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# Copyright 2023 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/>.
import os
from vyos.defaults import directories
config_file = os.path.join(directories['config'], 'config.boot')
def read_saved_value(path: list):
if not isinstance(path, list) or not path:
return ''
from vyos.configtree import ConfigTree
try:
with open(config_file) as f:
config_string = f.read()
ct = ConfigTree(config_string)
except Exception:
return ''
if not ct.exists(path):
return ''
res = ct.return_values(path)
return res[0] if len(res) == 1 else res
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