def _Open(self, path_spec, mode='rb'):
"""Opens the file system defined by path specification.
Args:
path_spec (PathSpec): path specification.
mode (Optional[str]): file access mode. The default is 'rb' which
represents read-only binary.
Raises:
AccessError: if the access to open the file was denied.
IOError: if the file system could not be opened.
PathSpecError: if the path specification is incorrect.
ValueError: if the path specification is invalid.
"""
if not path_spec.HasParent():
raise errors.PathSpecError(
'Unsupported path specification without parent.')
file_object = resolver.Resolver.OpenFileObject(
path_spec.parent, resolver_context=self._resolver_context)
cpio_archive_file = cpio.CPIOArchiveFile()
try:
cpio_archive_file.Open(file_object)
except:
file_object.close()
raise
self._file_object = file_object
self._cpio_archive_file = cpio_archive_file
def testReadFileEntryOnPortableASCII(self):
"""Tests the _ReadFileEntry function on portable ASCII format."""
test_file = cpio.CPIOArchiveFile()
test_file.file_format = 'odc'
test_file_path = self._GetTestFilePath(['syslog.odc.cpio'])
with open(test_file_path, 'rb') as file_object:
file_io_object = file_object_io.FileObjectIO(
None, file_object=file_object)
file_io_object.open()
file_entry = test_file._ReadFileEntry(file_io_object, 0)
self.assertEqual(file_entry.data_size, 1247)
file_io_object.close()
def testReadFileEntryOnPortableASCII(self):
"""Tests the _ReadFileEntry function on portable ASCII format."""
test_file = cpio.CPIOArchiveFile()
test_file.file_format = 'odc'
test_path = self._GetTestFilePath(['syslog.odc.cpio'])
self._SkipIfPathNotExists(test_path)
test_os_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_OS, location=test_path)
file_object = resolver.Resolver.OpenFileObject(
test_os_path_spec, resolver_context=self._resolver_context)
file_entry = test_file._ReadFileEntry(file_object, 0)
self.assertEqual(file_entry.data_size, 1247)
def testReadFileEntryOnBinary(self):
"""Tests the _ReadFileEntry function on binary format."""
test_file = cpio.CPIOArchiveFile()
test_file.file_format = 'bin-little-endian'
test_file_path = self._GetTestFilePath(['syslog.bin.cpio'])
with open(test_file_path, 'rb') as file_object:
file_io_object = file_object_io.FileObjectIO(
None, file_object=file_object)
file_io_object.open()
file_entry = test_file._ReadFileEntry(file_io_object, 0)
self.assertEqual(file_entry.data_size, 1247)
file_io_object.close()
def testOpenAndCloseOnPortableASCII(self):
"""Tests the Open and Close functions on portable ASCII format."""
test_file = cpio.CPIOArchiveFile()
test_file_path = self._GetTestFilePath(['syslog.odc.cpio'])
with open(test_file_path, 'rb') as file_object:
file_io_object = file_object_io.FileObjectIO(
None, file_object=file_object)
file_io_object.open()
test_file.Open(file_io_object)
self.assertEqual(test_file.file_format, 'odc')
test_file.Close()
file_io_object.close()
def testOpenAndCloseOnBinary(self):
"""Tests the Open and Close functions on binary format."""
test_file = cpio.CPIOArchiveFile()
test_file_path = self._GetTestFilePath(['syslog.bin.cpio'])
with open(test_file_path, 'rb') as file_object:
file_io_object = file_object_io.FileObjectIO(
None, file_object=file_object)
file_io_object.open()
test_file.Open(file_io_object)
self.assertEqual(test_file.file_format, 'bin-little-endian')
test_file.Close()
file_io_object.close()
def testReadFileEntriesOnBinary(self):
"""Tests the _ReadFileEntries function on binary format."""
test_file = cpio.CPIOArchiveFile()
test_file.file_format = 'bin-little-endian'
test_path = self._GetTestFilePath(['syslog.bin.cpio'])
self._SkipIfPathNotExists(test_path)
test_os_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_OS, location=test_path)
file_object = resolver.Resolver.OpenFileObject(
test_os_path_spec, resolver_context=self._resolver_context)
test_file._file_size = file_object.get_size()
test_file._ReadFileEntries(file_object)
self.assertEqual(len(test_file._file_entries), 1)
def testOpenAndCloseOnPortableASCII(self):
"""Tests the Open and Close functions on portable ASCII format."""
test_file = cpio.CPIOArchiveFile()
test_path = self._GetTestFilePath(['syslog.odc.cpio'])
self._SkipIfPathNotExists(test_path)
test_os_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_OS, location=test_path)
file_object = resolver.Resolver.OpenFileObject(
test_os_path_spec, resolver_context=self._resolver_context)
test_file.Open(file_object)
self.assertEqual(test_file.file_format, 'odc')
test_file.Close()
def testReadFileEntryOnNewASCIIWithCRC(self):
"""Tests the _ReadFileEntry function on new ASCII with CRC format."""
test_file = cpio.CPIOArchiveFile()
test_file.file_format = 'crc'
test_file_path = self._GetTestFilePath(['syslog.crc.cpio'])
self._SkipIfPathNotExists(test_file_path)
with open(test_file_path, 'rb') as file_object:
file_io_object = file_object_io.FileObjectIO(
None, file_object=file_object)
file_io_object.open()
file_entry = test_file._ReadFileEntry(file_io_object, 0)
self.assertEqual(file_entry.data_size, 1247)
file_io_object.close()
def testReadFileEntriesOnBinary(self):
"""Tests the _ReadFileEntries function on binary format."""
test_file = cpio.CPIOArchiveFile()
test_file.file_format = 'bin-little-endian'
test_file_path = self._GetTestFilePath(['syslog.bin.cpio'])
self._SkipIfPathNotExists(test_file_path)
with open(test_file_path, 'rb') as file_object:
file_io_object = file_object_io.FileObjectIO(
None, file_object=file_object)
file_io_object.open()
test_file._file_size = file_io_object.get_size()
test_file._ReadFileEntries(file_io_object)
self.assertEqual(len(test_file._file_entries), 1)
file_io_object.close()
def testOpenAndCloseOnNewASCIIWithCRC(self):
"""Tests the Open and Close functions on new ASCII with CRC format."""
test_file = cpio.CPIOArchiveFile()
test_file_path = self._GetTestFilePath(['syslog.crc.cpio'])
self._SkipIfPathNotExists(test_file_path)
with open(test_file_path, 'rb') as file_object:
file_io_object = file_object_io.FileObjectIO(
None, file_object=file_object)
file_io_object.open()
test_file.Open(file_io_object)
self.assertEqual(test_file.file_format, 'crc')
test_file.Close()
file_io_object.close()
def testGetFileEntryByPathOnBinary(self):
"""Tests the GetFileEntryByPath function on binary format."""
test_file = cpio.CPIOArchiveFile()
test_file_path = self._GetTestFilePath(['syslog.bin.cpio'])
with open(test_file_path, 'rb') as file_object:
file_io_object = file_object_io.FileObjectIO(
None, file_object=file_object)
file_io_object.open()
test_file.Open(file_io_object)
file_entry = test_file.GetFileEntryByPath('syslog')
self.assertIsNotNone(file_entry)
file_entry = test_file.GetFileEntryByPath('bogus')
self.assertIsNone(file_entry)
test_file.Close()
file_io_object.close()
def testFileEntryExistsByPathOnBinary(self):
"""Tests the FileEntryExistsByPath function on binary format."""
test_file = cpio.CPIOArchiveFile()
test_file_path = self._GetTestFilePath(['syslog.bin.cpio'])
with open(test_file_path, 'rb') as file_object:
file_io_object = file_object_io.FileObjectIO(
None, file_object=file_object)
file_io_object.open()
test_file.Open(file_io_object)
result = test_file.FileEntryExistsByPath('syslog')
self.assertTrue(result)
result = test_file.FileEntryExistsByPath('bogus')
self.assertFalse(result)
test_file.Close()
file_io_object.close()
def testGetFileEntriesOnBinary(self):
"""Tests the GetFileEntries function on binary format."""
test_file = cpio.CPIOArchiveFile()
test_file_path = self._GetTestFilePath(['syslog.bin.cpio'])
with open(test_file_path, 'rb') as file_object:
file_io_object = file_object_io.FileObjectIO(
None, file_object=file_object)
file_io_object.open()
test_file.Open(file_io_object)
file_entries = list(test_file.GetFileEntries())
self.assertEqual(len(file_entries), 1)
test_file.Close()
file_entries = list(test_file.GetFileEntries())
self.assertEqual(len(file_entries), 0)
file_io_object.close()
def testGetFileEntryByPathOnBinary(self):
"""Tests the GetFileEntryByPath function on binary format."""
test_file = cpio.CPIOArchiveFile()
test_path = self._GetTestFilePath(['syslog.bin.cpio'])
self._SkipIfPathNotExists(test_path)
test_os_path_spec = path_spec_factory.Factory.NewPathSpec(
definitions.TYPE_INDICATOR_OS, location=test_path)
file_object = resolver.Resolver.OpenFileObject(
test_os_path_spec, resolver_context=self._resolver_context)
test_file.Open(file_object)
file_entry = test_file.GetFileEntryByPath('syslog')
self.assertIsNotNone(file_entry)
file_entry = test_file.GetFileEntryByPath('bogus')
self.assertIsNone(file_entry)
test_file.Close()
