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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""Tests the engine."""
from __future__ import unicode_literals
import unittest
from artifacts import reader as artifacts_reader
from artifacts import registry as artifacts_registry
from dfvfs.helpers import fake_file_system_builder
from dfvfs.helpers import file_system_searcher
from dfvfs.lib import definitions as dfvfs_definitions
from dfvfs.path import factory as path_spec_factory
from dfvfs.path import path_spec
from dfvfs.resolver import context
from dfvfs.vfs import file_system as dfvfs_file_system
from plaso.engine import configurations
from plaso.engine import engine
from plaso.lib import definitions
from tests import test_lib as shared_test_lib
class TestEngine(engine.BaseEngine):
"""Class that defines the processing engine for testing."""
def __init__(self):
"""Initialize a test engine object."""
file_system_builder = fake_file_system_builder.FakeFileSystemBuilder()
test_file_path = shared_test_lib.GetTestFilePath(['SOFTWARE'])
file_system_builder.AddFileReadData(
'/Windows/System32/config/SOFTWARE', test_file_path)
test_file_path = shared_test_lib.GetTestFilePath(['SYSTEM'])
file_system_builder.AddFileReadData(
'/Windows/System32/config/SYSTEM', test_file_path)
super(TestEngine, self).__init__()
self._file_system = file_system_builder.file_system
self._mount_point = path_spec_factory.Factory.NewPathSpec(
dfvfs_definitions.TYPE_INDICATOR_FAKE, location='/')
def GetSourceFileSystem(self, source_path_spec, resolver_context=None):
"""Retrieves the file system of the source.
Args:
source_path_spec (dfvfs.PathSpec): path specifications of the sources
to process.
resolver_context (dfvfs.Context): resolver context.
Returns:
tuple: containing:
dfvfs.FileSystem: file system
path.PathSpec: mount point path specification. The mount point path
specification refers to either a directory or a volume on a storage
media device or image. It is needed by the dfVFS file system
searcher (FileSystemSearcher) to indicate the base location of
the file system
"""
self._file_system.Open(self._mount_point)
return self._file_system, self._mount_point
class BaseEngineTest(shared_test_lib.BaseTestCase):
"""Tests for the engine object."""
# pylint: disable=protected-access
def testDetermineOperatingSystem(self):
"""Tests the _DetermineOperatingSystem function."""
test_engine = engine.BaseEngine()
test_file_path = self._GetTestFilePath(['ímynd.dd'])
self._SkipIfPathNotExists(test_file_path)
os_path_spec = path_spec_factory.Factory.NewPathSpec(
dfvfs_definitions.TYPE_INDICATOR_OS, location=test_file_path)
source_path_spec = path_spec_factory.Factory.NewPathSpec(
dfvfs_definitions.TYPE_INDICATOR_TSK, location='/',
parent=os_path_spec)
file_system, mount_point = test_engine.GetSourceFileSystem(source_path_spec)
searcher = file_system_searcher.FileSystemSearcher(
file_system, mount_point)
operating_system = test_engine._DetermineOperatingSystem(searcher)
self.assertEqual(
operating_system, definitions.OPERATING_SYSTEM_FAMILY_UNKNOWN)
def testStartStopProfiling(self):
"""Tests the _StartProfiling and _StopProfiling functions."""
with shared_test_lib.TempDirectory() as temp_directory:
configuration = configurations.ProcessingConfiguration()
configuration.profiling.directory = temp_directory
configuration.profiling.profilers = set([
'memory', 'parsers', 'processing', 'serializers', 'storage',
'task_queue'])
test_engine = engine.BaseEngine()
test_engine._StartProfiling(None)
test_engine._StartProfiling(configuration.profiling)
test_engine._StopProfiling()
def testCreateSession(self):
"""Tests the CreateSession function."""
test_engine = engine.BaseEngine()
session = test_engine.CreateSession()
self.assertIsNotNone(session)
def testGetSourceFileSystem(self):
"""Tests the GetSourceFileSystem function."""
test_engine = engine.BaseEngine()
test_file_path = self._GetTestFilePath(['ímynd.dd'])
self._SkipIfPathNotExists(test_file_path)
os_path_spec = path_spec_factory.Factory.NewPathSpec(
dfvfs_definitions.TYPE_INDICATOR_OS, location=test_file_path)
source_path_spec = path_spec_factory.Factory.NewPathSpec(
dfvfs_definitions.TYPE_INDICATOR_TSK, location='/',
parent=os_path_spec)
resolver_context = context.Context()
test_file_system, test_mount_point = test_engine.GetSourceFileSystem(
source_path_spec, resolver_context=resolver_context)
self.assertIsNotNone(test_file_system)
self.assertIsInstance(test_file_system, dfvfs_file_system.FileSystem)
self.assertIsNotNone(test_mount_point)
self.assertIsInstance(test_mount_point, path_spec.PathSpec)
test_file_system.Close()
with self.assertRaises(RuntimeError):
test_engine.GetSourceFileSystem(None)
def testPreprocessSources(self):
"""Tests the PreprocessSources function."""
test_file_path = self._GetTestFilePath(['SOFTWARE'])
self._SkipIfPathNotExists(test_file_path)
test_file_path = self._GetTestFilePath(['SYSTEM'])
self._SkipIfPathNotExists(test_file_path)
test_artifacts_path = shared_test_lib.GetTestFilePath(['artifacts'])
self._SkipIfPathNotExists(test_artifacts_path)
registry = artifacts_registry.ArtifactDefinitionsRegistry()
reader = artifacts_reader.YamlArtifactsReader()
registry.ReadFromDirectory(reader, test_artifacts_path)
test_engine = TestEngine()
source_path_spec = path_spec_factory.Factory.NewPathSpec(
dfvfs_definitions.TYPE_INDICATOR_FAKE, location='/')
test_engine.PreprocessSources(registry, [source_path_spec])
operating_system = test_engine.knowledge_base.GetValue('operating_system')
self.assertEqual(operating_system, 'Windows NT')
test_engine.PreprocessSources(registry, [None])
if __name__ == '__main__':
unittest.main()
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