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import base64
import logging
from django.conf import settings
from django.http import HttpResponse, HttpResponseNotAllowed, HttpResponseBadRequest, HttpResponseForbidden
from django.views.decorators.csrf import csrf_exempt
from djzendesk.signals import target_callback_received
def is_authenticated(request, username, password):
"""Authenticate the request using HTTP Basic authorization"""
authenticated = False
auth = request.META['HTTP_AUTHORIZATION'].split()
if len(auth) == 2:
if auth[0].lower() == "basic":
provided_username, provided_password = base64.b64decode(auth[1]).split(':')
if username == provided_username and password == provided_password:
authenticated = True
return authenticated
def callback(request, ticket_id):
"""Handle HTTP callback requests from Zendesk"""
# Require POST. Anything else would be uncivilized.
if not request.method == 'POST':
return HttpResponseNotAllowed(['POST'])
username = getattr(settings, 'ZENDESK_CALLBACK_USERNAME', None)
password = getattr(settings, 'ZENDESK_CALLBACK_PASSWORD', None)
# Authenticate the request if credentials have been configured
if username is not None and password is not None:
if not is_authenticated(request, username, password):
return HttpResponseForbidden()
# Extract the message
if not 'message' in request.POST:
return HttpResponseBadRequest()
message = request.POST['message']"HTTP callback received from Zendesk for ticket %s: %s", ticket_id, message)
# Fire the signal to notify listeners of received target callback
target_callback_received.send(sender=None, ticket_id=ticket_id, message=message)
return HttpResponse('OK')
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