def test_custom_list(self, mock_mimetypes_init, isfile):
mimetypes_file = Path.objects.create(
entity="path_mimetypes_definitionfile", value='path/to/mime.types')
fid = FormatIdentifier(allow_unknown_file_types=True)
fid._init_mimetypes()
mock_mimetypes_init.assert_called_once_with(
files=[mimetypes_file.value])
def test_handle_matches_when_no_matches(self, mock_mimetypes_init):
fid = FormatIdentifier(allow_unknown_file_types=True)
fid.handle_matches('fullname', [], mock.ANY)
self.assertEqual(fid.format_name, 'Unknown File Format')
self.assertEqual(fid.format_version, None)
self.assertEqual(fid.format_registry_key, None)
def test_handle_matches_when_no_match_on_name_or_version_or_reg_key(
self, mock_mimetypes_init):
fid = FormatIdentifier(allow_unknown_file_types=True)
dummy_matches = [('a', 'b'), ('c', 'd')]
fid.handle_matches('fullname', dummy_matches, mock.ANY)
self.assertEqual(fid.format_name, None)
self.assertEqual(fid.format_version, None)
self.assertEqual(fid.format_registry_key, None)
def setUp(self):
self.content = b'test file'
self.test_file = tempfile.NamedTemporaryFile(suffix='.txt', delete=False)
self.addCleanup(os.remove, self.test_file.name)
self.test_file.write(self.content)
self.test_file.seek(0)
self.test_file.close()
fid = FormatIdentifier()
self.expected = fid.identify_file_format(self.test_file.name)
class FormatValidator(BaseValidator):
"""
Validates the format of a file against the given ``context``.
"""
def __init__(self, *args, **kwargs):
super(FormatValidator, self).__init__(*args, **kwargs)
allow_unknown = self.options.get('allow_unknown_file_types', False)
self.fid = FormatIdentifier(allow_unknown_file_types=allow_unknown)
def validate(self, filepath, expected=None):
logger.debug('Validating format of %s' % filepath)
name, version, reg_key = expected
if not any(f is not None for f in (name, version, reg_key)):
raise ValueError(
'At least one of name, version and registry key is required')
val_obj = Validation.objects.create(filename=filepath,
time_started=timezone.now(),
validator=self.__class__.__name__,
required=self.required,
task=self.task,
information_package=self.ip,
responsible=self.responsible,
specification={
'context': self.context,
'options': self.options,
})
passed = False
try:
actual_name, actual_version, actual_reg_key = self.fid.identify_file_format(
filepath)
if name and name != actual_name:
raise ValidationError(
"format name for {} is not valid, ({} !={})".format(
filepath, name, actual_name))
if version and version != actual_version:
raise ValidationError(
"format version for {} is not valid, ({} != {})".format(
filepath, version, actual_version))
if reg_key and reg_key != actual_reg_key:
raise ValidationError(
"format registry key for {} is not valid, ({} != {})".
format(filepath, reg_key, actual_reg_key))
passed = True
except ValidationError:
val_obj.message = traceback.format_exc()
raise
else:
message = 'Successfully validated checksum of %s' % filepath
val_obj.message = message
logger.info(message)
finally:
val_obj.time_done = timezone.now()
val_obj.passed = passed
val_obj.save(update_fields=['time_done', 'passed', 'message'])
def __init__(self, filepath=None):
self.parser = etree.XMLParser(remove_blank_text=True)
self.fid = FormatIdentifier(allow_unknown_file_types=False)
if filepath is not None:
self.tree = etree.parse(filepath, parser=self.parser)
else:
self.tree = None
def index_document(tag_version, filepath):
exclude_file_format_from_indexing_content = settings.EXCLUDE_FILE_FORMAT_FROM_INDEXING_CONTENT
fid = FormatIdentifier()
(format_name, format_version, format_registry_key) = fid.identify_file_format(filepath)
if format_registry_key not in exclude_file_format_from_indexing_content:
index_file_content = True
else:
index_file_content = False
ip = tag_version.tag.information_package
extension = os.path.splitext(tag_version.name)[1][1:]
dirname = os.path.dirname(filepath)
href = normalize_path(os.path.relpath(dirname, ip.object_path))
href = '' if href == '.' else href
size, _ = get_tree_size_and_count(filepath)
modified = timestamp_to_datetime(os.stat(filepath).st_mtime)
tag_version.custom_fields = {
'extension': extension,
'dirname': dirname,
'href': href,
'filename': tag_version.name,
'size': size,
'modified': modified,
'formatname': format_name,
'formatversion': format_version,
'formatkey': format_registry_key,
}
doc = File.from_obj(tag_version)
try:
if index_file_content:
with open(filepath, 'rb') as f:
content = f.read()
doc.data = base64.b64encode(content).decode("ascii")
doc.save(pipeline='ingest_attachment')
else:
logger.debug('Skip to index file content for {}'.format(filepath))
doc.save()
except ElasticsearchException:
logger.exception('Failed to index {}'.format(filepath))
raise
return doc, tag_version
def validate_file_format(filename, format_name, format_registry_key,
format_version):
"""
Validates the format of the given file
"""
fid = FormatIdentifier()
actual_format_name, actual_format_version, actual_format_registry_key = fid.identify_file_format(
filename)
if format_name:
assert actual_format_name == format_name, (
"format name for %s is not valid, (%s != %s)" % filename,
format_name, actual_format_name)
if format_version:
assert actual_format_version == format_version, "format version for %s is not valid" % filename
if format_registry_key:
assert actual_format_registry_key == format_registry_key, (
"format registry key for %s is not valid" % filename)
return "Success"
def get_path_response(self,
path,
request,
force_download=False,
paginator=None):
self.validate_path(path)
try:
if not path:
raise OSError(errno.EISDIR, os.strerror(errno.EISDIR), path)
if os.path.isfile(self.object_path):
container_path = os.path.join(
os.path.dirname(self.object_path),
path.split('/', 1)[0])
container_path = normalize_path(container_path)
if container_path == self.object_path:
path = path.split('/', 1)[1]
fid = FormatIdentifier(allow_unknown_file_types=True)
content_type = fid.get_mimetype(path)
return generate_file_response(self.open_file(path, 'rb'),
content_type,
force_download=force_download,
name=path)
except (IOError, OSError) as e:
if e.errno == errno.ENOENT:
raise exceptions.NotFound
# Windows raises PermissionDenied (errno.EACCES) when trying to use
# open() on a directory
if os.name == 'nt':
if e.errno not in (errno.EACCES, errno.EISDIR):
raise
elif e.errno != errno.EISDIR:
raise
except IndexError:
if force_download:
fid = FormatIdentifier(allow_unknown_file_types=True)
content_type = fid.get_mimetype(path)
return generate_file_response(self.open_file(
self.object_path, 'rb'),
content_type,
force_download=force_download,
name=path)
entries = self.list_files(path)
if paginator is not None:
paginated = paginator.paginate_queryset(entries, request)
return paginator.get_paginated_response(paginated)
return Response(entries)
def test_default_list(self, mock_mimetypes_init):
fid = FormatIdentifier(allow_unknown_file_types=True)
fid._init_mimetypes()
mock_mimetypes_init.assert_called_once_with()
def test_gzipped_file(self, mock_mimetypes_init):
fid = FormatIdentifier(allow_unknown_file_types=True)
self.assertEqual(fid.get_mimetype('foo.tar.gz'), 'application/gzip')
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
allow_unknown = self.options.get('allow_unknown_file_types', False)
self.fid = FormatIdentifier(allow_unknown_file_types=allow_unknown)
def list_files(path, force_download=False, request=None, paginator=None):
if isinstance(path, list):
if paginator is not None:
paginated = paginator.paginate_queryset(path, request)
return paginator.get_paginated_response(paginated)
return Response(path)
fid = FormatIdentifier(allow_unknown_file_types=True)
path = path.rstrip('/ ')
if os.path.isfile(path):
if tarfile.is_tarfile(path):
with tarfile.open(path) as tar:
entries = []
for member in tar.getmembers():
if not member.isfile():
continue
entries.append({
"name": member.name,
"type": 'file',
"size": member.size,
"modified": timestamp_to_datetime(member.mtime),
})
if paginator is not None:
paginated = paginator.paginate_queryset(entries, request)
return paginator.get_paginated_response(paginated)
return Response(entries)
elif zipfile.is_zipfile(path) and os.path.splitext(path)[1] == '.zip':
with zipfile.ZipFile(path) as zipf:
entries = []
for member in zipf.filelist:
if member.filename.endswith('/'):
continue
entries.append({
"name": member.filename,
"type": 'file',
"size": member.file_size,
"modified": datetime(*member.date_time),
})
if paginator is not None:
paginated = paginator.paginate_queryset(entries, request)
return paginator.get_paginated_response(paginated)
return Response(entries)
content_type = fid.get_mimetype(path)
return generate_file_response(open(path, 'rb'), content_type, force_download)
if os.path.isdir(path):
entries = []
for entry in sorted(get_files_and_dirs(path), key=lambda x: x.name):
entry_type = "dir" if entry.is_dir() else "file"
size, _ = get_tree_size_and_count(entry.path)
entries.append(
{
"name": os.path.basename(entry.path),
"type": entry_type,
"size": size,
"modified": timestamp_to_datetime(entry.stat().st_mtime),
}
)
if paginator is not None and request is not None:
paginated = paginator.paginate_queryset(entries, request)
return paginator.get_paginated_response(paginated)
if len(path.split('.tar/')) == 2:
tar_path, tar_subpath = path.split('.tar/')
tar_path += '.tar'
with tarfile.open(tar_path) as tar:
try:
f = io.BytesIO(tar.extractfile(tar_subpath).read())
content_type = fid.get_mimetype(tar_subpath)
return generate_file_response(f, content_type, force_download, name=tar_subpath)
except KeyError:
raise NotFound
if len(path.split('.zip/')) == 2:
zip_path, zip_subpath = path.split('.zip/')
zip_path += '.zip'
with zipfile.ZipFile(zip_path) as zipf:
try:
f = io.BytesIO(zipf.read(zip_subpath))
content_type = fid.get_mimetype(zip_subpath)
return generate_file_response(f, content_type, force_download, name=zip_subpath)
except KeyError:
raise NotFound
raise NotFound
def cli(path):
fid = FormatIdentifier()
res = fid.identify_file_format(path)
click.echo(res)
def test_handle_matches_when_no_matches_and_unknown_types_not_allowed(
self, mock_mimetypes_init):
fid = FormatIdentifier(allow_unknown_file_types=False)
with self.assertRaises(ValueError):
fid.handle_matches('fullname', [], mock.ANY)
def test_unknown_content_type_when_not_allowed_should_raise_exception(
self, mock_mimetypes_init):
fid = FormatIdentifier(allow_unknown_file_types=False)
with self.assertRaises(FileFormatNotAllowed):
fid.get_mimetype('some_random_file')
def test_unknown_content_type(self, mock_mimetypes_init):
fid = FormatIdentifier(allow_unknown_file_types=True)
self.assertEqual(fid.get_mimetype('some_random_file'),
DEFAULT_MIMETYPE)
def fid(self):
if self._fid is not None:
return self._fid
self._fid = FormatIdentifier()
