From 129934f892850a90f98f8f5a0e7746cfe57bb958 Mon Sep 17 00:00:00 2001
From: Antonio Gallo <tonicucoz@gmail.com>
Date: Mon, 28 May 2012 15:31:57 +0000
Subject: added new EasyGiant library
---
h-source/Library/Image/Gd/Captcha.php | 103 ++++++++++++++++++++++++++++++++++
1 file changed, 103 insertions(+)
create mode 100644 h-source/Library/Image/Gd/Captcha.php
(limited to 'h-source/Library/Image/Gd/Captcha.php')
diff --git a/h-source/Library/Image/Gd/Captcha.php b/h-source/Library/Image/Gd/Captcha.php
new file mode 100644
index 0000000..1e8d706
--- /dev/null
+++ b/h-source/Library/Image/Gd/Captcha.php
@@ -0,0 +1,103 @@
+<?php
+
+// EasyGiant is a PHP framework for creating and managing dynamic content
+//
+// Copyright (C) 2009 - 2011 Antonio Gallo
+// See COPYRIGHT.txt and LICENSE.txt.
+//
+// This file is part of EasyGiant
+//
+// EasyGiant is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// EasyGiant 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 more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with EasyGiant. If not, see <http://www.gnu.org/licenses/>.
+
+if (!defined('EG')) die('Direct access not allowed!');
+
+//class to create a captcha
+//you have to call session_start() before to initialize a captcha object
+class Image_Gd_Captcha
+{
+
+ private $params = array(); //parameters of the object
+ private $string = null; //the text string of the captcha
+
+ public function __construct($params = null)
+ {
+ $here = realpath('.');
+
+ $defaultParams = array(
+ 'boxWidth' => 150,
+ 'boxHeight' => 100,
+ 'charNumber' => 6,
+ 'fontPath' => $here.'/External/Fonts/FreeFont/FreeMono.ttf',
+ 'undulation' => true,
+ 'align' => false,
+ 'charHeight' => 28,
+ 'sessionKey' => 'captchaString',
+ );
+
+ //set the $this->scaffold->params array
+ if (is_array($params))
+ {
+ foreach ($params as $key => $value)
+ {
+ $defaultParams[$key] = $value;
+ }
+ }
+ $this->params = $defaultParams;
+
+ $this->string = generateString($this->params['charNumber']);
+ }
+
+ public function render()
+ {
+ //space among characters
+ $space = $this->params['boxWidth'] / ($this->params['charNumber']+1);
+ //create the image box
+ $img = imagecreatetruecolor($this->params['boxWidth'],$this->params['boxHeight']);
+
+ $background = imagecolorallocate($img,255,255,255);
+ $border = imagecolorallocate($img,0,0,0);
+ $colors[] = imagecolorallocate($img,mt_rand(0,125),mt_rand(0,125),mt_rand(0,125));
+ $colors[] = imagecolorallocate($img,mt_rand(0,125),mt_rand(0,125),mt_rand(0,125));
+ $colors[] = imagecolorallocate($img,mt_rand(0,125),mt_rand(0,125),mt_rand(0,125));
+
+ //create the background
+ imagefilledrectangle($img,1,1,$this->params['boxWidth']-2,$this->params['boxHeight']-2,$background);
+ imagerectangle($img,0,0,$this->params['boxWidth']-1,$this->params['boxHeight']-2,$border);
+
+ //set the text
+ for ($i=0; $i< $this->params['charNumber']; $i++)
+ {
+ $color = $colors[$i % count($colors)];
+ $char = substr($this->string,$i,1);
+ $fontPath = $this->params['fontPath'];
+ $angle = $this->params['undulation'] === false ? 0 : -20+rand(0,40);
+ $yposFixed = (int)(($this->params['boxHeight'])/2);
+ $ypos = $this->params['align'] === true ? $yposFixed : $yposFixed + mt_rand(0,10);
+ $charHeight = $this->params['charHeight'];
+ imagettftext($img,$charHeight + rand(0,8),$angle,($i+0.3)*$space,$ypos,$color,$fontPath,$char);
+ }
+
+ $noiseColor = imagecolorallocate($img, mt_rand(125,255), mt_rand(125,255), mt_rand(125,255));
+ /* generate random dots in background */
+ for( $i=0; $i<($this->params['boxWidth'] * $this->params['boxHeight'])/7; $i++ ) {
+ imagefilledellipse($img, mt_rand(0,$this->params['boxWidth']), mt_rand(0,$this->params['boxHeight']), 1, 1, $noiseColor);
+ }
+
+ $_SESSION[$this->params['sessionKey']] = $this->string;
+ header('Content-Type: image/png');
+ imagepng($img);
+ imagedestroy($img);
+ }
+
+}
\ No newline at end of file
--
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