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<?php
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/*******************************************************************************
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* Title: Help Desk Software HESK
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* Version: 2.6.5 from 28th August 2015
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* Author: Klemen Stirn
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* Website: http://www.hesk.com
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********************************************************************************
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* COPYRIGHT AND TRADEMARK NOTICE
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* Copyright 2005-2015 Klemen Stirn. All Rights Reserved.
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* HESK is a registered trademark of Klemen Stirn.
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* The HESK may be used and modified free of charge by anyone
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* AS LONG AS COPYRIGHT NOTICES AND ALL THE COMMENTS REMAIN INTACT.
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* By using this code you agree to indemnify Klemen Stirn from any
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* liability that might arise from it's use.
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* Selling the code for this program, in part or full, without prior
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* written consent is expressly forbidden.
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* Using this code, in part or full, to create derivate work,
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* new scripts or products is expressly forbidden. Obtain permission
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* before redistributing this software over the Internet or in
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* any other medium. In all cases copyright and header must remain intact.
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* This Copyright is in full effect in any country that has International
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* Trade Agreements with the United States of America or
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* with the European Union.
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* Removing any of the copyright notices without purchasing a license
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* is expressly forbidden. To remove HESK copyright notice you must purchase
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* a license for this script. For more information on how to obtain
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* a license please visit the page below:
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* https://www.hesk.com/buy.php
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*******************************************************************************/
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define('IN_SCRIPT', 1);
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define('HESK_PATH', './');
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// Get all the required files and functions
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require(HESK_PATH . 'hesk_settings.inc.php');
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require(HESK_PATH . 'inc/common.inc.php');
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hesk_load_database_functions();
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hesk_session_start();
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// Are we in maintenance mode? (check customers only)
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if (empty($SESSION['id'])) {
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hesk_check_maintenance();
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}
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// Knowledgebase attachments
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if (isset($_GET['kb_att'])) {
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// Attachment ID
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$att_id = intval(hesk_GET('kb_att')) or hesk_error($hesklang['id_not_valid']);
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// Connect to database
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hesk_dbConnect();
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// Get attachment info
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$res = hesk_dbQuery("SELECT * FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "kb_attachments` WHERE `att_id`='{$att_id}' LIMIT 1");
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if (hesk_dbNumRows($res) != 1) {
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hesk_error($hesklang['id_not_valid'] . ' (att_id)');
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}
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$file = hesk_dbFetchAssoc($res);
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// Is this person allowed access to this attachment?
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$res = hesk_dbQuery("SELECT `t1`.`type` as `cat_type`, `t2`.`type` as `art_type`
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FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "kb_articles` AS `t2`
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JOIN `" . hesk_dbEscape($hesk_settings['db_pfix']) . "kb_categories` AS `t1`
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ON `t2`.`catid` = `t1`.`id`
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WHERE (`t2`.`attachments` LIKE '{$att_id}#%' OR `t2`.`attachments` LIKE '%,{$att_id}#%' )
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LIMIT 1");
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// If no attachment found, throw an error
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if (hesk_dbNumRows($res) != 1) {
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hesk_error($hesklang['id_not_valid'] . ' (no_art)');
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}
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$row = hesk_dbFetchAssoc($res);
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// Private or draft article or category?
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if ($row['cat_type'] || $row['art_type']) {
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if (empty($_SESSION['id'])) {
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// This is a staff-only attachment
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hesk_error($hesklang['attpri']);
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} elseif ($row['art_type'] == 2) {
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// Need permission to manage KB to access draft attachments
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require(HESK_PATH . 'inc/admin_functions.inc.php');
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hesk_checkPermission('can_man_kb');
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}
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}
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} // Ticket attachments
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else {
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// Attachmend ID and ticket tracking ID
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$att_id = intval(hesk_GET('att_id', 0)) or die($hesklang['id_not_valid']);
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$tic_id = hesk_cleanID() or die("$hesklang[int_error]: $hesklang[no_trackID]");
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// Connect to database
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hesk_dbConnect();
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// Get attachment info
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$res = hesk_dbQuery("SELECT * FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "attachments` WHERE `att_id`='{$att_id}' LIMIT 1");
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if (hesk_dbNumRows($res) != 1) {
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hesk_error($hesklang['id_not_valid'] . ' (att_id)');
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}
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$file = hesk_dbFetchAssoc($res);
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// Is ticket ID valid for this attachment?
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if ($file['ticket_id'] != $tic_id) {
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hesk_error($hesklang['trackID_not_found']);
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}
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// Verify email address match if needed
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if (empty($_SESSION['id'])) {
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hesk_verifyEmailMatch($tic_id);
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// Only staff may download attachments to notes
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if ($file['type']) {
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hesk_error($hesklang['perm_deny']);
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}
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}
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// Update the download count
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}
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// Path of the file on the server
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$realpath = $hesk_settings['attach_dir'] . '/' . $file['saved_name'];
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if (isset($_GET['kb_att'])) {
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$modsForHesk_settings = mfh_getSettings();
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$realpath = $modsForHesk_settings['kb_attach_dir'] . '/' . $file['saved_name'];
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}
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// Perhaps the file has been deleted?
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if (!file_exists($realpath)) {
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hesk_error($hesklang['attdel']);
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}
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// Update the download count
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if (isset($_GET['kb_att'])) {
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hesk_dbQuery("UPDATE `" . hesk_dbEscape($hesk_settings['db_pfix']) . "kb_attachments` SET `download_count` = `download_count` + 1 WHERE `att_id` = '{$att_id}'");
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} else {
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hesk_dbQuery("UPDATE `" . hesk_dbEscape($hesk_settings['db_pfix']) . "attachments` SET `download_count` = `download_count` + 1 WHERE `att_id` = '{$att_id}'");
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}
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// Send the file as an attachment to prevent malicious code from executing
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header("Pragma: "); # To fix a bug in IE when running https
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header("Cache-Control: "); # To fix a bug in IE when running https
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header('Content-Description: File Transfer');
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header('Content-Type: application/octet-stream');
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header('Content-Length: ' . $file['size']);
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header('Content-Disposition: attachment; filename=' . $file['real_name']);
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// For larger files use chunks, smaller ones can be read all at once
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$chunksize = 1048576; // = 1024 * 1024 (1 Mb)
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if ($file['size'] > $chunksize) {
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$handle = fopen($realpath, 'rb');
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$buffer = '';
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while (!feof($handle)) {
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set_time_limit(300);
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$buffer = fread($handle, $chunksize);
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echo $buffer;
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flush();
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}
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fclose($handle);
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} else {
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readfile($realpath);
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}
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exit();
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?>
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