misc_pterodactyl-panel/app/Http/Controllers/Api/Client/Servers/WebsocketController.php

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<?php
namespace Pterodactyl\Http\Controllers\Api\Client\Servers;
use Cake\Chronos\Chronos;
use Lcobucci\JWT\Builder;
use Illuminate\Http\Request;
use Lcobucci\JWT\Signer\Key;
use Illuminate\Http\Response;
use Pterodactyl\Models\Server;
use Illuminate\Http\JsonResponse;
use Lcobucci\JWT\Signer\Hmac\Sha256;
use Illuminate\Contracts\Cache\Repository;
use Symfony\Component\HttpKernel\Exception\HttpException;
use Pterodactyl\Http\Controllers\Api\Client\ClientApiController;
class WebsocketController extends ClientApiController
{
/**
* @var \Illuminate\Contracts\Cache\Repository
*/
private $cache;
/**
* WebsocketController constructor.
*
* @param \Illuminate\Contracts\Cache\Repository $cache
*/
public function __construct(Repository $cache)
{
parent::__construct();
$this->cache = $cache;
}
/**
* Generates a one-time token that is sent along in every websocket call to the Daemon.
* This is a signed JWT that the Daemon then uses the verify the user's identity, and
* allows us to continually renew this token and avoid users mainitaining sessions wrongly,
* as well as ensure that user's only perform actions they're allowed to.
*
* @param \Illuminate\Http\Request $request
* @param \Pterodactyl\Models\Server $server
* @return \Illuminate\Http\JsonResponse
*/
public function __invoke(Request $request, Server $server)
{
if (! $request->user()->can('connect-to-ws', $server)) {
throw new HttpException(
Response::HTTP_FORBIDDEN, 'You do not have permission to connect to this server\'s websocket.'
);
}
$now = Chronos::now();
$signer = new Sha256;
$token = (new Builder)->issuedBy(config('app.url'))
->permittedFor($server->node->getConnectionAddress())
->identifiedBy(hash('sha256', $request->user()->id . $server->uuid), true)
->issuedAt($now->getTimestamp())
->canOnlyBeUsedAfter($now->getTimestamp())
->expiresAt($now->addMinutes(15)->getTimestamp())
->withClaim('user_id', $request->user()->id)
->withClaim('server_uuid', $server->uuid)
->getToken($signer, new Key($server->node->daemonSecret));
$socket = str_replace(['https://', 'http://'], ['wss://', 'ws://'], $server->node->getConnectionAddress());
return JsonResponse::create([
'data' => [
'token' => $token->__toString(),
'socket' => $socket . sprintf('/api/servers/%s/ws', $server->uuid),
],
]);
}
}