<?php
 class elFinderPluginSanitizer extends elFinderPlugin {
 private $replaced = array();
 private $keyMap = array( 'ls' => 'intersect', 'upload' => 'renames', 'mkdir' => array('name', 'dirs') );
 public function __construct($opts) {
 $defaults = array( 'enable' => true, 'targets' => array('\\', '/', ':', '*', '?', '"', '<', '>', '|'), 'replace' => '_', 'callBack' => null );
 $this->opts = array_merge($defaults, $opts);
 }
 public function cmdPreprocess($cmd, &$args, $elfinder, $volume) {
 $opts = $this->getCurrentOpts($volume);
 if (!$opts['enable']) {
 return false;
 }
 $this->replaced[$cmd] = array();
 $key = (isset($this->keyMap[$cmd])) ? $this->keyMap[$cmd] : 'name';
 if (is_array($key)) {
 $keys = $key;
 }
 else {
 $keys = array($key);
 }
 foreach ($keys as $key) {
 if (isset($args[$key])) {
 if (is_array($args[$key])) {
 foreach ($args[$key] as $i => $name) {
 if ($cmd === 'mkdir' && $key === 'dirs') {
 $name = '/' . ltrim($name, '/');
 $_names = explode('/', $name);
 $_res = array();
 foreach ($_names as $_name) {
 $_res[] = $this->sanitizeFileName($_name, $opts);
 }
 $this->replaced[$cmd][$name] = $args[$key][$i] = join('/', $_res);
 }
 else {
 $this->replaced[$cmd][$name] = $args[$key][$i] = $this->sanitizeFileName($name, $opts);
 }
 }
 }
 else if ($args[$key] !== '') {
 $name = $args[$key];
 $this->replaced[$cmd][$name] = $args[$key] = $this->sanitizeFileName($name, $opts);
 }
 }
 }
 if ($cmd === 'ls' || $cmd === 'mkdir') {
 if (!empty($this->replaced[$cmd])) {
 $elfinder->unbind($cmd, array($this, 'cmdPostprocess'));
 $elfinder->bind($cmd, array($this, 'cmdPostprocess'));
 }
 }
 return true;
 }
 public function cmdPostprocess($cmd, &$result, $args, $elfinder, $volume) {
 if ($cmd === 'ls') {
 if (!empty($result['list']) && !empty($this->replaced['ls'])) {
 foreach ($result['list'] as $hash => $name) {
 if ($keys = array_keys($this->replaced['ls'], $name)) {
 if (count($keys) === 1) {
 $result['list'][$hash] = $keys[0];
 }
 else {
 $result['list'][$hash] = $keys;
 }
 }
 }
 }
 }
 else if ($cmd === 'mkdir') {
 if (!empty($result['hashes']) && !empty($this->replaced['mkdir'])) {
 foreach ($result['hashes'] as $name => $hash) {
 if ($keys = array_keys($this->replaced['mkdir'], $name)) {
 $result['hashes'][$keys[0]] = $hash;
 }
 }
 }
 }
 }
 public function onUpLoadPreSave(&$thash, &$name, $src, $elfinder, $volume) {
 $opts = $this->getCurrentOpts($volume);
 if (!$opts['enable']) {
 return false;
 }
 $name = $this->sanitizeFileName($name, $opts);
 return true;
 }
 protected function sanitizeFileName($filename, $opts) {
 if (!empty($opts['callBack']) && is_callable($opts['callBack'])) {
 return call_user_func_array($opts['callBack'], array($filename, $opts));
 }
 return str_replace($opts['targets'], $opts['replace'], $filename);
 }
 }
 