maubot/maubot/management/api/client_proxy.py

54 lines
2.1 KiB
Python

# maubot - A plugin-based Matrix bot system.
# Copyright (C) 2018 Tulir Asokan
#
# 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.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
from aiohttp import web, client as http
from ...client import Client
from .base import routes
from .responses import resp
PROXY_CHUNK_SIZE = 32 * 1024
@routes.view("/proxy/{id}/{path:_matrix/.+}")
async def proxy(request: web.Request) -> web.StreamResponse:
user_id = request.match_info.get("id", None)
client = Client.get(user_id, None)
if not client:
return resp.client_not_found
path = request.match_info.get("path", None)
query = request.query.copy()
try:
del query["access_token"]
except KeyError:
pass
headers = request.headers.copy()
headers["Authorization"] = f"Bearer {client.access_token}"
if "X-Forwarded-For" not in headers:
peer = request.transport.get_extra_info("peername")
if peer is not None:
host, port = peer
headers["X-Forwarded-For"] = f"{host}:{port}"
data = await request.read()
async with http.request(request.method, f"{client.homeserver}/{path}", headers=headers,
params=query, data=data) as proxy_resp:
response = web.StreamResponse(status=proxy_resp.status, headers=proxy_resp.headers)
await response.prepare(request)
async for chunk in proxy_resp.content.iter_chunked(PROXY_CHUNK_SIZE):
await response.write(chunk)
await response.write_eof()
return response