wcfsetup/install/files/lib/action/FileUploadPreflightAction.class.php

   1 <?php
   2
   3 namespace wcf\action;
   4
   5 use Laminas\Diactoros\Response\JsonResponse;
   6 use Psr\Http\Message\ResponseInterface;
   7 use Psr\Http\Message\ServerRequestInterface;
   8 use Psr\Http\Server\RequestHandlerInterface;
   9 use wcf\data\file\temporary\FileTemporary;
  10 use wcf\data\file\temporary\FileTemporaryAction;
  11 use wcf\http\Helper;
  12 use wcf\system\request\LinkHandler;
  13
  14 final class FileUploadPreflightAction implements RequestHandlerInterface
  15 {
  16     public function handle(ServerRequestInterface $request): ResponseInterface
  17     {
  18         // TODO: For now we only require the filename and size to be provided.
  19         $parameters = Helper::mapQueryParameters(
  20             $request->getParsedBody(),
  21             <<<'EOT'
  22                     array {
  23                         filename: non-empty-string,
  24                         fileSize: positive-int,
  25                         fileHash: non-empty-string,
  26                     }
  27                     EOT,
  28         );
  29
  30         $fileTemporary = $this->createTemporaryFile($parameters);
  31         $numberOfChunks = $fileTemporary->getNumberOfChunks();
  32
  33         $endpoints = [];
  34         for ($i = 0; $i < $numberOfChunks; $i++) {
  35             $endpoints[] = LinkHandler::getInstance()->getControllerLink(
  36                 FileUploadAction::class,
  37                 [
  38                     'identifier' => $fileTemporary->identifier,
  39                     'sequenceNo' => $i,
  40                 ]
  41             );
  42         }
  43
  44         return new JsonResponse([
  45             'endpoints' => $endpoints,
  46         ]);
  47     }
  48
  49     private function createTemporaryFile(array $parameters): FileTemporary
  50     {
  51         $identifier = \bin2hex(\random_bytes(20));
  52
  53         $action = new FileTemporaryAction([], 'create', [
  54             'data' => [
  55                 'identifier' => $identifier,
  56                 'time' => \TIME_NOW,
  57                 'filename' => $parameters['filename'],
  58                 'fileSize' => $parameters['fileSize'],
  59                 'fileHash' => $parameters['fileHash'],
  60             ],
  61         ]);
  62
  63         return $action->executeAction()['returnValues'];
  64     }
  65 }