cas_provider/views.py

   1 from django.http import HttpResponse, HttpResponseForbidden, HttpResponseRedirect
   2 from django.shortcuts import get_object_or_404, render_to_response, get_list_or_404
   3 from django.core.urlresolvers import reverse
   4 from django.core.exceptions import SuspiciousOperation
   5 from django.template import RequestContext
   6 from django.contrib.auth.models import User
   7 from django.contrib.auth import authenticate
   8 from django.contrib.auth import login as auth_login, logout as auth_logout
   9
  10 from forms import LoginForm
  11 from models import ServiceTicket, LoginTicket
  12 from utils import create_service_ticket
  13
  14 __all__ = ['login', 'validate', 'logout']
  15
  16 def login(request, template_name='cas/login.html', success_redirect='/accounts/'):
  17     service = request.GET.get('service', None)
  18     if request.user.is_authenticated():
  19         if service is not None:
  20             ticket = create_service_ticket(request.user, service)
  21             if service.find('?') == -1:
  22                 return HttpResponseRedirect(service + '?ticket=' + ticket.ticket)
  23             else:
  24                 return HttpResponseRedirect(service + '&ticket=' + ticket.ticket)
  25         else:
  26             return HttpResponseRedirect(success_redirect)
  27     errors = []
  28     if request.method == 'POST':
  29         username = request.POST.get('username', None)
  30         password = request.POST.get('password', None)
  31         service = request.POST.get('service', None)
  32         lt = request.POST.get('lt', None)
  33
  34         try:
  35             login_ticket = LoginTicket.objects.get(ticket=lt)
  36         except:
  37             errors.append('Login ticket expired. Please try again.')
  38         else:
  39             login_ticket.delete()
  40             user = authenticate(username=username, password=password)
  41             if user is not None:
  42                 if user.is_active:
  43                     auth_login(request, user)
  44                     if service is not None:
  45                         ticket = create_service_ticket(user, service)
  46                         return HttpResponseRedirect(service + '?ticket=' + ticket.ticket)
  47                     else:
  48                         return HttpResponseRedirect(success_redirect)
  49                 else:
  50                     errors.append('This account is disabled.')
  51             else:
  52                     errors.append('Incorrect username and/or password.')
  53     form = LoginForm(service)
  54     return render_to_response(template_name, {'form': form, 'errors': errors}, context_instance=RequestContext(request))
  55
  56 def validate(request):
  57     service = request.GET.get('service', None)
  58     ticket_string = request.GET.get('ticket', None)
  59     if service is not None and ticket_string is not None:
  60         try:
  61             ticket = ServiceTicket.objects.get(ticket=ticket_string)
  62             username = ticket.user.username
  63             ticket.delete()
  64             return HttpResponse("yes\n\r%s\n\r" % username)
  65         except:
  66             pass
  67     return HttpResponse("no\n\r\n\r")
  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))