69 lines
2.8 KiB
Python
69 lines
2.8 KiB
Python
# django-mellon - SAML2 authentication for Django
|
|
# Copyright (C) 2014-2019 Entr'ouvert
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Affero General Public License as
|
|
# published by the Free Software Foundation, either version 3 of the
|
|
# License, or (at your option) any later version.
|
|
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU Affero General Public License for more details.
|
|
|
|
# You should have received a copy of the GNU Affero General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
from __future__ import unicode_literals
|
|
|
|
from django.utils.http import urlencode
|
|
from django.http import HttpResponseRedirect
|
|
|
|
from . import app_settings, utils
|
|
from .compat import reverse, MiddlewareClass, is_authenticated
|
|
|
|
PASSIVE_TRIED_COOKIE = 'MELLON_PASSIVE_TRIED'
|
|
|
|
|
|
class PassiveAuthenticationMiddleware(MiddlewareClass):
|
|
def process_response(self, request, response):
|
|
# When unlogged remove the PASSIVE_TRIED cookie
|
|
if app_settings.OPENED_SESSION_COOKIE_NAME \
|
|
and PASSIVE_TRIED_COOKIE in request.COOKIES \
|
|
and app_settings.OPENED_SESSION_COOKIE_NAME not in request.COOKIES:
|
|
response.delete_cookie(PASSIVE_TRIED_COOKIE)
|
|
return response
|
|
|
|
def process_view(self, request, view_func, view_args, view_kwargs):
|
|
# Skip AJAX requests
|
|
if request.is_ajax():
|
|
return
|
|
# Skip AJAX and media/script requests, unless mellon_no_passive is False on the view
|
|
if getattr(view_func, 'mellon_no_passive', True) and 'text/html' not in request.META.get('HTTP_ACCEPT', ''):
|
|
return
|
|
# Skip views asking to be skiped
|
|
if getattr(view_func, 'mellon_no_passive', False):
|
|
return
|
|
# Skip mellon views
|
|
if request.resolver_match.url_name and request.resolver_match.url_name.startswith('mellon_'):
|
|
return
|
|
if not any(utils.get_idps()):
|
|
return
|
|
if not app_settings.OPENED_SESSION_COOKIE_NAME:
|
|
return
|
|
if hasattr(request, 'user') and is_authenticated(request.user):
|
|
return
|
|
if PASSIVE_TRIED_COOKIE in request.COOKIES:
|
|
return
|
|
if app_settings.OPENED_SESSION_COOKIE_NAME not in request.COOKIES:
|
|
return
|
|
# all is good, try passive login
|
|
params = {
|
|
'next': request.build_absolute_uri(),
|
|
'passive': '',
|
|
}
|
|
url = reverse('mellon_login') + '?%s' % urlencode(params)
|
|
response = HttpResponseRedirect(url)
|
|
# prevent loops
|
|
response.set_cookie(PASSIVE_TRIED_COOKIE, value='1', max_age=None)
|
|
return response
|