From 918eb6de41844fbb3f8fd6aca33807da3502d83e Mon Sep 17 00:00:00 2001
From: Brian White <mscdex@mscdex.net>
Date: Fri, 27 Aug 2021 11:53:13 -0400
Subject: [PATCH] Protocol: add type check

Fixes: https://github.com/mscdex/ssh2/issues/1059
---
 lib/protocol/Protocol.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/protocol/Protocol.js b/lib/protocol/Protocol.js
index 7d4573f0..e00f1eb5 100644
--- a/lib/protocol/Protocol.js
+++ b/lib/protocol/Protocol.js
@@ -1669,6 +1669,9 @@ class Protocol {
 
     const origSignal = name;
 
+    if (typeof origSignal !== 'string' || !origSignal)
+      throw new Error(`Invalid signal: ${origSignal}`);
+
     let signal = name.toUpperCase();
     if (signal.slice(0, 3) === 'SIG')
       signal = signal.slice(3);