/
test_token_endpoint.py
738 lines (577 loc) · 27.4 KB
/
test_token_endpoint.py
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import json
import time
import uuid
from base64 import b64encode
try:
from urllib.parse import urlencode
except ImportError:
from urllib import urlencode
from django.core.management import call_command
try:
from django.urls import reverse
except ImportError:
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 mock import patch, Mock
from oidc_provider.lib.utils.token import create_code
from oidc_provider.models import Token
from oidc_provider.tests.app.utils import (
create_fake_user,
create_fake_client,
FAKE_CODE_CHALLENGE,
FAKE_CODE_VERIFIER,
FAKE_NONCE,
FAKE_RANDOM_STRING,
)
from oidc_provider.views import (
JwksView,
TokenView,
userinfo,
)
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):
call_command('creatersakey')
self.factory = RequestFactory()
self.user = create_fake_user()
self.client = create_fake_client(response_type='code')
def _password_grant_post_data(self, scope=None):
result = {
'username': 'johndoe',
'password': '1234',
'grant_type': 'password',
'scope': 'openid email',
}
if scope is not None:
result['scope'] = ' '.join(scope)
return result
def _auth_code_post_data(self, code, scope=None):
"""
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,
}
if scope is not None:
post_data['scope'] = ' '.join(scope)
return post_data
def _refresh_token_post_data(self, refresh_token, scope=None):
"""
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,
}
if scope is not None:
post_data['scope'] = ' '.join(scope)
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, scope=None):
"""
Generate a valid grant code.
"""
code = create_code(
user=self.user,
client=self.client,
scope=(scope if scope else ['openid', 'email']),
nonce=FAKE_NONCE,
is_authentication=True)
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)
def _password_grant_auth_header(self):
user_pass = self.client.client_id + ':' + self.client.client_secret
auth = b'Basic ' + b64encode(user_pass.encode('utf-8'))
auth_header = {'HTTP_AUTHORIZATION': auth.decode('utf-8')}
return auth_header
# Resource Owner Password Credentials Grant
# requirements to satisfy in all test_password_grant methods
# https://tools.ietf.org/html/rfc6749#section-4.3.2
#
# grant_type
# REQUIRED. Value MUST be set to "password".
# username
# REQUIRED. The resource owner username.
# password
# REQUIRED. The resource owner password.
# scope
# OPTIONAL. The scope of the access request as described by
# Section 3.3.
#
# The authorization server MUST:
# o require client authentication for confidential clients or for any
# client that was issued client credentials (or with other
# authentication requirements),
# o authenticate the client if client authentication is included, and
# o validate the resource owner password credentials using its
# existing password validation algorithm.
def test_default_setting_does_not_allow_grant_type_password(self):
post_data = self._password_grant_post_data()
response = self._post_request(
post_data=post_data,
extras=self._password_grant_auth_header()
)
response_dict = json.loads(response.content.decode('utf-8'))
self.assertEqual(400, response.status_code)
self.assertEqual('unsupported_grant_type', response_dict['error'])
@override_settings(OIDC_GRANT_TYPE_PASSWORD_ENABLE=True)
def test_password_grant_get_access_token_without_scope(self):
post_data = self._password_grant_post_data()
del (post_data['scope'])
response = self._post_request(
post_data=post_data,
extras=self._password_grant_auth_header()
)
response_dict = json.loads(response.content.decode('utf-8'))
self.assertIn('access_token', response_dict)
@override_settings(OIDC_GRANT_TYPE_PASSWORD_ENABLE=True)
def test_password_grant_get_access_token_with_scope(self):
response = self._post_request(
post_data=self._password_grant_post_data(),
extras=self._password_grant_auth_header()
)
response_dict = json.loads(response.content.decode('utf-8'))
self.assertIn('access_token', response_dict)
@override_settings(OIDC_GRANT_TYPE_PASSWORD_ENABLE=True)
def test_password_grant_get_access_token_invalid_user_credentials(self):
invalid_post = self._password_grant_post_data()
invalid_post['password'] = 'wrong!'
response = self._post_request(
post_data=invalid_post,
extras=self._password_grant_auth_header()
)
response_dict = json.loads(response.content.decode('utf-8'))
self.assertEqual(403, response.status_code)
self.assertEqual('access_denied', response_dict['error'])
def test_password_grant_get_access_token_invalid_client_credentials(self):
self.client.client_id = 'foo'
self.client.client_secret = 'bar'
response = self._post_request(
post_data=self._password_grant_post_data(),
extras=self._password_grant_auth_header()
)
response_dict = json.loads(response.content.decode('utf-8'))
self.assertEqual(400, response.status_code)
self.assertEqual('invalid_client', response_dict['error'])
def test_password_grant_full_response(self):
self.check_password_grant(scope=['openid', 'email'])
def test_password_grant_scope(self):
self.check_password_grant(scope=['openid', 'profile'])
@override_settings(OIDC_TOKEN_EXPIRE=120,
OIDC_GRANT_TYPE_PASSWORD_ENABLE=True)
def check_password_grant(self, scope):
response = self._post_request(
post_data=self._password_grant_post_data(scope),
extras=self._password_grant_auth_header()
)
response_dict = json.loads(response.content.decode('utf-8'))
id_token = JWS().verify_compact(response_dict['id_token'].encode('utf-8'), self._get_keys())
token = Token.objects.get(user=self.user)
self.assertEqual(response_dict['access_token'], token.access_token)
self.assertEqual(response_dict['refresh_token'], token.refresh_token)
self.assertEqual(response_dict['expires_in'], 120)
self.assertEqual(response_dict['token_type'], 'bearer')
self.assertEqual(id_token['sub'], str(self.user.id))
self.assertEqual(id_token['aud'], self.client.client_id)
# Check the scope is honored by checking the claims in the userinfo
userinfo_response = self._get_userinfo(response_dict['access_token'])
userinfo = json.loads(userinfo_response.content.decode('utf-8'))
for (scope_param, claim) in [('email', 'email'), ('profile', 'name')]:
if scope_param in scope:
self.assertIn(claim, userinfo)
else:
self.assertNotIn(claim, userinfo)
@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)
@override_settings(OIDC_TOKEN_EXPIRE=720)
def test_scope_is_ignored_for_auth_code(self):
"""
Scope is ignored for token respones to auth code grant type.
"""
SIGKEYS = self._get_keys()
for code_scope in [['openid'], ['openid', 'email']]:
code = self._create_code(code_scope)
post_data = self._auth_code_post_data(
code=code.code, scope=['openid', 'profile'])
response = self._post_request(post_data)
response_dic = json.loads(response.content.decode('utf-8'))
self.assertEqual(response.status_code, 200)
id_token = JWS().verify_compact(response_dic['id_token'].encode('utf-8'), SIGKEYS)
if 'email' in code_scope:
self.assertIn('email', id_token)
else:
self.assertNotIn('email', id_token)
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].
"""
self.do_refresh_token_check()
def test_refresh_token_invalid_scope(self):
"""
Extending scope in refresh token is not allowed.
Try to get a refresh token with "profile" in the scope even
though the original authorized scope in the authorization code
request is only ['openid', 'email'].
"""
self.do_refresh_token_check(scope=['openid', 'profile'])
def test_refresh_token_narrowed_scope(self):
"""
Narrowing scope in refresh token is allowed.
Try to get a refresh token with just "openid" in the scope even
though the original authorized scope in the authorization code
request is ['openid', 'email'].
"""
self.do_refresh_token_check(scope=['openid'])
def do_refresh_token_check(self, scope=None):
SIGKEYS = self._get_keys()
# Retrieve refresh token
code = self._create_code()
self.assertEqual(code.scope, ['openid', 'email'])
post_data = self._auth_code_post_data(code=code.code)
start_time = time.time()
with patch('oidc_provider.lib.utils.token.time.time') as time_func:
time_func.return_value = start_time
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'], scope)
with patch('oidc_provider.lib.utils.token.time.time') as time_func:
time_func.return_value = start_time + 600
response = self._post_request(post_data)
response_dic2 = json.loads(response.content.decode('utf-8'))
if scope and set(scope) - set(code.scope): # too broad scope
self.assertEqual(response.status_code, 400) # Bad Request
self.assertIn('error', response_dic2)
self.assertEqual(response_dic2['error'], 'invalid_scope')
return # No more checks
id_token2 = JWS().verify_compact(response_dic2['id_token'].encode('utf-8'), SIGKEYS)
if scope and 'email' not in scope: # narrowed scope The auth
# The auth code request had email in scope, so it should be
# in the first id token
self.assertIn('email', id_token1)
# but the refresh request had no email in scope
self.assertNotIn('email', id_token2, 'email was not requested')
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['iat'], int(start_time))
self.assertEqual(id_token2['iat'], int(start_time + 600))
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_client_redirect_uri(self):
"""
Validate that client redirect URIs exactly match registered
URIs, and that unregistered URIs or URIs with query parameters are rejected.
See http://openid.net/specs/openid-connect-core-1_0.html#AuthRequest and
http://openid.net/specs/openid-connect-core-1_0.html#HybridTokenRequest.
"""
SIGKEYS = self._get_keys()
code = self._create_code()
post_data = self._auth_code_post_data(code=code.code)
# Unregistered URI
post_data['redirect_uri'] = 'http://invalid.example.org'
response = self._post_request(post_data)
self.assertIn('invalid_client', response.content.decode('utf-8'))
# Registered URI, but with query string appended
post_data['redirect_uri'] = self.client.default_redirect_uri + '?foo=bar'
response = self._post_request(post_data)
self.assertIn('invalid_client', response.content.decode('utf-8'))
# Registered URI
post_data['redirect_uri'] = self.client.default_redirect_uri
response = self._post_request(post_data)
self.assertNotIn('invalid_client', 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']
response = self._post_request(basicauth_data, self._password_grant_auth_header())
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_id_token_contains_at_hash(self):
"""
If access_token is included, the id_token SHOULD contain an at_hash.
"""
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.assertTrue(id_token.get('at_hash'))
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)
@override_settings(OIDC_IDTOKEN_SUB_GENERATOR='oidc_provider.tests.app.utils.fake_sub_generator')
def test_custom_sub_generator(self):
"""
Test custom function for setting OIDC_IDTOKEN_SUB_GENERATOR.
"""
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('sub'), self.user.email)
@override_settings(OIDC_IDTOKEN_PROCESSING_HOOK='oidc_provider.tests.app.utils.fake_idtoken_processing_hook')
def test_additional_idtoken_processing_hook(self):
"""
Test custom function for setting OIDC_IDTOKEN_PROCESSING_HOOK.
"""
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('test_idtoken_processing_hook'), FAKE_RANDOM_STRING)
self.assertEqual(id_token.get('test_idtoken_processing_hook_user_email'), self.user.email)
@override_settings(
OIDC_IDTOKEN_PROCESSING_HOOK=(
'oidc_provider.tests.app.utils.fake_idtoken_processing_hook',
)
)
def test_additional_idtoken_processing_hook_one_element_in_tuple(self):
"""
Test custom function for setting OIDC_IDTOKEN_PROCESSING_HOOK.
"""
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('test_idtoken_processing_hook'), FAKE_RANDOM_STRING)
self.assertEqual(id_token.get('test_idtoken_processing_hook_user_email'), self.user.email)
@override_settings(
OIDC_IDTOKEN_PROCESSING_HOOK=[
'oidc_provider.tests.app.utils.fake_idtoken_processing_hook',
]
)
def test_additional_idtoken_processing_hook_one_element_in_list(self):
"""
Test custom function for setting OIDC_IDTOKEN_PROCESSING_HOOK.
"""
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('test_idtoken_processing_hook'), FAKE_RANDOM_STRING)
self.assertEqual(id_token.get('test_idtoken_processing_hook_user_email'), self.user.email)
@override_settings(
OIDC_IDTOKEN_PROCESSING_HOOK=[
'oidc_provider.tests.app.utils.fake_idtoken_processing_hook',
'oidc_provider.tests.app.utils.fake_idtoken_processing_hook2',
]
)
def test_additional_idtoken_processing_hook_two_elements_in_list(self):
"""
Test custom function for setting OIDC_IDTOKEN_PROCESSING_HOOK.
"""
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('test_idtoken_processing_hook'), FAKE_RANDOM_STRING)
self.assertEqual(id_token.get('test_idtoken_processing_hook_user_email'), self.user.email)
self.assertEqual(id_token.get('test_idtoken_processing_hook2'), FAKE_RANDOM_STRING)
self.assertEqual(id_token.get('test_idtoken_processing_hook_user_email2'), self.user.email)
@override_settings(
OIDC_IDTOKEN_PROCESSING_HOOK=(
'oidc_provider.tests.app.utils.fake_idtoken_processing_hook',
'oidc_provider.tests.app.utils.fake_idtoken_processing_hook2',
)
)
def test_additional_idtoken_processing_hook_two_elements_in_tuple(self):
"""
Test custom function for setting OIDC_IDTOKEN_PROCESSING_HOOK.
"""
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('test_idtoken_processing_hook'), FAKE_RANDOM_STRING)
self.assertEqual(id_token.get('test_idtoken_processing_hook_user_email'), self.user.email)
self.assertEqual(id_token.get('test_idtoken_processing_hook2'), FAKE_RANDOM_STRING)
self.assertEqual(id_token.get('test_idtoken_processing_hook_user_email2'), self.user.email)
def test_pkce_parameters(self):
"""
Test Proof Key for Code Exchange by OAuth Public Clients.
https://tools.ietf.org/html/rfc7636
"""
code = create_code(user=self.user, client=self.client,
scope=['openid', 'email'], nonce=FAKE_NONCE, is_authentication=True,
code_challenge=FAKE_CODE_CHALLENGE, code_challenge_method='S256')
code.save()
post_data = self._auth_code_post_data(code=code.code)
# Add parameters.
post_data['code_verifier'] = FAKE_CODE_VERIFIER
response = self._post_request(post_data)
response_dic = json.loads(response.content.decode('utf-8'))