anonymousland-synapse/synapse/rest/client/v1/voip.py

61 lines
2.0 KiB
Python
Raw Normal View History

# -*- coding: utf-8 -*-
2015-01-06 08:21:39 -05:00
# Copyright 2014, 2015 OpenMarket Ltd
#
# 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.
from twisted.internet import defer
from base import ClientV1RestServlet, client_path_pattern
import hmac
import hashlib
import base64
class VoipRestServlet(ClientV1RestServlet):
PATTERN = client_path_pattern("/voip/turnServer$")
@defer.inlineCallbacks
def on_GET(self, request):
auth_user, _ = yield self.auth.get_user_by_req(request)
turnUris = self.hs.config.turn_uris
2014-09-23 13:17:24 -04:00
turnSecret = self.hs.config.turn_shared_secret
userLifetime = self.hs.config.turn_user_lifetime
2014-09-24 11:04:33 -04:00
if not turnUris or not turnSecret or not userLifetime:
2014-10-30 07:10:17 -04:00
defer.returnValue((200, {}))
expiry = (self.hs.get_clock().time_msec() + userLifetime) / 1000
username = "%d:%s" % (expiry, auth_user.to_string())
2014-10-30 07:10:17 -04:00
mac = hmac.new(turnSecret, msg=username, digestmod=hashlib.sha1)
# We need to use standard padded base64 encoding here
2014-10-30 07:10:17 -04:00
# encode_base64 because we need to add the standard padding to get the
# same result as the TURN server.
password = base64.b64encode(mac.digest())
2014-10-30 07:10:17 -04:00
defer.returnValue((200, {
'username': username,
'password': password,
'ttl': userLifetime / 1000,
'uris': turnUris,
2014-10-30 07:10:17 -04:00
}))
def on_OPTIONS(self, request):
return (200, {})
def register_servlets(hs, http_server):
VoipRestServlet(hs).register(http_server)