cas_provider/tests.py

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