From 01a04a11275f021c6aeffc600030bf5234350e7e Mon Sep 17 00:00:00 2001
From: David Yoder <dyoder@emberkom.com>
Date: Wed, 23 Aug 2023 15:01:36 -0400
Subject: [PATCH] added check for Get-GUIDFromMSIUninstallString

---
 Tools.ps1 | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Tools.ps1 b/Tools.ps1
index f5e160a..a1d2e29 100644
--- a/Tools.ps1
+++ b/Tools.ps1
@@ -798,7 +798,9 @@ Function Get-AbsoluteURI {
 Function Get-GUIDFromMSIUninstallString ([string]$str) {
     $start = $str.IndexOf('{') + 1
     $end = $str.IndexOf('}')
-    Return $str.Substring($start, $end - $start)
+    $retval = $str.Substring($start, $end - $start)
+    If ( $retval.Length -ne 36 ) { $retval = $null }
+    Return $retval
 }
 
 Function Uninstall-MSI ([Parameter(ValueFromPipeline=$true)][string[]]$APP_NAMES) {