def _generate_id(self):
"""
Generate a UUIDv5 for this observable, using its "ID contributing
properties".
:return: The ID, or None if no ID contributing properties are set
"""
id_ = None
json_serializable_object = {}
for key in self._id_contributing_properties:
if key in self:
obj_value = self[key]
if key == "hashes":
serializable_value = _choose_one_hash(obj_value)
if serializable_value is None:
raise InvalidValueError(
self,
key,
"No hashes given",
)
else:
serializable_value = _make_json_serializable(obj_value)
json_serializable_object[key] = serializable_value
if json_serializable_object:
data = canonicalize(json_serializable_object, utf8=False)
# The situation is complicated w.r.t. python 2/3 behavior, so
# I'd rather not rely on particular exceptions being raised to
# determine what to do. Better to just check the python version
# directly.
if six.PY3:
uuid_ = uuid.uuid5(SCO_DET_ID_NAMESPACE, data)
else:
uuid_ = uuid.uuid5(
SCO_DET_ID_NAMESPACE,
data.encode("utf-8"),
)
id_ = "{}--{}".format(self._type, six.text_type(uuid_))
return id_
def generate_sco_id(type, instance):
required_prefix = type + "--"
if not _SCO_CLASSES:
# compute it once
module = importlib.import_module("stix2.v21")
for k, c in inspect.getmembers(module, inspect.isclass):
if hasattr(c, "_properties") and "type" in c._properties:
_SCO_CLASSES[c._properties["type"]._fixed_value] = c
if type in _SCO_CLASSES:
klass = _SCO_CLASSES[type]
if klass and hasattr(klass, "_id_contributing_properties"
) and klass._id_contributing_properties:
contributing_properties = klass._id_contributing_properties
# streamlined_obj_vals = []
streamlined_object = {}
possible_hash = None
if "hashes" in instance and "hashes" in contributing_properties:
possible_hash = _choose_one_hash(instance["hashes"])
if possible_hash:
# streamlined_obj_vals.append(possible_hash)
streamlined_object["hashes"] = possible_hash
for key in contributing_properties:
if key != "hashes" and key in instance:
# We don't need to handle the isinstance(...) cases here
# because the elevator uses Python default containers
# to represent its content.
# streamlined_obj_vals.append(instance[key])
streamlined_object[key] = instance[key]
# if streamlined_obj_vals:
if streamlined_object:
# data = canonicalize(streamlined_obj_vals, utf8=False)
data = canonicalize(streamlined_object, utf8=False)
# try/except here to enable python 2 compatibility
try:
return required_prefix + text_type(
uuid.uuid5(SCO_DET_ID_NAMESPACE, data))
except UnicodeDecodeError:
return required_prefix + text_type(
uuid.uuid5(SCO_DET_ID_NAMESPACE, data.encode("utf-8")))
return required_prefix + text_type(uuid.uuid4())
def _generate_id(self, kwargs):
required_prefix = self._type + "--"
properties_to_use = self._id_contributing_properties
if properties_to_use:
streamlined_obj_vals = []
if "hashes" in kwargs and "hashes" in properties_to_use:
possible_hash = _choose_one_hash(kwargs["hashes"])
if possible_hash:
streamlined_obj_vals.append(possible_hash)
for key in properties_to_use:
if key != "hashes" and key in kwargs:
if isinstance(kwargs[key], dict) or isinstance(
kwargs[key], _STIXBase):
temp_deep_copy = copy.deepcopy(dict(kwargs[key]))
_recursive_stix_to_dict(temp_deep_copy)
streamlined_obj_vals.append(temp_deep_copy)
elif isinstance(kwargs[key], list) and isinstance(
kwargs[key][0], _STIXBase):
for obj in kwargs[key]:
temp_deep_copy = copy.deepcopy(dict(obj))
_recursive_stix_to_dict(temp_deep_copy)
streamlined_obj_vals.append(temp_deep_copy)
else:
streamlined_obj_vals.append(kwargs[key])
if streamlined_obj_vals:
data = canonicalize(streamlined_obj_vals, utf8=False)
# The situation is complicated w.r.t. python 2/3 behavior, so
# I'd rather not rely on particular exceptions being raised to
# determine what to do. Better to just check the python version
# directly.
if six.PY3:
return required_prefix + six.text_type(
uuid.uuid5(SCO_DET_ID_NAMESPACE, data))
else:
return required_prefix + six.text_type(
uuid.uuid5(SCO_DET_ID_NAMESPACE, data.encode("utf-8")))
# We return None if there are no values specified for any of the id-contributing-properties
return None
def _generate_id(self, kwargs):
required_prefix = self._type + "--"
properties_to_use = self._id_contributing_properties
if properties_to_use:
streamlined_obj_vals = []
if "hashes" in kwargs and "hashes" in properties_to_use:
possible_hash = _choose_one_hash(kwargs["hashes"])
if possible_hash:
streamlined_obj_vals.append(possible_hash)
for key in properties_to_use:
if key != "hashes" and key in kwargs:
if isinstance(kwargs[key], dict) or isinstance(
kwargs[key], _STIXBase):
temp_deep_copy = copy.deepcopy(dict(kwargs[key]))
_recursive_stix_to_dict(temp_deep_copy)
streamlined_obj_vals.append(temp_deep_copy)
elif isinstance(kwargs[key], list) and isinstance(
kwargs[key][0], _STIXBase):
for obj in kwargs[key]:
temp_deep_copy = copy.deepcopy(dict(obj))
_recursive_stix_to_dict(temp_deep_copy)
streamlined_obj_vals.append(temp_deep_copy)
else:
streamlined_obj_vals.append(kwargs[key])
if streamlined_obj_vals:
data = canonicalize(streamlined_obj_vals, utf8=False)
# try/except here to enable python 2 compatibility
try:
return required_prefix + six.text_type(
uuid.uuid5(SCO_DET_ID_NAMESPACE, data))
except UnicodeDecodeError:
return required_prefix + six.text_type(
uuid.uuid5(SCO_DET_ID_NAMESPACE,
six.binary_type(data)))
# We return None if there are no values specified for any of the id-contributing-properties
return None
def _generate_id(self):
"""
Generate a UUIDv5 for this observable, using its "ID contributing
properties".
:return: The ID, or None if no ID contributing properties are set
"""
id_ = None
json_serializable_object = {}
for key in self._id_contributing_properties:
if key in self:
obj_value = self[key]
if key == "hashes":
serializable_value = _choose_one_hash(obj_value)
if serializable_value is None:
raise InvalidValueError(
self,
key,
"No hashes given",
)
else:
serializable_value = _make_json_serializable(obj_value)
json_serializable_object[key] = serializable_value
if json_serializable_object:
data = canonicalize(json_serializable_object, utf8=False)
uuid_ = uuid.uuid5(SCO_DET_ID_NAMESPACE, data)
id_ = "{}--{}".format(self._type, str(uuid_))
return id_
