flexisip-account-manager/flexiapi/app/Http/Middleware/Space.php

<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Config;
use Symfony\Component\HttpFoundation\Response;

class Space
{
    public function handle(Request $request, Closure $next): Response
    {
        if (empty(config('app.root_domain'))) {
            return abort(503, 'APP_ROOT_DOMAIN is not configured');
        }

        $space = \App\Space::where('host', $request->header('host'))->first();

        if ($space) {
            if (!str_ends_with($space->host, config('app.root_domain'))) {
                return abort(503, 'The APP_ROOT_DOMAIN configured does not match with the current root domain');
            }

            Config::set('app.url', '://' . $space->host);
            Config::set('app.sip_domain', $space->domain);

            $request->request->set('resolvedSpace', $space);

            return $next($request);
        }

        return abort(404, 'Host not configured');
    }
}