django-oidc-provider/oidc_provider/tests/test_token_endpoint.py

324 lines
12 KiB
Python

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