fileinputreceiver.php

<?php
 
namespace Bitrix\Main\UI;
 
use Bitrix\Main\AccessDeniedException;
use Bitrix\Main\Localization\Loc;
use Bitrix\Main\Security\Sign\Signer;
use Bitrix\Main\UI\Uploader\Uploader;
 
class FileInputReceiver
{
    protected $status = array();
    protected $id = "unknown";
    protected $uploader;
 
    const STATUS_SUCCESS      = 'success';
    const STATUS_DENIED       = 'denied';
    const STATUS_ERROR        = 'error';
    const STATUS_NEED_AUTH    = 'need_auth';
    const STATUS_INVALID_SIGN = 'invalid_sign';
 
    function __construct($signature)
    {
        global $USER;
 
        if (!$USER->IsAuthorized())
            throw new AccessDeniedException(Loc::getMessage("BXU_AccessDenied_Authorize"));
 
        $sign = new Signer;
        $params = unserialize(base64_decode($sign->unsign($signature, "fileinput")), ["allowed_classes" => false]);
        $this->id = $params["id"];
 
        $this->uploader = new Uploader($params);
        $this->uploader->setHandler("onFileIsUploaded", array($this, "handleFile"));
    }
    protected function getAgent()
    {
        return $this->uploader;
    }
 
    public static function sign($params = array())
    {
        $sign = new Signer();
        return $sign->sign(base64_encode(serialize($params)), "fileinput");
    }
 
 
    protected static function handleFileByPath(&$file)
    {
        $key = "default";
 
        $docRoot = \CBXVirtualIo::GetInstance()->CombinePath(\CTempFile::GetAbsoluteRoot());
        $file["files"][$key]["path"] = \CBXVirtualIo::GetInstance()->GetFile($file["files"][$key]["tmp_name"])->GetPathWithName();
        if (mb_strpos($file["files"][$key]["path"], $docRoot) === 0)
            $file["files"][$key]["path"] = str_replace("//", "/", "/".mb_substr($file["files"][$key]["path"], mb_strlen($docRoot)));
 
        $file["files"][$key]["tmp_url"] = $file["files"][$key]["url"];
        $file["type"] = $file["files"][$key]["type"];
 
        return true;
    }
 
    protected static function handleFileByHash($hash, &$file)
    {
        $file["uploadId"] = $hash;
        return true;
    }
 
    public function handleFile($hash, &$file)
    {
        if ($this->id == "path")
        {
            return self::handleFileByPath($file);
        }
        return self::handleFileByHash($hash, $file);
    }
 
    public function exec()
    {
        $this->getAgent()->checkPost();
    }
}