mambax7 / xooghost

backend.php

<?php
/*
 You may not change or alter any portion of this comment or credits
 of supporting developers from this source code or any supporting source code
 which is considered copyrighted (c) material of the original comment or credit authors.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/

/**
 * XOOPS feed creator
 *
 * @copyright       XOOPS Project (https://xoops.org)
 * @license         GNU GPL 2 (http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
 * @package         core
 * @since           2.6.0
 * @author          Laurent JEN (aka DuGris)
 */
if (file_exists('mainfile.php')) {
    include __DIR__ . '/mainfile.php';
} else {
    require dirname(dirname(__DIR__)) . '/' . '/mainfile.php';
}

$xoops = \Xoops::getInstance();
$xoops->disableErrorReporting();

if (function_exists('mb_http_output')) {
    mb_http_output('pass');
}
header('Content-Type:text/xml; charset=utf-8');

$dirname = $xoops->isModule() ? $xoops->module->getVar('dirname') : 'system';

The method getVar() does not exist on null.

$tpl = new \XoopsTpl();
$tpl->caching = 2;
$tpl->cache_lifetime = 3600;
if (!$tpl->is_cached('module:' . $dirname . '/system_rss.tpl')) {
    $tpl->assign('channel_title', (htmlspecialchars($xoops->getConfig('sitename'), ENT_QUOTES)));
    $tpl->assign('channel_link', \XoopsBaseConfig::get('url') . '/');
    $tpl->assign('channel_desc', (htmlspecialchars($xoops->getConfig('slogan'), ENT_QUOTES)));
    $tpl->assign('channel_lastbuild', \XoopsLocale::formatTimestamp(time(), 'rss'));
    $tpl->assign('channel_webmaster', $xoops->checkEmail($xoops->getConfig('adminmail'), true));
    $tpl->assign('channel_editor', $xoops->checkEmail($xoops->getConfig('adminmail'), true));
    $tpl->assign('channel_category', 'News');
    $tpl->assign('channel_generator', 'XOOPS');
    $tpl->assign('channel_language', _LANGCODE);

    $xoTheme = $xoops->theme();
    $imgPath = $xoTheme->resourcePath('/img/logo.png');
    $tpl->assign('image_url', $xoops->url($imgPath));
    $dimension = getimagesize($xoops->path($imgPath));
    $tpl->assign('image_width', $dimension[0]);
    $tpl->assign('image_height', $dimension[1]);

    $items = [];

    if ($xoops->isModule()) {
        /* @var SystemPluginInterface $plugin */
        $plugin = \Xoops\Module\Plugin::getPlugin($dirname, 'system');

It seems like $dirname can also be of type string[]; however, parameter $dirname of Xoops\Module\Plugin::getPlugin() does only seem to accept string, maybe add an additional type check?

        $res = $plugin->backend(10);
        if (is_array($res) && count($res) > 0) {
            foreach ($res as $item) {
                $date[] = ['date' => $item['date']];
                $items[] = [
                    'date' => \XoopsLocale::formatTimestamp($item['date'], 'rss'),
                    'title' => (htmlspecialchars($item['title'])),
                    'content' => (htmlspecialchars($item['content'])),
                    'link' => $item['link'],
                    'guid' => $item['link'],
                ];
            }
        }
    } else {
        $plugins = \Xoops\Module\Plugin::getPlugins('system');
        /* @var SystemPluginInterface $plugin */
        foreach ($plugins as $plugin) {
            $res = $plugin->backend(10);
            if (is_array($res) && count($res) > 0) {
                foreach ($res as $item) {
                    $date[] = ['date' => $item['date']];
                    $items[] = [
                        'date' => \XoopsLocale::formatTimestamp($item['date'], 'rss'),
                        'title' => (htmlspecialchars($item['title'])),
                        'content' => (htmlspecialchars($item['content'])),
                        'link' => $item['link'],
                        'guid' => $item['link'],
                    ];
                }
            }
        }
    }
    array_multisort($date, SORT_DESC, $items);
    $tpl->assign('items', $items);
}
$tpl->display('module:' . $dirname . '/system_rss.tpl');