MISP
/
cti-python-stix2
mirror of https://github.com/MISP/cti-python-stix2
2
0
Fork 0
Code Issues Releases Wiki Activity
cti-python-stix2/stix2/test/test_data_sources.py

374 lines
12 KiB
Python
Raw Blame History

import pytest
from taxii2client import Collection
from stix2.sources import (CompositeDataSource, DataSink, DataSource,
DataStore, Filter, make_id, taxii)
from stix2.sources.memory import MemorySource
COLLECTION_URL = 'https://example.com/api1/collections/91a7b528-80eb-42ed-a74d-c6fbd5a26116/'
class MockTAXIIClient(object):
"""Mock for taxii2_client.TAXIIClient"""
pass
@pytest.fixture
def collection():
return Collection(COLLECTION_URL, MockTAXIIClient())
def test_ds_smoke():
ds1 = DataSource()
ds2 = DataSink()
ds3 = DataStore(source=ds1, sink=ds2)
with pytest.raises(NotImplementedError):
ds3.add(None)
with pytest.raises(NotImplementedError):
ds3.all_versions("malware--fdd60b30-b67c-11e3-b0b9-f01faf20d111")
with pytest.raises(NotImplementedError):
ds3.get("malware--fdd60b30-b67c-11e3-b0b9-f01faf20d111")
with pytest.raises(NotImplementedError):
ds3.query([Filter("id", "=", "malware--fdd60b30-b67c-11e3-b0b9-f01faf20d111")])
def test_ds_taxii(collection):
ds = taxii.TAXIICollectionSource(collection)
assert ds.name == 'TAXIICollectionSource'
def test_ds_taxii_name(collection):
ds = taxii.TAXIICollectionSource(collection, name='My Data Source Name')
assert ds.name == "My Data Source Name"
def test_parse_taxii_filters():
query = [
Filter("added_after", "=", "2016-02-01T00:00:01.000Z"),
Filter("id", "=", "taxii stix object ID"),
Filter("type", "=", "taxii stix object ID"),
Filter("version", "=", "first"),
Filter("created_by_ref", "=", "Bane"),
]
expected_params = {
"added_after": "2016-02-01T00:00:01.000Z",
"match[id]": "taxii stix object ID",
"match[type]": "taxii stix object ID",
"match[version]": "first"
}
ds = taxii.TAXIICollectionSource(collection)
taxii_filters = ds._parse_taxii_filters(query)
assert taxii_filters == expected_params
def test_add_get_remove_filter():
# First 3 filters are valid, remaining fields are erroneous in some way
valid_filters = [
Filter('type', '=', 'malware'),
Filter('id', '!=', 'stix object id'),
Filter('labels', 'in', ["heartbleed", "malicious-activity"]),
]
invalid_filters = [
Filter('description', '=', 'not supported field - just place holder'),
Filter('modified', '*', 'not supported operator - just place holder'),
Filter('created', '=', object()),
]
ds = DataSource()
assert len(ds.filters) == 0
ds.add_filter(valid_filters[0])
assert len(ds.filters) == 1
# Addin the same filter again will have no effect since `filters` uses a set
ds.add_filter(valid_filters[0])
assert len(ds.filters) == 1
ds.add_filter(valid_filters[1])
assert len(ds.filters) == 2
ds.add_filter(valid_filters[2])
assert len(ds.filters) == 3
# TODO: make better error messages
with pytest.raises(ValueError) as excinfo:
ds.add_filter(invalid_filters[0])
assert str(excinfo.value) == "Filter 'field' is not a STIX 2.0 common property. Currently only STIX object common properties supported"
with pytest.raises(ValueError) as excinfo:
ds.add_filter(invalid_filters[1])
assert str(excinfo.value) == "Filter operation(from 'op' field) not supported"
with pytest.raises(ValueError) as excinfo:
ds.add_filter(invalid_filters[2])
assert str(excinfo.value) == "Filter 'value' type is not supported. The type(value) must be python immutable type or dictionary"
assert set(valid_filters) == ds.filters
# remove
ds.filters.remove(valid_filters[0])
assert len(ds.filters) == 2
ds.add_filters(valid_filters)
def test_apply_common_filters():
stix_objs = [
{
"created": "2017-01-27T13:49:53.997Z",
"description": "\n\nTITLE:\n\tPoison Ivy",
"id": "malware--fdd60b30-b67c-11e3-b0b9-f01faf20d111",
"labels": [
"remote-access-trojan"
],
"modified": "2017-01-27T13:49:53.997Z",
"name": "Poison Ivy",
"type": "malware"
},
{
"created": "2014-05-08T09:00:00.000Z",
"id": "indicator--a932fcc6-e032-176c-126f-cb970a5a1ade",
"labels": [
"file-hash-watchlist"
],
"modified": "2014-05-08T09:00:00.000Z",
"name": "File hash for Poison Ivy variant",
"pattern": "[file:hashes.'SHA-256' = 'ef537f25c895bfa782526529a9b63d97aa631564d5d789c2b765448c8635fb6c']",
"type": "indicator",
"valid_from": "2014-05-08T09:00:00.000000Z"
},
{
"created": "2014-05-08T09:00:00.000Z",
"id": "relationship--2f9a9aa9-108a-4333-83e2-4fb25add0463",
"modified": "2014-05-08T09:00:00.000Z",
"relationship_type": "indicates",
"source_ref": "indicator--a932fcc6-e032-176c-126f-cb970a5a1ade",
"target_ref": "malware--fdd60b30-b67c-11e3-b0b9-f01faf20d111",
"type": "relationship"
}
]
filters = [
Filter("type", "!=", "relationship"),
Filter("id", "=", "relationship--2f9a9aa9-108a-4333-83e2-4fb25add0463"),
Filter("labels", "in", "remote-access-trojan"),
]
ds = DataSource()
resp = ds.apply_common_filters(stix_objs, [filters[0]])
ids = [r['id'] for r in resp]
assert stix_objs[0]['id'] in ids
assert stix_objs[1]['id'] in ids
resp = ds.apply_common_filters(stix_objs, [filters[1]])
assert resp[0]['id'] == stix_objs[2]['id']
resp = ds.apply_common_filters(stix_objs, [filters[2]])
assert resp[0]['id'] == stix_objs[0]['id']
STIX_OBJS1 = [
{
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
},
{
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
},
{
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.936Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
},
{
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
},
{
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
}
]
STIX_OBJS2 = [
{
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-31T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
},
{
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
},
{
"created": "2017-01-27T13:49:53.935Z",
"id": "indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f",
"labels": [
"url-watchlist"
],
"modified": "2017-01-27T13:49:53.935Z",
"name": "Malicious site hosting downloader",
"pattern": "[url:value = 'http://x4z9arb.cn/4712']",
"type": "indicator",
"valid_from": "2017-01-27T13:49:53.935382Z"
}
]
def test_deduplicate():
ds = DataSource()
unique = ds.deduplicate(STIX_OBJS1)
# Only 3 objects are unique
# 2 id's vary
# 2 modified times vary for a particular id
assert len(unique) == 3
ids = [obj['id'] for obj in unique]
mods = [obj['modified'] for obj in unique]
assert "indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f" in ids
assert "indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f" in ids
assert "2017-01-27T13:49:53.935Z" in mods
assert "2017-01-27T13:49:53.936Z" in mods
def test_add_remove_composite_datasource():
cds = CompositeDataSource()
ds1 = DataSource()
ds2 = DataSource()
ds3 = DataSink()
cds.add_data_source([ds1, ds2, ds1, ds3])
assert len(cds.get_all_data_sources()) == 2
cds.remove_data_source([ds1.id_, ds2.id_])
assert len(cds.get_all_data_sources()) == 0
with pytest.raises(ValueError):
cds.remove_data_source([ds3.id_])
def test_composite_datasource_operations():
BUNDLE1 = dict(id="bundle--%s" % make_id(),
objects=STIX_OBJS1,
spec_version="2.0",
type="bundle")
cds = CompositeDataSource()
ds1 = MemorySource(stix_data=BUNDLE1)
ds2 = MemorySource(stix_data=STIX_OBJS2)
cds.add_data_source([ds1, ds2])
indicators = cds.all_versions("indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f")
# In STIX_OBJS2 changed the 'modified' property to a later time...
assert len(indicators) == 2
indicator = cds.get("indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f")
assert indicator["id"] == "indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f"
assert indicator["modified"] == "2017-01-31T13:49:53.935Z"
assert indicator["type"] == "indicator"
query = [
Filter("type", "=", "indicator")
]
results = cds.query(query)
# STIX_OBJS2 has indicator with later time, one with different id, one with
# original time in STIX_OBJS1
assert len(results) == 3
# def test_data_source_file():
# ds = file.FileDataSource()
#
# assert ds.name == "DataSource"
#
#
# def test_data_source_name():
# ds = file.FileDataSource(name="My File Data Source")
#
# assert ds.name == "My File Data Source"
#
#
# def test_data_source_get():
# ds = file.FileDataSource(name="My File Data Source")
#
# with pytest.raises(NotImplementedError):
# ds.get("foo")
#
# #filter testing
# def test_add_filter():
# ds = file.FileDataSource()
Reference in New Issue View Git Blame Copy Permalink