From e2d15795f53b933ead76871444a6ef0bddb0b762 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?To=CF=80?= <git@topi.wtf>
Date: Thu, 6 Jul 2023 02:00:37 +0200
Subject: [PATCH] check if user id is 0 when connecting to lavalink

---
 .../main/java/lavalink/server/io/HandshakeInterceptorImpl.kt   | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/LavalinkServer/src/main/java/lavalink/server/io/HandshakeInterceptorImpl.kt b/LavalinkServer/src/main/java/lavalink/server/io/HandshakeInterceptorImpl.kt
index db5711465..34a791516 100644
--- a/LavalinkServer/src/main/java/lavalink/server/io/HandshakeInterceptorImpl.kt
+++ b/LavalinkServer/src/main/java/lavalink/server/io/HandshakeInterceptorImpl.kt
@@ -36,7 +36,8 @@ constructor(private val serverConfig: ServerConfig, private val socketServer: So
             return false
         }
 
-        if (request.headers.getFirst("User-Id") == null) {
+        val userId = request.headers.getFirst("User-Id")
+        if (userId.isNullOrEmpty() || userId.toLongOrNull() == 0L) {
             log.error("Missing User-Id header from ${request.remoteAddress}")
             response.setStatusCode(HttpStatus.BAD_REQUEST)
             return false