UpgradeGatekeeper.php

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<?php
 
namespace Elgg\Router\Middleware;
 
use Elgg\Http\ResponseBuilder;
use Elgg\Exceptions\Http\Gatekeeper\UpgradeGatekeeperException;
 
class UpgradeGatekeeper {
 
    public function __invoke(\Elgg\Request $request) {
 
        if (elgg_is_admin_logged_in()) {
            return null;
        }
 
        if (!_elgg_services()->config->security_protect_upgrade) {
            return null;
        }
 
        $url = $request->getURL();
        if (!_elgg_services()->urlSigner->isValid($url)) {
            throw new UpgradeGatekeeperException();
        }
    }
}