X-Git-Url: https://git.mdrn.pl/django-cas-provider.git/blobdiff_plain/b1241567826c1d3e7cfdc5bbe31700b85013a57b..58ced7c998424be00d9a0aa7db4c9aed14fdd730:/cas_provider/views.py?ds=sidebyside diff --git a/cas_provider/views.py b/cas_provider/views.py index 0483a32..c9a44db 100644 --- a/cas_provider/views.py +++ b/cas_provider/views.py @@ -1,62 +1,76 @@ -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 forms import LoginForm +from models import ServiceTicket, LoginTicket + + +__all__ = ['login', 'validate', 'logout', 'service_validate'] -from cas_provider.forms import LoginForm -from cas_provider.models import ServiceTicket, LoginTicket, auth_success_response -from cas_provider.utils import create_service_ticket -__all__ = ['login', 'validate', 'service_validate', 'logout'] +INVALID_TICKET = 'INVALID_TICKET' +INVALID_SERVICE = 'INVALID_SERVICE' +INVALID_REQUEST = 'INVALID_REQUEST' +INTERNAL_ERROR = 'INTERNAL_ERROR' -def login(request, template_name='cas/login.html', success_redirect='/accounts/'): +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\n%s\n" % username) @@ -64,28 +78,66 @@ def validate(request): pass return HttpResponse("no\n\n") + +def logout(request, template_name='cas/logout.html', \ + auto_redirect=settings.CAS_AUTO_REDIRECT_AFTER_LOGOUT): + url = request.GET.get('url', None) + if request.user.is_authenticated(): + auth_logout(request) + if url and auto_redirect: + return HttpResponseRedirect(url) + 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 HttpResponse(''' - - Not all required parameters were sent. - - ''', mimetype='text/xml') - + return _cas2_error_response(INVALID_REQUEST) + try: ticket = ServiceTicket.objects.get(ticket=ticket_string) - ticket.delete() - return HttpResponse(auth_success_response(ticket.user), mimetype='text/xml') except ServiceTicket.DoesNotExist: - return HttpResponse(''' - - The provided ticket is invalid. + 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'''' + + %(message)s - ''', mimetype='text/xml') + ''' % { + 'code': code, + 'message': dict(ERROR_MESSAGES).get(code) + }, mimetype='text/xml') -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)) \ No newline at end of file + +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')