import datetime import pytest import stix2 import stix2.exceptions import stix2.utils import stix2.v21 import stix2.versioning from .constants import CAMPAIGN_MORE_KWARGS def test_making_new_version(): campaign_v1 = stix2.v21.Campaign(**CAMPAIGN_MORE_KWARGS) campaign_v2 = campaign_v1.new_version(name="fred") assert campaign_v1.id == campaign_v2.id assert campaign_v1.spec_version == campaign_v2.spec_version assert campaign_v1.created_by_ref == campaign_v2.created_by_ref assert campaign_v1.created == campaign_v2.created assert campaign_v1.name != campaign_v2.name assert campaign_v2.name == "fred" assert campaign_v1.description == campaign_v2.description assert campaign_v1.modified < campaign_v2.modified def test_making_new_version_with_unset(): campaign_v1 = stix2.v21.Campaign(**CAMPAIGN_MORE_KWARGS) campaign_v2 = campaign_v1.new_version(description=None) assert campaign_v1.id == campaign_v2.id assert campaign_v1.spec_version == campaign_v2.spec_version assert campaign_v1.created_by_ref == campaign_v2.created_by_ref assert campaign_v1.created == campaign_v2.created assert campaign_v1.name == campaign_v2.name with pytest.raises(AttributeError): assert campaign_v2.description assert campaign_v1.modified < campaign_v2.modified def test_making_new_version_with_embedded_object(): campaign_v1 = stix2.v21.Campaign( external_references=[{ "source_name": "capec", "external_id": "CAPEC-163", }], **CAMPAIGN_MORE_KWARGS ) campaign_v2 = campaign_v1.new_version(external_references=[{ "source_name": "capec", "external_id": "CAPEC-164", }]) assert campaign_v1.id == campaign_v2.id assert campaign_v1.spec_version == campaign_v2.spec_version assert campaign_v1.created_by_ref == campaign_v2.created_by_ref assert campaign_v1.created == campaign_v2.created assert campaign_v1.name == campaign_v2.name assert campaign_v1.description == campaign_v2.description assert campaign_v1.modified < campaign_v2.modified assert campaign_v1.external_references[0].external_id != campaign_v2.external_references[0].external_id def test_revoke(): campaign_v1 = stix2.v21.Campaign(**CAMPAIGN_MORE_KWARGS) campaign_v2 = campaign_v1.revoke() assert campaign_v1.id == campaign_v2.id assert campaign_v1.spec_version == campaign_v2.spec_version assert campaign_v1.created_by_ref == campaign_v2.created_by_ref assert campaign_v1.created == campaign_v2.created assert campaign_v1.name == campaign_v2.name assert campaign_v1.description == campaign_v2.description assert campaign_v1.modified < campaign_v2.modified assert campaign_v2.revoked def test_versioning_error_invalid_property(): campaign_v1 = stix2.v21.Campaign(**CAMPAIGN_MORE_KWARGS) with pytest.raises(stix2.exceptions.UnmodifiablePropertyError) as excinfo: campaign_v1.new_version(type="threat-actor") assert str(excinfo.value) == "These properties cannot be changed when making a new version: type." def test_versioning_error_bad_modified_value(): campaign_v1 = stix2.v21.Campaign(**CAMPAIGN_MORE_KWARGS) with pytest.raises(stix2.exceptions.InvalidValueError) as excinfo: campaign_v1.new_version(modified="2015-04-06T20:03:00.000Z") assert excinfo.value.cls == stix2.v21.Campaign assert excinfo.value.prop_name == "modified" assert excinfo.value.reason == ( "The new modified datetime cannot be before than or equal to the current modified datetime." "It cannot be equal, as according to STIX 2 specification, objects that are different " "but have the same id and modified timestamp do not have defined consumer behavior." ) msg = "Invalid value for {0} '{1}': {2}" msg = msg.format( stix2.v21.Campaign.__name__, "modified", "The new modified datetime cannot be before than or equal to the current modified datetime." "It cannot be equal, as according to STIX 2 specification, objects that are different " "but have the same id and modified timestamp do not have defined consumer behavior.", ) assert str(excinfo.value) == msg def test_versioning_error_usetting_required_property(): campaign_v1 = stix2.v21.Campaign(**CAMPAIGN_MORE_KWARGS) with pytest.raises(stix2.exceptions.MissingPropertiesError) as excinfo: campaign_v1.new_version(name=None) assert excinfo.value.cls == stix2.v21.Campaign assert excinfo.value.properties == ["name"] msg = "No values for required properties for {0}: ({1})." msg = msg.format(stix2.v21.Campaign.__name__, "name") assert str(excinfo.value) == msg def test_versioning_error_new_version_of_revoked(): campaign_v1 = stix2.v21.Campaign(**CAMPAIGN_MORE_KWARGS) campaign_v2 = campaign_v1.revoke() with pytest.raises(stix2.exceptions.RevokeError) as excinfo: campaign_v2.new_version(name="barney") assert str(excinfo.value) == "Cannot create a new version of a revoked object." assert excinfo.value.called_by == "new_version" assert str(excinfo.value) == "Cannot create a new version of a revoked object." def test_versioning_error_revoke_of_revoked(): campaign_v1 = stix2.v21.Campaign(**CAMPAIGN_MORE_KWARGS) campaign_v2 = campaign_v1.revoke() with pytest.raises(stix2.exceptions.RevokeError) as excinfo: campaign_v2.revoke() assert str(excinfo.value) == "Cannot revoke an already revoked object." assert excinfo.value.called_by == "revoke" assert str(excinfo.value) == "Cannot revoke an already revoked object." def test_making_new_version_dict(): campaign_v1 = CAMPAIGN_MORE_KWARGS campaign_v2 = stix2.versioning.new_version(CAMPAIGN_MORE_KWARGS, name="fred") assert campaign_v1['id'] == campaign_v2['id'] assert campaign_v1['spec_version'] == campaign_v2['spec_version'] assert campaign_v1['created_by_ref'] == campaign_v2['created_by_ref'] assert campaign_v1['created'] == campaign_v2['created'] assert campaign_v1['name'] != campaign_v2['name'] assert campaign_v2['name'] == "fred" assert campaign_v1['description'] == campaign_v2['description'] assert stix2.utils.parse_into_datetime(campaign_v1['modified'], precision='millisecond') < campaign_v2['modified'] def test_versioning_error_dict_bad_modified_value(): with pytest.raises(stix2.exceptions.InvalidValueError) as excinfo: stix2.versioning.new_version(CAMPAIGN_MORE_KWARGS, modified="2015-04-06T20:03:00.000Z") assert excinfo.value.cls == dict assert excinfo.value.prop_name == "modified" assert excinfo.value.reason == "The new modified datetime cannot be before than or equal to the current modified datetime." \ "It cannot be equal, as according to STIX 2 specification, objects that are different " \ "but have the same id and modified timestamp do not have defined consumer behavior." def test_versioning_error_dict_no_modified_value(): campaign_v1 = { 'type': 'campaign', 'id': "campaign--8e2e2d2b-17d4-4cbf-938f-98ee46b3cd3f", 'created': "2016-04-06T20:03:00.000Z", 'name': "Green Group Attacks Against Finance", } campaign_v2 = stix2.versioning.new_version(campaign_v1, modified="2017-04-06T20:03:00.000Z") assert str(campaign_v2['modified']) == "2017-04-06T20:03:00.000Z" def test_making_new_version_invalid_cls(): campaign_v1 = "This is a campaign." with pytest.raises(ValueError) as excinfo: stix2.versioning.new_version(campaign_v1, name="fred") assert 'cannot create new version of object of this type' in str(excinfo.value) def test_revoke_dict(): campaign_v1 = CAMPAIGN_MORE_KWARGS campaign_v2 = stix2.versioning.revoke(campaign_v1) assert campaign_v1['id'] == campaign_v2['id'] assert campaign_v1['spec_version'] == campaign_v2['spec_version'] assert campaign_v1['created_by_ref'] == campaign_v2['created_by_ref'] assert campaign_v1['created'] == campaign_v2['created'] assert campaign_v1['name'] == campaign_v2['name'] assert campaign_v1['description'] == campaign_v2['description'] assert stix2.utils.parse_into_datetime(campaign_v1['modified'], precision='millisecond') < campaign_v2['modified'] assert campaign_v2['revoked'] def test_revoke_unversionable(): sco = stix2.v21.File(name="data.txt") with pytest.raises(ValueError): sco.revoke() def test_versioning_error_revoke_of_revoked_dict(): campaign_v1 = CAMPAIGN_MORE_KWARGS campaign_v2 = stix2.versioning.revoke(campaign_v1) with pytest.raises(stix2.exceptions.RevokeError) as excinfo: stix2.versioning.revoke(campaign_v2) assert excinfo.value.called_by == "revoke" def test_revoke_invalid_cls(): campaign_v1 = "This is a campaign." with pytest.raises(ValueError) as excinfo: stix2.versioning.revoke(campaign_v1) assert 'cannot revoke object of this type' in str(excinfo.value) def test_remove_custom_stix_property(): mal = stix2.v21.Malware( name="ColePowers", malware_types=["rootkit"], x_custom="armada", allow_custom=True, is_family=False, ) mal_nc = stix2.versioning.remove_custom_stix(mal) assert "x_custom" not in mal_nc assert mal["modified"] < mal_nc["modified"] def test_remove_custom_stix_object(): @stix2.v21.CustomObject( "x-animal", [ ("species", stix2.properties.StringProperty(required=True)), ("animal_class", stix2.properties.StringProperty()), ], ) class Animal(object): pass animal = Animal(species="lion", animal_class="mammal") nc = stix2.versioning.remove_custom_stix(animal) assert nc is None def test_remove_custom_stix_no_custom(): campaign_v1 = stix2.v21.Campaign(**CAMPAIGN_MORE_KWARGS) campaign_v2 = stix2.versioning.remove_custom_stix(campaign_v1) assert len(campaign_v1.keys()) == len(campaign_v2.keys()) assert campaign_v1.id == campaign_v2.id assert campaign_v1.description == campaign_v2.description @pytest.mark.parametrize( "old, candidate_new, expected_new, use_stix21", [ ("1999-08-15T00:19:07.000Z", "1999-08-15T00:19:07.001Z", "1999-08-15T00:19:07.001Z", False), ("1999-08-15T00:19:07.000Z", "1999-08-15T00:19:07.000Z", "1999-08-15T00:19:07.001Z", False), ("1999-08-15T00:19:07.000Z", "1999-08-15T00:19:06.000Z", "1999-08-15T00:19:07.001Z", False), ("1999-08-15T00:19:07.000Z", "1999-08-15T00:19:06.999Z", "1999-08-15T00:19:07.001Z", False), ("1999-08-15T00:19:07.000Z", "1999-08-15T00:19:07.0001Z", "1999-08-15T00:19:07.001Z", False), ("1999-08-15T00:19:07.999Z", "1999-08-15T00:19:07.9999Z", "1999-08-15T00:19:08.000Z", False), ("1999-08-15T00:19:07.000Z", "1999-08-15T00:19:07.001Z", "1999-08-15T00:19:07.001Z", True), ("1999-08-15T00:19:07.000Z", "1999-08-15T00:19:07.000Z", "1999-08-15T00:19:07.000001Z", True), ("1999-08-15T00:19:07.000Z", "1999-08-15T00:19:06.000Z", "1999-08-15T00:19:07.000001Z", True), ("1999-08-15T00:19:07.000Z", "1999-08-15T00:19:06.999999Z", "1999-08-15T00:19:07.000001Z", True), ("1999-08-15T00:19:07.000Z", "1999-08-15T00:19:07.000001Z", "1999-08-15T00:19:07.000001Z", True), ("1999-08-15T00:19:07.999Z", "1999-08-15T00:19:07.999999Z", "1999-08-15T00:19:07.999999Z", True), ], ) def test_fudge_modified(old, candidate_new, expected_new, use_stix21): old_dt = datetime.datetime.strptime(old, "%Y-%m-%dT%H:%M:%S.%fZ") candidate_new_dt = datetime.datetime.strptime( candidate_new, "%Y-%m-%dT%H:%M:%S.%fZ", ) expected_new_dt = datetime.datetime.strptime( expected_new, "%Y-%m-%dT%H:%M:%S.%fZ", ) fudged = stix2.versioning._fudge_modified( old_dt, candidate_new_dt, use_stix21, ) assert fudged == expected_new_dt def test_version_unversionable_dict(): f = { "type": "file", "id": "file--4efb5217-e987-4438-9a1b-c800099401df", "name": "data.txt", } with pytest.raises(ValueError): stix2.versioning.new_version(f) def test_version_sco_with_custom(): """ If we add custom properties named like versioning properties to an object type which is otherwise unversionable, versioning should start working. """ file_sco_obj = stix2.v21.File( name="data.txt", created="1973-11-23T02:31:37Z", modified="1991-05-13T19:24:57Z", revoked=False, allow_custom=True, ) new_file_sco_obj = stix2.versioning.new_version( file_sco_obj, size=1234, ) assert new_file_sco_obj.size == 1234 revoked_obj = stix2.versioning.revoke(new_file_sco_obj) assert revoked_obj.revoked def test_version_disable_custom(): m = stix2.v21.Malware( name="foo", description="Steals your identity!", is_family=False, x_custom=123, allow_custom=True, ) # Remove the custom property, and disallow custom properties in the # resulting object. m2 = stix2.versioning.new_version(m, x_custom=None, allow_custom=False) assert "x_custom" not in m2 # Remove a regular property and leave the custom one, disallow custom # properties, and make sure we get an error. with pytest.raises(stix2.exceptions.ExtraPropertiesError): stix2.versioning.new_version(m, description=None, allow_custom=False) def test_version_enable_custom(): m = stix2.v21.Malware( name="foo", description="Steals your identity!", is_family=False, ) # Add a custom property to an object for which it was previously disallowed m2 = stix2.versioning.new_version(m, x_custom=123, allow_custom=True) assert "x_custom" in m2 # Add a custom property without enabling it, make sure we get an error with pytest.raises(stix2.exceptions.ExtraPropertiesError): stix2.versioning.new_version(m, x_custom=123, allow_custom=False) def test_version_propagate_custom(): m = stix2.v21.Malware( name="foo", is_family=False, ) # Remember custom-not-allowed setting from original; produce error with pytest.raises(stix2.exceptions.ExtraPropertiesError): stix2.versioning.new_version(m, x_custom=123) m2 = stix2.versioning.new_version(m, description="Steals your identity!") assert "description" in m2 assert m2.description == "Steals your identity!" m_custom = stix2.v21.Malware( name="foo", is_family=False, x_custom=123, allow_custom=True, ) # Remember custom-allowed setting from original; should work m2_custom = stix2.versioning.new_version(m_custom, x_other_custom="abc") assert "x_other_custom" in m2_custom assert m2_custom.x_other_custom == "abc"