Convert bad request exceptions to 400 responses

Author: Seldaek

src/EventListener/BadRequestExceptionListener.php

@@ -0,0 +1,38 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of Packagist.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *     Nils Adermann <naderman@naderman.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\EventListener;
+
+use Symfony\Component\EventDispatcher\Attribute\AsEventListener;
+use Symfony\Component\HttpKernel\Event\ExceptionEvent;
+use Symfony\Component\HttpFoundation\Exception\BadRequestException;
+use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
+use Twig\Error\RuntimeError;
+
+/**
+ * Converts BadRequestException to BadRequestHttpException
+ */
+class BadRequestExceptionListener
+{
+    #[AsEventListener(priority: 1000)]
+    public function onKernelException(ExceptionEvent $event): void
+    {
+        $exception = $event->getThrowable();
+
+        if ($exception instanceof RuntimeError) {
+            $exception = $exception->getPrevious();
+        }
+        if ($exception instanceof BadRequestException) {
+            $event->setThrowable(new BadRequestHttpException($exception->getMessage(), $exception));
+        }
+    }
+}