code: def process_view(self, request, view_func, view_args, view_kwargs):
          
  
          if view_func == login:
              return cas_login(request, *view_args, **view_kwargs)
          elif view_func == logout:
              return cas_logout(request, *view_args, **view_kwargs)
  
          if view_func in (cas_login, cas_logout):
              return None
  
          if settings.CAS_ADMIN_PREFIX:
              if not request.path.startswith(settings.CAS_ADMIN_PREFIX):
                  return None
          elif not view_func.__module__.startswith('django.contrib.admin.'):
              return None
  
          if request.user.is_authenticated:
              if request.user.is_staff:
                  return None
              else:
                  raise PermissionDenied(_('You do not have staff privileges.'))
          params = urllib_parse.urlencode({REDIRECT_FIELD_NAME: request.get_full_path()})
          return HttpResponseRedirect(reverse(settings.CAS_LOGIN_URL_NAME) + '?' + params)
docs: Forwards unauthenticated requests to the admin page to the CAS
          login URL, as well as calls to django.contrib.auth.views.login and
          logout.