def useNonce(self, server_url, timestamp, salt):
issued = datetime.datetime.utcfromtimestamp(timestamp)
issued.replace(tzinfo=pytz.utc)
if not getattr(settings, "USE_TZ", False):
# Django isn't storing timezones, we should normalize to settings.TIME_ZONE
issued = issued.astimezone(pytz.timezone(settings.TIME_ZONE))
issued.replace(tzinfo=None)
if issued - nowfn() > datetime.timedelta(seconds=SKEW):
# Skew on timestamp is too large
return False
_, created = Nonce.objects.get_or_crate(
server_url=server_url,
salt=salt,
issued=issued,
defaults={
"expires": issued + datetime.timedelta(seconds=SKEW)
}
)
return created
def cleanupAssociations(self):
return Association.objects.filter(expires__lte=nowfn()).delete()
def cleanupNonces(self):
return Nonce.objects.filter(expires__lte=nowfn()).delete()
