source: main/waeup.custom/trunk/src/waeup/custom/interswitch/browser.py @ 7898

Last change on this file since 7898 was 7898, checked in by Henrik Bettermann, 13 years ago

Add webservice functions.
  • Property svn:keywords set to Id
File size: 10.2 KB
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1## $Id: browser.py 7898 2012-03-16 10:06:59Z henrik $
2##
3## Copyright (C) 2012 Uli Fouquet & Henrik Bettermann
4## This program is free software; you can redistribute it and/or modify
5## it under the terms of the GNU General Public License as published by
6## the Free Software Foundation; either version 2 of the License, or
7## (at your option) any later version.
8##
9## This program is distributed in the hope that it will be useful,
10## but WITHOUT ANY WARRANTY; without even the implied warranty of
11## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12## GNU General Public License for more details.
13##
14## You should have received a copy of the GNU General Public License
15## along with this program; if not, write to the Free Software
16## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17##
18from datetime import datetime
19import httplib
20import urllib
21from xml.dom.minidom import parseString
22import grok
23from waeup.kofa.browser.layout import KofaPage, UtilityView
24from waeup.kofa.accesscodes import create_accesscode
25from waeup.kofa.students.interfaces import IStudentOnlinePayment
26from waeup.kofa.students.browser import write_log_message
27from waeup.kofa.students.viewlets import RequestCallbackActionButton
28from waeup.custom.interfaces import MessageFactory as _
29
30PRODUCT_ID = '57'
31SITE_NAME = 'xyz.waeup.org'
32PROVIDER_ACCT = '2345'
33PROVIDER_BANK_ID = '8'
34PROVIDER_ITEM_NAME = 'Kofa Provider Fee'
35INSTITUTION_ACCT = '1234'
36INSTITUTION_BANK_ID = '9'
37INSTITUTION_NAME = 'Sample University'
38CURRENCY = '566'
39PAY_ITEM_ID = '5700'
40QUERY_URL =   'https://testwebpay.interswitchng.com/test_paydirect/services/TransactionQueryURL.aspx'
41POST_ACTION = 'https://testwebpay.interswitchng.com/test_paydirect/webpay/pay.aspx'
42
43HOST = 'testwebpay.interswitchng.com'
44URL = '/test_paydirect/services/TransactionQueryWs.asmx'
45httplib.HTTPConnection.debuglevel = 0
46
47def SOAP_post(soap_action,xml):
48    """Handles making the SOAP request.
49
50    Further reading:
51    http://testwebpay.interswitchng.com/test_paydirect/services/TransactionQueryWs.asmx?op=getTransactionData
52    """
53    h = httplib.HTTPConnection(HOST)
54    headers={
55        'Host':HOST,
56        'Content-Type':'text/xml; charset=utf-8',
57        'Content-Length':len(xml),
58        'SOAPAction':'"%s"' % soap_action,
59    }
60    h.request('POST', URL, body=xml,headers=headers)
61    r = h.getresponse()
62    d = r.read()
63    if r.status!=200:
64        raise ValueError('Error connecting: %s, %s' % (r.status, r.reason))
65    return d
66
67def get_SOAP_response(product_id, transref):
68    xml="""\
69<?xml version="1.0" encoding="utf-8"?>
70<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
71  <soap:Body>
72    <getTransactionData xmlns="http://tempuri.org/">
73      <product_id>%s</product_id>
74      <trans_ref>%s</trans_ref>
75    </getTransactionData>
76  </soap:Body>
77</soap:Envelope>""" % (product_id, transref)
78    result_xml=SOAP_post("http://tempuri.org/getTransactionData",xml)
79    doc=parseString(result_xml)
80    response=doc.getElementsByTagName('getTransactionDataResult')[0].firstChild.data
81    return response
82
83class InterswitchActionButton(RequestCallbackActionButton):
84    grok.order(2)
85    icon = 'actionicon_pay.png'
86    text = _('CollegePAY')
87    target = 'goto_interswitch'
88
89    @property
90    def target_url(self):
91        if self.context.p_state != 'unpaid':
92            return ''
93        return self.view.url(self.view.context, self.target)
94
95class InterswitchRequestCallbackActionButton(RequestCallbackActionButton):
96    grok.order(3)
97    icon = 'actionicon_call.png'
98    text = _('Request CollegePAY callback')
99
100    def target_url(self):
101        if self.context.p_state == 'paid':
102            return ''
103        site_redirect_url = self.view.url(self.view.context, 'callback')
104        args = {
105            'transRef':self.context.p_id,
106            'prodID':PRODUCT_ID,
107            'redirectURL':site_redirect_url}
108        return QUERY_URL + '?%s' % urllib.urlencode(args)
109
110class InterswitchPage(KofaPage):
111    """ View which sends a POST request to the Interswitch
112    CollegePAY payment gateway.
113    """
114    grok.context(IStudentOnlinePayment)
115    grok.name('goto_interswitch')
116    grok.template('goto_interswitch')
117    grok.require('waeup.payStudent')
118    label = _('Submit data to CollegePAY (Interswitch Payment Gateway)')
119    submit_button = _('Submit')
120    action = POST_ACTION
121    site_name = SITE_NAME
122    currency = CURRENCY
123    pay_item_id = PAY_ITEM_ID
124    product_id = PRODUCT_ID
125
126    def update(self):
127        if self.context.p_state != 'unpaid':
128            self.flash(_("Payment ticket can't be re-send to CollegePAY."))
129            self.redirect(self.url(self.context, '@@index'))
130            return
131        self.student = self.context.getStudent()
132        self.amount = (self.context.amount_auth + self.context.surcharge_1 +
133            self.context.surcharge_2 + self.context.surcharge_3)
134        self.amount_100 = 100 * self.amount
135        self.local_date_time = str(self.context.creation_date)
136        self.site_redirect_url = self.url(self.context, 'callback')
137        certificate = getattr(self.student['studycourse'],'certificate',None)
138        xmldict = {}
139        if certificate is not None:
140            xmldict['department'] = certificate.__parent__.__parent__.code
141            xmldict['faculty'] = certificate.__parent__.__parent__.__parent__.code
142        else:
143            xmldict['department'] = None
144            xmldict['faculty'] = None
145        xmldict['detail_ref'] = self.context.p_id
146        xmldict['provider_amt'] = 100 * self.context.surcharge_1
147        xmldict['provider_acct'] = PROVIDER_ACCT
148        xmldict['provider_bank_id'] = PROVIDER_BANK_ID
149        xmldict['provider_item_name'] = PROVIDER_ITEM_NAME
150        xmldict['institution_amt'] = 100 * self.context.amount_auth
151        xmldict['institution_acct'] = INSTITUTION_ACCT
152        xmldict['institution_bank_id'] = INSTITUTION_BANK_ID
153        xmldict['institution_item_name'] = self.context.p_category
154        xmldict['institution_name'] = INSTITUTION_NAME
155        # Interswitch amount is not part of the xml data
156        xmltext = """<payment_item_detail>
157<item_details detail_ref="%(detail_ref)s" college="%(institution_name)s" department="%(department)s" faculty="%(faculty)s">
158<item_detail item_id="1" item_name="%(institution_item_name)s" item_amt="%(institution_amt)d" bank_id="%(institution_bank_id)s" acct_num="%(institution_acct)s" />
159<item_detail item_id="2" item_name="%(provider_item_name)s" item_amt="%(provider_amt)d" bank_id="%(provider_bank_id)s" acct_num="%(provider_acct)s" />
160</item_details>
161</payment_item_detail>""" % xmldict
162        self.xml_data = """<input type="hidden" name="xml_data" value='%s'  />""" % xmltext
163        return
164
165class OnlinePaymentCallbackPage(UtilityView, grok.View):
166    """ Callback view for the CollegePAY gateway
167    """
168    grok.context(IStudentOnlinePayment)
169    grok.name('callback')
170    grok.require('waeup.payStudent')
171
172    # This view is not yet working for offline querying transactions
173    # since the query string differs from the query string sent after
174    # posting transactions. This Interswitch bug must be removed first.
175    # Alternatively, we could use the webservice only and replace
176    # the RequestCallbackActionButton by a RequestWebserviceActionButton
177
178    def update(self):
179        if self.context.p_state == 'paid':
180            self.flash(_('This ticket has already been paid.'))
181            return
182        student = self.context.getStudent()
183        query = self.request.form
184        # Should be logged instead of printed
185        print query
186        if query.get('resp', None) != '00':
187            self.flash(_('Unsuccessful callback: ${a}',
188                mapping = {'a': query.get('desc', _('Incomplete query string.'))}))
189            write_log_message(self,'invalid callback: %s' % self.context.p_id)
190            self.context.r_card_num = query.get('cardNum', None)
191            self.context.r_code = query.get('resp', None)
192            self.context.p_state = 'failed'
193            return
194
195        if query.get('apprAmt', None) != str(self.context.amount_auth):
196            self.flash(_('Wrong amount'))
197            write_log_message(self,'wrong amount: %s' % self.context.p_id)
198            self.context.r_card_num = query.get('cardNum', None)
199            self.context.r_code = query.get('resp', None)
200            self.context.p_state = 'failed'
201            return
202
203        # Add webservice validation
204        validation_list = get_SOAP_response(
205            PRODUCT_ID, self.context.p_id).split(':')
206        # Validation does not make sense yet since the query string
207        # formats are conflicting.
208        print validation_list
209
210        write_log_message(self,'valid callback: %s' % self.context.p_id)
211        self.context.r_amount_approved = self.context.amount_auth
212        self.context.r_card_num = query.get('cardNum', None)
213        self.context.r_code = query.get('resp', None)
214        self.context.r_desc = query.get('desc', None)
215        self.context.r_pay_reference  = query.get('payRef', None)
216        self.context.p_state = 'paid'
217        self.context.payment_date = datetime.now()
218
219        if self.context.p_category == 'clearance':
220            # Create CLR access code
221            pin, error = create_accesscode('CLR',0,student.student_id)
222            if error:
223                self.flash(_('Valid callback received. ${a}',
224                    mapping = {'a':error}))
225                return
226            self.context.ac = pin
227        elif self.context.p_category == 'schoolfee':
228            # Create SFE access code
229            pin, error = create_accesscode('SFE',0,student.student_id)
230            if error:
231                self.flash(_('Valid callback received. ${a}',
232                    mapping = {'a':error}))
233                return
234            self.context.ac = pin
235        elif self.context.p_category == 'bed_allocation':
236            # Create HOS access code
237            pin, error = create_accesscode('HOS',0,student.student_id)
238            if error:
239                self.flash(_('Valid callback received. ${a}',
240                    mapping = {'a':error}))
241                return
242            self.context.ac = pin
243        self.flash(_('Valid callback received.'))
244        return
245
246    def render(self):
247        self.redirect(self.url(self.context, '@@index'))
248        return
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