From 7612aa7d8680cbf173a40c7414e7e6b4ded9cea6 Mon Sep 17 00:00:00 2001
From: Tony Murray <murraytony@gmail.com>
Date: Wed, 2 Nov 2022 12:32:36 -0500
Subject: [PATCH] Support regex in os field replace (#14563)

* Support regex in os field replace

* Support regex in os field replace
---
 LibreNMS/OS/Traits/YamlOSDiscovery.php | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/LibreNMS/OS/Traits/YamlOSDiscovery.php b/LibreNMS/OS/Traits/YamlOSDiscovery.php
index 843413588e..436c2dbc59 100644
--- a/LibreNMS/OS/Traits/YamlOSDiscovery.php
+++ b/LibreNMS/OS/Traits/YamlOSDiscovery.php
@@ -165,10 +165,20 @@ trait YamlOSDiscovery
     {
         foreach ($this->osFields as $field) {
             foreach ($os_yaml["{$field}_replace"] ?? [] as $replacements) {
+                $search = $replacements;
+                $replacement = '';
+
+                // check for a given replacement string (otherwise, remove)
                 if (is_array($replacements) && count($replacements) == 2) {
-                    $device->$field = str_replace($replacements[0], $replacements[1], $device->$field);
-                } elseif (is_string($replacements)) {
-                    $device->$field = str_replace($replacements, '', $device->$field);
+                    $search = $replacements[0];
+                    $replacement = $replacements[1];
+                }
+
+                // check for regex
+                if (preg_match($search, $device->$field)) {
+                    $device->$field = preg_replace($search, $replacement, $device->$field);
+                } else {
+                    $device->$field = str_replace($search, $replacement, $device->$field);
                 }
             }
         }