cas_provider/tests.py

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