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16eaf7fd52
Signed-off-by: David Mulder <dmulder@samba.org> Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz> Reviewed-by: Andrew Bartlett <abartlet@samba.org> Autobuild-User(master): Andrew Bartlett <abartlet@samba.org> Autobuild-Date(master): Mon Jul 31 10:55:26 UTC 2023 on atb-devel-224
141 lines
5.9 KiB
Python
141 lines
5.9 KiB
Python
# vgp_files_ext samba gpo policy
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# Copyright (C) David Mulder <dmulder@suse.com> 2020
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os, pwd, grp
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from samba.gp.gpclass import gp_xml_ext, check_safe_path, gp_file_applier
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from tempfile import NamedTemporaryFile
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from shutil import copyfile, move
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from samba.gp.util.logging import log
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def calc_mode(entry):
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mode = 0o000
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for permissions in entry.findall('permissions'):
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ptype = permissions.get('type')
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if ptype == 'user':
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if permissions.find('read') is not None:
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mode |= 0o400
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if permissions.find('write') is not None:
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mode |= 0o200
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if permissions.find('execute') is not None:
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mode |= 0o100
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elif ptype == 'group':
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if permissions.find('read') is not None:
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mode |= 0o040
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if permissions.find('write') is not None:
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mode |= 0o020
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if permissions.find('execute') is not None:
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mode |= 0o010
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elif ptype == 'other':
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if permissions.find('read') is not None:
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mode |= 0o004
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if permissions.find('write') is not None:
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mode |= 0o002
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if permissions.find('execute') is not None:
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mode |= 0o001
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return mode
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def stat_from_mode(mode):
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stat = '-'
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for i in range(6, -1, -3):
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mask = {0o4: 'r', 0o2: 'w', 0o1: 'x'}
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for x in mask.keys():
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if mode & (x << i):
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stat += mask[x]
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else:
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stat += '-'
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return stat
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def source_file_change(fname):
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if os.path.exists(fname):
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return b'%d' % os.stat(fname).st_ctime
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class vgp_files_ext(gp_xml_ext, gp_file_applier):
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def __str__(self):
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return 'VGP/Unix Settings/Files'
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def process_group_policy(self, deleted_gpo_list, changed_gpo_list):
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for guid, settings in deleted_gpo_list:
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if str(self) in settings:
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for attribute, _ in settings[str(self)].items():
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self.unapply(guid, attribute, attribute)
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for gpo in changed_gpo_list:
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if gpo.file_sys_path:
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xml = 'MACHINE/VGP/VTLA/Unix/Files/manifest.xml'
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path = os.path.join(gpo.file_sys_path, xml)
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xml_conf = self.parse(path)
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if not xml_conf:
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continue
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policy = xml_conf.find('policysetting')
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data = policy.find('data')
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for entry in data.findall('file_properties'):
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local_path = self.lp.cache_path('gpo_cache')
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source = entry.find('source').text
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source_file = os.path.join(local_path,
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os.path.dirname(check_safe_path(path)).upper(),
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source.upper())
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if not os.path.exists(source_file):
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log.warn('Source file does not exist', source_file)
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continue
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target = entry.find('target').text
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user = entry.find('user').text
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group = entry.find('group').text
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mode = calc_mode(entry)
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# The attribute is simply the target file.
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attribute = target
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# The value hash is generated from the source file last
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# change stamp, the user, the group, and the mode, ensuring
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# any changes to this GPO will cause the file to be
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# rewritten.
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value_hash = self.generate_value_hash(
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source_file_change(source_file),
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user, group, b'%d' % mode)
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def applier_func(source_file, target, user, group, mode):
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with NamedTemporaryFile(dir=os.path.dirname(target),
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delete=False) as f:
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copyfile(source_file, f.name)
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os.chown(f.name, pwd.getpwnam(user).pw_uid,
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grp.getgrnam(group).gr_gid)
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os.chmod(f.name, mode)
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move(f.name, target)
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return [target]
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self.apply(gpo.name, attribute, value_hash, applier_func,
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source_file, target, user, group, mode)
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def rsop(self, gpo):
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output = {}
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xml = 'MACHINE/VGP/VTLA/Unix/Files/manifest.xml'
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if gpo.file_sys_path:
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path = os.path.join(gpo.file_sys_path, xml)
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xml_conf = self.parse(path)
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if not xml_conf:
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return output
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policy = xml_conf.find('policysetting')
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data = policy.find('data')
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for entry in data.findall('file_properties'):
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source = entry.find('source').text
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target = entry.find('target').text
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user = entry.find('user').text
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group = entry.find('group').text
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mode = calc_mode(entry)
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p = '%s\t%s\t%s\t%s -> %s' % \
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(stat_from_mode(mode), user, group, target, source)
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if str(self) not in output.keys():
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output[str(self)] = []
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output[str(self)].append(p)
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return output
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