Sunil Mohan Adapa 0f807bcd48
sso: Use new features of axes, log axes messages
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
2019-07-21 09:05:58 -04:00

123 lines
4.1 KiB
Python

#
# This file is part of FreedomBox.
#
# 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/>.
#
"""
Views for the Single Sign On app of FreedomBox.
"""
import logging
import os
import urllib
import axes.utils
from axes.decorators import axes_form_invalid
from django.contrib.auth import REDIRECT_FIELD_NAME
from django.contrib.auth.views import LoginView, LogoutView
from django.http import HttpResponseRedirect
from plinth import actions, utils, web_framework
from .forms import AuthenticationForm
PRIVATE_KEY_FILE_NAME = 'privkey.pem'
SSO_COOKIE_NAME = 'auth_pubtkt'
KEYS_DIRECTORY = '/etc/apache2/auth-pubtkt-keys'
logger = logging.getLogger(__name__)
def set_ticket_cookie(user, response):
"""Generate and set a mod_auth_pubtkt as a cookie in the provided
response.
"""
tokens = list(map(lambda g: g.name, user.groups.all()))
private_key_file = os.path.join(KEYS_DIRECTORY, PRIVATE_KEY_FILE_NAME)
ticket = actions.superuser_run('auth-pubtkt', [
'generate-ticket', '--uid', user.username, '--private-key-file',
private_key_file, '--tokens', ','.join(tokens)
])
response.set_cookie(SSO_COOKIE_NAME, urllib.parse.quote(ticket))
return response
class SSOLoginView(LoginView):
"""View to login to FreedomBox and set a auth_pubtkt cookie.
Cookie will be used to provide Single Sign On for some other applications.
"""
redirect_authenticated_user = True
template_name = 'login.html'
def dispatch(self, request, *args, **kwargs):
response = super(SSOLoginView, self).dispatch(request, *args, **kwargs)
if request.user.is_authenticated:
return set_ticket_cookie(request.user, response)
return response
# XXX: Use axes middleware and authentication backend instead of
# axes_form_invalid when axes >= 5.0.0 becomes available in Debian stable.
@axes_form_invalid
def form_invalid(self, *args, **kwargs):
return super(SSOLoginView, self).form_invalid(*args, **kwargs)
class CaptchaLoginView(LoginView):
redirect_authenticated_user = True
template_name = 'login.html'
form_class = AuthenticationForm
def dispatch(self, request, *args, **kwargs):
response = super(CaptchaLoginView, self).dispatch(
request, *args, **kwargs)
if not request.POST:
return response
if not request.user.is_authenticated:
return response
# Successful authentication
if utils.is_axes_old():
ip_address = web_framework.get_ip_address_from_request(request)
axes.utils.reset(ip=ip_address)
logger.info(
'Login attempts reset for IP after successful login: %s',
ip_address)
return set_ticket_cookie(request.user, response)
class SSOLogoutView(LogoutView):
"""View to log out of FreedomBox and remove the auth_pubtkt cookie."""
template_name = 'index.html'
def dispatch(self, request, *args, **kwargs):
response = super(SSOLogoutView, self).dispatch(request, *args,
**kwargs)
response.delete_cookie(SSO_COOKIE_NAME)
return response
def refresh(request):
"""Simulate cookie refresh - redirect logged in user with a new cookie"""
redirect_url = request.GET.get(REDIRECT_FIELD_NAME, '')
response = HttpResponseRedirect(redirect_url)
response.delete_cookie(SSO_COOKIE_NAME)
# Redirect with cookie doesn't work with 300 series
response.status_code = 200
return set_ticket_cookie(request.user, response)