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re2o/cotisations/payment_methods/comnpay/views.py

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4.6 KiB
Python

# -*- mode: python; coding: utf-8 -*-
# Re2o est un logiciel d'administration développé initiallement au Rézo Metz. Il
# se veut agnostique au réseau considéré, de manière à être installable en
# quelques clics.
#
# Copyright © 2018 Hugo Levy-Falk
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""Payment
Here are the views needed by comnpay
"""
from collections import OrderedDict
from django.urls import reverse
from django.shortcuts import redirect, get_object_or_404
from django.contrib.auth.decorators import login_required
from django.contrib import messages
from django.views.decorators.csrf import csrf_exempt
from django.utils.datastructures import MultiValueDictKeyError
from django.utils.translation import ugettext as _
from django.http import HttpResponse, HttpResponseBadRequest
from cotisations.models import Facture
from .comnpay import Transaction
from .models import ComnpayPayment
@csrf_exempt
@login_required
def accept_payment(request, factureid):
"""
The view where the user is redirected when a comnpay payment has been
accepted.
"""
invoice = get_object_or_404(Facture, id=factureid)
if invoice.valid:
messages.success(
request,
_("The payment of %(amount)s € was accepted.")
% {"amount": invoice.prix_total()},
)
# In case a cotisation was bought, inform the user, the
# cotisation time has been extended too
if any(purchase.test_membership_or_connection() for purchase in invoice.vente_set.all()):
messages.success(
request,
_(
"The subscription of %(member_name)s was extended to"
" %(end_date)s."
)
% {
"member_name": invoice.user.pseudo,
"end_date": invoice.user.end_adhesion(),
},
)
return redirect(reverse("users:profil", kwargs={"userid": invoice.user.id}))
@csrf_exempt
@login_required
def refuse_payment(request):
"""
The view where the user is redirected when a comnpay payment has been
refused.
"""
messages.error(request, _("The payment was refused."))
return redirect(reverse("users:profil", kwargs={"userid": request.user.id}))
@csrf_exempt
def ipn(request):
"""
The view called by Comnpay server to validate the transaction.
Verify that we can firmly save the user's action and notify
Comnpay with 400 response if not or with a 200 response if yes.
"""
p = Transaction()
order = ("idTpe", "idTransaction", "montant", "result", "sec")
try:
data = OrderedDict([(f, request.POST[f]) for f in order])
except MultiValueDictKeyError:
return HttpResponseBadRequest("HTTP/1.1 400 Bad Request")
idTransaction = request.POST["idTransaction"]
try:
factureid = int(idTransaction)
except ValueError:
return HttpResponseBadRequest("HTTP/1.1 400 Bad Request")
facture = get_object_or_404(Facture, id=factureid)
payment_method = get_object_or_404(ComnpayPayment, payment=facture.paiement)
if not p.validSec(data, payment_method.payment_pass):
return HttpResponseBadRequest("HTTP/1.1 400 Bad Request")
result = True if (request.POST["result"] == "OK") else False
idTpe = request.POST["idTpe"]
# Checking that the payment is actually for us.
if not idTpe == payment_method.payment_credential:
return HttpResponseBadRequest("HTTP/1.1 400 Bad Request")
# Checking that the payment is valid
if not result:
# Payment failed: Cancelling the invoice operation
# And send the response to Comnpay indicating we have well
# received the failure information.
return HttpResponse("HTTP/1.1 200 OK")
facture.valid = True
facture.save()
# Everything worked we send a reponse to Comnpay indicating that
# it's ok for them to proceed
return HttpResponse("HTTP/1.0 200 OK")