django-rest-framework/tests/test_authentication.py
Tom Christie 0dec36eb41 Version 3.5 (#4525)
* Start test case

* Added 'requests' test client

* Address typos

* Graceful fallback if requests is not installed.

* Add cookie support

* Tests for auth and CSRF

* Py3 compat

* py3 compat

* py3 compat

* Add get_requests_client

* Added SchemaGenerator.should_include_link

* add settings for html cutoff on related fields

* Router doesn't work if prefix is blank, though project urls.py handles prefix

* Fix Django 1.10 to-many deprecation

* Add django.core.urlresolvers compatibility

* Update django-filter & django-guardian

* Check for empty router prefix; adjust URL accordingly

It's easiest to fix this issue after we have made the regex.  To try
to fix it before would require doing something different for List vs
Detail, which means we'd have to know which type of url we're
constructing before acting accordingly.

* Fix misc django deprecations

* Use TOC extension instead of header

* Fix deprecations for py3k

* Add py3k compatibility to is_simple_callable

* Add is_simple_callable tests

* Drop python 3.2 support (EOL, Dropped by Django)

* schema_renderers= should *set* the renderers, not append to them.

* API client (#4424)

* Fix release notes

* Add note about 'User account is disabled.' vs 'Unable to log in'

* Clean up schema generation (#4527)

* Handle multiple methods on custom action (#4529)

* RequestsClient, CoreAPIClient

* exclude_from_schema

* Added 'get_schema_view()' shortcut

* Added schema descriptions

* Better descriptions for schemas

* Add type annotation to schema generation

* Coerce schema 'pk' in path to actual field name

* Deprecations move into assertion errors

* Use get_schema_view in tests

* Updte CoreJSON media type

* Handle schema structure correctly when path prefixs exist. Closes #4401

* Add PendingDeprecation to Router schema generation.

* Added SCHEMA_COERCE_PATH_PK and SCHEMA_COERCE_METHOD_NAMES

* Renamed and documented 'get_schema_fields' interface.
2016-10-10 13:03:46 +01:00

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# coding: utf-8
from __future__ import unicode_literals
import base64
from django.conf.urls import include, url
from django.contrib.auth.models import User
from django.db import models
from django.http import HttpResponse
from django.test import TestCase, override_settings
from django.utils import six
from rest_framework import (
HTTP_HEADER_ENCODING, exceptions, permissions, renderers, status
)
from rest_framework.authentication import (
BaseAuthentication, BasicAuthentication, SessionAuthentication,
TokenAuthentication
)
from rest_framework.authtoken.models import Token
from rest_framework.authtoken.views import obtain_auth_token
from rest_framework.compat import is_authenticated
from rest_framework.response import Response
from rest_framework.test import APIClient, APIRequestFactory
from rest_framework.views import APIView
factory = APIRequestFactory()
class CustomToken(models.Model):
key = models.CharField(max_length=40, primary_key=True)
user = models.OneToOneField(User, on_delete=models.CASCADE)
class CustomTokenAuthentication(TokenAuthentication):
model = CustomToken
class CustomKeywordTokenAuthentication(TokenAuthentication):
keyword = 'Bearer'
class MockView(APIView):
permission_classes = (permissions.IsAuthenticated,)
def get(self, request):
return HttpResponse({'a': 1, 'b': 2, 'c': 3})
def post(self, request):
return HttpResponse({'a': 1, 'b': 2, 'c': 3})
def put(self, request):
return HttpResponse({'a': 1, 'b': 2, 'c': 3})
urlpatterns = [
url(
r'^session/$',
MockView.as_view(authentication_classes=[SessionAuthentication])
),
url(
r'^basic/$',
MockView.as_view(authentication_classes=[BasicAuthentication])
),
url(
r'^token/$',
MockView.as_view(authentication_classes=[TokenAuthentication])
),
url(
r'^customtoken/$',
MockView.as_view(authentication_classes=[CustomTokenAuthentication])
),
url(
r'^customkeywordtoken/$',
MockView.as_view(
authentication_classes=[CustomKeywordTokenAuthentication]
)
),
url(r'^auth-token/$', obtain_auth_token),
url(r'^auth/', include('rest_framework.urls', namespace='rest_framework')),
]
@override_settings(ROOT_URLCONF='tests.test_authentication')
class BasicAuthTests(TestCase):
"""Basic authentication"""
def setUp(self):
self.csrf_client = APIClient(enforce_csrf_checks=True)
self.username = 'john'
self.email = 'lennon@thebeatles.com'
self.password = 'password'
self.user = User.objects.create_user(
self.username, self.email, self.password
)
def test_post_form_passing_basic_auth(self):
"""Ensure POSTing json over basic auth with correct credentials passes and does not require CSRF"""
credentials = ('%s:%s' % (self.username, self.password))
base64_credentials = base64.b64encode(
credentials.encode(HTTP_HEADER_ENCODING)
).decode(HTTP_HEADER_ENCODING)
auth = 'Basic %s' % base64_credentials
response = self.csrf_client.post(
'/basic/',
{'example': 'example'},
HTTP_AUTHORIZATION=auth
)
self.assertEqual(response.status_code, status.HTTP_200_OK)
def test_post_json_passing_basic_auth(self):
"""Ensure POSTing form over basic auth with correct credentials passes and does not require CSRF"""
credentials = ('%s:%s' % (self.username, self.password))
base64_credentials = base64.b64encode(
credentials.encode(HTTP_HEADER_ENCODING)
).decode(HTTP_HEADER_ENCODING)
auth = 'Basic %s' % base64_credentials
response = self.csrf_client.post(
'/basic/',
{'example': 'example'},
format='json',
HTTP_AUTHORIZATION=auth
)
self.assertEqual(response.status_code, status.HTTP_200_OK)
def test_regression_handle_bad_base64_basic_auth_header(self):
"""Ensure POSTing JSON over basic auth with incorrectly padded Base64 string is handled correctly"""
# regression test for issue in 'rest_framework.authentication.BasicAuthentication.authenticate'
# https://github.com/tomchristie/django-rest-framework/issues/4089
auth = 'Basic =a='
response = self.csrf_client.post(
'/basic/',
{'example': 'example'},
format='json',
HTTP_AUTHORIZATION=auth
)
self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
def test_post_form_failing_basic_auth(self):
"""Ensure POSTing form over basic auth without correct credentials fails"""
response = self.csrf_client.post('/basic/', {'example': 'example'})
self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
def test_post_json_failing_basic_auth(self):
"""Ensure POSTing json over basic auth without correct credentials fails"""
response = self.csrf_client.post(
'/basic/',
{'example': 'example'},
format='json'
)
self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
self.assertEqual(response['WWW-Authenticate'], 'Basic realm="api"')
@override_settings(ROOT_URLCONF='tests.test_authentication')
class SessionAuthTests(TestCase):
"""User session authentication"""
def setUp(self):
self.csrf_client = APIClient(enforce_csrf_checks=True)
self.non_csrf_client = APIClient(enforce_csrf_checks=False)
self.username = 'john'
self.email = 'lennon@thebeatles.com'
self.password = 'password'
self.user = User.objects.create_user(
self.username, self.email, self.password
)
def tearDown(self):
self.csrf_client.logout()
def test_login_view_renders_on_get(self):
"""
Ensure the login template renders for a basic GET.
cf. [#1810](https://github.com/tomchristie/django-rest-framework/pull/1810)
"""
response = self.csrf_client.get('/auth/login/')
self.assertContains(
response, '<label for="id_username">Username:</label>'
)
def test_post_form_session_auth_failing_csrf(self):
"""
Ensure POSTing form over session authentication without CSRF token fails.
"""
self.csrf_client.login(username=self.username, password=self.password)
response = self.csrf_client.post('/session/', {'example': 'example'})
self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
def test_post_form_session_auth_passing(self):
"""
Ensure POSTing form over session authentication with logged in
user and CSRF token passes.
"""
self.non_csrf_client.login(
username=self.username, password=self.password
)
response = self.non_csrf_client.post(
'/session/', {'example': 'example'}
)
self.assertEqual(response.status_code, status.HTTP_200_OK)
def test_put_form_session_auth_passing(self):
"""
Ensure PUTting form over session authentication with
logged in user and CSRF token passes.
"""
self.non_csrf_client.login(
username=self.username, password=self.password
)
response = self.non_csrf_client.put(
'/session/', {'example': 'example'}
)
self.assertEqual(response.status_code, status.HTTP_200_OK)
def test_post_form_session_auth_failing(self):
"""
Ensure POSTing form over session authentication without logged in user fails.
"""
response = self.csrf_client.post('/session/', {'example': 'example'})
self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
class BaseTokenAuthTests(object):
"""Token authentication"""
model = None
path = None
header_prefix = 'Token '
def setUp(self):
self.csrf_client = APIClient(enforce_csrf_checks=True)
self.username = 'john'
self.email = 'lennon@thebeatles.com'
self.password = 'password'
self.user = User.objects.create_user(
self.username, self.email, self.password
)
self.key = 'abcd1234'
self.token = self.model.objects.create(key=self.key, user=self.user)
def test_post_form_passing_token_auth(self):
"""
Ensure POSTing json over token auth with correct
credentials passes and does not require CSRF
"""
auth = self.header_prefix + self.key
response = self.csrf_client.post(
self.path, {'example': 'example'}, HTTP_AUTHORIZATION=auth
)
self.assertEqual(response.status_code, status.HTTP_200_OK)
def test_fail_post_form_passing_nonexistent_token_auth(self):
# use a nonexistent token key
auth = self.header_prefix + 'wxyz6789'
response = self.csrf_client.post(
self.path, {'example': 'example'}, HTTP_AUTHORIZATION=auth
)
self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
def test_fail_post_form_passing_invalid_token_auth(self):
# add an 'invalid' unicode character
auth = self.header_prefix + self.key + "¸"
response = self.csrf_client.post(
self.path, {'example': 'example'}, HTTP_AUTHORIZATION=auth
)
self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
def test_post_json_passing_token_auth(self):
"""
Ensure POSTing form over token auth with correct
credentials passes and does not require CSRF
"""
auth = self.header_prefix + self.key
response = self.csrf_client.post(
self.path, {'example': 'example'},
format='json', HTTP_AUTHORIZATION=auth
)
self.assertEqual(response.status_code, status.HTTP_200_OK)
def test_post_json_makes_one_db_query(self):
"""
Ensure that authenticating a user using a
token performs only one DB query
"""
auth = self.header_prefix + self.key
def func_to_test():
return self.csrf_client.post(
self.path, {'example': 'example'},
format='json', HTTP_AUTHORIZATION=auth
)
self.assertNumQueries(1, func_to_test)
def test_post_form_failing_token_auth(self):
"""
Ensure POSTing form over token auth without correct credentials fails
"""
response = self.csrf_client.post(self.path, {'example': 'example'})
self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
def test_post_json_failing_token_auth(self):
"""
Ensure POSTing json over token auth without correct credentials fails
"""
response = self.csrf_client.post(
self.path, {'example': 'example'}, format='json'
)
self.assertEqual(response.status_code, status.HTTP_401_UNAUTHORIZED)
@override_settings(ROOT_URLCONF='tests.test_authentication')
class TokenAuthTests(BaseTokenAuthTests, TestCase):
model = Token
path = '/token/'
def test_token_has_auto_assigned_key_if_none_provided(self):
"""Ensure creating a token with no key will auto-assign a key"""
self.token.delete()
token = self.model.objects.create(user=self.user)
self.assertTrue(bool(token.key))
def test_generate_key_returns_string(self):
"""Ensure generate_key returns a string"""
token = self.model()
key = token.generate_key()
self.assertTrue(isinstance(key, six.string_types))
def test_token_login_json(self):
"""Ensure token login view using JSON POST works."""
client = APIClient(enforce_csrf_checks=True)
response = client.post(
'/auth-token/',
{'username': self.username, 'password': self.password},
format='json'
)
self.assertEqual(response.status_code, status.HTTP_200_OK)
self.assertEqual(response.data['token'], self.key)
def test_token_login_json_bad_creds(self):
"""
Ensure token login view using JSON POST fails if
bad credentials are used
"""
client = APIClient(enforce_csrf_checks=True)
response = client.post(
'/auth-token/',
{'username': self.username, 'password': "badpass"},
format='json'
)
self.assertEqual(response.status_code, 400)
def test_token_login_json_missing_fields(self):
"""Ensure token login view using JSON POST fails if missing fields."""
client = APIClient(enforce_csrf_checks=True)
response = client.post('/auth-token/',
{'username': self.username}, format='json')
self.assertEqual(response.status_code, 400)
def test_token_login_form(self):
"""Ensure token login view using form POST works."""
client = APIClient(enforce_csrf_checks=True)
response = client.post('/auth-token/',
{'username': self.username, 'password': self.password})
self.assertEqual(response.status_code, status.HTTP_200_OK)
self.assertEqual(response.data['token'], self.key)
@override_settings(ROOT_URLCONF='tests.test_authentication')
class CustomTokenAuthTests(BaseTokenAuthTests, TestCase):
model = CustomToken
path = '/customtoken/'
@override_settings(ROOT_URLCONF='tests.test_authentication')
class CustomKeywordTokenAuthTests(BaseTokenAuthTests, TestCase):
model = Token
path = '/customkeywordtoken/'
header_prefix = 'Bearer '
class IncorrectCredentialsTests(TestCase):
def test_incorrect_credentials(self):
"""
If a request contains bad authentication credentials, then
authentication should run and error, even if no permissions
are set on the view.
"""
class IncorrectCredentialsAuth(BaseAuthentication):
def authenticate(self, request):
raise exceptions.AuthenticationFailed('Bad credentials')
request = factory.get('/')
view = MockView.as_view(
authentication_classes=(IncorrectCredentialsAuth,),
permission_classes=()
)
response = view(request)
self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
self.assertEqual(response.data, {'detail': 'Bad credentials'})
class FailingAuthAccessedInRenderer(TestCase):
def setUp(self):
class AuthAccessingRenderer(renderers.BaseRenderer):
media_type = 'text/plain'
format = 'txt'
def render(self, data, media_type=None, renderer_context=None):
request = renderer_context['request']
if is_authenticated(request.user):
return b'authenticated'
return b'not authenticated'
class FailingAuth(BaseAuthentication):
def authenticate(self, request):
raise exceptions.AuthenticationFailed('authentication failed')
class ExampleView(APIView):
authentication_classes = (FailingAuth,)
renderer_classes = (AuthAccessingRenderer,)
def get(self, request):
return Response({'foo': 'bar'})
self.view = ExampleView.as_view()
def test_failing_auth_accessed_in_renderer(self):
"""
When authentication fails the renderer should still be able to access
`request.user` without raising an exception. Particularly relevant
to HTML responses that might reasonably access `request.user`.
"""
request = factory.get('/')
response = self.view(request)
content = response.render().content
self.assertEqual(content, b'not authenticated')
class NoAuthenticationClassesTests(TestCase):
def test_permission_message_with_no_authentication_classes(self):
"""
An unauthenticated request made against a view that contains no
`authentication_classes` but do contain `permissions_classes` the error
code returned should be 403 with the exception's message.
"""
class DummyPermission(permissions.BasePermission):
message = 'Dummy permission message'
def has_permission(self, request, view):
return False
request = factory.get('/')
view = MockView.as_view(
authentication_classes=(),
permission_classes=(DummyPermission,),
)
response = view(request)
self.assertEqual(response.status_code,
status.HTTP_403_FORBIDDEN)
self.assertEqual(response.data, {'detail': 'Dummy permission message'})