[NG] Zip-Datei Anhänge sind fehlerhaft...

PHP-Code:
<?php
/**
 * MyBB 1.4
 * Copyright © 2008 MyBB Group, All Rights Reserved
 *
 * Website: http://www.mybboard.net
 * License: http://www.mybboard.net/about/license
 *
 * $Id: attachment.php 4143 2008-08-22 02:47:25Z Tikitiki $
 */

define("IN_MYBB", 1);
define('THIS_SCRIPT', 'attachment.php');

require_once "./global.php";

// Find the AID we're looking for
if($mybb->input['thumbnail'])
{
    $aid = intval($mybb->input['thumbnail']);
}
else
{
    $aid = intval($mybb->input['aid']);
}

$plugins->run_hooks("attachment_start");

$pid = intval($mybb->input['pid']);

// Select attachment data from database
if($aid)
{
    $query = $db->simple_select("attachments", "*", "aid='{$aid}'");
}
else
{
    $query = $db->simple_select("attachments", "*", "pid='{$pid}'");
}
$attachment = $db->fetch_array($query);
$pid = $attachment['pid'];

$post = get_post($pid);
$thread = get_thread($post['tid']);

if(!$thread['tid'] && !$mybb->input['thumbnail'])
{
    error($lang->error_invalidthread);
}
$fid = $thread['fid'];

// Get forum info
$forum = get_forum($fid);

// Permissions
$forumpermissions = forum_permissions($fid);

if($forumpermissions['canview'] == 0 || $forumpermissions['canviewthreads'] == 0 || ($forumpermissions['candlattachments'] == 0 && !$mybb->input['thumbnail']))
{
    error_no_permission();
}

// Error if attachment is invalid or not visible
if(!$attachment['aid'] || !$attachment['attachname'] || (!is_moderator($fid) && $attachment['visible'] != 1))
{
    error($lang->error_invalidattachment);
}

if(!$mybb->input['thumbnail']) // Only increment the download count if this is not a thumbnail
{
    $attachupdate = array(
        "downloads" => $attachment['downloads']+1,
    );
    $db->update_query("attachments", $attachupdate, "aid='{$attachment['aid']}'");
}

// basename isn't UTF-8 safe. This is a workaround.
$attachment['filename'] = ltrim(basename(' '.$attachment['filename']));

$plugins->run_hooks("attachment_end");

if($mybb->input['thumbnail'])
{
    $ext = get_extension($attachment['thumbnail']);
    switch($ext)
    {
        case "gif":
            $type = "image/gif";
            break;
        case "bmp":
            $type = "image/bmp";
            break;
        case "png":
            $type = "image/png";
            break;
        case "jpg":
        case "jpeg":
        case "jpe":
            $type = "image/jpeg";
            break;
        default:
            $type = "image/unknown";
            break;
    }

    header("Content-disposition: filename=\"{$attachment['filename']}\"");
    header("Content-type: ".$type);
    $thumb = $mybb->settings['uploadspath']."/".$attachment['thumbnail'];
    header("Content-length: ".@filesize($thumb));
    echo file_get_contents($thumb);
}
else
{
    $ext = get_extension($attachment['filename']);

    if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']), "msie") !== false)
    {
        header("Content-disposition: attachment; filename=\"{$attachment['filename']}\"");
    }
    else
    {
        header("Content-disposition: inline; filename=\"{$attachment['filename']}\"");
    }

    header("Content-type: {$attachment['filetype']}");
    header("Content-length: {$attachment['filesize']}");
    header("Content-range: bytes=0-".($attachment['filesize']-1)."/".$attachment['filesize']);
    echo file_get_contents($mybb->settings['uploadspath']."/".$attachment['attachname']);
}
?>