paypalipn

paypalipn.py

# -*- coding: utf-8 -*-
from django.http import HttpResponse
from django.views.decorators.csrf import csrf_exempt
from django.views.decorators.http import require_POST
from raven.contrib.django.models import get_client
from registration.forms import IPNForm
import logging
import urllib2

URLS = {
    True:'https://www.paypal.com/cgi-bin/webscr',
    False: 'https://www.sandbox.paypal.com/cgi-bin/webscr',
}


@require_POST
@csrf_exempt
def ipn(request):
    client = get_client()
    client.captureMessage("IPN:request", data={'level': logging.INFO})
    form = IPNForm(request.POST)
    if form.is_valid():
        client.captureMessage("IPN:form valid", data={'level': logging.INFO})
        data = form.clean()
        if verify(request, data.get('test_ipn', '-1') == '1', client):
            client.captureMessage("IPN:verified", data={'level': logging.INFO})
            form.save()
        else:
            client.captureMessage("IPN:verification failed", data={'level': logging.INFO})
    else:
        client.captureMessage("IPN:form invalid:%s" % form.errors.as_text(), data={'level': logging.INFO})
    return HttpResponse('ok')

def verify(request, is_test, client):
    client.captureMessage('IPN:verify:%s' % is_test)
    data = 'cmd=_notify-validate&%s' % request.raw_post_data
    client.captureMessage('IPN:data:%s' % data)
    url = URLS[is_test]
    client.captureMessage('IPN:url:%s' % url)
    content = urllib2.urlopen(url, data).read()
    client.captureMessage('IPN:verify:response:%s' % content)
    return content.strip() == 'VERIFIED'