def ipn(request):
params = {'cmd': '_notify-validate'}
for k, v in request.POST.items():
params[k] = v.encode('utf-8')
response = urllib.urlopen(settings.IPN_ENDPOINT,
urllib.urlencode(params)).read()
if response == 'VERIFIED':
processor = PaymentProcessor(config_get_group(PROCESSOR_KEY))
processor.update_payment(request.POST)
return HttpResponse('OK')
raise Http404
