mirror of https://github.com/django/django.git
874 lines
39 KiB
Python
874 lines
39 KiB
Python
import gzip
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import random
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import re
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import struct
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from io import BytesIO
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from urllib.parse import quote
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from django.conf import settings
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from django.core import mail
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from django.core.exceptions import PermissionDenied
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from django.http import (
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FileResponse, HttpRequest, HttpResponse, HttpResponseNotFound,
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HttpResponsePermanentRedirect, HttpResponseRedirect, StreamingHttpResponse,
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)
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from django.middleware.clickjacking import XFrameOptionsMiddleware
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from django.middleware.common import (
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BrokenLinkEmailsMiddleware, CommonMiddleware,
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)
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from django.middleware.gzip import GZipMiddleware
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from django.middleware.http import ConditionalGetMiddleware
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from django.test import RequestFactory, SimpleTestCase, override_settings
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int2byte = struct.Struct(">B").pack
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@override_settings(ROOT_URLCONF='middleware.urls')
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class CommonMiddlewareTest(SimpleTestCase):
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rf = RequestFactory()
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_have_slash(self):
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"""
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URLs with slashes should go unmolested.
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"""
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request = self.rf.get('/slash/')
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self.assertIsNone(CommonMiddleware().process_request(request))
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response = HttpResponseNotFound()
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self.assertEqual(CommonMiddleware().process_response(request, response), response)
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_slashless_resource(self):
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"""
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Matches to explicit slashless URLs should go unmolested.
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"""
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request = self.rf.get('/noslash')
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self.assertIsNone(CommonMiddleware().process_request(request))
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response = HttpResponse("Here's the text of the Web page.")
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self.assertEqual(CommonMiddleware().process_response(request, response), response)
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_slashless_unknown(self):
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"""
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APPEND_SLASH should not redirect to unknown resources.
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"""
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request = self.rf.get('/unknown')
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response = HttpResponseNotFound()
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self.assertEqual(CommonMiddleware().process_response(request, response), response)
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_redirect(self):
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"""
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APPEND_SLASH should redirect slashless URLs to a valid pattern.
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"""
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request = self.rf.get('/slash')
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r = CommonMiddleware().process_request(request)
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self.assertEqual(r.status_code, 301)
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_redirect_querystring(self):
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"""
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APPEND_SLASH should preserve querystrings when redirecting.
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"""
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request = self.rf.get('/slash?test=1')
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response = HttpResponseNotFound()
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r = CommonMiddleware().process_response(request, response)
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self.assertEqual(r.url, '/slash/?test=1')
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_redirect_querystring_have_slash(self):
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"""
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APPEND_SLASH should append slash to path when redirecting a request
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with a querystring ending with slash.
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"""
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request = self.rf.get('/slash?test=slash/')
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response = HttpResponseNotFound()
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r = CommonMiddleware().process_response(request, response)
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self.assertIsInstance(r, HttpResponsePermanentRedirect)
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self.assertEqual(r.url, '/slash/?test=slash/')
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@override_settings(APPEND_SLASH=True, DEBUG=True)
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def test_append_slash_no_redirect_on_POST_in_DEBUG(self):
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"""
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While in debug mode, an exception is raised with a warning
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when a failed attempt is made to POST, PUT, or PATCH to an URL which
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would normally be redirected to a slashed version.
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"""
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msg = "maintaining %s data. Change your form to point to testserver/slash/"
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request = self.rf.get('/slash')
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request.method = 'POST'
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response = HttpResponseNotFound()
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with self.assertRaisesMessage(RuntimeError, msg % request.method):
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CommonMiddleware().process_response(request, response)
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request = self.rf.get('/slash')
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request.method = 'PUT'
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with self.assertRaisesMessage(RuntimeError, msg % request.method):
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CommonMiddleware().process_response(request, response)
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request = self.rf.get('/slash')
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request.method = 'PATCH'
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with self.assertRaisesMessage(RuntimeError, msg % request.method):
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CommonMiddleware().process_response(request, response)
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@override_settings(APPEND_SLASH=False)
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def test_append_slash_disabled(self):
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"""
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Disabling append slash functionality should leave slashless URLs alone.
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"""
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request = self.rf.get('/slash')
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response = HttpResponseNotFound()
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self.assertEqual(CommonMiddleware().process_response(request, response), response)
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_quoted(self):
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"""
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URLs which require quoting should be redirected to their slash version.
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"""
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request = self.rf.get(quote('/needsquoting#'))
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response = HttpResponseNotFound()
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r = CommonMiddleware().process_response(request, response)
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self.assertEqual(r.status_code, 301)
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self.assertEqual(r.url, '/needsquoting%23/')
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_leading_slashes(self):
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"""
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Paths starting with two slashes are escaped to prevent open redirects.
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If there's a URL pattern that allows paths to start with two slashes, a
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request with path //evil.com must not redirect to //evil.com/ (appended
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slash) which is a schemaless absolute URL. The browser would navigate
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to evil.com/.
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"""
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# Use 4 slashes because of RequestFactory behavior.
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request = self.rf.get('////evil.com/security')
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response = HttpResponseNotFound()
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r = CommonMiddleware().process_request(request)
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self.assertEqual(r.status_code, 301)
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self.assertEqual(r.url, '/%2Fevil.com/security/')
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r = CommonMiddleware().process_response(request, response)
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self.assertEqual(r.status_code, 301)
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self.assertEqual(r.url, '/%2Fevil.com/security/')
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@override_settings(APPEND_SLASH=False, PREPEND_WWW=True)
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def test_prepend_www(self):
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request = self.rf.get('/path/')
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r = CommonMiddleware().process_request(request)
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self.assertEqual(r.status_code, 301)
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self.assertEqual(r.url, 'http://www.testserver/path/')
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@override_settings(APPEND_SLASH=True, PREPEND_WWW=True)
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def test_prepend_www_append_slash_have_slash(self):
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request = self.rf.get('/slash/')
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r = CommonMiddleware().process_request(request)
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self.assertEqual(r.status_code, 301)
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self.assertEqual(r.url, 'http://www.testserver/slash/')
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@override_settings(APPEND_SLASH=True, PREPEND_WWW=True)
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def test_prepend_www_append_slash_slashless(self):
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request = self.rf.get('/slash')
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r = CommonMiddleware().process_request(request)
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self.assertEqual(r.status_code, 301)
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self.assertEqual(r.url, 'http://www.testserver/slash/')
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# The following tests examine expected behavior given a custom URLconf that
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# overrides the default one through the request object.
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_have_slash_custom_urlconf(self):
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"""
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URLs with slashes should go unmolested.
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"""
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request = self.rf.get('/customurlconf/slash/')
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request.urlconf = 'middleware.extra_urls'
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self.assertIsNone(CommonMiddleware().process_request(request))
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response = HttpResponseNotFound()
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self.assertEqual(CommonMiddleware().process_response(request, response), response)
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_slashless_resource_custom_urlconf(self):
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"""
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Matches to explicit slashless URLs should go unmolested.
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"""
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request = self.rf.get('/customurlconf/noslash')
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request.urlconf = 'middleware.extra_urls'
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self.assertIsNone(CommonMiddleware().process_request(request))
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response = HttpResponse("Here's the text of the Web page.")
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self.assertEqual(CommonMiddleware().process_response(request, response), response)
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_slashless_unknown_custom_urlconf(self):
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"""
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APPEND_SLASH should not redirect to unknown resources.
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"""
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request = self.rf.get('/customurlconf/unknown')
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request.urlconf = 'middleware.extra_urls'
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self.assertIsNone(CommonMiddleware().process_request(request))
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response = HttpResponseNotFound()
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self.assertEqual(CommonMiddleware().process_response(request, response), response)
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_redirect_custom_urlconf(self):
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"""
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APPEND_SLASH should redirect slashless URLs to a valid pattern.
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"""
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request = self.rf.get('/customurlconf/slash')
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request.urlconf = 'middleware.extra_urls'
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response = HttpResponseNotFound()
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r = CommonMiddleware().process_response(request, response)
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self.assertIsNotNone(r, "CommonMiddleware failed to return APPEND_SLASH redirect using request.urlconf")
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self.assertEqual(r.status_code, 301)
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self.assertEqual(r.url, '/customurlconf/slash/')
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@override_settings(APPEND_SLASH=True, DEBUG=True)
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def test_append_slash_no_redirect_on_POST_in_DEBUG_custom_urlconf(self):
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"""
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While in debug mode, an exception is raised with a warning
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when a failed attempt is made to POST to an URL which would normally be
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redirected to a slashed version.
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"""
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request = self.rf.get('/customurlconf/slash')
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request.urlconf = 'middleware.extra_urls'
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request.method = 'POST'
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response = HttpResponseNotFound()
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with self.assertRaisesMessage(RuntimeError, 'end in a slash'):
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CommonMiddleware().process_response(request, response)
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@override_settings(APPEND_SLASH=False)
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def test_append_slash_disabled_custom_urlconf(self):
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"""
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Disabling append slash functionality should leave slashless URLs alone.
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"""
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request = self.rf.get('/customurlconf/slash')
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request.urlconf = 'middleware.extra_urls'
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self.assertIsNone(CommonMiddleware().process_request(request))
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response = HttpResponseNotFound()
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self.assertEqual(CommonMiddleware().process_response(request, response), response)
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@override_settings(APPEND_SLASH=True)
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def test_append_slash_quoted_custom_urlconf(self):
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"""
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URLs which require quoting should be redirected to their slash version.
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"""
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request = self.rf.get(quote('/customurlconf/needsquoting#'))
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request.urlconf = 'middleware.extra_urls'
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response = HttpResponseNotFound()
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r = CommonMiddleware().process_response(request, response)
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self.assertIsNotNone(r, "CommonMiddleware failed to return APPEND_SLASH redirect using request.urlconf")
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self.assertEqual(r.status_code, 301)
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self.assertEqual(r.url, '/customurlconf/needsquoting%23/')
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@override_settings(APPEND_SLASH=False, PREPEND_WWW=True)
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def test_prepend_www_custom_urlconf(self):
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request = self.rf.get('/customurlconf/path/')
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request.urlconf = 'middleware.extra_urls'
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r = CommonMiddleware().process_request(request)
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self.assertEqual(r.status_code, 301)
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self.assertEqual(r.url, 'http://www.testserver/customurlconf/path/')
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@override_settings(APPEND_SLASH=True, PREPEND_WWW=True)
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def test_prepend_www_append_slash_have_slash_custom_urlconf(self):
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request = self.rf.get('/customurlconf/slash/')
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request.urlconf = 'middleware.extra_urls'
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r = CommonMiddleware().process_request(request)
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self.assertEqual(r.status_code, 301)
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self.assertEqual(r.url, 'http://www.testserver/customurlconf/slash/')
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@override_settings(APPEND_SLASH=True, PREPEND_WWW=True)
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def test_prepend_www_append_slash_slashless_custom_urlconf(self):
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request = self.rf.get('/customurlconf/slash')
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request.urlconf = 'middleware.extra_urls'
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r = CommonMiddleware().process_request(request)
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self.assertEqual(r.status_code, 301)
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self.assertEqual(r.url, 'http://www.testserver/customurlconf/slash/')
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# Tests for the Content-Length header
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def test_content_length_header_added(self):
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response = HttpResponse('content')
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self.assertNotIn('Content-Length', response)
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response = CommonMiddleware().process_response(HttpRequest(), response)
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self.assertEqual(int(response['Content-Length']), len(response.content))
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def test_content_length_header_not_added_for_streaming_response(self):
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response = StreamingHttpResponse('content')
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self.assertNotIn('Content-Length', response)
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response = CommonMiddleware().process_response(HttpRequest(), response)
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self.assertNotIn('Content-Length', response)
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def test_content_length_header_not_changed(self):
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response = HttpResponse()
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bad_content_length = len(response.content) + 10
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response['Content-Length'] = bad_content_length
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response = CommonMiddleware().process_response(HttpRequest(), response)
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self.assertEqual(int(response['Content-Length']), bad_content_length)
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# Other tests
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@override_settings(DISALLOWED_USER_AGENTS=[re.compile(r'foo')])
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def test_disallowed_user_agents(self):
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request = self.rf.get('/slash')
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request.META['HTTP_USER_AGENT'] = 'foo'
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with self.assertRaisesMessage(PermissionDenied, 'Forbidden user agent'):
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CommonMiddleware().process_request(request)
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def test_non_ascii_query_string_does_not_crash(self):
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"""Regression test for #15152"""
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request = self.rf.get('/slash')
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request.META['QUERY_STRING'] = 'drink=café'
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r = CommonMiddleware().process_request(request)
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self.assertEqual(r.status_code, 301)
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def test_response_redirect_class(self):
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request = self.rf.get('/slash')
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response = HttpResponseNotFound()
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r = CommonMiddleware().process_response(request, response)
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self.assertEqual(r.status_code, 301)
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self.assertEqual(r.url, '/slash/')
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self.assertIsInstance(r, HttpResponsePermanentRedirect)
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def test_response_redirect_class_subclass(self):
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class MyCommonMiddleware(CommonMiddleware):
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response_redirect_class = HttpResponseRedirect
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request = self.rf.get('/slash')
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response = HttpResponseNotFound()
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r = MyCommonMiddleware().process_response(request, response)
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self.assertEqual(r.status_code, 302)
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self.assertEqual(r.url, '/slash/')
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self.assertIsInstance(r, HttpResponseRedirect)
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@override_settings(
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IGNORABLE_404_URLS=[re.compile(r'foo')],
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MANAGERS=[('PHD', 'PHB@dilbert.com')],
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)
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class BrokenLinkEmailsMiddlewareTest(SimpleTestCase):
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rf = RequestFactory()
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def setUp(self):
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self.req = self.rf.get('/regular_url/that/does/not/exist')
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self.resp = self.client.get(self.req.path)
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def test_404_error_reporting(self):
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self.req.META['HTTP_REFERER'] = '/another/url/'
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BrokenLinkEmailsMiddleware().process_response(self.req, self.resp)
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self.assertEqual(len(mail.outbox), 1)
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self.assertIn('Broken', mail.outbox[0].subject)
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def test_404_error_reporting_no_referer(self):
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BrokenLinkEmailsMiddleware().process_response(self.req, self.resp)
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self.assertEqual(len(mail.outbox), 0)
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def test_404_error_reporting_ignored_url(self):
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self.req.path = self.req.path_info = 'foo_url/that/does/not/exist'
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BrokenLinkEmailsMiddleware().process_response(self.req, self.resp)
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self.assertEqual(len(mail.outbox), 0)
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def test_custom_request_checker(self):
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class SubclassedMiddleware(BrokenLinkEmailsMiddleware):
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ignored_user_agent_patterns = (re.compile(r'Spider.*'), re.compile(r'Robot.*'))
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def is_ignorable_request(self, request, uri, domain, referer):
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'''Check user-agent in addition to normal checks.'''
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if super().is_ignorable_request(request, uri, domain, referer):
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return True
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user_agent = request.META['HTTP_USER_AGENT']
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return any(pattern.search(user_agent) for pattern in self.ignored_user_agent_patterns)
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self.req.META['HTTP_REFERER'] = '/another/url/'
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self.req.META['HTTP_USER_AGENT'] = 'Spider machine 3.4'
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SubclassedMiddleware().process_response(self.req, self.resp)
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self.assertEqual(len(mail.outbox), 0)
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self.req.META['HTTP_USER_AGENT'] = 'My user agent'
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SubclassedMiddleware().process_response(self.req, self.resp)
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self.assertEqual(len(mail.outbox), 1)
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def test_referer_equal_to_requested_url(self):
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"""
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Some bots set the referer to the current URL to avoid being blocked by
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an referer check (#25302).
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"""
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self.req.META['HTTP_REFERER'] = self.req.path
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BrokenLinkEmailsMiddleware().process_response(self.req, self.resp)
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self.assertEqual(len(mail.outbox), 0)
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# URL with scheme and domain should also be ignored
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self.req.META['HTTP_REFERER'] = 'http://testserver%s' % self.req.path
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BrokenLinkEmailsMiddleware().process_response(self.req, self.resp)
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self.assertEqual(len(mail.outbox), 0)
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# URL with a different scheme should be ignored as well because bots
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# tend to use http:// in referers even when browsing HTTPS websites.
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self.req.META['HTTP_X_PROTO'] = 'https'
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self.req.META['SERVER_PORT'] = 443
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with self.settings(SECURE_PROXY_SSL_HEADER=('HTTP_X_PROTO', 'https')):
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BrokenLinkEmailsMiddleware().process_response(self.req, self.resp)
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self.assertEqual(len(mail.outbox), 0)
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def test_referer_equal_to_requested_url_on_another_domain(self):
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self.req.META['HTTP_REFERER'] = 'http://anotherserver%s' % self.req.path
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BrokenLinkEmailsMiddleware().process_response(self.req, self.resp)
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self.assertEqual(len(mail.outbox), 1)
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@override_settings(APPEND_SLASH=True)
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def test_referer_equal_to_requested_url_without_trailing_slash_when_append_slash_is_set(self):
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self.req.path = self.req.path_info = '/regular_url/that/does/not/exist/'
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self.req.META['HTTP_REFERER'] = self.req.path_info[:-1]
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BrokenLinkEmailsMiddleware().process_response(self.req, self.resp)
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self.assertEqual(len(mail.outbox), 0)
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@override_settings(APPEND_SLASH=False)
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def test_referer_equal_to_requested_url_without_trailing_slash_when_append_slash_is_unset(self):
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self.req.path = self.req.path_info = '/regular_url/that/does/not/exist/'
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self.req.META['HTTP_REFERER'] = self.req.path_info[:-1]
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BrokenLinkEmailsMiddleware().process_response(self.req, self.resp)
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self.assertEqual(len(mail.outbox), 1)
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@override_settings(ROOT_URLCONF='middleware.cond_get_urls')
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class ConditionalGetMiddlewareTest(SimpleTestCase):
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request_factory = RequestFactory()
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def setUp(self):
|
|
self.req = self.request_factory.get('/')
|
|
self.resp = self.client.get(self.req.path_info)
|
|
|
|
# Tests for the ETag header
|
|
|
|
def test_middleware_calculates_etag(self):
|
|
self.assertNotIn('ETag', self.resp)
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 200)
|
|
self.assertNotEqual('', self.resp['ETag'])
|
|
|
|
def test_middleware_wont_overwrite_etag(self):
|
|
self.resp['ETag'] = 'eggs'
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 200)
|
|
self.assertEqual('eggs', self.resp['ETag'])
|
|
|
|
def test_no_etag_streaming_response(self):
|
|
res = StreamingHttpResponse(['content'])
|
|
self.assertFalse(ConditionalGetMiddleware().process_response(self.req, res).has_header('ETag'))
|
|
|
|
def test_no_etag_response_empty_content(self):
|
|
res = HttpResponse()
|
|
self.assertFalse(
|
|
ConditionalGetMiddleware().process_response(self.req, res).has_header('ETag')
|
|
)
|
|
|
|
def test_no_etag_no_store_cache(self):
|
|
self.resp['Cache-Control'] = 'No-Cache, No-Store, Max-age=0'
|
|
self.assertFalse(ConditionalGetMiddleware().process_response(self.req, self.resp).has_header('ETag'))
|
|
|
|
def test_etag_extended_cache_control(self):
|
|
self.resp['Cache-Control'] = 'my-directive="my-no-store"'
|
|
self.assertTrue(ConditionalGetMiddleware().process_response(self.req, self.resp).has_header('ETag'))
|
|
|
|
def test_if_none_match_and_no_etag(self):
|
|
self.req.META['HTTP_IF_NONE_MATCH'] = 'spam'
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 200)
|
|
|
|
def test_no_if_none_match_and_etag(self):
|
|
self.resp['ETag'] = 'eggs'
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 200)
|
|
|
|
def test_if_none_match_and_same_etag(self):
|
|
self.req.META['HTTP_IF_NONE_MATCH'] = self.resp['ETag'] = '"spam"'
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 304)
|
|
|
|
def test_if_none_match_and_different_etag(self):
|
|
self.req.META['HTTP_IF_NONE_MATCH'] = 'spam'
|
|
self.resp['ETag'] = 'eggs'
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 200)
|
|
|
|
def test_if_none_match_and_redirect(self):
|
|
self.req.META['HTTP_IF_NONE_MATCH'] = self.resp['ETag'] = 'spam'
|
|
self.resp['Location'] = '/'
|
|
self.resp.status_code = 301
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 301)
|
|
|
|
def test_if_none_match_and_client_error(self):
|
|
self.req.META['HTTP_IF_NONE_MATCH'] = self.resp['ETag'] = 'spam'
|
|
self.resp.status_code = 400
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 400)
|
|
|
|
# Tests for the Last-Modified header
|
|
|
|
def test_if_modified_since_and_no_last_modified(self):
|
|
self.req.META['HTTP_IF_MODIFIED_SINCE'] = 'Sat, 12 Feb 2011 17:38:44 GMT'
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 200)
|
|
|
|
def test_no_if_modified_since_and_last_modified(self):
|
|
self.resp['Last-Modified'] = 'Sat, 12 Feb 2011 17:38:44 GMT'
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 200)
|
|
|
|
def test_if_modified_since_and_same_last_modified(self):
|
|
self.req.META['HTTP_IF_MODIFIED_SINCE'] = 'Sat, 12 Feb 2011 17:38:44 GMT'
|
|
self.resp['Last-Modified'] = 'Sat, 12 Feb 2011 17:38:44 GMT'
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 304)
|
|
|
|
def test_if_modified_since_and_last_modified_in_the_past(self):
|
|
self.req.META['HTTP_IF_MODIFIED_SINCE'] = 'Sat, 12 Feb 2011 17:38:44 GMT'
|
|
self.resp['Last-Modified'] = 'Sat, 12 Feb 2011 17:35:44 GMT'
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 304)
|
|
|
|
def test_if_modified_since_and_last_modified_in_the_future(self):
|
|
self.req.META['HTTP_IF_MODIFIED_SINCE'] = 'Sat, 12 Feb 2011 17:38:44 GMT'
|
|
self.resp['Last-Modified'] = 'Sat, 12 Feb 2011 17:41:44 GMT'
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 200)
|
|
|
|
def test_if_modified_since_and_redirect(self):
|
|
self.req.META['HTTP_IF_MODIFIED_SINCE'] = 'Sat, 12 Feb 2011 17:38:44 GMT'
|
|
self.resp['Last-Modified'] = 'Sat, 12 Feb 2011 17:35:44 GMT'
|
|
self.resp['Location'] = '/'
|
|
self.resp.status_code = 301
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 301)
|
|
|
|
def test_if_modified_since_and_client_error(self):
|
|
self.req.META['HTTP_IF_MODIFIED_SINCE'] = 'Sat, 12 Feb 2011 17:38:44 GMT'
|
|
self.resp['Last-Modified'] = 'Sat, 12 Feb 2011 17:35:44 GMT'
|
|
self.resp.status_code = 400
|
|
self.resp = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.resp.status_code, 400)
|
|
|
|
def test_not_modified_headers(self):
|
|
"""
|
|
The 304 Not Modified response should include only the headers required
|
|
by section 4.1 of RFC 7232, Last-Modified, and the cookies.
|
|
"""
|
|
self.req.META['HTTP_IF_NONE_MATCH'] = self.resp['ETag'] = '"spam"'
|
|
self.resp['Date'] = 'Sat, 12 Feb 2011 17:35:44 GMT'
|
|
self.resp['Last-Modified'] = 'Sat, 12 Feb 2011 17:35:44 GMT'
|
|
self.resp['Expires'] = 'Sun, 13 Feb 2011 17:35:44 GMT'
|
|
self.resp['Vary'] = 'Cookie'
|
|
self.resp['Cache-Control'] = 'public'
|
|
self.resp['Content-Location'] = '/alt'
|
|
self.resp['Content-Language'] = 'en' # shouldn't be preserved
|
|
self.resp.set_cookie('key', 'value')
|
|
|
|
new_response = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(new_response.status_code, 304)
|
|
for header in ('Cache-Control', 'Content-Location', 'Date', 'ETag', 'Expires', 'Last-Modified', 'Vary'):
|
|
self.assertEqual(new_response[header], self.resp[header])
|
|
self.assertEqual(new_response.cookies, self.resp.cookies)
|
|
self.assertNotIn('Content-Language', new_response)
|
|
|
|
def test_no_unsafe(self):
|
|
"""
|
|
ConditionalGetMiddleware shouldn't return a conditional response on an
|
|
unsafe request. A response has already been generated by the time
|
|
ConditionalGetMiddleware is called, so it's too late to return a 412
|
|
Precondition Failed.
|
|
"""
|
|
get_response = ConditionalGetMiddleware().process_response(self.req, self.resp)
|
|
etag = get_response['ETag']
|
|
put_request = self.request_factory.put('/', HTTP_IF_MATCH=etag)
|
|
put_response = HttpResponse(status=200)
|
|
conditional_get_response = ConditionalGetMiddleware().process_response(put_request, put_response)
|
|
self.assertEqual(conditional_get_response.status_code, 200) # should never be a 412
|
|
|
|
def test_no_head(self):
|
|
"""
|
|
ConditionalGetMiddleware shouldn't compute and return an ETag on a
|
|
HEAD request since it can't do so accurately without access to the
|
|
response body of the corresponding GET.
|
|
"""
|
|
request = self.request_factory.head('/')
|
|
response = HttpResponse(status=200)
|
|
conditional_get_response = ConditionalGetMiddleware().process_response(request, response)
|
|
self.assertNotIn('ETag', conditional_get_response)
|
|
|
|
|
|
class XFrameOptionsMiddlewareTest(SimpleTestCase):
|
|
"""
|
|
Tests for the X-Frame-Options clickjacking prevention middleware.
|
|
"""
|
|
|
|
def test_same_origin(self):
|
|
"""
|
|
The X_FRAME_OPTIONS setting can be set to SAMEORIGIN to have the
|
|
middleware use that value for the HTTP header.
|
|
"""
|
|
with override_settings(X_FRAME_OPTIONS='SAMEORIGIN'):
|
|
r = XFrameOptionsMiddleware().process_response(HttpRequest(), HttpResponse())
|
|
self.assertEqual(r['X-Frame-Options'], 'SAMEORIGIN')
|
|
|
|
with override_settings(X_FRAME_OPTIONS='sameorigin'):
|
|
r = XFrameOptionsMiddleware().process_response(HttpRequest(), HttpResponse())
|
|
self.assertEqual(r['X-Frame-Options'], 'SAMEORIGIN')
|
|
|
|
def test_deny(self):
|
|
"""
|
|
The X_FRAME_OPTIONS setting can be set to DENY to have the middleware
|
|
use that value for the HTTP header.
|
|
"""
|
|
with override_settings(X_FRAME_OPTIONS='DENY'):
|
|
r = XFrameOptionsMiddleware().process_response(HttpRequest(), HttpResponse())
|
|
self.assertEqual(r['X-Frame-Options'], 'DENY')
|
|
|
|
with override_settings(X_FRAME_OPTIONS='deny'):
|
|
r = XFrameOptionsMiddleware().process_response(HttpRequest(), HttpResponse())
|
|
self.assertEqual(r['X-Frame-Options'], 'DENY')
|
|
|
|
def test_defaults_sameorigin(self):
|
|
"""
|
|
If the X_FRAME_OPTIONS setting is not set then it defaults to
|
|
DENY.
|
|
"""
|
|
with override_settings(X_FRAME_OPTIONS=None):
|
|
del settings.X_FRAME_OPTIONS # restored by override_settings
|
|
r = XFrameOptionsMiddleware().process_response(HttpRequest(), HttpResponse())
|
|
self.assertEqual(r['X-Frame-Options'], 'DENY')
|
|
|
|
def test_dont_set_if_set(self):
|
|
"""
|
|
If the X-Frame-Options header is already set then the middleware does
|
|
not attempt to override it.
|
|
"""
|
|
with override_settings(X_FRAME_OPTIONS='DENY'):
|
|
response = HttpResponse()
|
|
response['X-Frame-Options'] = 'SAMEORIGIN'
|
|
r = XFrameOptionsMiddleware().process_response(HttpRequest(), response)
|
|
self.assertEqual(r['X-Frame-Options'], 'SAMEORIGIN')
|
|
|
|
with override_settings(X_FRAME_OPTIONS='SAMEORIGIN'):
|
|
response = HttpResponse()
|
|
response['X-Frame-Options'] = 'DENY'
|
|
r = XFrameOptionsMiddleware().process_response(HttpRequest(), response)
|
|
self.assertEqual(r['X-Frame-Options'], 'DENY')
|
|
|
|
def test_response_exempt(self):
|
|
"""
|
|
If the response has an xframe_options_exempt attribute set to False
|
|
then it still sets the header, but if it's set to True then it doesn't.
|
|
"""
|
|
with override_settings(X_FRAME_OPTIONS='SAMEORIGIN'):
|
|
response = HttpResponse()
|
|
response.xframe_options_exempt = False
|
|
r = XFrameOptionsMiddleware().process_response(HttpRequest(), response)
|
|
self.assertEqual(r['X-Frame-Options'], 'SAMEORIGIN')
|
|
|
|
response = HttpResponse()
|
|
response.xframe_options_exempt = True
|
|
r = XFrameOptionsMiddleware().process_response(HttpRequest(), response)
|
|
self.assertIsNone(r.get('X-Frame-Options'))
|
|
|
|
def test_is_extendable(self):
|
|
"""
|
|
The XFrameOptionsMiddleware method that determines the X-Frame-Options
|
|
header value can be overridden based on something in the request or
|
|
response.
|
|
"""
|
|
class OtherXFrameOptionsMiddleware(XFrameOptionsMiddleware):
|
|
# This is just an example for testing purposes...
|
|
def get_xframe_options_value(self, request, response):
|
|
if getattr(request, 'sameorigin', False):
|
|
return 'SAMEORIGIN'
|
|
if getattr(response, 'sameorigin', False):
|
|
return 'SAMEORIGIN'
|
|
return 'DENY'
|
|
|
|
with override_settings(X_FRAME_OPTIONS='DENY'):
|
|
response = HttpResponse()
|
|
response.sameorigin = True
|
|
r = OtherXFrameOptionsMiddleware().process_response(HttpRequest(), response)
|
|
self.assertEqual(r['X-Frame-Options'], 'SAMEORIGIN')
|
|
|
|
request = HttpRequest()
|
|
request.sameorigin = True
|
|
r = OtherXFrameOptionsMiddleware().process_response(request, HttpResponse())
|
|
self.assertEqual(r['X-Frame-Options'], 'SAMEORIGIN')
|
|
|
|
with override_settings(X_FRAME_OPTIONS='SAMEORIGIN'):
|
|
r = OtherXFrameOptionsMiddleware().process_response(HttpRequest(), HttpResponse())
|
|
self.assertEqual(r['X-Frame-Options'], 'DENY')
|
|
|
|
|
|
class GZipMiddlewareTest(SimpleTestCase):
|
|
"""
|
|
Tests the GZipMiddleware.
|
|
"""
|
|
short_string = b"This string is too short to be worth compressing."
|
|
compressible_string = b'a' * 500
|
|
incompressible_string = b''.join(int2byte(random.randint(0, 255)) for _ in range(500))
|
|
sequence = [b'a' * 500, b'b' * 200, b'a' * 300]
|
|
sequence_unicode = ['a' * 500, 'é' * 200, 'a' * 300]
|
|
request_factory = RequestFactory()
|
|
|
|
def setUp(self):
|
|
self.req = self.request_factory.get('/')
|
|
self.req.META['HTTP_ACCEPT_ENCODING'] = 'gzip, deflate'
|
|
self.req.META['HTTP_USER_AGENT'] = 'Mozilla/5.0 (Windows NT 5.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1'
|
|
self.resp = HttpResponse()
|
|
self.resp.status_code = 200
|
|
self.resp.content = self.compressible_string
|
|
self.resp['Content-Type'] = 'text/html; charset=UTF-8'
|
|
self.stream_resp = StreamingHttpResponse(self.sequence)
|
|
self.stream_resp['Content-Type'] = 'text/html; charset=UTF-8'
|
|
self.stream_resp_unicode = StreamingHttpResponse(self.sequence_unicode)
|
|
self.stream_resp_unicode['Content-Type'] = 'text/html; charset=UTF-8'
|
|
|
|
@staticmethod
|
|
def decompress(gzipped_string):
|
|
with gzip.GzipFile(mode='rb', fileobj=BytesIO(gzipped_string)) as f:
|
|
return f.read()
|
|
|
|
@staticmethod
|
|
def get_mtime(gzipped_string):
|
|
with gzip.GzipFile(mode='rb', fileobj=BytesIO(gzipped_string)) as f:
|
|
f.read() # must read the data before accessing the header
|
|
return f.mtime
|
|
|
|
def test_compress_response(self):
|
|
"""
|
|
Compression is performed on responses with compressible content.
|
|
"""
|
|
r = GZipMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.decompress(r.content), self.compressible_string)
|
|
self.assertEqual(r.get('Content-Encoding'), 'gzip')
|
|
self.assertEqual(r.get('Content-Length'), str(len(r.content)))
|
|
|
|
def test_compress_streaming_response(self):
|
|
"""
|
|
Compression is performed on responses with streaming content.
|
|
"""
|
|
r = GZipMiddleware().process_response(self.req, self.stream_resp)
|
|
self.assertEqual(self.decompress(b''.join(r)), b''.join(self.sequence))
|
|
self.assertEqual(r.get('Content-Encoding'), 'gzip')
|
|
self.assertFalse(r.has_header('Content-Length'))
|
|
|
|
def test_compress_streaming_response_unicode(self):
|
|
"""
|
|
Compression is performed on responses with streaming Unicode content.
|
|
"""
|
|
r = GZipMiddleware().process_response(self.req, self.stream_resp_unicode)
|
|
self.assertEqual(
|
|
self.decompress(b''.join(r)),
|
|
b''.join(x.encode() for x in self.sequence_unicode)
|
|
)
|
|
self.assertEqual(r.get('Content-Encoding'), 'gzip')
|
|
self.assertFalse(r.has_header('Content-Length'))
|
|
|
|
def test_compress_file_response(self):
|
|
"""
|
|
Compression is performed on FileResponse.
|
|
"""
|
|
with open(__file__, 'rb') as file1:
|
|
file_resp = FileResponse(file1)
|
|
file_resp['Content-Type'] = 'text/html; charset=UTF-8'
|
|
r = GZipMiddleware().process_response(self.req, file_resp)
|
|
with open(__file__, 'rb') as file2:
|
|
self.assertEqual(self.decompress(b''.join(r)), file2.read())
|
|
self.assertEqual(r.get('Content-Encoding'), 'gzip')
|
|
self.assertIsNot(r.file_to_stream, file1)
|
|
|
|
def test_compress_non_200_response(self):
|
|
"""
|
|
Compression is performed on responses with a status other than 200
|
|
(#10762).
|
|
"""
|
|
self.resp.status_code = 404
|
|
r = GZipMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(self.decompress(r.content), self.compressible_string)
|
|
self.assertEqual(r.get('Content-Encoding'), 'gzip')
|
|
|
|
def test_no_compress_short_response(self):
|
|
"""
|
|
Compression isn't performed on responses with short content.
|
|
"""
|
|
self.resp.content = self.short_string
|
|
r = GZipMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(r.content, self.short_string)
|
|
self.assertIsNone(r.get('Content-Encoding'))
|
|
|
|
def test_no_compress_compressed_response(self):
|
|
"""
|
|
Compression isn't performed on responses that are already compressed.
|
|
"""
|
|
self.resp['Content-Encoding'] = 'deflate'
|
|
r = GZipMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(r.content, self.compressible_string)
|
|
self.assertEqual(r.get('Content-Encoding'), 'deflate')
|
|
|
|
def test_no_compress_incompressible_response(self):
|
|
"""
|
|
Compression isn't performed on responses with incompressible content.
|
|
"""
|
|
self.resp.content = self.incompressible_string
|
|
r = GZipMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(r.content, self.incompressible_string)
|
|
self.assertIsNone(r.get('Content-Encoding'))
|
|
|
|
def test_compress_deterministic(self):
|
|
"""
|
|
Compression results are the same for the same content and don't
|
|
include a modification time (since that would make the results
|
|
of compression non-deterministic and prevent
|
|
ConditionalGetMiddleware from recognizing conditional matches
|
|
on gzipped content).
|
|
"""
|
|
r1 = GZipMiddleware().process_response(self.req, self.resp)
|
|
r2 = GZipMiddleware().process_response(self.req, self.resp)
|
|
self.assertEqual(r1.content, r2.content)
|
|
self.assertEqual(self.get_mtime(r1.content), 0)
|
|
self.assertEqual(self.get_mtime(r2.content), 0)
|
|
|
|
|
|
class ETagGZipMiddlewareTest(SimpleTestCase):
|
|
"""
|
|
ETags are handled properly by GZipMiddleware.
|
|
"""
|
|
rf = RequestFactory()
|
|
compressible_string = b'a' * 500
|
|
|
|
def test_strong_etag_modified(self):
|
|
"""
|
|
GZipMiddleware makes a strong ETag weak.
|
|
"""
|
|
request = self.rf.get('/', HTTP_ACCEPT_ENCODING='gzip, deflate')
|
|
response = HttpResponse(self.compressible_string)
|
|
response['ETag'] = '"eggs"'
|
|
gzip_response = GZipMiddleware().process_response(request, response)
|
|
self.assertEqual(gzip_response['ETag'], 'W/"eggs"')
|
|
|
|
def test_weak_etag_not_modified(self):
|
|
"""
|
|
GZipMiddleware doesn't modify a weak ETag.
|
|
"""
|
|
request = self.rf.get('/', HTTP_ACCEPT_ENCODING='gzip, deflate')
|
|
response = HttpResponse(self.compressible_string)
|
|
response['ETag'] = 'W/"eggs"'
|
|
gzip_response = GZipMiddleware().process_response(request, response)
|
|
self.assertEqual(gzip_response['ETag'], 'W/"eggs"')
|
|
|
|
def test_etag_match(self):
|
|
"""
|
|
GZipMiddleware allows 304 Not Modified responses.
|
|
"""
|
|
request = self.rf.get('/', HTTP_ACCEPT_ENCODING='gzip, deflate')
|
|
response = GZipMiddleware().process_response(
|
|
request,
|
|
ConditionalGetMiddleware().process_response(request, HttpResponse(self.compressible_string))
|
|
)
|
|
gzip_etag = response['ETag']
|
|
next_request = self.rf.get('/', HTTP_ACCEPT_ENCODING='gzip, deflate', HTTP_IF_NONE_MATCH=gzip_etag)
|
|
next_response = ConditionalGetMiddleware().process_response(
|
|
next_request,
|
|
HttpResponse(self.compressible_string)
|
|
)
|
|
self.assertEqual(next_response.status_code, 304)
|