cas_provider/views.py

   1 from django.http import HttpResponse, HttpResponseRedirect
   2 from django.shortcuts import render_to_response
   3 from django.template import RequestContext
   4 from django.contrib.auth import authenticate
   5 from django.contrib.auth import login as auth_login, logout as auth_logout
   6
   7 from forms import LoginForm
   8 from models import ServiceTicket, LoginTicket
   9 from utils import create_service_ticket
  10
  11 __all__ = ['login', 'validate', 'logout']
  12
  13 def login(request, template_name='cas/login.html', success_redirect='/accounts/'):
  14     service = request.GET.get('service', None)
  15     if request.user.is_authenticated():
  16         if service is not None:
  17             ticket = create_service_ticket(request.user, service)
  18             if service.find('?') == -1:
  19                 return HttpResponseRedirect(service + '?ticket=' + ticket.ticket)
  20             else:
  21                 return HttpResponseRedirect(service + '&ticket=' + ticket.ticket)
  22         else:
  23             return HttpResponseRedirect(success_redirect)
  24     errors = []
  25     if request.method == 'POST':
  26         username = request.POST.get('username', None)
  27         password = request.POST.get('password', None)
  28         service = request.POST.get('service', None)
  29         lt = request.POST.get('lt', None)
  30
  31         try:
  32             login_ticket = LoginTicket.objects.get(ticket=lt)
  33         except:
  34             errors.append('Login ticket expired. Please try again.')
  35         else:
  36             login_ticket.delete()
  37             user = authenticate(username=username, password=password)
  38             if user is not None:
  39                 if user.is_active:
  40                     auth_login(request, user)
  41                     if service is not None:
  42                         ticket = create_service_ticket(user, service)
  43                         return HttpResponseRedirect(service + '?ticket=' + ticket.ticket)
  44                     else:
  45                         return HttpResponseRedirect(success_redirect)
  46                 else:
  47                     errors.append('This account is disabled.')
  48             else:
  49                     errors.append('Incorrect username and/or password.')
  50     form = LoginForm(service)
  51     return render_to_response(template_name, {'form': form, 'errors': errors}, context_instance=RequestContext(request))
  52
  53 def validate(request):
  54     service = request.GET.get('service', None)
  55     ticket_string = request.GET.get('ticket', None)
  56     if service is not None and ticket_string is not None:
  57         try:
  58             ticket = ServiceTicket.objects.get(ticket=ticket_string)
  59             username = ticket.user.username
  60             ticket.delete()
  61             return HttpResponse("yes\r\n%s\r\n" % username)
  62         except:
  63             pass
  64     return HttpResponse("no\r\n\r\n")
  65
  66 def logout(request, template_name='cas/logout.html'):
  67     url = request.GET.get('url', None)
  68     auth_logout(request)
  69     return render_to_response(template_name, {'url': url}, context_instance=RequestContext(request))