.
*
*
* Thank you notice:
* Many thanks to Jean-Sebastien Gervais of LazyBackup.net for proving that
* backup triggered by visitor activity is possible, essentially inspiring the
* functionality of this plugin.
*/
// Protect from unauthorized access
defined('_JEXEC') or die('Restricted Access');
class plgSystemAklazy extends JPlugin
{
/** @var string A nonce (token) to validate requests */
private $nonce = null;
private $locked = 0;
private $tstamp = 0;
/** @var bool Did the last backup crash? */
private $isCrashed = false;
private $debugInfo = '';
public function __construct(& $subject, $config = array())
{
// Use the parent constructor to create the plugin object
parent::__construct($subject, $config);
// Check if we have to disable ourself
$akreset = JRequest::getCmd('akreset','');
$defaultpw = $this->params->get('resetpw','');
if( ($akreset == $defaultpw) && !empty($defaultpw) )
{
// Disable the plugin
$db = JFactory::getDBO();
if( version_compare( JVERSION, '1.6.0', 'ge' ) ) {
$sql = 'UPDATE `#__extensions` SET `enabled` = 0 WHERE `type` = \'plugin\' AND `element` = \'aklazy\'';
} else {
$sql = 'UPDATE #__plugins SET `published` = 0 WHERE `element` = \'aklazy\'';
}
$db->setQuery($sql);
$db->query();
// Load the configuration
$profile = (int)$this->params->get('profile',1);
if($profile <= 0) $profile = 1;
$session =& JFactory::getSession();
$session->set('profile', $profile, 'akeeba');
AEPlatform::load_configuration($profile);
// Remove the log files
$logfile = AEUtilLogger::logName(null);
@unlink($logfile);
AEUtilLogger::ResetLog('lazy');
// Clear lock
$this->unsetLock();
$this->unsetNonce();
// Reset pending backups
AECoreKettenrad::reset();
// Redirect
$app = JFactory::getApplication();
$app->redirect('index.php');
return;
}
// Hijack the application to do the backup steps if aklazy and nonce
// params are defined in the URL query
$aklazy = JRequest::getCmd('aklazy',null);
$nonce = JRequest::getCmd('nonce',null);
// Load the settings
$profile = (int)$this->params->get('profile',1);
if($profile <= 0) $profile = 1;
AEPlatform::load_configuration($profile);
$config = AEFactory::getConfiguration();
$this->locked = $config->get('lazy.lock.status', 0);
$this->tstamp = $config->get('lazy.lock.stamp', 0);
$this->nonce = $config->get('lazy.nonce', null);
// When aklazy is 'check', it returns a backup URL, or dies if there's
// no need to start/step a backup.
if( ($aklazy == 'check') )
{
// Do a backup necessity check and return a URL or nothing at all
$state = $this->getBackupState();
if($state != 'none')
{
$url = JURI::base().'index.php?aklazy='.$state.'&nonce='.$this->nonce;
}
else
{
$url = '';
}
@ob_end_clean(); // Just in case...
echo('###'.$url.'###');
die();
}
if( (in_array($aklazy, array('start','step','ajaxstart','ajaxstep'))) && !empty($nonce) )
{
// Make sure we're not locked
if($this->isLocked()) return;
// Get the saved nonce and compare it to the one in the URL
$this->getNonce();
if(empty($this->nonce)) return;
if($this->nonce != $nonce) return;
// Lock the backup process
if($this->isLocked()) return;
$this->setLock();
// Update the nonce
$this->setNonce();
// Try to convince PHP to not abort the request when the user is disconnected
if(function_exists('ignore_user_abort')) {
ignore_user_abort(true);
}
// Define the basic constants for the Akeeba Engine
if(!defined('AKEEBA_BACKUP_ORIGIN')) {
define('AKEEBA_BACKUP_ORIGIN','lazy'); // Set the backup origin
}
if(!defined('AKEEBAENGINE')) {
define('AKEEBAENGINE', 1); // Required for accessing Akeeba Engine's factory class
define('AKEEBAPLATFORM', 'joomla15'); // So that platform-specific stuff can get done!
}
// Load the Akeeba Engine factory
require_once JPATH_ADMINISTRATOR.DS.'components'.DS.'com_akeeba'.DS.'akeeba'.DS.'factory.php';
// Load the language files
$jlang =& JFactory::getLanguage();
$jlang->load('com_akeeba', JPATH_SITE, 'en-GB', true);
$jlang->load('com_akeeba', JPATH_SITE, $jlang->getDefault(), true);
$jlang->load('com_akeeba', JPATH_SITE, null, true);
$jlang->load('com_akeeba', JPATH_ADMINISTRATOR, 'en-GB', true);
$jlang->load('com_akeeba', JPATH_ADMINISTRATOR, $jlang->getDefault(), true);
$jlang->load('com_akeeba', JPATH_ADMINISTRATOR, null, true);
// Set the profile and load the configuration
$profile = (int)$this->params->get('profile',1);
if($profile <= 0) $profile = 1;
$session =& JFactory::getSession();
$session->set('profile', $profile, 'akeeba');
AEPlatform::load_configuration($profile);
$isDone = false;
register_shutdown_function('AkeebaBackupLazyShutdown');
if(in_array($aklazy,array('start','ajaxstart')))
{
// Start a new backup
AECoreKettenrad::reset();
$kettenrad =& AECoreKettenrad::load(AKEEBA_BACKUP_ORIGIN);
$user =& JFactory::getUser();
$userTZ = $user->getParam('timezone',0);
$dateNow = new JDate();
$dateNow->setOffset($userTZ);
if( version_compare( JVERSION, '1.6.0', 'ge' ) ) {
$description = JText::_('BACKUP_DEFAULT_DESCRIPTION').' '.$dateNow->format(JText::_('DATE_FORMAT_LC2'), true);
} else {
$description = JText::_('BACKUP_DEFAULT_DESCRIPTION').' '.$dateNow->toFormat(JText::_('DATE_FORMAT_LC2'));
}
$options = array(
'description' => $description,
'comment' => ''
);
$kettenrad->setup($options);
$array = $kettenrad->tick();
}
else
{
// Run a backup step
$kettenrad =& AECoreKettenrad::load(AKEEBA_BACKUP_ORIGIN);
$array = $kettenrad->tick();
}
AECoreKettenrad::save(AKEEBA_BACKUP_ORIGIN);
// Parse the return array
if($array['Error'] != '')
{
// An error occured. Reset the engine and unset the nonce.
$this->unsetNonce();
AECoreKettenrad::reset();
$isDone = true;
}
elseif($array['HasRun'] == false)
{
// All done. Clean up and unset the nonce.
$this->unsetNonce();
AEFactory::nuke();
AEUtilTempvars::reset();
$isDone = true;
}
// Unlock the process
$this->unsetLock();
// Do we need to forward to the new step?
if(in_array($aklazy, array('start','step')))
{
// IFRAME handling
if(!$isDone)
{
$url = JURI::base().'index.php?aklazy=step&nonce='.$this->nonce;
die("");
}
}
else
{
if(!$isDone)
{
die('###'.$this->nonce.'###');
}
}
// Stop processing
die();
}
}
/**
* Checks if it's necessary to add background backup code to the page
*/
function onAfterRender()
{
$caching = $this->getCachingState();
$debug = '';
$html = '';
if($caching)
{
// If caching is enabled, use Javascript code
$html = $this->getJavascript();
}
else
{
// If caching is disabled, create a hidden backup iFrame if we need
// to start or continue a backup job
$action = $this->getBackupState();
if(JDEBUG) {
$debug = ''.$this->debugInfo.'
';
}
if($action != 'none') {
$url = JURI::base().'index.php?aklazy='.$action.'&nonce='.$this->nonce;
$html = '';
}
}
if(empty($html) && empty($debug)) return;
// Add the extra HTML to the page
$buffer = JResponse::getBody();
$pos = strpos($buffer, " ");
if($pos > 0)
{
$buffer = substr($buffer, 0, $pos).$debug.$html.substr($buffer, $pos);
JResponse::setBody($buffer);
}
}
/**
* Returns the backup state ('none','start', or 'step')
*/
private function getBackupState()
{
$this->debugInfo = '