Added CSRF Extender (#2095)

src/Http/HttpServiceProvider.php

@@ -0,0 +1,29 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Flarum\Http;
+
+use Flarum\Foundation\AbstractServiceProvider;
+
+class HttpServiceProvider extends AbstractServiceProvider
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function register()
+    {
+        $this->app->singleton('flarum.http.csrfExemptPaths', function () {
+            return ['/api/token'];
+        });
+
+        $this->app->bind(Middleware\CheckCsrfToken::class, function ($app) {
+            return new Middleware\CheckCsrfToken($app->make('flarum.http.csrfExemptPaths'));
+        });
+    }
+}