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📄 Viewing: akeeba-backup-coreupdate.php

<?php
/**
 * @package    akeebabackupwp
 * @copyright  Copyright (c)2014-2019 Nicholas K. Dionysopoulos / Akeeba Ltd
 * @license    GNU GPL version 3 or later
 */

$plugin_dir  = get_option('akeebabackupwp_plugin_dir', 'akeebabackupwp');
$plugin_path = WP_PLUGIN_DIR . '/' . $plugin_dir;

// Let's double check that the file is at the same version of the component
define('AKEEBABACKUP_MUPLUGIN_COREUPDATE_VERSION', 'rev5056A7CC');

if (!defined('AKEEBABACKUP_VERSION'))
{
	// No version file? Be safe and stop here
	if (!file_exists($plugin_path.'/app/version.php'))
	{
		return;
	}

	require_once $plugin_path.'/app/version.php';
}

// This should never happen, but let's be safe than sorry
if (!defined('AKEEBABACKUP_VERSION'))
{
	return;
}

if (! version_compare(AKEEBABACKUP_MUPLUGIN_COREUPDATE_VERSION, AKEEBABACKUP_VERSION, 'eq'))
{
	// Two different versions? Abort! Abort!
	return;
}

// This should never happen, but maybe our code could be triggered by some kind of CLI scripts, so better be safe than sorry
if (!isset($_SERVER['REQUEST_URI']))
{
	return;
}

$current_url = $_SERVER['REQUEST_URI'];

// Check we're on the correct page
if (stripos($current_url, 'wp-admin/update-core.php') === false)
{
	return;
}

// Missing action or not the action we're looking for
if (!isset($_REQUEST['action']) || !in_array($_REQUEST['action'], ['do-core-upgrade', 'do-core-reinstall']))
{
	return;
}

// Avoid endless loops
if (isset($_REQUEST['akeeba_autoupdate_ignore']))
{
	return;
}

if (!class_exists('AkeebaBackupWP'))
{
	require_once WP_PLUGIN_DIR.'/'.$plugin_dir.'/helpers/AkeebaBackupWP.php';
}

$backup_profile = AkeebaBackupWP::getProfileManualCoreUpdate();

// No backup profile means the feature is disabled
if (!$backup_profile)
{
	return;
}

if (!function_exists('find_core_update'))
{
	require_once ABSPATH . 'wp-admin/includes/update.php';
}

// Do we really have an update to perform?
$version = isset( $_POST['version'] )? $_POST['version'] : false;
$locale  = isset( $_POST['locale'] )? $_POST['locale'] : 'en_US';
$update  = find_core_update( $version, $locale );

if ( !$update )
{
	return;
}

$return_url  = admin_url().'update-core.php?action='.$_REQUEST['action'].'&akeeba_autoupdate_ignore=1';

$return_form = [
	'_wpnonce' => $_POST['_wpnonce'],
	'_wp_http_referer' => $_POST['_wp_http_referer'],
	'upgrade' => 1,
	'version' => $version,
	'locale' => $locale
];

$backup_url  = admin_url().'admin.php?page='.$plugin_dir.'/akeebabackupwp.php&view=backup&autostart=1&backuponupdate=1';
$backup_url .= '&profile='.$backup_profile;

// Let's use already generated nonce, and tell AWF which action we used to generate it
$backup_url .= '&_wpnonce='.$_POST['_wpnonce'];
$backup_url .= '&_wpaction=upgrade-core';

$backup_url .= '&returnurl='.urlencode($return_url);
$backup_url .= '&returnform='.base64_encode(json_encode($return_form));

if (!headers_sent())
{
	header("Location: $backup_url", true, 302);
}

// Let's add a fallback for redirections, in case headers were already sent
echo '<script type="text/javascript">window.location = "'.$backup_url.'";	</script>'."\n";
echo 'If you are not redirected in 10 seconds, please click <a href="'.$backup_url.'">here</a> to take a backup before updating WordPress.';

die();
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