324 lines
12 KiB
Python
324 lines
12 KiB
Python
from base64 import b64encode
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import json
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try:
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from urllib.parse import urlencode
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except ImportError:
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from urllib import urlencode
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import uuid
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from django.core.urlresolvers import reverse
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from django.test import RequestFactory, override_settings
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from django.test import TestCase
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from jwkest.jwk import KEYS
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from jwkest.jws import JWS
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from jwkest.jwt import JWT
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from oidc_provider.lib.utils.token import *
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from oidc_provider.tests.app.utils import *
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from oidc_provider.views import *
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from mock import patch
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class TokenTestCase(TestCase):
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"""
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To obtain an Access Token and an ID Token, the RP Client sends a
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Token Request to the Token Endpoint to obtain a Token Response
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when using the Authorization Code Flow.
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"""
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def setUp(self):
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self.factory = RequestFactory()
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self.user = create_fake_user()
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self.client = create_fake_client(response_type='code')
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def _auth_code_post_data(self, code):
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"""
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All the data that will be POSTed to the Token Endpoint.
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"""
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post_data = {
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'client_id': self.client.client_id,
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'client_secret': self.client.client_secret,
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'redirect_uri': self.client.default_redirect_uri,
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'grant_type': 'authorization_code',
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'code': code,
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'state': uuid.uuid4().hex,
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}
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return post_data
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def _refresh_token_post_data(self, refresh_token):
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"""
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All the data that will be POSTed to the Token Endpoint.
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"""
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post_data = {
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'client_id': self.client.client_id,
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'client_secret': self.client.client_secret,
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'grant_type': 'refresh_token',
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'refresh_token': refresh_token,
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}
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return post_data
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def _post_request(self, post_data, extras={}):
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"""
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Makes a request to the token endpoint by sending the
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`post_data` parameters using the 'application/x-www-form-urlencoded'
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format.
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"""
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url = reverse('oidc_provider:token')
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request = self.factory.post(url,
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data=urlencode(post_data),
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content_type='application/x-www-form-urlencoded',
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**extras)
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response = TokenView.as_view()(request)
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return response
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def _create_code(self):
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"""
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Generate a valid grant code.
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"""
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code = create_code(
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user=self.user,
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client=self.client,
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scope=['openid', 'email'],
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nonce=FAKE_NONCE)
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code.save()
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return code
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def _get_keys(self):
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"""
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Get public key from discovery.
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"""
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request = self.factory.get(reverse('oidc_provider:jwks'))
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response = JwksView.as_view()(request)
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jwks_dic = json.loads(response.content.decode('utf-8'))
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SIGKEYS = KEYS()
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SIGKEYS.load_dict(jwks_dic)
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return SIGKEYS
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def _get_userinfo(self, access_token):
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url = reverse('oidc_provider:userinfo')
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request = self.factory.get(url)
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request.META['HTTP_AUTHORIZATION'] = 'Bearer ' + access_token
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return userinfo(request)
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@override_settings(OIDC_TOKEN_EXPIRE=720)
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def test_authorization_code(self):
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"""
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We MUST validate the signature of the ID Token according to JWS
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using the algorithm specified in the alg Header Parameter of
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the JOSE Header.
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"""
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SIGKEYS = self._get_keys()
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code = self._create_code()
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post_data = self._auth_code_post_data(code=code.code)
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response = self._post_request(post_data)
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response_dic = json.loads(response.content.decode('utf-8'))
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id_token = JWS().verify_compact(response_dic['id_token'].encode('utf-8'), SIGKEYS)
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token = Token.objects.get(user=self.user)
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self.assertEqual(response_dic['access_token'], token.access_token)
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self.assertEqual(response_dic['refresh_token'], token.refresh_token)
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self.assertEqual(response_dic['token_type'], 'bearer')
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self.assertEqual(response_dic['expires_in'], 720)
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self.assertEqual(id_token['sub'], str(self.user.id))
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self.assertEqual(id_token['aud'], self.client.client_id)
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def test_refresh_token(self):
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"""
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A request to the Token Endpoint can also use a Refresh Token
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by using the grant_type value refresh_token, as described in
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Section 6 of OAuth 2.0 [RFC6749].
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"""
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SIGKEYS = self._get_keys()
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# Retrieve refresh token
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code = self._create_code()
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post_data = self._auth_code_post_data(code=code.code)
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real_now = timezone.now
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with patch('oidc_provider.lib.utils.token.timezone.now') as now:
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now.return_value = real_now()
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response = self._post_request(post_data)
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response_dic1 = json.loads(response.content.decode('utf-8'))
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id_token1 = JWS().verify_compact(response_dic1['id_token'].encode('utf-8'), SIGKEYS)
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# Use refresh token to obtain new token
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post_data = self._refresh_token_post_data(response_dic1['refresh_token'])
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with patch('oidc_provider.lib.utils.token.timezone.now') as now:
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now.return_value = real_now() + timedelta(minutes=10)
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response = self._post_request(post_data)
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response_dic2 = json.loads(response.content.decode('utf-8'))
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id_token2 = JWS().verify_compact(response_dic2['id_token'].encode('utf-8'), SIGKEYS)
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self.assertNotEqual(response_dic1['id_token'], response_dic2['id_token'])
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self.assertNotEqual(response_dic1['access_token'], response_dic2['access_token'])
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self.assertNotEqual(response_dic1['refresh_token'], response_dic2['refresh_token'])
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# http://openid.net/specs/openid-connect-core-1_0.html#rfc.section.12.2
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self.assertEqual(id_token1['iss'], id_token2['iss'])
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self.assertEqual(id_token1['sub'], id_token2['sub'])
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self.assertNotEqual(id_token1['iat'], id_token2['iat'])
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self.assertEqual(id_token1['aud'], id_token2['aud'])
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self.assertEqual(id_token1['auth_time'], id_token2['auth_time'])
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self.assertEqual(id_token1.get('azp'), id_token2.get('azp'))
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# Refresh token can't be reused
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post_data = self._refresh_token_post_data(response_dic1['refresh_token'])
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response = self._post_request(post_data)
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self.assertIn('invalid_grant', response.content.decode('utf-8'))
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# Old access token is invalidated
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self.assertEqual(self._get_userinfo(response_dic1['access_token']).status_code, 401)
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self.assertEqual(self._get_userinfo(response_dic2['access_token']).status_code, 200)
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# Empty refresh token is invalid
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post_data = self._refresh_token_post_data('')
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response = self._post_request(post_data)
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self.assertIn('invalid_grant', response.content.decode('utf-8'))
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# No refresh token is invalid
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post_data = self._refresh_token_post_data('')
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del post_data['refresh_token']
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response = self._post_request(post_data)
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self.assertIn('invalid_grant', response.content.decode('utf-8'))
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def test_request_methods(self):
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"""
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Client sends an HTTP POST request to the Token Endpoint. Other request
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methods MUST NOT be allowed.
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"""
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url = reverse('oidc_provider:token')
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requests = [
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self.factory.get(url),
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self.factory.put(url),
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self.factory.delete(url),
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]
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for request in requests:
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response = TokenView.as_view()(request)
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self.assertEqual(response.status_code == 405, True,
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msg=request.method+' request does not return a 405 status.')
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request = self.factory.post(url)
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response = TokenView.as_view()(request)
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self.assertEqual(response.status_code == 400, True,
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msg=request.method+' request does not return a 400 status.')
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def test_client_authentication(self):
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"""
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The authorization server support including the
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client credentials in the request-body using the `client_id` and
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`client_secret`parameters.
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See: http://tools.ietf.org/html/rfc6749#section-2.3.1
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"""
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code = self._create_code()
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# Test a valid request to the token endpoint.
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post_data = self._auth_code_post_data(code=code.code)
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response = self._post_request(post_data)
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self.assertEqual('invalid_client' in response.content.decode('utf-8'),
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False,
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msg='Client authentication fails using request-body credentials.')
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# Now, test with an invalid client_id.
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invalid_data = post_data.copy()
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invalid_data['client_id'] = self.client.client_id * 2 # Fake id.
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# Create another grant code.
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code = self._create_code()
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invalid_data['code'] = code.code
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response = self._post_request(invalid_data)
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self.assertEqual('invalid_client' in response.content.decode('utf-8'),
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True,
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msg='Client authentication success with an invalid "client_id".')
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# Now, test using HTTP Basic Authentication method.
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basicauth_data = post_data.copy()
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# Create another grant code.
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code = self._create_code()
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basicauth_data['code'] = code.code
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del basicauth_data['client_id']
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del basicauth_data['client_secret']
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# Generate HTTP Basic Auth header with id and secret.
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user_pass = self.client.client_id + ':' + self.client.client_secret
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auth_header = b'Basic ' + b64encode(user_pass.encode('utf-8'))
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response = self._post_request(basicauth_data, {
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'HTTP_AUTHORIZATION': auth_header.decode('utf-8'),
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})
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response.content.decode('utf-8')
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self.assertEqual('invalid_client' in response.content.decode('utf-8'),
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False,
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msg='Client authentication fails using HTTP Basic Auth.')
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def test_access_token_contains_nonce(self):
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"""
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If present in the Authentication Request, Authorization Servers MUST
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include a nonce Claim in the ID Token with the Claim Value being the
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nonce value sent in the Authentication Request.
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If the client does not supply a nonce parameter, it SHOULD not be
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included in the `id_token`.
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See http://openid.net/specs/openid-connect-core-1_0.html#IDToken
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"""
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code = self._create_code()
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post_data = self._auth_code_post_data(code=code.code)
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response = self._post_request(post_data)
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response_dic = json.loads(response.content.decode('utf-8'))
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id_token = JWT().unpack(response_dic['id_token'].encode('utf-8')).payload()
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self.assertEqual(id_token.get('nonce'), FAKE_NONCE)
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# Client does not supply a nonce parameter.
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code.nonce = ''
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code.save()
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response = self._post_request(post_data)
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response_dic = json.loads(response.content.decode('utf-8'))
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id_token = JWT().unpack(response_dic['id_token'].encode('utf-8')).payload()
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self.assertEqual(id_token.get('nonce'), None)
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def test_idtoken_sign_validation(self):
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"""
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We MUST validate the signature of the ID Token according to JWS
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using the algorithm specified in the alg Header Parameter of
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the JOSE Header.
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"""
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SIGKEYS = self._get_keys()
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RSAKEYS = [ k for k in SIGKEYS if k.kty == 'RSA' ]
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code = self._create_code()
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post_data = self._auth_code_post_data(code=code.code)
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response = self._post_request(post_data)
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response_dic = json.loads(response.content.decode('utf-8'))
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id_token = JWS().verify_compact(response_dic['id_token'].encode('utf-8'), RSAKEYS)
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