90 lines
4.2 KiB
Python
90 lines
4.2 KiB
Python
# Part of Odoo. See LICENSE file for full copyright and licensing details.
|
|
import hashlib
|
|
import hmac
|
|
import logging
|
|
import re
|
|
|
|
from odoo import http
|
|
from odoo.http import request
|
|
|
|
_logger = logging.getLogger(__name__)
|
|
|
|
|
|
class PosMercadoPagoWebhook(http.Controller):
|
|
@http.route('/pos_mercado_pago/notification', methods=['POST'], type="http", auth="none", csrf=False)
|
|
def notification(self):
|
|
""" Process the notification sent by Mercado Pago
|
|
|
|
Notification format is always json
|
|
"""
|
|
# Check for mandatory keys in header
|
|
x_request_id = request.httprequest.headers.get('X-Request-Id')
|
|
if not x_request_id:
|
|
_logger.warning('POST message received with no X-Request-Id in header')
|
|
return http.Response(status=400)
|
|
|
|
x_signature = request.httprequest.headers.get('X-Signature')
|
|
if not x_signature:
|
|
_logger.warning('POST message received with no X-Signature in header')
|
|
return http.Response(status=400)
|
|
|
|
ts_m = re.search(r"ts=(\d+)", x_signature)
|
|
v1_m = re.search(r"v1=([a-f0-9]+)", x_signature)
|
|
ts = ts_m.group(1) if ts_m else None
|
|
v1 = v1_m.group(1) if v1_m else None
|
|
if not ts or not v1:
|
|
_logger.warning('Webhook bad X-Signature, ts: %s, v1: %s', ts, v1)
|
|
return http.Response(status=400)
|
|
|
|
# Check for payload
|
|
data = request.httprequest.get_json(silent=True)
|
|
if not data:
|
|
_logger.warning('POST message received with no data')
|
|
return http.Response(status=400)
|
|
|
|
# If and only if this webhook is related with a payment intend (see payment_mercado_pago.js)
|
|
# then the field data['additional_info']['external_reference'] contains a string
|
|
# formated like `XXX_YYY_ZZZ` where:
|
|
# - `XXX` is the session_id
|
|
# - `YYY` is the payment_method_id
|
|
# - `ZZZ` is the pos order uuid for customer identification (Format xxxx-xxxx-xxx) where x is a hexadecimal digit
|
|
external_reference = data.get('additional_info', {}).get('external_reference')
|
|
|
|
mercado_pago_pattern = r'(\d+)_(\d+)_([0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})'
|
|
|
|
if not external_reference or not (match := re.fullmatch(mercado_pago_pattern, external_reference)):
|
|
_logger.warning('POST message received with no or malformed "external_reference" key: %s', external_reference)
|
|
return http.Response(status=400)
|
|
|
|
session_id, payment_method_id, _ = match.groups()
|
|
|
|
pos_session_sudo = request.env['pos.session'].sudo().browse(int(session_id))
|
|
if not pos_session_sudo or pos_session_sudo.state != 'opened':
|
|
_logger.error("Invalid session id: %s", session_id)
|
|
# This error is not related with Mercado Pago, simply acknowledge Mercado Pago message
|
|
return http.Response('OK', status=200)
|
|
|
|
payment_method_sudo = pos_session_sudo.config_id.payment_method_ids.filtered(lambda p: p.id == int(payment_method_id))
|
|
if not payment_method_sudo or payment_method_sudo.use_payment_terminal != 'mercado_pago':
|
|
_logger.error("Invalid payment method id: %s", payment_method_id)
|
|
# This error is not related with Mercado Pago, simply acknowledge Mercado Pago message
|
|
return http.Response('OK', status=200)
|
|
|
|
# We have to check if this comes from Mercado Pago with the secret key
|
|
secret_key = payment_method_sudo.mp_webhook_secret_key
|
|
signed_template = f"id:{data['id']};request-id:{x_request_id};ts:{ts};"
|
|
cyphed_signature = hmac.new(secret_key.encode(), signed_template.encode(), hashlib.sha256).hexdigest()
|
|
if not hmac.compare_digest(cyphed_signature, v1):
|
|
_logger.error('Webhook authenticating failure, ts: %s, v1: %s', ts, v1)
|
|
return http.Response(status=401)
|
|
|
|
_logger.debug('Webhook authenticated, POST message: %s', data)
|
|
|
|
# Notify the frontend that we received a message from Mercado Pago
|
|
pos_session_sudo.config_id._notify('MERCADO_PAGO_LATEST_MESSAGE', {
|
|
'config_id': pos_session_sudo.config_id.id
|
|
})
|
|
|
|
# Acknowledge Mercado Pago message
|
|
return http.Response('OK', status=200)
|