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Fixed #21911 -- Made admin views redirect to login when needed 

Historically, the Django admin used to pass through the request
from an unauthorized access to the login view directly. Now we
are using a proper redirection, which is also preventing
inadvertantly changing data when POSTing login data to an admin
view when user is already authorized.
Thanks Marc Tamlyn and Tim Graham for the reviews.
This commit is contained in:
Claude Paroz 2014-01-31 15:18:55 +01:00
parent 5848bea9dc
commit be0ad62994
4 changed files with 93 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
django/contrib/admin/sites.py
View File

@ -2,6 +2,7 @@ from functools import update_wrapper
from django.http import Http404, HttpResponseRedirect
from django.contrib.admin import ModelAdmin, actions
from django.contrib.auth import logout as auth_logout, REDIRECT_FIELD_NAME
from django.contrib.auth.views import redirect_to_login
from django.views.decorators.csrf import csrf_protect
from django.db.models.base import ModelBase
from django.apps import apps
@ -198,7 +199,10 @@ class AdminSite(object):
if request.path == reverse('admin:logout', current_app=self.name):
index_path = reverse('admin:index', current_app=self.name)
return HttpResponseRedirect(index_path)
return self.login(request)
return redirect_to_login(
request.get_full_path(),
reverse('admin:login', current_app=self.name)
)
return view(request, *args, **kwargs)
if not cacheable:
inner = never_cache(inner)
@ -329,6 +333,11 @@ class AdminSite(object):
"""
Displays the login form for the given HttpRequest.
"""
if request.method == 'GET' and self.has_permission(request):
# Already logged-in, redirect to admin index
index_path = reverse('admin:index', current_app=self.name)
return HttpResponseRedirect(index_path)
from django.contrib.auth.views import login
# Since this module gets imported in the application's root package,
# it cannot import models from other applications at the module level,

12
docs/releases/1.7.txt
View File

@ -830,6 +830,8 @@ a :exc:`~exceptions.ValueError` when encountering them, you will have to
install pytz_. You may be affected by this problem if you use Django's time
zone-related date formats or :mod:`django.contrib.syndication`.
.. _pytz: https://pypi.python.org/pypi/pytz/
``remove()`` and ``clear()`` methods of related managers
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@ -858,7 +860,15 @@ Fixing the issues introduced some backward incompatible changes:
may not be an issue depending on your database and your data itself.
See :ref:`this note <nested-queries-performance>` for more details.
.. _pytz: https://pypi.python.org/pypi/pytz/
Admin login redirection strategy
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Historically, the Django admin site passed the request from an unauthorized or
unauthenticated user directly to the login view, without HTTP redirection. In
Django 1.7, this behavior changed to conform to a more traditional workflow
where any unauthorized request to an admin page will be redirected (by HTTP
status code 302) to the login page, with the ``next`` parameter set to the
referring path. The user will be redirected there after a successful login.
Miscellaneous
~~~~~~~~~~~~~

124
tests/admin_views/tests.py
View File

@ -764,22 +764,22 @@ class CustomModelAdminTest(AdminViewBasicTestCase):
def testCustomAdminSiteLoginForm(self):
self.client.logout()
response = self.client.get('/test_admin/admin2/')
response = self.client.get('/test_admin/admin2/', follow=True)
self.assertIsInstance(response, TemplateResponse)
self.assertEqual(response.status_code, 200)
login = self.client.post('/test_admin/admin2/', {
login = self.client.post('/test_admin/admin2/login/', {
REDIRECT_FIELD_NAME: '/test_admin/admin2/',
LOGIN_FORM_KEY: 1,
'username': 'customform',
'password': 'secret',
})
}, follow=True)
self.assertIsInstance(login, TemplateResponse)
self.assertEqual(login.status_code, 200)
self.assertContains(login, 'custom form error')
def testCustomAdminSiteLoginTemplate(self):
self.client.logout()
response = self.client.get('/test_admin/admin2/')
response = self.client.get('/test_admin/admin2/', follow=True)
self.assertIsInstance(response, TemplateResponse)
self.assertTemplateUsed(response, 'custom_admin/login.html')
self.assertContains(response, 'Hello from a custom login template')
@ -928,98 +928,105 @@ class AdminViewPermissionsTest(TestCase):
Unsuccessfull attempts will continue to render the login page with
a 200 status code.
"""
login_url = reverse('admin:login') + '?next=/test_admin/admin/'
# Super User
response = self.client.get('/test_admin/admin/')
self.assertEqual(response.status_code, 200)
login = self.client.post('/test_admin/admin/', self.super_login)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, '/test_admin/admin/')
self.assertFalse(login.context)
self.client.get('/test_admin/admin/logout/')
# Test if user enters email address
response = self.client.get('/test_admin/admin/')
self.assertEqual(response.status_code, 200)
login = self.client.post('/test_admin/admin/', self.super_email_login)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.super_email_login)
self.assertContains(login, ERROR_MESSAGE)
# only correct passwords get a username hint
login = self.client.post('/test_admin/admin/', self.super_email_bad_login)
login = self.client.post(login_url, self.super_email_bad_login)
self.assertContains(login, ERROR_MESSAGE)
new_user = User(username='jondoe', password='secret', email='super@example.com')
new_user.save()
# check to ensure if there are multiple email addresses a user doesn't get a 500
login = self.client.post('/test_admin/admin/', self.super_email_login)
login = self.client.post(login_url, self.super_email_login)
self.assertContains(login, ERROR_MESSAGE)
# Add User
response = self.client.get('/test_admin/admin/')
self.assertEqual(response.status_code, 200)
login = self.client.post('/test_admin/admin/', self.adduser_login)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.adduser_login)
self.assertRedirects(login, '/test_admin/admin/')
self.assertFalse(login.context)
self.client.get('/test_admin/admin/logout/')
# Change User
response = self.client.get('/test_admin/admin/')
self.assertEqual(response.status_code, 200)
login = self.client.post('/test_admin/admin/', self.changeuser_login)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.changeuser_login)
self.assertRedirects(login, '/test_admin/admin/')
self.assertFalse(login.context)
self.client.get('/test_admin/admin/logout/')
# Delete User
response = self.client.get('/test_admin/admin/')
self.assertEqual(response.status_code, 200)
login = self.client.post('/test_admin/admin/', self.deleteuser_login)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.deleteuser_login)
self.assertRedirects(login, '/test_admin/admin/')
self.assertFalse(login.context)
self.client.get('/test_admin/admin/logout/')
# Regular User should not be able to login.
response = self.client.get('/test_admin/admin/')
self.assertEqual(response.status_code, 200)
login = self.client.post('/test_admin/admin/', self.joepublic_login)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.joepublic_login)
self.assertEqual(login.status_code, 200)
self.assertContains(login, ERROR_MESSAGE)
# Requests without username should not return 500 errors.
response = self.client.get('/test_admin/admin/')
self.assertEqual(response.status_code, 200)
login = self.client.post('/test_admin/admin/', self.no_username_login)
self.assertEqual(response.status_code, 302)
login = self.client.post(login_url, self.no_username_login)
self.assertEqual(login.status_code, 200)
form = login.context[0].get('form')
self.assertEqual(form.errors['username'][0], 'This field is required.')
def testLoginSuccessfullyRedirectsToOriginalUrl(self):
response = self.client.get('/test_admin/admin/')
self.assertEqual(response.status_code, 200)
self.assertEqual(response.status_code, 302)
query_string = 'the-answer=42'
redirect_url = '/test_admin/admin/?%s' % query_string
new_next = {REDIRECT_FIELD_NAME: redirect_url}
login = self.client.post('/test_admin/admin/', dict(self.super_login, **new_next), QUERY_STRING=query_string)
post_data = self.super_login.copy()
post_data.pop(REDIRECT_FIELD_NAME)
login = self.client.post(
'%s?%s' % (reverse('admin:login'), urlencode(new_next)),
post_data)
self.assertRedirects(login, redirect_url)
def testDoubleLoginIsNotAllowed(self):
"""Regression test for #19327"""
login_url = reverse('admin:login') + '?next=/test_admin/admin/'
response = self.client.get('/test_admin/admin/')
self.assertEqual(response.status_code, 200)
self.assertEqual(response.status_code, 302)
# Establish a valid admin session
login = self.client.post('/test_admin/admin/', self.super_login)
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, '/test_admin/admin/')
self.assertFalse(login.context)
# Logging in with non-admin user fails
login = self.client.post('/test_admin/admin/', self.joepublic_login)
login = self.client.post(login_url, self.joepublic_login)
self.assertEqual(login.status_code, 200)
self.assertContains(login, ERROR_MESSAGE)
# Establish a valid admin session
login = self.client.post('/test_admin/admin/', self.super_login)
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, '/test_admin/admin/')
self.assertFalse(login.context)
# Logging in with admin user while already logged in
login = self.client.post('/test_admin/admin/', self.super_login)
login = self.client.post(login_url, self.super_login)
self.assertRedirects(login, '/test_admin/admin/')
self.assertFalse(login.context)
self.client.get('/test_admin/admin/logout/')
@ -1027,6 +1034,7 @@ class AdminViewPermissionsTest(TestCase):
def testAddView(self):
"""Test add view restricts access and actually adds items."""
login_url = reverse('admin:login') + '?next=/test_admin/admin/'
add_dict = {'title': 'Døm ikke',
'content': '<p>great article</p>',
'date_0': '2008-03-18', 'date_1': '10:54:39',
@ -1034,7 +1042,7 @@ class AdminViewPermissionsTest(TestCase):
# Change User should not have access to add articles
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.changeuser_login)
self.client.post(login_url, self.changeuser_login)
# make sure the view removes test cookie
self.assertEqual(self.client.session.test_cookie_worked(), False)
response = self.client.get('/test_admin/admin/admin_views/article/add/')
@ -1047,7 +1055,7 @@ class AdminViewPermissionsTest(TestCase):
# Add user may login and POST to add view, then redirect to admin root
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.adduser_login)
self.client.post(login_url, self.adduser_login)
addpage = self.client.get('/test_admin/admin/admin_views/article/add/')
change_list_link = '&rsaquo; <a href="/test_admin/admin/admin_views/article/">Articles</a>'
self.assertNotContains(addpage, change_list_link,
@ -1061,7 +1069,7 @@ class AdminViewPermissionsTest(TestCase):
# Super can add too, but is redirected to the change list view
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.super_login)
self.client.post(login_url, self.super_login)
addpage = self.client.get('/test_admin/admin/admin_views/article/add/')
self.assertContains(addpage, change_list_link,
msg_prefix='Unrestricted user is not given link to change list view in breadcrumbs.')
@ -1075,13 +1083,14 @@ class AdminViewPermissionsTest(TestCase):
self.client.login(username='joepublic', password='secret')
# Check and make sure that if user expires, data still persists
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.super_login)
self.client.post(login_url, self.super_login)
# make sure the view removes test cookie
self.assertEqual(self.client.session.test_cookie_worked(), False)
def testChangeView(self):
"""Change view should restrict access and allow users to edit items."""
login_url = reverse('admin:login') + '?next=/test_admin/admin/'
change_dict = {'title': 'Ikke fordømt',
'content': '<p>edited article</p>',
'date_0': '2008-03-18', 'date_1': '10:54:39',
@ -1089,7 +1098,7 @@ class AdminViewPermissionsTest(TestCase):
# add user shoud not be able to view the list of article or change any of them
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.adduser_login)
self.client.post(login_url, self.adduser_login)
response = self.client.get('/test_admin/admin/admin_views/article/')
self.assertEqual(response.status_code, 403)
response = self.client.get('/test_admin/admin/admin_views/article/1/')
@ -1100,7 +1109,7 @@ class AdminViewPermissionsTest(TestCase):
# change user can view all items and edit them
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.changeuser_login)
self.client.post(login_url, self.changeuser_login)
response = self.client.get('/test_admin/admin/admin_views/article/')
self.assertEqual(response.status_code, 200)
response = self.client.get('/test_admin/admin/admin_views/article/1/')
@ -1125,7 +1134,7 @@ class AdminViewPermissionsTest(TestCase):
RowLevelChangePermissionModel.objects.create(id=1, name="odd id")
RowLevelChangePermissionModel.objects.create(id=2, name="even id")
for login_dict in [self.super_login, self.changeuser_login, self.adduser_login, self.deleteuser_login]:
self.client.post('/test_admin/admin/', login_dict)
self.client.post(login_url, login_dict)
response = self.client.get('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/1/')
self.assertEqual(response.status_code, 403)
response = self.client.post('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/1/', {'name': 'changed'})
@ -1137,19 +1146,20 @@ class AdminViewPermissionsTest(TestCase):
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=2).name, 'changed')
self.assertRedirects(response, '/test_admin/admin/')
self.client.get('/test_admin/admin/logout/')
for login_dict in [self.joepublic_login, self.no_username_login]:
self.client.post('/test_admin/admin/', login_dict)
response = self.client.get('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/1/')
self.client.post(login_url, login_dict)
response = self.client.get('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/1/', follow=True)
self.assertEqual(response.status_code, 200)
self.assertContains(response, 'login-form')
response = self.client.post('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/1/', {'name': 'changed'})
response = self.client.post('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/1/', {'name': 'changed'}, follow=True)
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=1).name, 'odd id')
self.assertEqual(response.status_code, 200)
self.assertContains(response, 'login-form')
response = self.client.get('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/2/')
response = self.client.get('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/2/', follow=True)
self.assertEqual(response.status_code, 200)
self.assertContains(response, 'login-form')
response = self.client.post('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/2/', {'name': 'changed again'})
response = self.client.post('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/2/', {'name': 'changed again'}, follow=True)
self.assertEqual(RowLevelChangePermissionModel.objects.get(id=2).name, 'changed')
self.assertEqual(response.status_code, 200)
self.assertContains(response, 'login-form')
@ -1158,16 +1168,18 @@ class AdminViewPermissionsTest(TestCase):
def testHistoryView(self):
"""History view should restrict access."""
login_url = reverse('admin:login') + '?next=/test_admin/admin/'
# add user shoud not be able to view the list of article or change any of them
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.adduser_login)
self.client.post(login_url, self.adduser_login)
response = self.client.get('/test_admin/admin/admin_views/article/1/history/')
self.assertEqual(response.status_code, 403)
self.client.get('/test_admin/admin/logout/')
# change user can view all items and edit them
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.changeuser_login)
self.client.post(login_url, self.changeuser_login)
response = self.client.get('/test_admin/admin/admin_views/article/1/history/')
self.assertEqual(response.status_code, 200)
@ -1175,7 +1187,7 @@ class AdminViewPermissionsTest(TestCase):
RowLevelChangePermissionModel.objects.create(id=1, name="odd id")
RowLevelChangePermissionModel.objects.create(id=2, name="even id")
for login_dict in [self.super_login, self.changeuser_login, self.adduser_login, self.deleteuser_login]:
self.client.post('/test_admin/admin/', login_dict)
self.client.post(login_url, login_dict)
response = self.client.get('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/1/history/')
self.assertEqual(response.status_code, 403)
@ -1185,11 +1197,11 @@ class AdminViewPermissionsTest(TestCase):
self.client.get('/test_admin/admin/logout/')
for login_dict in [self.joepublic_login, self.no_username_login]:
self.client.post('/test_admin/admin/', login_dict)
response = self.client.get('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/1/history/')
self.client.post(login_url, login_dict)
response = self.client.get('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/1/history/', follow=True)
self.assertEqual(response.status_code, 200)
self.assertContains(response, 'login-form')
response = self.client.get('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/2/history/')
response = self.client.get('/test_admin/admin/admin_views/rowlevelchangepermissionmodel/2/history/', follow=True)
self.assertEqual(response.status_code, 200)
self.assertContains(response, 'login-form')
@ -1200,11 +1212,12 @@ class AdminViewPermissionsTest(TestCase):
The foreign key widget should only show the "add related" button if the
user has permission to add that related item.
"""
login_url = reverse('admin:login') + '?next=/test_admin/admin/'
# Set up and log in user.
url = '/test_admin/admin/admin_views/article/add/'
add_link_text = ' class="add-another"'
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.adduser_login)
self.client.post(login_url, self.adduser_login)
# The add user can't add sections yet, so they shouldn't see the "add
# section" link.
response = self.client.get(url)
@ -1218,8 +1231,9 @@ class AdminViewPermissionsTest(TestCase):
self.assertContains(response, add_link_text)
def testCustomModelAdminTemplates(self):
login_url = reverse('admin:login') + '?next=/test_admin/admin/'
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.super_login)
self.client.post(login_url, self.super_login)
# Test custom change list template with custom extra context
response = self.client.get('/test_admin/admin/admin_views/customarticle/')
@ -1260,11 +1274,12 @@ class AdminViewPermissionsTest(TestCase):
def testDeleteView(self):
"""Delete view should restrict access and actually delete items."""
login_url = reverse('admin:login') + '?next=/test_admin/admin/'
delete_dict = {'post': 'yes'}
# add user shoud not be able to delete articles
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.adduser_login)
self.client.post(login_url, self.adduser_login)
response = self.client.get('/test_admin/admin/admin_views/article/1/delete/')
self.assertEqual(response.status_code, 403)
post = self.client.post('/test_admin/admin/admin_views/article/1/delete/', delete_dict)
@ -1274,7 +1289,7 @@ class AdminViewPermissionsTest(TestCase):
# Delete user can delete
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.deleteuser_login)
self.client.post(login_url, self.deleteuser_login)
response = self.client.get('/test_admin/admin/admin_views/section/1/delete/')
# test response contains link to related Article
self.assertContains(response, "admin_views/article/1/")
@ -1322,11 +1337,12 @@ class AdminViewPermissionsTest(TestCase):
If a user has no module perms, avoid iterating over all the modeladmins
in the registry.
"""
login_url = reverse('admin:login') + '?next=/test_admin/admin/'
opts = Article._meta
change_user = User.objects.get(username='changeuser')
permission = get_perm(Article, get_permission_codename('change', opts))
self.client.post('/test_admin/admin/', self.changeuser_login)
self.client.post(login_url, self.changeuser_login)
# the user has no module permissions, because this module doesn't exist
change_user.user_permissions.remove(permission)
@ -1347,7 +1363,7 @@ class AdminViewPermissionsTest(TestCase):
shortcut_url = "/test_admin/admin/r/%s/%s/" % (model_ctype.pk, obj.pk)
# Not logged in: we should see the login page.
response = self.client.get(shortcut_url, follow=False)
response = self.client.get(shortcut_url, follow=True)
self.assertTemplateUsed(response, 'admin/login.html')
# Logged in? Redirect.
@ -1383,7 +1399,7 @@ class AdminViewsNoUrlTest(TestCase):
def test_no_standard_modeladmin_urls(self):
"""Admin index views don't break when user's ModelAdmin removes standard urls"""
self.client.get('/test_admin/admin/')
self.client.post('/test_admin/admin/', self.changeuser_login)
r = self.client.post(reverse('admin:login'), self.changeuser_login)
r = self.client.get('/test_admin/admin/')
# we shouldn' get an 500 error caused by a NoReverseMatch
self.assertEqual(r.status_code, 200)
@ -2810,7 +2826,7 @@ class AdminCustomQuerysetTest(TestCase):
Ensure that custom querysets are considered for the admin history view.
Refs #21013.
"""
self.client.post('/test_admin/admin/', self.super_login)
self.client.post(reverse('admin:login'), self.super_login)
FilteredManager.objects.create(pk=1)
FilteredManager.objects.create(pk=2)
response = self.client.get('/test_admin/admin/admin_views/filteredmanager/')
@ -4223,7 +4239,7 @@ class AdminViewLogoutTest(TestCase):
response = self.client.get('/test_admin/admin/logout/', follow=True)
self.assertEqual(response.status_code, 200)
self.assertTemplateUsed(response, 'admin/login.html')
self.assertEqual(response.request['PATH_INFO'], '/test_admin/admin/')
self.assertEqual(response.request['PATH_INFO'], '/test_admin/admin/login/')
self.assertContains(response, '<input type="hidden" name="next" value="/test_admin/admin/" />')

4
tests/cache/tests.py vendored
View File

@ -1968,12 +1968,12 @@ class TestEtagWithAdmin(TestCase):
def test_admin(self):
with self.settings(USE_ETAGS=False):
response = self.client.get('/test_admin/admin/')
self.assertEqual(response.status_code, 200)
self.assertEqual(response.status_code, 302)
self.assertFalse(response.has_header('ETag'))
with self.settings(USE_ETAGS=True):
response = self.client.get('/test_admin/admin/')
self.assertEqual(response.status_code, 200)
self.assertEqual(response.status_code, 302)
self.assertTrue(response.has_header('ETag'))