78 lines
2.5 KiB
Python
78 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014-2016 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.
|
|
|
|
import base64
|
|
import hashlib
|
|
import hmac
|
|
|
|
from synapse.http.servlet import RestServlet
|
|
from synapse.rest.client.v2_alpha._base import client_patterns
|
|
|
|
|
|
class VoipRestServlet(RestServlet):
|
|
PATTERNS = client_patterns("/voip/turnServer$", v1=True)
|
|
|
|
def __init__(self, hs):
|
|
super(VoipRestServlet, self).__init__()
|
|
self.hs = hs
|
|
self.auth = hs.get_auth()
|
|
|
|
async def on_GET(self, request):
|
|
requester = await self.auth.get_user_by_req(
|
|
request, self.hs.config.turn_allow_guests
|
|
)
|
|
|
|
turnUris = self.hs.config.turn_uris
|
|
turnSecret = self.hs.config.turn_shared_secret
|
|
turnUsername = self.hs.config.turn_username
|
|
turnPassword = self.hs.config.turn_password
|
|
userLifetime = self.hs.config.turn_user_lifetime
|
|
|
|
if turnUris and turnSecret and userLifetime:
|
|
expiry = (self.hs.get_clock().time_msec() + userLifetime) / 1000
|
|
username = "%d:%s" % (expiry, requester.user.to_string())
|
|
|
|
mac = hmac.new(
|
|
turnSecret.encode(), msg=username.encode(), digestmod=hashlib.sha1
|
|
)
|
|
# We need to use standard padded base64 encoding here
|
|
# encode_base64 because we need to add the standard padding to get the
|
|
# same result as the TURN server.
|
|
password = base64.b64encode(mac.digest())
|
|
|
|
elif turnUris and turnUsername and turnPassword and userLifetime:
|
|
username = turnUsername
|
|
password = turnPassword
|
|
|
|
else:
|
|
return 200, {}
|
|
|
|
return (
|
|
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)
|