From: deyk Date: Fri, 13 Apr 2012 22:25:48 +0000 (-0700) Subject: Merge remote-tracking branch 'cas2/master' X-Git-Tag: 22.4~32 X-Git-Url: https://git.mdrn.pl/django-cas-provider.git/commitdiff_plain/82555c55f77395067231c1c22685597f12706902?hp=-c Merge remote-tracking branch 'cas2/master' Conflicts: .gitignore cas_provider/forms.py cas_provider/models.py cas_provider/urls.py cas_provider/views.py Merged from https://github.com/castlabs/django-cas-provider PT #27996721 --- 82555c55f77395067231c1c22685597f12706902 diff --combined cas_provider/forms.py index d9974a2,ba6aff0..8ec7a22 --- a/cas_provider/forms.py +++ b/cas_provider/forms.py @@@ -1,26 -1,37 +1,33 @@@ from django import forms + from django.conf import settings + from django.contrib.auth import authenticate + from django.contrib.auth.forms import AuthenticationForm + from django.forms import ValidationError + from django.utils.translation import ugettext_lazy as _ + from models import LoginTicket + import datetime - class LoginForm(forms.Form): -__all__ = ['LoginForm', ] - - + class LoginForm(AuthenticationForm): - lt = forms.CharField(widget=forms.HiddenInput) + email = forms.CharField(widget=forms.TextInput(attrs={'autofocus': 'autofocus', + 'max_length': '255'})) + password = forms.CharField(widget=forms.PasswordInput) service = forms.CharField(widget=forms.HiddenInput, required=False) + remember_me = forms.BooleanField(required=False, label="Keep me signed in", + widget=forms.CheckboxInput(attrs={'class': 'remember_me'})) - def clean_lt(self): - ticket = self.cleaned_data['lt'] - timeframe = datetime.datetime.now() - \ - datetime.timedelta(minutes=settings.CAS_TICKET_EXPIRATION) - try: - return LoginTicket.objects.get(ticket=ticket, created__gte=timeframe) - except LoginTicket.DoesNotExist: - raise ValidationError(_('Login ticket expired. Please try again.')) - return ticket + def __init__(self, *args, **kwargs): + # renew = kwargs.pop('renew', None) + # gateway = kwargs.pop('gateway', None) + request = kwargs.pop('request', None) + super(LoginForm, self).__init__(*args, **kwargs) + self.request = request - def clean(self): - AuthenticationForm.clean(self) - self.cleaned_data.get('lt').delete() - return self.cleaned_data + def clean_remember_me(self): + remember = self.cleaned_data['remember_me'] + if not remember and self.request is not None: + self.request.session.set_expiry(0) + - def get_errors(self): - errors = [] - for k, error in self.errors.items(): - errors += [e for e in error] - return errors +class MergeLoginForm(LoginForm): + email = forms.CharField(max_length=255, widget=forms.HiddenInput) diff --combined cas_provider/urls.py index f91786b,37da0af..154aac0 --- a/cas_provider/urls.py +++ b/cas_provider/urls.py @@@ -1,11 -1,11 +1,13 @@@ - from django.conf.urls.defaults import * + from django.conf.urls.defaults import patterns, url - from views import * - urlpatterns = patterns('', - url(r'^login/', login), - url(r'^socialauth-login/$', socialauth_login), - url(r'^validate/', validate), - url(r'^logout/', logout), - url(r'^login/merge/', login, {'merge': True, 'template_name': 'cas/merge.html'}) - ) + urlpatterns = patterns('cas_provider.views', ++ url(r'^login/merge/', 'login', {'merge': True, 'template_name': 'cas/merge.html'}) + url(r'^login/?$', 'login', name='cas_login'), ++ url(r'^socialauth-login/$', 'socialauth_login', name='cas_socialauth_login'), + url(r'^validate/?$', 'validate', name='cas_validate'), + url(r'^proxy/?$', 'proxy', name='proxy'), + url(r'^serviceValidate/?$', 'service_validate', name='cas_service_validate'), + url(r'^proxyValidate/?$', 'proxy_validate', name='cas_proxy_validate'), + url(r'^logout/?$', 'logout', name='cas_logout'), + ) diff --combined cas_provider/views.py index 5ba62e6,953847b..a0847b9 --- a/cas_provider/views.py +++ b/cas_provider/views.py @@@ -1,152 -1,266 +1,355 @@@ import logging -from lxml import etree +logger = logging.getLogger('cas_provider.views') +import urllib + ++import logging + from urllib import urlencode + import urllib2 + import urlparse ++ +from django.http import HttpResponse, 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 import authenticate - from django.contrib.auth import login as auth_login, logout as auth_logout +from django.core.urlresolvers import reverse + - from forms import LoginForm, MergeLoginForm - from models import ServiceTicket - from utils import create_service_ticket - from exceptions import SameEmailMismatchedPasswords ++from lxml import etree + from cas_provider.attribute_formatters import NSMAP, CAS + from cas_provider.models import ProxyGrantingTicket, ProxyTicket -from forms import LoginForm -from models import ServiceTicket, LoginTicket ++from cas_provider.models import ServiceTicket + ++from cas_provider.exceptions import SameEmailMismatchedPasswords ++from cas_provider.forms import LoginForm, MergeLoginForm + +from . import signals - __all__ = ['login', 'validate', 'logout'] + __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 _build_service_url(service, ticket): - if service.find('?') == -1: - return service + '?ticket=' + ticket - else: - return service + '&ticket=' + ticket + logger = logging.getLogger(__name__) - def login(request, template_name='cas/login.html', success_redirect='/account/', **kwargs): -def login(request, template_name='cas/login.html',\ ++ ++def login(request, template_name='cas/login.html', + success_redirect=settings.LOGIN_REDIRECT_URL, - warn_template_name='cas/warn.html', - form_class=LoginForm): ++ warn_template_name='cas/warn.html', **kwargs): + merge = kwargs.get('merge', False) + logging.debug('CAS Provider Login view. Method is %s, merge is %s, template is %s.', + request.method, merge, template_name) + service = request.GET.get('service', None) - if request.user.is_authenticated(): - if service is not None: - 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) + if service is not None: + # Save the service on the session, for later use if we end up + # in one of the more complicated workflows. + request.session['service'] = service + + user = request.user + + errors = [] + if request.method == 'POST': - form = form_class(data=request.POST, request=request) + if merge: + form = MergeLoginForm(request.POST, request=request) + else: + form = LoginForm(request.POST, request=request) + if form.is_valid(): - user = form.get_user() - auth_login(request, user) - service = form.cleaned_data.get('service') - if service is not None: + service = form.cleaned_data.get('service', None) + try: + auth_args = dict(username=form.cleaned_data['email'], + password=form.cleaned_data['password']) + if merge: + # We only want to send the merge argument if it's + # True. If it it's False, we want it to propagate + # through the auth backends properly. + auth_args['merge'] = merge + user = authenticate(**auth_args) + except SameEmailMismatchedPasswords: + # Need to merge the accounts? + if merge: + # We shouldn't get here... + raise + else: + base_url = reverse('cas_provider_merge') + args = dict( + success_redirect=success_redirect, + email=form.cleaned_data['email'], + ) + if service is not None: + args['service'] = service + args = urllib.urlencode(args) + + url = '%s?%s' % (base_url, args) + logging.debug('Redirecting to %s', url) + return HttpResponseRedirect(url) + + if user is None: + errors.append('Incorrect username and/or password.') + else: + if user.is_active: + auth_login(request, user) + + else: # Not a POST... + if merge: + form = MergeLoginForm(initial={'service': service, 'email': request.GET.get('email')}) + else: + form = LoginForm(initial={'service': service}) + + if user is not None and user.is_authenticated(): + # We have an authenticated user. + if not user.is_active: + errors.append('This account is disabled.') + else: + # Send the on_cas_login signal. If we get an HttpResponse, return that. + for receiver, response in signals.on_cas_login.send(sender=login, request=request, **kwargs): + if isinstance(response, HttpResponse): + return response + + if service is None: + # Try and pull the service off the session + service = request.session.pop('service', service) + + if service is None: + # Normal internal success redirection. + logging.debug('Redirecting to %s', success_redirect) + return HttpResponseRedirect(success_redirect) + else: ++ if request.GET.get('warn', False): ++ return render_to_response(warn_template_name, { ++ 'service': service, ++ 'warn': False ++ }, context_instance=RequestContext(request)) ++ + # Create a service ticket and redirect to the service. - ticket = create_service_ticket(request.user, service) + ticket = ServiceTicket.objects.create(service=service, user=user) - success_redirect = ticket.get_redirect_url() - return HttpResponseRedirect(success_redirect) - else: - form = form_class(request=request, initial={ - 'service': service, - 'lt': LoginTicket.objects.create() - }) - if hasattr(request, 'session') and hasattr(request.session, 'set_test_cookie'): - request.session.set_test_cookie() - return render_to_response(template_name, { - 'form': form, - 'errors': form.get_errors() if hasattr(form, 'get_errors') else None, - }, context_instance=RequestContext(request)) + if 'service' in request.session: + # Don't need this any more. + del request.session['service'] + - url = _build_service_url(service, ticket.ticket) ++ url = ticket.get_redirect_url() + logging.debug('Redirecting to %s', url) + return HttpResponseRedirect(url) + + logging.debug('Rendering response on %s, merge is %s', template_name, merge) + return render_to_response(template_name, {'form': form, 'errors': errors}, context_instance=RequestContext(request)) def validate(request): - """Validate ticket via CAS v.1 protocol""" ++ """Validate ticket via CAS v.1 protocol ++ """ service = request.GET.get('service', None) ticket_string = request.GET.get('ticket', None) + logger.info('Validating ticket %s for %s', ticket_string, service) 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 + except ServiceTicket.DoesNotExist: + logger.exception("Tried to validate with an invalid ticket %s for %s", ticket_string, service) + except Exception as e: + logger.exception('Got an exception: %s', e) + else: username = ticket.user.username - return HttpResponse("yes\n%s\n" % username) - except: - pass - return HttpResponse("no\n\n") + ticket.delete() + + results = signals.on_cas_collect_histories.send(sender=validate, for_email=ticket.user.email) + histories = '\n'.join('\n'.join(rs) for rc, rs in results) + logger.info('Validated %s %s', username, "(also %s)" % histories if histories else '') + return HttpResponse("yes\n%s\n%s" % (username, histories)) + logger.info('Validation failed.') + return HttpResponse("no\n\n") + - def logout(request, template_name='cas/logout.html'): + def logout(request, template_name='cas/logout.html', + auto_redirect=settings.CAS_AUTO_REDIRECT_AFTER_LOGOUT): url = request.GET.get('url', None) - auth_logout(request) - return render_to_response(template_name, {'url': url}, context_instance=RequestContext(request)) + if request.user.is_authenticated(): + for ticket in ServiceTicket.objects.filter(user=request.user): + ticket.delete() + auth_logout(request) + if url and auto_redirect: + return HttpResponseRedirect(url) + return render_to_response(template_name, {'url': url}, + context_instance=RequestContext(request)) + + + def proxy(request): + targetService = request.GET['targetService'] + pgt_id = request.GET['pgt'] + + try: + proxyGrantingTicket = ProxyGrantingTicket.objects.get(ticket=pgt_id) + except ProxyGrantingTicket.DoesNotExist: + return _cas2_error_response(INVALID_TICKET) + + pt = ProxyTicket.objects.create(proxyGrantingTicket=proxyGrantingTicket, + user=proxyGrantingTicket.serviceTicket.user, + service=targetService) + return _cas2_proxy_success(pt.ticket) + + + def ticket_validate(service, ticket_string, pgtUrl): + if service is None or ticket_string is None: + return _cas2_error_response(INVALID_REQUEST) + + try: + if ticket_string.startswith('ST'): + ticket = ServiceTicket.objects.get(ticket=ticket_string) + elif ticket_string.startswith('PT'): + ticket = ProxyTicket.objects.get(ticket=ticket_string) + else: + return _cas2_error_response(INVALID_TICKET, + '%(ticket)s is neither Service (ST-...) nor Proxy Ticket (PT-...)' % { + 'ticket': ticket_string}) + except ServiceTicket.DoesNotExist: + return _cas2_error_response(INVALID_TICKET) + - ticketUrl = urlparse.urlparse(ticket.service) - serviceUrl = urlparse.urlparse(service) ++ ticketUrl = urlparse.urlparse(ticket.service) ++ serviceUrl = urlparse.urlparse(service) + + if not(ticketUrl.hostname == serviceUrl.hostname and ticketUrl.path == serviceUrl.path and ticketUrl.port == serviceUrl.port): + return _cas2_error_response(INVALID_SERVICE) + + pgtIouId = None + proxies = () + if pgtUrl is not None: + pgt = generate_proxy_granting_ticket(pgtUrl, ticket) + if pgt: + pgtIouId = pgt.pgtiou + + if hasattr(ticket, 'proxyticket'): + pgt = ticket.proxyticket.proxyGrantingTicket + # I am issued by this proxy granting ticket + if hasattr(pgt.serviceTicket, 'proxyticket'): + while pgt: + if hasattr(pgt.serviceTicket, 'proxyticket'): + proxies += (pgt.serviceTicket.service,) + pgt = pgt.serviceTicket.proxyticket.proxyGrantingTicket + else: + pgt = None + + user = ticket.user + return _cas2_sucess_response(user, pgtIouId, proxies) + + + def service_validate(request): + """Validate ticket via CAS v.2 protocol""" + service = request.GET.get('service', None) + ticket_string = request.GET.get('ticket', None) + pgtUrl = request.GET.get('pgtUrl', None) + if ticket_string.startswith('PT-'): + return _cas2_error_response(INVALID_TICKET, "serviceValidate cannot verify proxy tickets") + else: + return ticket_validate(service, ticket_string, pgtUrl) + + + def proxy_validate(request): + """Validate ticket via CAS v.2 protocol""" + service = request.GET.get('service', None) + ticket_string = request.GET.get('ticket', None) + pgtUrl = request.GET.get('pgtUrl', None) + return ticket_validate(service, ticket_string, pgtUrl) + + + def generate_proxy_granting_ticket(pgt_url, ticket): + proxy_callback_good_status = (200, 202, 301, 302, 304) + uri = list(urlparse.urlsplit(pgt_url)) + + pgt = ProxyGrantingTicket() + pgt.serviceTicket = ticket + pgt.targetService = pgt_url + + if hasattr(ticket, 'proxyGrantingTicket'): + # here we got a proxy ticket! tata! + pgt.pgt = ticket.proxyGrantingTicket + + params = {'pgtId': pgt.ticket, 'pgtIou': pgt.pgtiou} + + query = dict(urlparse.parse_qsl(uri[4])) + query.update(params) + + uri[3] = urlencode(query) + + try: + response = urllib2.urlopen(urlparse.urlunsplit(uri)) - except urllib2.HTTPError, e: ++ except urllib2.HTTPError as e: + if not e.code in proxy_callback_good_status: + logger.debug('Checking Proxy Callback URL {} returned {}. Not issuing PGT.'.format(uri, e.code)) + return - except urllib2.URLError, e: ++ except urllib2.URLError as e: + logger.debug('Checking Proxy Callback URL {} raised URLError. Not issuing PGT.'.format(uri)) + return + + pgt.save() + return pgt + + + def _cas2_proxy_success(pt): + return HttpResponse(proxy_success(pt)) + + + def _cas2_sucess_response(user, pgt=None, proxies=None): + return HttpResponse(auth_success_response(user, pgt, proxies), mimetype='text/xml') + + + def _cas2_error_response(code, message=None): + return HttpResponse(u''' + + %(message)s + + ''' % { + 'code': code, + 'message': message if message else dict(ERROR_MESSAGES).get(code) + }, mimetype='text/xml') + + + def proxy_success(pt): + response = etree.Element(CAS + 'serviceResponse', nsmap=NSMAP) + proxySuccess = etree.SubElement(response, CAS + 'proxySuccess') + proxyTicket = etree.SubElement(proxySuccess, CAS + 'proxyTicket') + proxyTicket.text = pt + return unicode(etree.tostring(response, encoding='utf-8'), 'utf-8') + + + def auth_success_response(user, pgt, proxies): + 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) + + if pgt: + pgtElement = etree.SubElement(auth_success, CAS + 'proxyGrantingTicket') + pgtElement.text = pgt + + if proxies: + proxiesElement = etree.SubElement(auth_success, CAS + "proxies") + for proxy in proxies: + proxyElement = etree.SubElement(proxiesElement, CAS + "proxy") + proxyElement.text = proxy + + return unicode(etree.tostring(response, encoding='utf-8'), 'utf-8')