/usr/lib/python3/dist-packages/tornadio2/preflight.py is in python3-tornadio2 0.0.4-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | # -*- coding: utf-8 -*-
#
# Copyright: (c) 2011 by the Serge S. Koval, see AUTHORS for more details.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
tornadio2.preflight
~~~~~~~~~~~~~~~~~~~
Transport protocol router and main entry point for all socket.io clients.
"""
from tornado.web import RequestHandler, asynchronous
class PreflightHandler(RequestHandler):
"""CORS preflight handler"""
@asynchronous
def options(self, *args, **kwargs):
"""XHR cross-domain OPTIONS handler"""
self.preflight()
self.finish()
def preflight(self):
"""Handles request authentication"""
if 'Origin' in self.request.headers:
if self.verify_origin():
self.set_header('Access-Control-Allow-Origin',
self.request.headers['Origin'])
self.set_header('Access-Control-Allow-Credentials', 'true')
self.set_header('Access-Control-Allow-Methods', 'POST, GET, OPTIONS')
return True
else:
return False
else:
return True
def verify_origin(self):
"""Verify if request can be served"""
# TODO: Verify origin
return True
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