304 lines
11 KiB
Python
304 lines
11 KiB
Python
# -*- coding: utf-8
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import codecs
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from collections import OrderedDict
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import datetime
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import logging
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import hashlib
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import hmac
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from decimal import Decimal, ROUND_DOWN
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from Crypto.Signature import PKCS1_v1_5
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from Crypto.PublicKey import RSA
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from Crypto.Hash import SHA
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import six
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from six.moves.urllib import parse as urlparse
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from six.moves.urllib import parse as urllib
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import base64
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from gettext import gettext as _
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import string
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import warnings
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from .common import (PaymentCommon, PaymentResponse, FORM, PAID, ERROR, Form,
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ORDERID_TRANSACTION_SEPARATOR, ResponseError, force_text)
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__all__ = ['sign', 'Payment']
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PAYBOX_KEY = '''-----BEGIN PUBLIC KEY-----
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MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDe+hkicNP7ROHUssGNtHwiT2Ew
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HFrSk/qwrcq8v5metRtTTFPE/nmzSkRnTs3GMpi57rBdxBBJW5W9cpNyGUh0jNXc
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VrOSClpD5Ri2hER/GcNrxVRP7RlWOqB1C03q4QYmwjHZ+zlM4OUhCCAtSWflB4wC
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Ka1g88CjFwRw/PB9kwIDAQAB
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-----END PUBLIC KEY-----'''
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VARS = {
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'PBX_SITE': 'Numéro de site (fourni par Paybox)',
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'PBX_RANG': 'Numéro de rang (fourni par Paybox)',
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'PBX_IDENTIFIANT': 'Identifiant interne (fourni par Paybox)',
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'PBX_TOTAL': 'Montant total de la transaction',
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'PBX_DEVISE': 'Devise de la transaction',
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'PBX_CMD': 'Référence commande côté commerçant',
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'PBX_PORTEUR': 'Adresse E - mail de l’acheteur',
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'PBX_RETOUR': 'Liste des variables à retourner par Paybox',
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'PBX_HASH': 'Type d’algorit hme de hachage pour le calcul de l’empreinte',
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'PBX_TIME': 'Horodatage de la transaction',
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'PBX_HMAC': 'Signature calculée avec la clé secrète',
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}
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PAYBOX_ERROR_CODES = {
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'00000': 'Opération réussie.',
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'00001': 'La connexion au centre d’autorisation a échoué ou une '
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'erreur interne est survenue. Dans ce cas, il est souhaitable de faire '
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'une tentative sur le site secondaire : tpeweb1.paybox.com.',
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'001xx': 'Paiement refusé par le centre d’autorisation [voir '
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'§12.112.1 Codes réponses du centre d’autorisationCodes réponses du '
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'centre d’autorisation]. En cas d’autorisation de la transaction par '
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'le centre d’autorisation de la banque ou de l’établissement financier '
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'privatif, le code erreur “00100” sera en fait remplacé directement '
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'par “00000”.',
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'00003': 'Erreur Paybox. Dans ce cas, il est souhaitable de faire une '
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'tentative sur le site secondaire FQDN tpeweb1.paybox.com.',
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'00004': 'Numéro de porteur ou cryptogramme visuel invalide.',
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'00006': 'Accès refusé ou site/rang/identifiant incorrect.',
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'00008': 'Date de fin de validité incorrecte.',
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'00009': 'Erreur de création d’un abonnement.',
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'00010': 'Devise inconnue.',
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'00011': 'Montant incorrect.',
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'00015': 'Paiement déjà effectué.',
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'00016': 'Abonné déjà existant (inscription nouvel abonné). Valeur '
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'‘U’ de la variable PBX_RETOUR.',
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'00021': 'Carte non autorisée.',
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'00029': 'Carte non conforme. Code erreur renvoyé lors de la '
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'documentation de la variable « PBX_EMPREINTE ».',
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'00030': 'Temps d’attente > 15 mn par l’internaute/acheteur au niveau '
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'de la page de paiements.',
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'00031': 'Réservé',
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'00032': 'Réservé',
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'00033': 'Code pays de l’adresse IP du navigateur de l’acheteur non '
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'autorisé.',
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'00040': 'Opération sans authentification 3-DSecure, bloquée par le '
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'filtre.',
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'99999': 'Opération en attente de validation par l’émetteur du moyen '
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'de paiement.',
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}
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ALGOS = {
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'SHA512': hashlib.sha512,
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'SHA256': hashlib.sha256,
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'SHA384': hashlib.sha384,
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'SHA224': hashlib.sha224,
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}
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URLS = {
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'test':
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'https://preprod-tpeweb.paybox.com/cgi/MYchoix_pagepaiement.cgi',
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'prod':
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'https://tpeweb.paybox.com/cgi/MYchoix_pagepaiement.cgi',
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'backup':
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'https://tpeweb1.paybox.com/cgi/MYchoix_pagepaiement.cgi',
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}
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def sign(data, key):
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'''Take a list of tuple key, value and sign it by building a string to
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sign.
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'''
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logger = logging.getLogger(__name__)
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algo = None
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logger.debug('signature key %r', key)
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logger.debug('signed data %r', data)
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for k, v in data:
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if k == 'PBX_HASH' and v in ALGOS:
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algo = ALGOS[v]
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break
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assert algo, 'Missing or invalid PBX_HASH'
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tosign = ['%s=%s' % (k, force_text(v)) for k, v in data]
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tosign = '&'.join(tosign)
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logger.debug('signed string %r', tosign)
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tosign = tosign.encode('utf-8')
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signature = hmac.new(key, tosign, algo)
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return tuple(data) + (('PBX_HMAC', signature.hexdigest().upper()),)
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def verify(data, signature, key=PAYBOX_KEY):
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'''Verify signature using SHA1withRSA by Paybox'''
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key = RSA.importKey(key)
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h = SHA.new(data)
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verifier = PKCS1_v1_5.new(key)
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return verifier.verify(h, signature)
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class Payment(PaymentCommon):
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'''Paybox backend for eopayment.
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If you want to handle Instant Payment Notification, you must pass
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provide a automatic_return_url option specifying the URL of the
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callback endpoint.
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Email is mandatory to emit payment requests with paybox.
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IP adresses to authorize:
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IN OUT
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test 195.101.99.73 195.101.99.76
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production 194.2.160.66 194.2.122.158
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backup 195.25.7.146 195.25.7.166
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'''
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callback = None
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description = {
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'caption': _('Paybox'),
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'parameters': [
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{
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'name': 'normal_return_url',
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'caption': _('Normal return URL'),
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'default': '',
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'required': False,
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},
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{
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'name': 'automatic_return_url',
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'caption': _('Automatic return URL'),
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'required': False,
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},
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{
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'name': 'platform',
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'caption': _('Plateforme cible'),
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'default': 'test',
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'validation': lambda x: isinstance(x, basestring) and
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x.lower() in ('test', 'prod'),
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},
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{
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'name': 'site',
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'caption': _('Numéro de site'),
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'required': True,
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'validation': lambda x: isinstance(x, basestring) and
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x.isdigit() and len(x) == 7,
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},
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{
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'name': 'rang',
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'caption': _('Numéro de rang'),
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'required': True,
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'validation': lambda x: isinstance(x, basestring) and
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x.isdigit() and len(x) == 2,
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},
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{
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'name': 'identifiant',
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'caption': _('Identifiant'),
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'required': True,
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'validation': lambda x: isinstance(x, basestring) and
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x.isdigit() and (0 < len(x) < 10),
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},
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{
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'name': 'shared_secret',
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'caption': _('Secret partagé'),
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'validation': lambda x: isinstance(x, str) and
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all(a.lower() in '0123456789ABCDEF' for a in x),
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'required': True,
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},
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{
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'name': 'devise',
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'caption': _('Devise'),
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'default': '978',
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'choices': (
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('978', 'Euro'),
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),
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},
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{
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'name': 'callback',
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'caption': _('Callback URL'),
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'deprecated': True,
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},
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]
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}
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def request(self, amount, email, name=None, orderid=None, **kwargs):
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d = OrderedDict()
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d['PBX_SITE'] = force_text(self.site)
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d['PBX_RANG'] = force_text(self.rang).strip()[-2:]
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d['PBX_IDENTIFIANT'] = force_text(self.identifiant)
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d['PBX_TOTAL'] = (amount * Decimal(100)).to_integral_value(ROUND_DOWN)
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d['PBX_DEVISE'] = force_text(self.devise)
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transaction_id = kwargs.get('transaction_id') or \
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self.transaction_id(12, string.digits, 'paybox', self.site,
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self.rang, self.identifiant)
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d['PBX_CMD'] = force_text(transaction_id)
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# prepend order id command reference
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if orderid:
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d['PBX_CMD'] = orderid + ORDERID_TRANSACTION_SEPARATOR + d['PBX_CMD']
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d['PBX_PORTEUR'] = force_text(email)
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d['PBX_RETOUR'] = 'montant:M;reference:R;code_autorisation:A;erreur:E;signature:K'
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d['PBX_HASH'] = 'SHA512'
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d['PBX_TIME'] = kwargs.get('time') or (force_text(datetime.datetime.utcnow().isoformat('T')).split('.')[0]+'+00:00')
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d['PBX_ARCHIVAGE'] = transaction_id
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if self.normal_return_url:
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d['PBX_EFFECTUE'] = self.normal_return_url
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d['PBX_REFUSE'] = self.normal_return_url
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d['PBX_ANNULE'] = self.normal_return_url
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d['PBX_ATTENTE'] = self.normal_return_url
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automatic_return_url = self.automatic_return_url
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if not automatic_return_url and self.callback:
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warnings.warn("callback option is deprecated, "
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"use automatic_return_url", DeprecationWarning)
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automatic_return_url = self.callback
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if automatic_return_url:
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d['PBX_REPONDRE_A'] = force_text(automatic_return_url)
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d = d.items()
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if six.PY3:
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shared_secret = codecs.decode(bytes(self.shared_secret, 'ascii'), 'hex')
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else:
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shared_secret = codecs.decode(bytes(self.shared_secret), 'hex')
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d = sign(d, shared_secret)
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url = URLS[self.platform]
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fields = []
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for k, v in d:
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fields.append({
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'type': u'hidden',
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'name': force_text(k),
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'value': force_text(v),
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})
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form = Form(url, 'POST', fields, submit_name=None,
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submit_value=u'Envoyer', encoding='utf-8')
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return transaction_id, FORM, form
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def response(self, query_string, callback=False, **kwargs):
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d = urlparse.parse_qs(query_string, True, False)
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if not set(d) >= set(['erreur', 'reference']):
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raise ResponseError()
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signed = False
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if 'signature' in d:
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sig = d['signature'][0]
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sig = base64.b64decode(sig)
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data = []
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if callback:
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for key in ('montant', 'reference', 'code_autorisation',
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'erreur'):
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data.append('%s=%s' % (key, urllib.quote(d[key][0])))
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else:
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for key, value in urlparse.parse_qsl(query_string, True, True):
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if key == 'signature':
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break
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data.append('%s=%s' % (key, urllib.quote(value)))
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data = '&'.join(data)
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signed = verify(data, sig)
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if d['erreur'][0] == '00000':
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result = PAID
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else:
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result = ERROR
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for l in (5, 3):
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prefix = d['erreur'][0][:l]
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suffix = 'x' * (5-l)
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bank_status = PAYBOX_ERROR_CODES.get(prefix + suffix)
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if bank_status is not None:
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break
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orderid = d['reference'][0]
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# decode order id from returned reference
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if ORDERID_TRANSACTION_SEPARATOR in orderid:
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orderid, transaction_id = orderid.split(ORDERID_TRANSACTION_SEPARATOR, 1)
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return PaymentResponse(
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order_id=orderid,
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signed=signed,
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bank_data=d,
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result=result,
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bank_status=bank_status)
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