NDOJ/judge/views/mailgun.py

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2020-01-21 06:35:58 +00:00
import hashlib
import hmac
import logging
from email.utils import parseaddr
from django.conf import settings
from django.contrib.auth.models import User
from django.contrib.sites.shortcuts import get_current_site
from django.core.exceptions import PermissionDenied
from django.http import HttpResponse
from django.utils.decorators import method_decorator
from django.views.decorators.csrf import csrf_exempt
from django.views.generic import View
from registration.models import RegistrationProfile
from judge.utils.unicode import utf8bytes
logger = logging.getLogger('judge.mail.activate')
class MailgunActivationView(View):
if hasattr(settings, 'MAILGUN_ACCESS_KEY'):
def post(self, request, *args, **kwargs):
params = request.POST
timestamp = params.get('timestamp', '')
token = params.get('token', '')
signature = params.get('signature', '')
logger.debug('Received request: %s', params)
if signature != hmac.new(key=utf8bytes(settings.MAILGUN_ACCESS_KEY),
msg=utf8bytes('%s%s' % (timestamp, token)), digestmod=hashlib.sha256).hexdigest():
logger.info('Rejected request: signature: %s, timestamp: %s, token: %s', signature, timestamp, token)
raise PermissionDenied()
_, sender = parseaddr(params.get('from'))
if not sender:
logger.info('Rejected invalid sender: %s', params.get('from'))
return HttpResponse(status=406)
try:
user = User.objects.get(email__iexact=sender)
except (User.DoesNotExist, User.MultipleObjectsReturned):
logger.info('Rejected unknown sender: %s: %s', sender, params.get('from'))
return HttpResponse(status=406)
try:
registration = RegistrationProfile.objects.get(user=user)
except RegistrationProfile.DoesNotExist:
logger.info('Rejected sender without RegistrationProfile: %s: %s', sender, params.get('from'))
return HttpResponse(status=406)
if registration.activated:
logger.info('Rejected activated sender: %s: %s', sender, params.get('from'))
return HttpResponse(status=406)
key = registration.activation_key
if key in params.get('body-plain', '') or key in params.get('body-html', ''):
if RegistrationProfile.objects.activate_user(key, get_current_site(request)):
logger.info('Activated sender: %s: %s', sender, params.get('from'))
return HttpResponse('Activated', status=200)
logger.info('Failed to activate sender: %s: %s', sender, params.get('from'))
else:
logger.info('Activation key not found: %s: %s', sender, params.get('from'))
return HttpResponse(status=406)
@method_decorator(csrf_exempt)
def dispatch(self, request, *args, **kwargs):
return super(MailgunActivationView, self).dispatch(request, *args, **kwargs)