mirror of
https://github.com/freedombox/FreedomBox.git
synced 2026-01-28 08:03:36 +00:00
afb00f98ab
- Closes #366 and closes #304 (all sub-tasks). - Start new process group with setsid() by sending start_new_session=True - Detach from parent process fds by closing all FDs and attaching stdin, stdou and stderr to /dev/null. - Don't wait for the process to complete. - This allows for upgrading Plinth while upgrades are trigged from Plinth itself. - Show log of upgrade exection instead of output and error log of the process which can no longer be collected. This has the advantage of showing automatic executions also. - Rewrite the mechanism to detect whether upgrades can be run. It is now based on whether the package manager is busy. This has the advantage of working properly if other apt processes are running, automatic upgrades are running, etc. - Busy status works even if Plinth is restarted while upgrades are in progress. - More descriptive messages showing that upgrades don't have to be triggered manually. - Warn that other packages can't be installed while upgrades are running, which may take a long time. - Warn the users of potential temporary unavailability of Plinth/Apache2.
144 lines
4.3 KiB
Python
Executable File
144 lines
4.3 KiB
Python
Executable File
#!/usr/bin/python3
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#
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# This file is part of Plinth.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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"""
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Configures or runs unattended-upgrades
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"""
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import argparse
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import os
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import re
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import subprocess
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import sys
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CONF_FILE = '/etc/apt/apt.conf.d/50unattended-upgrades'
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AUTO_CONF_FILE = '/etc/apt/apt.conf.d/20auto-upgrades'
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def parse_arguments():
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"""Return parsed command line arguments as dictionary"""
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parser = argparse.ArgumentParser()
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subparsers = parser.add_subparsers(dest='subcommand', help='Sub command')
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# Run unattended-upgrades
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subparsers.add_parser('run', help='Upgrade packages on the system')
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# Check if automatic upgrades are enabled
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subparsers.add_parser('check-auto',
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help='Check if automatic upgrades are enabled')
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# Enable automatic upgrades
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subparsers.add_parser('enable-auto', help='Enable automatic upgrades')
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# Disable automatic upgrades
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subparsers.add_parser('disable-auto', help='Disable automatic upgrades.')
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return parser.parse_args()
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def subcommand_run(_):
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"""Run unattended-upgrades"""
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try:
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setup()
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except FileNotFoundError:
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print('Error: Could not configure unattended-upgrades.',
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file=sys.stderr)
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sys.exit(1)
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try:
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subprocess.Popen(
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['unattended-upgrades', '-v'],
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stdin=subprocess.DEVNULL, stdout=subprocess.DEVNULL,
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stderr=subprocess.DEVNULL, close_fds=True,
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start_new_session=True)
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except FileNotFoundError:
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print('Error: unattended-upgrades is not available.', file=sys.stderr)
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sys.exit(2)
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except Exception as error:
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print('Error: {0}'.format(error), file=sys.stderr)
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sys.exit(3)
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def subcommand_check_auto(_):
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"""Check if automatic upgrades are enabled"""
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arguments = ['apt-config', 'shell', 'UpdateInterval',
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'APT::Periodic::Update-Package-Lists']
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try:
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output = subprocess.check_output(arguments).decode()
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except subprocess.CalledProcessError as error:
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print('Error: {0}'.format(error), file=sys.stderr)
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sys.exit(1)
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update_interval = 0
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match = re.match(r"UpdateInterval='(.*)'", output)
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if match:
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update_interval = int(match.group(1))
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print(bool(update_interval))
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def subcommand_enable_auto(_):
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"""Enable automatic upgrades"""
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try:
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setup()
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except FileNotFoundError:
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print('Error: Could not configure unattended-upgrades.',
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file=sys.stderr)
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sys.exit(1)
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with open(AUTO_CONF_FILE, 'w') as conffile:
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conffile.write('APT::Periodic::Update-Package-Lists "1";\n')
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conffile.write('APT::Periodic::Unattended-Upgrade "1";\n')
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def subcommand_disable_auto(_):
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"""Disable automatic upgrades"""
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try:
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os.rename(AUTO_CONF_FILE, AUTO_CONF_FILE + '.disabled')
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except FileNotFoundError:
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print('Already disabled.')
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def setup():
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"""Sets unattended-upgrades config to upgrade any package from Debian."""
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with open(CONF_FILE, 'r') as conffile:
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lines = conffile.readlines()
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for line in lines:
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if re.match(r'\s*"o(rigin)?=Debian";', line):
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return # already configured
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with open(CONF_FILE, 'w') as conffile:
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for line in lines:
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conffile.write(line)
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if re.match(r'\s*Unattended-Upgrade::Origins-Pattern\s+{', line):
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conffile.write(' "origin=Debian";\n')
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def main():
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"""Parse arguments and perform all duties"""
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arguments = parse_arguments()
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subcommand = arguments.subcommand.replace('-', '_')
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subcommand_method = globals()['subcommand_' + subcommand]
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subcommand_method(arguments)
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if __name__ == '__main__':
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main()
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