extracted SecuredLinksPresenterTrait::getCsrfToken() to Helpers class

Author: JanTvrdik

src/Helpers.php

@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * This file is part of the Nextras\Orm library.
+ * @license    MIT
+ * @link       https://github.com/nextras/link-factory
+ */
+
+namespace Nextras\Application\UI;
+
+use Nette;
+use Nette\Http\Session;
+
+
+class Helpers
+{
+	/**
+	 * Returns unique token for method and params
+	 * @param  Session $session
+	 * @param  string  $control
+	 * @param  string  $method
+	 * @param  array   $params
+	 * @return string
+	 */
+	public static function getCsrfToken(Session $session, $control, $method, $params)
+	{
+		$sessionSection = $session->getSection('Nextras.Application.UI.SecuredLinksPresenterTrait');
+		if (!isset($sessionSection->token)) {
+			$sessionSection->token = function_exists('random_bytes')
+				? random_bytes(16)
+				: Nette\Utils\Random::generate(16, "\x00-\xFF");
+		}
+
+		$params = Nette\Utils\Arrays::flatten($params);
+		$params = implode('|', array_keys($params)) . '|' . implode('|', array_values($params));
+		return substr(md5($control . $method . $params . $sessionSection->token . $session->getId()), 0, 8);
+	}
+}

src/SecuredLinksPresenterTrait.php

@@ -112,16 +112,7 @@ public function createSecuredLink(PresenterComponent $component, $link, $destina
 	 */
 	public function getCsrfToken($control, $method, $params)
 	{
-		$session = $this->getSession('Nextras.Application.UI.SecuredLinksPresenterTrait');
-		if (!isset($session->token)) {
-			$session->token = function_exists('random_bytes')
-				? random_bytes(16)
-				: Nette\Utils\Random::generate(16, "\x00-\xFF");
-		}
-
-		$params = Nette\Utils\Arrays::flatten($params);
-		$params = implode('|', array_keys($params)) . '|' . implode('|', array_values($params));
-		return substr(md5($control . $method . $params . $session->token . $this->getSession()->getId()), 0, 8);
+		return Helpers::getCsrfToken($this->getSession(), $control, $method, $params);
 	}
 
 }