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annotate gpp/core/middleware.py @ 302:94bd52dada89

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Fixing #10; Adding a colophon flatpage.
author Brian Neal <bgneal@gmail.com>
date Sat, 15 Jan 2011 20:27:37 +0000
parents a2d388ed106e
children e9a066db3f54
rev   line source
bgneal@215 1 """Common middleware for the entire project."""
bgneal@227 2 import datetime
bgneal@227 3
bgneal@215 4 from django.contrib.auth import logout
bgneal@227 5 from django.conf import settings
bgneal@227 6
bgneal@227 7 from core.models import UserLastVisit
bgneal@227 8 from core.models import AnonLastVisit
bgneal@227 9 from core.functions import get_ip
bgneal@227 10
bgneal@215 11
bgneal@215 12 class InactiveUserMiddleware(object):
bgneal@215 13 """
bgneal@215 14 This middleware ensures users with is_active set to False get their
bgneal@215 15 session destroyed and are treated as logged out.
bgneal@215 16 This middleware should come after the 'django.contrib.auth.middleware.
bgneal@215 17 AuthenticationMiddleware' in settings.py.
bgneal@215 18 Idea taken from: http://djangosnippets.org/snippets/1105/
bgneal@215 19 """
bgneal@215 20
bgneal@227 21 def process_view(self, request, view_func, view_args, view_kwargs):
bgneal@215 22 if request.user.is_authenticated() and not request.user.is_active:
bgneal@215 23 logout(request)
bgneal@215 24
bgneal@227 25
bgneal@227 26 ONLINE_COOKIE = 'sg101_online' # online cookie name
bgneal@227 27 ONLINE_TIMEOUT = 10 * 60 # online cookie lifetime in seconds
bgneal@227 28
bgneal@227 29 class WhosOnline(object):
bgneal@227 30 """
bgneal@227 31 This middleware class keeps track of which registered users have
bgneal@227 32 been seen recently, and the number of unique unregistered users.
bgneal@227 33 This middleware should come after the authentication middleware,
bgneal@227 34 as we count on the user attribute being attached to the request.
bgneal@227 35 """
bgneal@227 36
bgneal@227 37 def process_response(self, request, response):
bgneal@227 38 """
bgneal@227 39 Keep track of who is online.
bgneal@227 40 """
bgneal@231 41 # Note that some requests may not have a user attribute
bgneal@231 42 # as these may have been redirected in the middleware chain before
bgneal@231 43 # the auth middleware got a chance to run. If this is the case, just
bgneal@231 44 # bail out. We also ignore AJAX requests.
bgneal@231 45
bgneal@231 46 if not hasattr(request, 'user') or request.is_ajax():
bgneal@229 47 return response
bgneal@227 48
bgneal@227 49 if request.user.is_authenticated():
bgneal@227 50 if request.COOKIES.get(ONLINE_COOKIE) is None:
bgneal@227 51 # update the last seen timestamp
bgneal@227 52 try:
bgneal@227 53 ulv = UserLastVisit.objects.get(user=request.user)
bgneal@227 54 except UserLastVisit.DoesNotExist:
bgneal@227 55 ulv = UserLastVisit(user=request.user)
bgneal@227 56
bgneal@227 57 ulv.last_visit = datetime.datetime.now()
bgneal@227 58 ulv.save()
bgneal@227 59
bgneal@227 60 # set a cookie to expire in 10 minutes or so
bgneal@227 61 response.set_cookie(ONLINE_COOKIE, '1', max_age=ONLINE_TIMEOUT)
bgneal@227 62 else:
bgneal@227 63 if request.COOKIES.get(settings.CSRF_COOKIE_NAME) is not None:
bgneal@227 64 # We have a non-authenticated user that has cookies enabled. This
bgneal@227 65 # means we can track them.
bgneal@227 66 if request.COOKIES.get(ONLINE_COOKIE) is None:
bgneal@227 67 # update the timestamp for this anonymous visitor
bgneal@227 68 ip = get_ip(request)
bgneal@227 69 if ip:
bgneal@227 70 try:
bgneal@227 71 alv = AnonLastVisit.objects.get(ip=ip)
bgneal@227 72 except AnonLastVisit.DoesNotExist:
bgneal@227 73 alv = AnonLastVisit(ip=ip)
bgneal@227 74
bgneal@227 75 alv.last_visit = datetime.datetime.now()
bgneal@227 76 alv.save()
bgneal@227 77
bgneal@227 78 # set a cookie to expire in 10 minutes or so
bgneal@227 79 response.set_cookie(ONLINE_COOKIE, '1', max_age=ONLINE_TIMEOUT)
bgneal@227 80
bgneal@227 81 return response