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# GPO Parser for audit extensions
#
# Copyright (C) Andrew Bartlett <abartlet@samba.org> 2018
# Written by Garming Sam <garming@catalyst.net.nz>
#
# 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 codecs
import csv
import io
from io import BytesIO
from xml.etree.ElementTree import Element, SubElement
from samba.gp_parse import GPParser
# [MS-GPAC] Group Policy Audit Configuration
class GPAuditCsvParser(GPParser):
encoding = 'utf-8'
header = None
lines = []
def parse(self, contents):
self.lines = []
reader = csv.reader(codecs.getreader(self.encoding)(BytesIO(contents)))
self.header = next(reader)
for row in reader:
line = {}
for i, x in enumerate(row):
line[self.header[i]] = x
self.lines.append(line)
# print line
def write_xml(self, filename):
with open(filename, 'wb') as f:
root = Element('CsvFile')
child = SubElement(root, 'Row')
for e in self.header:
value = SubElement(child, 'Value')
value.text = e
for line in self.lines:
child = SubElement(root, 'Row')
for e, title in [(line[x], x) for x in self.header]:
value = SubElement(child, 'Value')
value.text = e
# Metadata for generalization
if title == 'Policy Target' and e != '':
value.attrib['user_id'] = 'TRUE'
if (title == 'Setting Value' and e != '' and
(line['Subcategory'] == 'RegistryGlobalSacl' or
line['Subcategory'] == 'FileGlobalSacl')):
value.attrib['acl'] = 'TRUE'
self.write_pretty_xml(root, f)
# contents = codecs.open(filename, encoding='utf-8').read()
# self.load_xml(fromstring(contents))
def load_xml(self, root):
header = True
self.lines = []
for r in root.findall('Row'):
if header:
header = False
self.header = []
for v in r.findall('Value'):
if not isinstance(v.text, str):
v.text = v.text.decode(self.output_encoding)
self.header.append(v.text)
else:
line = {}
for i, v in enumerate(r.findall('Value')):
line[self.header[i]] = v.text if v.text is not None else ''
if not isinstance(self.header[i], str):
line[self.header[i]] = line[self.header[i]].decode(self.output_encoding)
self.lines.append(line)
def write_binary(self, filename):
from io import open
with open(filename, 'w', encoding=self.encoding) as f:
# In this case "binary" means "utf-8", so we let Python do that.
writer = csv.writer(f, quoting=csv.QUOTE_MINIMAL)
writer.writerow(self.header)
for line in self.lines:
writer.writerow([line[x] for x in self.header])
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