<?
/****
* Titre........... : PHPSecureURL
* Description..... : Hide URL parameter to secure PHP pages
* version......... : 0.51
* date............ : april 16 2003
* file............ : phpsecureurl.pclass
* Auteur.......... : Pascal CASENOVE pascal@cawete.com
*
* licence......... : The GNU General Public License (GPL)
* http://www.opensource.org/licenses/gpl-license.html
*
* changement...... : 0.51 the first publishing version
* A faire......... : Waitting for suggest
*
* Suggestion...... : don’t hesitate… CONTACT ME !!
* pascal@cawete.com
*
* Description ... : With PHP, to pass parameters between two pages you can use something like this
* http://www.monsite.net/mapage.php?parametre1=123&user=456
* A visitor can modify thoses parameters just to see
* or to test parameters.
* Example he modify user parameter and he see the account of another user.
* This classes hide parameters. You don't have to modify your code.
* You have just to add some lines and your link become somethig like
* http://www.monsite.net/mapage.php?aku=DFgh4hfdg4454fgHFGHfg44fghfg4
*
* remarques ...... : it not use cryptography.
* It just use a difficult read format
*
* Methodes........ : **encode($var) return the hide URL with original URL in parameter.
*
* **decode($var) internal methode
*
*
* Proprietes...... : **decode_url URL unhide
*
* Parametres...... : $var_name the name of the parameter transmit by the URL default aku
*
****/
/*******************************************************************
*
* class
*
********************************************************************/
class phpsecureurl{
var $var_name="aku"; // you hide all your URL in thid parmeter "aku" is an example you can redefine
var $decode_url; // url unhide
function code_param_url(){
$this->decode();
}
//*******************************************
function encode($url){ // methode to encode $url = par1=toto&par2=tioti& ...
$pos_debut=strpos($url,"?"); if(!$pos_debut){$sep="&";}
$pos_fin=strpos($url," ");
if($pos_fin){
$pos_long=$pos_fin-$pos_debut-1; $fin=substr($url,$pos_fin);
}else{
$pos_long=strlen($url)-$pos_debut-1;
}
$debut=substr($url,0,$pos_debut+1);
$param=substr($url,$pos_debut+1,$pos_long);
$code = base64_encode($param);
return $debut.$sep.$this->var_name."=".$code.$fin;
} // methode return ?aku=dfgdfgdgdfgdgdfhgjdfhjghj all parameter are hide in one
// methode returm something like ?aku=dfgdfgdgdfgdgdfhgjdfhjghj all parameters un one
// $url can be "http://www.moserveur.com/monfichier.php?var1=dfdf& var2=fdsgdf&var3=dfg "
// or "http://www.moserveur.com/monfichier.php?var1=dfdf& var2=fdsgdf&var3=dfg target=_self"
// or only "?var1=dfdf& var2=fdsgdf&var3=dfg"
//*********************************************
//**************** decode and change global variables
function decode (){ // methode to unhide
if($_REQUEST[$this->var_name]){
$this->decode_url=base64_decode($_REQUEST[$this->var_name]);
parse_str($this->decode_url, $tbl);
foreach($tbl as $k=>$v){
$_REQUEST[$k]=$v;
global $$k;
$$k=$v;
}
}
}
//*********************************
}
?>
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