(legacy) add is_apinger_enabled function

src/etc/inc/gwlb.inc

@@ -1069,4 +1069,24 @@ function gateway_is_gwgroup_member($name) {
 
 	return $members;
 }
+
+/**
+ * check if apinger service is enabled
+ */
+function is_apinger_enabled() {
+	global $config;
+	$gwcount=0;
+	foreach($config['gateways']['gateway_item'] as $gwkey => $gateway) {
+		if (!isset($gateway['monitor_disable']) || $gateway['monitor_disable'] == "0") {
+			$gwcount += 1;
+		}
+	}
+
+	if ($gwcount == 0) {
+		return false;
+	} else {
+		return true;
+	}
+}
+
 ?>