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.request import install_opener
  18 except:
  19     from urlparse import urlparse, parse_qsl, parse_qs
  20     from urllib2 import install_opener
  21
  22
  23
  24
  25 class DummyOpener(object):
  26     url = None
  27
  28     @staticmethod
  29     def open(url, *args, **kwargs):
  30         DummyOpener.url = url
  31
  32
  33 class ViewsTest(TestCase):
  34
  35     fixtures = ['cas_users', ]
  36
  37
  38
  39     def setUp(self):
  40         self.service = 'http://example.com/'
  41
  42
  43     def test_successful_login_with_proxy(self):
  44         install_opener(DummyOpener) # Don't really open any URLs
  45         proxyTarget = "http://my.sweet.service"
  46
  47         response = self._login_user('root', '123')
  48         response = self._validate_cas2(response, True, proxyTarget )
  49
  50         # Test: I'm acting as the service that will call another service
  51         # Step 1: Get the proxy granting ticket
  52         responseXml = ElementTree.parse(StringIO(response.content.decode('utf-8')))
  53         auth_success = responseXml.find(CAS + 'authenticationSuccess', namespaces=NSMAP)
  54         pgt = auth_success.find(CAS + "proxyGrantingTicket", namespaces=NSMAP)
  55         user = auth_success.find(CAS + "user", namespaces=NSMAP)
  56         self.assertEqual('root', user.text)
  57         self.assertIsNotNone(pgt.text)
  58         self.assertTrue(pgt.text.startswith('PGTIOU'))
  59
  60         pgtId = parse_qs(urlparse(DummyOpener.url).query)['pgtId']
  61
  62         #Step 2: Get the actual proxy ticket
  63         proxyTicketResponse = self.client.get(reverse('proxy'), {'targetService': proxyTarget, 'pgt': pgtId}, follow=False)
  64         proxyTicketResponseXml = ElementTree.parse(StringIO(proxyTicketResponse.content.decode('utf-8')))
  65         self.assertIsNotNone(proxyTicketResponseXml.find(CAS + "proxySuccess", namespaces=NSMAP))
  66         self.assertIsNotNone(proxyTicketResponseXml.find(CAS + "proxySuccess/cas:proxyTicket", namespaces=NSMAP))
  67         proxyTicket = proxyTicketResponseXml.find(CAS + "proxySuccess/cas:proxyTicket", namespaces=NSMAP);
  68
  69         #Step 3: I have the proxy ticket I can talk to some other backend service as the currently logged in user!
  70         proxyValidateResponse = self.client.get(reverse('cas_proxy_validate'), {'ticket': proxyTicket.text, 'service': proxyTarget})
  71         proxyValidateResponseXml = ElementTree.parse(StringIO(proxyValidateResponse.content.decode('utf-8')))
  72
  73         auth_success_2 = proxyValidateResponseXml.find(CAS + 'authenticationSuccess', namespaces=NSMAP)
  74         user_2 = auth_success.find(CAS + "user", namespaces=NSMAP)
  75         proxies_1  = auth_success_2.find(CAS + "proxies")
  76         self.assertIsNone(proxies_1) # there are no proxies. I am issued by a Service Ticket
  77
  78         self.assertEqual(user.text, user_2.text)
  79
  80
  81     def test_successful_proxy_chaining(self):
  82         install_opener(DummyOpener) # Don't really open any URLs
  83         proxyTarget_1 = "http://my.sweet.service_1"
  84         proxyTarget_2 = "http://my.sweet.service_2"
  85
  86         response = self._login_user('root', '123')
  87         response = self._validate_cas2(response, True, proxyTarget_1 )
  88
  89         # Test: I'm acting as the service that will call another service
  90         # Step 1: Get the proxy granting ticket
  91         responseXml = ElementTree.parse(StringIO(response.content.decode('utf-8')))
  92         auth_success_1 = responseXml.find(CAS + 'authenticationSuccess', namespaces=NSMAP)
  93         pgt_1 = auth_success_1.find(CAS + "proxyGrantingTicket", namespaces=NSMAP)
  94         user_1 = auth_success_1.find(CAS + "user", namespaces=NSMAP)
  95         self.assertEqual('root', user_1.text)
  96         self.assertIsNotNone(pgt_1.text)
  97         self.assertTrue(pgt_1.text.startswith('PGTIOU'))
  98
  99         pgtId_1 = parse_qs(urlparse(DummyOpener.url).query)['pgtId']
 100
 101         #Step 2: Get the actual proxy ticket
 102         proxyTicketResponse_1 = self.client.get(reverse('proxy'), {'targetService': proxyTarget_1, 'pgt': pgtId_1}, follow=False)
 103         proxyTicketResponseXml_1 = ElementTree.parse(StringIO(proxyTicketResponse_1.content.decode('utf-8')))
 104         self.assertIsNotNone(proxyTicketResponseXml_1.find(CAS + "proxySuccess", namespaces=NSMAP))
 105         self.assertIsNotNone(proxyTicketResponseXml_1.find(CAS + "proxySuccess/cas:proxyTicket", namespaces=NSMAP))
 106         proxyTicket_1 = proxyTicketResponseXml_1.find(CAS + "proxySuccess/cas:proxyTicket", namespaces=NSMAP);
 107
 108         #Step 3: I'm backend service 1 - I have the proxy ticket - I want to talk to back service 2
 109         #
 110         proxyValidateResponse_1 = self.client.get(reverse('cas_proxy_validate'), {'ticket': proxyTicket_1.text, 'service': proxyTarget_1, 'pgtUrl': proxyTarget_2})
 111         proxyValidateResponseXml_1 = ElementTree.parse(StringIO(proxyValidateResponse_1.content.decode('utf-8')))
 112
 113         auth_success_2 = proxyValidateResponseXml_1.find(CAS + 'authenticationSuccess', namespaces=NSMAP)
 114         user_2 = auth_success_2.find(CAS + "user", namespaces=NSMAP)
 115
 116         proxies_1  = auth_success_2.find(CAS + "proxies")
 117         self.assertIsNone(proxies_1) # there are no proxies. I am issued by a Service Ticket
 118         self.assertIsNotNone(auth_success_2)
 119         self.assertEqual('root', user_2.text)
 120
 121         pgt_2 = auth_success_2.find(CAS + "proxyGrantingTicket", namespaces=NSMAP)
 122         user = auth_success_2.find(CAS + "user", namespaces=NSMAP)
 123         self.assertEqual('root', user.text)
 124         self.assertIsNotNone(pgt_2.text)
 125         self.assertTrue(pgt_2.text.startswith('PGTIOU'))
 126
 127         pgtId_2 = parse_qs(urlparse(DummyOpener.url).query)['pgtId']
 128
 129         #Step 4: Get the second proxy ticket
 130         proxyTicketResponse_2 = self.client.get(reverse('proxy'), {'targetService': proxyTarget_2, 'pgt': pgtId_2})
 131         proxyTicketResponseXml_2 = ElementTree.parse(StringIO(proxyTicketResponse_2.content.decode('utf-8')))
 132         self.assertIsNotNone(proxyTicketResponseXml_2.find(CAS + "proxySuccess", namespaces=NSMAP))
 133         self.assertIsNotNone(proxyTicketResponseXml_2.find(CAS + "proxySuccess/cas:proxyTicket", namespaces=NSMAP))
 134         proxyTicket_2 = proxyTicketResponseXml_2.find(CAS + "proxySuccess/cas:proxyTicket", namespaces=NSMAP)
 135
 136         proxyValidateResponse_3 = self.client.get(reverse('cas_proxy_validate'), {'ticket': proxyTicket_2.text, 'service': proxyTarget_2, 'pgtUrl': None})
 137         proxyValidateResponseXml_3 = ElementTree.parse(StringIO(proxyValidateResponse_3.content.decode('utf-8')))
 138
 139         auth_success_3 = proxyValidateResponseXml_3.find(CAS + 'authenticationSuccess', namespaces=NSMAP)
 140         user_3 = auth_success_3.find(CAS + "user", namespaces=NSMAP)
 141
 142         proxies_3  = auth_success_3.find(CAS + "proxies")
 143         self.assertIsNotNone(proxies_3) # there should be a proxy. I am issued by a Proxy Ticket
 144         proxy_3 = proxies_3.find(CAS + "proxy", namespaces=NSMAP)
 145         self.assertEqual(proxyTarget_1, proxy_3.text )
 146
 147         self.assertIsNotNone(auth_success_2)
 148         self.assertEqual('root', user_3.text)
 149
 150
 151
 152
 153     def test_succeessful_login(self):
 154         response = self._login_user('root', '123')
 155         self._validate_cas1(response, True)
 156
 157         response = self.client.get(reverse('cas_login'), {'service': self.service}, follow=False)
 158         self.assertEqual(response.status_code, 302)
 159         self.assertTrue(response['location'].startswith('%s?ticket=' % self.service))
 160
 161         response = self.client.get(reverse('cas_login'), follow=False)
 162         self.assertEqual(response.status_code, 302)
 163         self.assertTrue(response['location'].startswith('http://testserver/'))
 164
 165         response = self.client.get(response['location'], follow=False)
 166         self.assertIn(response.status_code, [302, 200])
 167
 168         response = self.client.get(reverse('cas_login'), {'service': self.service, 'warn': True}, follow=False)
 169         self.assertEqual(response.status_code, 200)
 170         self.assertTemplateUsed(response, 'cas/warn.html')
 171
 172
 173     def _cas_logout(self):
 174         response = self.client.get(reverse('cas_logout'), follow=False)
 175         self.assertEqual(response.status_code, 200)
 176
 177
 178     def test_logout(self):
 179         response = self._login_user('root', '123')
 180         self._validate_cas1(response, True)
 181
 182         self._cas_logout()
 183
 184         response = self.client.get(reverse('cas_login'), follow=False)
 185         self.assertEqual(response.status_code, 200)
 186         self.assertEqual(response.context['user'].is_anonymous(), True)
 187
 188
 189     def test_broken_pwd(self):
 190         self._fail_login('root', '321')
 191
 192     def test_broken_username(self):
 193         self._fail_login('notroot', '123')
 194
 195     def test_nonactive_user_login(self):
 196         self._fail_login('nonactive', '123')
 197
 198     def test_cas2_success_validate(self):
 199         response = self._login_user('root', '123')
 200         response = self._validate_cas2(response, True)
 201         user = User.objects.get(username=self.username)
 202         self.assertEqual(response.content, _cas2_sucess_response(user).content)
 203
 204     def test_cas2_validate_twice(self):
 205         response = self._login_user('root', '123')
 206         response2 = self._validate_cas2(response, True)
 207         user = User.objects.get(username=self.username)
 208         self.assertEqual(response2.content, _cas2_sucess_response(user).content)
 209
 210         response2 = self._validate_cas2(response, True)
 211         self.assertEqual(response2.content, _cas2_error_response(INVALID_TICKET).content)
 212
 213     def test_cas2_validate_twice_with_pgt(self):
 214         proxyTarget = "http://my.sweet.service_1"
 215         response = self._login_user('root', '123')
 216         response2 = self._validate_cas2(response, True, proxyTarget)
 217         user = User.objects.get(username=self.username)
 218         self.assertEqual(response2.content, _cas2_sucess_response(user).content)
 219
 220         response2 = self._validate_cas2(response, True, proxyTarget)
 221         self.assertEqual(response2.content, _cas2_error_response(INVALID_TICKET).content)
 222
 223     def test_cas2_custom_attrs(self):
 224         cas_collect_custom_attributes.connect(cas_mapping)
 225         response = self._login_user('editor', '123')
 226         self.maxDiff=None
 227
 228         response = self._validate_cas2(response, True)
 229         self.assertEqual(response.content.decode('utf-8'),
 230                                            '''<cas:serviceResponse xmlns:cas="http://www.yale.edu/tp/cas">'''
 231                                            '''<cas:authenticationSuccess>'''
 232                                            '''<cas:user>editor</cas:user>'''
 233                                            '''<cas:attributes>'''
 234                                            '''<cas:attraStyle>Jasig</cas:attraStyle>'''
 235                                            '''<cas:email>editor@exapmle.com</cas:email>'''
 236                                            '''<cas:group>editor</cas:group>'''
 237                                            '''<cas:is_active>True</cas:is_active>'''
 238                                            '''<cas:is_staff>True</cas:is_staff>'''
 239                                            '''</cas:attributes>'''
 240                                            '''</cas:authenticationSuccess>'''
 241                                            '''</cas:serviceResponse>''')
 242
 243         self._cas_logout()
 244         response = self._login_user('editor', '123')
 245         settings.CAS_CUSTOM_ATTRIBUTES_FORMATER = 'cas_provider.attribute_formatters.ruby_cas'
 246         response = self._validate_cas2(response, True)
 247         self.assertEqual(response.content.decode('utf-8'),
 248                                            '''<cas:serviceResponse xmlns:cas="http://www.yale.edu/tp/cas">'''
 249                                            '''<cas:authenticationSuccess>'''
 250                                            '''<cas:user>editor</cas:user>'''
 251                                            '''<cas:attraStyle>RubyCAS</cas:attraStyle>'''
 252                                            '''<cas:email>editor@exapmle.com</cas:email>'''
 253                                            '''<cas:group>editor</cas:group>'''
 254                                            '''<cas:is_active>True</cas:is_active>'''
 255                                            '''<cas:is_staff>True</cas:is_staff>'''
 256                                            '''</cas:authenticationSuccess>'''
 257                                            '''</cas:serviceResponse>''')
 258
 259         self._cas_logout()
 260         response = self._login_user('editor', '123')
 261         settings.CAS_CUSTOM_ATTRIBUTES_FORMATER = 'cas_provider.attribute_formatters.name_value'
 262         response = self._validate_cas2(response, True)
 263         self.assertEqual(response.content.decode('utf-8'),
 264                                            '''<cas:serviceResponse xmlns:cas="http://www.yale.edu/tp/cas">'''
 265                                            '''<cas:authenticationSuccess>'''
 266                                            '''<cas:user>editor</cas:user>'''
 267                                            '''<cas:attribute name="attraStyle" value="Name-Value"/>'''
 268                                            '''<cas:attribute name="email" value="editor@exapmle.com"/>'''
 269                                            '''<cas:attribute name="group" value="editor"/>'''
 270                                            '''<cas:attribute name="is_active" value="True"/>'''
 271                                            '''<cas:attribute name="is_staff" value="True"/>'''
 272                                            '''</cas:authenticationSuccess>'''
 273                                            '''</cas:serviceResponse>''')
 274
 275
 276     def test_cas2_fail_validate(self):
 277         for user, pwd in (('root', '321'), ('notroot', '123'), ('nonactive', '123')):
 278             response = self._login_user(user, pwd)
 279             self._validate_cas2(response, False)
 280
 281
 282     def test_generate_proxy_granting_ticket(self):
 283         install_opener(DummyOpener) # Don't really open any URLs
 284         url = 'http://my.call.back/callhere'
 285
 286         user = User.objects.get(username = 'root')
 287         st = ServiceTicket.objects.create(user = user )
 288         pgt = generate_proxy_granting_ticket(url, st)
 289         self.assertIsNotNone(pgt)
 290
 291         calledUrl = DummyOpener.url
 292         parsedUrl = urlparse(calledUrl)
 293         params = parse_qs(parsedUrl.query)
 294         self.assertIsNotNone(params['pgtId'])
 295         self.assertIsNotNone(params['pgtIou'])
 296
 297
 298
 299     def _fail_login(self, username, password):
 300         response = self._login_user(username, password)
 301         self._validate_cas1(response, False)
 302
 303         response = self.client.get(reverse('cas_login'), {'service': self.service}, follow=False)
 304         self.assertEqual(response.status_code, 200)
 305         response = self.client.get(reverse('cas_login'), follow=False)
 306         self.assertEqual(response.status_code, 200)
 307
 308
 309
 310     def _login_user(self, username, password):
 311         self.username = username
 312         response = self.client.get(reverse('cas_login'), {'service': self.service})
 313         self.assertEqual(response.status_code, 200)
 314         self.assertTemplateUsed(response, 'cas/login.html')
 315         form = response.context['form']
 316         service = form['service'].value()
 317         return self.client.post(reverse('cas_login'), {
 318             'username': username,
 319             'password': password,
 320             'service': service
 321         }, follow=False)
 322
 323
 324     def _validate_cas1(self, response, is_correct=True):
 325         if is_correct:
 326             self.assertEqual(response.status_code, 302)
 327             self.assertTrue(response.has_header('location'))
 328             location = urlparse(response['location'])
 329             ticket = location.query.split('=')[1]
 330
 331             response = self.client.get(reverse('cas_validate'), {'ticket': ticket, 'service': self.service}, follow=False)
 332             self.assertEqual(response.status_code, 200)
 333             self.assertEqual(response.content.decode('utf-8'), 'yes\n%s\n' % self.username)
 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_validate'), {'ticket': 'ST-12312312312312312312312', 'service': self.service}, follow=False)
 339             self.assertEqual(response.status_code, 200)
 340             self.assertEqual(response.content.decode('utf-8'), 'no\n\n')
 341
 342
 343     def _validate_cas2(self, response, is_correct=True, pgtUrl = None):
 344         if is_correct:
 345             self.assertEqual(response.status_code, 302)
 346             self.assertTrue(response.has_header('location'))
 347             location = urlparse(response['location'])
 348             ticket = location.query.split('=')[1]
 349             if pgtUrl:
 350                 response = self.client.get(reverse('cas_service_validate'), {'ticket': ticket, 'service': self.service, 'pgtUrl': pgtUrl}, follow=False)
 351             else:
 352                 response = self.client.get(reverse('cas_service_validate'), {'ticket': ticket, 'service': self.service}, follow=False)
 353             self.assertEqual(response.status_code, 200)
 354         else:
 355             self.assertEqual(response.status_code, 200)
 356             self.assertEqual(len(response.context['errors']), 1)
 357
 358             response = self.client.get(reverse('cas_service_validate'), {'ticket': 'ST-12312312312312312312312', 'service': self.service}, follow=False)
 359             self.assertEqual(response.status_code, 200)
 360             self.assertEqual(response.content, _cas2_error_response(INVALID_TICKET).content)
 361         return response
 362
 363 class ModelsTestCase(TestCase):
 364
 365     fixtures = ['cas_users.json', ]
 366
 367     def setUp(self):
 368         self.user = User.objects.get(username='root')
 369
 370     def test_redirects(self):
 371         ticket = ServiceTicket.objects.create(service='http://example.com', user=self.user)
 372         self.assertEqual(ticket.get_redirect_url(), '%(service)s?ticket=%(ticket)s' % ticket.__dict__)
 373
 374
 375 def cas_mapping(sender, user, **kwargs):
 376     return {
 377         'is_staff': str(user.is_staff),
 378         'is_active': str(user.is_active),
 379         'email': user.email,
 380         'group': [g.name for g in user.groups.all()]
 381     }