public ActionResult InstallLocally(string redirectUrl) {
            if (_shellSettings.Name != ShellSettings.DefaultName || !Services.Authorizer.Authorize(StandardPermissions.SiteOwner, T("Not authorized to install packages")))
                return new HttpUnauthorizedResult();

            var httpPostedFileBase = Request.Files.Get(0);
            if (httpPostedFileBase == null 
                || Request.Files.Count == 0 
                || string.IsNullOrWhiteSpace(httpPostedFileBase.FileName)) {

                throw new OrchardException(T("Select a file to upload."));
            }
            try {
                string fullFileName = Path.Combine(_appDataFolderRoot.RootFolder, Path.GetFileName(httpPostedFileBase.FileName)).Replace(Path.DirectorySeparatorChar, '/');
                httpPostedFileBase.SaveAs(fullFileName);
                var package = new ZipPackage(fullFileName);
                PackageInfo packageInfo = _packageManager.Install(package, _appDataFolderRoot.RootFolder, MapAppRoot());
                ExtensionDescriptor extensionDescriptor = package.GetExtensionDescriptor(packageInfo.ExtensionType);
                System.IO.File.Delete(fullFileName);

                if (DefaultExtensionTypes.IsTheme(extensionDescriptor.ExtensionType)) {
                    Services.Notifier.Information(T("The theme has been successfully installed. It can be enabled in the \"Themes\" page accessible from the menu."));
                }
                else if (DefaultExtensionTypes.IsModule(extensionDescriptor.ExtensionType)) {
                    Services.Notifier.Information(T("The module has been successfully installed."));

                    return InstallPackageDetails(extensionDescriptor, redirectUrl);
                }
            }
            catch (OrchardException e) {
                Services.Notifier.Error(T("Package uploading and installation failed: {0}", e.Message));
                return View("InstallPackageFailed");
            }
            catch (Exception) {
                Services.Notifier.Error(T("Package uploading and installation failed."));
                return View("InstallPackageFailed");
            }

            return Redirect(redirectUrl);
        }