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#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
import logging
from http.client import TEMPORARY_REDIRECT
from typing import TYPE_CHECKING, Optional
from synapse.http.server import HttpServer, respond_with_redirect
from synapse.http.servlet import RestServlet
from synapse.http.site import SynapseRequest
from synapse.rest.client._base import client_patterns
if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
class RendezvousServlet(RestServlet):
"""
This is a placeholder implementation of [MSC3886](https://github.com/matrix-org/matrix-spec-proposals/pull/3886)
simple client rendezvous capability that is used by the "Sign in with QR" functionality.
This implementation only serves as a 307 redirect to a configured server rather than being a full implementation.
A module that implements the full functionality is available at: https://pypi.org/project/matrix-http-rendezvous-synapse/.
Request:
POST /rendezvous HTTP/1.1
Content-Type: ...
...
Response:
HTTP/1.1 307
Location: <configured endpoint>
"""
PATTERNS = client_patterns(
"/org.matrix.msc3886/rendezvous$", releases=[], v1=False, unstable=True
)
def __init__(self, hs: "HomeServer"):
super().__init__()
redirection_target: Optional[str] = hs.config.experimental.msc3886_endpoint
assert (
redirection_target is not None
), "Servlet is only registered if there is a redirection target"
self.endpoint = redirection_target.encode("utf-8")
async def on_POST(self, request: SynapseRequest) -> None:
respond_with_redirect(
request, self.endpoint, statusCode=TEMPORARY_REDIRECT, cors=True
)
# PUT, GET and DELETE are not implemented as they should be fulfilled by the redirect target.
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
if hs.config.experimental.msc3886_endpoint is not None:
RendezvousServlet(hs).register(http_server)
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