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         email = request.POST.get('email', None)
  27         password = request.POST.get('password', None)
  28         service = request.POST.get('service', None)
  29         lt = request.POST.get('lt', None)
  30         if not request.POST.get('remember_me', None):
  31           request.session.set_expiry(0)
  32
  33         try:
  34             login_ticket = LoginTicket.objects.get(ticket=lt)
  35         except:
  36             errors.append('Login ticket expired. Please try again.')
  37         else:
  38             login_ticket.delete()
  39             user = authenticate(username=email, password=password)
  40             if user is not None:
  41                 if user.is_active:
  42                     auth_login(request, user)
  43                     if service is not None:
  44                         ticket = create_service_ticket(user, service)
  45                         return HttpResponseRedirect(service + '?ticket=' + ticket.ticket)
  46                     else:
  47                         return HttpResponseRedirect(success_redirect)
  48                 else:
  49                     errors.append('This account is disabled.')
  50             else:
  51                     errors.append('Incorrect username and/or password.')
  52     form = LoginForm(service)
  53     return render_to_response(template_name, {'form': form, 'errors': errors}, context_instance=RequestContext(request))
  54
  55 def validate(request):
  56     service = request.GET.get('service', None)
  57     ticket_string = request.GET.get('ticket', None)
  58     if service is not None and ticket_string is not None:
  59         try:
  60             ticket = ServiceTicket.objects.get(ticket=ticket_string)
  61             ### NOTE: We've changed this to return the email address, not the username.
  62             email = ticket.user.email
  63             ticket.delete()
  64             return HttpResponse("yes\n%s\n" % email)
  65         except:
  66             pass
  67     return HttpResponse("no\n\n")
  68
  69 def logout(request, template_name='cas/logout.html'):
  70     url = request.GET.get('url', None)
  71     auth_logout(request)
  72     return render_to_response(template_name, {'url': url}, context_instance=RequestContext(request))