zhamao-framework/src/ZM/Http/StaticFileHandler.php

<?php

declare(strict_types=1);

namespace ZM\Http;

use ZM\Config\ZMConfig;
use ZM\Console\Console;
use ZM\Utils\HttpUtil;

class StaticFileHandler
{
    public function __construct($filename, $path)
    {
        $full_path = realpath($path . '/' . $filename);
        $response = ctx()->getResponse();
        Console::debug('Full path: ' . $full_path);
        if ($full_path !== false) {
            if (strpos($full_path, $path) !== 0) {
                $response->status(403);
                $response->end('403 Forbidden');
                return;
            }
            if (is_file($full_path)) {
                $exp = strtolower(pathinfo($full_path)['extension'] ?? 'unknown');
                $response->setHeader('Content-Type', ZMConfig::get('file_header')[$exp] ?? 'application/octet-stream');
                $response->end(file_get_contents($full_path));
                return;
            }
        }
        $response->status(404);
        $response->end(HttpUtil::getHttpCodePage(404));
    }
}