Integrity.php

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<?php
// This file should be in UTF8 without BOM - Accents examples: éèê
// +----------------------------------------------------------------------+
// | Copyright (c) 2004-2015 Advisto SAS, service PEEL - contact@peel.fr  |
// +----------------------------------------------------------------------+
// | This file is part of PEEL Shopping 8.0.0, which is subject to an   |
// | opensource GPL license: you are allowed to customize the code           |
// | for your own needs, but must keep your changes under GPL                |
// | More information: https://www.peel.fr/lire/licence-gpl-70.html          |
// +----------------------------------------------------------------------+
// | Author: Advisto SAS, RCS 479 205 452, France, https://www.peel.fr/      |
// +----------------------------------------------------------------------+
// $Id: Integrity.php 46935 2015-09-18 08:49:48Z gboussin $
if (!defined('IN_PEEL')) {
     die();
}

class Integrity {
   
    protected $_path;
    protected $_tree = array();
   
    public function __construct($path) {
        if(substr($path,-1) != "/"){
           $this->_path = $path."/";
        } else {
            $this->_path = $path;
        }
        $this->_getFileList();
    }
   
    public function checkMD5Hashes($file){
        if (!is_readable($file)) {
            return FALSE;
        }
        $file = file($file);
        $hashes = array();
        foreach ($file as $line) {
            $temp = explode(' ', $line);
            $hashes[trim($temp[1])] = $temp[0];
        }
        $modifies = array();
       
        /* busca los archivos añadidos */
        foreach($this->_tree as $key => $value){
            if(!array_key_exists($key, $hashes)) {
                $modifies[] = $this->_getFileStats($key,'added');
            }
        }
        /* busca archivos eliminados */
        foreach($hashes as $key => $value){
            if(!array_key_exists($key, $this->_tree)) {
                $modifies[] = $this->_reportFileMissing($key);
            }
        }
        /* busca archivos modificados */
        foreach($this->_tree as $key => $value){
            if(array_key_exists($key, $hashes)) {
                if($value != $hashes[$key]){
                    $modifies[] = $this->_getFileStats($key,'modified');
                }
            }
        }
       
        return $modifies;
    }
   
    public function getMD5Hashes($file = null){
        if(!isset($file)){
            $file = date('YmdHis').".md5";
        }
        $hashes = '';
        foreach ($this->_tree as $key => $value){
            $hashes .= $value." ".$key."\n";
        }
        return file_put_contents($file, $hashes);
    }
   
    private function _getFileList($path = null){
        if(!$path){
            $path = $this->_path;
        }
        if(!is_dir($path)){
            return FALSE;
        }
        $root = opendir($path);
        while($entry = readdir($root)) {
            if ($entry != "." && $entry != ".." && !in_array($entry, array('JShield', 'cache', 'upload', 'compile', 'installation', 'sessions'))) {
                if (is_dir($path.$entry)){
                    $this->_getFileList($path.$entry."/");
                } else {
                    $this->_tree[str_replace($this->_path,"",$path.$entry)] = md5_file($path.$entry);
                }
            }
        }
        closedir($root);
        return $this->_tree;
    }
   
    private function _getFileStats($file,$stat){
        if(is_readable($this->_path.$file)) {
            $mdata = stat($this->_path.$file);
            return array(
                'filename' => $file,
                'stat' => $stat,
                'uid' => $mdata[4],
                'gid' => $mdata[5],
                'size' => $mdata[7],
                'lastAccess' => date('Y-m-d H:i:s',$mdata[8]),
                'lastModification' => date('Y-m-d H:i:s',$mdata[9])
            );
        }
    }
   
    private function _reportFileMissing($file){
        return array(
            'filename' => $file,
            'stat' => 'deleted',
            'uid' => null,
            'gid' => null,
            'size' => null,
            'lastAccess' => null,
            'lastModification' => null
        );
    }
}