changed to master and backup files

opnsense-carp-dhcp-backup.php

@@ -0,0 +1,52 @@
+#!/usr/local/bin/php
+<?php
+
+require_once("config.inc");
+require_once("interfaces.inc");
+require_once("util.inc");
+require_once("filter.inc");
+require_once("util.inc");
+require_once("system.inc");
+require_once('rrd.inc');
+require_once('plugins.inc.d/webgui.inc');
+
+#############
+# Variables #
+#############
+
+$wanInterface = 'wan';
+$gatewayName = 'WAN_GW';
+
+###################
+# Start of Script #
+###################
+
+
+function write_config_and_restart_services ($interface) {
+    write_config();
+    system_hosts_generate(true);
+    system_resolvconf_generate(true);
+    interface_bring_down($interface);
+    interface_configure(true, $interface, true);
+    plugins_configure('monitor', true);
+    filter_configure_sync(true);
+    webgui_configure_do(true);
+    rrd_configure(true);
+}
+
+# loop through carp addresses and update the wan ip address
+foreach ($config['virtualip']['vip'] as $i => $vip) {
+    if ($vip['interface'] == $wanInterface) {
+        $description = $config['virtualip']['vip'][$i]['descr'];
+        # VIP WAN (GW: $gatewayIP)
+        $gatewayIP = substr(explode(":", $description), 0, -1)
+        if (filter_var($gatewayIP, FILTER_VALIDATE_IP)) {
+            foreach ($config['gateways']['gateway_item'] as $i => $gateway) {
+                if ($gateway['name'] == $gatewayName) {
+                    $config['gateways']['gateway_item'][$i]['gateway'] = $gatewayIP;
+                    write_config_and_restart_services($wanInterface);
+                }
+            }
+        }
+    }
+}