cas_provider/tests.py

   1 from __future__ import unicode_literals
   2 from io import StringIO
   3 from xml import etree
   4 from xml.etree import ElementTree
   5 import cas_provider
   6 from cas_provider.attribute_formatters import CAS, NSMAP
   7 from cas_provider.models import ServiceTicket
   8 from cas_provider.signals import cas_collect_custom_attributes
   9 from cas_provider.views import _cas2_sucess_response, INVALID_TICKET, _cas2_error_response, generate_proxy_granting_ticket
  10 from django.contrib.auth.models import User, UserManager
  11 from django.core.urlresolvers import reverse
  12 from django.test import TestCase
  13 from django.conf import settings
  14
  15 try:
  16     from urllib.parse import urlparse, parse_qsl, parse_qs
  17     from urllib import request
  18 except:
  19     from urlparse import urlparse, parse_qsl, parse_qs
  20     import urllib2 as request
  21
  22
  23
  24
  25 dummy_urlopen_url = None
  26
  27
  28 def dummy_urlopen(url):
  29     cas_provider.tests.dummy_urlopen_url = url
  30     pass
  31
  32 class ViewsTest(TestCase):
  33
  34     fixtures = ['cas_users', ]
  35
  36
  37
  38     def setUp(self):
  39         self.service = 'http://example.com/'
  40
  41
  42     def test_successful_login_with_proxy(self):
  43         request.urlopen = dummy_urlopen # monkey patching request.urlopen so that the testcase doesnt really opens a url
  44         proxyTarget = "http://my.sweet.service"
  45
  46         response = self._login_user('root', '123')
  47         response = self._validate_cas2(response, True, proxyTarget )
  48
  49         # Test: I'm acting as the service that will call another service
  50         # Step 1: Get the proxy granting ticket
  51         responseXml = ElementTree.parse(StringIO(response.content.decode('utf-8')))
  52         auth_success = responseXml.find(CAS + 'authenticationSuccess', namespaces=NSMAP)
  53         pgt = auth_success.find(CAS + "proxyGrantingTicket", namespaces=NSMAP)
  54         user = auth_success.find(CAS + "user", namespaces=NSMAP)
  55         self.assertEqual('root', user.text)
  56         self.assertIsNotNone(pgt.text)
  57         self.assertTrue(pgt.text.startswith('PGTIOU'))
  58
  59         pgtId = parse_qs(urlparse(cas_provider.tests.dummy_urlopen_url).query)['pgtId']
  60
  61         #Step 2: Get the actual proxy ticket
  62         proxyTicketResponse = self.client.get(reverse('proxy'), {'targetService': proxyTarget, 'pgt': pgtId}, follow=False)
  63         proxyTicketResponseXml = ElementTree.parse(StringIO(proxyTicketResponse.content))
  64         self.assertIsNotNone(proxyTicketResponseXml.find(CAS + "proxySuccess", namespaces=NSMAP))
  65         self.assertIsNotNone(proxyTicketResponseXml.find(CAS + "proxySuccess/cas:proxyTicket", namespaces=NSMAP))
  66         proxyTicket = proxyTicketResponseXml.find(CAS + "proxySuccess/cas:proxyTicket", namespaces=NSMAP);
  67
  68         #Step 3: I have the proxy ticket I can talk to some other backend service as the currently logged in user!
  69         proxyValidateResponse = self.client.get(reverse('cas_proxy_validate'), {'ticket': proxyTicket.text, 'service': proxyTarget})
  70         proxyValidateResponseXml = ElementTree.parse(StringIO(proxyValidateResponse.content))
  71
  72         auth_success_2 = proxyValidateResponseXml.find(CAS + 'authenticationSuccess', namespaces=NSMAP)
  73         user_2 = auth_success.find(CAS + "user", namespaces=NSMAP)
  74         proxies_1  = auth_success_2.find(CAS + "proxies")
  75         self.assertIsNone(proxies_1) # there are no proxies. I am issued by a Service Ticket
  76
  77         self.assertEqual(user.text, user_2.text)
  78
  79
  80     def test_successful_proxy_chaining(self):
  81         request.urlopen = dummy_urlopen # monkey patching request.urlopen so that the testcase doesnt really opens a url
  82         proxyTarget_1 = "http://my.sweet.service_1"
  83         proxyTarget_2 = "http://my.sweet.service_2"
  84
  85         response = self._login_user('root', '123')
  86         response = self._validate_cas2(response, True, proxyTarget_1 )
  87
  88         # Test: I'm acting as the service that will call another service
  89         # Step 1: Get the proxy granting ticket
  90         responseXml = ElementTree.parse(StringIO(response.content.decode('utf-8')))
  91         auth_success_1 = responseXml.find(CAS + 'authenticationSuccess', namespaces=NSMAP)
  92         pgt_1 = auth_success_1.find(CAS + "proxyGrantingTicket", namespaces=NSMAP)
  93         user_1 = auth_success_1.find(CAS + "user", namespaces=NSMAP)
  94         self.assertEqual('root', user_1.text)
  95         self.assertIsNotNone(pgt_1.text)
  96         self.assertTrue(pgt_1.text.startswith('PGTIOU'))
  97
  98         pgtId_1 = parse_qs(urlparse(cas_provider.tests.dummy_urlopen_url).query)['pgtId']
  99
 100         #Step 2: Get the actual proxy ticket
 101         proxyTicketResponse_1 = self.client.get(reverse('proxy'), {'targetService': proxyTarget_1, 'pgt': pgtId_1}, follow=False)
 102         proxyTicketResponseXml_1 = ElementTree.parse(StringIO(proxyTicketResponse_1.content))
 103         self.assertIsNotNone(proxyTicketResponseXml_1.find(CAS + "proxySuccess", namespaces=NSMAP))
 104         self.assertIsNotNone(proxyTicketResponseXml_1.find(CAS + "proxySuccess/cas:proxyTicket", namespaces=NSMAP))
 105         proxyTicket_1 = proxyTicketResponseXml_1.find(CAS + "proxySuccess/cas:proxyTicket", namespaces=NSMAP);
 106
 107         #Step 3: I'm backend service 1 - I have the proxy ticket - I want to talk to back service 2
 108         #
 109         proxyValidateResponse_1 = self.client.get(reverse('cas_proxy_validate'), {'ticket': proxyTicket_1.text, 'service': proxyTarget_1, 'pgtUrl': proxyTarget_2})
 110         proxyValidateResponseXml_1 = ElementTree.parse(StringIO(proxyValidateResponse_1.content))
 111
 112         auth_success_2 = proxyValidateResponseXml_1.find(CAS + 'authenticationSuccess', namespaces=NSMAP)
 113         user_2 = auth_success_2.find(CAS + "user", namespaces=NSMAP)
 114
 115         proxies_1  = auth_success_2.find(CAS + "proxies")
 116         self.assertIsNone(proxies_1) # there are no proxies. I am issued by a Service Ticket
 117         self.assertIsNotNone(auth_success_2)
 118         self.assertEqual('root', user_2.text)
 119
 120         pgt_2 = auth_success_2.find(CAS + "proxyGrantingTicket", namespaces=NSMAP)
 121         user = auth_success_2.find(CAS + "user", namespaces=NSMAP)
 122         self.assertEqual('root', user.text)
 123         self.assertIsNotNone(pgt_2.text)
 124         self.assertTrue(pgt_2.text.startswith('PGTIOU'))
 125
 126         pgtId_2 = parse_qs(urlparse(cas_provider.tests.dummy_urlopen_url).query)['pgtId']
 127
 128         #Step 4: Get the second proxy ticket
 129         proxyTicketResponse_2 = self.client.get(reverse('proxy'), {'targetService': proxyTarget_2, 'pgt': pgtId_2})
 130         proxyTicketResponseXml_2 = ElementTree.parse(StringIO(proxyTicketResponse_2.content))
 131         self.assertIsNotNone(proxyTicketResponseXml_2.find(CAS + "proxySuccess", namespaces=NSMAP))
 132         self.assertIsNotNone(proxyTicketResponseXml_2.find(CAS + "proxySuccess/cas:proxyTicket", namespaces=NSMAP))
 133         proxyTicket_2 = proxyTicketResponseXml_2.find(CAS + "proxySuccess/cas:proxyTicket", namespaces=NSMAP)
 134
 135         proxyValidateResponse_3 = self.client.get(reverse('cas_proxy_validate'), {'ticket': proxyTicket_2.text, 'service': proxyTarget_2, 'pgtUrl': None})
 136         proxyValidateResponseXml_3 = ElementTree.parse(StringIO(proxyValidateResponse_3.content))
 137
 138         auth_success_3 = proxyValidateResponseXml_3.find(CAS + 'authenticationSuccess', namespaces=NSMAP)
 139         user_3 = auth_success_3.find(CAS + "user", namespaces=NSMAP)
 140
 141         proxies_3  = auth_success_3.find(CAS + "proxies")
 142         self.assertIsNotNone(proxies_3) # there should be a proxy. I am issued by a Proxy Ticket
 143         proxy_3 = proxies_3.find(CAS + "proxy", namespaces=NSMAP)
 144         self.assertEqual(proxyTarget_1, proxy_3.text )
 145
 146         self.assertIsNotNone(auth_success_2)
 147         self.assertEqual('root', user_3.text)
 148
 149
 150
 151
 152     def test_succeessful_login(self):
 153         response = self._login_user('root', '123')
 154         self._validate_cas1(response, True)
 155
 156         response = self.client.get(reverse('cas_login'), {'service': self.service}, follow=False)
 157         self.assertEqual(response.status_code, 302)
 158         self.assertTrue(response['location'].startswith('%s?ticket=' % self.service))
 159
 160         response = self.client.get(reverse('cas_login'), follow=False)
 161         self.assertEqual(response.status_code, 302)
 162         self.assertTrue(response['location'].startswith('http://testserver/'))
 163
 164         response = self.client.get(response['location'], follow=False)
 165         self.assertIn(response.status_code, [302, 200])
 166
 167         response = self.client.get(reverse('cas_login'), {'service': self.service, 'warn': True}, follow=False)
 168         self.assertEqual(response.status_code, 200)
 169         self.assertTemplateUsed(response, 'cas/warn.html')
 170
 171
 172     def _cas_logout(self):
 173         response = self.client.get(reverse('cas_logout'), follow=False)
 174         self.assertEqual(response.status_code, 200)
 175
 176
 177     def test_logout(self):
 178         response = self._login_user('root', '123')
 179         self._validate_cas1(response, True)
 180
 181         self._cas_logout()
 182
 183         response = self.client.get(reverse('cas_login'), follow=False)
 184         self.assertEqual(response.status_code, 200)
 185         self.assertEqual(response.context['user'].is_anonymous(), True)
 186
 187
 188     def test_broken_pwd(self):
 189         self._fail_login('root', '321')
 190
 191     def test_broken_username(self):
 192         self._fail_login('notroot', '123')
 193
 194     def test_nonactive_user_login(self):
 195         self._fail_login('nonactive', '123')
 196
 197     def test_cas2_success_validate(self):
 198         response = self._login_user('root', '123')
 199         response = self._validate_cas2(response, True)
 200         user = User.objects.get(username=self.username)
 201         self.assertEqual(response.content, _cas2_sucess_response(user).content)
 202
 203     def test_cas2_custom_attrs(self):
 204         cas_collect_custom_attributes.connect(cas_mapping)
 205         response = self._login_user('editor', '123')
 206         self.maxDiff=None
 207
 208         response = self._validate_cas2(response, True)
 209         self.assertEqual(response.content.decode('utf-8'),
 210                                            '''<cas:serviceResponse xmlns:cas="http://www.yale.edu/tp/cas">'''
 211                                            '''<cas:authenticationSuccess>'''
 212                                            '''<cas:user>editor</cas:user>'''
 213                                            '''<cas:attributes>'''
 214                                            '''<cas:attraStyle>Jasig</cas:attraStyle>'''
 215                                            '''<cas:email>editor@exapmle.com</cas:email>'''
 216                                            '''<cas:group>editor</cas:group>'''
 217                                            '''<cas:is_active>True</cas:is_active>'''
 218                                            '''<cas:is_staff>True</cas:is_staff>'''
 219                                            '''</cas:attributes>'''
 220                                            '''</cas:authenticationSuccess>'''
 221                                            '''</cas:serviceResponse>''')
 222
 223         self._cas_logout()
 224         response = self._login_user('editor', '123')
 225         settings.CAS_CUSTOM_ATTRIBUTES_FORMATER = 'cas_provider.attribute_formatters.ruby_cas'
 226         response = self._validate_cas2(response, True)
 227         self.assertEqual(response.content.decode('utf-8'),
 228                                            '''<cas:serviceResponse xmlns:cas="http://www.yale.edu/tp/cas">'''
 229                                            '''<cas:authenticationSuccess>'''
 230                                            '''<cas:user>editor</cas:user>'''
 231                                            '''<cas:attraStyle>RubyCAS</cas:attraStyle>'''
 232                                            '''<cas:email>editor@exapmle.com</cas:email>'''
 233                                            '''<cas:group>editor</cas:group>'''
 234                                            '''<cas:is_active>True</cas:is_active>'''
 235                                            '''<cas:is_staff>True</cas:is_staff>'''
 236                                            '''</cas:authenticationSuccess>'''
 237                                            '''</cas:serviceResponse>''')
 238
 239         self._cas_logout()
 240         response = self._login_user('editor', '123')
 241         settings.CAS_CUSTOM_ATTRIBUTES_FORMATER = 'cas_provider.attribute_formatters.name_value'
 242         response = self._validate_cas2(response, True)
 243         self.assertEqual(response.content.decode('utf-8'),
 244                                            '''<cas:serviceResponse xmlns:cas="http://www.yale.edu/tp/cas">'''
 245                                            '''<cas:authenticationSuccess>'''
 246                                            '''<cas:user>editor</cas:user>'''
 247                                            '''<cas:attribute name="attraStyle" value="Name-Value"/>'''
 248                                            '''<cas:attribute name="email" value="editor@exapmle.com"/>'''
 249                                            '''<cas:attribute name="group" value="editor"/>'''
 250                                            '''<cas:attribute name="is_active" value="True"/>'''
 251                                            '''<cas:attribute name="is_staff" value="True"/>'''
 252                                            '''</cas:authenticationSuccess>'''
 253                                            '''</cas:serviceResponse>''')
 254
 255
 256     def test_cas2_fail_validate(self):
 257         for user, pwd in (('root', '321'), ('notroot', '123'), ('nonactive', '123')):
 258             response = self._login_user(user, pwd)
 259             self._validate_cas2(response, False)
 260
 261
 262     def test_generate_proxy_granting_ticket(self):
 263         request.urlopen = dummy_urlopen # monkey patching request.urlopen so that the testcase doesnt really opens a url
 264         url = 'http://my.call.back/callhere'
 265
 266         user = User.objects.get(username = 'root')
 267         st = ServiceTicket.objects.create(user = user )
 268         pgt = generate_proxy_granting_ticket(url, st)
 269         self.assertIsNotNone(pgt)
 270
 271         calledUrl = cas_provider.tests.dummy_urlopen_url
 272         parsedUrl = urlparse(calledUrl)
 273         params = parse_qs(parsedUrl.query)
 274         self.assertIsNotNone(params['pgtId'])
 275         self.assertIsNotNone(params['pgtIou'])
 276
 277
 278
 279     def _fail_login(self, username, password):
 280         response = self._login_user(username, password)
 281         self._validate_cas1(response, False)
 282
 283         response = self.client.get(reverse('cas_login'), {'service': self.service}, follow=False)
 284         self.assertEqual(response.status_code, 200)
 285         response = self.client.get(reverse('cas_login'), follow=False)
 286         self.assertEqual(response.status_code, 200)
 287
 288
 289
 290     def _login_user(self, username, password):
 291         self.username = username
 292         response = self.client.get(reverse('cas_login'), {'service': self.service})
 293         self.assertEqual(response.status_code, 200)
 294         self.assertTemplateUsed(response, 'cas/login.html')
 295         form = response.context['form']
 296         service = form['service'].value()
 297         return self.client.post(reverse('cas_login'), {
 298             'username': username,
 299             'password': password,
 300             'service': service
 301         }, follow=False)
 302
 303
 304     def _validate_cas1(self, response, is_correct=True):
 305         if is_correct:
 306             self.assertEqual(response.status_code, 302)
 307             self.assertTrue(response.has_header('location'))
 308             location = urlparse(response['location'])
 309             ticket = location.query.split('=')[1]
 310
 311             response = self.client.get(reverse('cas_validate'), {'ticket': ticket, 'service': self.service}, follow=False)
 312             self.assertEqual(response.status_code, 200)
 313             self.assertEqual(response.content.decode('utf-8'), 'yes\n%s\n' % self.username)
 314         else:
 315             self.assertEqual(response.status_code, 200)
 316             self.assertEqual(len(response.context['errors']), 1)
 317
 318             response = self.client.get(reverse('cas_validate'), {'ticket': 'ST-12312312312312312312312', 'service': self.service}, follow=False)
 319             self.assertEqual(response.status_code, 200)
 320             self.assertEqual(response.content.decode('utf-8'), 'no\n\n')
 321
 322
 323     def _validate_cas2(self, response, is_correct=True, pgtUrl = None):
 324         if is_correct:
 325             self.assertEqual(response.status_code, 302)
 326             self.assertTrue(response.has_header('location'))
 327             location = urlparse(response['location'])
 328             ticket = location.query.split('=')[1]
 329             if pgtUrl:
 330                 response = self.client.get(reverse('cas_service_validate'), {'ticket': ticket, 'service': self.service, 'pgtUrl': pgtUrl}, follow=False)
 331             else:
 332                 response = self.client.get(reverse('cas_service_validate'), {'ticket': ticket, 'service': self.service}, follow=False)
 333             self.assertEqual(response.status_code, 200)
 334         else:
 335             self.assertEqual(response.status_code, 200)
 336             self.assertEqual(len(response.context['errors']), 1)
 337
 338             response = self.client.get(reverse('cas_service_validate'), {'ticket': 'ST-12312312312312312312312', 'service': self.service}, follow=False)
 339             self.assertEqual(response.status_code, 200)
 340             self.assertEqual(response.content, _cas2_error_response(INVALID_TICKET).content)
 341         return response
 342
 343 class ModelsTestCase(TestCase):
 344
 345     fixtures = ['cas_users.json', ]
 346
 347     def setUp(self):
 348         self.user = User.objects.get(username='root')
 349
 350     def test_redirects(self):
 351         ticket = ServiceTicket.objects.create(service='http://example.com', user=self.user)
 352         self.assertEqual(ticket.get_redirect_url(), '%(service)s?ticket=%(ticket)s' % ticket.__dict__)
 353
 354
 355 def cas_mapping(sender, user, **kwargs):
 356     return {
 357         'is_staff': str(user.is_staff),
 358         'is_active': str(user.is_active),
 359         'email': user.email,
 360         'group': [g.name for g in user.groups.all()]
 361     }