117 lines
4.9 KiB
Python
117 lines
4.9 KiB
Python
# -*- coding: utf-8 -*-
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import json
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import logging
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import pprint
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import requests
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import werkzeug
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from werkzeug import urls
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from odoo import http
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from odoo.addons.payment.models.payment_acquirer import ValidationError
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from odoo.http import request
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_logger = logging.getLogger(__name__)
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class PaypalController(http.Controller):
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_notify_url = '/payment/paypal/ipn/'
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_return_url = '/payment/paypal/dpn/'
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_cancel_url = '/payment/paypal/cancel/'
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def _get_return_url(self, **post):
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""" Extract the return URL from the data coming from paypal. """
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return_url = post.pop('return_url', '')
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if not return_url:
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custom = json.loads(urls.url_unquote_plus(post.pop('custom', False) or post.pop('cm', False) or '{}'))
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return_url = custom.get('return_url', '/')
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return return_url
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def _parse_pdt_response(self, response):
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""" Parse a text response for a PDT verification.
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:param str response: text response, structured in the following way:
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STATUS\nkey1=value1\nkey2=value2...\n
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or STATUS\nError message...\n
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:rtype tuple(str, dict)
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:return: tuple containing the STATUS str and the key/value pairs
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parsed as a dict
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"""
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lines = [line for line in response.split('\n') if line]
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status = lines.pop(0)
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pdt_post = {}
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for line in lines:
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split = line.split('=', 1)
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if len(split) == 2:
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pdt_post[split[0]] = urls.url_unquote_plus(split[1])
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else:
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_logger.warning('Paypal: error processing pdt response: %s', line)
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return status, pdt_post
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def paypal_validate_data(self, **post):
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""" Paypal IPN: three steps validation to ensure data correctness
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- step 1: return an empty HTTP 200 response -> will be done at the end
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by returning ''
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- step 2: POST the complete, unaltered message back to Paypal (preceded
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by cmd=_notify-validate or _notify-synch for PDT), with same encoding
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- step 3: paypal send either VERIFIED or INVALID (single word) for IPN
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or SUCCESS or FAIL (+ data) for PDT
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Once data is validated, process it. """
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res = False
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new_post = dict(post, cmd='_notify-validate', charset='utf-8')
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reference = post.get('item_number')
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tx = None
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if reference:
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tx = request.env['payment.transaction'].search([('reference', '=', reference)])
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paypal_urls = request.env['payment.acquirer']._get_paypal_urls(tx and tx.acquirer_id.environment or 'prod')
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pdt_request = bool(new_post.get('amt')) # check for spefific pdt param
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if pdt_request:
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# this means we are in PDT instead of DPN like before
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# fetch the PDT token
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new_post['at'] = tx and tx.acquirer_id.paypal_pdt_token or ''
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new_post['cmd'] = '_notify-synch' # command is different in PDT than IPN/DPN
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validate_url = paypal_urls['paypal_form_url']
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urequest = requests.post(validate_url, new_post)
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urequest.raise_for_status()
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resp = urequest.text
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if pdt_request:
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resp, post = self._parse_pdt_response(resp)
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if resp in ['VERIFIED', 'SUCCESS']:
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_logger.info('Paypal: validated data')
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res = request.env['payment.transaction'].sudo().form_feedback(post, 'paypal')
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elif resp in ['INVALID', 'FAIL']:
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_logger.warning('Paypal: answered INVALID/FAIL on data verification')
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else:
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_logger.warning('Paypal: unrecognized paypal answer, received %s instead of VERIFIED/SUCCESS or INVALID/FAIL (validation: %s)' % (resp, 'PDT' if pdt_request else 'IPN/DPN'))
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return res
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@http.route('/payment/paypal/ipn/', type='http', auth='none', methods=['POST'], csrf=False)
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def paypal_ipn(self, **post):
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""" Paypal IPN. """
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_logger.info('Beginning Paypal IPN form_feedback with post data %s', pprint.pformat(post)) # debug
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try:
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self.paypal_validate_data(**post)
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except ValidationError:
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_logger.exception('Unable to validate the Paypal payment')
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return ''
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@http.route('/payment/paypal/dpn', type='http', auth="none", methods=['POST', 'GET'], csrf=False)
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def paypal_dpn(self, **post):
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""" Paypal DPN """
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_logger.info('Beginning Paypal DPN form_feedback with post data %s', pprint.pformat(post)) # debug
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return_url = self._get_return_url(**post)
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self.paypal_validate_data(**post)
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return werkzeug.utils.redirect(return_url)
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@http.route('/payment/paypal/cancel', type='http', auth="none", csrf=False)
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def paypal_cancel(self, **post):
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""" When the user cancels its Paypal payment: GET on this route """
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_logger.info('Beginning Paypal cancel with post data %s', pprint.pformat(post)) # debug
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return_url = self._get_return_url(**post)
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return werkzeug.utils.redirect(return_url)
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