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import pytest
from flask import json
from authlib.oauth2.rfc6749.grants import ClientCredentialsGrant
from authlib.oauth2.rfc7523 import JWTBearerClientAssertion
from authlib.oauth2.rfc7523 import client_secret_jwt_sign
from authlib.oauth2.rfc7523 import private_key_jwt_sign
from tests.util import read_file_path
@pytest.fixture(autouse=True)
def server(server):
class JWTClientCredentialsGrant(ClientCredentialsGrant):
TOKEN_ENDPOINT_AUTH_METHODS = [
JWTBearerClientAssertion.CLIENT_AUTH_METHOD,
]
server.register_grant(JWTClientCredentialsGrant)
return server
@pytest.fixture(autouse=True)
def client(client, db):
client.set_client_metadata(
{
"scope": "profile",
"redirect_uris": ["https://client.test/authorized"],
"grant_types": ["client_credentials"],
"token_endpoint_auth_method": JWTBearerClientAssertion.CLIENT_AUTH_METHOD,
}
)
db.session.add(client)
db.session.commit()
return client
def register_jwt_client_auth(server, validate_jti=True):
class JWTClientAuth(JWTBearerClientAssertion):
def validate_jti(self, claims, jti):
return True
def resolve_client_public_key(self, client, headers):
if headers["alg"] == "RS256":
return read_file_path("jwk_public.json")
return client.client_secret
server.register_client_auth_method(
JWTClientAuth.CLIENT_AUTH_METHOD,
JWTClientAuth("https://provider.test/oauth/token", validate_jti),
)
def test_invalid_client(test_client, server):
register_jwt_client_auth(server)
rv = test_client.post(
"/oauth/token",
data={
"grant_type": "client_credentials",
"client_assertion_type": JWTBearerClientAssertion.CLIENT_ASSERTION_TYPE,
},
)
resp = json.loads(rv.data)
assert resp["error"] == "invalid_client"
def test_invalid_jwt(test_client, server):
register_jwt_client_auth(server)
rv = test_client.post(
"/oauth/token",
data={
"grant_type": "client_credentials",
"client_assertion_type": JWTBearerClientAssertion.CLIENT_ASSERTION_TYPE,
"client_assertion": client_secret_jwt_sign(
client_secret="invalid-secret",
client_id="client-id",
token_endpoint="https://provider.test/oauth/token",
),
},
)
resp = json.loads(rv.data)
assert resp["error"] == "invalid_client"
def test_not_found_client(test_client, server):
register_jwt_client_auth(server)
rv = test_client.post(
"/oauth/token",
data={
"grant_type": "client_credentials",
"client_assertion_type": JWTBearerClientAssertion.CLIENT_ASSERTION_TYPE,
"client_assertion": client_secret_jwt_sign(
client_secret="client-secret",
client_id="invalid-client",
token_endpoint="https://provider.test/oauth/token",
),
},
)
resp = json.loads(rv.data)
assert resp["error"] == "invalid_client"
def test_not_supported_auth_method(test_client, server, client, db):
register_jwt_client_auth(server)
client.set_client_metadata(
{
"scope": "profile",
"redirect_uris": ["https://client.test/authorized"],
"grant_types": ["client_credentials"],
"token_endpoint_auth_method": "invalid",
}
)
db.session.add(client)
db.session.commit()
rv = test_client.post(
"/oauth/token",
data={
"grant_type": "client_credentials",
"client_assertion_type": JWTBearerClientAssertion.CLIENT_ASSERTION_TYPE,
"client_assertion": client_secret_jwt_sign(
client_secret="client-secret",
client_id="client-id",
token_endpoint="https://provider.test/oauth/token",
),
},
)
resp = json.loads(rv.data)
assert resp["error"] == "invalid_client"
def test_client_secret_jwt(test_client, server):
register_jwt_client_auth(server)
rv = test_client.post(
"/oauth/token",
data={
"grant_type": "client_credentials",
"client_assertion_type": JWTBearerClientAssertion.CLIENT_ASSERTION_TYPE,
"client_assertion": client_secret_jwt_sign(
client_secret="client-secret",
client_id="client-id",
token_endpoint="https://provider.test/oauth/token",
claims={"jti": "nonce"},
),
},
)
resp = json.loads(rv.data)
assert "access_token" in resp
def test_private_key_jwt(test_client, server):
register_jwt_client_auth(server)
rv = test_client.post(
"/oauth/token",
data={
"grant_type": "client_credentials",
"client_assertion_type": JWTBearerClientAssertion.CLIENT_ASSERTION_TYPE,
"client_assertion": private_key_jwt_sign(
private_key=read_file_path("jwk_private.json"),
client_id="client-id",
token_endpoint="https://provider.test/oauth/token",
),
},
)
resp = json.loads(rv.data)
assert "access_token" in resp
def test_not_validate_jti(test_client, server):
register_jwt_client_auth(server, validate_jti=False)
rv = test_client.post(
"/oauth/token",
data={
"grant_type": "client_credentials",
"client_assertion_type": JWTBearerClientAssertion.CLIENT_ASSERTION_TYPE,
"client_assertion": client_secret_jwt_sign(
client_secret="client-secret",
client_id="client-id",
token_endpoint="https://provider.test/oauth/token",
),
},
)
resp = json.loads(rv.data)
assert "access_token" in resp
|
