Derek Stegelman

Snippet Sunday - Require Login Middleware

Sunday snippets are bits of code that I've found useful in past projects. I post them here in hopes that someone else will find them useful. Most of these are Github Gists and you can follow them there too if you want.

I recently had to secure an entire site under authentication. Adding @login_required to all views seemed like a terrible idea. Naturally, the Django community pulled through and provided me with an awesome direction. Below is a snippet of middleware I found to secure each and every request coming from the django server. One caveat to note is that if you are using static file hosting through the django app in a development environment, those static files won't be delivered until you login. One small, and manageable problem. Enjoy!

from django.conf import settings
from django.contrib.auth.views import login
from django.http import HttpResponseRedirect


class RequireLoginMiddleware(object):
"""
Require Login middleware. If enabled, each Django-powered page will
require authentication.

If an anonymous user requests a page, he/she is redirected to the login
page set by REQUIRE_LOGIN_PATH or /accounts/login/ by default.
"""
def __init__(self):
self.require_login_path = getattr(settings, 'REQUIRE_LOGIN_PATH', '/accounts/login/')

def process_request(self, request):
if request.path != self.require_login_path and request.user.is_anonymous():
if request.POST:
return login(request)
else:
return HttpResponseRedirect('%s?next=%s' % (self.require_login_path, request.path))
License/Thanks

Many thanks to Jared Kuolt for sharing this on Django Snippets. Below are his license terms. ### # Copyright (c) 2006-2007, Jared Kuolt # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # # * Redistributions of source code must retain the above copyright notice, # this list of conditions and the following disclaimer. # * Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # * Neither the name of the SuperJared.com nor the names of its # contributors may be used to endorse or promote products derived from # this software without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. ###