Current File : /home/komfo908/www/suporte/_old/download_attachment.php
<?php
/**
*
* This file is part of HESK - PHP Help Desk Software.
*
* (c) Copyright Klemen Stirn. All rights reserved.
* https://www.hesk.com
*
* For the full copyright and license agreement information visit
* https://www.hesk.com/eula.php
*
*/
define('IN_SCRIPT',1);
define('HESK_PATH','./');
// Get all the required files and functions
require(HESK_PATH . 'hesk_settings.inc.php');
require(HESK_PATH . 'inc/common.inc.php');
hesk_load_database_functions();
hesk_session_start();
// Are we in maintenance mode? (check customers only)
if ( empty($_SESSION['id']) )
{
hesk_check_maintenance();
}
// Knowledgebase attachments
if ( isset($_GET['kb_att']) )
{
// Attachment ID
$att_id = intval( hesk_GET('kb_att') ) or hesk_error($hesklang['id_not_valid']);
// Connect to database
hesk_dbConnect();
// Get attachment info
$res = hesk_dbQuery("SELECT * FROM `".hesk_dbEscape($hesk_settings['db_pfix'])."kb_attachments` WHERE `att_id`='{$att_id}' LIMIT 1");
if (hesk_dbNumRows($res) != 1)
{
hesk_error($hesklang['id_not_valid'].' (att_id)');
}
$file = hesk_dbFetchAssoc($res);
// Is this person allowed access to this attachment?
$res = hesk_dbQuery("SELECT `t1`.`type` as `cat_type`, `t2`.`type` as `art_type`
FROM `".hesk_dbEscape($hesk_settings['db_pfix'])."kb_articles` AS `t2`
JOIN `".hesk_dbEscape($hesk_settings['db_pfix'])."kb_categories` AS `t1`
ON `t2`.`catid` = `t1`.`id`
WHERE (`t2`.`attachments` LIKE '{$att_id}#%' OR `t2`.`attachments` LIKE '%,{$att_id}#%' )
LIMIT 1");
// If no attachment found, throw an error
if (hesk_dbNumRows($res) != 1)
{
hesk_error($hesklang['id_not_valid'].' (no_art)');
}
$row = hesk_dbFetchAssoc($res);
// Private or draft article or category?
if ($row['cat_type'] || $row['art_type'])
{
if ( empty($_SESSION['id']) )
{
// This is a staff-only attachment
hesk_error($hesklang['attpri']);
}
elseif ($row['art_type'] == 2)
{
// Need permission to manage KB to access draft attachments
require(HESK_PATH . 'inc/admin_functions.inc.php');
hesk_checkPermission('can_man_kb');
}
}
}
// Ticket attachments
else
{
// Attachmend ID and ticket tracking ID
$att_id = intval( hesk_GET('att_id', 0) ) or die($hesklang['id_not_valid']);
$tic_id = hesk_cleanID() or die("$hesklang[int_error]: $hesklang[no_trackID]");
// Connect to database
hesk_dbConnect();
// Get attachment info
$res = hesk_dbQuery("SELECT * FROM `".hesk_dbEscape($hesk_settings['db_pfix'])."attachments` WHERE `att_id`='{$att_id}' LIMIT 1");
if (hesk_dbNumRows($res) != 1)
{
hesk_error($hesklang['id_not_valid'].' (att_id)');
}
$file = hesk_dbFetchAssoc($res);
// Is ticket ID valid for this attachment?
if ($file['ticket_id'] != $tic_id)
{
hesk_error($hesklang['trackID_not_found']);
}
// Verify email address match if needed
if ( empty($_SESSION['id']) )
{
hesk_verifyEmailMatch($tic_id);
// Only staff may download attachments to notes
if ($file['type'])
{
hesk_error($hesklang['perm_deny']);
}
}
}
// Path of the file on the server
$realpath = $hesk_settings['attach_dir'] . '/' . $file['saved_name'];
// Perhaps the file has been deleted?
if ( ! file_exists($realpath))
{
hesk_error($hesklang['attdel']);
}
// Send the file as an attachment to prevent malicious code from executing
header("Pragma: "); # To fix a bug in IE when running https
header("Cache-Control: "); # To fix a bug in IE when running https
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Length: ' . $file['size']);
header('Content-Disposition: attachment; filename=' . $file['real_name']);
// For larger files use chunks, smaller ones can be read all at once
$chunksize = 1048576; // = 1024 * 1024 (1 Mb)
if ($file['size'] > $chunksize)
{
$handle = fopen($realpath, 'rb');
$buffer = '';
while ( ! feof($handle))
{
set_time_limit(300);
$buffer = fread($handle, $chunksize);
echo $buffer;
flush();
}
fclose($handle);
}
else
{
readfile($realpath);
}
exit();
?>
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