1 files changed, 40 insertions, 0 deletions
diff --git a/src/Renderer/Twig/Extensions/Authentication.php b/src/Renderer/Twig/Extensions/Authentication.php
new file mode 100644
index 00000000..6a72d825
--- /dev/null
+++ b/src/Renderer/Twig/Extensions/Authentication.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace Engelsystem\Renderer\Twig\Extensions;
+
+use Twig_Extension as TwigExtension;
+use Twig_Function as TwigFunction;
+
+class Authentication extends TwigExtension
+{
+    /**
+     * @return TwigFunction[]
+     */
+    public function getFunctions()
+    {
+        return [
+            new TwigFunction('is_user', [$this, 'isAuthenticated']),
+            new TwigFunction('is_guest', [$this, 'isGuest']),
+            new TwigFunction('has_permission_to', [$this, 'checkAuth']),
+        ];
+    }
+
+    public function isAuthenticated()
+    {
+        global $user;
+
+        return !empty($user);
+    }
+
+    public function isGuest()
+    {
+        return !$this->isAuthenticated();
+    }
+
+    public function checkAuth($privilege)
+    {
+        global $privileges;
+
+        return in_array($privilege, $privileges);
+    }
+}