mirror of
https://github.com/freedombox/FreedomBox.git
synced 2026-01-21 07:55:00 +00:00
920d083301
This is optional and does not affect normal installations. However, when performing configuration migration in FreedomBox (due to unattended-upgrades refusing it), it is useful as a part of strategy to read configuration, force install new configuration files and apply configuration again. This option can be used on such cases. Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org> Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
140 lines
4.6 KiB
Python
Executable File
140 lines
4.6 KiB
Python
Executable File
#!/usr/bin/python3
|
|
#
|
|
# This file is part of FreedomBox.
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Affero General Public License as
|
|
# published by the Free Software Foundation, either version 3 of the
|
|
# License, or (at your option) any later version.
|
|
#
|
|
# 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 Affero General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Affero General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
"""
|
|
Wrapper to handle package installation with apt-get.
|
|
"""
|
|
|
|
import argparse
|
|
import os
|
|
import subprocess
|
|
import sys
|
|
from importlib import import_module
|
|
|
|
from plinth import cfg
|
|
|
|
LOCK_FILE = '/var/lib/dpkg/lock'
|
|
|
|
|
|
def parse_arguments():
|
|
"""Return parsed command line arguments as dictionary."""
|
|
parser = argparse.ArgumentParser()
|
|
subparsers = parser.add_subparsers(dest='subcommand', help='Sub command')
|
|
|
|
subparsers.add_parser('update', help='update the package lists')
|
|
|
|
subparser = subparsers.add_parser('install', help='install packages')
|
|
subparser.add_argument(
|
|
'--skip-recommends', action='store_true',
|
|
help='whether to skip installing recommended packages')
|
|
subparser.add_argument(
|
|
'--force-configuration', choices=['new', 'old'],
|
|
help='force old/new configuration files during install')
|
|
subparser.add_argument(
|
|
'module', help='name of module for which package is being installed')
|
|
subparser.add_argument('packages', nargs='+',
|
|
help='list of packages to install')
|
|
subparsers.add_parser('is-package-manager-busy',
|
|
help='Return whether package manager is busy')
|
|
|
|
subparsers.required = True
|
|
return parser.parse_args()
|
|
|
|
|
|
def _run_apt_command(arguments):
|
|
"""Run apt-get with provided arguments."""
|
|
# Ask apt-get to output its progress to file descriptor 3.
|
|
command = [
|
|
'apt-get', '--assume-yes', '--quiet=2', '--option', 'APT::Status-Fd=3'
|
|
] + arguments
|
|
|
|
# Duplicate stdout to file descriptor 3 for this process.
|
|
os.dup2(1, 3)
|
|
|
|
# Pass on file descriptor 3 instead of closing it. Close stdout
|
|
# so that regular output is ignored.
|
|
env = os.environ.copy()
|
|
env['DEBIAN_FRONTEND'] = 'noninteractive'
|
|
process = subprocess.run(command, stdin=subprocess.DEVNULL,
|
|
stdout=subprocess.DEVNULL, close_fds=False,
|
|
env=env)
|
|
sys.exit(process.returncode)
|
|
|
|
|
|
def subcommand_update(arguments):
|
|
"""Update apt package lists."""
|
|
_run_apt_command(['update'])
|
|
|
|
|
|
def subcommand_install(arguments):
|
|
"""Install packages using apt-get."""
|
|
try:
|
|
_assert_managed_packages(arguments.module, arguments.packages)
|
|
except Exception as exception:
|
|
print('Access check failed:', exception, file=sys.stderr)
|
|
sys.exit(99)
|
|
|
|
extra_arguments = []
|
|
if arguments.skip_recommends:
|
|
extra_arguments.append('--no-install-recommends')
|
|
|
|
if arguments.force_configuration == 'old':
|
|
extra_arguments += [
|
|
'-o', 'Dpkg::Options::=--force-confdef', '-o',
|
|
'Dpkg::Options::=--force-confold'
|
|
]
|
|
elif arguments.force_configuration == 'new':
|
|
extra_arguments += ['-o', 'Dpkg::Options::=--force-confnew']
|
|
|
|
_run_apt_command(['install'] + extra_arguments + arguments.packages)
|
|
|
|
|
|
def _assert_managed_packages(module, packages):
|
|
"""Check that list of packages are in fact managed by module."""
|
|
cfg.read()
|
|
module_file = os.path.join(cfg.config_dir, 'modules-enabled', module)
|
|
|
|
with open(module_file, 'r') as file_handle:
|
|
module_path = file_handle.read().strip()
|
|
|
|
module = import_module(module_path)
|
|
for package in packages:
|
|
assert package in module.managed_packages
|
|
|
|
|
|
def subcommand_is_package_manager_busy(_):
|
|
"""Return whether package manager is busy.
|
|
This command uses the `lsof` command to check whether the dpkg lock file
|
|
is open which indicates that the package manager is busy"""
|
|
try:
|
|
subprocess.check_output(['lsof', LOCK_FILE])
|
|
except subprocess.CalledProcessError:
|
|
sys.exit(-1)
|
|
|
|
|
|
def main():
|
|
"""Parse arguments and perform all duties."""
|
|
arguments = parse_arguments()
|
|
|
|
subcommand = arguments.subcommand.replace('-', '_')
|
|
subcommand_method = globals()['subcommand_' + subcommand]
|
|
subcommand_method(arguments)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|