Add Cloudron packaging for Maubot

maubot-src/maubot/management/api/middleware.py

@@ -0,0 +1,78 @@
+# maubot - A plugin-based Matrix bot system.
+# Copyright (C) 2022 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 typing import Awaitable, Callable
+import base64
+import logging
+
+from aiohttp import web
+
+from .auth import check_token
+from .base import get_config
+from .responses import resp
+
+Handler = Callable[[web.Request], Awaitable[web.Response]]
+log = logging.getLogger("maubot.server")
+
+
+@web.middleware
+async def auth(request: web.Request, handler: Handler) -> web.Response:
+    subpath = request.path[len("/_matrix/maubot/v1") :]
+    if (
+        subpath.startswith("/auth/")
+        or subpath.startswith("/client/auth_external_sso/complete/")
+        or subpath == "/features"
+        or subpath == "/logs"
+    ):
+        return await handler(request)
+    err = check_token(request)
+    if err is not None:
+        return err
+    return await handler(request)
+
+
+@web.middleware
+async def error(request: web.Request, handler: Handler) -> web.Response:
+    try:
+        return await handler(request)
+    except web.HTTPException as ex:
+        if ex.status_code == 404:
+            return resp.path_not_found
+        elif ex.status_code == 405:
+            return resp.method_not_allowed
+        return web.json_response(
+            {
+                "httpexception": {
+                    "headers": {key: value for key, value in ex.headers.items()},
+                    "class": type(ex).__name__,
+                    "body": ex.text or base64.b64encode(ex.body),
+                },
+                "error": f"Unhandled HTTP {ex.status}: {ex.text[:128] or 'non-text response'}",
+                "errcode": f"unhandled_http_{ex.status}",
+            },
+            status=ex.status,
+        )
+    except Exception:
+        log.exception("Error in handler")
+        return resp.internal_server_error
+
+
+req_no = 0
+
+
+def get_req_no():
+    global req_no
+    req_no += 1
+    return req_no