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#!/usr/bin/env python3
#
# Copyright VyOS maintainers and contributors <maintainers@vyos.io>
#
# 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/>.
import glob
from sys import exit
from vyos.defaults import directories
from vyos.utils.io import ask_yes_no
from vyos.utils.process import cmdl
from vyos.utils.commit import commit_in_progress
if not ask_yes_no('Do you really want to remove the existing SSH host keys?'):
exit(0)
if commit_in_progress():
print('Cannot restart SSH while a commit is in progress')
exit(1)
conf_mode_dir = directories['conf_mode']
host_key_files = glob.glob('/etc/ssh/ssh_host_*')
if not host_key_files:
# Match cmdl()'s default behavior of raising OSError on a non-zero exit
# code (rm would fail with "No such file or directory" if the shell glob
# had not expanded to any files)
raise OSError('No such file or directory: /etc/ssh/ssh_host_*')
cmdl(['rm', '-v'] + host_key_files)
cmdl(['dpkg-reconfigure', 'openssh-server'])
cmdl([f'{conf_mode_dir}/service_ssh.py'])
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