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<?php
/**
* @package akeebabackup
* @copyright Copyright 2006-2026 Nicholas K. Dionysopoulos / Akeeba Ltd
* @license GNU General Public License version 3, or later
*/
namespace Akeeba\Component\AkeebaBackup\Administrator\Controller;
defined('_JEXEC') || die;
use Akeeba\Component\AkeebaBackup\Administrator\Mixin\ControllerCustomACLTrait;
use Akeeba\Component\AkeebaBackup\Administrator\Mixin\ControllerEventsTrait;
use Akeeba\Component\AkeebaBackup\Administrator\Mixin\ControllerRegisterTasksTrait;
use Akeeba\Component\AkeebaBackup\Administrator\Mixin\ControllerReusableModelsTrait;
use Akeeba\Component\AkeebaBackup\Administrator\Model\RemotefilesModel;
use Akeeba\Engine\Factory;
use Akeeba\Engine\Platform;
use Exception;
use Joomla\CMS\Application\CMSApplication;
use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\Language\Text;
use Joomla\CMS\MVC\Controller\BaseController;
use Joomla\CMS\MVC\Factory\MVCFactoryInterface;
use Joomla\CMS\Uri\Uri;
use Joomla\Input\Input;
use RuntimeException;
class RemotefilesController extends BaseController
{
use ControllerEventsTrait;
use ControllerCustomACLTrait;
use ControllerRegisterTasksTrait;
use ControllerReusableModelsTrait;
private bool $noFlush = false;
public function __construct(
$config = [], ?MVCFactoryInterface $factory = null, ?CMSApplication $app = null, ?Input $input = null
)
{
parent::__construct($config, $factory, $app, $input);
$this->noFlush = ComponentHelper::getParams('com_akeebabackup')->get('no_flush', 0) == 1;
$this->registerControllerTasks('invalidTask');
}
public function display($cachable = false, $urlparams = [])
{
$document = $this->app->getDocument();
$viewType = $document->getType();
$viewName = $this->input->get('view', $this->default_view);
$viewLayout = $this->input->get('layout', 'default', 'string');
$view = $this->getView($viewName, $viewType, '', ['base_path' => $this->basePath, 'layout' => $viewLayout]);
// Get/Create the model
if ($model = $this->getModel($viewName, 'Administrator', ['base_path' => $this->basePath]))
{
// Push the model into the view (as default)
$view->setModel($model, true);
}
$view->setDocument($document);
$view->task = $this->task;
$view->doTask = $this->doTask;
// Display the view
$view->display();
return $this;
}
/**
* When someone calls this controller without a task we have to show an error message. This is implemented by
* having this task throw a runtime exception and set it as the default task.
*
* @return void
*
* @noinspection PhpUnused
*/
public function invalidTask()
{
throw new RuntimeException(Text::_('JERROR_ALERTNOAUTHOR'), 403);
}
/**
* Lists the available remote storage actions for a specific backup entry
*
* @return void
* @throws Exception
*/
public function listactions()
{
// List available actions
$id = $this->getAndCheckId();
/** @var RemotefilesModel $model */
$model = $this->getModel('Remotefiles', 'Administrator');
$model->setState('id', $id);
if ($id === false)
{
throw new RuntimeException(Text::_('JGLOBAL_RESOURCE_NOT_FOUND'), 404);
}
$this->display(false);
}
/**
* Fetches a complete backup set from a remote storage location to the local (server)
* storage so that the user can download or restore it.
*
* @return void
* @throws Exception
*
* @noinspection PhpUnused
*/
public function dltoserver()
{
$this->checkToken($this->input->getMethod());
// Get the parameters
$id = $this->getAndCheckId();
$part = $this->input->get('part', -1, 'int');
$frag = $this->input->get('frag', -1, 'int');
// Check the ID
if ($id === false)
{
$url = Uri::base()
. 'index.php?option=com_akeebabackup&view=Remotefiles&tmpl=component&task=listactions&id=' . $id;
$this->setRedirect($url, Text::_('COM_AKEEBABACKUP_REMOTEFILES_ERR_INVALIDID'), 'error');
return;
}
if (($part == -1) && ($frag == -1))
{
$this->triggerEvent('onFetch', [$id]);
}
/** @var RemotefilesModel $model */
$model = $this->getModel('Remotefiles', 'Administrator');
try
{
$result = $model->downloadToServer($id, $part, $frag);
}
catch (Exception $e)
{
$allErrors = $model->getErrorsFromExceptions($e);
$url = Uri::base()
. 'index.php?option=com_akeebabackup&view=Remotefiles&tmpl=component&task=listactions&id='
. $id;
$this->setRedirect($url, implode('<br/>', $allErrors), 'error');
return;
}
if ($result === true)
{
$url = Uri::base()
. 'index.php?option=com_akeebabackup&view=Remotefiles&tmpl=component&task=listactions&id=' . $id;
$this->setRedirect($url, Text::_('COM_AKEEBABACKUP_REMOTEFILES_LBL_JUSTFINISHED'));
return;
}
$this->display(false);
}
/**
* Downloads a file from the remote storage to the user's browser
*
* @return void
*
* @noinspection PhpUnused
*/
public function dlfromremote()
{
$id = $this->getAndCheckId();
$part = $this->input->get('part', 0, 'int');
if ($id === false)
{
$url = Uri::base()
. 'index.php?option=com_akeebabackup&view=Remotefiles&tmpl=component&task=listactions&id=' . $id;
$this->setRedirect($url, Text::_('COM_AKEEBABACKUP_REMOTEFILES_ERR_INVALIDID'), 'error');
return;
}
$stat = Platform::getInstance()->get_statistics($id);
$remoteFilenameParts = explode('://', $stat['remote_filename']);
$engine = Factory::getPostprocEngine($remoteFilenameParts[0]);
$remote_filename = $remoteFilenameParts[1];
$basename = basename($remote_filename);
$extension = strtolower(str_replace(".", "", strrchr($basename, ".")));
$new_extension = $extension;
if ($part > 0)
{
$new_extension = substr($extension, 0, 1) . sprintf('%02u', $part);
}
$this->triggerEvent('onDownload', [$id, $part + 1]);
$filename = $basename . '.' . $new_extension;
$remote_filename = substr($remote_filename, 0, -strlen($extension)) . $new_extension;
if ($engine->doesInlineDownloadToBrowser())
{
@ob_end_clean();
@clearstatcache();
// Send MIME headers
header('MIME-Version: 1.0');
header('Content-Disposition: attachment; filename="' . $filename . '"');
header('Content-Transfer-Encoding: binary');
switch ($extension)
{
case 'zip':
// ZIP MIME type
header('Content-Type: application/zip');
break;
default:
// Generic binary data MIME type
header('Content-Type: application/octet-stream');
break;
}
// Disable caching
header('Expires: Mon, 20 Dec 1998 01:00:00 GMT');
header('Cache-Control: no-cache, must-revalidate');
header('Pragma: no-cache');
}
try
{
$result = $engine->downloadToBrowser($remote_filename);
}
catch (Exception $e)
{
$result = null;
// Failed to download. Get the messages from the engine.
$errors = [];
$parentException = $e;
while ($parentException)
{
$errors[] = $e->getMessage();
$parentException = $e->getPrevious();
}
// Redirect and convey the errors to the user
$url = Uri::base()
. 'index.php?option=com_akeebabackup&view=Remotefiles&tmpl=component&task=listactions&id=' . $id;
$this->setRedirect($url, implode('<br/>', $errors), 'error');
}
if (!is_null($result))
{
// We have to redirect
$result = str_replace('://%2F', '://', $result);
@ob_end_clean();
header('Location: ' . $result);
if (!$this->noFlush)
{
flush();
}
$this->app->close();
}
}
/**
* Deletes a file from the remote storage
*
* @return void
*/
public function delete()
{
// Get the parameters
$id = $this->getAndCheckId();
$part = $this->input->get('part', -1, 'int');
// Check the ID
if ($id === false)
{
$url = Uri::base()
. 'index.php?option=com_akeebabackup&view=Remotefiles&tmpl=component&task=listactions&id=' . $id;
$this->setRedirect($url, Text::_('COM_AKEEBABACKUP_REMOTEFILES_ERR_INVALIDID'), 'error');
return;
}
if ($part == -1)
{
$this->triggerEvent('onDelete', [$id]);
}
/** @var RemotefilesModel $model */
$model = $this->getModel('Remotefiles', 'Administrator');
$model->setState('id', $id);
$model->setState('part', $part);
try
{
$result = $model->deleteRemoteFiles($id, $part);
}
catch (Exception $e)
{
$allErrors = $model->getErrorsFromExceptions($e);
$url = Uri::base()
. 'index.php?option=com_akeebabackup&view=Remotefiles&tmpl=component&task=listactions&id='
. $id;
$this->setRedirect($url, implode('<br/>', $allErrors), 'error');
return;
}
if ($result['finished'])
{
$url = Uri::base()
. 'index.php?option=com_akeebabackup&view=Remotefiles&tmpl=component&task=listactions&id=' . $id;
$this->setRedirect($url, Text::_('COM_AKEEBABACKUP_REMOTEFILES_LBL_JUSTFINISHEDELETING'));
return;
}
$url = Uri::base() . 'index.php?option=com_akeebabackup&view=Remotefiles&tmpl=component&task=delete&id='
. $result['id'] .
'&part=' . $result['part'];
$this->setRedirect($url);
}
/**
* Gets the stats record ID from the request and checks that it does exist
*
* @return bool|int False if an invalid ID is found, the numeric ID if it's valid
*/
private function getAndCheckId()
{
$id = $this->input->get('id', 0, 'int');
if ($id <= 0)
{
return false;
}
$backupRecord = Platform::getInstance()->get_statistics($id);
if (empty($backupRecord) || !is_array($backupRecord))
{
return false;
}
// Load the correct backup profile. The post-processing engine could rely on the active profile (ie OneDrive).
define('AKEEBA_PROFILE', $backupRecord['profile_id']);
Platform::getInstance()->load_configuration($backupRecord['profile_id']);
return $id;
}
}