From bd050d27c445a597800fed508a4f11784b1254d0 Mon Sep 17 00:00:00 2001
From: Maingron <r@maingron.com>
Date: Sat, 13 Sep 2025 02:11:39 +0200
Subject: [PATCH] Add possible regex handling

---
 plugin.php | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/plugin.php b/plugin.php
index b557ce7..8d6366d 100644
--- a/plugin.php
+++ b/plugin.php
@@ -45,10 +45,17 @@ function better_blacklist_domain_check( $shunt, $url ) {
         $blacklisted_domains = unserialize( $blacklisted_domains );
 
         foreach ( $blacklisted_domains as $blacklisted_domain ) {
-            // Use a regex to match the domain or subdomain
-            $pattern = '/(?:^|\.)' . preg_quote( $blacklisted_domain, '/' ) . '$/i';
-            if ( preg_match( $pattern, $domain ) ) {
-                return blacklist_fail_response();
+            // Check if the entry starts with '/', then consider regex handling
+            if (strpos($blacklisted_domain, '/') === 0) {
+                if (@preg_match($blacklisted_domain, $domain)) {
+                    return blacklist_fail_response();
+                }
+            } else {
+                // Otherwise treat as plain domain (old behavior)
+                $pattern = '/(?:^|\.)' . preg_quote( $blacklisted_domain, '/' ) . '$/i';
+                if ( preg_match( $pattern, $domain ) ) {
+                    return blacklist_fail_response();
+                }
             }
         }
     }
@@ -126,4 +133,4 @@ function better_blacklist_process_form() {
         }
         echo "</ul>";
     }
-}
\ No newline at end of file
+}