remove unused import
[django-cas-provider.git] / cas_provider / views.py
index 3572303..1160882 100644 (file)
@@ -2,10 +2,16 @@ import logging
 logger = logging.getLogger('cas_provider.views')
 import urllib
 
-import logging
 from urllib import urlencode
 import urllib2
 import urlparse
+from functools import wraps
+
+from django.utils.decorators import available_attrs
+from django.views.decorators.debug import sensitive_post_parameters
+from django.views.decorators.cache import cache_control
+from django.utils.cache import patch_cache_control
+from django.views.decorators.csrf import csrf_protect
 
 from django.http import HttpResponse, HttpResponseRedirect
 from django.conf import settings
@@ -21,7 +27,6 @@ from cas_provider.attribute_formatters import NSMAP, CAS
 from cas_provider.models import ProxyGrantingTicket, ProxyTicket
 from cas_provider.models import ServiceTicket
 
-from cas_provider.exceptions import SameEmailMismatchedPasswords
 from cas_provider.forms import LoginForm, MergeLoginForm
 
 from . import signals
@@ -44,6 +49,27 @@ ERROR_MESSAGES = (
 logger = logging.getLogger(__name__)
 
 
+_never_cache = cache_control(no_cache=True, must_revalidate=True)
+
+
+def never_cache(view_func):
+    """
+    Decorator that adds headers to a response so that it will
+    never be cached.
+    """
+    @wraps(view_func, assigned=available_attrs(view_func))
+    def _wrapped_view_func(request, *args, **kwargs):
+        response = view_func(request, *args, **kwargs)
+        patch_cache_control(response, no_cache=True,
+                            must_revalidate=True, proxy_revalidate=True)
+        response['Pragma'] = 'no-cache'
+        return response
+    return _wrapped_view_func
+
+
+@sensitive_post_parameters()
+@csrf_protect
+@never_cache
 def login(request, template_name='cas/login.html',
           success_redirect=settings.LOGIN_REDIRECT_URL,
           warn_template_name='cas/warn.html', **kwargs):
@@ -70,7 +96,7 @@ def login(request, template_name='cas/login.html',
         if form.is_valid():
             service = form.cleaned_data.get('service', None)
             try:
-                auth_args = dict(username=form.cleaned_data['email'],
+                auth_args = dict(username=form.cleaned_data['username'],
                                  password=form.cleaned_data['password'])
                 if merge:
                     # We only want to send the merge argument if it's
@@ -78,7 +104,7 @@ def login(request, template_name='cas/login.html',
                     # through the auth backends properly.
                     auth_args['merge'] = merge
                 user = authenticate(**auth_args)
-            except SameEmailMismatchedPasswords:
+            except:
                 # Need to merge the accounts?
                 if merge:
                     # We shouldn't get here...
@@ -87,7 +113,7 @@ def login(request, template_name='cas/login.html',
                     base_url = reverse('cas_provider_merge')
                     args = dict(
                         success_redirect=success_redirect,
-                        email=form.cleaned_data['email'],
+                        username=form.cleaned_data['username'],
                         )
                     if service is not None:
                         args['service'] = service
@@ -96,7 +122,7 @@ def login(request, template_name='cas/login.html',
                     url = '%s?%s' % (base_url, args)
                     logging.debug('Redirecting to %s', url)
                     return HttpResponseRedirect(url)
-            
+
             if user is None:
                 errors.append('Incorrect username and/or password.')
             else:
@@ -105,24 +131,27 @@ def login(request, template_name='cas/login.html',
 
     else:  # Not a POST...
         if merge:
-            form = MergeLoginForm(initial={'service': service, 'email': request.GET.get('email')})
+            form = MergeLoginForm(initial={'service': service, 'username': request.GET.get('username')})
         else:
             form = LoginForm(initial={'service': service})
 
     if user is not None and user.is_authenticated():
         # We have an authenticated user.
         if not user.is_active:
-            errors.append('This account is disabled.')
+            errors.append('This account is disabled. Please contact us if you feel it should be enabled again.')
         else:
             # Send the on_cas_login signal. If we get an HttpResponse, return that.
             for receiver, response in signals.on_cas_login.send(sender=login, request=request, **kwargs):
                 if isinstance(response, HttpResponse):
                     return response
-            
+
             if service is None:
                 # Try and pull the service off the session
                 service = request.session.pop('service', service)
-            
+
+            signals.on_cas_login_success.send(sender=login, request=request,
+                                              service=service, **kwargs)
+
             if service is None:
                 # Normal internal success redirection.
                 logging.debug('Redirecting to %s', success_redirect)
@@ -133,7 +162,7 @@ def login(request, template_name='cas/login.html',
                         'service': service,
                         'warn': False
                     }, context_instance=RequestContext(request))
-                
+
                 # Create a service ticket and redirect to the service.
                 ticket = ServiceTicket.objects.create(service=service, user=user)
                 if 'service' in request.session:
@@ -148,6 +177,7 @@ def login(request, template_name='cas/login.html',
     return render_to_response(template_name, {'form': form, 'errors': errors}, context_instance=RequestContext(request))
 
 
+@never_cache
 def validate(request):
     """Validate ticket via CAS v.1 protocol
     """
@@ -176,8 +206,9 @@ def validate(request):
 
     logger.info('Validation failed.')
     return HttpResponse("no\n\n")
-    
 
+
+@never_cache
 def logout(request, template_name='cas/logout.html',
            auto_redirect=settings.CAS_AUTO_REDIRECT_AFTER_LOGOUT):
     url = request.GET.get('url', None)
@@ -191,6 +222,7 @@ def logout(request, template_name='cas/logout.html',
         context_instance=RequestContext(request))
 
 
+@never_cache
 def proxy(request):
     targetService = request.GET['targetService']
     pgt_id = request.GET['pgt']
@@ -251,6 +283,7 @@ def ticket_validate(service, ticket_string, pgtUrl):
     return _cas2_sucess_response(user, pgtIouId, proxies)
 
 
+@never_cache
 def service_validate(request):
     """Validate ticket via CAS v.2 protocol"""
     service = request.GET.get('service', None)
@@ -262,6 +295,7 @@ def service_validate(request):
         return ticket_validate(service, ticket_string, pgtUrl)
 
 
+@never_cache
 def proxy_validate(request):
     """Validate ticket via CAS v.2 protocol"""
     service = request.GET.get('service', None)
@@ -290,7 +324,7 @@ def generate_proxy_granting_ticket(pgt_url, ticket):
     uri[3] = urlencode(query)
 
     try:
-        response = urllib2.urlopen(urlparse.urlunsplit(uri))
+        urllib2.urlopen(urlparse.urlunsplit(uri))
     except urllib2.HTTPError as e:
         if not e.code in proxy_callback_good_status:
             logger.debug('Checking Proxy Callback URL {} returned {}. Not issuing PGT.'.format(uri, e.code))
@@ -343,8 +377,10 @@ def auth_success_response(user, pgt, proxies):
 
     identifiers = [i for sr, rr in signals.on_cas_collect_histories.send(sender=validate, for_user=user)
                    for i in rr]
+
     if identifiers:
-        attrs['identifiers'] = identifiers
+        # Singular `identifier`, as that is the name of the element tag(s).
+        attrs['identifier'] = identifiers
 
     if attrs:
         formatter = get_callable(settings.CAS_CUSTOM_ATTRIBUTES_FORMATER)