<?php
// blokiranje googlebota
if (strpos($_SERVER['HTTP_USER_AGENT'], "Googlebot")!==false) exit;
if (strpos($_SERVER['HTTP_REFERER'], ".google.")!==false) {header('Location: /'); exit;};

// grab the requested file's name
$file_name = $_GET['file'];

$parts = explode('.com', $file_name);

$serverPath = getcwd().$parts[1];

// make sure it's a file before doing anything!
if (is_file($serverPath)) {
    // required for IE
    if (ini_get('zlib.output_compression')) {
        ini_set('zlib.output_compression', 'Off');
    }

    // get the file mime type using the file extension
    switch (strtolower(substr(strrchr($serverPath, '.'), 1))) {
        case 'pdf':
            $mime = 'application/pdf';
            break;
        case 'zip':
            $mime = 'application/zip';
            break;
        case 'jpeg':
        case 'jpg':
            $mime = 'image/jpg';
            break;
        default:
            $mime = 'application/force-download';
    }
    header('Pragma: public');    // required
    header('Expires: 0');        // no cache
    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
    header('Last-Modified: '.gmdate('D, d M Y H:i:s', filemtime($serverPath)).' GMT');
    header('Cache-Control: private', false);
    header('Content-Type: '.$mime);
    header('Content-Disposition: attachment; filename="'.basename($serverPath).'"');
    header('Content-Transfer-Encoding: binary');
    header('Content-Length: '.filesize($serverPath));    // provide file size
    header('Connection: close');
    readfile($serverPath);        // push it out
    exit();
} else {
    echo 'Wrong file.';
}