synapse-old/synapse/rest/well_known.py

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# 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 logging
from typing import TYPE_CHECKING, Optional
from twisted.web.resource import Resource
from twisted.web.server import Request
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from synapse.http.server import set_cors_headers
from synapse.types import JsonDict
from synapse.util import json_encoder
from synapse.util.stringutils import parse_server_name
if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
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class WellKnownBuilder:
def __init__(self, hs: "HomeServer"):
self._config = hs.config
def get_well_known(self) -> Optional[JsonDict]:
if not self._config.server.serve_client_wellknown:
return None
result = {"m.homeserver": {"base_url": self._config.server.public_baseurl}}
if self._config.registration.default_identity_server:
result["m.identity_server"] = {
"base_url": self._config.registration.default_identity_server
}
return result
class ClientWellKnownResource(Resource):
"""A Twisted web resource which renders the .well-known/matrix/client file"""
isLeaf = 1
def __init__(self, hs: "HomeServer"):
Resource.__init__(self)
self._well_known_builder = WellKnownBuilder(hs)
def render_GET(self, request: Request) -> bytes:
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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.debug("returning: %s", r)
request.setHeader(b"Content-Type", b"application/json")
return json_encoder.encode(r).encode("utf-8")
class ServerWellKnownResource(Resource):
"""Resource for .well-known/matrix/server, redirecting to port 443"""
isLeaf = 1
def __init__(self, hs: "HomeServer"):
super().__init__()
self._serve_server_wellknown = hs.config.server.serve_server_wellknown
host, port = parse_server_name(hs.config.server.server_name)
# If we've got this far, then https://<server_name>/ must route to us, so
# we just redirect the traffic to port 443 instead of 8448.
if port is None:
port = 443
self._response = json_encoder.encode({"m.server": f"{host}:{port}"}).encode(
"utf-8"
)
def render_GET(self, request: Request) -> bytes:
if not self._serve_server_wellknown:
request.setResponseCode(404)
request.setHeader(b"Content-Type", b"text/plain")
return b"404. Is anything ever truly *well* known?\n"
request.setHeader(b"Content-Type", b"application/json")
return self._response
def well_known_resource(hs: "HomeServer") -> Resource:
"""Returns a Twisted web resource which handles '.well-known' requests"""
res = Resource()
matrix_resource = Resource()
res.putChild(b"matrix", matrix_resource)
matrix_resource.putChild(b"server", ServerWellKnownResource(hs))
matrix_resource.putChild(b"client", ClientWellKnownResource(hs))
return res