<?php
/**
* file_utils is a class designed to bring you basic commands to work over an fs.
* <br>Last update: October 24, 2006.
* <br>Author: Marcelo Entraigas <m_entraigas at yahoo dot com>.
* <br>Licence: BSD License.
*/
define('_linux', strpos(_path,':')? false : true);
define('_slash', _linux? '/' : chr(92));
class file_utils {
var $files = array();
var $folders = array();
var $chroot = '/var/www/';
/**
* class constructor.
* here is defined the default working path.
*
* @param string $path
*/
function file_utils ($path='') {
//check for '/../', '/./' and '//'
$pattern = (_linux == true) ? '([/+\.{0,2}/?]+)' : '([\\+\.{0,2}\\?]+)';
if($path===''){
$path = dirname(__FILE__) . _slash;
}else{
$path = ereg_replace($pattern, '/', $path);
}
//default chroot
if ($this->chroot != ''){
$pattern = sprintf("%s",str_replace('/','\/',$this->chroot));
if (!ereg ("^{$pattern}",$path))
$path = $this->chroot;
}
define('_path' , $path);
}
/**
* List a folder content and put it on $this->folders or $this->files.
*
* @param string $path
*/
function ls($path=''){
clearstatcache();
$handle = @opendir($path);
if($handle==false){
$path = _path;
}
$handle = @opendir($path);
if($handle != false){
while(false!==($filename=@readdir($handle))){
if ($filename == '..'){
$pattern = (_linux == true) ? '(\/+[^/]+\/?)$' : ''; //msdos repace missing!
$filepath = ereg_replace($pattern, '', $path);
}else{
$filepath = $path . $filename;
}
$flag = 'folders';
$tmp['filepath'] = $filepath;
$tmp['description'] = htmlentities($filename);
$tmp['perms'] = sprintf("%o",@fileperms($filepath));
$tmp['time'] = date("H:i m-d-y",@filemtime($filepath));
if(@is_file($filepath)){
$flag = 'files';
$tmp['size'] = filesize($filepath);
}
$eval = sprintf("\$this->%s['%s'] = \$tmp;", $flag, $filename);
eval($eval);
}
}
@closedir($handle);
@ksort($this->files);
@ksort($this->folders);
}
/**
* Get a human redable size
*
* @param integer $size
* @return string
*/
function get_size($size){
$size = (int) $size;
if($size<1000)
$size = sprintf("%0.0f Bytes",$size);
elseif ($size<(1024*1000))
$size = sprintf("%0.2f KB",$size/1024);
elseif ($size<(1024*1024*1000))
$size = sprintf("%0.2f MB",$size/(1024*1024));//1048576
else
$size = sprintf("%0.2f GB",$size/(1024*1024*1024));//1073741824
return $size;
}
/**
* Dowload a file from server
*
* @param string $file
*/
function download($file){
if(is_file($file) && @fopen($file,'r')){
header("Content-type: application/force-download");
header(sprintf("Content-Disposition: attachment; filename=%s",basename($file)));
@readfile($file);
}else{
header('HTTP/1.0 401 Unauthorized');
}
exit;
}
/**
* Make a folder on the server
*
* @param string $dir
* @param string $perm
*/
function mkdir ($dir, $perm='0777'){
$tmp = explode(_slash, $dir);
$path = '';
foreach ($tmp as $local) {
$path .= $local . _slash;
$mkdir = "if(@mkdir('$dir',$perm)==false) return false;";
eval($mkdir);
}
}
/**
* Cahnge file perms
*
* @param string $file
* @param string $perm
*/
function chmod ($file, $perm) {
$perm = ereg('[1-7]{1,3}',$perm)? sprintf("0%d",$perm) : "'$perm'";
$chmod = "@chmod('$file', $perm);";
eval($chmod);
}
/**
* Upload a file/s to the server
*
* @param string $to
*/
function upload ($to) {
foreach ($_FILES as $file) {
if(is_uploaded_file($file['tmp_name'])){
@move_uploaded_file($file['tmp_name'], $to . basename($file['name']));
@chmod($to . basename($file['name']), 0755);
}
}
}
/**
* Delete a file from the server
*
* @param string $filename
*/
function rm ($filename) {
@unlink($filename);
}
/**
* Generate/overwrite a file with content
*
* @param string $content
* @param string $to
* @return true|false
*/
function save ($content, $to){
if(!empty($content) and $fp = @fopen($to, 'w')) {
@fwrite($fp, $content);
return @fclose($fp);
}
return false;
}
/**
* Generate/append a file with content
*
* @param string $content
* @param string $to
* @return true|false
*/
function append ($string, $to){
if(!empty($string) and $fp = @fopen($to, 'a')) {
@fwrite($fp, $string);
return @fclose($fp);
}
return false;
}
}
?>
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