From 4f96ee402bc39ad6dbc6e5aeb2bf1539177b4724 Mon Sep 17 00:00:00 2001
From: rlaphoenix <rlaphoenix@pm.me>
Date: Mon, 1 Aug 2022 23:40:08 +0100
Subject: [PATCH] serve: Add check that all devices in config exist

---
 pywidevine/serve.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pywidevine/serve.py b/pywidevine/serve.py
index 53f324e..bf2bf65 100644
--- a/pywidevine/serve.py
+++ b/pywidevine/serve.py
@@ -29,6 +29,9 @@ async def _startup(app: web.Application):
         for x in app["config"]["devices"]
         for path in [Path(x)]
     }
+    for device in app["config"]["devices"].values():
+        if not device.is_file():
+            raise FileNotFoundError(f"Device file does not exist: {device}")
 
 
 async def _cleanup(app: web.Application):