From 4a52a71956a8d46fcb7294ac71734504bb09bcc2 Mon Sep 17 00:00:00 2001
From: S. Solomon Darnell
Date: Fri, 28 Mar 2025 21:52:21 -0500
Subject: two version of R2R are here

---
 .../starlette/middleware/authentication.py         | 52 ++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 .venv/lib/python3.12/site-packages/starlette/middleware/authentication.py

(limited to '.venv/lib/python3.12/site-packages/starlette/middleware/authentication.py')

diff --git a/.venv/lib/python3.12/site-packages/starlette/middleware/authentication.py b/.venv/lib/python3.12/site-packages/starlette/middleware/authentication.py
new file mode 100644
index 00000000..8555ee07
--- /dev/null
+++ b/.venv/lib/python3.12/site-packages/starlette/middleware/authentication.py
@@ -0,0 +1,52 @@
+from __future__ import annotations
+
+import typing
+
+from starlette.authentication import (
+    AuthCredentials,
+    AuthenticationBackend,
+    AuthenticationError,
+    UnauthenticatedUser,
+)
+from starlette.requests import HTTPConnection
+from starlette.responses import PlainTextResponse, Response
+from starlette.types import ASGIApp, Receive, Scope, Send
+
+
+class AuthenticationMiddleware:
+    def __init__(
+        self,
+        app: ASGIApp,
+        backend: AuthenticationBackend,
+        on_error: typing.Callable[[HTTPConnection, AuthenticationError], Response] | None = None,
+    ) -> None:
+        self.app = app
+        self.backend = backend
+        self.on_error: typing.Callable[[HTTPConnection, AuthenticationError], Response] = (
+            on_error if on_error is not None else self.default_on_error
+        )
+
+    async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
+        if scope["type"] not in ["http", "websocket"]:
+            await self.app(scope, receive, send)
+            return
+
+        conn = HTTPConnection(scope)
+        try:
+            auth_result = await self.backend.authenticate(conn)
+        except AuthenticationError as exc:
+            response = self.on_error(conn, exc)
+            if scope["type"] == "websocket":
+                await send({"type": "websocket.close", "code": 1000})
+            else:
+                await response(scope, receive, send)
+            return
+
+        if auth_result is None:
+            auth_result = AuthCredentials(), UnauthenticatedUser()
+        scope["auth"], scope["user"] = auth_result
+        await self.app(scope, receive, send)
+
+    @staticmethod
+    def default_on_error(conn: HTTPConnection, exc: Exception) -> Response:
+        return PlainTextResponse(str(exc), status_code=400)
-- 
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