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Created
Tue, Mar 11, 11:56 AM
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text/x-diff
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Thu, Mar 13, 11:56 AM (19 h, 20 m)
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Index: trunk/obscure.php
===================================================================
--- trunk/obscure.php (revision 1252)
+++ trunk/obscure.php (revision 1253)
@@ -1,274 +1,274 @@
#!/usr/local/bin/php
<?php
if (isset($argv[2]) && $argv[2] != '') {
define('SEED', $argv[2]);
}
else {
define('SEED', rand(0, 100000));
}
function gen_name($old)
{
return md5($old.SEED);
//return '_n_'.$old;
}
$functions = array();
$php = file($argv[1]);
$n = 1;
for($x=0;$x<count($php);$x++)
{
$line = $php[$x];
if ( preg_match("/^[ ]*\/\/.*?$/", trim($line)) ) {
//echo "SKIPPING ".$php[$x];
$php[$x] = "";
continue; //cut comments
}
if ( preg_match("/^\/\*.*\*\/$/", trim($line)) ) {
//echo "SKIPPING ".$php[$x];
$php[$x] = "";
continue; //cut comments
}
if(substr($line,0,10)=="function _")
{
$dec_parts = explode(" ",$line,2);
$pp = explode("(",$dec_parts[1]);
$name = $pp[0];
$attribs="(".$pp[1];
//echo "found func $name attribs: $attribs\n";
$start = $x;
for($f=$x;$f<count($php);$f++)
{
if(substr($php[$f],0,1)=="}")
{
$end = $f;
break;
}
}
if($start && $end && strlen($name))
{
$newname = "_".gen_name($n);
$n++;
$functions[$name] = array("start"=>$start,"end"=>$end,"attribs"=>$attribs,"newname"=>$newname);
}
}
}
// print_r($functions);
//echo "<PRE>"; print_r($functions); echo "</PRE>";
function GetVarName($s)
{
$alphabet = "abcdefghijklmnopqrstuvwxyz_ABCDEFGHIJKLMNOPQRSTUVWXYZ";
$name = "";
$var_end = 0;
$char = substr($s,$var_end,1);
if(substr($s,0,1)=="$")
{
$var_end++;
$char = substr($s,$var_end,1);
}
while(is_numeric(strpos($alphabet,$char)) && strlen($char))
{
$name .= $char;
$var_end++;
$char = substr($s,$var_end,1);
}
return $name;
}
function obscure_func($NewName,$Attribs,$code)
{
global $functions;
$globals = array();
$globals[] = '$this';
$globals[] = '$_GET';
$globals[] = '$_FILES';
$globals[] = '$_POST';
$globals[] = '$_COOKIE';
$globals[] = '$_SERVER';
$variables = array();
$new_code = array();
for($x=0;$x<=count($code);$x++)
{
$line = $code[$x];
$line = ltrim($line);
$line = str_replace("\t","",$line);
$g = strpos($line,"global");
if(is_numeric($g))
{
$vars = trim(substr($line,$g+7));
$vars = substr($vars,0,-1);
$v = explode(",",$vars);
for($z=0;$z<count($v);$z++)
$globals[] = ltrim($v[$z]);
}
$new_code[$x] = $line;
}
$code = $new_code;
for($x=0;$x<count($code);$x++)
{
foreach($functions as $name=>$attr)
{
$line = $code[$x];
$code[$x] = str_replace($name,$attr["newname"],$line);
}
}
$VarCount =0;
if(strlen($Attribs)>3)
{
$Attribs = trim($Attribs);
$Attribs = str_replace("\t","",$Attribs);
//echo "getting attribs from $Attribs\n";
$a = explode(",",substr($Attribs,1,-1));
// echo "got attribs for func [$Attribs]:\n";
// var_dump($a);
if (is_array($a) && $a[0] != '') {
foreach($a as $attr)
{
list($attr,$default) = explode('=', $attr);
//echo "attr: $attr / def = $default\n";
if ($default != '') {
$defaults[$attr] = $default;
//echo "stored defaults for $attr\n";
}
$variables[$attr] = '$_'.gen_name($VarCount++);
}
}
}
for($x=0;$x<count($code);$x++)
{
$line = $code[$x];
if(!strlen($line))
continue;
$p = strpos($line,"$");
while($p>0)
{
if(substr($line,$p,2)!="$$")
{
$name=GetVarName(substr($line,$p));
if(strlen($name))
{
$name = "$".trim($name);
if(!in_array($name,$globals) && !array_key_exists($name,$variables))
$variables[$name] = '$_'.gen_name($VarCount++);
}
}
$p = strpos($line,"$",$p+1);
}
}
for($x=0;$x<count($code);$x++)
{
// print_r($variables);
foreach($variables as $v=>$varname)
{
//echo "strpos ".$code[$x].', '.$v."\n";
$p = strpos($code[$x],$v);
while(is_numeric($p))
{
$t = GetVarName(substr($code[$x],$p));
if('$'.$t == $v)
{
$code[$x] = substr_replace($code[$x],$varname,$p,strlen($t)+1);
}
$p = strpos($code[$x],$v,$p+1);
}
}
}
$o = "function $NewName"."(";
if (is_array($a)) {
foreach($a as $attr)
{
list($attr,$default) = explode('=', $attr);
$av[] = ($variables[$attr].(isset($defaults[$attr]) ? '='.$defaults[$attr] : ''));
}
}
if(count($av)>0)
$o .= implode(",",$av);
$o .= ")";
//echo "reversed: $o\n";
$o .= implode(" ",$code);
//$o = str_replace("\n","",$o);
return $o;
}
$out = "";
$outline = 0;
$shuffled = array_rand($functions, count($functions));
// print_r($shuffled);
foreach ($shuffled as $name) {
$pos = $functions[$name];
//foreach($functions as $name =>$pos)
//{
$dest = $pos["start"];
$newname = $pos["newname"];
if(!$outline)
$outline = $dest;
unset($code);
for($x=$dest+1;$x<=$pos["end"];$x++)
{
$code[] = $php[$x];
}
$newcode = obscure_func($newname,$pos["attribs"],$code);
$out .= $newcode;
}
foreach($functions as $name=>$pos)
{
for($x=$pos["start"];$x<=$pos["end"];$x++)
{
$php[$x] = "";
}
}
$code =array();
for($x=0;$x<count($php);$x++) {
$line = $php[$x];
foreach($functions as $name=>$attr)
{
$line = str_replace($name,$attr["newname"],$line);
}
$code[$x] = $line;
}
$php = $code;
$line=1;
$tmp_file = fopen($argv[1].'_', 'w');
for($x=0;$x<count($php);$x++)
{
if($x==$outline) {
//echo "$line: ".$out;
fwrite($tmp_file, $out);
}
if(strlen($php[$x])) {
//echo "$line: ".ltrim($php[$x]);
fwrite($tmp_file, ltrim($php[$x]));
}
$line++;
}
fclose($tmp_file);
- //rename($argv[1].'_', $argv[1]);
+ rename($argv[1].'_', $argv[1]);
?>
Property changes on: trunk/obscure.php
___________________________________________________________________
Modified: cvs2svn:cvs-rev
## -1 +1 ##
-1.7
\ No newline at end of property
+1.8
\ No newline at end of property
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