mirror of https://github.com/django/django.git
351 lines
14 KiB
Python
351 lines
14 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
from django.test import TestCase
|
|
from django.http import HttpRequest, HttpResponse
|
|
from django.middleware.csrf import CsrfMiddleware, CsrfViewMiddleware
|
|
from django.views.decorators.csrf import csrf_exempt, csrf_view_exempt
|
|
from django.core.context_processors import csrf
|
|
from django.contrib.sessions.middleware import SessionMiddleware
|
|
from django.utils.importlib import import_module
|
|
from django.conf import settings
|
|
from django.template import RequestContext, Template
|
|
|
|
# Response/views used for CsrfResponseMiddleware and CsrfViewMiddleware tests
|
|
def post_form_response():
|
|
resp = HttpResponse(content="""
|
|
<html><body><form method="post"><input type="text" /></form></body></html>
|
|
""", mimetype="text/html")
|
|
return resp
|
|
|
|
def post_form_response_non_html():
|
|
resp = post_form_response()
|
|
resp["Content-Type"] = "application/xml"
|
|
return resp
|
|
|
|
def post_form_view(request):
|
|
"""A view that returns a POST form (without a token)"""
|
|
return post_form_response()
|
|
|
|
# Response/views used for template tag tests
|
|
def _token_template():
|
|
return Template("{% csrf_token %}")
|
|
|
|
def _render_csrf_token_template(req):
|
|
context = RequestContext(req, processors=[csrf])
|
|
template = _token_template()
|
|
return template.render(context)
|
|
|
|
def token_view(request):
|
|
"""A view that uses {% csrf_token %}"""
|
|
return HttpResponse(_render_csrf_token_template(request))
|
|
|
|
def non_token_view_using_request_processor(request):
|
|
"""
|
|
A view that doesn't use the token, but does use the csrf view processor.
|
|
"""
|
|
context = RequestContext(request, processors=[csrf])
|
|
template = Template("")
|
|
return HttpResponse(template.render(context))
|
|
|
|
class TestingHttpRequest(HttpRequest):
|
|
"""
|
|
A version of HttpRequest that allows us to change some things
|
|
more easily
|
|
"""
|
|
def is_secure(self):
|
|
return getattr(self, '_is_secure', False)
|
|
|
|
class CsrfMiddlewareTest(TestCase):
|
|
_csrf_id = "1"
|
|
|
|
# This is a valid session token for this ID and secret key. This was generated using
|
|
# the old code that we're to be backwards-compatible with. Don't use the CSRF code
|
|
# to generate this hash, or we're merely testing the code against itself and not
|
|
# checking backwards-compatibility. This is also the output of (echo -n test1 | md5sum).
|
|
_session_token = "5a105e8b9d40e1329780d62ea2265d8a"
|
|
_session_id = "1"
|
|
_secret_key_for_session_test= "test"
|
|
|
|
def _get_GET_no_csrf_cookie_request(self):
|
|
return TestingHttpRequest()
|
|
|
|
def _get_GET_csrf_cookie_request(self):
|
|
req = TestingHttpRequest()
|
|
req.COOKIES[settings.CSRF_COOKIE_NAME] = self._csrf_id
|
|
return req
|
|
|
|
def _get_POST_csrf_cookie_request(self):
|
|
req = self._get_GET_csrf_cookie_request()
|
|
req.method = "POST"
|
|
return req
|
|
|
|
def _get_POST_no_csrf_cookie_request(self):
|
|
req = self._get_GET_no_csrf_cookie_request()
|
|
req.method = "POST"
|
|
return req
|
|
|
|
def _get_POST_request_with_token(self):
|
|
req = self._get_POST_csrf_cookie_request()
|
|
req.POST['csrfmiddlewaretoken'] = self._csrf_id
|
|
return req
|
|
|
|
def _get_POST_session_request_with_token(self):
|
|
req = self._get_POST_no_csrf_cookie_request()
|
|
req.COOKIES[settings.SESSION_COOKIE_NAME] = self._session_id
|
|
req.POST['csrfmiddlewaretoken'] = self._session_token
|
|
return req
|
|
|
|
def _get_POST_session_request_no_token(self):
|
|
req = self._get_POST_no_csrf_cookie_request()
|
|
req.COOKIES[settings.SESSION_COOKIE_NAME] = self._session_id
|
|
return req
|
|
|
|
def _check_token_present(self, response, csrf_id=None):
|
|
self.assertContains(response, "name='csrfmiddlewaretoken' value='%s'" % (csrf_id or self._csrf_id))
|
|
|
|
# Check the post processing and outgoing cookie
|
|
def test_process_response_no_csrf_cookie(self):
|
|
"""
|
|
When no prior CSRF cookie exists, check that the cookie is created and a
|
|
token is inserted.
|
|
"""
|
|
req = self._get_GET_no_csrf_cookie_request()
|
|
CsrfMiddleware().process_view(req, post_form_view, (), {})
|
|
|
|
resp = post_form_response()
|
|
resp_content = resp.content # needed because process_response modifies resp
|
|
resp2 = CsrfMiddleware().process_response(req, resp)
|
|
|
|
csrf_cookie = resp2.cookies.get(settings.CSRF_COOKIE_NAME, False)
|
|
self.assertNotEqual(csrf_cookie, False)
|
|
self.assertNotEqual(resp_content, resp2.content)
|
|
self._check_token_present(resp2, csrf_cookie.value)
|
|
# Check the Vary header got patched correctly
|
|
self.assert_('Cookie' in resp2.get('Vary',''))
|
|
|
|
def test_process_response_for_exempt_view(self):
|
|
"""
|
|
Check that a view decorated with 'csrf_view_exempt' is still
|
|
post-processed to add the CSRF token.
|
|
"""
|
|
req = self._get_GET_no_csrf_cookie_request()
|
|
CsrfMiddleware().process_view(req, csrf_view_exempt(post_form_view), (), {})
|
|
|
|
resp = post_form_response()
|
|
resp_content = resp.content # needed because process_response modifies resp
|
|
resp2 = CsrfMiddleware().process_response(req, resp)
|
|
|
|
csrf_cookie = resp2.cookies.get(settings.CSRF_COOKIE_NAME, False)
|
|
self.assertNotEqual(csrf_cookie, False)
|
|
self.assertNotEqual(resp_content, resp2.content)
|
|
self._check_token_present(resp2, csrf_cookie.value)
|
|
|
|
def test_process_response_no_csrf_cookie_view_only_get_token_used(self):
|
|
"""
|
|
When no prior CSRF cookie exists, check that the cookie is created, even
|
|
if only CsrfViewMiddleware is used.
|
|
"""
|
|
# This is checking that CsrfViewMiddleware has the cookie setting
|
|
# code. Most of the other tests use CsrfMiddleware.
|
|
req = self._get_GET_no_csrf_cookie_request()
|
|
# token_view calls get_token() indirectly
|
|
CsrfViewMiddleware().process_view(req, token_view, (), {})
|
|
resp = token_view(req)
|
|
resp2 = CsrfViewMiddleware().process_response(req, resp)
|
|
|
|
csrf_cookie = resp2.cookies.get(settings.CSRF_COOKIE_NAME, False)
|
|
self.assertNotEqual(csrf_cookie, False)
|
|
|
|
def test_process_response_get_token_not_used(self):
|
|
"""
|
|
Check that if get_token() is not called, the view middleware does not
|
|
add a cookie.
|
|
"""
|
|
# This is important to make pages cacheable. Pages which do call
|
|
# get_token(), assuming they use the token, are not cacheable because
|
|
# the token is specific to the user
|
|
req = self._get_GET_no_csrf_cookie_request()
|
|
# non_token_view_using_request_processor does not call get_token(), but
|
|
# does use the csrf request processor. By using this, we are testing
|
|
# that the view processor is properly lazy and doesn't call get_token()
|
|
# until needed.
|
|
CsrfViewMiddleware().process_view(req, non_token_view_using_request_processor, (), {})
|
|
resp = non_token_view_using_request_processor(req)
|
|
resp2 = CsrfViewMiddleware().process_response(req, resp)
|
|
|
|
csrf_cookie = resp2.cookies.get(settings.CSRF_COOKIE_NAME, False)
|
|
self.assertEqual(csrf_cookie, False)
|
|
|
|
def test_process_response_existing_csrf_cookie(self):
|
|
"""
|
|
Check that the token is inserted when a prior CSRF cookie exists
|
|
"""
|
|
req = self._get_GET_csrf_cookie_request()
|
|
CsrfMiddleware().process_view(req, post_form_view, (), {})
|
|
|
|
resp = post_form_response()
|
|
resp_content = resp.content # needed because process_response modifies resp
|
|
resp2 = CsrfMiddleware().process_response(req, resp)
|
|
self.assertNotEqual(resp_content, resp2.content)
|
|
self._check_token_present(resp2)
|
|
|
|
def test_process_response_non_html(self):
|
|
"""
|
|
Check the the post-processor does nothing for content-types not in _HTML_TYPES.
|
|
"""
|
|
req = self._get_GET_no_csrf_cookie_request()
|
|
CsrfMiddleware().process_view(req, post_form_view, (), {})
|
|
resp = post_form_response_non_html()
|
|
resp_content = resp.content # needed because process_response modifies resp
|
|
resp2 = CsrfMiddleware().process_response(req, resp)
|
|
self.assertEquals(resp_content, resp2.content)
|
|
|
|
def test_process_response_exempt_view(self):
|
|
"""
|
|
Check that no post processing is done for an exempt view
|
|
"""
|
|
req = self._get_POST_csrf_cookie_request()
|
|
resp = csrf_exempt(post_form_view)(req)
|
|
resp_content = resp.content
|
|
resp2 = CsrfMiddleware().process_response(req, resp)
|
|
self.assertEquals(resp_content, resp2.content)
|
|
|
|
# Check the request processing
|
|
def test_process_request_no_session_no_csrf_cookie(self):
|
|
"""
|
|
Check that if neither a CSRF cookie nor a session cookie are present,
|
|
the middleware rejects the incoming request. This will stop login CSRF.
|
|
"""
|
|
req = self._get_POST_no_csrf_cookie_request()
|
|
req2 = CsrfMiddleware().process_view(req, post_form_view, (), {})
|
|
self.assertEquals(403, req2.status_code)
|
|
|
|
def test_process_request_csrf_cookie_no_token(self):
|
|
"""
|
|
Check that if a CSRF cookie is present but no token, the middleware
|
|
rejects the incoming request.
|
|
"""
|
|
req = self._get_POST_csrf_cookie_request()
|
|
req2 = CsrfMiddleware().process_view(req, post_form_view, (), {})
|
|
self.assertEquals(403, req2.status_code)
|
|
|
|
def test_process_request_csrf_cookie_and_token(self):
|
|
"""
|
|
Check that if both a cookie and a token is present, the middleware lets it through.
|
|
"""
|
|
req = self._get_POST_request_with_token()
|
|
req2 = CsrfMiddleware().process_view(req, post_form_view, (), {})
|
|
self.assertEquals(None, req2)
|
|
|
|
def test_process_request_session_cookie_no_csrf_cookie_token(self):
|
|
"""
|
|
When no CSRF cookie exists, but the user has a session, check that a token
|
|
using the session cookie as a legacy CSRF cookie is accepted.
|
|
"""
|
|
orig_secret_key = settings.SECRET_KEY
|
|
settings.SECRET_KEY = self._secret_key_for_session_test
|
|
try:
|
|
req = self._get_POST_session_request_with_token()
|
|
req2 = CsrfMiddleware().process_view(req, post_form_view, (), {})
|
|
self.assertEquals(None, req2)
|
|
finally:
|
|
settings.SECRET_KEY = orig_secret_key
|
|
|
|
def test_process_request_session_cookie_no_csrf_cookie_no_token(self):
|
|
"""
|
|
Check that if a session cookie is present but no token and no CSRF cookie,
|
|
the request is rejected.
|
|
"""
|
|
req = self._get_POST_session_request_no_token()
|
|
req2 = CsrfMiddleware().process_view(req, post_form_view, (), {})
|
|
self.assertEquals(403, req2.status_code)
|
|
|
|
def test_process_request_csrf_cookie_no_token_exempt_view(self):
|
|
"""
|
|
Check that if a CSRF cookie is present and no token, but the csrf_exempt
|
|
decorator has been applied to the view, the middleware lets it through
|
|
"""
|
|
req = self._get_POST_csrf_cookie_request()
|
|
req2 = CsrfMiddleware().process_view(req, csrf_exempt(post_form_view), (), {})
|
|
self.assertEquals(None, req2)
|
|
|
|
def test_ajax_exemption(self):
|
|
"""
|
|
Check that AJAX requests are automatically exempted.
|
|
"""
|
|
req = self._get_POST_csrf_cookie_request()
|
|
req.META['HTTP_X_REQUESTED_WITH'] = 'XMLHttpRequest'
|
|
req2 = CsrfMiddleware().process_view(req, post_form_view, (), {})
|
|
self.assertEquals(None, req2)
|
|
|
|
# Tests for the template tag method
|
|
def test_token_node_no_csrf_cookie(self):
|
|
"""
|
|
Check that CsrfTokenNode works when no CSRF cookie is set
|
|
"""
|
|
req = self._get_GET_no_csrf_cookie_request()
|
|
resp = token_view(req)
|
|
self.assertEquals(u"", resp.content)
|
|
|
|
def test_token_node_with_csrf_cookie(self):
|
|
"""
|
|
Check that CsrfTokenNode works when a CSRF cookie is set
|
|
"""
|
|
req = self._get_GET_csrf_cookie_request()
|
|
CsrfViewMiddleware().process_view(req, token_view, (), {})
|
|
resp = token_view(req)
|
|
self._check_token_present(resp)
|
|
|
|
def test_get_token_for_exempt_view(self):
|
|
"""
|
|
Check that get_token still works for a view decorated with 'csrf_view_exempt'.
|
|
"""
|
|
req = self._get_GET_csrf_cookie_request()
|
|
CsrfViewMiddleware().process_view(req, csrf_view_exempt(token_view), (), {})
|
|
resp = token_view(req)
|
|
self._check_token_present(resp)
|
|
|
|
def test_token_node_with_new_csrf_cookie(self):
|
|
"""
|
|
Check that CsrfTokenNode works when a CSRF cookie is created by
|
|
the middleware (when one was not already present)
|
|
"""
|
|
req = self._get_GET_no_csrf_cookie_request()
|
|
CsrfViewMiddleware().process_view(req, token_view, (), {})
|
|
resp = token_view(req)
|
|
resp2 = CsrfViewMiddleware().process_response(req, resp)
|
|
csrf_cookie = resp2.cookies[settings.CSRF_COOKIE_NAME]
|
|
self._check_token_present(resp, csrf_id=csrf_cookie.value)
|
|
|
|
def test_response_middleware_without_view_middleware(self):
|
|
"""
|
|
Check that CsrfResponseMiddleware finishes without error if the view middleware
|
|
has not been called, as is the case if a request middleware returns a response.
|
|
"""
|
|
req = self._get_GET_no_csrf_cookie_request()
|
|
resp = post_form_view(req)
|
|
CsrfMiddleware().process_response(req, resp)
|
|
|
|
def test_https_bad_referer(self):
|
|
"""
|
|
Test that a POST HTTPS request with a bad referer is rejected
|
|
"""
|
|
req = self._get_POST_request_with_token()
|
|
req._is_secure = True
|
|
req.META['HTTP_HOST'] = 'www.example.com'
|
|
req.META['HTTP_REFERER'] = 'https://www.evil.org/somepage'
|
|
req2 = CsrfViewMiddleware().process_view(req, post_form_view, (), {})
|
|
self.assertNotEqual(None, req2)
|
|
self.assertEquals(403, req2.status_code)
|
|
|
|
def test_https_good_referer(self):
|
|
"""
|
|
Test that a POST HTTPS request with a good referer is accepted
|
|
"""
|
|
req = self._get_POST_request_with_token()
|
|
req._is_secure = True
|
|
req.META['HTTP_HOST'] = 'www.example.com'
|
|
req.META['HTTP_REFERER'] = 'https://www.example.com/somepage'
|
|
req2 = CsrfViewMiddleware().process_view(req, post_form_view, (), {})
|
|
self.assertEquals(None, req2)
|