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# -*- coding: utf-8 -*-
"""Preprocessing related functions and classes for testing."""
from __future__ import unicode_literals
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 dfwinreg import registry as dfwinreg_registry
from dfwinreg import registry_searcher
from plaso.containers import artifacts
from plaso.engine import knowledge_base
from plaso.preprocessors import manager
from tests import test_lib as shared_test_lib
class ArtifactPreprocessorPluginTestCase(shared_test_lib.BaseTestCase):
"""Artifact preprocessor plugin test case."""
@classmethod
def setUpClass(cls):
"""Makes preparations before running any of the tests."""
artifacts_path = shared_test_lib.GetTestFilePath(['artifacts'])
cls._artifacts_registry = artifacts_registry.ArtifactDefinitionsRegistry()
reader = artifacts_reader.YamlArtifactsReader()
cls._artifacts_registry.ReadFromDirectory(reader, artifacts_path)
def _RunPreprocessorPluginOnFileSystem(
self, file_system, mount_point, plugin):
"""Runs a preprocessor plugin on a file system.
Args:
file_system (dfvfs.FileSystem): file system to be preprocessed.
mount_point (dfvfs.PathSpec): mount point path specification that refers
to the base location of the file system.
plugin (ArtifactPreprocessorPlugin): preprocessor plugin.
Return:
KnowledgeBase: knowledge base filled with preprocessing information.
"""
artifact_definition = self._artifacts_registry.GetDefinitionByName(
plugin.ARTIFACT_DEFINITION_NAME)
self.assertIsNotNone(artifact_definition)
knowledge_base_object = knowledge_base.KnowledgeBase()
searcher = file_system_searcher.FileSystemSearcher(file_system, mount_point)
plugin.Collect(
knowledge_base_object, artifact_definition, searcher, file_system)
return knowledge_base_object
def _RunPreprocessorPluginOnWindowsRegistryValue(
self, file_system, mount_point, plugin):
"""Runs a preprocessor plugin on a Windows Registry value.
Args:
file_system (dfvfs.FileSystem): file system to be preprocessed.
mount_point (dfvfs.PathSpec): mount point path specification that refers
to the base location of the file system.
plugin (ArtifactPreprocessorPlugin): preprocessor plugin.
Return:
KnowledgeBase: knowledge base filled with preprocessing information.
"""
artifact_definition = self._artifacts_registry.GetDefinitionByName(
plugin.ARTIFACT_DEFINITION_NAME)
self.assertIsNotNone(artifact_definition)
environment_variable = artifacts.EnvironmentVariableArtifact(
case_sensitive=False, name='SystemRoot', value='C:\\Windows')
registry_file_reader = manager.FileSystemWinRegistryFileReader(
file_system, mount_point, environment_variables=[environment_variable])
win_registry = dfwinreg_registry.WinRegistry(
registry_file_reader=registry_file_reader)
knowledge_base_object = knowledge_base.KnowledgeBase()
searcher = registry_searcher.WinRegistrySearcher(win_registry)
plugin.Collect(knowledge_base_object, artifact_definition, searcher)
return knowledge_base_object
def _RunPreprocessorPluginOnWindowsRegistryValueSoftware(self, plugin):
"""Runs a preprocessor plugin on a Windows Registry value in SOFTWARE.
Args:
plugin (ArtifactPreprocessorPlugin): preprocessor plugin.
Return:
KnowledgeBase: knowledge base filled with preprocessing information.
"""
file_system_builder = fake_file_system_builder.FakeFileSystemBuilder()
test_file_path = self._GetTestFilePath(['SOFTWARE'])
file_system_builder.AddFileReadData(
'/Windows/System32/config/SOFTWARE', test_file_path)
mount_point = path_spec_factory.Factory.NewPathSpec(
dfvfs_definitions.TYPE_INDICATOR_FAKE, location='/')
return self._RunPreprocessorPluginOnWindowsRegistryValue(
file_system_builder.file_system, mount_point, plugin)
def _RunPreprocessorPluginOnWindowsRegistryValueSystem(self, plugin):
"""Runs a preprocessor plugin on a Windows Registry value in SYSTEM.
Args:
plugin (ArtifactPreprocessorPlugin): preprocessor plugin.
Return:
KnowledgeBase: knowledge base filled with preprocessing information.
"""
file_system_builder = fake_file_system_builder.FakeFileSystemBuilder()
test_file_path = self._GetTestFilePath(['SYSTEM'])
file_system_builder.AddFileReadData(
'/Windows/System32/config/SYSTEM', test_file_path)
mount_point = path_spec_factory.Factory.NewPathSpec(
dfvfs_definitions.TYPE_INDICATOR_FAKE, location='/')
return self._RunPreprocessorPluginOnWindowsRegistryValue(
file_system_builder.file_system, mount_point, plugin)
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