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<?php
/* Icinga Web 2 | (c) 2020 Icinga GmbH | GPLv2+ */
namespace Icinga\Web\Controller;
use Icinga\Application\Icinga;
use Icinga\Web\Request;
class StaticController
{
/**
* Handle incoming request
*
* @param Request $request
*
* @returns void
*/
public function handle(Request $request)
{
$app = Icinga::app();
// +4 because strlen('/lib') === 4
$assetPath = ltrim(substr($request->getRequestUri(), strlen($request->getBaseUrl()) + 4), '/');
$library = null;
foreach ($app->getLibraries() as $candidate) {
if (substr($assetPath, 0, strlen($candidate->getName())) === $candidate->getName()) {
$library = $candidate;
$assetPath = ltrim(substr($assetPath, strlen($candidate->getName())), '/');
break;
}
}
if ($library === null) {
$app->getResponse()
->setHttpResponseCode(404);
return;
}
$assetRoot = $library->getStaticAssetPath();
if (empty($assetRoot)) {
$app->getResponse()
->setHttpResponseCode(404);
return;
}
$filePath = $assetRoot . DIRECTORY_SEPARATOR . $assetPath;
$dirPath = realpath(dirname($filePath)); // dirname, because the file may be a link
if ($dirPath === false
|| substr($dirPath, 0, strlen($assetRoot)) !== $assetRoot
|| ! is_file($filePath)
) {
$app->getResponse()
->setHttpResponseCode(404);
return;
}
$fileStat = stat($filePath);
$eTag = sprintf(
'%x-%x-%x',
$fileStat['ino'],
$fileStat['size'],
(float) str_pad($fileStat['mtime'], 16, '0')
);
$app->getResponse()->setHeader(
'Cache-Control',
'public, max-age=1814400, stale-while-revalidate=604800',
true
);
if ($request->getServer('HTTP_IF_NONE_MATCH') === $eTag) {
$app->getResponse()
->setHttpResponseCode(304);
} else {
$app->getResponse()
->setHeader('ETag', $eTag)
->setHeader('Content-Type', mime_content_type($filePath), true)
->setHeader('Last-Modified', gmdate('D, d M Y H:i:s', $fileStat['mtime']) . ' GMT')
->setBody(file_get_contents($filePath));
}
}
}
|
