Ticket #49959: 49959.patch

src/wp-includes/load.php

@@ -172 +172 @@
 /**
  * Die with a maintenance message when conditions are met.
  *
- * Checks for a file in the WordPress root directory named ".maintenance".
- * This file will contain the variable $upgrading, set to the time the file
- * was created. If the file was created less than 10 minutes ago, WordPress
- * enters maintenance mode and displays a message.
- *
  * The default message can be replaced by using a drop-in (maintenance.php in
  * the wp-content directory).
  *
@@ -186 +181 @@
  * @global int $upgrading the unix timestamp marking when upgrading WordPress began.
  */
 function wp_maintenance() {
-        if ( ! file_exists( ABSPATH . '.maintenance' ) || wp_installing() ) {
-                return;
-        }
-
-        global $upgrading;
-
-        require ABSPATH . '.maintenance';
-        // If the $upgrading timestamp is older than 10 minutes, don't die.
-        if ( ( time() - $upgrading ) >= 600 ) {
-                return;
-        }
-
-        /**
-         * Filters whether to enable maintenance mode.
-         *
-         * This filter runs before it can be used by plugins. It is designed for
-         * non-web runtimes. If this filter returns true, maintenance mode will be
-         * active and the request will end. If false, the request will be allowed to
-         * continue processing even if maintenance mode should be active.
-         *
-         * @since 4.6.0
-         *
-         * @param bool $enable_checks Whether to enable maintenance mode. Default true.
-         * @param int  $upgrading     The timestamp set in the .maintenance file.
-         */
-        if ( ! apply_filters( 'enable_maintenance_mode', true, $upgrading ) ) {
+        // Return if maintenance mode is disabled.
+        if ( ! wp_in_maintenance_mode() ) {
                 return;
         }
 
@@ -275 +246 @@
         return $r;
 }
 
+/**
+ * Check if maintenance mode is enabled.
+ *
+ * Checks for a file in the WordPress root directory named ".maintenance".
+ * This file will contain the variable $upgrading, set to the time the file
+ * was created. If the file was created less than 10 minutes ago, WordPress
+ * is in maintenance mode.
+ *
+ * @since 5.5.0
+ *
+ * @return bool
+ */
+function wp_in_maintenance_mode() {
+        if ( ! file_exists( ABSPATH . '.maintenance' ) || wp_installing() ) {
+                return false;
+        }
+
+        global $upgrading;
+
+        require ABSPATH . '.maintenance';
+        // If the $upgrading timestamp is older than 10 minutes, consider maintenance over.
+        if ( ( time() - $upgrading ) >= 600 ) {
+                return false;
+        }
+
+        /**
+         * Filters whether to enable maintenance mode.
+         *
+         * This filter runs before it can be used by plugins. It is designed for
+         * non-web runtimes. If this filter returns true, maintenance mode will be
+         * active and the request will end. If false, the request will be allowed to
+         * continue processing even if maintenance mode should be active.
+         *
+         * @since 4.6.0
+         *
+         * @param bool $enable_checks Whether to enable maintenance mode. Default true.
+         * @param int  $upgrading     The timestamp set in the .maintenance file.
+         */
+        if ( ! apply_filters( 'enable_maintenance_mode', true, $upgrading ) ) {
+                return false;
+        }
+
+        return true;
+}
+
 /**
  * Set PHP error reporting based on WordPress debug settings.
  *