Version 1.4.9: Password recovery and security middleware

system/Extensions/TwigCaptchaExtension.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace Typemill\Extensions;
+
+use Gregwar\Captcha\CaptchaBuilder;
+
+class TwigCaptchaExtension extends \Twig_Extension
+{
+	public function getFunctions()
+	{
+		return [
+			new \Twig_SimpleFunction('captcha', array($this, 'captchaImage' ))
+		];
+	}
+	
+	public function captchaImage($initialize = false)
+	{
+
+		if(isset($_SESSION['captcha']) OR $initialize)
+		{
+			$builder = new CaptchaBuilder;
+			$builder->build();
+
+			$error = '';
+			if(isset($_SESSION['captcha']) && $_SESSION['captcha'] === 'error')
+			{
+				$error = '<span class="error">The captcha was wrong.</span>';
+			}
+
+			$_SESSION['phrase'] = $builder->getPhrase();
+
+			$_SESSION['captcha'] = true;
+
+			$template = '<div class="formElement">' .
+							'<label for="captcha">Captcha</label>' .
+							'<input type="text" name="captcha">' .
+							$error .
+							'<img class="captcha" src="' . $builder->inline() . '" />' . 
+						'</div>';
+
+			return $template;
+		}
+	}
+}