61 lines
2.0 KiB
Python
61 lines
2.0 KiB
Python
# -*- coding: utf-8 -*-
|
|
# 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, client = yield self.auth.get_user_by_req(request)
|
|
|
|
turnUris = self.hs.config.turn_uris
|
|
turnSecret = self.hs.config.turn_shared_secret
|
|
userLifetime = self.hs.config.turn_user_lifetime
|
|
if not turnUris or not turnSecret or not userLifetime:
|
|
defer.returnValue((200, {}))
|
|
|
|
expiry = (self.hs.get_clock().time_msec() + userLifetime) / 1000
|
|
username = "%d:%s" % (expiry, auth_user.to_string())
|
|
|
|
mac = hmac.new(turnSecret, msg=username, digestmod=hashlib.sha1)
|
|
# We need to use standard base64 encoding here, *not* syutil's
|
|
# encode_base64 because we need to add the standard padding to get the
|
|
# same result as the TURN server.
|
|
password = base64.b64encode(mac.digest())
|
|
|
|
defer.returnValue((200, {
|
|
'username': username,
|
|
'password': password,
|
|
'ttl': userLifetime / 1000,
|
|
'uris': turnUris,
|
|
}))
|
|
|
|
def on_OPTIONS(self, request):
|
|
return (200, {})
|
|
|
|
|
|
def register_servlets(hs, http_server):
|
|
VoipRestServlet(hs).register(http_server)
|