vulnshop_central_code

<?php
        switch($_GET['page']) {
            case 'default':
            default:
                echo "<p>Welcome to our website about infosec. It's still under construction, but you can begin to browse some pages!</p>";
                break;
            case 'introduction':
                echo "<p>Our website will introduce some new vulnerabilities. Let's check it out later!</p>";
                break;
            case 'privacy':
                echo "<p>This website is unbreakable, so don't worry when contacting us about some new vulnerabilities!</p>";
                break;
            case 'contactus':
                echo "<p>You can't contact us for the moment, but it will be available later.</p>";
                $_SESSION['challenge'] = rand(100000,999999);
                break;
            case 'captcha':
                if(isset($_SESSION['challenge'])) echo $_SESSION['challenge'];
                // Will make an image later
                touch($_SESSION['challenge']);
                break;
            case 'captcha-verify':
                // verification functions take a file for later, when we'll provide more way of verification
                function verifyFromString($file, $response) {
                    if($_SESSION['challenge'] === $response) return true;
                    else return false;
                }
                // Captcha from math op
                function verifyFromMath($file, $response) {
                    if(eval("return ".$_SESSION['challenge']." ;") === $response) return true;
                    else return false;
                }
                if(isset($_REQUEST['answer']) && isset($_REQUEST['method']) && function_exists($_REQUEST['method'])){
                    $_REQUEST['method']("./".$_SESSION['challenge'], $_REQUEST['answer']);
                }
                break;
        }
?>