Mage_Connect_Packager::processInstallPackageFtp PHP Method

    public function processInstallPackageFtp($package, $file, $configObj, $ftp)
    {
        $ftpDir = $ftp->getcwd();
        $contents = $package->getContents();
        $arc = $this->getArchiver();
        $target = dirname($file) . DS . $package->getReleaseFilename();
        @mkdir($target, 0777, true);
        $mode = $configObj->global_dir_mode;
        $tar = $arc->unpack($file, $target);
        $modeFile = $configObj->global_file_mode;
        $modeDir = $configObj->global_dir_mode;
        foreach ($contents as $file) {
            $fileName = basename($file);
            $filePath = $this->convertFtpPath(dirname($file));
            $source = $tar . DS . $file;
            if (file_exists($source) && is_file($source)) {
                $args = array(ltrim($file, "/"), $source);
                if ($modeDir) {
                    $args[] = $modeDir;
                }
                call_user_func_array(array($ftp, 'upload'), $args);
            }
        }
        $ftp->chdir($ftpDir);
        Mage_System_Dirs::rm(array("-r", $target));
    }