cti-python-stix2/stix2/v20/bundle.py

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"""STIX 2.0 Bundle Representation."""
from collections import OrderedDict
from ..properties import (
IDProperty, ListProperty, STIXObjectProperty, StringProperty, TypeProperty,
)
from .base import _STIXBase20
class Bundle(_STIXBase20):
"""For more detailed information on this object's properties, see
`the STIX 2.0 specification <http://docs.oasis-open.org/cti/stix/v2.0/cs01/part1-stix-core/stix-v2.0-cs01-part1-stix-core.html#_Toc496709293>`__.
"""
_type = 'bundle'
_properties = OrderedDict([
('type', TypeProperty(_type, spec_version='2.0')),
('id', IDProperty(_type, spec_version='2.0')),
# Not technically correct: STIX 2.0 spec doesn't say spec_version must
# have this value, but it's all we support for now.
('spec_version', StringProperty(fixed='2.0')),
('objects', ListProperty(STIXObjectProperty(spec_version="2.0"))),
])
def __init__(self, *args, **kwargs):
# Add any positional arguments to the 'objects' kwarg.
if args:
if isinstance(args[0], list):
kwargs['objects'] = args[0] + list(args[1:]) + kwargs.get('objects', [])
else:
kwargs['objects'] = list(args) + kwargs.get('objects', [])
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self._allow_custom = kwargs.get('allow_custom', False)
self._properties['objects'].contained.allow_custom = kwargs.get('allow_custom', False)
super(Bundle, self).__init__(**kwargs)
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def get_obj(self, obj_uuid):
if "objects" in self._inner:
found_objs = [elem for elem in self.objects if elem['id'] == obj_uuid]
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if found_objs == []:
raise KeyError("'%s' does not match the id property of any of the bundle's objects" % obj_uuid)
return found_objs
else:
raise KeyError("There are no objects in this empty bundle")
def __getitem__(self, key):
try:
return super(Bundle, self).__getitem__(key)
except KeyError:
try:
return self.get_obj(key)
except KeyError:
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raise KeyError("'%s' is neither a property on the bundle nor does it match the id property of any of the bundle's objects" % key)