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<?php /** * * This file is part of HESK - PHP Help Desk Software. * * (c) Copyright Klemen Stirn. All rights reserved. * https://www.hesk.com * * For the full copyright and license agreement information visit * https://www.hesk.com/eula.php * */ /* Check if this is a valid include */ if (!defined('IN_SCRIPT')) {die('Invalid attempt');} class PJ_SecurityImage { function __construct($key) { $this->code = ''; $this->key = $key; } // End PJ_SecurityImage function encrypt($plain_text) { $this->code = trim(sha1($plain_text.$this->key)); } // End encrypt function checkCode($mystring,$checksum) { $this->encrypt($mystring); if ($this->code == $checksum) return true; else return false; } // End checkCode function printImage($random_number) { $im = @imagecreate(150, 40) or die("Cannot Initialize new GD image stream"); $background_color = imagecolorallocate($im, mt_rand(0,100), mt_rand(0,100), mt_rand(0,100)); for ($i=0;$i<strlen($random_number);$i++) { $text_color = imagecolorallocate($im, mt_rand(180,255), mt_rand(180,255), mt_rand(100,255)); $display = substr($random_number,$i,1); $x = ($i*30) + mt_rand(3,16); $y = mt_rand(3,26); imagestring($im, 5, $x, $y, $display, $text_color); } if ( function_exists('imagejpeg') ) { header("Content-type: image/jpeg"); imagejpeg($im); } elseif ( function_exists('imagepng') ) { header("Content-type: image/png"); imagepng($im); } elseif ( function_exists('imagegif') ) { header("Content-type: image/gif"); imagegif($im); } else { die("GD was not compiled with JPEG or PNG support"); } imagedestroy($im); } // End printImage function get() { return $this->code; } // End get } // End class PJ_SecurityImage
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