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from django.utils.hashcompat import sha_constructor
from django.contrib.auth.models import User
from django.core.cache import cache
from django.utils.hashcompat import md5_constructor
from django.utils.http import urlquote
from django.http import HttpResponseForbidden
from django.conf import settings
def ajax_login_required(function=None):
def _dec(view_func):
def _view(request, *args, **kwargs):
if request.user.is_anonymous():
return HttpResponseForbidden()
else:
return view_func(request, *args, **kwargs)
_view.__name__ = view_func.__name__
_view.__dict__ = view_func.__dict__
_view.__doc__ = view_func.__doc__
return _view
if function is None:
return _dec
else:
return _dec(function)
def admin_only(function=None):
def _dec(view_func):
def _view(request, *args, **kwargs):
if not request.user.is_staff:
return HttpResponseForbidden()
else:
return view_func(request, *args, **kwargs)
_view.__name__ = view_func.__name__
_view.__dict__ = view_func.__dict__
_view.__doc__ = view_func.__doc__
return _view
if function is None:
return _dec
else:
return _dec(function)
def get_user(request):
if not hasattr(request, 'user'):
user = request
else:
user = request.user
if user.is_anonymous():
user = cache.get('user:%s' % settings.HOMEPAGE_USERNAME, None)
if not user:
try:
user = User.objects.get(username=settings.HOMEPAGE_USERNAME)
cache.set('user:%s' % user, user)
except User.DoesNotExist:
user = User.objects.create(username=settings.HOMEPAGE_USERNAME)
user.set_password('')
user.save()
return user
def invalidate_template_cache(fragment_name, *variables):
args = md5_constructor(u':'.join([urlquote(var) for var in variables]))
cache_key = 'template.cache.%s.%s' % (fragment_name, args.hexdigest())
cache.delete(cache_key)
def generate_secret_token(phrase, size=12):
"""Generate a (SHA1) security hash from the provided info."""
info = (phrase, settings.SECRET_KEY)
return sha_constructor("".join(info)).hexdigest()[:size]
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