Resulting level can be greater than target level if a non-removable buffer has been encountered.
| public static closeOutputBuffers ( integer $targetLevel, boolean $flush ) | ||
| $targetLevel | integer | The target output buffering level |
| $flush | boolean | Whether to flush or clean the buffers |
/**
* @param int $startObLevel
*
* @return string
*/
protected function getAndCleanOutputBuffering($startObLevel)
{
if (ob_get_level() <= $startObLevel) {
return '';
}
Response::closeOutputBuffers($startObLevel + 1, true);
return ob_get_clean();
}
/**
* {@inheritdoc}
*
* Additional available options:
*
* * alt: an alternative URI to render in case of an error
*/
public function render($uri, Request $request, array $options = array())
{
$reference = null;
if ($uri instanceof ControllerReference) {
$reference = $uri;
// Remove attributes from the generated URI because if not, the Symfony
// routing system will use them to populate the Request attributes. We don't
// want that as we want to preserve objects (so we manually set Request attributes
// below instead)
$attributes = $reference->attributes;
$reference->attributes = array();
// The request format and locale might have been overridden by the user
foreach (array('_format', '_locale') as $key) {
if (isset($attributes[$key])) {
$reference->attributes[$key] = $attributes[$key];
}
}
$uri = $this->generateFragmentUri($uri, $request, false, false);
$reference->attributes = array_merge($attributes, $reference->attributes);
}
$subRequest = $this->createSubRequest($uri, $request);
// override Request attributes as they can be objects (which are not supported by the generated URI)
if (null !== $reference) {
$subRequest->attributes->add($reference->attributes);
}
$level = ob_get_level();
try {
return $this->kernel->handle($subRequest, HttpKernelInterface::SUB_REQUEST, false);
} catch (\Exception $e) {
// we dispatch the exception event to trigger the logging
// the response that comes back is simply ignored
if (isset($options['ignore_errors']) && $options['ignore_errors'] && $this->dispatcher) {
$event = new GetResponseForExceptionEvent($this->kernel, $request, HttpKernelInterface::SUB_REQUEST, $e);
$this->dispatcher->dispatch(KernelEvents::EXCEPTION, $event);
}
// let's clean up the output buffers that were created by the sub-request
Response::closeOutputBuffers($level, false);
if (isset($options['alt'])) {
$alt = $options['alt'];
unset($options['alt']);
return $this->render($alt, $request, $options);
}
if (!isset($options['ignore_errors']) || !$options['ignore_errors']) {
throw $e;
}
return new Response();
}
}
/**
* Build a valid AJAX response for in-place saves that account for pre/post
* save events.
*
* @param array $contenttype
* @param integer $id
* @param boolean $flush
*
* @return JsonResponse
*/
private function createJsonUpdate($contenttype, $id, $flush)
{
/*
* Flush any buffers from saveConent() dispatcher hooks
* and make sure our JSON output is clean.
*
* Currently occurs due to exceptions being generated in the dispatchers
* in \Bolt\Storage::saveContent()
* StorageEvents::PRE_SAVE
* StorageEvents::POST_SAVE
*/
if ($flush) {
Response::closeOutputBuffers(0, false);
}
// Get our record after POST_SAVE hooks are dealt with and return the JSON
$content = $this->app['storage']->getContent($contenttype['slug'], ['id' => $id, 'returnsingle' => true, 'status' => '!undefined']);
$val = [];
foreach ($content->values as $key => $value) {
// Some values are returned as \Twig_Markup and JSON can't deal with that
if (is_array($value)) {
foreach ($value as $subkey => $subvalue) {
if (gettype($subvalue) === 'object' && get_class($subvalue) === 'Twig_Markup') {
$val[$key][$subkey] = (string) $subvalue;
}
}
} else {
$val[$key] = $value;
}
}
if (isset($val['datechanged'])) {
$val['datechanged'] = date_format(new \DateTime($val['datechanged']), 'c');
}
$lc = localeconv();
foreach ($contenttype['fields'] as $key => $values) {
switch ($values['type']) {
case 'float':
// Adjust decimal point dependent on locale
if ($lc['decimal_point'] === ',') {
$val[$key] = str_replace('.', ',', $val[$key]);
}
break;
}
}
// Unset flashbag for ajax
$this->app['logger.flash']->clear();
return new JsonResponse($val);
}
/**
* Callback for register_shutdown_function() to handle fatal errors.
*
* @param \Silex\Application $app
* @param boolean $flush
*/
public static function catchFatalErrors(Application $app, $flush = true)
{
if (self::$screen !== null) {
echo self::$screen;
return;
}
// Get last error, if any
$error = error_get_last();
// Let Whoops handle AJAX requested fatal errors
if (isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest') {
return;
}
if ($error['type'] === E_ERROR || $error['type'] === E_PARSE) {
$html = self::$html;
// Flush the early error data buffered output from catchFatalErrorsEarly()
if ($flush) {
Response::closeOutputBuffers(0, false);
}
// Detect if we're being called from a core, an extension or vendor
$isBoltCoreError = strpos($error['file'], $app['resources']->getPath('rootpath/src'));
$isVendorError = strpos($error['file'], $app['resources']->getPath('rootpath/vendor'));
$isExtensionError = strpos($error['file'], $app['resources']->getPath('extensions'));
// Assemble error trace
$errorblock = '<code style="display:block; white-space: pre-wrap;">Error: ' . $error['message'] . '</code><br>';
$errorblock .= '<code>File: ' . $error['file'] . '</code><br>';
$errorblock .= '<code>Line: ' . $error['line'] . '</code><br><br>';
if ($isBoltCoreError === 0) {
$html = str_replace('%error_title%', 'PHP Fatal error: Bolt core', $html);
$html = str_replace('%info%', '', $html);
$message = $errorblock;
} elseif ($isVendorError === 0) {
$html = str_replace('%error_title%', 'PHP Fatal error: Vendor library', $html);
$html = str_replace('%info%', '', $html);
$message = $errorblock;
} elseif ($isExtensionError === 0) {
$base = str_replace($app['resources']->getPath('extensions'), '', $error['file']);
$parts = explode(DIRECTORY_SEPARATOR, ltrim($base, '/'));
$package = $parts[1] . '/' . $parts[2];
$html = str_replace('%error_title%', 'PHP Fatal error: Bolt extensions', $html);
$html = str_replace('%info%', '<p>You will only be able to continue by disabling the extension by adding the following to app/config/extensions.yml:</p>' . '<p><code style="display:block;">' . $parts[1] . ':<br>' . ' ' . $parts[2] . ': false</code></p>', $html);
$message = '<h4>There is a fatal error in the \'' . $package . '\' extension ' . 'loaded on your Bolt Installation.<h4>';
$message .= $errorblock;
} else {
// Unknown
$html = str_replace('%error_title%', 'PHP Fatal error: Bolt generic', $html);
$html = str_replace('%info%', '', $html);
$message = $errorblock;
}
$message = nl2br($message);
$html = str_replace('%error%', $message, $html);
// Determine if we're on the command line. If so, don't output HTML.
if (php_sapi_name() == 'cli') {
$html = self::cleanHTML($html);
}
echo str_replace($app['resources']->getPath('rootpath'), '', $html);
}
echo self::$screen;
}
/**
* Fires `afterCommand` events.
*
* @param FilterResponseEvent $event
*
* @return \Symfony\Component\HttpFoundation\Response|static
*/
public function afterCommand(FilterResponseEvent $event)
{
/* @var $dispatcher EventDispatcher */
$dispatcher = $this['dispatcher'];
$commandName = $event->getRequest()->get('command');
$eventName = CKFinderEvent::AFTER_COMMAND_PREFIX . lcfirst($commandName);
$afterCommandEvent = new AfterCommandEvent($this, $commandName, $event->getResponse());
$dispatcher->dispatch($eventName, $afterCommandEvent);
// #161 Clear any garbage from the output
Response::closeOutputBuffers(0, false);
$event->setResponse($afterCommandEvent->getResponse());
}
/**
* Build a valid AJAX response for in-place saves that account for pre/post
* save events.
*
* @param Content $content
* @param boolean $flush
*
* @return JsonResponse
*/
private function createJsonUpdate(Content $content, $flush)
{
/*
* Flush any buffers from saveConent() dispatcher hooks
* and make sure our JSON output is clean.
*
* Currently occurs due to exceptions being generated in the dispatchers
* in \Bolt\Storage::saveContent()
* StorageEvents::PRE_SAVE
* StorageEvents::POST_SAVE
*/
if ($flush) {
Response::closeOutputBuffers(0, false);
}
$val = $content->toArray();
if (isset($val['datechanged'])) {
$val['datechanged'] = (new Carbon($val['datechanged']))->toIso8601String();
}
// Adjust decimal point as some locales use a comma and… JavaScript
$lc = localeconv();
$fields = $this->app['config']->get('contenttypes/' . $content->getContenttype() . '/fields');
foreach ($fields as $key => $values) {
if ($values['type'] === 'float' && $lc['decimal_point'] === ',') {
$val[$key] = str_replace('.', ',', $val[$key]);
}
}
// Unset flashbag for ajax
$this->app['logger.flash']->clear();
return new JsonResponse($val);
}
/**
* {@inheritdoc}
*/
public function terminate(Request $request, Response $response)
{
if (false === $this->booted) {
return;
}
if ($this->getHttpKernel() instanceof TerminableInterface) {
if (!$this->debug) {
if (function_exists('fastcgi_finish_request')) {
fastcgi_finish_request();
} elseif ('cli' !== PHP_SAPI) {
Response::closeOutputBuffers(0, true);
}
}
$this->getHttpKernel()->terminate($request, $response);
}
}
/**
* Extends the execution time of the script
*
* @param int $currentTime current timestamp
*/
protected function extendExecutionTime($currentTime)
{
if ($currentTime - $this->lastExtendExecutionTime >= self::EXTEND_EXECUTION_INTERVAL) {
set_time_limit(30);
$this->lastExtendExecutionTime = $currentTime;
// Emit some whitespaces for Nginx + FPM configuration to avoid 504 Gateway Timeout error
if (function_exists('fastcgi_finish_request')) {
// Clear the buffer to remove any garbage before flushing
Response::closeOutputBuffers(0, false);
echo ' ';
@ob_end_flush();
@flush();
}
}
}
