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# vgp_symlink_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.gp.gpclass import gp_xml_ext, gp_file_applier
from samba.gp.util.logging import log
class vgp_symlink_ext(gp_xml_ext, gp_file_applier):
def __str__(self):
return 'VGP/Unix Settings/Symbolic Links'
def process_group_policy(self, deleted_gpo_list, changed_gpo_list):
for guid, settings in deleted_gpo_list:
if str(self) in settings:
for attribute, symlink in settings[str(self)].items():
self.unapply(guid, attribute, symlink)
for gpo in changed_gpo_list:
if gpo.file_sys_path:
xml = 'MACHINE/VGP/VTLA/Unix/Symlink/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('file_properties'):
source = entry.find('source').text
target = entry.find('target').text
# We can only create a single instance of the target, so
# this becomes our unchanging attribute.
attribute = target
# The changeable part of our policy is the source (the
# thing the target points to), so our value hash is based
# on the source.
value_hash = self.generate_value_hash(source)
def applier_func(source, target):
if not os.path.exists(target):
os.symlink(source, target)
return [target]
else:
log.warn('Symlink destination exists', target)
return []
self.apply(gpo.name, attribute, value_hash, applier_func,
source, target)
def rsop(self, gpo):
output = {}
xml = 'MACHINE/VGP/VTLA/Unix/Symlink/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('file_properties'):
source = entry.find('source').text
target = entry.find('target').text
if str(self) not in output.keys():
output[str(self)] = []
output[str(self)].append('ln -s %s %s' % (source, target))
return output
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