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cti-python-stix2
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create a new exception for TLP validation and util method

master
Emmanuelle Vargas-Gonzalez 2019-05-03 10:03:15 -04:00
parent 46c47a0d08
commit d6497f66fe
2 changed files with 51 additions and 22 deletions
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13
stix2/exceptions.py
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@ -203,3 +203,16 @@ class MarkingNotFoundError(STIXError, AssertionError):
def __str__(self):
msg = "Marking {0} was not found in {1}!"
return msg.format(self.key, self.cls.__class__.__name__)
class TLPMarkingDefinitionError(STIXError, AssertionError):
"""Marking violation. The marking-definition for TLP MUST follow the mandated instances from the spec."""
def __init__(self, user_obj, spec_obj):
super(TLPMarkingDefinitionError, self).__init__()
self.user_obj = user_obj
self.spec_obj = spec_obj
def __str__(self):
msg = "Marking {0} does not match spec marking {1}!"
return msg.format(self.user_obj, self.spec_obj)

60
stix2/utils.py
View File

@ -11,7 +11,8 @@ import pytz
import stix2.base
from .exceptions import (
InvalidValueError, RevokeError, TLPMarkingDefinitionError, UnmodifiablePropertyError,
InvalidValueError, RevokeError, TLPMarkingDefinitionError,
UnmodifiablePropertyError,
)
# Sentinel value for properties that should be set to the current time.
@ -414,12 +415,16 @@ def check_tlp_marking(marking_obj, spec_version):
if color == "white":
if spec_version == '2.0':
w = ('{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "white"}, "definition_type": "tlp",'
' "id": "marking-definition--613f2e26-407d-48c7-9eca-b8e91df99dc9", "type": "marking-definition"}')
w = (
'{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "white"}, "definition_type": "tlp",'
' "id": "marking-definition--613f2e26-407d-48c7-9eca-b8e91df99dc9", "type": "marking-definition"}'
)
else:
w = ('{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "white"}, "definition_type": "tlp",'
' "id": "marking-definition--613f2e26-407d-48c7-9eca-b8e91df99dc9", "type": "marking-definition",'
' "spec_version": "2.1"}')
w = (
'{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "white"}, "definition_type": "tlp",'
' "id": "marking-definition--613f2e26-407d-48c7-9eca-b8e91df99dc9", "type": "marking-definition",'
' "spec_version": "2.1"}'
)
if marking_obj["id"] != "marking-definition--613f2e26-407d-48c7-9eca-b8e91df99dc9":
raise TLPMarkingDefinitionError(marking_obj["id"], w)
elif format_datetime(marking_obj["created"]) != "2017-01-20T00:00:00.000Z":
@ -427,12 +432,16 @@ def check_tlp_marking(marking_obj, spec_version):
elif color == "green":
if spec_version == '2.0':
g = ('{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "green"}, "definition_type": "tlp",'
' "id": "marking-definition--34098fce-860f-48ae-8e50-ebd3cc5e41da", "type": "marking-definition"}')
g = (
'{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "green"}, "definition_type": "tlp",'
' "id": "marking-definition--34098fce-860f-48ae-8e50-ebd3cc5e41da", "type": "marking-definition"}'
)
else:
g = ('{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "green"}, "definition_type": "tlp",'
' "id": "marking-definition--34098fce-860f-48ae-8e50-ebd3cc5e41da", "type": "marking-definition",'
' "spec_version": "2.1"}')
g = (
'{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "green"}, "definition_type": "tlp",'
' "id": "marking-definition--34098fce-860f-48ae-8e50-ebd3cc5e41da", "type": "marking-definition",'
' "spec_version": "2.1"}'
)
if marking_obj["id"] != "marking-definition--34098fce-860f-48ae-8e50-ebd3cc5e41da":
raise TLPMarkingDefinitionError(marking_obj["id"], g)
elif format_datetime(marking_obj["created"]) != "2017-01-20T00:00:00.000Z":
@ -440,12 +449,16 @@ def check_tlp_marking(marking_obj, spec_version):
elif color == "amber":
if spec_version == '2.0':
a = ('{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "amber"}, "definition_type": "tlp",'
' "id": "marking-definition--f88d31f6-486f-44da-b317-01333bde0b82", "type": "marking-definition"}')
a = (
'{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "amber"}, "definition_type": "tlp",'
' "id": "marking-definition--f88d31f6-486f-44da-b317-01333bde0b82", "type": "marking-definition"}'
)
else:
a = ('{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "amber"}, "definition_type": "tlp",'
' "id": "marking-definition--f88d31f6-486f-44da-b317-01333bde0b82", "type": "marking-definition",'
' "spec_version": "2.1"}')
a = (
'{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "amber"}, "definition_type": "tlp",'
' "id": "marking-definition--f88d31f6-486f-44da-b317-01333bde0b82", "type": "marking-definition",'
' "spec_version": "2.1"}'
)
if marking_obj["id"] != "marking-definition--f88d31f6-486f-44da-b317-01333bde0b82":
raise TLPMarkingDefinitionError(marking_obj["id"], a)
elif format_datetime(marking_obj["created"]) != "2017-01-20T00:00:00.000Z":
@ -453,12 +466,16 @@ def check_tlp_marking(marking_obj, spec_version):
elif color == "red":
if spec_version == '2.0':
r = ('{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "red"}, "definition_type": "tlp",'
' "id": "marking-definition--5e57c739-391a-4eb3-b6be-7d15ca92d5ed", "type": "marking-definition"}')
r = (
'{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "red"}, "definition_type": "tlp",'
' "id": "marking-definition--5e57c739-391a-4eb3-b6be-7d15ca92d5ed", "type": "marking-definition"}'
)
else:
r = ('{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "red"}, "definition_type": "tlp",'
' "id": "marking-definition--5e57c739-391a-4eb3-b6be-7d15ca92d5ed", "type": "marking-definition",'
' "spec_version": "2.1"}')
r = (
'{"created": "2017-01-20T00:00:00.000Z", "definition": {"tlp": "red"}, "definition_type": "tlp",'
' "id": "marking-definition--5e57c739-391a-4eb3-b6be-7d15ca92d5ed", "type": "marking-definition",'
' "spec_version": "2.1"}'
)
if marking_obj["id"] != "marking-definition--5e57c739-391a-4eb3-b6be-7d15ca92d5ed":
raise TLPMarkingDefinitionError(marking_obj["id"], r)
elif format_datetime(marking_obj["created"]) != "2017-01-20T00:00:00.000Z":
@ -466,4 +483,3 @@ def check_tlp_marking(marking_obj, spec_version):
else:
raise TLPMarkingDefinitionError(marking_obj["id"], "Does not match any TLP Marking definition")