109 lines
5.0 KiB
Python
109 lines
5.0 KiB
Python
# -*- coding: utf-8 -*-
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try:
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import simplejson as json
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except ImportError:
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import json
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import logging
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import pprint
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import urllib2
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import werkzeug
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from openerp import http, SUPERUSER_ID
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from openerp.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(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 reponse for a PDT verification .
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:param response str: text response, structured in the following way:
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STATUS\nkey1=value1\nkey2=value2...\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 = filter(None, response.split('\n'))
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status = lines.pop(0)
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pdt_post = dict(line.split('=', 1) for line in lines)
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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')
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cr, uid, context = request.cr, request.uid, request.context
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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_ids = request.registry['payment.transaction'].search(cr, uid, [('reference', '=', reference)], context=context)
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if tx_ids:
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tx = request.registry['payment.transaction'].browse(cr, uid, tx_ids[0], context=context)
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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'] = request.registry['ir.config_parameter'].get_param(cr, SUPERUSER_ID, 'payment_paypal.pdt_token')
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new_post['cmd'] = '_notify-synch' # command is different in PDT than IPN/DPN
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paypal_urls = request.registry['payment.acquirer']._get_paypal_urls(cr, uid, tx and tx.acquirer_id and tx.acquirer_id.environment or 'prod', context=context)
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validate_url = paypal_urls['paypal_form_url']
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urequest = urllib2.Request(validate_url, werkzeug.url_encode(new_post))
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uopen = urllib2.urlopen(urequest)
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resp = uopen.read()
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if pdt_request:
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resp, post = self._parse_pdt_response(resp)
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if resp == 'VERIFIED' or pdt_request and resp == 'SUCCESS':
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_logger.info('Paypal: validated data')
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res = request.registry['payment.transaction'].form_feedback(cr, SUPERUSER_ID, post, 'paypal', context=context)
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elif resp == 'INVALID' or pdt_request and resp == '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'])
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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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self.paypal_validate_data(**post)
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return ''
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@http.route('/payment/paypal/dpn', type='http', auth="none", methods=['POST', 'GET'])
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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")
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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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cr, uid, context = request.cr, SUPERUSER_ID, request.context
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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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