/index.php

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<?php
/***************************************************************************
 *
 *             Encode Explorer
 *
 *             Author / Autor : Marek Rei (marek 채t siineiolekala dot net)
 *
 *             Version / Versioon : 6.3
 *
 *             Last change / Viimati muudetud: 23.09.2011
 *
 *             Homepage / Koduleht: encode-explorer.siineiolekala.net
 *
 *
 *             NB!: Comments are in english.
 *                  Comments needed for configuring are in both estonian and english.
 *                  If you change anything, save with UTF-8! Otherwise you may
 *                  encounter problems, especially when displaying images.
 *
 ***************************************************************************/

/***************************************************************************
 *
 *   This is free software and it's distributed under GPL Licence.
 *
 *   Encode Explorer is written in the hopes that it can be useful to people.
 *   It has NO WARRANTY and when you use it, the author is not responsible
 *   for how it works (or doesn't).
 *   
 *   The icon images are designed by Mark James (http://www.famfamfam.com) 
 *   and distributed under the Creative Commons Attribution 3.0 License.
 *
 ***************************************************************************/

/***************************************************************************/
/*   HERE ARE THE SETTINGS FOR CONFIGURATION                               */
/***************************************************************************/

//
// Initialising variables. Don't change these.
//

$_CONFIG = array();
$_ERROR = "";
$_START_TIME = microtime(TRUE);

/* 
 * GENERAL SETTINGS
 */

//
// Choose a language. See below in the language section for options.
// Default: $_CONFIG['lang'] = "en";
//
$_CONFIG['lang'] = "en";

//
// Display thumbnails when hovering over image entries in the list.
// Common image types are supported (jpeg, png, gif).
// Pdf files are also supported but require ImageMagick to be installed.
// Default: $_CONFIG['thumbnails'] = true;
//
$_CONFIG['thumbnails'] = true;

//
// Maximum sizes of the thumbnails.
// Default: $_CONFIG['thumbnails_width'] = 200;
// Default: $_CONFIG['thumbnails_height'] = 200;
//
$_CONFIG['thumbnails_width'] = 300;
$_CONFIG['thumbnails_height'] = 300;

//
// Mobile interface enabled. true/false
// Default: $_CONFIG['mobile_enabled'] = true;
//
$_CONFIG['mobile_enabled'] = true;


//
// Mobile interface as the default setting. true/false
// Default: $_CONFIG['mobile_default'] = false;
//
$_CONFIG['mobile_default'] = false;

/*
 * USER INTERFACE
 */

//
// Will the files be opened in a new window? true/false 
// Default: $_CONFIG['open_in_new_window'] = false;
//
$_CONFIG['open_in_new_window'] = false;

//
// How deep in subfolders will the script search for files? 
// Set it larger than 0 to display the total used space.
// Default: $_CONFIG['calculate_space_level'] = 0;
//
$_CONFIG['calculate_space_level'] = 0;

//
// Will the page header be displayed? 0=no, 1=yes. 
// Default: $_CONFIG['show_top'] = true;
//
$_CONFIG['show_top'] = true;

//
// The title for the page
// Default: $_CONFIG['main_title'] = "Directory Contents";
//
$_CONFIG['main_title'] = "Directory Contents";

//
// The secondary page titles, randomly selected and displayed under the main header.
// For example: $_CONFIG['secondary_titles'] = array("Secondary title", "&ldquo;Secondary title with quotes&rdquo;");
// Default: $_CONFIG['secondary_titles'] = array();
//
$_CONFIG['secondary_titles'] = array();

//
// Display breadcrumbs (relative path of the location).
// Default: $_CONFIG['show_path'] = true;
//
$_CONFIG['show_path'] = true;

//
// Display the time it took to load the page.
// Default: $_CONFIG['show_load_time'] = true;
//
$_CONFIG['show_load_time'] = true;

//
// The time format for the "last changed" column.
// Default: $_CONFIG['time_format'] = "d.m.y H:i:s";
//
$_CONFIG['time_format'] = "d.m.y H:i:s";

//
// Charset. Use the one that suits for you. 
// Default: $_CONFIG['charset'] = "UTF-8";
//
$_CONFIG['charset'] = "UTF-8";

/*
* PERMISSIONS
*/

//
// The array of folder names that will be hidden from the list.
// Default: $_CONFIG['hidden_dirs'] = array();
//
$_CONFIG['hidden_dirs'] = array();

//
// Filenames that will be hidden from the list.
// Default: $_CONFIG['hidden_files'] = array(".ftpquota", "index.php", "index.php~", ".htaccess", ".htpasswd");
//
$_CONFIG['hidden_files'] = array(".ftpquota", "index.php", "index.php~", ".htaccess", ".htpasswd");

//
// Whether authentication is required to see the contents of the page.
// If set to false, the page is public.
// If set to true, you should specify some users as well (see below).
// Important: This only prevents people from seeing the list.
// They will still be able to access the files with a direct link.
// Default: $_CONFIG['require_login'] = false;
//
$_CONFIG['require_login'] = false;

//
// Usernames and passwords for restricting access to the page.
// The format is: array(username, password, status)
// Status can be either "user" or "admin". User can read the page, admin can upload and delete.
// For example: $_CONFIG['users'] = array(array("username1", "password1", "user"), array("username2", "password2", "admin"));
// You can also keep require_login=false and specify an admin. 
// That way everyone can see the page but username and password are needed for uploading.
// For example: $_CONFIG['users'] = array(array("username", "password", "admin"));
// Default: $_CONFIG['users'] = array();
//
$_CONFIG['users'] = array();

//
// Permissions for uploading, creating new directories and deleting.
// They only apply to admin accounts, regular users can never perform these operations.
// Default:
// $_CONFIG['upload_enable'] = true;
// $_CONFIG['newdir_enable'] = true;
// $_CONFIG['delete_enable'] = false;
//
$_CONFIG['upload_enable'] = true;
$_CONFIG['newdir_enable'] = true;
$_CONFIG['delete_enable'] = false;

/*
 * UPLOADING
 */

//
// List of directories where users are allowed to upload. 
// For example: $_CONFIG['upload_dirs'] = array("./myuploaddir1/", "./mydir/upload2/");
// The path should be relative to the main directory, start with "./" and end with "/".
// All the directories below the marked ones are automatically included as well.
// If the list is empty (default), all directories are open for uploads, given that the password has been set.
// Default: $_CONFIG['upload_dirs'] = array();
//
$_CONFIG['upload_dirs'] = array();

//
// MIME type that are allowed to be uploaded.
// For example, to only allow uploading of common image types, you could use:
// $_CONFIG['upload_allow_type'] = array("image/png", "image/gif", "image/jpeg");
// Default: $_CONFIG['upload_allow_type'] = array();
//
$_CONFIG['upload_allow_type'] = array();

//
// File extensions that are not allowed for uploading.
// For example: $_CONFIG['upload_reject_extension'] = array("php", "html", "htm");
// Default: $_CONFIG['upload_reject_extension'] = array();
//
$_CONFIG['upload_reject_extension'] = array("php");

/*
 * LOGGING
 */

//
// Upload notification e-mail.
// If set, an e-mail will be sent every time someone uploads a file or creates a new dirctory.
// Default: $_CONFIG['upload_email'] = "";
//
$_CONFIG['upload_email'] = "";

//
// Logfile name. If set, a log line will be written there whenever a directory or file is accessed.
// For example: $_CONFIG['log_file'] = ".log.txt";
// Default: $_CONFIG['log_file'] = "";
//
$_CONFIG['log_file'] = "";

/*
 * SYSTEM
 */

//
// The starting directory. Normally no need to change this.
// Use only relative subdirectories! 
// For example: $_CONFIG['starting_dir'] = "./mysubdir/";
// Default: $_CONFIG['starting_dir'] = ".";
//
$_CONFIG['starting_dir'] = ".";

//
// Location in the server. Usually this does not have to be set manually.
// Default: $_CONFIG['basedir'] = "";
//
$_CONFIG['basedir'] = "";

//
// Big files. If you have some very big files (>4GB), enable this for correct
// file size calculation.
// Default: $_CONFIG['large_files'] = false;
//
$_CONFIG['large_files'] = false;

//
// The session name, which is used as a cookie name. 
// Change this to something original if you have multiple copies in the same space
// and wish to keep their authentication separate. 
// The value can contain only letters and numbers. For example: MYSESSION1
// More info at: http://www.php.net/manual/en/function.session-name.php
// Default: $_CONFIG['session_name'] = "";
//
$_CONFIG['session_name'] = "";

/***************************************************************************/
/*   TRANSLATIONS.                                                         */
/***************************************************************************/

$_TRANSLATIONS = array();

// English
$_TRANSLATIONS["en"] = array(
	"file_name" => "File name",
	"size" => "Size",
	"last_changed" => "Last changed",
	"total_used_space" => "Total used space",
	"free_space" => "Free space",
	"password" => "Password",
	"upload" => "Upload",
	"failed_upload" => "Failed to upload the file!",
	"failed_move" => "Failed to move the file into the right directory!",
	"wrong_password" => "Wrong password",
	"make_directory" => "New dir",
	"new_dir_failed" => "Failed to create directory",
	"chmod_dir_failed" => "Failed to change directory rights",
	"unable_to_read_dir" => "Unable to read directory",
	"location" => "Location",
	"root" => "Root",
	"log_file_permission_error" => "The script does not have permissions to write the log file.",
	"upload_not_allowed" => "The script configuration does not allow uploading in this directory.",
	"upload_dir_not_writable" => "This directory does not have write permissions.",
	"mobile_version" => "Mobile view",
	"standard_version" => "Standard view",
	"page_load_time" => "Page loaded in %.2f ms",
	"wrong_pass" => "Wrong username or password",
	"username" => "Username",
	"log_in" => "Log in",
	"upload_type_not_allowed" => "This file type is not allowed for uploading.",
	"del" => "Del", // short for Delete
	"log_out" => "Log out"
);


/***************************************************************************/
/*   CSS FOR TWEAKING THE DESIGN                                           */
/***************************************************************************/


function css()
{
?>
<style type="text/css">

/* General styles */

BODY {
	background-color:#FFFFFF;
	font-family:Verdana;
	font-size:small;
}

A {
	color: #000000;
	text-decoration: none;
}

A:hover {
	text-decoration: underline;
}

#top {
	width:100%;
	padding-bottom: 20px;
}

#top a span, #top a:hover, #top a span:hover{
	color:#68a9d2;
	font-weight:bold;
	text-align:center;
	font-size:large;
}

#top a {
	display:block;
	padding:20px 0 0 0;
}

#top span {
	display:block;
}

div.subtitle{
	width:80%;
	margin: 0 auto;
	color:#68a9d2;
	text-align:center;
}

#frame {
	border: 1px solid #CDD2D6;
	text-align:left;
	position: relative;
	margin: 0 auto;
	max-width:680px;
	overflow:hidden;
}

#error {
	max-width:450px;
	background-color:#FFE4E1;
	color:#000000;
	padding:7pt;
	position: relative;
	margin: 10pt auto;
	text-align:center;
	border: 1px dotted #CDD2D6;
}

input {
	border: 1px solid #CDD2D6;
}

.bar{
	width:100%;
	clear:both;
	height:1px;
}

/* File list */

table.table {
	width:100%;
	border-collapse: collapse; 
}

table.table td{
	padding:3px;
}

table.table tr.row.two {
	background-color:#fcfdfe;
}

table.table tr.row.one {
	background-color:#f8f9fa;
}

table.table tr.row td.icon {
	width:25px;
	padding-top:3px;
	padding-bottom:1px;
}

table.table td.del {
	width:25px;
}

table.table tr.row td.size {
	width: 100px; 
	text-align: right;
}

table.table tr.row td.changed {
	width: 150px;
	text-align: center;
}

table.table tr.header img {
	vertical-align:bottom;
}

table img{
	border:0;
}

/* Info area */ 

#info {
	color:#000000;
	font-family:Verdana;
	max-width:680px;
	position: relative;
	margin: 0 auto;
	text-align:center;
}

/* Thumbnail area */

#thumb {
	position:absolute;
	border: 1px solid #CDD2D6;
	background:#f8f9fa;
	display:none;
	padding:3px;
}

#thumb img {
	display:block;
}

/* Login bar (at the bottom of the page) */
#login_bar {
	margin: 0 auto;
	margin-top:2px;
	max-width:680px;
}

#login_bar input.submit{
	float:right;
}

/* Upload area */

#upload {
	margin: 0 auto;
	margin-top:2px;
	max-width:680px;
}

#upload #password_container {
	margin-right:20px;
}

#upload #newdir_container, #upload #password_container {
	float:left;
}

#upload #upload_container{
	float:right;
}

#upload input.upload_dirname, #upload input.upload_password{
	width:140px;
}

#upload input.upload_file{
	font-size:small;
}

/* Breadcrumbs */

div.breadcrumbs {
	display:block;
	padding:1px 3px;
	color:#cccccc;
	font-size:x-small;
}

div.breadcrumbs a{
	display:inline-block;
	color:#cccccc;
	padding:2px 0;
	font-size:small;
}

/* Login area */

#login {
	max-width:280px;
	text-align:right;
	margin:15px auto 50px auto;
}

#login div {
	display:block;
	width:100%;
	margin-top:5px;
}

#login label{
	width: 120px;
	text-align: right;
}

/* Mobile interface */

body.mobile #frame, body.mobile #info, body.mobile #upload {
	max-width:none;
}

body.mobile {
	font-size:medium;
}

body.mobile a.item {
	display:block;
	padding:10px 0;
}

body.mobile a.item span.size {
	float:right;
	margin-left:10px;
}

body.mobile table.table {
	margin-bottom:30px;
}

body.mobile table.table tr td {
	border-top: 1px solid #CDD2D6;
}

body.mobile table.table tr.last td {
	border-bottom: 1px solid #CDD2D6;
}

body.mobile #top {
	padding-bottom:3px;
}

body.mobile #top a {
	padding-top:3px;
}

body.mobile #upload #password_container, body.mobile #upload #upload_container, body.mobile #upload #newdir_container {
	float:none;
	margin-top:5px;
}

body.mobile #upload input.upload_dirname, body.mobile #upload input.upload_password{
	width:240px;
}

body.mobile #upload {
	margin-bottom:15px;
}

</style>

<?php
}

/***************************************************************************/
/*   IMAGE CODES IN BASE64                                                 */
/*   You can generate your own with a converter                            */
/*   Like here: http://www.motobit.com/util/base64-decoder-encoder.asp     */
/*   Or here: http://www.greywyvern.com/code/php/binary2base64             */
/*   Or just use PHP base64_encode() function                              */
/***************************************************************************/


$_IMAGES = array();

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$_IMAGES["css"] = $_IMAGES["code"];
$_IMAGES["doc"] = $_IMAGES["textdocument"];
$_IMAGES["docx"] = $_IMAGES["textdocument"];
$_IMAGES["exe"] = "iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAQAAAC1+jfqAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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$_IMAGES["gz"] = $_IMAGES["archive"];
$_IMAGES["gif"] = $_IMAGES["image"];
$_IMAGES["h"] = "iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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$_IMAGES["htm"] = $_IMAGES["webpage"];
$_IMAGES["html"] = $_IMAGES["webpage"];
$_IMAGES["iso"] = "iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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$_IMAGES["jpg"] = $_IMAGES["image"];
$_IMAGES["jpeg"] = $_IMAGES["image"];
$_IMAGES["js"] = "iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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$_IMAGES["mov"] = $_IMAGES["video"];
$_IMAGES["mp3"] = $_IMAGES["audio"];
$_IMAGES["mp4"] = $_IMAGES["audio"];
$_IMAGES["mpeg"] = $_IMAGES["video"];
$_IMAGES["mpg"] = $_IMAGES["video"];
$_IMAGES["odg"] = $_IMAGES["vectorgraphics"];
$_IMAGES["odp"] = $_IMAGES["presentation"];
$_IMAGES["ods"] = $_IMAGES["spreadsheet"];
$_IMAGES["odt"] = $_IMAGES["textdocument"];
$_IMAGES["pdf"] = "iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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$_IMAGES["php"] = "iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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$_IMAGES["png"] = $_IMAGES["image"];
$_IMAGES["pps"] = $_IMAGES["presentation"];
$_IMAGES["ppsx"] = $_IMAGES["presentation"];
$_IMAGES["ppt"] = $_IMAGES["presentation"];
$_IMAGES["pptx"] = $_IMAGES["presentation"];
$_IMAGES["psd"] = $_IMAGES["graphics"];
$_IMAGES["rar"] = $_IMAGES["archive"];
$_IMAGES["rb"] = "iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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$_IMAGES["sln"] = "iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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$_IMAGES["sql"] = $_IMAGES["database"];
$_IMAGES["tar"] = $_IMAGES["archive"];
$_IMAGES["tgz"] = $_IMAGES["archive"];
$_IMAGES["txt"] = "iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAQAAAC1+jfqAAAABGdBTUEAAK/INwWK6QAAABl0RVh0
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$_IMAGES["wav"] = $_IMAGES["audio"];
$_IMAGES["wma"] = $_IMAGES["audio"];
$_IMAGES["wmv"] = $_IMAGES["video"];
$_IMAGES["xcf"] = $_IMAGES["graphics"];
$_IMAGES["xls"] = $_IMAGES["spreadsheet"];
$_IMAGES["xlsx"] = $_IMAGES["spreadsheet"];
$_IMAGES["xml"] = $_IMAGES["code"];
$_IMAGES["zip"] = $_IMAGES["archive"];

/***************************************************************************/
/*   HERE COMES THE CODE.                                                  */
/*   DON'T CHANGE UNLESS YOU KNOW WHAT YOU ARE DOING ;)                    */
/***************************************************************************/

//
// The class that displays images (icons and thumbnails)
//
class ImageServer
{
	//
	// Checks if an image is requested and displays one if needed
	//
	public static function showImage()
	{
		global $_IMAGES;
		if(isset($_GET['img']))
		{
			if(strlen($_GET['img']) > 0)
			{
				$mtime = gmdate('r', filemtime($_SERVER['SCRIPT_FILENAME']));
				$etag = md5($mtime.$_SERVER['SCRIPT_FILENAME']);
				
				if ((isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && $_SERVER['HTTP_IF_MODIFIED_SINCE'] == $mtime)
					|| (isset($_SERVER['HTTP_IF_NONE_MATCH']) && str_replace('"', '', stripslashes($_SERVER['HTTP_IF_NONE_MATCH'])) == $etag)) 
				{
					header('HTTP/1.1 304 Not Modified');
					return true;
				}
				else {
					header('ETag: "'.$etag.'"');
					header('Last-Modified: '.$mtime);
					header('Content-type: image/gif');
					if(isset($_IMAGES[$_GET['img']]))
						print base64_decode($_IMAGES[$_GET['img']]);
					else
						print base64_decode($_IMAGES["unknown"]);
				}
			}
			return true;
		}
		else if(isset($_GET['thumb']))
		{
			if(strlen($_GET['thumb']) > 0 && EncodeExplorer::getConfig('thumbnails') == true)
			{
				ImageServer::showThumbnail($_GET['thumb']);
			}
			return true;
		}
		return false;
	}
	
	public static function isEnabledPdf()
	{
		if(class_exists("Imagick"))
			return true;
		return false;
	}
	
	public static function openPdf($file)
	{
		if(!ImageServer::isEnabledPdf())
			return null;
			
		$im = new Imagick($file.'[0]');
		$im->setImageFormat( "png" );
		$str = $im->getImageBlob();
		$im2 = imagecreatefromstring($str);
		return $im2;
	}
	
	//
	// Creates and returns a thumbnail image object from an image file
	//
	public static function createThumbnail($file)
	{
		if(is_int(EncodeExplorer::getConfig('thumbnails_width')))
			$max_width = EncodeExplorer::getConfig('thumbnails_width');
		else
			$max_width = 200;
		
		if(is_int(EncodeExplorer::getConfig('thumbnails_height')))
			$max_height = EncodeExplorer::getConfig('thumbnails_height');
		else
			$max_height = 200;

		if(File::isPdfFile($file))
			$image = ImageServer::openPdf($file);
		else
			$image = ImageServer::openImage($file);
		if($image == null)
			return;
			
		imagealphablending($image, true);
		imagesavealpha($image, true);
			
		$width = imagesx($image);
		$height = imagesy($image);
			
		$new_width = $max_width;
		$new_height = $max_height;
		if(($width/$height) > ($new_width/$new_height))
			$new_height = $new_width * ($height / $width);
		else 
			$new_width = $new_height * ($width / $height);   
		
		if($new_width >= $width && $new_height >= $height)
		{
			$new_width = $width;
			$new_height = $height;
		}
		
		$new_image = ImageCreateTrueColor($new_width, $new_height);
		imagealphablending($new_image, true);
		imagesavealpha($new_image, true);
		$trans_colour = imagecolorallocatealpha($new_image, 0, 0, 0, 127);
		imagefill($new_image, 0, 0, $trans_colour);
		
		imagecopyResampled ($new_image, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
		
		return $new_image;
	}
	
	//
	// Function for displaying the thumbnail.
	// Includes attempts at cacheing it so that generation is minimised.
	//
	public static function showThumbnail($file)
	{
		if(filemtime($file) < filemtime($_SERVER['SCRIPT_FILENAME']))
			$mtime = gmdate('r', filemtime($_SERVER['SCRIPT_FILENAME']));
		else
			$mtime = gmdate('r', filemtime($file));
			
		$etag = md5($mtime.$file);
		
		if ((isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && $_SERVER['HTTP_IF_MODIFIED_SINCE'] == $mtime)
			|| (isset($_SERVER['HTTP_IF_NONE_MATCH']) && str_replace('"', '', stripslashes($_SERVER['HTTP_IF_NONE_MATCH'])) == $etag)) 
		{
			header('HTTP/1.1 304 Not Modified');
			return;
		}
		else
		{
			header('ETag: "'.$etag.'"');
			header('Last-Modified: '.$mtime);
			header('Content-Type: image/png');
			$image = ImageServer::createThumbnail($file);
			imagepng($image);
		}
	}
	
	//
	// A helping function for opening different types of image files
	//
	public static function openImage ($file) 
	{
	    $size = getimagesize($file);
	    switch($size["mime"])
	    {
			case "image/jpeg":
				$im = imagecreatefromjpeg($file);
			break;
			case "image/gif":
				$im = imagecreatefromgif($file);
			break;
			case "image/png":
				$im = imagecreatefrompng($file);
			break;
			default:
				$im=null;
			break;
	    }
	    return $im;
	}
}

//
// The class for logging user activity
//
class Logger
{
	public static function log($message)
	{
		global $encodeExplorer;
		if(strlen(EncodeExplorer::getConfig('log_file')) > 0)
		{
			if(Location::isFileWritable(EncodeExplorer::getConfig('log_file')))
			{
				$message = "[" . date("Y-m-d h:i:s", mktime()) . "] ".$message." (".$_SERVER["HTTP_USER_AGENT"].")\n";
				error_log($message, 3, EncodeExplorer::getConfig('log_file'));
			}
			else
				$encodeExplorer->setErrorString("log_file_permission_error");
		}
	}
	
	public static function logAccess($path, $isDir)
	{
		$message = $_SERVER['REMOTE_ADDR']." ".GateKeeper::getUserName()." accessed ";
		$message .= $isDir?"dir":"file";
		$message .= " ".$path;
		Logger::log($message);
	}
	
	public static function logQuery()
	{
		if(isset($_POST['log']) && strlen($_POST['log']) > 0)
		{
			Logger::logAccess($_POST['log'], false);
			return true;
		}
		else
			return false;
	}
	
	public static function logCreation($path, $isDir)
	{
		$message = $_SERVER['REMOTE_ADDR']." ".GateKeeper::getUserName()." created ";
		$message .= $isDir?"dir":"file";
		$message .= " ".$path;
		Logger::log($message);
	}
	
	public static function emailNotification($path, $isFile)
	{
		if(strlen(EncodeExplorer::getConfig('upload_email')) > 0)
		{
			$message = "This is a message to let you know that ".GateKeeper::getUserName()." ";
			$message .= ($isFile?"uploaded a new file":"created a new directory")." in Encode Explorer.\n\n";
			$message .= "Path : ".$path."\n";
			$message .= "IP : ".$_SERVER['REMOTE_ADDR']."\n";
			mail(EncodeExplorer::getConfig('upload_email'), "Upload notification", $message);
		}
	}
}

//
// The class controls logging in and authentication
//
class GateKeeper
{
	public static function init()
	{
		global $encodeExplorer;
		if(strlen(EncodeExplorer::getConfig("session_name")) > 0)
				session_name(EncodeExplorer::getConfig("session_name"));
				
		if(count(EncodeExplorer::getConfig("users")) > 0)
			session_start();			
		else
			return;
			
		if(isset($_GET['logout']))
		{
			$_SESSION['ee_user_name'] = null;
			$_SESSION['ee_user_pass'] = null;
		}
			
		if(isset($_POST['user_pass']) && strlen($_POST['user_pass']) > 0)
		{
			if(GateKeeper::isUser((isset($_POST['user_name'])?$_POST['user_name']:""), $_POST['user_pass']))
			{
				$_SESSION['ee_user_name'] = isset($_POST['user_name'])?$_POST['user_name']:"";
				$_SESSION['ee_user_pass'] = $_POST['user_pass'];
				
				$addr = $_SERVER['PHP_SELF'];
				if(isset($_GET['m']))
					$addr .= "?m";
				else if(isset($_GET['s']))
					$addr .= "?s";
				header( "Location: ".$addr);
			}
			else
				$encodeExplorer->setErrorString("wrong_pass");
		}
	}
	
	public static function isUser($userName, $userPass)
	{
		foreach(EncodeExplorer::getConfig("users") as $user)
		{
			if($user[1] == $userPass)
			{
				if(strlen($userName) == 0 || $userName == $user[0])
				{
					return true;
				}
			}
		}
		return false;
	}
	
	public static function isLoginRequired()
	{
		if(EncodeExplorer::getConfig("require_login") == false){
			return false;
		}
		return true;
	}
	
	public static function isUserLoggedIn()
	{
		if(isset($_SESSION['ee_user_name']) && isset($_SESSION['ee_user_pass']))
		{
			if(GateKeeper::isUser($_SESSION['ee_user_name'], $_SESSION['ee_user_pass']))
				return true;
		}
		return false;
	}
	
	public static function isAccessAllowed()
	{
		if(!GateKeeper::isLoginRequired() || GateKeeper::isUserLoggedIn())
			return true;
		return false;
	}
	
	public static function isUploadAllowed(){
		if(EncodeExplorer::getConfig("upload_enable") == true && GateKeeper::isUserLoggedIn() == true && GateKeeper::getUserStatus() == "admin")
			return true;
		return false;
	}
	
	public static function isNewdirAllowed(){
		if(EncodeExplorer::getConfig("newdir_enable") == true && GateKeeper::isUserLoggedIn() == true && GateKeeper::getUserStatus() == "admin")
			return true;
		return false;
	}
	
	public static function isDeleteAllowed(){
		if(EncodeExplorer::getConfig("delete_enable") == true && GateKeeper::isUserLoggedIn() == true && GateKeeper::getUserStatus() == "admin")
			return true;
		return false;
	}
	
	public static function getUserStatus(){
		if(GateKeeper::isUserLoggedIn() == true && EncodeExplorer::getConfig("users") != null && is…

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