Current File : //backups/router/usr/local/opnsense/scripts/interfaces/reconfigure_gres.php
#!/usr/local/bin/php
<?php
/*
* Copyright (C) 2024 Deciso B.V.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
require_once 'config.inc';
require_once 'interfaces.inc';
require_once 'util.inc';
require_once 'system.inc';
/* gather all relevant gre interfaces*/
$gres_todo = [];
$vfilename = '/tmp/.gre.todo';
if (file_exists($vfilename) && filesize($vfilename) > 0) {
$handle = fopen($vfilename, 'r+');
if (flock($handle, LOCK_EX)) {
fseek($handle, 0);
foreach (explode("\n", fread($handle, filesize($vfilename))) as $line) {
if (!isset($gres_todo[$line]) && trim($line) != '') {
$gres_todo[$line] = [];
}
}
fseek($handle, 0);
ftruncate($handle, 0);
flock($handle, LOCK_UN);
}
}
/* collect changed gres to reconfigure */
$gre_configure = [];
foreach ((new OPNsense\Interfaces\Gre())->gre->iterateItems() as $item) {
$gre = [];
foreach ($item->iterateItems() as $node) {
$gre[$node->getInternalXMLTagName()] = (string)$node;
}
if (isset($gres_todo[$gre['greif']])) {
$gre_configure[] = $gre;
unset($gres_todo[$gre['greif']]);
}
}
/* remove non existing interfaces */
foreach (array_keys($gres_todo) as $greif) {
legacy_interface_destroy($greif);
}
/*
reconfigure still existing gres,
removal should happen first as it may free parent interfaces.
*/
$ifdetails = legacy_interfaces_details();
foreach ($gre_configure as $gre) {
$reconfigure = false;
if (isset($ifdetails[$gre['greif']])) {
/* when reconfiguring, we need to remove addresses (at least for IPv6) to prevent old ones left behind */
$reconfigure = true;
interfaces_addresses_flush($gre['greif'], 4, $ifdetails);
interfaces_addresses_flush($gre['greif'], 6, $ifdetails);
}
_interfaces_gre_configure($gre);
if ($reconfigure) {
/* re-apply additional addresses and hook routing */
interfaces_restart_by_device(false, [$gre['greif']]);
}
}
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