75 lines
2.3 KiB
PHP
75 lines
2.3 KiB
PHP
<?php
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/**
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* Plugin Asset handler
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*
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* Serves plugin assets (CSS, JS, images, fonts, etc.) securely by validating the
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* requested plugin name, asset path and enabled status. This way each plugin can
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* keep its assets in its local folders and only load them when needed.
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*/
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require_once __DIR__ . '/../classes/session.php';
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$pluginName = $_GET['plugin'] ?? '';
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$assetPath = $_GET['path'] ?? '';
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$sendError = static function(int $code, string $message): void {
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http_response_code($code);
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header('Content-Type: text/plain');
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exit($message);
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};
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if ($pluginName === '' || !preg_match('/^[a-zA-Z0-9_-]+$/', $pluginName)) {
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$sendError(400, 'Invalid plugin specified');
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}
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if ($assetPath === '') {
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$sendError(400, 'No asset path specified');
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}
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if (!preg_match('/^[a-zA-Z0-9_\-.\/]+$/', $assetPath) || strpos($assetPath, '..') !== false) {
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$sendError(400, 'Invalid asset path');
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}
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if (!isset($GLOBALS['enabled_plugins'][$pluginName])) {
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$sendError(404, 'Plugin not enabled');
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}
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$pluginsRoot = realpath(dirname(__DIR__, 2) . '/plugins');
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if ($pluginsRoot === false) {
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$sendError(500, 'Plugins directory missing');
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}
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$pluginBase = realpath($pluginsRoot . '/' . $pluginName);
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if ($pluginBase === false || strpos($pluginBase, $pluginsRoot) !== 0) {
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$sendError(404, 'Plugin not found');
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}
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$fullPath = realpath($pluginBase . '/' . ltrim($assetPath, '/'));
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if ($fullPath === false || strpos($fullPath, $pluginBase) !== 0 || !is_file($fullPath) || !is_readable($fullPath)) {
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$sendError(404, 'Asset not found');
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}
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$extension = strtolower(pathinfo($fullPath, PATHINFO_EXTENSION));
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$contentTypes = [
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'css' => 'text/css',
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'js' => 'application/javascript',
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'json' => 'application/json',
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'png' => 'image/png',
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'jpg' => 'image/jpeg',
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'jpeg' => 'image/jpeg',
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'gif' => 'image/gif',
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'svg' => 'image/svg+xml',
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'webp' => 'image/webp',
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'woff' => 'font/woff',
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'woff2'=> 'font/woff2',
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'ttf' => 'font/ttf',
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'eot' => 'application/vnd.ms-fontobject'
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];
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header('Content-Type: ' . ($contentTypes[$extension] ?? 'application/octet-stream'));
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header('Content-Length: ' . filesize($fullPath));
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header('Cache-Control: public, max-age=86400');
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header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 86400) . ' GMT');
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readfile($fullPath);
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