cti-python-stix2/stix2/test/test_filesystem.py

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import json
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import os
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import shutil
import pytest
from stix2 import (Bundle, Campaign, CustomObject, FileSystemSink,
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FileSystemSource, FileSystemStore, Filter, Identity,
Indicator, Malware, Relationship, properties)
from .constants import (CAMPAIGN_ID, CAMPAIGN_KWARGS, IDENTITY_ID,
IDENTITY_KWARGS, INDICATOR_ID, INDICATOR_KWARGS,
MALWARE_ID, MALWARE_KWARGS, RELATIONSHIP_IDS)
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FS_PATH = os.path.join(os.path.dirname(os.path.realpath(__file__)), "stix2_data")
@pytest.fixture
def fs_store():
# create
yield FileSystemStore(FS_PATH)
# remove campaign dir
shutil.rmtree(os.path.join(FS_PATH, "campaign"), True)
@pytest.fixture
def fs_source():
# create
fs = FileSystemSource(FS_PATH)
assert fs.stix_dir == FS_PATH
yield fs
# remove campaign dir
shutil.rmtree(os.path.join(FS_PATH, "campaign"), True)
@pytest.fixture
def fs_sink():
# create
fs = FileSystemSink(FS_PATH)
assert fs.stix_dir == FS_PATH
yield fs
# remove campaign dir
shutil.rmtree(os.path.join(FS_PATH, "campaign"), True)
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@pytest.fixture
def bad_json_files():
# create erroneous JSON files for tests to make sure handled gracefully
with open(os.path.join(FS_PATH, "intrusion-set", "intrusion-set--test-non-json.txt"), "w+") as f:
f.write("Im not a JSON file")
with open(os.path.join(FS_PATH, "intrusion-set", "intrusion-set--test-bad-json.json"), "w+") as f:
f.write("Im not a JSON formatted file")
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yield True # dummy yield so can have teardown
os.remove(os.path.join(FS_PATH, "intrusion-set", "intrusion-set--test-non-json.txt"))
os.remove(os.path.join(FS_PATH, "intrusion-set", "intrusion-set--test-bad-json.json"))
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@pytest.fixture
def bad_stix_files():
# create erroneous STIX JSON files for tests to make sure handled correctly
# bad STIX object
stix_obj = {
"id": "intrusion-set--test-bad-stix",
"spec_version": "2.0"
# no "type" field
}
with open(os.path.join(FS_PATH, "intrusion-set", "intrusion-set--test-non-stix.json"), "w+") as f:
f.write(json.dumps(stix_obj))
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yield True # dummy yield so can have teardown
os.remove(os.path.join(FS_PATH, "intrusion-set", "intrusion-set--test-non-stix.json"))
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@pytest.fixture(scope='module')
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def rel_fs_store():
cam = Campaign(id=CAMPAIGN_ID, **CAMPAIGN_KWARGS)
idy = Identity(id=IDENTITY_ID, **IDENTITY_KWARGS)
ind = Indicator(id=INDICATOR_ID, **INDICATOR_KWARGS)
mal = Malware(id=MALWARE_ID, **MALWARE_KWARGS)
rel1 = Relationship(ind, 'indicates', mal, id=RELATIONSHIP_IDS[0])
rel2 = Relationship(mal, 'targets', idy, id=RELATIONSHIP_IDS[1])
rel3 = Relationship(cam, 'uses', mal, id=RELATIONSHIP_IDS[2])
stix_objs = [cam, idy, ind, mal, rel1, rel2, rel3]
fs = FileSystemStore(FS_PATH)
for o in stix_objs:
fs.add(o)
yield fs
for o in stix_objs:
os.remove(os.path.join(FS_PATH, o.type, o.id + '.json'))
def test_filesystem_source_nonexistent_folder():
with pytest.raises(ValueError) as excinfo:
FileSystemSource('nonexistent-folder')
assert "for STIX data does not exist" in str(excinfo)
def test_filesystem_sink_nonexistent_folder():
with pytest.raises(ValueError) as excinfo:
FileSystemSink('nonexistent-folder')
assert "for STIX data does not exist" in str(excinfo)
def test_filesystem_source_bad_json_file(fs_source, bad_json_files):
# this tests the handling of two bad json files
# - one file should just be skipped (silently) as its a ".txt" extension
# - one file should be parsed and raise Exception bc its not JSON
try:
fs_source.get("intrusion-set--test-bad-json")
except TypeError as e:
assert "intrusion-set--test-bad-json" in str(e)
assert "could either not be parsed to JSON or was not valid STIX JSON" in str(e)
def test_filesystem_source_bad_stix_file(fs_source, bad_stix_files):
# this tests handling of bad STIX json object
try:
fs_source.get("intrusion-set--test-non-stix")
except TypeError as e:
assert "intrusion-set--test-non-stix" in str(e)
assert "could either not be parsed to JSON or was not valid STIX JSON" in str(e)
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def test_filesytem_source_get_object(fs_source):
# get object
mal = fs_source.get("malware--6b616fc1-1505-48e3-8b2c-0d19337bff38")
assert mal.id == "malware--6b616fc1-1505-48e3-8b2c-0d19337bff38"
assert mal.name == "Rover"
def test_filesytem_source_get_nonexistent_object(fs_source):
ind = fs_source.get("indicator--6b616fc1-1505-48e3-8b2c-0d19337bff38")
assert ind is None
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def test_filesytem_source_all_versions(fs_source):
# all versions - (currently not a true all versions call as FileSystem cant have multiple versions)
id_ = fs_source.get("identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5")
assert id_.id == "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5"
assert id_.name == "The MITRE Corporation"
assert id_.type == "identity"
def test_filesytem_source_query_single(fs_source):
# query2
is_2 = fs_source.query([Filter("external_references.external_id", '=', "T1027")])
assert len(is_2) == 1
is_2 = is_2[0]
assert is_2.id == "attack-pattern--b3d682b6-98f2-4fb0-aa3b-b4df007ca70a"
assert is_2.type == "attack-pattern"
def test_filesytem_source_query_multiple(fs_source):
# query
intrusion_sets = fs_source.query([Filter("type", '=', "intrusion-set")])
assert len(intrusion_sets) == 2
assert "intrusion-set--a653431d-6a5e-4600-8ad3-609b5af57064" in [is_.id for is_ in intrusion_sets]
assert "intrusion-set--f3bdec95-3d62-42d9-a840-29630f6cdc1a" in [is_.id for is_ in intrusion_sets]
is_1 = [is_ for is_ in intrusion_sets if is_.id == "intrusion-set--f3bdec95-3d62-42d9-a840-29630f6cdc1a"][0]
assert "DragonOK" in is_1.aliases
assert len(is_1.external_references) == 4
def test_filesystem_sink_add_python_stix_object(fs_sink, fs_source):
# add python stix object
camp1 = Campaign(name="Hannibal",
objective="Targeting Italian and Spanish Diplomat internet accounts",
aliases=["War Elephant"])
fs_sink.add(camp1)
assert os.path.exists(os.path.join(FS_PATH, "campaign", camp1.id + ".json"))
camp1_r = fs_source.get(camp1.id)
assert camp1_r.id == camp1.id
assert camp1_r.name == "Hannibal"
assert "War Elephant" in camp1_r.aliases
os.remove(os.path.join(FS_PATH, "campaign", camp1_r.id + ".json"))
def test_filesystem_sink_add_stix_object_dict(fs_sink, fs_source):
# add stix object dict
camp2 = {
"name": "Aurelius",
"type": "campaign",
"objective": "German and French Intelligence Services",
"aliases": ["Purple Robes"],
"id": "campaign--111111b6-1112-4fb0-111b-b111107ca70a",
"created": "2017-05-31T21:31:53.197755Z"
}
fs_sink.add(camp2)
assert os.path.exists(os.path.join(FS_PATH, "campaign", camp2["id"] + ".json"))
camp2_r = fs_source.get(camp2["id"])
assert camp2_r.id == camp2["id"]
assert camp2_r.name == camp2["name"]
assert "Purple Robes" in camp2_r.aliases
os.remove(os.path.join(FS_PATH, "campaign", camp2_r.id + ".json"))
def test_filesystem_sink_add_stix_bundle_dict(fs_sink, fs_source):
# add stix bundle dict
bund = {
"type": "bundle",
"id": "bundle--112211b6-1112-4fb0-111b-b111107ca70a",
"spec_version": "2.0",
"objects": [
{
"name": "Atilla",
"type": "campaign",
"objective": "Bulgarian, Albanian and Romanian Intelligence Services",
"aliases": ["Huns"],
"id": "campaign--133111b6-1112-4fb0-111b-b111107ca70a",
"created": "2017-05-31T21:31:53.197755Z"
}
]
}
fs_sink.add(bund)
assert os.path.exists(os.path.join(FS_PATH, "campaign", bund["objects"][0]["id"] + ".json"))
camp3_r = fs_source.get(bund["objects"][0]["id"])
assert camp3_r.id == bund["objects"][0]["id"]
assert camp3_r.name == bund["objects"][0]["name"]
assert "Huns" in camp3_r.aliases
os.remove(os.path.join(FS_PATH, "campaign", camp3_r.id + ".json"))
def test_filesystem_sink_add_json_stix_object(fs_sink, fs_source):
# add json-encoded stix obj
camp4 = '{"type": "campaign", "id":"campaign--144111b6-1112-4fb0-111b-b111107ca70a",'\
' "created":"2017-05-31T21:31:53.197755Z", "name": "Ghengis Khan", "objective": "China and Russian infrastructure"}'
fs_sink.add(camp4)
assert os.path.exists(os.path.join(FS_PATH, "campaign", "campaign--144111b6-1112-4fb0-111b-b111107ca70a" + ".json"))
camp4_r = fs_source.get("campaign--144111b6-1112-4fb0-111b-b111107ca70a")
assert camp4_r.id == "campaign--144111b6-1112-4fb0-111b-b111107ca70a"
assert camp4_r.name == "Ghengis Khan"
os.remove(os.path.join(FS_PATH, "campaign", camp4_r.id + ".json"))
def test_filesystem_sink_json_stix_bundle(fs_sink, fs_source):
# add json-encoded stix bundle
bund2 = '{"type": "bundle", "id": "bundle--332211b6-1132-4fb0-111b-b111107ca70a",' \
' "spec_version": "2.0", "objects": [{"type": "campaign", "id": "campaign--155155b6-1112-4fb0-111b-b111107ca70a",' \
' "created":"2017-05-31T21:31:53.197755Z", "name": "Spartacus", "objective": "Oppressive regimes of Africa and Middle East"}]}'
fs_sink.add(bund2)
assert os.path.exists(os.path.join(FS_PATH, "campaign", "campaign--155155b6-1112-4fb0-111b-b111107ca70a" + ".json"))
camp5_r = fs_source.get("campaign--155155b6-1112-4fb0-111b-b111107ca70a")
assert camp5_r.id == "campaign--155155b6-1112-4fb0-111b-b111107ca70a"
assert camp5_r.name == "Spartacus"
os.remove(os.path.join(FS_PATH, "campaign", camp5_r.id + ".json"))
def test_filesystem_sink_add_objects_list(fs_sink, fs_source):
# add list of objects
camp6 = Campaign(name="Comanche",
objective="US Midwest manufacturing firms, oil refineries, and businesses",
aliases=["Horse Warrior"])
camp7 = {
"name": "Napolean",
"type": "campaign",
"objective": "Central and Eastern Europe military commands and departments",
"aliases": ["The Frenchmen"],
"id": "campaign--122818b6-1112-4fb0-111b-b111107ca70a",
"created": "2017-05-31T21:31:53.197755Z"
}
fs_sink.add([camp6, camp7])
assert os.path.exists(os.path.join(FS_PATH, "campaign", camp6.id + ".json"))
assert os.path.exists(os.path.join(FS_PATH, "campaign", "campaign--122818b6-1112-4fb0-111b-b111107ca70a" + ".json"))
camp6_r = fs_source.get(camp6.id)
assert camp6_r.id == camp6.id
assert "Horse Warrior" in camp6_r.aliases
camp7_r = fs_source.get(camp7["id"])
assert camp7_r.id == camp7["id"]
assert "The Frenchmen" in camp7_r.aliases
# remove all added objects
os.remove(os.path.join(FS_PATH, "campaign", camp6_r.id + ".json"))
os.remove(os.path.join(FS_PATH, "campaign", camp7_r.id + ".json"))
def test_filesystem_store_get_stored_as_bundle(fs_store):
coa = fs_store.get("course-of-action--95ddb356-7ba0-4bd9-a889-247262b8946f")
assert coa.id == "course-of-action--95ddb356-7ba0-4bd9-a889-247262b8946f"
assert coa.type == "course-of-action"
def test_filesystem_store_get_stored_as_object(fs_store):
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coa = fs_store.get("course-of-action--d9727aee-48b8-4fdb-89e2-4c49746ba4dd")
assert coa.id == "course-of-action--d9727aee-48b8-4fdb-89e2-4c49746ba4dd"
assert coa.type == "course-of-action"
def test_filesystem_store_all_versions(fs_store):
# all versions() - (note at this time, all_versions() is still not applicable to FileSystem, as only one version is ever stored)
rel = fs_store.all_versions("relationship--70dc6b5c-c524-429e-a6ab-0dd40f0482c1")[0]
assert rel.id == "relationship--70dc6b5c-c524-429e-a6ab-0dd40f0482c1"
assert rel.type == "relationship"
def test_filesystem_store_query(fs_store):
# query()
tools = fs_store.query([Filter("labels", "in", "tool")])
assert len(tools) == 2
assert "tool--242f3da3-4425-4d11-8f5c-b842886da966" in [tool.id for tool in tools]
assert "tool--03342581-f790-4f03-ba41-e82e67392e23" in [tool.id for tool in tools]
def test_filesystem_store_query_single_filter(fs_store):
query = Filter("labels", "in", "tool")
tools = fs_store.query(query)
assert len(tools) == 2
assert "tool--242f3da3-4425-4d11-8f5c-b842886da966" in [tool.id for tool in tools]
assert "tool--03342581-f790-4f03-ba41-e82e67392e23" in [tool.id for tool in tools]
def test_filesystem_store_empty_query(fs_store):
results = fs_store.query() # returns all
assert len(results) == 26
assert "tool--242f3da3-4425-4d11-8f5c-b842886da966" in [obj.id for obj in results]
assert "marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168" in [obj.id for obj in results]
def test_filesystem_store_query_multiple_filters(fs_store):
fs_store.source.filters.add(Filter("labels", "in", "tool"))
tools = fs_store.query(Filter("id", "=", "tool--242f3da3-4425-4d11-8f5c-b842886da966"))
assert len(tools) == 1
assert tools[0].id == "tool--242f3da3-4425-4d11-8f5c-b842886da966"
def test_filesystem_store_query_dont_include_type_folder(fs_store):
results = fs_store.query(Filter("type", "!=", "tool"))
assert len(results) == 24
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def test_filesystem_store_add(fs_store):
# add()
camp1 = Campaign(name="Great Heathen Army",
objective="Targeting the government of United Kingdom and insitutions affiliated with the Church Of England",
aliases=["Ragnar"])
fs_store.add(camp1)
camp1_r = fs_store.get(camp1.id)
assert camp1_r.id == camp1.id
assert camp1_r.name == camp1.name
# remove
os.remove(os.path.join(FS_PATH, "campaign", camp1_r.id + ".json"))
def test_filesystem_store_add_as_bundle():
fs_store = FileSystemStore(FS_PATH, bundlify=True)
camp1 = Campaign(name="Great Heathen Army",
objective="Targeting the government of United Kingdom and insitutions affiliated with the Church Of England",
aliases=["Ragnar"])
fs_store.add(camp1)
with open(os.path.join(FS_PATH, "campaign", camp1.id + ".json")) as bundle_file:
assert '"type": "bundle"' in bundle_file.read()
camp1_r = fs_store.get(camp1.id)
assert camp1_r.id == camp1.id
assert camp1_r.name == camp1.name
shutil.rmtree(os.path.join(FS_PATH, "campaign"), True)
def test_filesystem_add_bundle_object(fs_store):
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bundle = Bundle()
fs_store.add(bundle)
def test_filesystem_store_add_invalid_object(fs_store):
ind = ('campaign', 'campaign--111111b6-1112-4fb0-111b-b111107ca70a') # tuple isn't valid
with pytest.raises(TypeError) as excinfo:
fs_store.add(ind)
assert 'stix_data must be' in str(excinfo.value)
assert 'a STIX object' in str(excinfo.value)
assert 'JSON formatted STIX' in str(excinfo.value)
assert 'JSON formatted STIX bundle' in str(excinfo.value)
def test_filesystem_object_with_custom_property(fs_store):
camp = Campaign(name="Scipio Africanus",
objective="Defeat the Carthaginians",
x_empire="Roman",
allow_custom=True)
fs_store.add(camp, True)
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camp_r = fs_store.get(camp.id)
assert camp_r.id == camp.id
assert camp_r.x_empire == camp.x_empire
def test_filesystem_object_with_custom_property_in_bundle(fs_store):
camp = Campaign(name="Scipio Africanus",
objective="Defeat the Carthaginians",
x_empire="Roman",
allow_custom=True)
bundle = Bundle(camp, allow_custom=True)
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fs_store.add(bundle)
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camp_r = fs_store.get(camp.id)
assert camp_r.id == camp.id
assert camp_r.x_empire == camp.x_empire
def test_filesystem_custom_object(fs_store):
@CustomObject('x-new-obj', [
('property1', properties.StringProperty(required=True)),
])
class NewObj():
pass
newobj = NewObj(property1='something')
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fs_store.add(newobj)
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newobj_r = fs_store.get(newobj.id)
assert newobj_r.id == newobj.id
assert newobj_r.property1 == 'something'
# remove dir
shutil.rmtree(os.path.join(FS_PATH, "x-new-obj"), True)
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def test_relationships(rel_fs_store):
mal = rel_fs_store.get(MALWARE_ID)
resp = rel_fs_store.relationships(mal)
assert len(resp) == 3
assert any(x['id'] == RELATIONSHIP_IDS[0] for x in resp)
assert any(x['id'] == RELATIONSHIP_IDS[1] for x in resp)
assert any(x['id'] == RELATIONSHIP_IDS[2] for x in resp)
def test_relationships_by_type(rel_fs_store):
mal = rel_fs_store.get(MALWARE_ID)
resp = rel_fs_store.relationships(mal, relationship_type='indicates')
assert len(resp) == 1
assert resp[0]['id'] == RELATIONSHIP_IDS[0]
def test_relationships_by_source(rel_fs_store):
resp = rel_fs_store.relationships(MALWARE_ID, source_only=True)
assert len(resp) == 1
assert resp[0]['id'] == RELATIONSHIP_IDS[1]
def test_relationships_by_target(rel_fs_store):
resp = rel_fs_store.relationships(MALWARE_ID, target_only=True)
assert len(resp) == 2
assert any(x['id'] == RELATIONSHIP_IDS[0] for x in resp)
assert any(x['id'] == RELATIONSHIP_IDS[2] for x in resp)
def test_relationships_by_target_and_type(rel_fs_store):
resp = rel_fs_store.relationships(MALWARE_ID, relationship_type='uses', target_only=True)
assert len(resp) == 1
assert any(x['id'] == RELATIONSHIP_IDS[2] for x in resp)
def test_relationships_by_target_and_source(rel_fs_store):
with pytest.raises(ValueError) as excinfo:
rel_fs_store.relationships(MALWARE_ID, target_only=True, source_only=True)
assert 'not both' in str(excinfo.value)
def test_related_to(rel_fs_store):
mal = rel_fs_store.get(MALWARE_ID)
resp = rel_fs_store.related_to(mal)
assert len(resp) == 3
assert any(x['id'] == CAMPAIGN_ID for x in resp)
assert any(x['id'] == INDICATOR_ID for x in resp)
assert any(x['id'] == IDENTITY_ID for x in resp)
def test_related_to_by_source(rel_fs_store):
resp = rel_fs_store.related_to(MALWARE_ID, source_only=True)
assert len(resp) == 1
assert any(x['id'] == IDENTITY_ID for x in resp)
def test_related_to_by_target(rel_fs_store):
resp = rel_fs_store.related_to(MALWARE_ID, target_only=True)
assert len(resp) == 2
assert any(x['id'] == CAMPAIGN_ID for x in resp)
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assert any(x['id'] == INDICATOR_ID for x in resp)