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# Copyright 2020-2024 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/>.
# VyOS 1.2 crux allowed configuring a lower or upper case loglevel. This
# is no longer supported as the input data is validated and will lead to
# an error. If user specifies an upper case logleve, make it lowercase
from vyos.configtree import ConfigTree
base = ['service', 'ssh']
def migrate(config: ConfigTree) -> None:
if not config.exists(base):
# Nothing to do
return
path_loglevel = base + ['loglevel']
if config.exists(path_loglevel):
# red in configured loglevel and convert it to lower case
tmp = config.return_value(path_loglevel).lower()
# VyOS 1.2 had no proper value validation on the CLI thus the
# user could use any arbitrary values - sanitize them
if tmp not in ['quiet', 'fatal', 'error', 'info', 'verbose']:
tmp = 'info'
config.set(path_loglevel, value=tmp)
# T4273: migrate ssh cipher list to multi node
path_ciphers = base + ['ciphers']
if config.exists(path_ciphers):
tmp = []
# get curtrent cipher list - comma delimited
for cipher in config.return_values(path_ciphers):
tmp.extend(cipher.split(','))
# delete old cipher suite representation
config.delete(path_ciphers)
for cipher in tmp:
config.set(path_ciphers, value=cipher, replace=False)
# T4273: migrate ssh key-exchange list to multi node
path_kex = base + ['key-exchange']
if config.exists(path_kex):
tmp = []
# get curtrent cipher list - comma delimited
for kex in config.return_values(path_kex):
tmp.extend(kex.split(','))
# delete old cipher suite representation
config.delete(path_kex)
for kex in tmp:
config.set(path_kex, value=kex, replace=False)
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