54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
import logging
|
|
logger = logging.getLogger(__name__)
|
|
|
|
import time
|
|
|
|
from django.conf import settings
|
|
|
|
MAX_IP_AGE = 180 # seconds
|
|
|
|
|
|
def add_settings(request):
|
|
context = {}
|
|
context['WWW_HOST'] = settings.WWW_HOST
|
|
context['WWW_IPV4_HOST'] = settings.WWW_IPV4_HOST
|
|
context['WWW_IPV6_HOST'] = settings.WWW_IPV6_HOST
|
|
context['SERVICE_CONTACT'] = settings.SERVICE_CONTACT # about view
|
|
context['WE_HAVE_SSL'] = settings.WE_HAVE_SSL
|
|
context['COOKIE_SECURE'] = settings.SESSION_COOKIE_SECURE or settings.CSRF_COOKIE_SECURE
|
|
return context
|
|
|
|
|
|
def remove_stale_ips(request):
|
|
"""
|
|
Check the session if there are stale IPs and if so, remove them.
|
|
"""
|
|
# XXX is a context processor is the right place for this?
|
|
s = request.session
|
|
t_now = int(time.time())
|
|
for key in ['ipv4', 'ipv6', ]:
|
|
timestamp_key = "%s_timestamp" % key
|
|
try:
|
|
timestamp = s[timestamp_key]
|
|
except KeyError:
|
|
# should be always there, initialize it:
|
|
s[key] = ''
|
|
s[timestamp_key] = t_now
|
|
else:
|
|
try:
|
|
stale = timestamp + MAX_IP_AGE < t_now
|
|
except (ValueError, TypeError):
|
|
# invalid timestamp in session
|
|
del s[timestamp_key]
|
|
else:
|
|
if stale:
|
|
logger.debug("ts: %s now: %s - killing stale %s (was: %s)" % (timestamp, t_now, key, s[key]))
|
|
# kill the IP, it is not up-to-date any more
|
|
# note: it is used to fill form fields, so set it to empty string
|
|
s[key] = ''
|
|
# update the timestamp, so we can retry after a while
|
|
s[timestamp_key] = t_now
|
|
return {}
|