3 files changed, 91 insertions, 13 deletions
diff --git a/phpBB/phpbb/event/dispatcher.php b/phpBB/phpbb/event/dispatcher.php
index 9a786022c2..1c4abeb108 100644
--- a/phpBB/phpbb/event/dispatcher.php
+++ b/phpBB/phpbb/event/dispatcher.php
@@ -14,6 +14,7 @@
 namespace phpbb\event;
 
 use Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher;
+use Symfony\Component\EventDispatcher\Event;
 
 /**
 * Extension of the Symfony2 EventDispatcher
@@ -32,6 +33,11 @@ use Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher;
 class dispatcher extends ContainerAwareEventDispatcher implements dispatcher_interface
 {
 	/**
+	 * @var bool
+	 */
+	protected $disabled = false;
+
+	/**
 	* {@inheritdoc}
 	*/
 	public function trigger_event($eventName, $data = array())
@@ -40,4 +46,33 @@ class dispatcher extends ContainerAwareEventDispatcher implements dispatcher_int
 		$this->dispatch($eventName, $event);
 		return $event->get_data_filtered(array_keys($data));
 	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function dispatch($eventName, Event $event = null)
+	{
+		if ($this->disabled)
+		{
+			return $event;
+		}
+
+		return parent::dispatch($eventName, $event);
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function disable()
+	{
+		$this->disabled = true;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function enable()
+	{
+		$this->disabled = false;
+	}
 }
diff --git a/phpBB/phpbb/event/dispatcher_interface.php b/phpBB/phpbb/event/dispatcher_interface.php
index 50a3ef9101..c66aa98260 100644
--- a/phpBB/phpbb/event/dispatcher_interface.php
+++ b/phpBB/phpbb/event/dispatcher_interface.php
@@ -37,4 +37,14 @@ interface dispatcher_interface extends \Symfony\Component\EventDispatcher\EventD
 	* @return mixed
 	*/
 	public function trigger_event($eventName, $data = array());
+
+	/**
+	 * Disable the event dispatcher.
+	 */
+	public function disable();
+
+	/**
+	 * Enable the event dispatcher.
+	 */
+	public function enable();
 }
diff --git a/phpBB/phpbb/event/kernel_exception_subscriber.php b/phpBB/phpbb/event/kernel_exception_subscriber.php
index 44e87507f9..eb7831ad34 100644
--- a/phpBB/phpbb/event/kernel_exception_subscriber.php
+++ b/phpBB/phpbb/event/kernel_exception_subscriber.php
@@ -14,9 +14,10 @@
 namespace phpbb\event;
 
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
 use Symfony\Component\HttpKernel\KernelEvents;
 use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
-use Symfony\Component\HttpKernel\Exception\HttpException;
 use Symfony\Component\HttpFoundation\Response;
 
 class kernel_exception_subscriber implements EventSubscriberInterface
@@ -53,23 +54,55 @@ class kernel_exception_subscriber implements EventSubscriberInterface
 	*/
 	public function on_kernel_exception(GetResponseForExceptionEvent $event)
 	{
-		page_header($this->user->lang('INFORMATION'));
-
 		$exception = $event->getException();
 
-		$this->template->assign_vars(array(
-			'MESSAGE_TITLE'		=> $this->user->lang('INFORMATION'),
-			'MESSAGE_TEXT'		=> $exception->getMessage(),
-		));
+		$message = $exception->getMessage();
+
+		if ($exception instanceof \phpbb\exception\exception_interface)
+		{
+			$message = call_user_func_array(array($this->user, 'lang'), array_merge(array($message), $exception->get_parameters()));
+		}
+
+		if (!$event->getRequest()->isXmlHttpRequest())
+		{
+			page_header($this->user->lang('INFORMATION'));
+
+			$this->template->assign_vars(array(
+				'MESSAGE_TITLE' => $this->user->lang('INFORMATION'),
+				'MESSAGE_TEXT'  => $message,
+			));
+
+			$this->template->set_filenames(array(
+				'body' => 'message_body.html',
+			));
+
+			page_footer(true, false, false);
+
+			$response = new Response($this->template->assign_display('body'), 500);
+		}
+		else
+		{
+			$data = array();
+
+			if (!empty($message))
+			{
+				$data['message'] = $message;
+			}
+
+			if (defined('DEBUG'))
+			{
+				$data['trace'] = $exception->getTrace();
+			}
 
-		$this->template->set_filenames(array(
-			'body'	=> 'message_body.html',
-		));
+			$response = new JsonResponse($data, 500);
+		}
 
-		page_footer(true, false, false);
+		if ($exception instanceof HttpExceptionInterface)
+		{
+			$response->setStatusCode($exception->getStatusCode());
+			$response->headers->add($exception->getHeaders());
+		}
 
-		$status_code = $exception instanceof HttpException ? $exception->getStatusCode() : 500;
-		$response = new Response($this->template->assign_display('body'), $status_code);
 		$event->setResponse($response);
 	}