cti-python-stix2/stix2/common.py

"""STIX 2 Common Data Types and Properties"""

from .base import _STIXBase
from .properties import (Property, ListProperty, StringProperty, BooleanProperty,
                         ReferenceProperty, TimestampProperty)
from .utils import NOW

COMMON_PROPERTIES = {
    # 'type' and 'id' should be defined on each individual type
    'created': TimestampProperty(default=lambda: NOW),
    'modified': TimestampProperty(default=lambda: NOW),
    'external_references': Property(),
    'revoked': BooleanProperty(),
    'created_by_ref': ReferenceProperty(type="identity"),
    'object_marking_refs': ListProperty(ReferenceProperty(type="marking-definition")),
    'granular_markings': ListProperty(Property)
}


class ExternalReference(_STIXBase):
    _properties = {
        'source_name': StringProperty(required=True),
        'description': StringProperty(),
        'url': StringProperty(),
        'external_id': StringProperty(),
    }


class KillChainPhase(_STIXBase):
    _properties = {
        'kill_chain_name': StringProperty(required=True),
        'phase_name': StringProperty(required=True),
    }