woggioni
3ebf079533
Replace wrapper-based SessionMiddleware/OIDCApp with KayaMixin subclasses applied via KayaApp(mixins=[...]). Mixins hook into handle_request and handle_websocket via before/after hooks, so both ASGI and RSGI keep working. Mixin dependencies are applied automatically and deduplicated.
361 lines
15 KiB
Python
361 lines
15 KiB
Python
import base64
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import unittest
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from time import time
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from typing import Mapping
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from urllib.parse import parse_qs, urlparse
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import httpx
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import jwt
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from cryptography.hazmat.primitives.asymmetric import rsa
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from pwo import async_test
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from kaya.core import HttpContext, KayaApp
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from kaya.session import InMemorySessionStore, SessionMixin
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from kaya.oidc import OIDCConfig, OIDCMixin
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from kaya.oidc._client import OIDCClient
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class MockOIDCProvider:
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def __init__(self) -> None:
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self.private_key = rsa.generate_private_key(public_exponent=65537, key_size=2048)
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self.public_key = self.private_key.public_key()
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self.kid = 'mock-key'
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self.issuer = 'https://mock-oidc.local'
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self.nonce = 'nonce-value'
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self.discovery = {
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'issuer': self.issuer,
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'authorization_endpoint': f'{self.issuer}/auth',
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'token_endpoint': f'{self.issuer}/token',
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'userinfo_endpoint': f'{self.issuer}/userinfo',
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'end_session_endpoint': f'{self.issuer}/logout',
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'jwks_uri': f'{self.issuer}/jwks',
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}
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def _public_key_to_jwk(self) -> dict[str, str]:
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numbers = self.public_key.public_numbers()
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e_bytes = numbers.e.to_bytes((numbers.e.bit_length() + 7) // 8, 'big')
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n_bytes = numbers.n.to_bytes((numbers.n.bit_length() + 7) // 8, 'big')
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return {
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'kty': 'RSA',
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'kid': self.kid,
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'use': 'sig',
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'n': base64.urlsafe_b64encode(n_bytes).rstrip(b'=').decode(),
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'e': base64.urlsafe_b64encode(e_bytes).rstrip(b'=').decode(),
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'alg': 'RS256',
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}
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def issue_id_token(self, nonce: str, audience: str, expired: bool = False, wrong_nonce: bool = False) -> str:
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now = time()
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exp = now - 3600 if expired else now + 3600
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payload = {
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'sub': 'user123',
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'iss': self.issuer,
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'aud': audience,
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'iat': now,
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'exp': exp,
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'nonce': 'wrong-nonce' if wrong_nonce else nonce,
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}
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return jwt.encode(
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payload,
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self.private_key,
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algorithm='RS256',
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headers={'kid': self.kid},
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)
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def handle_request(self, request: httpx.Request) -> httpx.Response:
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url = str(request.url)
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path = urlparse(url).path
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# Serve discovery and JWKS for any host so that issuer-mismatch tests can still fetch keys.
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if path == '/.well-known/openid-configuration':
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return httpx.Response(200, json=self.discovery)
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if path == '/jwks':
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return httpx.Response(200, json={'keys': [self._public_key_to_jwk()]})
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if path == '/token' and request.method == 'POST':
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body = request.content.decode()
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data = dict(part.split('=') for part in body.split('&')) if body else {}
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if data.get('grant_type') == 'refresh_token':
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return httpx.Response(200, json={
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'access_token': 'new-access-token',
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'refresh_token': 'new-refresh-token',
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'id_token': self.issue_id_token('refreshed-nonce', data.get('client_id', 'client')),
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'token_type': 'Bearer',
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})
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return httpx.Response(200, json={
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'access_token': 'mock-access-token',
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'refresh_token': 'mock-refresh-token',
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'id_token': self.issue_id_token(self.nonce, data.get('client_id', 'client')),
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'token_type': 'Bearer',
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})
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if path == '/userinfo':
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return httpx.Response(200, json={'sub': 'user123', 'email': 'user@example.com'})
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if path == '/logout':
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return httpx.Response(200)
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return httpx.Response(404)
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class MockTransport(httpx.AsyncBaseTransport):
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def __init__(self, provider: MockOIDCProvider) -> None:
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self._provider = provider
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async def handle_async_request(self, request: httpx.Request) -> httpx.Response:
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return self._provider.handle_request(request)
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class OIDCClientTest(unittest.TestCase):
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def setUp(self) -> None:
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self.provider = MockOIDCProvider()
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self.http_client = httpx.AsyncClient(transport=MockTransport(self.provider))
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self.config = OIDCConfig(
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issuer=self.provider.issuer,
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client_id='client',
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client_secret='secret',
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redirect_uri='http://localhost:8000/auth/callback',
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http_client=self.http_client,
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)
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self.client = OIDCClient(self.config)
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@async_test
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async def test_build_authorization_url(self) -> None:
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url, state, nonce, verifier = await self.client.build_authorization_url()
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self.assertIn(self.provider.discovery['authorization_endpoint'], url)
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parsed = urlparse(url)
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query = parse_qs(parsed.query)
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self.assertEqual(['client'], query['client_id'])
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self.assertEqual(['code'], query['response_type'])
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self.assertEqual(['S256'], query['code_challenge_method'])
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self.assertIn('openid', query['scope'][0])
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self.assertEqual([state], query['state'])
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self.assertEqual([nonce], query['nonce'])
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self.assertTrue(len(verifier) > 0)
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@async_test
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async def test_validate_id_token_success(self) -> None:
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token = self.provider.issue_id_token('nonce-value', 'client')
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claims = await self.client.validate_id_token(token, 'nonce-value')
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self.assertEqual('user123', claims['sub'])
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self.assertEqual('nonce-value', claims['nonce'])
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@async_test
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async def test_validate_id_token_wrong_nonce(self) -> None:
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token = self.provider.issue_id_token('nonce-value', 'client', wrong_nonce=True)
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with self.assertRaises(ValueError) as ctx:
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await self.client.validate_id_token(token, 'nonce-value')
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self.assertIn('nonce', str(ctx.exception))
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@async_test
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async def test_validate_id_token_expired(self) -> None:
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token = self.provider.issue_id_token('nonce-value', 'client', expired=True)
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with self.assertRaises(jwt.ExpiredSignatureError):
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await self.client.validate_id_token(token, 'nonce-value')
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@async_test
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async def test_validate_id_token_wrong_issuer(self) -> None:
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token = self.provider.issue_id_token('nonce-value', 'client')
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config = OIDCConfig(
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issuer='https://wrong-issuer.local',
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client_id='client',
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redirect_uri='http://localhost:8000/auth/callback',
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http_client=self.http_client,
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)
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client = OIDCClient(config)
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with self.assertRaises(jwt.InvalidIssuerError):
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await client.validate_id_token(token, 'nonce-value')
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@async_test
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async def test_validate_id_token_disallowed_algorithm(self) -> None:
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token = self.provider.issue_id_token('nonce-value', 'client')
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config = OIDCConfig(
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issuer=self.provider.issuer,
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client_id='client',
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redirect_uri='http://localhost:8000/auth/callback',
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http_client=self.http_client,
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allowed_id_token_algorithms=('ES256',),
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)
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client = OIDCClient(config)
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with self.assertRaises(ValueError) as ctx:
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await client.validate_id_token(token, 'nonce-value')
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self.assertIn('RS256', str(ctx.exception))
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@async_test
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async def test_fetch_userinfo(self) -> None:
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userinfo = await self.client.fetch_userinfo('access-token')
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self.assertEqual('user123', userinfo['sub'])
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self.assertEqual('user@example.com', userinfo['email'])
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@async_test
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async def test_build_logout_url(self) -> None:
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url = await self.client.build_logout_url('id-token')
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self.assertIsNotNone(url)
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assert url is not None
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self.assertIn(self.provider.discovery['end_session_endpoint'], url)
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parsed = urlparse(url)
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query = parse_qs(parsed.query)
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self.assertEqual(['id-token'], query['id_token_hint'])
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self.assertEqual(['/'], query['post_logout_redirect_uri'])
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class OIDCMixinTest(unittest.TestCase):
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def _build_app(self, fetch_userinfo: bool = False) -> tuple[KayaApp, OIDCMixin, MockOIDCProvider, InMemorySessionStore]:
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provider = MockOIDCProvider()
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http_client = httpx.AsyncClient(transport=MockTransport(provider))
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store = InMemorySessionStore()
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session = SessionMixin(store)
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config = OIDCConfig(
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issuer=provider.issuer,
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client_id='client',
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client_secret='secret',
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redirect_uri='http://localhost:8000/auth/callback',
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http_client=http_client,
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fetch_userinfo=fetch_userinfo,
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)
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oidc = OIDCMixin(config, session=session)
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app = KayaApp(mixins=[session, oidc])
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return app, oidc, provider, store
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def _setup_routes(self, app: KayaApp, oidc: OIDCMixin) -> None:
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@app.GET('/')
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async def home(ctx: HttpContext) -> None:
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await ctx.send_str(200, 'home')
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@app.GET('/profile')
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@oidc.require_auth
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async def profile(ctx: HttpContext) -> None:
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user = oidc.get_user(ctx)
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if user is None:
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await ctx.send_empty(401)
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return
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await ctx.send_str(200, f'Hello {user.email}')
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@app.GET('/refresh')
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@oidc.require_auth
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async def refresh(ctx: HttpContext) -> None:
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new_token = await oidc.refresh_access_token(ctx.session)
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await ctx.send_str(200, new_token or 'no-token')
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@async_test
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async def test_login_redirect(self) -> None:
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app, oidc, provider, store = self._build_app()
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self._setup_routes(app, oidc)
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transport = httpx.ASGITransport(app=app)
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async with httpx.AsyncClient(transport=transport, base_url='http://127.0.0.1:80') as client:
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r = await client.get('/auth/login', follow_redirects=False)
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self.assertEqual(302, r.status_code)
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location = r.headers['Location']
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self.assertIn(provider.discovery['authorization_endpoint'], location)
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self.assertIn('Set-Cookie', r.headers)
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@async_test
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async def test_callback_success(self) -> None:
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app, oidc, provider, store = self._build_app(fetch_userinfo=True)
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self._setup_routes(app, oidc)
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transport = httpx.ASGITransport(app=app)
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async with httpx.AsyncClient(transport=transport, base_url='http://127.0.0.1:80') as client:
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r = await client.get('/auth/login', follow_redirects=False)
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self.assertEqual(302, r.status_code)
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parsed = urlparse(r.headers['Location'])
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query = parse_qs(parsed.query)
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state = query['state'][0]
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nonce = query['nonce'][0]
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provider.nonce = nonce
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r = await client.get('/auth/callback', params={'code': 'mock-code', 'state': state}, follow_redirects=False)
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self.assertEqual(302, r.status_code)
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self.assertEqual('/', r.headers['Location'])
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self.assertIn('Set-Cookie', r.headers)
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r = await client.get('/profile')
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self.assertEqual(200, r.status_code)
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self.assertIn('user@example.com', r.text)
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@async_test
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async def test_callback_invalid_state(self) -> None:
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app, oidc, provider, store = self._build_app()
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self._setup_routes(app, oidc)
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transport = httpx.ASGITransport(app=app)
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async with httpx.AsyncClient(transport=transport, base_url='http://127.0.0.1:80') as client:
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r = await client.get('/auth/callback', params={'code': 'mock-code', 'state': 'wrong'}, follow_redirects=False)
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self.assertEqual(400, r.status_code)
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@async_test
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async def test_logout(self) -> None:
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app, oidc, provider, store = self._build_app()
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self._setup_routes(app, oidc)
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transport = httpx.ASGITransport(app=app)
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async with httpx.AsyncClient(transport=transport, base_url='http://127.0.0.1:80') as client:
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r = await client.get('/auth/login', follow_redirects=False)
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parsed = urlparse(r.headers['Location'])
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query = parse_qs(parsed.query)
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state = query['state'][0]
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provider.nonce = query['nonce'][0]
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await client.get('/auth/callback', params={'code': 'mock-code', 'state': state}, follow_redirects=False)
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session_id = client.cookies['session_id']
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self.assertIn(session_id, store._data)
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r = await client.get('/auth/logout', follow_redirects=False)
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self.assertEqual(302, r.status_code)
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self.assertIn(provider.discovery['end_session_endpoint'], r.headers['Location'])
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self.assertNotIn(session_id, store._data)
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@async_test
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async def test_require_auth_redirect(self) -> None:
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app, oidc, provider, store = self._build_app()
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self._setup_routes(app, oidc)
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transport = httpx.ASGITransport(app=app)
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async with httpx.AsyncClient(transport=transport, base_url='http://127.0.0.1:80') as client:
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r = await client.get('/profile', follow_redirects=False)
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self.assertEqual(302, r.status_code)
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self.assertEqual('/auth/login', r.headers['Location'])
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@async_test
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async def test_refresh_access_token(self) -> None:
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app, oidc, provider, store = self._build_app()
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self._setup_routes(app, oidc)
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transport = httpx.ASGITransport(app=app)
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async with httpx.AsyncClient(transport=transport, base_url='http://127.0.0.1:80') as client:
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r = await client.get('/auth/login', follow_redirects=False)
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parsed = urlparse(r.headers['Location'])
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query = parse_qs(parsed.query)
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state = query['state'][0]
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provider.nonce = query['nonce'][0]
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await client.get('/auth/callback', params={'code': 'mock-code', 'state': state}, follow_redirects=False)
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r = await client.get('/refresh')
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self.assertEqual(200, r.status_code)
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self.assertEqual('new-access-token', r.text)
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@async_test
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async def test_dependency_applied_automatically(self) -> None:
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# Only pass oidc to KayaApp; SessionMixin should be applied via dependencies.
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provider = MockOIDCProvider()
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http_client = httpx.AsyncClient(transport=MockTransport(provider))
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store = InMemorySessionStore()
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session = SessionMixin(store)
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config = OIDCConfig(
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issuer=provider.issuer,
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client_id='client',
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client_secret='secret',
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redirect_uri='http://localhost:8000/auth/callback',
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http_client=http_client,
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)
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oidc = OIDCMixin(config, session=session)
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app = KayaApp(mixins=[oidc])
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@app.GET('/')
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async def home(ctx: HttpContext) -> None:
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ctx.session['x'] = 1
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await ctx.send_str(200, 'ok')
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transport = httpx.ASGITransport(app=app)
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async with httpx.AsyncClient(transport=transport, base_url='http://127.0.0.1:80') as client:
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r = await client.get('/')
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self.assertEqual(200, r.status_code)
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self.assertIn('Set-Cookie', r.headers)
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if __name__ == '__main__':
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unittest.main()
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