%PDF- %PDF-<?php

// -----------------------------------------------
// Cryptographp v1.3
// (c) 2006 Sylvain BRISON 
//
// www.cryptographp.com 
// cryptographp@alphpa.com 
//
// Licence CeCILL (Voir Licence_CeCILL_V2-fr.txt)
// -----------------------------------------------

 if(session_id() == "") session_start();
 $_SESSION['cryptdir'] =  "http://www.mixs.fr/";
 
 function dsp_crypt($cfg=0,$reload=1) {
 // Affiche le cryptogramme
 echo "<table><tr><td><img id='cryptogram' img src='".$_SESSION['cryptdir']."cryptographp.php?cfg=".$cfg."&".SID."'></td>";
 if ($reload) echo "<td><a title='".($reload==1?'':$reload)."' style=\"cursor:pointer\" onclick=\"javascript:document.images.cryptogram.src='".$_SESSION['cryptdir']."cryptographp.php?cfg=".$cfg."&".SID."&'+Math.round(Math.random(0)*1000)+1\"><img src=\"".$_SESSION['cryptdir']."images/refresh.gif\"></a></td>";
 echo "</tr></table>";
 }


 function chk_crypt($code) {
 // Vérifie si le code est correct

  $difuplow = false;
  $cryptsecure = "md5";

 $code = addslashes ($code);
 $code = ($difuplow?$code:strtoupper($code));
 switch (strtoupper($cryptsecure)) {    
        case "MD5"  : $code = md5($code); break;
        case "SHA1" : $code = sha1($code); break;
        }
 if ($_SESSION['cryptcode'] and ($_SESSION['cryptcode'] == $code))
    {
    unset($_SESSION['cryptreload']);
    return true;
    }
    else {
         $_SESSION['cryptreload']= true;
         return false;
         }
 }


  /**
    @function timeCode

    Encodage de l'heure limite.
  */    
  function timeCode($date_post)
  {
 
      // heure exacte de creation du billet (inconnue de notre spammeur)

  list($date,$heure) = explode(" ",$date_post); 
  list($annee,$mois,$jour) = explode("-",$date); 
  list($heure,$minute,$seconde) = explode(":",$heure); 
  
  $ts = (int) mktime($heure, $minute, $seconde, $mois, $jour, $annee);
      
      // heure actuelle (relative / billet)
     $refTime = (int) (time() - $ts);
      
      // encodage de l'heure (sans reveler l'heure de reference)
      return base_convert( $refTime ^ $ts, 10, 36);      
  }

  /**
    @function isValid

    Verifier la validite d'une URL de trackback securisee
  */  
  function timeout( $timeout=900 )
  {
      global $mysqlconnect, $id;
      
      // teste la presence du code de controle
      if ( !isset($_GET['chk']) ) {
          // pas de code => spam
          return True;
      }
    
$mysqlquery13   = "SELECT * FROM blogs_posts WHERE id_post='".$id."'";
$mysqlresult13  =  mysql_query($mysqlquery13,$mysqlconnect);
  $row3=mysql_fetch_row($mysqlresult13);
    $date_post=$row3[5];
	
      // heure de creation du billet
  list($date,$heure) = explode(" ",$date_post); 
  list($annee,$mois,$jour) = explode("-",$date); 
  list($heure,$minute,$seconde) = explode(":",$heure); 
  
  $ts = (int) mktime($heure, $minute, $seconde, $mois, $jour, $annee);
      
      // heure actuelle (relative / billet)
      $curTime = (int) (time() - $ts);                       
      
      // decodage de l'heure relative de l'URL
      $refTime = ( (int) base_convert( $_GET['chk'], 36, 10 )) ^ $ts;
      
      // calcul de l'age de l'URL
      $duration = $curTime - $refTime;
      
      // Controle expiration URL / timeout 
      if ( $duration < 2 || $duration > $timeout ) {
          return True;
      }
      return False;
  }
  
  
  /**
    @function spamDetected

    Obtenir un message sympathique a adresser a nos gentils spammeurs.
  */    
  function spamDetected( $message = "Trackbacks are allowed for humans only on this weblog." ) {
      return '<error>1</error>'."\n".
	      '<message>'.$message.'</message>';
  }

?>