def establish_connection(collection: str):
"""establish a connection with the TAXII server.
arguments:
collection: string, the url of the collection with which to connect.
returns:
connection to the taxii collection
"""
try:
with open('proxy.json', "r") as json_data:
proxies = json.load(json_data)
link = t2c._HTTPConnection()
link.session.proxies.update(proxies)
collection = t2c.Collection(collection, conn=link)
tc_src = TAXIICollectionSource(collection)
except:
if verbose:
print(
"unable to find proxy file, falling back to standard callout... ",
end="",
flush=True)
# Establish TAXII2 Collection instance for Enterprise ATT&CK collection
collection = t2c.Collection(collection)
# Supply the collection to TAXIICollection
tc_src = TAXIICollectionSource(collection)
return tc_src
def test_taxii_endpoint_raises_exception():
"""Test exception is raised when conn and (user or pass) is provided"""
conn = _HTTPConnection(user="******", password="******", verify=False)
with pytest.raises(InvalidArgumentsError) as excinfo:
_TAXIIEndpoint("https://example.com/api1/collections/", conn, "other", "test")
assert "A connection and user/password may not both be provided." in str(excinfo.value)
def test_header_merging():
conn = _HTTPConnection()
headers = conn._merge_headers({"AddedHeader": "addedvalue"})
assert headers == {
"user-agent": DEFAULT_USER_AGENT,
"addedheader": "addedvalue"
}
def test_valid_content_type_for_connection():
"""The server responded with charset=utf-8, but the media types are correct
and first."""
responses.add(responses.GET, COLLECTION_URL, COLLECTIONS_RESPONSE,
status=200,
content_type=MEDIA_TYPE_TAXII_V20 + "; charset=utf-8")
conn = _HTTPConnection(user="******", password="******", verify=False)
conn.get("https://example.com/api1/collections/91a7b528-80eb-42ed-a74d-c6fbd5a26116/", MEDIA_TYPE_TAXII_V20, None)
def test_conn_post_kwarg_errors():
conn = _HTTPConnection()
with pytest.raises(InvalidArgumentsError):
conn.post(DISCOVERY_URL, data=1, json=2)
with pytest.raises(InvalidArgumentsError):
conn.post(DISCOVERY_URL, data=1, foo=2)
with pytest.raises(InvalidArgumentsError):
conn.post(DISCOVERY_URL, foo=1)
def test_invalid_content_type_for_connection():
responses.add(responses.GET, COLLECTION_URL, COLLECTIONS_RESPONSE,
status=200,
content_type=MEDIA_TYPE_TAXII_V20)
with pytest.raises(TAXIIServiceException) as excinfo:
conn = _HTTPConnection(user="******", password="******", verify=False)
conn.get("https://example.com/api1/collections/91a7b528-80eb-42ed-a74d-c6fbd5a26116/", MEDIA_TYPE_TAXII_V20 + "; charset=utf-8", None)
assert ("Unexpected Response. Got Content-Type: 'application/vnd.oasis.taxii+json; "
"version=2.0' for Accept: 'application/vnd.oasis.taxii+json; version=2.0; "
"charset=utf-8'") == str(excinfo.value)
def test_user_agent_enforcing3():
conn = _HTTPConnection(user_agent=None)
headers = conn._merge_headers({"User-Agent": None})
assert headers["user-agent"] == DEFAULT_USER_AGENT
def test_user_agent_overriding():
conn = _HTTPConnection(user_agent="foo/1.0")
headers = conn._merge_headers({"User-Agent": "bar/2.0"})
assert headers["user-agent"] == "bar/2.0"
def test_user_agent_defaulting():
conn = _HTTPConnection(user_agent="foo/1.0")
headers = conn._merge_headers({})
# also test key access is case-insensitive
assert headers["user-agent"] == "foo/1.0"
def test_header_merge_none():
conn = _HTTPConnection()
headers = conn._merge_headers(None)
assert headers == {"user-agent": DEFAULT_USER_AGENT}
