mirror of https://gitlab.crans.org/bde/nk20
131 lines
4.6 KiB
Python
131 lines
4.6 KiB
Python
# Copyright (C) 2018-2024 by BDE ENS Paris-Saclay
|
|
# SPDX-License-Identifier: GPL-3.0-or-later
|
|
|
|
from threading import local
|
|
|
|
from django.conf import settings
|
|
from django.contrib.auth import login
|
|
from django.contrib.auth.models import User
|
|
|
|
REQUEST_ATTR_NAME = getattr(settings, 'LOCAL_REQUEST_ATTR_NAME', '_current_request')
|
|
|
|
_thread_locals = local()
|
|
|
|
|
|
def _set_current_request(request=None):
|
|
setattr(_thread_locals, REQUEST_ATTR_NAME, request)
|
|
|
|
|
|
def get_current_request():
|
|
return getattr(_thread_locals, REQUEST_ATTR_NAME, None)
|
|
|
|
|
|
class SessionMiddleware(object):
|
|
"""
|
|
This middleware get the current user with his or her IP address on each request.
|
|
"""
|
|
|
|
def __init__(self, get_response):
|
|
self.get_response = get_response
|
|
|
|
def __call__(self, request):
|
|
# If we authenticate through a token to connect to the API, then we query the good user
|
|
if 'HTTP_AUTHORIZATION' in request.META and request.path.startswith("/api"):
|
|
token = request.META.get('HTTP_AUTHORIZATION')
|
|
if token.startswith("Token "):
|
|
token = token[6:]
|
|
from rest_framework.authtoken.models import Token
|
|
if Token.objects.filter(key=token).exists():
|
|
token_obj = Token.objects.get(key=token)
|
|
user = token_obj.user
|
|
request.user = user
|
|
session = request.session
|
|
session["permission_mask"] = 42
|
|
session.save()
|
|
|
|
_set_current_request(request)
|
|
response = self.get_response(request)
|
|
_set_current_request(None)
|
|
|
|
return response
|
|
|
|
|
|
class LoginByIPMiddleware(object):
|
|
"""
|
|
Allow some users to be authenticated based on their IP address.
|
|
For example, the "note" account should not be used elsewhere than the Kfet computer,
|
|
and should not have any password.
|
|
The password that is stored in database should be on the form "ipbased$my.public.ip.address".
|
|
"""
|
|
|
|
def __init__(self, get_response):
|
|
self.get_response = get_response
|
|
|
|
def __call__(self, request):
|
|
"""
|
|
If the user is not authenticated, get the used IP address
|
|
and check if an user is authorized to be automatically logged with this address.
|
|
If it is the case, the logging is performed with the full rights.
|
|
"""
|
|
if not request.user.is_authenticated:
|
|
if 'HTTP_X_REAL_IP' in request.META:
|
|
ip = request.META.get('HTTP_X_REAL_IP')
|
|
elif 'HTTP_X_FORWARDED_FOR' in request.META:
|
|
ip = request.META.get('HTTP_X_FORWARDED_FOR').split(', ')[0]
|
|
else:
|
|
ip = request.META.get('REMOTE_ADDR')
|
|
|
|
qs = User.objects.filter(password__iregex=f"ipbased\\$.*\\^{ip}\\$.*")
|
|
if qs.exists():
|
|
login(request, qs.get())
|
|
session = request.session
|
|
session["permission_mask"] = 42
|
|
session.save()
|
|
|
|
return self.get_response(request)
|
|
|
|
|
|
class TurbolinksMiddleware(object):
|
|
"""
|
|
Send the `Turbolinks-Location` header in response to a visit that was redirected,
|
|
and Turbolinks will replace the browser's topmost history entry.
|
|
"""
|
|
|
|
def __init__(self, get_response):
|
|
self.get_response = get_response
|
|
|
|
def __call__(self, request):
|
|
response = self.get_response(request)
|
|
|
|
is_turbolinks = request.META.get('HTTP_TURBOLINKS_REFERRER')
|
|
is_response_redirect = response.has_header('Location')
|
|
|
|
if is_turbolinks:
|
|
if is_response_redirect:
|
|
location = response['Location']
|
|
prev_location = request.session.pop('_turbolinks_redirect_to', None)
|
|
if prev_location is not None:
|
|
# relative subsequent redirect
|
|
if location.startswith('.'):
|
|
location = prev_location.split('?')[0] + location
|
|
request.session['_turbolinks_redirect_to'] = location
|
|
else:
|
|
if request.session.get('_turbolinks_redirect_to'):
|
|
location = request.session.pop('_turbolinks_redirect_to')
|
|
response['Turbolinks-Location'] = location
|
|
return response
|
|
|
|
|
|
class ClacksMiddleware(object):
|
|
"""
|
|
Add Clacks Overhead header on each response.
|
|
See https://www.gnuterrypratchett.com/
|
|
"""
|
|
def __init__(self, get_response):
|
|
self.get_response = get_response
|
|
|
|
def __call__(self, request):
|
|
response = self.get_response(request)
|
|
response['X-Clacks-Overhead'] = 'GNU Terry Pratchett'
|
|
return response
|