<?php
/*******************************************************************************
 *  Title: Help Desk Software HESK
 *  Version: 2.6.5 from 28th August 2015
 *  Author: Klemen Stirn
 *  Website: http://www.hesk.com
 ********************************************************************************
 *  COPYRIGHT AND TRADEMARK NOTICE
 *  Copyright 2005-2015 Klemen Stirn. All Rights Reserved.
 *  HESK is a registered trademark of Klemen Stirn.
 *  The HESK may be used and modified free of charge by anyone
 *  AS LONG AS COPYRIGHT NOTICES AND ALL THE COMMENTS REMAIN INTACT.
 *  By using this code you agree to indemnify Klemen Stirn from any
 *  liability that might arise from it's use.
 *  Selling the code for this program, in part or full, without prior
 *  written consent is expressly forbidden.
 *  Using this code, in part or full, to create derivate work,
 *  new scripts or products is expressly forbidden. Obtain permission
 *  before redistributing this software over the Internet or in
 *  any other medium. In all cases copyright and header must remain intact.
 *  This Copyright is in full effect in any country that has International
 *  Trade Agreements with the United States of America or
 *  with the European Union.
 *  Removing any of the copyright notices without purchasing a license
 *  is expressly forbidden. To remove HESK copyright notice you must purchase
 *  a license for this script. For more information on how to obtain
 *  a license please visit the page below:
 *  https://www.hesk.com/buy.php
 *******************************************************************************/

/* Check if this is a valid include */
if (!defined('IN_SCRIPT')) {
    die('Invalid attempt');
}

/***************************
 * Function hesk_uploadFiles()
 ***************************/
function hesk_uploadFile($i, $isTicket = true, $ajax = false)
{
    global $hesk_settings, $hesklang, $trackingID, $hesk_error_buffer, $modsForHesk_settings;

    /* Return if name is empty */
    if (empty($_FILES['attachment']['name'][$i])) {
        return '';
    }

    /* Parse the name */
    $file_realname = hesk_cleanFileName($_FILES['attachment']['name'][$i]);

    /* Check file extension */
    $ext = strtolower(strrchr($file_realname, "."));
    if (!in_array($ext, $hesk_settings['attachments']['allowed_types'])) {
        return hesk_fileError(sprintf($hesklang['type_not_allowed'], $ext, $file_realname));
    }

    /* Check file size */
    if ($_FILES['attachment']['size'][$i] > $hesk_settings['attachments']['max_size']) {
        return hesk_fileError(sprintf($hesklang['file_too_large'], $file_realname));
    } else {
        $file_size = $_FILES['attachment']['size'][$i];
    }

    /* Generate a random file name */
    $useChars = 'AEUYBDGHJLMNPQRSTVWXZ123456789';
    $tmp = uniqid();
    for ($j = 1; $j < 10; $j++) {
        $tmp .= $useChars{mt_rand(0, 29)};
    }

    if ($ajax) {
        // Temporary attachments are, well, temporary. We can just use the real name since they'll be deleted afterwards.
        $file_name = $file_realname;
    } else {
        if (defined('KB')) {
            $file_name = substr(md5($tmp . $file_realname), 0, 200) . $ext;
        } else {
            $file_name = substr($trackingID . '_' . md5($tmp . $file_realname), 0, 200) . $ext;
        }
    }

    // Does the temporary file exist? If not, probably server-side configuration limits have been reached
    // Uncomment this for debugging purposes
    /*
    if ( ! file_exists($_FILES['attachment']['tmp_name'][$i]) )
    {
		return hesk_fileError($hesklang['fnuscphp']);
    }
    */

    /* If upload was successful let's create the headers */
    $directory = $hesk_settings['attach_dir'];
    if (!$isTicket) {
        $directory = $modsForHesk_settings['kb_attach_dir'];
    }
    if ($ajax) {
        $directory = $modsForHesk_settings[''];
    }
    if (!move_uploaded_file($_FILES['attachment']['tmp_name'][$i], dirname(dirname(__FILE__)) . '/' . $directory . '/' . $file_name)) {
        return hesk_fileError($hesklang['cannot_move_tmp']);
    }

    $info = array(
        'saved_name' => $file_name,
        'real_name' => $file_realname,
        'size' => $file_size
    );

    return $info;
} // End hesk_uploadFile()


function hesk_fileError($error)
{
    global $hesk_settings, $hesklang, $trackingID;
    global $hesk_error_buffer;

    $hesk_error_buffer['attachments'] = $error;

    return false;
} // End hesk_fileError()


function hesk_removeAttachments($attachments, $isTicket)
{
    global $hesk_settings, $hesklang, $modsForHesk_settings;

    $directory = $hesk_settings['attach_dir'];
    if (!$isTicket) {
        $directory = $modsForHesk_settings['kb_attach_dir'];
    }

    $hesk_settings['server_path'] = dirname(dirname(__FILE__)) . '/' . $directory . '/';

    foreach ($attachments as $myatt) {
        hesk_unlink($hesk_settings['server_path'] . $myatt['saved_name']);
    }

    return true;
} // End hesk_removeAttachments()