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<?php
class admin {
const SESSION_TIMEOUT = 86400 * 14;
const COOKIE_NAME = 'admin_key';
protected static ?bool $isAdmin = null;
public static function isAdmin(): bool {
if (is_null(self::$isAdmin))
self::$isAdmin = self::_verifyKey();
return self::$isAdmin;
}
protected static function _verifyKey(): bool {
if (isset($_COOKIE[self::COOKIE_NAME])) {
$cookie = (string)$_COOKIE[self::COOKIE_NAME];
if ($cookie !== self::getKey())
self::unsetCookie();
return true;
}
return false;
}
public static function checkPassword(string $pwd): bool {
return salt_password($pwd) === config::get('admin_pwd');
}
protected static function getKey(): string {
global $config;
$admin_pwd_hash = config::get('admin_pwd');
return salt_password("$admin_pwd_hash|{$_SERVER['REMOTE_ADDR']}");
}
public static function setCookie(): void {
global $config;
$key = self::getKey();
setcookie(self::COOKIE_NAME, $key, time() + self::SESSION_TIMEOUT, '/', $config['cookie_host']);
}
public static function unsetCookie(): void {
global $config;
setcookie(self::COOKIE_NAME, '', 1, '/', $config['cookie_host']);
}
public static function logAuth(): void {
getDb()->insert('admin_log', [
'ts' => time(),
'ip' => ip2ulong($_SERVER['REMOTE_ADDR']),
'ua' => $_SERVER['HTTP_USER_AGENT'] ?? '',
]);
}
}
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