cas_provider/views.py

   1 from django.http import HttpResponse, HttpResponseForbidden, HttpResponseRedirect
   2 from django.shortcuts import render_to_response
   3 from django.template import RequestContext
   4 from django.contrib.auth.models import User
   5 from django.contrib.auth import authenticate
   6 from django.contrib.auth import login as auth_login, logout as auth_logout
   7 from django.utils.translation import ugettext_lazy as _
   8
   9 from forms import LoginForm
  10 from models import ServiceTicket, LoginTicket
  11 from utils import create_service_ticket
  12
  13 __all__ = ['login', 'validate', 'logout']
  14
  15 def login(request, template_name='cas/login.html', success_redirect='/accounts/'):
  16     service = request.GET.get('service', None)
  17     if request.user.is_authenticated():
  18         if service is not None:
  19             ticket = create_service_ticket(request.user, service)
  20             if service.find('?') == -1:
  21                 return HttpResponseRedirect(service + '?ticket=' + ticket.ticket)
  22             else:
  23                 return HttpResponseRedirect(service + '&ticket=' + ticket.ticket)
  24         else:
  25             return HttpResponseRedirect(success_redirect)
  26     errors = []
  27     if request.method == 'POST':
  28         username = request.POST.get('username', None)
  29         password = request.POST.get('password', None)
  30         service = request.POST.get('service', None)
  31         lt = request.POST.get('lt', None)
  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=username, 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             username = ticket.user.username
  62             ticket.delete()
  63             return HttpResponse("yes\r\n%s\r\n" % username)
  64         except:
  65             pass
  66     return HttpResponse("no\r\n\r\n")
  67
  68 def logout(request, template_name='cas/logout.html'):
  69     url = request.GET.get('url', None)
  70     auth_logout(request)
  71     return render_to_response(template_name, {'url': url}, context_instance=RequestContext(request))