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#
# Copyright (C) 2020-2024 Soleta Networks <info@soleta.eu>
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the
# Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
import platform
import re
import os
import logging
from collections import namedtuple
import hivex
from src.utils.probe import os_probe
from src.utils.winreg import *
Package = namedtuple('Package', ['name', 'version'])
Package.__str__ = lambda pkg: f'{pkg.name} {pkg.version}'
DPKG_STATUS_PATH = '/var/lib/dpkg/status'
OSRELEASE_PATH = '/etc/os-release'
def _fill_package_set(hive, key, pkg_set):
"""
Fill the package set looking for entries at the current registry
node childs.
Any valid node child must have "DisplayVersion" or "DisplayName" keys.
"""
childs = hive.node_children(key)
valid_childs = []
for child in childs:
child_name = hive.node_name(child)
values = hive.node_values(child)
for value in values:
if hive.value_key(value) == 'DisplayVersion':
valid_child = hive.node_get_child(key, child_name)
valid_childs.append(valid_child)
for ch in valid_childs:
try:
name = hive.value_string(hive.node_get_value(ch, 'DisplayName'))
value = hive.node_get_value(ch, 'DisplayVersion')
version = hive.value_string(value)
pkg = Package(name, version)
pkg_set.add(pkg)
except RuntimeError:
logging.warning('Unable to fill package set with invalid child')
pass
def _fill_package_set_1(hive, pkg_set):
"""
Looks for entries in registry path
/Microsoft/Windows/CurrentVersion/Uninstall
Fills the given set with Package instances for each program found.
"""
root_node = hive.root()
key = get_node_child_from_path(hive, root_node, 'Microsoft/Windows/CurrentVersion/Uninstall')
_fill_package_set(hive, key, pkg_set)
def _fill_package_set_32_bit_compat(hive, pkg_set):
"""
Looks for entries in registry path
/Wow6432Node/Microsoft/Windows/CurrentVersion/Uninstall
64 bit Windows only.
Fills the given set with Package instances for each program found.
"""
root_node = hive.root()
key = get_node_child_from_path(hive, root_node, 'Wow6432Node/Windows/CurrentVersion/Uninstall')
_fill_package_set(hive, key, pkg_set)
def _get_package_set_windows(hivepath):
packages = set()
try:
h = hive_handler_open(hivepath, write = False)
_fill_package_set_1(h, packages)
except (RuntimeError, OgError) as e:
logging.error(f'Hivex was not able to operate over {hivepath}. Reported: {e}')
try:
_fill_package_set_32_bit_compat(h, packages)
except (RuntimeError, OgError) as e:
pass
return packages
def _get_package_set_dpkg(dpkg_status_path):
regex_pkg = '(?:^Package: )(?P<name>.*)\n(Essential:.*\n)?(?:Status: install ok installed)'
regex_ver = '(?:^Version: )(?P<version>.*)'
packages = set()
with open(dpkg_status_path, 'r') as f:
# Split by empty line
for par in re.split('^\n+', f.read(), flags=re.MULTILINE):
# Search for package with "Status: install ok installed"
result = re.search(regex_pkg, par)
if result is None:
continue
else:
pkg_name = result.group('name')
# If we hit a properly installed package, search for its version
result = re.search(regex_ver, par, flags=re.MULTILINE)
if result is None:
continue
else:
pkg_version = result.group('version')
pkg = Package(pkg_name, pkg_version)
packages.add(pkg)
return packages
def get_package_set(mountpoint):
dpkg_status_path = f'{mountpoint}{DPKG_STATUS_PATH}'
softwarehive = f'{mountpoint}{WINDOWS_HIVE_SOFTWARE}'
if os.path.exists(softwarehive):
pkgset = _get_package_set_windows(softwarehive)
elif os.path.exists(dpkg_status_path):
pkgset = _get_package_set_dpkg(dpkg_status_path)
else:
pkgset = set()
osname = os_probe(mountpoint)
# Legacy software inventory first element is the OS name
return [osname] + list(pkgset)
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