core-admin/qubes-rpc-policy/generate-admin-policy
2017-07-04 04:27:37 +02:00

97 lines
3.6 KiB
Python
Executable File

#!/usr/bin/python3
# coding=utf-8
# The Qubes OS Project, https://www.qubes-os.org/
#
# Copyright (C) 2017 Marek Marczykowski-Górecki
# <marmarek@invisiblethingslab.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 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 General Public License for more details.
#
# You should have received a copy of the GNU 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.
import argparse
import os
import sys
import qubes.api.admin
parser = argparse.ArgumentParser(
description='Generate default Admin API policy')
parser.add_argument('--include-base', action='store',
default='include',
help='Base path for included paths (default: %(default)s)')
parser.add_argument('--destdir', action='store',
default='/etc/qubes-rpc/policy',
help='Directory where write output files to (default: %(default)s)')
parser.add_argument('--verbose', action='store_true', default=False,
help='Be verbose')
parser.add_argument('--exclude', action='store', nargs='*',
help='Exclude service')
parser.add_argument('service', nargs='*', action='store',
help='Generate policy for those services (default: all)')
default_policy_header = '''\
## Note that policy parsing stops at the first match.
## Anything not specifically allowed here (or in included file) will be denied.
## Please use a single # to start your custom comments
## Add your entries here, make sure to append ",target=dom0" to all allow/ask actions
## Include a common file for all admin.* methods to ease setting up
## Management VM.
## To allow only specific actions, edit specific policy file, like this one. To
## allow all of them, edit appropriate /etc/qubes-rpc/include/admin-*.
'''
def write_default_policy(args, apiname, clasifiers):
''' Write single default policy for given API call '''
assert 'scope' in clasifiers, \
'Method {} lack scope classifier'.format(apiname)
assert any(attr in clasifiers for attr in ('read', 'write', 'execute')), \
'Method {} lack read/write/execute classifier'.format(apiname)
assert clasifiers['scope'] in ('local', 'global'), \
'Method {} have invalid scope: {}'.format(apiname, clasifiers['scope'])
file_to_include = 'admin-{scope}-{rwx}'.format(
scope=clasifiers['scope'],
rwx=('rwx' if clasifiers.get('write', False) or
clasifiers.get('execute', False)
else 'ro'))
if args.verbose:
print('Service {}: include {}'.format(apiname, file_to_include),
file=sys.stderr)
with open(os.path.join(args.destdir, apiname), 'w') as f:
f.write(default_policy_header)
f.write('$include:{}\n'.format(
os.path.join(args.include_base, file_to_include)))
def main(args=None):
''' Main function of default-admin-policy tool'''
args = parser.parse_args(args)
for func, apiname, _ in qubes.api.admin.QubesAdminAPI.list_methods():
if args.service and apiname not in args.service:
continue
if args.exclude and apiname in args.exclude:
continue
write_default_policy(args, apiname, func.classifiers)
if __name__ == '__main__':
sys.exit(main())