# Copyright (C) 2020-2021 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU Affero General Public License version 3, or any later version
# See top-level LICENSE file for more information
from copy import copy
from datetime import datetime, timezone
import json
from typing import Dict, List, Optional
from unittest.mock import Mock
from keycloak.exceptions import KeycloakError
import pytest
from swh.auth.keycloak import KeycloakOpenIDConnect
from swh.auth.tests.sample_data import (
CLIENT_ID,
OIDC_PROFILE,
RAW_REALM_PUBLIC_KEY,
REALM_NAME,
SERVER_URL,
USER_INFO,
)
[docs]
class KeycloackOpenIDConnectMock(KeycloakOpenIDConnect):
"""Mock KeycloakOpenIDConnect class to allow testing
Args:
server_url: Server main auth url (cf.
:py:data:`swh.auth.tests.sample_data.SERVER_URL`)
realm_name: Realm (cf. :py:data:`swh.auth.tests.sample_data.REALM_NAME`)
client_id: Client id (cf. :py:data:`swh.auth.tests.sample_data.CLIENT_ID`)
auth_success: boolean flag to simulate authentication success or failure
exp: expiration delay
user_groups: user groups configuration (if any)
realm_permissions: user permissions configuration at realm level (if any)
client_permissions: user permissions configuration at client level (if any)
oidc_profile: Dict response from a call to a token authentication query (cf.
:py:data:`swh.auth.tests.sample_data.OIDC_PROFILE`)
user_info: Dict response from a call to userinfo query (cf.
:py:data:`swh.auth.tests.sample_data.USER_INFO`)
raw_realm_public_key: A raw ascii text representing the realm public key (cf.
:py:data:`swh.auth.tests.sample_data.RAW_REALM_PUBLIC_KEY`)
"""
def __init__(
self,
server_url: str,
realm_name: str,
client_id: str,
auth_success: bool = True,
exp: Optional[int] = None,
user_groups: List[str] = [],
realm_permissions: List[str] = [],
client_permissions: List[str] = [],
oidc_profile: Dict = OIDC_PROFILE,
user_info: Dict = USER_INFO,
raw_realm_public_key: str = RAW_REALM_PUBLIC_KEY,
):
"""Constructor"""
super().__init__(
server_url=server_url, realm_name=realm_name, client_id=client_id
)
self.exp = exp
self.user_groups = user_groups
self.realm_permissions = realm_permissions
self.client_permissions = client_permissions
self._keycloak.public_key = lambda: raw_realm_public_key
self._keycloak.well_known = lambda: {
"issuer": f"{self.server_url}realms/{self.realm_name}",
"authorization_endpoint": (
f"{self.server_url}realms/"
f"{self.realm_name}/protocol/"
"openid-connect/auth"
),
"token_endpoint": (
f"{self.server_url}realms/{self.realm_name}/"
"protocol/openid-connect/token"
),
"token_introspection_endpoint": (
f"{self.server_url}realms/"
f"{self.realm_name}/protocol/"
"openid-connect/token/"
"introspect"
),
"userinfo_endpoint": (
f"{self.server_url}realms/{self.realm_name}/"
"protocol/openid-connect/userinfo"
),
"end_session_endpoint": (
f"{self.server_url}realms/"
f"{self.realm_name}/protocol/"
"openid-connect/logout"
),
"jwks_uri": (
f"{self.server_url}realms/{self.realm_name}/"
"protocol/openid-connect/certs"
),
}
# for python-keycloak < 1.0.0:
self._keycloak.well_know = self._keycloak.well_known
self.set_auth_success(auth_success, oidc_profile, user_info)
[docs]
def decode_token(self, token):
options = {}
if self.auth_success:
# skip signature expiration and audience checks as we use a static
# oidc_profile for the tests with expired tokens in it
options["verify_exp"] = False
options["verify_aud"] = False
decoded = super().decode_token(token, options)
# Merge the user info configured to be part of the decode token
userinfo = self.userinfo()
if userinfo is not None:
decoded = {**decoded, **userinfo}
# tweak auth and exp time for tests
expire_in = decoded["exp"] - decoded["iat"]
if self.exp is not None:
decoded["exp"] = self.exp
decoded["iat"] = self.exp - expire_in
else:
now = int(datetime.now(tz=timezone.utc).timestamp())
decoded["iat"] = now
decoded["exp"] = now + expire_in
decoded["groups"] = self.user_groups
decoded["aud"] = [self.client_id, "account"]
decoded["azp"] = self.client_id
decoded["realm_access"]["roles"] += self.realm_permissions
if self.client_permissions:
decoded["resource_access"][self.client_id] = {
"roles": self.client_permissions
}
return decoded
[docs]
def set_auth_success(
self,
auth_success: bool,
oidc_profile: Optional[Dict] = None,
user_info: Optional[Dict] = None,
) -> None:
# following type ignore because mypy is not too happy about affecting mock to
# method "Cannot assign to a method affecting mock". Ignore for now.
self.authorization_code = Mock() # type: ignore
self.refresh_token = Mock() # type: ignore
self.login = Mock() # type: ignore
self.userinfo = Mock() # type: ignore
self.logout = Mock() # type: ignore
self.auth_success = auth_success
if auth_success:
self.authorization_code.return_value = copy(oidc_profile)
self.refresh_token.return_value = copy(oidc_profile)
self.login.return_value = copy(oidc_profile)
self.userinfo.return_value = copy(user_info)
else:
self.authorization_url = Mock() # type: ignore
error = {
"error": "invalid_grant",
"error_description": "Invalid user credentials",
}
error_message = json.dumps(error).encode()
exception = KeycloakError(error_message=error_message, response_code=401)
self.authorization_code.side_effect = exception
self.authorization_url.side_effect = exception
self.refresh_token.side_effect = exception
self.userinfo.side_effect = exception
self.logout.side_effect = exception
self.login.side_effect = exception
[docs]
def keycloak_oidc_factory(
server_url: str,
realm_name: str,
client_id: str,
auth_success: bool = True,
exp: Optional[int] = None,
user_groups: List[str] = [],
realm_permissions: List[str] = [],
client_permissions: List[str] = [],
oidc_profile: Dict = OIDC_PROFILE,
user_info: Dict = USER_INFO,
raw_realm_public_key: str = RAW_REALM_PUBLIC_KEY,
):
"""Keycloak mock fixture factory. Report to
:py:class:`swh.auth.pytest_plugin.KeycloackOpenIDConnectMock` docstring.
"""
@pytest.fixture
def keycloak_oidc():
return KeycloackOpenIDConnectMock(
server_url=server_url,
realm_name=realm_name,
client_id=client_id,
auth_success=auth_success,
exp=exp,
user_groups=user_groups,
realm_permissions=realm_permissions,
client_permissions=client_permissions,
oidc_profile=oidc_profile,
user_info=user_info,
raw_realm_public_key=raw_realm_public_key,
)
return keycloak_oidc
# for backward compatibility
# TODO: remove that alias once swh-deposit and swh-web use new function name
keycloak_mock_factory = keycloak_oidc_factory
# generic keycloak fixture that can be used within tests
# (cf. test_keycloak.py, test_utils.py, django related tests)
# or external modules using that pytest plugin
_keycloak_oidc = keycloak_oidc_factory(
server_url=SERVER_URL,
realm_name=REALM_NAME,
client_id=CLIENT_ID,
)
[docs]
@pytest.fixture
def keycloak_oidc(_keycloak_oidc, mocker):
for oidc_client_factory in (
"swh.auth.django.views.keycloak_oidc_client",
"swh.auth.django.backends.keycloak_oidc_client",
):
keycloak_oidc_client = mocker.patch(oidc_client_factory)
keycloak_oidc_client.return_value = _keycloak_oidc
return _keycloak_oidc
