import logging
logger = logging.getLogger('cas_provider.views')
-import urllib
-import logging
-from urllib import urlencode
-import urllib2
-import urlparse
+from urllib.error import HTTPError, URLError
+from urllib.parse import parse_qsl, urlencode, urlparse, urlsplit, urlunsplit
+from urllib.request import urlopen
+from functools import wraps
+
+from django.views.decorators.debug import sensitive_post_parameters
+from django.views.decorators.cache import cache_control
+from django.utils.cache import patch_cache_control
+from django.views.decorators.csrf import csrf_protect
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.shortcuts import render_to_response
+
+from django.shortcuts import render
+from django.utils.translation import ugettext as _
from django.template import RequestContext
from django.contrib.auth import authenticate
-from django.core.urlresolvers import reverse
+from django.utils.translation import ugettext as _
from lxml import etree
from cas_provider.attribute_formatters import NSMAP, CAS
from cas_provider.models import ProxyGrantingTicket, ProxyTicket
from cas_provider.models import ServiceTicket
-from cas_provider.exceptions import SameEmailMismatchedPasswords
from cas_provider.forms import LoginForm, MergeLoginForm
from . import signals
+from django.urls import get_callable, reverse
+
__all__ = ['login', 'validate', 'logout', 'service_validate']
INVALID_TICKET = 'INVALID_TICKET'
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'),
+ (INVALID_TICKET, 'The provided ticket is invalid.'),
+ (INVALID_SERVICE, 'Service is invalid'),
+ (INVALID_REQUEST, 'Not all required parameters were sent.'),
+ (INTERNAL_ERROR, 'An internal error occurred during ticket validation'),
)
logger = logging.getLogger(__name__)
+_never_cache = cache_control(no_cache=True, must_revalidate=True)
+
+
+def never_cache(view_func):
+ """
+ Decorator that adds headers to a response so that it will
+ never be cached.
+ """
+ @wraps(view_func)
+ def _wrapped_view_func(request, *args, **kwargs):
+ response = view_func(request, *args, **kwargs)
+ patch_cache_control(response, no_cache=True,
+ must_revalidate=True, proxy_revalidate=True)
+ response['Pragma'] = 'no-cache'
+ return response
+ return _wrapped_view_func
+
+
+@sensitive_post_parameters()
+@csrf_protect
+@never_cache
def login(request, template_name='cas/login.html',
success_redirect=settings.LOGIN_REDIRECT_URL,
warn_template_name='cas/warn.html', **kwargs):
if form.is_valid():
service = form.cleaned_data.get('service', None)
try:
- auth_args = dict(username=form.cleaned_data['email'],
+ auth_args = dict(username=form.cleaned_data['username'],
password=form.cleaned_data['password'])
if merge:
# We only want to send the merge argument if it's
# through the auth backends properly.
auth_args['merge'] = merge
user = authenticate(**auth_args)
- except SameEmailMismatchedPasswords:
+ except:
# Need to merge the accounts?
if merge:
# We shouldn't get here...
base_url = reverse('cas_provider_merge')
args = dict(
success_redirect=success_redirect,
- email=form.cleaned_data['email'],
+ username=form.cleaned_data['username'],
)
if service is not None:
args['service'] = service
- args = urllib.urlencode(args)
+ args = 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.')
+ 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')})
+ form = MergeLoginForm(initial={'service': service, 'username': request.GET.get('username')})
else:
form = LoginForm(initial={'service': service})
- if user is not None and user.is_authenticated():
+ 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.')
+ errors.append(_('This account is disabled. Please contact us if you feel it should be enabled again.'))
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)
-
+
+ signals.on_cas_login_success.send(sender=login, request=request,
+ service=service, **kwargs)
+
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, {
+ return render(request, warn_template_name, {
'service': service,
'warn': False
- }, context_instance=RequestContext(request))
-
+ })
+
# Create a service ticket and redirect to the service.
ticket = ServiceTicket.objects.create(service=service, user=user)
if 'service' in request.session:
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))
+ return render(request, template_name, {'form': form, 'errors': errors})
+@never_cache
def validate(request):
"""Validate ticket via CAS v.1 protocol
"""
logger.info('Validation failed.')
return HttpResponse("no\n\n")
-
+
+@never_cache
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():
+ 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))
+ return render(request, template_name, {'url': url})
+@never_cache
def proxy(request):
targetService = request.GET['targetService']
pgt_id = request.GET['pgt']
return _cas2_error_response(INVALID_TICKET)
pt = ProxyTicket.objects.create(proxyGrantingTicket=proxyGrantingTicket,
- user=proxyGrantingTicket.serviceTicket.user,
+ user=proxyGrantingTicket.user,
service=targetService)
return _cas2_proxy_success(pt.ticket)
except ServiceTicket.DoesNotExist:
return _cas2_error_response(INVALID_TICKET)
- ticketUrl = urlparse.urlparse(ticket.service)
- serviceUrl = urlparse.urlparse(service)
+ ticketUrl = urlparse(ticket.service)
+ serviceUrl = urlparse(service)
if not(ticketUrl.hostname == serviceUrl.hostname and ticketUrl.path == serviceUrl.path and ticketUrl.port == serviceUrl.port):
return _cas2_error_response(INVALID_SERVICE)
if pgt:
pgtIouId = pgt.pgtiou
- if hasattr(ticket, 'proxyticket'):
- pgt = ticket.proxyticket.proxyGrantingTicket
+ try:
+ proxyTicket = ticket.proxyticket
+ except ProxyTicket.DoesNotExist:
+ pass
+ else:
+ pgt = 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
+ while pgt.pgt is not None:
+ proxies += (pgt.service,)
+ pgt = pgt.pgt
user = ticket.user
ticket.delete()
return _cas2_sucess_response(user, pgtIouId, proxies)
+@never_cache
def service_validate(request):
"""Validate ticket via CAS v.2 protocol"""
service = request.GET.get('service', None)
return ticket_validate(service, ticket_string, pgtUrl)
+@never_cache
def proxy_validate(request):
"""Validate ticket via CAS v.2 protocol"""
service = request.GET.get('service', None)
def generate_proxy_granting_ticket(pgt_url, ticket):
proxy_callback_good_status = (200, 202, 301, 302, 304)
- uri = list(urlparse.urlsplit(pgt_url))
+ uri = list(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
+ pgt.user = ticket.user
+ pgt.service = ticket.service
+ # Remember if it's a chained PGT.
+ pgt.pgt = getattr(ticket, 'proxyGrantingTicket', None)
params = {'pgtId': pgt.ticket, 'pgtIou': pgt.pgtiou}
- query = dict(urlparse.parse_qsl(uri[4]))
+ query = dict(parse_qsl(uri[4]))
query.update(params)
uri[3] = urlencode(query)
try:
- response = urllib2.urlopen(urlparse.urlunsplit(uri))
- except urllib2.HTTPError as e:
+ urlopen(urlunsplit(uri))
+ except 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))
+ logger.debug('Checking Proxy Callback URL {0} returned {1}. Not issuing PGT.'.format(uri, e.code))
return
- except urllib2.URLError as e:
- logger.debug('Checking Proxy Callback URL {} raised URLError. Not issuing PGT.'.format(uri))
+ except URLError as e:
+ logger.debug('Checking Proxy Callback URL {0} raised URLError. Not issuing PGT.'.format(uri))
return
pgt.save()
def _cas2_sucess_response(user, pgt=None, proxies=None):
- return HttpResponse(auth_success_response(user, pgt, proxies), mimetype='text/xml')
+ return HttpResponse(auth_success_response(user, pgt, proxies), content_type='text/xml')
def _cas2_error_response(code, message=None):
- return HttpResponse(u'''<cas:serviceResponse xmlns:cas="http://www.yale.edu/tp/cas">
+ return HttpResponse('''<cas:serviceResponse xmlns:cas="http://www.yale.edu/tp/cas">
<cas:authenticationFailure code="%(code)s">
%(message)s
</cas:authenticationFailure>
</cas:serviceResponse>''' % {
'code': code,
'message': message if message else dict(ERROR_MESSAGES).get(code)
- }, mimetype='text/xml')
+ }, content_type='text/xml')
def proxy_success(pt):
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')
+ return etree.tostring(response, encoding='unicode')
def auth_success_response(user, pgt, proxies):
for i in rr]
if identifiers:
- attrs['identifiers'] = identifiers
+ # Singular `identifier`, as that is the name of the element tag(s).
+ attrs['identifier'] = identifiers
if attrs:
formatter = get_callable(settings.CAS_CUSTOM_ATTRIBUTES_FORMATER)
proxyElement = etree.SubElement(proxiesElement, CAS + "proxy")
proxyElement.text = proxy
- return unicode(etree.tostring(response, encoding='utf-8'), 'utf-8')
+ return etree.tostring(response, encoding='unicode')
fnp / django-cas-provider.git / blobdiff