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<?php
/**
* Output plugin assets
*
* This will load and output plugin assets. For now, this will be the
* compiled LESS files of plugins.
* All served assets will set the appropriate headers so that the browser
* will cache the assets for a certain amount of time.
*
* @author Jan-Hendrik Willms <tleilax+studip@gmail.com>
* @license GPL2 or any later version
* @since Stud.IP 3.4
*/
require_once '../lib/bootstrap.php';
// Obtain request information
$uri = ltrim($_SERVER['PATH_INFO'], '/');
list($type, $id) = explode('/', $uri, 2);
// Setup response
$response = new Trails_Response();
// Create response
if (!$type || !$id) {
// Invalid call
$response->set_status(400);
} elseif (!in_array($type, ['css', 'js'])) {
// Invalid type
$response->set_status(501);
} elseif (!PluginAsset::exists($id)) {
// Asset does not exist
$response->set_status(404);
} else {
// Load asset
$model = PluginAsset::find($id);
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && $model->chdate <= strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
// Cached and still valid
$response->set_status(304);
} else {
// Output asset
$asset = new Assets\PluginAsset($model);
try {
$response->set_body($asset->getContent());
// Set appropriate header
$response->add_header('Content-Type', $type === 'css' ? 'text/css' : 'application/javascript');
$response->add_header('Content-Length', $model->size);
$response->add_header('Content-Disposition', 'inline; ' . encode_header_parameter('filename', $model->filename));
// Store cache information
if (Studip\ENV !== 'development') {
$response->add_header('Last-Modified', gmdate('D, d M Y H:i:s', $model->chdate) . ' GMT');
$response->add_header('Expires', gmdate('D, d M Y H:i:s', $model->chdate + PluginAsset::CACHE_DURATION) . ' GMT');
}
} catch (Exception $e) {
$asset->delete();
$response->set_status(500);
}
}
}
$response->output();
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