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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Tests for the file-like object implementation using the SleuthKit (TSK)."""
import os
import unittest
from dfvfs.file_io import tsk_file_io
from dfvfs.lib import definitions
from dfvfs.lib import errors
from dfvfs.path import factory as path_spec_factory
from dfvfs.resolver import context
from tests.file_io import test_lib
class TSKFileTestExt2(test_lib.Ext2ImageFileTestCase):
"""Tests the SleuthKit (TSK) file-like object on ext2."""
_IDENTIFIER_ANOTHER_FILE = 15
_IDENTIFIER_PASSWORDS_TXT = 14
def setUp(self):
"""Sets up the needed objects used throughout the test."""
super(TSKFileTestExt2, self).setUp()
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)
def tearDown(self):
"""Cleans up the needed objects used throughout the test."""
self._resolver_context.Empty()
def testOpenCloseIdentifier(self):
"""Test the open and close functionality using an inode."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK,
inode=self._IDENTIFIER_PASSWORDS_TXT,
parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
file_object.Open()
self.assertEqual(file_object.get_size(), 116)
# TODO: add a failing scenario.
def testOpenCloseLocation(self):
"""Test the open and close functionality using a location."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/passwords.txt',
parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
file_object.Open()
self.assertEqual(file_object.get_size(), 116)
# Try open with a path specification that has no parent.
path_spec.parent = None
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
with self.assertRaises(errors.PathSpecError):
file_object.Open()
def testSeek(self):
"""Test the seek functionality."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/a_directory/another_file',
inode=self._IDENTIFIER_ANOTHER_FILE,
parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
file_object.Open()
self.assertEqual(file_object.get_size(), 22)
file_object.seek(10)
self.assertEqual(file_object.read(5), b'other')
self.assertEqual(file_object.get_offset(), 15)
file_object.seek(-10, os.SEEK_END)
self.assertEqual(file_object.read(5), b'her f')
file_object.seek(2, os.SEEK_CUR)
self.assertEqual(file_object.read(2), b'e.')
# Conforming to the POSIX seek the offset can exceed the file size
# but reading will result in no data being returned.
file_object.seek(300, os.SEEK_SET)
self.assertEqual(file_object.get_offset(), 300)
self.assertEqual(file_object.read(2), b'')
with self.assertRaises(IOError):
file_object.seek(-10, os.SEEK_SET)
# On error the offset should not change.
self.assertEqual(file_object.get_offset(), 300)
with self.assertRaises(IOError):
file_object.seek(10, 5)
# On error the offset should not change.
self.assertEqual(file_object.get_offset(), 300)
def testRead(self):
"""Test the read functionality."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/passwords.txt',
inode=self._IDENTIFIER_PASSWORDS_TXT,
parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
file_object.Open()
read_buffer = file_object.read()
expected_buffer = (
b'place,user,password\n'
b'bank,joesmith,superrich\n'
b'alarm system,-,1234\n'
b'treasure chest,-,1111\n'
b'uber secret laire,admin,admin\n')
self.assertEqual(read_buffer, expected_buffer)
# TODO: add boundary scenarios.
class TSKFileTestFAT12(test_lib.FAT12ImageFileTestCase):
"""Tests the SleuthKit (TSK) file-like object on FAT-12."""
_IDENTIFIER_ANOTHER_FILE = 584
_IDENTIFIER_PASSWORDS_TXT = 7
def setUp(self):
"""Sets up the needed objects used throughout the test."""
super(TSKFileTestFAT12, self).setUp()
self._resolver_context = context.Context()
test_path = self._GetTestFilePath(['fat12.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)
def tearDown(self):
"""Cleans up the needed objects used throughout the test."""
self._resolver_context.Empty()
def testOpenCloseIdentifier(self):
"""Test the open and close functionality using an identifier."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, inode=self._IDENTIFIER_PASSWORDS_TXT,
parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestOpenCloseIdentifier(file_object)
def testOpenCloseLocation(self):
"""Test the open and close functionality using a location."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/passwords.txt',
parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestOpenCloseLocation(file_object)
# Try open with a path specification that has no parent.
path_spec.parent = None
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
with self.assertRaises(errors.PathSpecError):
self._TestOpenCloseLocation(file_object)
def testSeek(self):
"""Test the seek functionality."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/a_directory/another_file',
inode=self._IDENTIFIER_ANOTHER_FILE, parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestSeek(file_object)
def testRead(self):
"""Test the read functionality."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/passwords.txt',
inode=self._IDENTIFIER_PASSWORDS_TXT, parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestRead(file_object)
class TSKFileTestHFS(test_lib.HFSImageFileTestCase):
"""Tests the SleuthKit (TSK) file-like object on HFS."""
_IDENTIFIER_ANOTHER_FILE = 21
_IDENTIFIER_PASSWORDS_TXT = 20
def setUp(self):
"""Sets up the needed objects used throughout the test."""
super(TSKFileTestHFS, self).setUp()
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)
def tearDown(self):
"""Cleans up the needed objects used throughout the test."""
self._resolver_context.Empty()
def testOpenCloseIdentifier(self):
"""Test the open and close functionality using an identifier."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, inode=self._IDENTIFIER_PASSWORDS_TXT,
parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestOpenCloseIdentifier(file_object)
def testOpenCloseLocation(self):
"""Test the open and close functionality using a location."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/passwords.txt',
parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestOpenCloseLocation(file_object)
# Try open with a path specification that has no parent.
path_spec.parent = None
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
with self.assertRaises(errors.PathSpecError):
self._TestOpenCloseLocation(file_object)
def testSeek(self):
"""Test the seek functionality."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/a_directory/another_file',
inode=self._IDENTIFIER_ANOTHER_FILE, parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestSeek(file_object)
def testRead(self):
"""Test the read functionality."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/passwords.txt',
inode=self._IDENTIFIER_PASSWORDS_TXT, parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestRead(file_object)
def testReadResourceFork(self):
"""Test the read functionality on a resource fork."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, data_stream='rsrc', inode=25,
location='/a_directory/a_resourcefork', parent=self._raw_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestReadResourceFork(file_object)
class TSKFileTestNTFS(test_lib.NTFSImageFileTestCase):
"""Tests the SleuthKit (TSK) file-like object on NTFS."""
def setUp(self):
"""Sets up the needed objects used throughout the test."""
super(TSKFileTestNTFS, self).setUp()
test_path = self._GetTestFilePath(['ntfs.raw'])
self._SkipIfPathNotExists(test_path)
self._os_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_OS, location=test_path)
def testOpenCloseMFTEntry(self):
"""Test the open and close functionality using a MFT entry."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, inode=self._MFT_ENTRY_PASSWORDS_TXT,
parent=self._os_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestOpenCloseMFTEntry(file_object)
def testOpenCloseLocation(self):
"""Test the open and close functionality using a location."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/passwords.txt',
parent=self._os_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestOpenCloseLocation(file_object)
# Try open with a path specification that has no parent.
path_spec.parent = None
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
with self.assertRaises(errors.PathSpecError):
self._TestOpenCloseLocation(file_object)
def testSeek(self):
"""Test the seek functionality."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/a_directory/another_file',
inode=self._MFT_ENTRY_ANOTHER_FILE, parent=self._os_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestSeek(file_object)
def testRead(self):
"""Test the read functionality."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, location='/passwords.txt',
inode=self._MFT_ENTRY_PASSWORDS_TXT, parent=self._os_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestRead(file_object)
def testReadADS(self):
"""Test the read functionality on an alternate data stream (ADS)."""
path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_TSK, data_stream='$SDS', location='/$Secure',
inode=9, parent=self._os_path_spec)
file_object = tsk_file_io.TSKFile(self._resolver_context, path_spec)
self._TestReadADS(file_object)
if __name__ == '__main__':
unittest.main()
|
