public function handle(Event $event, Response $response)
{
if (HttpKernelInterface::MASTER_REQUEST !== $event->getParameter('request_type')) {
return $response;
}
$request = $event->getParameter('request');
if ('3' === substr($response->getStatusCode(), 0, 1) || $response->headers->has('Content-Type') && false === strpos($response->headers->get('Content-Type'), 'html') || 'html' !== $request->getRequestFormat() || $request->isXmlHttpRequest()) {
return $response;
}
$response->setContent($this->injectToolbar($request, $response));
return $response;
}
/**
* Replaces a Response ESI tags with the included resource content.
*
* @param Symfony\Components\HttpFoundation\Request $request A Request instance
* @param Symfony\Components\HttpFoundation\Response $response A Response instance
*/
public function process(Request $request, Response $response)
{
$this->request = $request;
$type = $response->headers->get('Content-Type');
if (empty($type)) {
$type = 'text/html';
}
if (!in_array($type, $this->contentTypes)) {
return $response;
}
// we don't use a proper XML parser here as we can have ESI tags in a plain text response
$content = $response->getContent();
$content = preg_replace_callback('#<esi\\:include\\s+(.+?)\\s*/>#', array($this, 'handleEsiIncludeTag'), $content);
$content = preg_replace('#<esi\\:comment[^>]*/>#', '', $content);
$content = preg_replace('#<esi\\:remove>.*?</esi\\:remove>#', '', $content);
$response->setContent($content);
$response->headers->set('X-Body-Eval', 'ESI');
// remove ESI/1.0 from the Surrogate-Control header
$value = $response->headers->get('Surrogate-Control');
if (preg_match('#^content="ESI/1.0"$#', $value)) {
$response->headers->delete('Surrogate-Control');
} else {
$response->headers->set('Surrogate-Control', preg_replace('#ESI/1.0#', '', $value));
}
}
/**
* Restores the Response body.
*
* @param Symfony\Components\HttpFoundation\Response $response A Response instance
*
* @return Symfony\Components\HttpFoundation\Response A Response instance
*/
protected function restoreResponseBody(Response $response)
{
if ($response->headers->has('X-Body-Eval')) {
ob_start();
if ($response->headers->has('X-Body-File')) {
include $response->headers->get('X-Body-File');
} else {
eval('; ?>' . $response->getContent() . '<?php ;');
}
$response->setContent(ob_get_clean());
$response->headers->delete('X-Body-Eval');
} elseif ($response->headers->has('X-Body-File')) {
$response->setContent(file_get_contents($response->headers->get('X-Body-File')));
} else {
return;
}
$response->headers->delete('X-Body-File');
if (!$response->headers->has('Transfer-Encoding')) {
$response->headers->set('Content-Length', strlen($response->getContent()));
}
}
