/**
* Receives a new deployed services package to upgrade the running version
*
* @return void
*/
private function upgradeServices()
{
if (isset($this->request['package']) === false) {
return;
}
$this->request['package'] = \Output::decodeWireObject($this->request['package']);
/**
* Confirm authenticity with origin before upgrading.
*/
$checksum = hash('sha1', $this->request['package']);
if (\OriginRequest::validateDeployedPackage($checksum, $this->request['timestamp']) !== true) {
\Output::render404();
}
$upgradeDir = \BASE_DOCROOT_DIR . '/w_api_upgrade/';
if (mkdir($upgradeDir) !== true) {
\Output::sendHeader($_SERVER['SERVER_PROTOCOL'] . ' 500 Internal Server Error');
}
file_put_contents($upgradeDir . 'w_api.zip', $this->request['package']);
$zip = new \ZipArchive();
if ($zip->open($upgradeDir . 'w_api.zip', \ZipArchive::CHECKCONS) !== true) {
/**
* Bad archive -- do not upgrade
*/
$zip->close();
return;
}
if ($zip->extractTo($upgradeDir) !== true) {
$zip->close();
return;
}
foreach (scandir($upgradeDir . '/w_api/') as $file) {
if (strpos($file, '.php') !== false) {
if (unlink(\BASE_SERVICES_DIR . $file) === false) {
/**
* Can't upgrade these services due to permissions errors, looks like
*/
$failure = true;
break;
}
file_put_contents(\BASE_SERVICES_DIR . $file, file_get_contents($upgradeDir . '/w_api/' . $file));
unlink($upgradeDir . '/w_api/' . $file);
}
}
\FileSystem::deleteTree($upgradeDir);
$zip->close();
if (isset($failure) === true) {
\Output::sendHeader($_SERVER['SERVER_PROTOCOL'] . ' 500 Internal Server Error');
}
}
/**
* Unzips the content from a given object resource
*
* @param string $object
*
* @return bool
*/
public static function expandObject($object)
{
if (isset($object) === false) {
return false;
}
/**
* Create a fairly random place to drop this in -- it'll get removed at the end of execution anyway
*/
$path = \BASE_DOCROOT_DIR . md5(rand(0, 999)) . '.zip';
/**
* Object should be "prop-up" ready, with a path that reflects where it should live on disk
* from a relative path of the client webroot
*/
$object = file_put_contents($path, \Output::decodeWireObject($object));
$zip = new \ZipArchive();
if ($zip->open($path, \ZipArchive::CHECKCONS) !== true) {
unlink($path);
$zip->close();
return false;
}
/**
* The @ symbol here is awful, but it's even more important that we don't throw a Warning on the extractTo if it fails
* The early Warning shown causes any further rendering to get lost, because we've already started sending headers
*/
if (@$zip->extractTo(\BASE_DOCROOT_DIR) !== true) {
/**
* Something has gone really wrong -- send a 500.
*/
\Output::sendHeader($_SERVER['SERVER_PROTOCOL'] . ' 500 Internal Server Error');
unlink($path);
$zip->close();
throw new \Exception('Could not expand our origin object');
}
unlink($path);
$zip->close();
return true;
}
/**
* Handles a response from Origin, generally the last item in the lifecycle of a request
*
* @param mixed $response
*
* @return void
*/
private function handleOriginResponse($response)
{
/**
* Origin didn't have the object
*/
if ($response === false) {
\Output::render404();
}
/**
* We're good to go, start rendering
*/
\Output::sendHeader($_SERVER['SERVER_PROTOCOL'] . ' 200 OK');
/**
* Origin had the object, and it's now stored on disk, render the stored object
*/
if ($response === true) {
if (isset($_COOKIE['is_redirecting']) === true) {
sleep(2);
}
\setcookie('is_redirecting', 1, time() + 5);
\Output::sendHeader('Location: ' . $this->request['path']);
$this->isRedirect = true;
}
if (is_object($response) === true) {
/**
* It's a streaming object, so we'll render it from here
*/
\Output::sendHeader($_SERVER['SERVER_PROTOCOL'] . ' 200 OK');
\Output::render(\Output::decodeWireObject($response->object));
}
}
