Sunil Mohan Adapa 07e2c0ce14 Don't use actions to check if service is running
- To check whether a service is running does not require root
  privileges.  This can directly be done from a module without any
  action.

- Since actions are allowed to be run using sudo, introducing
  unnecessary sub-commands increases attack surface.

- Simple functions calls are unnecessarily being converted to command
  line invocations and involve parsing response.

- There is a lot of repeated code because of this that can be
  eliminated.

- To generalize this, we need to make all non-root system operations
  directly from module instead of delegating to action commands.
2015-07-19 19:54:13 -04:00

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#!/usr/bin/python3
# -*- mode: python -*-
#
# This file is part of Plinth.
#
# 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/>.
#
"""
Configuration helper for Privoxy server.
"""
import argparse
import re
from plinth import action_utils
CONFIG_FILE = '/etc/privoxy/config'
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('setup',
help='Perform Privoxy configuration setup')
subparsers.add_parser('get-enabled',
help='Get whether Privoxy service is enabled')
subparsers.add_parser('enable', help='Enable Privoxy service')
subparsers.add_parser('disable', help='Disable Privoxy service')
return parser.parse_args()
def subcommand_setup(_):
"""Setup configuration for the first time."""
with open(CONFIG_FILE, 'r') as conffile:
lines = conffile.readlines()
with open(CONFIG_FILE, 'w') as conffile:
written = False
for line in lines:
if re.match(r'#?listen-address', line) and not written:
conffile.write('listen-address [::]:8118\n')
written = True
else:
conffile.write(line)
if not written:
conffile.write('listen-address [::]:8118')
action_utils.service_restart('privoxy')
def subcommand_get_enabled(_):
"""Get whether service is enabled."""
is_enabled = action_utils.service_is_enabled('privoxy')
print('yes' if is_enabled else 'no')
def subcommand_enable(_):
"""Start service."""
action_utils.service_enable('privoxy')
def subcommand_disable(_):
"""Stop service."""
action_utils.service_disable('privoxy')
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()