BookStack/app/Http/Middleware
..
ApiAuthenticate.php
Authenticate.php
CheckForMaintenanceMode.php
ChecksForEmailConfirmation.php
EncryptCookies.php
GlobalViewData.php
Localization.php
PermissionMiddleware.php
RedirectIfAuthenticated.php
StartSessionIfCookieExists.php
ThrottleApiRequests.php
TrimStrings.php
TrustProxies.php
VerifyCsrfToken.php