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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Tests for the data stream implementation using pytsk3."""
import unittest
import pytsk3
from dfvfs.lib import definitions
from dfvfs.path import factory as path_spec_factory
from dfvfs.resolver import context
from dfvfs.vfs import tsk_data_stream
from dfvfs.vfs import tsk_file_system
from tests import test_lib as shared_test_lib
class TSKDataStreamTestExt2(shared_test_lib.BaseTestCase):
"""Tests the SleuthKit (TSK) data stream on ext2."""
_INODE_ANOTHER_FILE = 15
def setUp(self):
"""Sets up the needed objects used throughout the test."""
self._resolver_context = context.Context()
test_path = self._GetTestFilePath(['ext2.raw'])
self._SkipIfPathNotExists(test_path)
test_os_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_OS, location=test_path)
self._raw_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_RAW, parent=test_os_path_spec)
self._tsk_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/',
parent=self._raw_path_spec)
self._file_system = tsk_file_system.TSKFileSystem(
self._resolver_context, self._tsk_path_spec)
self._file_system.Open()
def tearDown(self):
"""Cleans up the needed objects used throughout the test."""
self._resolver_context.Empty()
def testName(self):
"""Test the name property."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_EXT, inode=self._INODE_ANOTHER_FILE,
location='/a_directory/another_file', parent=self._raw_path_spec)
file_entry = self._file_system.GetFileEntryByPathSpec(path_spec)
self.assertIsNotNone(file_entry)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, None)
self.assertEqual(test_data_stream.name, '')
def testGetExtents(self):
"""Test the GetExtents function."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_EXT, inode=self._INODE_ANOTHER_FILE,
location='/a_directory/another_file', parent=self._raw_path_spec)
file_entry = self._file_system.GetFileEntryByPathSpec(path_spec)
self.assertIsNotNone(file_entry)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, None)
extents = test_data_stream.GetExtents()
self.assertEqual(len(extents), 1)
self.assertEqual(extents[0].extent_type, definitions.EXTENT_TYPE_DATA)
self.assertEqual(extents[0].offset, 527360)
self.assertEqual(extents[0].size, 1024)
def testIsDefault(self):
"""Test the IsDefault function."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_EXT, inode=self._INODE_ANOTHER_FILE,
location='/a_directory/another_file', parent=self._raw_path_spec)
file_entry = self._file_system.GetFileEntryByPathSpec(path_spec)
self.assertIsNotNone(file_entry)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, None)
result = test_data_stream.IsDefault()
self.assertTrue(result)
class TSKDataStreamTestHFSPlus(shared_test_lib.BaseTestCase):
"""Tests the SleuthKit (TSK) data stream on HFS+."""
def setUp(self):
"""Sets up the needed objects used throughout the test."""
self._resolver_context = context.Context()
test_path = self._GetTestFilePath(['hfsplus.raw'])
self._SkipIfPathNotExists(test_path)
test_os_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_OS, location=test_path)
self._raw_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_RAW, parent=test_os_path_spec)
self._tsk_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/',
parent=self._raw_path_spec)
self._file_system = tsk_file_system.TSKFileSystem(
self._resolver_context, self._tsk_path_spec)
self._file_system.Open()
def tearDown(self):
"""Cleans up the needed objects used throughout the test."""
self._resolver_context.Empty()
def _GetResourceForkAttribute(self, tsk_file):
"""Retrieves an resource fork attribute.
Args:
tsk_file (pytsk3.File): TSK file.
Returns:
pytsk3.Attribute: TSK attribute or None.
"""
for tsk_attribute in tsk_file:
if getattr(tsk_attribute, 'info', None):
attribute_type = getattr(tsk_attribute.info, 'type', None)
if attribute_type == pytsk3.TSK_FS_ATTR_TYPE_HFS_RSRC:
return tsk_attribute
return None
def testName(self):
"""Test the name property."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, inode=25,
location='/a_directory/a_resourcefork', parent=self._raw_path_spec)
file_entry = self._file_system.GetFileEntryByPathSpec(path_spec)
self.assertIsNotNone(file_entry)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, None)
self.assertEqual(test_data_stream.name, '')
tsk_file = file_entry.GetTSKFile()
self.assertIsNotNone(tsk_file)
tsk_attribute = self._GetResourceForkAttribute(tsk_file)
self.assertIsNotNone(tsk_attribute)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, tsk_attribute)
self.assertEqual(test_data_stream.name, 'rsrc')
def testGetExtents(self):
"""Test the GetExtents function."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, inode=25,
location='/a_directory/a_resourcefork', parent=self._raw_path_spec)
file_entry = self._file_system.GetFileEntryByPathSpec(path_spec)
self.assertIsNotNone(file_entry)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, None)
extents = test_data_stream.GetExtents()
self.assertEqual(len(extents), 0)
tsk_file = file_entry.GetTSKFile()
self.assertIsNotNone(tsk_file)
tsk_attribute = self._GetResourceForkAttribute(tsk_file)
self.assertIsNotNone(tsk_attribute)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, tsk_attribute)
extents = test_data_stream.GetExtents()
self.assertEqual(len(extents), 1)
self.assertEqual(extents[0].extent_type, definitions.EXTENT_TYPE_DATA)
self.assertEqual(extents[0].offset, 1142784)
self.assertEqual(extents[0].size, 4096)
def testIsDefault(self):
"""Test the IsDefault function."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, inode=25,
location='/a_directory/a_resourcefork', parent=self._raw_path_spec)
file_entry = self._file_system.GetFileEntryByPathSpec(path_spec)
self.assertIsNotNone(file_entry)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, None)
result = test_data_stream.IsDefault()
self.assertTrue(result)
tsk_file = file_entry.GetTSKFile()
self.assertIsNotNone(tsk_file)
tsk_attribute = self._GetResourceForkAttribute(tsk_file)
self.assertIsNotNone(tsk_attribute)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, tsk_attribute)
result = test_data_stream.IsDefault()
self.assertFalse(result)
class TSKDataStreamTestNTFS(shared_test_lib.BaseTestCase):
"""Tests the SleuthKit (TSK) data stream on NTFS."""
def setUp(self):
"""Sets up the needed objects used throughout the test."""
self._resolver_context = context.Context()
test_path = self._GetTestFilePath(['ntfs.raw'])
self._SkipIfPathNotExists(test_path)
test_os_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_OS, location=test_path)
self._raw_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_RAW, parent=test_os_path_spec)
self._tsk_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/',
parent=self._raw_path_spec)
self._file_system = tsk_file_system.TSKFileSystem(
self._resolver_context, self._tsk_path_spec)
self._file_system.Open()
def tearDown(self):
"""Cleans up the needed objects used throughout the test."""
self._resolver_context.Empty()
def _GetAlternateDataStreamAttribute(self, tsk_file):
"""Retrieves an ADS attribute.
Args:
tsk_file (pytsk3.File): TSK file.
Returns:
pytsk3.Attribute: TSK attribute or None.
"""
for tsk_attribute in tsk_file:
if getattr(tsk_attribute, 'info', None):
attribute_name = getattr(tsk_attribute.info, 'name', None)
attribute_type = getattr(tsk_attribute.info, 'type', None)
if (attribute_type == pytsk3.TSK_FS_ATTR_TYPE_NTFS_DATA and
attribute_name):
return tsk_attribute
return None
def testName(self):
"""Test the name property."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, inode=10, location='/$UpCase',
parent=self._raw_path_spec)
file_entry = self._file_system.GetFileEntryByPathSpec(path_spec)
self.assertIsNotNone(file_entry)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, None)
self.assertEqual(test_data_stream.name, '')
tsk_file = file_entry.GetTSKFile()
self.assertIsNotNone(tsk_file)
tsk_attribute = self._GetAlternateDataStreamAttribute(tsk_file)
self.assertIsNotNone(tsk_attribute)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, tsk_attribute)
self.assertEqual(test_data_stream.name, '$Info')
def testGetExtents(self):
"""Test the GetExtents function."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, inode=10, location='/$UpCase',
parent=self._raw_path_spec)
file_entry = self._file_system.GetFileEntryByPathSpec(path_spec)
self.assertIsNotNone(file_entry)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, None)
extents = test_data_stream.GetExtents()
self.assertEqual(len(extents), 1)
self.assertEqual(extents[0].extent_type, definitions.EXTENT_TYPE_DATA)
self.assertEqual(extents[0].offset, 823296)
self.assertEqual(extents[0].size, 131072)
tsk_file = file_entry.GetTSKFile()
self.assertIsNotNone(tsk_file)
tsk_attribute = self._GetAlternateDataStreamAttribute(tsk_file)
self.assertIsNotNone(tsk_attribute)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, tsk_attribute)
extents = test_data_stream.GetExtents()
# No extents are returned for a resident $DATA attribute.
self.assertEqual(len(extents), 0)
def testIsDefault(self):
"""Test the IsDefault function."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, inode=10, location='/$UpCase',
parent=self._raw_path_spec)
file_entry = self._file_system.GetFileEntryByPathSpec(path_spec)
self.assertIsNotNone(file_entry)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, None)
result = test_data_stream.IsDefault()
self.assertTrue(result)
tsk_file = file_entry.GetTSKFile()
self.assertIsNotNone(tsk_file)
tsk_attribute = self._GetAlternateDataStreamAttribute(tsk_file)
self.assertIsNotNone(tsk_attribute)
test_data_stream = tsk_data_stream.TSKDataStream(file_entry, tsk_attribute)
result = test_data_stream.IsDefault()
self.assertFalse(result)
if __name__ == '__main__':
unittest.main()
|
