Source code for qubesadmin.tools.qvm_service

# coding=utf-8
#
# The Qubes OS Project, https://www.qubes-os.org/
#
# Copyright (C) 2010-2016  Joanna Rutkowska <[email protected]>
# Copyright (C) 2016       Wojtek Porczyk <[email protected]>
# Copyright (C) 2017       Marek Marczykowski-Górecki
#                                           <[email protected]>
#
# This program 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 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#

'''qvm-service - Manage domain's services'''

from __future__ import print_function

import argparse
import sys

import qubesadmin
import qubesadmin.exc
import qubesadmin.tools

parser = qubesadmin.tools.QubesArgumentParser(
    vmname_nargs=1,
    argument_default=argparse.SUPPRESS,
    description='manage domain\'s services')

parser.add_argument('service', metavar='SERVICE',
    action='store', nargs='?',
    help='name of the feature')

parser.add_argument('value', metavar='VALUE',
    action='store', nargs='?',
    help='new value of the service (on/off)')

parser.add_argument('--unset', '--default', '--delete', '-D',
    dest='delete', default=False,
    action='store_true',
    help='unset service (default to VM preference)')

parser.add_argument('--list', '-l',
    dest='list',
    action='store_true',
    help='list services (default action)')

parser.add_argument('--enable', '-e',
    dest='value',
    action='store_const', const='1',
    help='enable service (same as setting "on" value)')

parser.add_argument('--disable', '-d',
    dest='value',
    action='store_const', const='0',
    help='disable service (same as setting "off" value)')

[docs]def parse_bool(value): '''Convert string value to bool according to well known representations It accepts (case-insensitive) ``'0'``, ``'no'`` and ``false`` as :py:obj:`False` and ``'1'``, ``'yes'`` and ``'true'`` as :py:obj:`True`. ''' if isinstance(value, str): lcvalue = value.lower() if lcvalue in ('0', 'no', 'false', 'off'): return False if lcvalue in ('1', 'yes', 'true', 'on'): return True raise qubesadmin.exc.QubesValueError( 'Invalid literal for boolean value: {!r}'.format(value)) return bool(value)
[docs]def main(args=None, app=None): '''Main routine of :program:`qvm-features`. :param list args: Optional arguments to override those delivered from \ command line. ''' args = parser.parse_args(args, app=app) vm = args.domains[0] if not hasattr(args, 'service'): if args.delete: parser.error('--unset requires a feature') services = [(feat[len('service.'):], 'on' if vm.features[feat] else 'off') for feat in vm.features if feat.startswith('service.')] qubesadmin.tools.print_table(services) elif args.delete: if hasattr(args, 'value'): parser.error('cannot both set and unset a value') try: del vm.features['service.' + args.service] except KeyError: pass except qubesadmin.exc.QubesException as err: parser.error_runtime(str(err)) elif hasattr(args, 'value'): try: vm.features['service.' + args.service] = parse_bool(args.value) except qubesadmin.exc.QubesException as err: parser.error_runtime(str(err)) else: try: print('on' if vm.features['service.' + args.service] else 'off') return 0 except KeyError: return 1 except qubesadmin.exc.QubesException as err: parser.error_runtime(str(err)) return 0
if __name__ == '__main__': sys.exit(main())