From 174ff9289b4936abd48a3da35705a42bfe907bdf Mon Sep 17 00:00:00 2001
From: Simon Ruderich <simon@ruderich.org>
Date: Mon, 9 Sep 2024 08:30:15 +0200
Subject: [PATCH] Checkerlib: raise exception on oversized flagids

Otherwise using a longer flagid raises a psycopg2 exception which gets
treated as communication error. This terminates the checker script
without making this visible to the service author.
---
 src/ctf_gameserver/checkerlib/lib.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/ctf_gameserver/checkerlib/lib.py b/src/ctf_gameserver/checkerlib/lib.py
index b66b7f8..d160a2f 100644
--- a/src/ctf_gameserver/checkerlib/lib.py
+++ b/src/ctf_gameserver/checkerlib/lib.py
@@ -145,6 +145,8 @@ def set_flagid(data: str) -> None:
 
     if not isinstance(data, str):
         raise TypeError('data must be of type str')
+    if len(data) > 200:
+        raise AttributeError('data must not be longer than 200 bytes')
 
     if not _launched_without_runner():
         _send_ctrl_message({'action': 'FLAGID', 'param': data})