def testRead(self):
"""Test the read functionality."""
file_object = gzip_file_io.GzipFile(
self._resolver_context, self._gzip_path_spec)
file_object.Open()
self._TestReadFileObject(file_object)
def testReadMultipleMembers(self):
"""Tests reading a file that contains multiple gzip members."""
test_file = self._GetTestFilePath(['fsevents_000000000000b208'])
parent_path_spec = os_path_spec.OSPathSpec(location=test_file)
path_spec = gzip_path_spec.GzipPathSpec(parent=parent_path_spec)
file_object = gzip_file_io.GzipFile(self._resolver_context)
file_object.open(path_spec=path_spec)
self.assertEqual(file_object.uncompressed_data_size, 506631)
self.assertEqual(file_object.modification_times, [0, 0])
self.assertEqual(file_object.operating_systems, [3, 3])
self.assertEqual(file_object.original_filenames, [None, None])
self.assertEqual(file_object.comments, [None, None])
file_start = file_object.read(4)
self.assertEqual(file_start, b'1SLD')
# Read the end of the second member
file_object.seek(506631 - 4)
file_end = file_object.read(4)
self.assertEqual(file_end, b'\x02\x00\x80\x00')
# Seek backwards, and read across a member boundary.
file_object.seek(28530)
self.assertEqual(file_object.read(6), b'OS\x00P\x07\x00')
file_object.close()
def testSeek(self):
"""Test the seek functionality."""
file_object = gzip_file_io.GzipFile(self._resolver_context)
file_object.open(path_spec=self._gzip_path_spec)
self._TestSeekFileObject(file_object)
file_object.close()
def NewFileObject(self, resolver_context):
"""Creates a new file-like object.
Args:
resolver_context (Context): resolver context.
Returns:
FileIO: file-like object.
"""
return gzip_file_io.GzipFile(resolver_context)
def testOpenClosePathSpec(self):
"""Test the open and close functionality using a path specification."""
file_object = gzip_file_io.GzipFile(
self._resolver_context, self._gzip_path_spec)
file_object.Open()
self._TestGetSizeFileObject(file_object)
self.assertEqual(file_object.modification_times, [0x501416d7])
self.assertEqual(file_object.operating_systems, [0x03])
self.assertEqual(file_object.original_filenames, ['syslog.1'])
self.assertEqual(file_object.comments, [None])
def testOpenClosePathSpec(self):
"""Test the open and close functionality using a path specification."""
file_object = gzip_file_io.GzipFile(self._resolver_context)
file_object.open(path_spec=self._gzip_path_spec)
self._TestGetSizeFileObject(file_object)
self.assertEqual(file_object.modification_time, 0x501416d7)
self.assertEqual(file_object.operating_system, 0x03)
self.assertEqual(file_object.original_filename, u'syslog.1')
self.assertEqual(file_object.comment, None)
file_object.close()
def testReadCorrupt(self):
"""Tests reading a file that is corrupt."""
# The corrupt gzip has no member footer.
test_path = self._GetTestFilePath(['corrupt1.gz'])
test_os_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_OS, location=test_path)
test_gzip_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_GZIP, parent=test_os_path_spec)
file_object = gzip_file_io.GzipFile(self._resolver_context)
with self.assertRaises(errors.FileFormatError):
file_object.open(path_spec=test_gzip_path_spec)
def testReadCorrupt(self):
"""Tests reading a file that is corrupt."""
# The corrupt gzip has no member footer.
test_path = self._GetTestFilePath(['corrupt1.gz'])
self._SkipIfPathNotExists(test_path)
test_os_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_OS, location=test_path)
test_gzip_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_GZIP, parent=test_os_path_spec)
file_object = gzip_file_io.GzipFile(self._resolver_context)
file_object.open(path_spec=test_gzip_path_spec)
self.assertEqual(file_object.uncompressed_data_size, 2994187)
def testReadMultipleMembers(self):
"""Tests reading a file that contains multiple gzip members."""
test_path = self._GetTestFilePath(['fsevents_000000000000b208'])
self._SkipIfPathNotExists(test_path)
test_os_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_OS, location=test_path)
test_gzip_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_GZIP, parent=test_os_path_spec)
file_object = gzip_file_io.GzipFile(self._resolver_context)
file_object.open(path_spec=test_gzip_path_spec)
self.assertEqual(file_object.uncompressed_data_size, 506631)
self.assertEqual(file_object.modification_times, [0, 0])
self.assertEqual(file_object.operating_systems, [3, 3])
self.assertEqual(file_object.original_filenames, [None, None])
self.assertEqual(file_object.comments, [None, None])
file_start = file_object.read(4)
self.assertEqual(file_start, b'1SLD')
# Read the end of the second member
file_object.seek(506631 - 4)
file_end = file_object.read(4)
self.assertEqual(file_end, b'\x02\x00\x80\x00')
# Seek backwards, and read across a member boundary.
file_object.seek(28530)
self.assertEqual(file_object.read(6), b'OS\x00P\x07\x00')
# Read with a size greater than the file size.
file_object.seek(0)
data = file_object.read(size=506631 + 4)
self.assertEqual(len(data), 506631)
self.assertEqual(data[-4:], b'\x02\x00\x80\x00')
file_object.close()
