servnest/init.php

<?php declare(strict_types=1);
umask(0077);
const LF = "\n";

class KdigException extends Exception {};
class NoDnssecException extends Exception {};
set_error_handler(function ($level, $message, $file = '', $line = 0) {
	throw new ErrorException($message, 0, $level, $file, $line);
});
set_exception_handler(function ($e) {
	error_log((string) $e);
	if (http_response_code() !== false)
		http_response_code(500);
	echo '<h1>Error</h1><p>An error occured.</p>' . LF;
});
register_shutdown_function(function () { // Also catch fatal errors
	if (($error = error_get_last()) !== NULL)
		throw new ErrorException($error['message'], 0, $error['type'], $error['file'], $error['line']);
});

const ROOT_PATH = __DIR__;
define('CONF', parse_ini_file(ROOT_PATH . '/config.ini', true, INI_SCANNER_TYPED));

define('DB', new PDO('sqlite:' . ROOT_PATH . '/db/servnest.db'));
DB->exec('PRAGMA foreign_keys = ON;');
DB->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

date_default_timezone_set('UTC');

foreach (explode(',', preg_replace('/[A-Z0-9]|q=|;|-|\./', '', $_SERVER['HTTP_ACCEPT_LANGUAGE'] ?? '')) as $client_locale)
	if (in_array($client_locale, array_diff(scandir(ROOT_PATH . '/locales'), ['..', '.']), true)) {
		$locale = $client_locale;
		break;
	}
define('LOCALE', $locale ?? 'en');
putenv('LANG=C.UTF-8');
setlocale(LC_MESSAGES, 'C.UTF-8');
bindtextdomain('messages', ROOT_PATH . '/locales/' . LOCALE);
header('Content-Language: ' . LOCALE);

const SERVICES_USER = ['reg', 'ns', 'ht'];

const PLACEHOLDER_DOMAIN = 'example'; // From RFC2606: Reserved Top Level DNS Names > 2. TLDs for Testing, & Documentation Examples
const PLACEHOLDER_IPV6 = '2001:db8::3'; // From RFC3849: IPv6 Address Prefix Reserved for Documentation
const PLACEHOLDER_IPV4 = '203.0.113.42'; // From RFC5737: IPv4 Address Blocks Reserved for Documentation

foreach (array_diff(scandir(ROOT_PATH . '/fn'), ['..', '.']) as $file)
	require ROOT_PATH . '/fn/' . $file;

require ROOT_PATH . '/pages.php';