<?
/**
* Encryption class
*
* @package Encryption
* @author Ewg
* @category Security
* @todo Multi file
*/
class Encryption
{
/**
* File content
* @var String
*/
public $content;
/**
* File content not changed
* @var String
*/
public $content_source;
/**
* All varibles
* @var Array|String
*/
public $vars = array ();
/**
* Chains of varibles
* @example "class name" <=> "352=>array (370, 307)"
* @var Array
*/
private $chains = array (
352=>array (370, 307), // class
347=> array (370, 309), // var
341=>array (370, 309), // public
343=>array (370, 309), // private
342=>array (370, 309), // protected
299=>array (370, 307) // new
);
/**
* Forbidden for replace strings
* @var Array
*/
private $forbidden = array ('Exception', '$this');
/**
* a..z
* @var Array
*/
public $abc = array ();
/**
* Address of source file
* @var String
*/
public $file_source;
/**
* Class activation
*/
public function __construct ()
{
if (empty ($this->abc))
{
$this->abc = range (a, z);
}
}
/**
* Parse activation
* @param String $file_source
* @return Object $this
*/
public function parse ($file_source)
{
$this->content_source = file_get_contents($this->file_source = $file_source);
$this->content = token_get_all ($this->content_source);
foreach ($this->content as $key=>$value)
{
if(is_array ($value))
{
$this->content[$key]['2'] = token_name($value['0']);
if (isset ($chain))
{
if (is_array ($chain))
{
if ($this->chains[$chainid][$i]===$chain['0'])
{
$i++;
$chain = array ($this->chains[$chainid][$i]);
}
else
{
unset ($chain);
}
}
else
{
$chainid = $chain;
$i = 0;
$end = end ($this->chains[$chainid]);
$chain = array (reset ($this->chains[$chain]));
}
if ($end===$chain['0'])
{
if ($value['0']===$chain['0'])
{
$this->add ($value['1'], $value['0']);
}
unset ($chain);
}
}
else
{
if (array_key_exists ($value['0'], $this->chains))
{
$chain = $value['0'];
}
else
{
if ($value['0']===309)
{
$this->add ($value['1'], 309);
}
}
}
}
}
return $this;
}
/**
* Add varible to action
* @param String $id
* @param Int $type
*/
public function add ($id, $type = false)
{
if (!in_array ($id, $this->vars) and !(in_array ($id, $this->forbidden)))
{
if ($type===307)
{
$type = false;
}
$this->vars[] = array ($id, $type);
}
}
/**
* Main action - code
* @param String $file
* @return Json vars
*/
public function codeit ($file)
{
foreach ($this->vars as $key=>$value)
{
$temp[$value['0']] = ($value['1']? '$': '').$this->gen_name ();
}
$this->content_source = strtr ($this->content_source, $temp);
file_put_contents($file, $this->content_source);
return $this->vars = json_encode(array ($this->file_source=>$temp));
}
/**
* Generate unique name
* @return String
*/
private function gen_name ()
{
return $this->abc[rand (0, 25)].$this->abc[rand (0, 25)].str_repeat('_', rand (2, 15)).$this->abc[rand (0, 25)];
}
}
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