<?php
/*======================================================================*\
|| #################################################################### ||
|| # vBulletin 4.0.5
|| # ---------------------------------------------------------------- # ||
|| # Copyright ©2000-2010 vBulletin Solutions Inc. All Rights Reserved. ||
|| # This file may not be redistributed in whole or significant part. # ||
|| # ---------------- VBULLETIN IS NOT FREE SOFTWARE ---------------- # ||
|| # http://www.vbulletin.com | http://www.vbulletin.com/license.html # ||
|| #################################################################### ||
\*======================================================================*/
// ######################## SET PHP ENVIRONMENT ###########################
error_reporting(E_ALL & ~E_NOTICE);
@ini_set('zlib.output_compression', 'Off');
@set_time_limit(0);
if (@ini_get('output_handler') == 'ob_gzhandler' AND @ob_get_length() !== false)
{ // if output_handler = ob_gzhandler, turn it off and remove the header sent by PHP
@ob_end_clean();
header('Content-Encoding:');
}
// ##################### DEFINE IMPORTANT CONSTANTS #######################
define('THIS_SCRIPT', 'attachment');
define('CSRF_PROTECTION', true);
define('NOHEADER', 1);
define('NOZIP', 1);
define('NOCOOKIES', 1);
define('NOPMPOPUP', 1);
define('NONOTICES', 1);
// attachment.php/$attachmentid/file.mp3 -- for podcast and confused clients that determine file type in <enclosure> by the url extension <iTunes, I'm looking in your direction>
if (!$_REQUEST['attachmentid'])
{
$url_info = $_SERVER['REQUEST_URI'] ? $_SERVER['REQUEST_URI'] : $_SERVER['PHP_SELF'];
if ($url_info != '')
{
preg_match('#attachment\.php/(\d+)/#si', $url_info, $matches);
$_REQUEST['attachmentid'] = intval($matches[1]);
}
}
if (empty($_REQUEST['attachmentid']))
{
// return not found header
$sapi_name = php_sapi_name();
if ($sapi_name == 'cgi' OR $sapi_name == 'cgi-fcgi')
{
header('Status: 404 Not Found');
}
else
{
header('HTTP/1.1 404 Not Found');
}
exit;
}
if ($_REQUEST['stc'] == 1) // we were called as <img src=> from showthread.php
{
define('NOSHUTDOWNFUNC', 1);
}
// Immediately send back the 304 Not Modified header if this image is cached, don't load global.php
// 3.5.x allows overwriting of attachments so we add the dateline to attachment links to avoid caching
if (!isset($_SERVER['HTTP_RANGE']) AND (!empty($_SERVER['HTTP_IF_MODIFIED_SINCE']) OR !empty($_SERVER['HTTP_IF_NONE_MATCH'])))
{
$sapi_name = php_sapi_name();
if ($sapi_name == 'cgi' OR $sapi_name == 'cgi-fcgi')
{
header('Status: 304 Not Modified');
}
else
{
header('HTTP/1.1 304 Not Modified');
}
// remove the content-type and X-Powered headers to emulate a 304 Not Modified response as close as possible
header('Content-Type:');
header('X-Powered-By:');
if (!empty($_REQUEST['attachmentid']))
{
header('ETag: "' . intval($_REQUEST['attachmentid']) . '"');
}
exit;
}
// if $_POST['ajax'] is set, we need to set a $_REQUEST['do'] so we can precache the lightbox template
if (!empty($_POST['ajax']) AND isset($_POST['uniqueid']))
{
$_REQUEST['do'] = 'lightbox';
}
// #################### PRE-CACHE TEMPLATES AND DATA ######################
// get special phrase groups
$phrasegroups = array();
// get special data templates from the datastore
$specialtemplates = array();
// pre-cache templates used by all actions
$globaltemplates = array();
// pre-cache templates used by specific actions
$actiontemplates = array('lightbox' => array('lightbox'));
/*
The following headers are usually handled internally but we do our own thing
with attachments, the cache-control is to stop caches keeping private attachments
and the Vary header is to deal with the fact the filename encoding changes.
*/
header('Cache-Control: private');
header('Vary: User-Agent');
// ########################## REQUIRE BACK-END ############################
require_once('./global.php');
require_once(DIR . '/packages/vbattach/attach.php');
// ########################################################################
// ######################### START MAIN SCRIPT ############################
// ########################################################################
$vbulletin->input->clean_array_gpc('r', array(
'attachmentid' => TYPE_UINT,
'thumb' => TYPE_BOOL,
'cid' => TYPE_UINT,
));
$vbulletin->input->clean_array_gpc('p', array(
'ajax' => TYPE_BOOL,
'uniqueid' => TYPE_UINT
));
if (!($attach =& vB_Attachment_Display_Single_Library::fetch_library($vbulletin, $vbulletin->GPC['cid'], $vbulletin->GPC['thumb'], $vbulletin->GPC['attachmentid'])))
{
eval(standard_error(fetch_error('invalidid', $vbphrase['attachment'], $vbulletin->options['contactuslink'])));
}
$result = $attach->verify_attachment();
if ($result === false)
{
eval(standard_error(fetch_error('invalidid', $vbphrase['attachment'], $vbulletin->options['contactuslink'])));
}
else if ($result === 0)
{
header('Content-type: image/gif');
readfile(DIR . '/' . $vbulletin->options['cleargifurl']);
exit;
}
else if ($result === -1)
{
print_no_permission();
}
$attachmentinfo = $attach->fetch_attachmentinfo();
// this convoluted mess sets the $threadinfo/$foruminfo arrays for the session.inthread and session.inforum values
if ($browsinginfo = $attach->fetch_browsinginfo())
{
foreach ($browsinginfo AS $arrayname => $values)
{
$$arrayname = array();
foreach ($values AS $index => $value)
{
$$arrayname[$$index] = $value;
}
}
}
// handle lightbox requests
if ($_REQUEST['do'] == 'lightbox')
{
$vbulletin->input->clean_array_gpc('r', array(
'width' => TYPE_UINT,
'height' => TYPE_UINT,
'first' => TYPE_BOOL,
'last' => TYPE_BOOL,
'current' => TYPE_UINT,
'total' => TYPE_UINT
));
$width = $vbulletin->GPC['width'];
$height = $vbulletin->GPC['height'];
$first = $vbulletin->GPC['first'];
$last = $vbulletin->GPC['last'];
$current = $vbulletin->GPC['current'];
$total = $vbulletin->GPC['total'];
require_once(DIR . '/includes/class_xml.php');
$xml = new vB_AJAX_XML_Builder($vbulletin, 'text/xml');
if (in_array(strtolower($attachmentinfo['extension']), array('jpg', 'jpeg', 'jpe', 'gif', 'png', 'bmp')))
{
$uniqueid = $vbulletin->GPC['uniqueid'];
$imagelink = 'attachment.php?' . $vbulletin->session->vars['sessionurl'] . 'attachmentid=' . $attachmentinfo['attachmentid'] . '&d=' . $attachmentinfo['dateline'];
$attachmentinfo['date_string'] = vbdate($vbulletin->options['dateformat'], $attachmentinfo['dateline']);
$attachmentinfo['time_string'] = vbdate($vbulletin->options['timeformat'], $attachmentinfo['dateline']);
$show['newwindow'] = ($attachmentinfo['newwindow'] ? true : false);
($hook = vBulletinHook::fetch_hook('attachment_lightbox')) ? eval($hook) : false;
$templater = vB_Template::create('lightbox');
$templater->register('attachmentinfo', $attachmentinfo);
$templater->register('current', $current);
$templater->register('first', $first);
$templater->register('height', $height);
$templater->register('imagelink', $imagelink);
$templater->register('last', $last);
$templater->register('total', $total);
$templater->register('uniqueid', $uniqueid);
$templater->register('width', $width);
$html = $templater->render(true);
$xml->add_group('img');
$xml->add_tag('html', process_replacement_vars($html));
$xml->add_tag('link', $imagelink);
$xml->add_tag('name', $attachmentinfo['filename']);
$xml->add_tag('date', $attachmentinfo['date_string']);
$xml->add_tag('time', $attachmentinfo['time_string']);
$xml->close_group();
}
else
{
$xml->add_group('errormessage');
$xml->add_tag('error', 'notimage');
$xml->add_tag('extension', $attachmentinfo['extension']);
$xml->close_group();
}
$xml->print_xml();
}
if ($attachmentinfo['extension'])
{
$extension = strtolower($attachmentinfo['extension']);
}
else
{
$extension = strtolower(file_extension($attachmentinfo['filename']));
}
if ($vbulletin->options['attachfile'])
{
require_once(DIR . '/includes/functions_file.php');
if ($vbulletin->GPC['thumb'])
{
$attachpath = fetch_attachment_path($attachmentinfo['uploader'], $attachmentinfo['filedataid'], true);
}
else
{
$attachpath = fetch_attachment_path($attachmentinfo['uploader'], $attachmentinfo['filedataid']);
}
if ($permissions['adminpermissions'] & $vbulletin->bf_ugp_adminpermissions['cancontrolpanel'])
{
if (!($fp = fopen($attachpath, 'rb')))
{
exit;
}
}
else if (!($fp = @fopen($attachpath, 'rb')))
{
$filedata = base64_decode('R0lGODlhAQABAIAAAMDAwAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==');
$filesize = strlen($filedata);
header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT'); // always modified
header('Cache-Control: no-cache, must-revalidate'); // HTTP/1.1
header('Pragma: no-cache'); // HTTP/1.0
header("Content-disposition: inline; filename=clear.gif");
header('Content-transfer-encoding: binary');
header("Content-Length: $filesize");
header('Content-type: image/gif');
echo $filedata;
exit;
}
}
$startbyte = 0;
$lastbyte = $attachmentinfo['filesize'] - 1;
if (isset($_SERVER['HTTP_RANGE']))
{
preg_match('#^bytes=(-?([0-9]+))(-([0-9]*))?$#', $_SERVER['HTTP_RANGE'], $matches);
if (intval($matches[1]) < 0)
{ // its negative so we want to take this value from last byte
$startbyte = $attachmentinfo['filesize'] - $matches[2];
}
else
{
$startbyte = intval($matches[2]);
if ($matches[4])
{
$lastbyte = $matches[4];
}
}
if ($startbyte < 0 OR $startbyte >= $attachmentinfo['filesize'])
{
if (SAPI_NAME == 'cgi' OR SAPI_NAME == 'cgi-fcgi')
{
header('Status: 416 Requested Range Not Satisfiable');
}
else
{
header('HTTP/1.1 416 Requested Range Not Satisfiable');
}
header('Accept-Ranges: bytes');
header('Content-Range: bytes */'. $attachmentinfo['filesize']);
exit;
}
}
// send jpeg header for PDF, BMP, TIF, TIFF, and PSD thumbnails as they are jpegs
if ($vbulletin->GPC['thumb'] AND in_array($extension, array('bmp', 'tif', 'tiff', 'psd', 'pdf')))
{
$attachmentinfo['filename'] = preg_replace('#.(bmp|tiff?|psd|pdf)$#i', '.jpg', $attachmentinfo['filename']);
$mimetype = array('Content-type: image/jpeg');
}
else
{
$mimetype = unserialize($attachmentinfo['mimetype']);
}
header('Cache-control: max-age=31536000, private');
header('Expires: ' . gmdate("D, d M Y H:i:s", TIMENOW + 31536000) . ' GMT');
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $attachmentinfo['dateline']) . ' GMT');
header('ETag: "' . $attachmentinfo['attachmentid'] . '"');
header('Accept-Ranges: bytes');
// look for entities in the file name, and if found try to convert
// the filename to UTF-8
$filename = $attachmentinfo['filename'];
if (preg_match('~&#([0-9]+);~', $filename))
{
if (function_exists('iconv'))
{
$filename_conv = @iconv(vB_Template_Runtime::fetchStyleVar('charset'), 'UTF-8//IGNORE', $filename);
if ($filename_conv !== false)
{
$filename = $filename_conv;
}
}
$filename = preg_replace(
'~&#([0-9]+);~e',
"convert_int_to_utf8('\\1')",
$filename
);
$filename_charset = 'utf-8';
}
else
{
$filename_charset = vB_Template_Runtime::fetchStyleVar('charset');
}
$filename = preg_replace('#[\r\n]#', '', $filename);
// Opera and IE have not a clue about this, mozilla puts on incorrect extensions.
if (is_browser('mozilla'))
{
$filename = "filename*=" . $filename_charset . "''" . rawurlencode($filename);
}
else
{
// other browsers seem to want names in UTF-8
if ($filename_charset != 'utf-8' AND function_exists('iconv'))
{
$filename_conv = iconv($filename_charset, 'UTF-8//IGNORE', $filename);
if ($filename_conv !== false)
{
$filename = $filename_conv;
}
}
if (is_browser('opera') OR is_browser('konqueror') OR is_browser('safari'))
{
// Opera / Konqueror does not support encoded file names
$filename = 'filename="' . str_replace('"', '', $filename) . '"';
}
else
{
// encode the filename to stay within spec
$filename = 'filename="' . rawurlencode($filename) . '"';
}
}
if (in_array($extension, array('jpg', 'jpe', 'jpeg', 'gif', 'png')))
{
header("Content-disposition: inline; $filename");
header('Content-transfer-encoding: binary');
}
else
{
// force files to be downloaded because of a possible XSS issue in IE
header("Content-disposition: attachment; $filename");
}
if ($startbyte != 0 OR $lastbyte != ($attachmentinfo['filesize'] - 1))
{
if (SAPI_NAME == 'cgi' OR SAPI_NAME == 'cgi-fcgi')
{
header('Status: 206 Partial Content');
}
else
{
header('HTTP/1.1 206 Partial Content');
}
header('Content-Range: bytes '. $startbyte .'-'. $lastbyte .'/'. $attachmentinfo['filesize']);
}
header('Content-Length: ' . (($lastbyte + 1) - $startbyte));
if (is_array($mimetype))
{
foreach ($mimetype AS $header)
{
if (!empty($header))
{
header($header);
}
}
}
else
{
header('Content-type: unknown/unknown');
}
// This is new in IE8 and tells the browser not to try and guess
header('X-Content-Type-Options: nosniff');
// prevent flash from ever considering this to be a cross domain file
header('X-Permitted-Cross-Domain-Policies: none');
($hook = vBulletinHook::fetch_hook('attachment_display')) ? eval($hook) : false;
// update views counter
if (!$vbulletin->GPC['thumb'] AND connection_status() == 0 AND $lastbyte == ($attachmentinfo['filesize'] - 1))
{
if ($vbulletin->options['attachmentviewslive'])
{
// doing it as they happen; not using a DM to avoid overhead
$db->query_write("
UPDATE " . TABLE_PREFIX . "attachment SET
counter = counter + 1
WHERE attachmentid = $attachmentinfo[attachmentid]
");
}
else
{
// or doing it once an hour
$query = "INSERT INTO " . TABLE_PREFIX . "attachmentviews (attachmentid)
VALUES ($attachmentinfo[attachmentid])
";
defined('NOSHUTDOWNFUNC') ? $db->query_write($query) : $db->shutdown_query($query);
}
}
if ($vbulletin->options['attachfile'])
{
if (defined('NOSHUTDOWNFUNC'))
{
if ($_GET['stc'] == 1)
{
$db->close();
}
else
{
exec_shut_down();
}
}
if ($startbyte > 0)
{
fseek($fp, $startbyte);
}
while (connection_status() == 0 AND $startbyte <= $lastbyte)
{ // You can limit bandwidth by decreasing the values in the read size call, they must be equal.
$size = $lastbyte - $startbyte;
$readsize = ($size > 1048576) ? 1048576 : $size + 1;
echo @fread($fp, $readsize);
$startbyte += $readsize;
flush();
}
@fclose($fp);
}
else
{
// start grabbing the filedata in batches of 2mb
while (connection_status() == 0 AND $startbyte <= $lastbyte)
{
$size = $lastbyte - $startbyte;
$readsize = ($size > 2097152) ? 2097152 : $size + 1;
$attachmentinfo = $db->query_first_slave("
SELECT filedataid, SUBSTRING(" . ((!empty($vbulletin->GPC['thumb']) ? 'thumbnail' : 'filedata')) . ", $startbyte + 1, $readsize) AS filedata
FROM " . TABLE_PREFIX . "filedata
WHERE filedataid = $attachmentinfo[filedataid]
");
echo $attachmentinfo['filedata'];
$startbyte += $readsize;
flush();
}
if (defined('NOSHUTDOWNFUNC'))
{
if ($_GET['stc'] == 1)
{
$db->close();
}
else
{
exec_shut_down();
}
}
}
($hook = vBulletinHook::fetch_hook('attachment_complete')) ? eval($hook) : false;
/*======================================================================*\
|| ####################################################################
|| # CVS: $RCSfile$ - $Revision: 35055 $
|| ####################################################################
\*======================================================================*/
?>