_values(new_path):
if cipher == deprecated_cipher:
config.delete_value(new_path, value=deprecated_cipher)
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