--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/includes/captcha/engine_default.php	Wed Feb 06 18:41:47 2008 -0500
@@ -0,0 +1,150 @@
+<?php
+
+/*
+ * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
+ * Version 1.1.1 (Caoineag alpha 1)
+ * Copyright (C) 2006-2007 Dan Fuhry
+ * captcha.php - visual confirmation system used during registration
+ *
+ * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
+ *
+ * This file contains code written by Paul Sohier (www.paulscripts.nl). The CAPTCHA code was ported from the phpBB Better
+ * Captcha mod, and has been released under the GPLv2 by the original author.
+ */
+
+/**
+ * The default CAPTCHA engine. Generates medium-strength captchas with very good performance.
+ * @package Enano
+ * @subpackage User management
+ * @copyright 2007-2008 Dan Fuhry
+ * @copyright Paul Sohier
+ */
+ 
+class captcha_engine_default extends captcha_base
+{
+  function make_image()
+  {
+    $code =& strtoupper($this->get_code());
+    
+    /**
+      * The next part is orginnaly written by ted from mastercode.nl and modified for use in Enano.
+      **/
+    header("content-type:image/png");
+    header('Cache-control: no-cache, no-store');
+    $breedte = 320;
+    $hoogte = 60;
+    $img = imagecreatetruecolor($breedte,$hoogte);
+    $achtergrond = imagecolorallocate($img, $this->color("bg"), $this->color("bg"), $this->color("bg"));
+    
+    imagefilledrectangle($img, 0, 0, $breedte-1, $hoogte-1, $achtergrond);
+    for($g = 0;$g < 30; $g++)
+    {
+      $t = $this->dss_rand();
+      $t = $t[0];
+          
+      $ypos = rand(0,$hoogte);
+      $xpos = rand(0,$breedte);
+          
+      $kleur = imagecolorallocate($img, $this->color("bgtekst"), $this->color("bgtekst"), $this->color("bgtekst"));
+          
+      imagettftext($img, $this->size(), $this->move(), $xpos, $ypos, $kleur, $this->font(), $t);
+    } 			
+    $stukje = $breedte / (strlen($code) + 3);
+    
+    for($j = 0;$j < strlen($code); $j++)
+    {
+      
+      
+      $tek = $code[$j];
+      $ypos = rand(33,43);
+      $xpos = $stukje * ($j+1);
+          
+      $kleur2 = imagecolorallocate($img, $this->color("tekst"), $this->color("tekst"), $this->color("tekst"));
+      
+      imagettftext($img, $this->size(), $this->move(), $xpos, $ypos, $kleur2, $this->font() , $tek);
+    }
+      
+    imagepng($img);
+  }
+  
+  /**
+    * Some functions :)
+    * Also orginally written by mastercode.nl
+    **/
+  /**
+    * Function to create a random color
+    * @param $type string Mode for the color
+    * @return int
+    **/
+  function color($type)
+  {
+    switch($type)
+    {
+      case "bg": 
+        $kleur = rand(224,255); 
+      break;
+      case "tekst": 
+        $kleur = rand(0,127); 
+      break;
+      case "bgtekst": 
+        $kleur = rand(200,224); 
+      break;
+      default: 
+        $kleur = rand(0,255); 
+      break;
+    }
+    return $kleur;
+  }
+  /**
+    * Function to ranom the size
+    * @return int
+    **/
+  function size()
+  {
+    $grootte = rand(14,30);
+    return $grootte;
+  }
+  /**
+    * Function to random the posistion
+    * @return int
+    **/
+  function move()
+  {
+    $draai = rand(-25,25);
+    return $draai;
+  }
+  
+  /**
+    * Function to return a ttf file from fonts map
+    * @return string
+    **/
+  function font()
+  {
+    $f = @opendir(ENANO_ROOT . '/includes/captcha/fonts/');
+    if(!$f) die('Can\'t open includes/captcha/fonts/ for reading');
+    $ar = array();
+    while(($file = @readdir($f)) !== false)
+    {
+      if(!in_array($file, array('.','..')) && strstr($file, '.ttf'))
+      {
+        $ar[] = $file;
+      }
+    }
+    if(count($ar))
+    {
+      shuffle($ar);
+      $i = rand(0,(count($ar) - 1));
+      return ENANO_ROOT . '/includes/captcha/fonts/' . $ar[$i];
+    }
+  }
+  function dss_rand()
+  {
+    $val = microtime() .  mt_rand();
+    $val = md5($val . 'a');
+    return substr($val, 4, 16);
+  }
+}