synapse-product/synapse/rest/well_known.py

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# -*- coding: utf-8 -*-
# Copyright 2018 New Vector 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 json
import logging
from twisted.web.resource import Resource
logger = logging.getLogger(__name__)
class WellKnownBuilder(object):
"""Utility to construct the well-known response
Args:
hs (synapse.server.HomeServer):
"""
def __init__(self, hs):
self._config = hs.config
def get_well_known(self):
# if we don't have a public_base_url, we can't help much here.
if self._config.public_baseurl is None:
return None
result = {
"m.homeserver": {
"base_url": self._config.public_baseurl,
},
}
if self._config.default_identity_server:
result["m.identity_server"] = {
"base_url": self._config.default_identity_server,
}
return result
class WellKnownResource(Resource):
"""A Twisted web resource which renders the .well-known file"""
isLeaf = 1
def __init__(self, hs):
Resource.__init__(self)
self._well_known_builder = WellKnownBuilder(hs)
def render_GET(self, request):
set_cors_headers(request)
r = self._well_known_builder.get_well_known()
if not r:
request.setResponseCode(404)
request.setHeader(b"Content-Type", b"text/plain")
return b'.well-known not available'
logger.error("returning: %s", r)
request.setHeader(b"Content-Type", b"application/json")
return json.dumps(r).encode("utf-8")