From 0760ea91211b59ba20ddb08a2372d851e11a409f Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Fri, 5 Jan 2024 17:05:34 +0100
Subject: check-lte-firmware-upgrade: fail on empty version string

---
 check-lte-firmware-upgrade.rsc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/check-lte-firmware-upgrade.rsc b/check-lte-firmware-upgrade.rsc
index f57f349..149c008 100644
--- a/check-lte-firmware-upgrade.rsc
+++ b/check-lte-firmware-upgrade.rsc
@@ -45,6 +45,11 @@ $ScriptLock $0;
     :return false;
   }
 
+  :if ([ :len ($Firmware->"latest") ] = 0) do={
+    $LogPrintExit2 info $0 ("An empty string is not a valid version.") false;
+    :return false;
+  }
+
   :if (($Firmware->"installed") = ($Firmware->"latest")) do={
     :if ([ $ScriptFromTerminal $0 ] = true) do={
       $LogPrintExit2 info $0 ("No firmware upgrade available for LTE interface " . $IntName . ".") false;
-- 
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