Current File : //lib/python3/dist-packages/samba/vgp_sudoers_ext.py
# vgp_sudoers_ext samba gpo policy
# Copyright (C) David Mulder <dmulder@suse.com> 2020
#
# 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 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
from samba.gpclass import gp_xml_ext
from base64 import b64encode
from tempfile import NamedTemporaryFile
from subprocess import Popen, PIPE
from samba.gp_sudoers_ext import visudo, intro
class vgp_sudoers_ext(gp_xml_ext):
def __str__(self):
return 'VGP/Unix Settings/Sudo Rights'
def process_group_policy(self, deleted_gpo_list, changed_gpo_list,
sdir='/etc/sudoers.d'):
for guid, settings in deleted_gpo_list:
self.gp_db.set_guid(guid)
if str(self) in settings:
for attribute, sudoers in settings[str(self)].items():
if os.path.exists(sudoers):
os.unlink(sudoers)
self.gp_db.delete(str(self), attribute)
self.gp_db.commit()
for gpo in changed_gpo_list:
if gpo.file_sys_path:
self.gp_db.set_guid(gpo.name)
xml = 'MACHINE/VGP/VTLA/Sudo/SudoersConfiguration/manifest.xml'
path = os.path.join(gpo.file_sys_path, xml)
xml_conf = self.parse(path)
if not xml_conf:
continue
policy = xml_conf.find('policysetting')
data = policy.find('data')
for entry in data.findall('sudoers_entry'):
command = entry.find('command').text
user = entry.find('user').text
listelements = entry.findall('listelement')
principals = []
for listelement in listelements:
principals.extend(listelement.findall('principal'))
if len(principals) > 0:
uname = ','.join([u.text if u.attrib['type'] == 'user' \
else '%s%%' % u.text for u in principals])
else:
uname = 'ALL'
nopassword = entry.find('password') == None
np_entry = ' NOPASSWD:' if nopassword else ''
p = '%s ALL=(%s)%s %s' % (uname, user, np_entry, command)
attribute = b64encode(p.encode()).decode()
old_val = self.gp_db.retrieve(str(self), attribute)
if not old_val:
contents = intro
contents += '%s\n' % p
with NamedTemporaryFile() as f:
with open(f.name, 'w') as w:
w.write(contents)
sudo_validation = \
Popen([visudo, '-c', '-f', f.name],
stdout=PIPE, stderr=PIPE).wait()
if sudo_validation == 0:
with NamedTemporaryFile(prefix='gp_',
delete=False,
dir=sdir) as f:
with open(f.name, 'w') as w:
w.write(contents)
self.gp_db.store(str(self),
attribute,
f.name)
else:
self.logger.warn('Sudoers apply "%s" failed'
% p)
self.gp_db.commit()
def rsop(self, gpo):
output = {}
xml = 'MACHINE/VGP/VTLA/Sudo/SudoersConfiguration/manifest.xml'
if gpo.file_sys_path:
path = os.path.join(gpo.file_sys_path, xml)
xml_conf = self.parse(path)
if not xml_conf:
return output
policy = xml_conf.find('policysetting')
data = policy.find('data')
for entry in data.findall('sudoers_entry'):
command = entry.find('command').text
user = entry.find('user').text
listelements = entry.findall('listelement')
principals = []
for listelement in listelements:
principals.extend(listelement.findall('principal'))
if len(principals) > 0:
uname = ','.join([u.text if u.attrib['type'] == 'user' \
else '%s%%' % u.text for u in principals])
else:
uname = 'ALL'
nopassword = entry.find('password') == None
np_entry = ' NOPASSWD:' if nopassword else ''
p = '%s ALL=(%s)%s %s' % (uname, user, np_entry, command)
if str(self) not in output.keys():
output[str(self)] = []
output[str(self)].append(p)
return output
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