542 lines
18 KiB
Python
542 lines
18 KiB
Python
import json
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import os
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import shutil
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import pytest
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import stix2
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from stix2.test.v21.constants import (
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CAMPAIGN_ID, CAMPAIGN_KWARGS, IDENTITY_ID, IDENTITY_KWARGS, INDICATOR_ID,
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INDICATOR_KWARGS, MALWARE_ID, MALWARE_KWARGS, RELATIONSHIP_IDS,
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)
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FS_PATH = os.path.join(os.path.dirname(os.path.realpath(__file__)), "stix2_data")
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@pytest.fixture
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def fs_store():
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# create
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yield stix2.FileSystemStore(FS_PATH)
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# remove campaign dir
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shutil.rmtree(os.path.join(FS_PATH, "campaign"), True)
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@pytest.fixture
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def fs_source():
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# create
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fs = stix2.FileSystemSource(FS_PATH)
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assert fs.stix_dir == FS_PATH
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yield fs
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# remove campaign dir
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shutil.rmtree(os.path.join(FS_PATH, "campaign"), True)
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@pytest.fixture
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def fs_sink():
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# create
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fs = stix2.FileSystemSink(FS_PATH)
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assert fs.stix_dir == FS_PATH
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yield fs
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# remove campaign dir
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shutil.rmtree(os.path.join(FS_PATH, "campaign"), True)
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@pytest.fixture
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def bad_json_files():
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# create erroneous JSON files for tests to make sure handled gracefully
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with open(os.path.join(FS_PATH, "intrusion-set", "intrusion-set--test-non-json.txt"), "w+") as f:
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f.write("Im not a JSON file")
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with open(os.path.join(FS_PATH, "intrusion-set", "intrusion-set--test-bad-json.json"), "w+") as f:
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f.write("Im not a JSON formatted file")
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yield True # dummy yield so can have teardown
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os.remove(os.path.join(FS_PATH, "intrusion-set", "intrusion-set--test-non-json.txt"))
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os.remove(os.path.join(FS_PATH, "intrusion-set", "intrusion-set--test-bad-json.json"))
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@pytest.fixture
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def bad_stix_files():
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# create erroneous STIX JSON files for tests to make sure handled correctly
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# bad STIX object
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stix_obj = {
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"id": "intrusion-set--test-bad-stix",
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"spec_version": "2.0",
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# no "type" field
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}
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with open(os.path.join(FS_PATH, "intrusion-set", "intrusion-set--test-non-stix.json"), "w+") as f:
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f.write(json.dumps(stix_obj))
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yield True # dummy yield so can have teardown
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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():
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cam = stix2.v21.Campaign(id=CAMPAIGN_ID, **CAMPAIGN_KWARGS)
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idy = stix2.v21.Identity(id=IDENTITY_ID, **IDENTITY_KWARGS)
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ind = stix2.v21.Indicator(id=INDICATOR_ID, **INDICATOR_KWARGS)
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mal = stix2.v21.Malware(id=MALWARE_ID, **MALWARE_KWARGS)
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rel1 = stix2.v21.Relationship(ind, 'indicates', mal, id=RELATIONSHIP_IDS[0])
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rel2 = stix2.v21.Relationship(mal, 'targets', idy, id=RELATIONSHIP_IDS[1])
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rel3 = stix2.v21.Relationship(cam, 'uses', mal, id=RELATIONSHIP_IDS[2])
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stix_objs = [cam, idy, ind, mal, rel1, rel2, rel3]
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fs = stix2.FileSystemStore(FS_PATH)
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for o in stix_objs:
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fs.add(o)
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yield fs
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for o in stix_objs:
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os.remove(os.path.join(FS_PATH, o.type, o.id + '.json'))
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def test_filesystem_source_nonexistent_folder():
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with pytest.raises(ValueError) as excinfo:
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stix2.FileSystemSource('nonexistent-folder')
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assert "for STIX data does not exist" in str(excinfo)
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def test_filesystem_sink_nonexistent_folder():
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with pytest.raises(ValueError) as excinfo:
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stix2.FileSystemSink('nonexistent-folder')
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assert "for STIX data does not exist" in str(excinfo)
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def test_filesystem_source_bad_json_file(fs_source, bad_json_files):
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# this tests the handling of two bad json files
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# - one file should just be skipped (silently) as its a ".txt" extension
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# - one file should be parsed and raise Exception bc its not JSON
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try:
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fs_source.get("intrusion-set--test-bad-json")
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except TypeError as e:
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assert "intrusion-set--test-bad-json" in str(e)
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assert "could either not be parsed to JSON or was not valid STIX JSON" in str(e)
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def test_filesystem_source_bad_stix_file(fs_source, bad_stix_files):
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# this tests handling of bad STIX json object
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try:
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fs_source.get("intrusion-set--test-non-stix")
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except TypeError as e:
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assert "intrusion-set--test-non-stix" in str(e)
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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):
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# get object
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mal = fs_source.get("malware--6b616fc1-1505-48e3-8b2c-0d19337bff38")
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assert mal.id == "malware--6b616fc1-1505-48e3-8b2c-0d19337bff38"
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assert mal.name == "Rover"
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def test_filesytem_source_get_nonexistent_object(fs_source):
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ind = fs_source.get("indicator--6b616fc1-1505-48e3-8b2c-0d19337bff38")
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assert ind is None
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def test_filesytem_source_all_versions(fs_source):
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# all versions - (currently not a true all versions call as FileSystem cant have multiple versions)
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id_ = fs_source.get("identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5")
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assert id_.id == "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5"
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assert id_.name == "The MITRE Corporation"
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assert id_.type == "identity"
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def test_filesytem_source_query_single(fs_source):
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# query2
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is_2 = fs_source.query([stix2.Filter("external_references.external_id", '=', "T1027")])
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assert len(is_2) == 1
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is_2 = is_2[0]
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assert is_2.id == "attack-pattern--b3d682b6-98f2-4fb0-aa3b-b4df007ca70a"
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assert is_2.type == "attack-pattern"
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def test_filesytem_source_query_multiple(fs_source):
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# query
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intrusion_sets = fs_source.query([stix2.Filter("type", '=', "intrusion-set")])
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assert len(intrusion_sets) == 2
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assert "intrusion-set--a653431d-6a5e-4600-8ad3-609b5af57064" in [is_.id for is_ in intrusion_sets]
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assert "intrusion-set--f3bdec95-3d62-42d9-a840-29630f6cdc1a" in [is_.id for is_ in intrusion_sets]
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is_1 = [is_ for is_ in intrusion_sets if is_.id == "intrusion-set--f3bdec95-3d62-42d9-a840-29630f6cdc1a"][0]
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assert "DragonOK" in is_1.aliases
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assert len(is_1.external_references) == 4
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def test_filesystem_sink_add_python_stix_object(fs_sink, fs_source):
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# add python stix object
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camp1 = stix2.v21.Campaign(
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name="Hannibal",
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objective="Targeting Italian and Spanish Diplomat internet accounts",
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aliases=["War Elephant"],
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)
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fs_sink.add(camp1)
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assert os.path.exists(os.path.join(FS_PATH, "campaign", camp1.id + ".json"))
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camp1_r = fs_source.get(camp1.id)
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assert camp1_r.id == camp1.id
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assert camp1_r.name == "Hannibal"
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assert "War Elephant" in camp1_r.aliases
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os.remove(os.path.join(FS_PATH, "campaign", camp1_r.id + ".json"))
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def test_filesystem_sink_add_stix_object_dict(fs_sink, fs_source):
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# add stix object dict
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camp2 = {
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"name": "Aurelius",
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"type": "campaign",
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"objective": "German and French Intelligence Services",
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"aliases": ["Purple Robes"],
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"id": "campaign--8e2e2d2b-17d4-4cbf-938f-98ee46b3cd3f",
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"created": "2017-05-31T21:31:53.197755Z",
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}
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fs_sink.add(camp2)
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assert os.path.exists(os.path.join(FS_PATH, "campaign", camp2["id"] + ".json"))
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camp2_r = fs_source.get(camp2["id"])
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assert camp2_r.id == camp2["id"]
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assert camp2_r.name == camp2["name"]
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assert "Purple Robes" in camp2_r.aliases
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os.remove(os.path.join(FS_PATH, "campaign", camp2_r.id + ".json"))
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def test_filesystem_sink_add_stix_bundle_dict(fs_sink, fs_source):
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# add stix bundle dict
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bund = {
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"type": "bundle",
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"id": "bundle--040ae5ec-2e91-4e94-b075-bc8b368e8ca3",
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"objects": [
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{
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"name": "Atilla",
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"type": "campaign",
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"objective": "Bulgarian, Albanian and Romanian Intelligence Services",
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"aliases": ["Huns"],
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"id": "campaign--b8f86161-ccae-49de-973a-4ca320c62478",
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"created": "2017-05-31T21:31:53.197755Z",
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},
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],
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}
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fs_sink.add(bund)
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assert os.path.exists(os.path.join(FS_PATH, "campaign", bund["objects"][0]["id"] + ".json"))
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camp3_r = fs_source.get(bund["objects"][0]["id"])
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assert camp3_r.id == bund["objects"][0]["id"]
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assert camp3_r.name == bund["objects"][0]["name"]
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assert "Huns" in camp3_r.aliases
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os.remove(os.path.join(FS_PATH, "campaign", camp3_r.id + ".json"))
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def test_filesystem_sink_add_json_stix_object(fs_sink, fs_source):
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# add json-encoded stix obj
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camp4 = '{"type": "campaign", "id":"campaign--6a6ca372-ba07-42cc-81ef-9840fc1f963d",'\
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' "created":"2017-05-31T21:31:53.197755Z", "name": "Ghengis Khan", "objective": "China and Russian infrastructure"}'
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fs_sink.add(camp4)
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assert os.path.exists(os.path.join(FS_PATH, "campaign", "campaign--6a6ca372-ba07-42cc-81ef-9840fc1f963d" + ".json"))
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camp4_r = fs_source.get("campaign--6a6ca372-ba07-42cc-81ef-9840fc1f963d")
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assert camp4_r.id == "campaign--6a6ca372-ba07-42cc-81ef-9840fc1f963d"
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assert camp4_r.name == "Ghengis Khan"
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os.remove(os.path.join(FS_PATH, "campaign", camp4_r.id + ".json"))
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def test_filesystem_sink_json_stix_bundle(fs_sink, fs_source):
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# add json-encoded stix bundle
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bund2 = '{"type": "bundle", "id": "bundle--3d267103-8475-4d8f-b321-35ec6eccfa37",' \
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' "objects": [{"type": "campaign", "spec_version": "2.1", "id": "campaign--2c03b8bf-82ee-433e-9918-ca2cb6e9534b",' \
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' "created":"2017-05-31T21:31:53.197755Z", "name": "Spartacus", "objective": "Oppressive regimes of Africa and Middle East"}]}'
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fs_sink.add(bund2)
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assert os.path.exists(os.path.join(FS_PATH, "campaign", "campaign--2c03b8bf-82ee-433e-9918-ca2cb6e9534b" + ".json"))
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camp5_r = fs_source.get("campaign--2c03b8bf-82ee-433e-9918-ca2cb6e9534b")
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assert camp5_r.id == "campaign--2c03b8bf-82ee-433e-9918-ca2cb6e9534b"
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assert camp5_r.name == "Spartacus"
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os.remove(os.path.join(FS_PATH, "campaign", camp5_r.id + ".json"))
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def test_filesystem_sink_add_objects_list(fs_sink, fs_source):
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# add list of objects
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camp6 = stix2.v21.Campaign(
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name="Comanche",
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objective="US Midwest manufacturing firms, oil refineries, and businesses",
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aliases=["Horse Warrior"],
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)
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camp7 = {
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"name": "Napolean",
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"type": "campaign",
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"spec_version": "2.1",
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"objective": "Central and Eastern Europe military commands and departments",
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"aliases": ["The Frenchmen"],
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"id": "campaign--122818b6-1112-4fb0-b11b-b111107ca70a",
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"created": "2017-05-31T21:31:53.197755Z",
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}
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fs_sink.add([camp6, camp7])
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assert os.path.exists(os.path.join(FS_PATH, "campaign", camp6.id + ".json"))
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assert os.path.exists(os.path.join(FS_PATH, "campaign", "campaign--122818b6-1112-4fb0-b11b-b111107ca70a" + ".json"))
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camp6_r = fs_source.get(camp6.id)
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assert camp6_r.id == camp6.id
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assert "Horse Warrior" in camp6_r.aliases
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camp7_r = fs_source.get(camp7["id"])
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assert camp7_r.id == camp7["id"]
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assert "The Frenchmen" in camp7_r.aliases
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# remove all added objects
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os.remove(os.path.join(FS_PATH, "campaign", camp6_r.id + ".json"))
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os.remove(os.path.join(FS_PATH, "campaign", camp7_r.id + ".json"))
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def test_filesystem_store_get_stored_as_bundle(fs_store):
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coa = fs_store.get("course-of-action--95ddb356-7ba0-4bd9-a889-247262b8946f")
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assert coa.id == "course-of-action--95ddb356-7ba0-4bd9-a889-247262b8946f"
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assert coa.type == "course-of-action"
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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")
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assert coa.id == "course-of-action--d9727aee-48b8-4fdb-89e2-4c49746ba4dd"
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assert coa.type == "course-of-action"
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def test_filesystem_store_all_versions(fs_store):
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# all versions() - (note at this time, all_versions() is still not applicable to FileSystem, as only one version is ever stored)
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rel = fs_store.all_versions("relationship--70dc6b5c-c524-429e-a6ab-0dd40f0482c1")[0]
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assert rel.id == "relationship--70dc6b5c-c524-429e-a6ab-0dd40f0482c1"
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assert rel.type == "relationship"
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def test_filesystem_store_query(fs_store):
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# query()
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tools = fs_store.query([stix2.Filter("tool_types", "in", "tool")])
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assert len(tools) == 2
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assert "tool--242f3da3-4425-4d11-8f5c-b842886da966" in [tool.id for tool in tools]
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assert "tool--03342581-f790-4f03-ba41-e82e67392e23" in [tool.id for tool in tools]
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def test_filesystem_store_query_single_filter(fs_store):
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query = stix2.Filter("tool_types", "in", "tool")
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tools = fs_store.query(query)
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assert len(tools) == 2
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assert "tool--242f3da3-4425-4d11-8f5c-b842886da966" in [tool.id for tool in tools]
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assert "tool--03342581-f790-4f03-ba41-e82e67392e23" in [tool.id for tool in tools]
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def test_filesystem_store_empty_query(fs_store):
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results = fs_store.query() # returns all
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assert len(results) == 26
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assert "tool--242f3da3-4425-4d11-8f5c-b842886da966" in [obj["id"] for obj in results]
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assert "marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168" in [obj["id"] for obj in results]
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def test_filesystem_store_query_multiple_filters(fs_store):
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fs_store.source.filters.add(stix2.Filter("tool_types", "in", "tool"))
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tools = fs_store.query(stix2.Filter("id", "=", "tool--242f3da3-4425-4d11-8f5c-b842886da966"))
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assert len(tools) == 1
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assert tools[0].id == "tool--242f3da3-4425-4d11-8f5c-b842886da966"
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def test_filesystem_store_query_dont_include_type_folder(fs_store):
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results = fs_store.query(stix2.Filter("type", "!=", "tool"))
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assert len(results) == 24
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def test_filesystem_store_add(fs_store):
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# add()
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camp1 = stix2.v21.Campaign(
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name="Great Heathen Army",
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objective="Targeting the government of United Kingdom and insitutions affiliated with the Church Of England",
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aliases=["Ragnar"],
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)
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fs_store.add(camp1)
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camp1_r = fs_store.get(camp1.id)
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assert camp1_r.id == camp1.id
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assert camp1_r.name == camp1.name
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# remove
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os.remove(os.path.join(FS_PATH, "campaign", camp1_r.id + ".json"))
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def test_filesystem_store_add_as_bundle():
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fs_store = stix2.FileSystemStore(FS_PATH, bundlify=True)
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camp1 = stix2.v21.Campaign(
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name="Great Heathen Army",
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objective="Targeting the government of United Kingdom and insitutions affiliated with the Church Of England",
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aliases=["Ragnar"],
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)
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fs_store.add(camp1)
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with open(os.path.join(FS_PATH, "campaign", camp1.id + ".json")) as bundle_file:
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assert '"type": "bundle"' in bundle_file.read()
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camp1_r = fs_store.get(camp1.id)
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assert camp1_r.id == camp1.id
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assert camp1_r.name == camp1.name
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shutil.rmtree(os.path.join(FS_PATH, "campaign"), True)
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def test_filesystem_add_bundle_object(fs_store):
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bundle = stix2.v21.Bundle()
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fs_store.add(bundle)
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def test_filesystem_store_add_invalid_object(fs_store):
|
|
ind = ('campaign', 'campaign--8e2e2d2b-17d4-4cbf-938f-98ee46b3cd3f') # 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 = stix2.v21.Campaign(
|
|
name="Scipio Africanus",
|
|
objective="Defeat the Carthaginians",
|
|
x_empire="Roman",
|
|
allow_custom=True,
|
|
)
|
|
|
|
fs_store.add(camp)
|
|
|
|
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 = stix2.v21.Campaign(
|
|
name="Scipio Africanus",
|
|
objective="Defeat the Carthaginians",
|
|
x_empire="Roman",
|
|
allow_custom=True,
|
|
)
|
|
|
|
bundle = stix2.v21.Bundle(camp, allow_custom=True)
|
|
fs_store.add(bundle)
|
|
|
|
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):
|
|
@stix2.v21.CustomObject(
|
|
'x-new-obj', [
|
|
('property1', stix2.properties.StringProperty(required=True)),
|
|
],
|
|
)
|
|
class NewObj():
|
|
pass
|
|
|
|
newobj = NewObj(property1='something')
|
|
fs_store.add(newobj)
|
|
|
|
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)
|
|
|
|
|
|
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)
|
|
assert any(x['id'] == INDICATOR_ID for x in resp)
|