FileController.php

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<?php
namespace TYPO3\CMS\Backend\Controller\File;

use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Backend\Utility\BackendUtility;

class FileController {

    // Internal, static: GPvar:
    // Array of file-operations.
    protected $file;

    // Clipboard operations array
    protected $CB;

    // If existing files should be overridden.
    protected $overwriteExistingFiles;

    // VeriCode - a hash of server specific value and other things which
    // identifies if a submission is OK. (see $GLOBALS['BE_USER']->veriCode())
    protected $vC;

    // the page where the user should be redirected after everything is done
    protected $redirect;

    protected $fileProcessor;

    // the result array from the file processor
    protected $fileData;

    public function __construct() {
        $GLOBALS['SOBE'] = $this;
        $this->init();
    }

    protected function init() {
        // Set the GPvars from outside
        $this->file = GeneralUtility::_GP('file');
        $this->CB = GeneralUtility::_GP('CB');
        $this->overwriteExistingFiles = GeneralUtility::_GP('overwriteExistingFiles');
        $this->vC = GeneralUtility::_GP('vC');
        $this->redirect = GeneralUtility::sanitizeLocalUrl(GeneralUtility::_GP('redirect'));
        $this->initClipboard();
        $this->fileProcessor = GeneralUtility::makeInstance('TYPO3\\CMS\\Core\\Utility\\File\\ExtendedFileUtility');
    }

    public function initClipboard() {
        if (is_array($this->CB)) {
            $clipObj = GeneralUtility::makeInstance('TYPO3\\CMS\\Backend\\Clipboard\\Clipboard');
            $clipObj->initializeClipboard();
            if ($this->CB['paste']) {
                $clipObj->setCurrentPad($this->CB['pad']);
                $this->file = $clipObj->makePasteCmdArray_file($this->CB['paste'], $this->file);
            }
            if ($this->CB['delete']) {
                $clipObj->setCurrentPad($this->CB['pad']);
                $this->file = $clipObj->makeDeleteCmdArray_file($this->file);
            }
        }
    }

    public function main() {
        // Initializing:
        $this->fileProcessor->init(array(), $GLOBALS['TYPO3_CONF_VARS']['BE']['fileExtensions']);
        $this->fileProcessor->setActionPermissions();
        $this->fileProcessor->dontCheckForUnique = $this->overwriteExistingFiles ? 1 : 0;
        // Checking referrer / executing:
        $refInfo = parse_url(GeneralUtility::getIndpEnv('HTTP_REFERER'));
        $httpHost = GeneralUtility::getIndpEnv('TYPO3_HOST_ONLY');
        if ($httpHost != $refInfo['host'] && $this->vC != $GLOBALS['BE_USER']->veriCode() && !$GLOBALS['TYPO3_CONF_VARS']['SYS']['doNotCheckReferer'] && $GLOBALS['CLIENT']['BROWSER'] != 'flash') {
            $this->fileProcessor->writeLog(0, 2, 1, 'Referrer host "%s" and server host "%s" did not match!', array($refInfo['host'], $httpHost));
        } else {
            $this->fileProcessor->start($this->file);
            $this->fileData = $this->fileProcessor->processData();
        }
    }

    public function finish() {
        // Push errors to flash message queue, if there are any
        $this->fileProcessor->pushErrorMessagesToFlashMessageQueue();
        BackendUtility::setUpdateSignal('updateFolderTree');
        if ($this->redirect) {
            \TYPO3\CMS\Core\Utility\HttpUtility::redirect($this->redirect);
        }
    }

    public function processAjaxRequest(array $params, \TYPO3\CMS\Core\Http\AjaxRequestHandler $ajaxObj) {
        $this->init();
        $this->main();
        $errors = $this->fileProcessor->getErrorMessages();
        if (count($errors)) {
            $ajaxObj->setError(implode(',', $errors));
        } else {
            $flatResult = array();
            foreach ($this->fileData as $action => $results) {
                foreach ($results as $result) {
                    if (is_array($result)) {
                        foreach ($result as $subResult) {
                            $flatResult[$action][] = $this->flattenResultDataValue($subResult);
                        }
                    } else {
                        $flatResult[$action][] = $this->flattenResultDataValue($result);
                    }
                }
            }
            $ajaxObj->addContent('result', $flatResult);
            if ($this->redirect) {
                $ajaxObj->addContent('redirect', $this->redirect);
            }
            $ajaxObj->setContentFormat('json');
        }
    }

    protected function flattenResultDataValue($result) {

        if ($result instanceof \TYPO3\CMS\Core\Resource\File) {
            $result = array_merge(
                $result->toArray(),
                array (
                    'date' => BackendUtility::date($result->getModificationTime()),
                    'iconClasses' => \TYPO3\CMS\Backend\Utility\IconUtility::mapFileExtensionToSpriteIconClass($result->getExtension()),
                )
            );
        } elseif ($result instanceof \TYPO3\CMS\Core\Resource\Folder) {
            $result = $result->getIdentifier();
        }

        return $result;
    }
}