-from django.http import HttpResponse, HttpResponseForbidden, HttpResponseRedirect
+from django.conf import settings
+from django.contrib.auth import login as auth_login, logout as auth_logout
+from django.core.urlresolvers import get_callable
+from django.http import HttpResponse, HttpResponseRedirect
from django.shortcuts import render_to_response
from django.template import RequestContext
-from django.contrib.auth.models import User
-from django.contrib.auth import authenticate
-from django.contrib.auth import login as auth_login, logout as auth_logout
-from django.utils.translation import ugettext_lazy as _
-
from forms import LoginForm
from models import ServiceTicket, LoginTicket
-from utils import create_service_ticket
-__all__ = ['login', 'validate', 'logout']
-def login(request, template_name='cas/login.html', success_redirect='/accounts/'):
+__all__ = ['login', 'validate', 'logout', 'service_validate']
+
+
+INVALID_TICKET = 'INVALID_TICKET'
+INVALID_SERVICE = 'INVALID_SERVICE'
+INVALID_REQUEST = 'INVALID_REQUEST'
+INTERNAL_ERROR = 'INTERNAL_ERROR'
+
+ERROR_MESSAGES = (
+ (INVALID_TICKET, u'The provided ticket is invalid.'),
+ (INVALID_SERVICE, u'Service is invalid'),
+ (INVALID_REQUEST, u'Not all required parameters were sent.'),
+ (INTERNAL_ERROR, u'An internal error occurred during ticket validation'),
+)
+
+
+def login(request, template_name='cas/login.html', \
+ success_redirect=settings.LOGIN_REDIRECT_URL,
+ warn_template_name='cas/warn.html'):
service = request.GET.get('service', None)
if request.user.is_authenticated():
if service is not None:
- ticket = create_service_ticket(request.user, service)
- if service.find('?') == -1:
- return HttpResponseRedirect(service + '?ticket=' + ticket.ticket)
- else:
- return HttpResponseRedirect(service + '&ticket=' + ticket.ticket)
+ if request.GET.get('warn', False):
+ return render_to_response(warn_template_name, {
+ 'service': service,
+ 'warn': False
+ }, context_instance=RequestContext(request))
+ ticket = ServiceTicket.objects.create(service=service, user=request.user)
+ return HttpResponseRedirect(ticket.get_redirect_url())
else:
return HttpResponseRedirect(success_redirect)
- errors = []
if request.method == 'POST':
- username = request.POST.get('username', None)
- password = request.POST.get('password', None)
- service = request.POST.get('service', None)
- lt = request.POST.get('lt', None)
-
- try:
- login_ticket = LoginTicket.objects.get(ticket=lt)
- except:
- errors.append(_('Login ticket expired. Please try again.'))
- else:
- login_ticket.delete()
- user = authenticate(username=username, password=password)
- if user is not None:
- if user.is_active:
- auth_login(request, user)
- if service is not None:
- ticket = create_service_ticket(user, service)
- return HttpResponseRedirect(service + '?ticket=' + ticket.ticket)
- else:
- return HttpResponseRedirect(success_redirect)
- else:
- errors.append(_('This account is disabled.'))
- else:
- errors.append(_('Incorrect username and/or password.'))
- form = LoginForm(service)
- return render_to_response(template_name, {'form': form, 'errors': errors}, context_instance=RequestContext(request))
-
+ form = LoginForm(request.POST)
+ if form.is_valid():
+ user = form.get_user()
+ auth_login(request, user)
+ service = form.cleaned_data.get('service')
+ if service is not None:
+ ticket = ServiceTicket.objects.create(service=service, user=user)
+ success_redirect = ticket.get_redirect_url()
+ return HttpResponseRedirect(success_redirect)
+ else:
+ form = LoginForm(initial={
+ 'service': service,
+ 'lt': LoginTicket.objects.create()
+ })
+ return render_to_response(template_name, {
+ 'form': form,
+ 'errors': form.get_errors()
+ }, context_instance=RequestContext(request))
+
+
def validate(request):
+ """Validate ticket via CAS v.1 protocol"""
service = request.GET.get('service', None)
ticket_string = request.GET.get('ticket', None)
if service is not None and ticket_string is not None:
+ #renew = request.GET.get('renew', True)
+ #if not renew:
+ # TODO: check user SSO session
try:
ticket = ServiceTicket.objects.get(ticket=ticket_string)
+ assert ticket.service == service
username = ticket.user.username
ticket.delete()
- return HttpResponse("yes\r\n%s\r\n" % username)
+ return HttpResponse("yes\n%s\n" % username)
except:
pass
- return HttpResponse("no\r\n\r\n")
-
+ return HttpResponse("no\n\n")
+
+
def logout(request, template_name='cas/logout.html'):
url = request.GET.get('url', None)
auth_logout(request)
- return render_to_response(template_name, {'url': url}, context_instance=RequestContext(request))
+ return render_to_response(template_name, {'url': url}, \
+ context_instance=RequestContext(request))
+
+
+def service_validate(request):
+ """Validate ticket via CAS v.2 protocol"""
+ service = request.GET.get('service', None)
+ ticket_string = request.GET.get('ticket', None)
+ if service is None or ticket_string is None:
+ return _cas2_error_response(INVALID_REQUEST)
+
+ try:
+ ticket = ServiceTicket.objects.get(ticket=ticket_string)
+ except ServiceTicket.DoesNotExist:
+ return _cas2_error_response(INVALID_TICKET)
+
+ if ticket.service != service:
+ ticket.delete()
+ return _cas2_error_response(INVALID_SERVICE)
+
+ user = ticket.user
+ ticket.delete()
+ return _cas2_sucess_response(user)
+
+
+def _cas2_error_response(code):
+ return HttpResponse(u''''<cas:serviceResponse xmlns:cas="http://www.yale.edu/tp/cas">
+ <cas:authenticationFailure code="%(code)s">
+ %(message)s
+ </cas:authenticationFailure>
+ </cas:serviceResponse>''' % {
+ 'code': code,
+ 'message': dict(ERROR_MESSAGES).get(code)
+ }, mimetype='text/xml')
+
+
+def _cas2_sucess_response(user):
+ return HttpResponse(auth_success_response(user), mimetype='text/xml')
+
+
+def auth_success_response(user):
+ from attribute_formatters import CAS, NSMAP, etree
+
+ response = etree.Element(CAS + 'serviceResponse', nsmap=NSMAP)
+ auth_success = etree.SubElement(response, CAS + 'authenticationSuccess')
+ username = etree.SubElement(auth_success, CAS + 'user')
+ username.text = user.username
+
+ if settings.CAS_CUSTOM_ATTRIBUTES_CALLBACK:
+ callback = get_callable(settings.CAS_CUSTOM_ATTRIBUTES_CALLBACK)
+ attrs = callback(user)
+ if len(attrs) > 0:
+ formater = get_callable(settings.CAS_CUSTOM_ATTRIBUTES_FORMATER)
+ formater(auth_success, attrs)
+ return unicode(etree.tostring(response, encoding='utf-8'), 'utf-8')
fnp / django-cas-provider.git / blobdiff