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<?php
namespace Falang;
use Joomla\CMS\Factory;
use Joomla\CMS\Updater\Updater;
class Update
{
/** @var Updater The Joomla! updater object */
protected $updater = null;
/** @var int The extension_id of this component */
protected $extension_id = 0;
/** @var string The currently installed version, as reported by the #__extensions table */
protected $version = 'dev';
/** @var string The name of the component e.g. com_something */
protected $component = 'com_foobar';
/** @var string The URL to the component's update XML stream */
protected $updateSite = null;
/** @var string The name to the component's update site (description of the update XML stream) */
protected $updateSiteName = null;
/** @var string The extra query to append to (commercial) components' download URLs */
protected $extraQuery = null;
/**
* Public constructor. Initialises the protected members as well. Useful $config keys:
* update_component The component name, e.g. com_foobar
* update_version The default version if the manifest cache is unreadable
* update_site The URL to the component's update XML stream
* update_extraquery The extra query to append to (commercial) components' download URLs
* update_sitename The update site's name (description)
*
* @param array $config
*/
public function __construct($config = array())
{
$input = Factory::getApplication()->input;
// Get an instance of the updater class
$this->updater = Updater::getInstance();
// Get the component name
if (isset($config['update_component']))
{
$this->component = $config['update_component'];
}
else
{
$this->component = $input->getCmd('option', '');
}
// Get the component version
if (isset($config['update_version']))
{
$this->version = $config['update_version'];
}
// Get the update site
if (isset($config['update_site']))
{
$this->updateSite = $config['update_site'];
}
// Get the extra query
if (isset($config['update_extraquery']))
{
$this->extraQuery = $config['update_extraquery'];
}
// Get the extra query
if (isset($config['update_sitename']))
{
$this->updateSiteName = $config['update_sitename'];
}
// Get the extension type
list($extensionPrefix, $extensionName) = explode('_', $this->component);
switch ($extensionPrefix)
{
default:
case 'com':
$type = 'component';
$name = $this->component;
break;
case 'pkg':
$type = 'package';
$name = $this->component;
break;
}
// Find the extension ID
$db = Factory::getDbo();
$query = $db->getQuery(true)
->select('*')
->from($db->qn('#__extensions'))
->where($db->qn('type') . ' = ' . $db->q($type))
->where($db->qn('element') . ' = ' . $db->q($name));
$db->setQuery($query);
$extension = $db->loadObject();
if (is_object($extension))
{
$this->extension_id = $extension->extension_id;
$data = json_decode($extension->manifest_cache, true);
if (isset($data['version']))
{
$this->version = $data['version'];
}
}
}
/**
* Retrieves the update information of the component, returning an array with the following keys:
*
* hasUpdate True if an update is available
* version The version of the available update
* infoURL The URL to the download page of the update
*
* @param bool $force Set to true if you want to forcibly reload the update information
*
* @return array See the method description for more information
*/
public function getUpdates($force = false)
{
$db = Factory::getDbo();
// Default response (no update)
$updateResponse = array(
'hasUpdate' => false,
'version' => '',
'infoURL' => ''
);
if (empty($this->extension_id))
{
return $updateResponse;
}
// If we are forcing the reload, set the last_check_timestamp to 0
// and remove cached component update info in order to force a reload
if ($force)
{
// Find the update site IDs
$updateSiteIds = $this->getUpdateSiteIds();
if (empty($updateSiteIds))
{
return $updateResponse;
}
// Set the last_check_timestamp to 0
$query = $db->getQuery(true)
->update($db->qn('#__update_sites'))
->set($db->qn('last_check_timestamp') . ' = ' . $db->q('0'))
->where($db->qn('update_site_id') .' IN ('.implode(', ', $updateSiteIds).')');
$db->setQuery($query);
$db->execute();
// Remove cached component update info from #__updates
$query = $db->getQuery(true)
->delete($db->qn('#__updates'))
->where($db->qn('update_site_id') .' IN ('.implode(', ', $updateSiteIds).')');
$db->setQuery($query);
$db->execute();
}
// Use the update cache timeout specified in com_installer
$comInstallerParams = \JComponentHelper::getParams('com_installer', false);
$timeout = 3600 * $comInstallerParams->get('cachetimeout', '6');
// Load any updates from the network into the #__updates table
$this->updater->findUpdates($this->extension_id, $timeout);
// Get the update record from the database
$query = $db->getQuery(true)
->select('*')
->from($db->qn('#__updates'))
->where($db->qn('extension_id') . ' = ' . $db->q($this->extension_id));
$db->setQuery($query);
$updateRecord = $db->loadObject();
// If we have an update record in the database return the information found there
if (is_object($updateRecord))
{
$updateResponse = array(
'hasUpdate' => true,
'version' => $updateRecord->version,
'infoURL' => $updateRecord->infourl,
);
}
return $updateResponse;
}
/**
* Gets the update site Ids for our extension.
*
* @return mixed An array of Ids or null if the query failed.
*/
public function getUpdateSiteIds()
{
$db = Factory::getDbo();
$query = $db->getQuery(true)
->select($db->qn('update_site_id'))
->from($db->qn('#__update_sites_extensions'))
->where($db->qn('extension_id') . ' = ' . $db->q($this->extension_id));
$db->setQuery($query);
$updateSiteIds = $db->loadColumn(0);
return $updateSiteIds;
}
/**
* Get the currently installed version as reported by the #__extensions table
*
* @return string
*/
public function getVersion()
{
return $this->version;
}
/**
* Override the currently installed version as reported by the #__extensions table
*
* @param string $version
*/
public function setVersion($version)
{
$this->version = $version;
}
/**
* Refreshes the Joomla! update sites for this extension as needed
*
* @return void
*/
public function refreshUpdateSite()
{
if (empty($this->extension_id))
{
return;
}
// Create the update site definition we want to store to the database
$update_site = array(
'name' => $this->updateSiteName,
'type' => 'extension',
'location' => $this->updateSite,
'enabled' => 1,
'last_check_timestamp' => 0,
'extra_query' => $this->extraQuery
);
// Get a reference to the db driver
$db = Factory::getDbo();
// Get the #__update_sites columns
$columns = $db->getTableColumns('#__update_sites', true);
if (version_compare(JVERSION, '3.0.0', 'lt') || !array_key_exists('extra_query', $columns))
{
unset($update_site['extra_query']);
}
// Get the update sites for our extension
$updateSiteIds = $this->getUpdateSiteIds();
if (empty($updateSiteIds))
{
$updateSiteIds = array();
}
/** @var boolean $needNewUpdateSite Do I need to create a new update site? */
$needNewUpdateSite = true;
/** @var int[] $deleteOldSites Old Site IDs to delete */
$deleteOldSites = array();
// Loop through all update sites
foreach ($updateSiteIds as $id)
{
$query = $db->getQuery(true)
->select('*')
->from($db->qn('#__update_sites'))
->where($db->qn('update_site_id') . ' = ' . $db->q($id));
$db->setQuery($query);
$aSite = $db->loadObject();
if (empty($aSite))
{
// Update site is now up-to-date, don't need to refresh it anymore.
continue;
}
// We have an update site that looks like ours
if ($needNewUpdateSite && ($aSite->name == $update_site['name']) && ($aSite->location == $update_site['location']))
{
$needNewUpdateSite = false;
$mustUpdate = false;
// Is it enabled? If not, enable it.
if (!$aSite->enabled)
{
$mustUpdate = true;
$aSite->enabled = 1;
}
// Do we have the extra_query property (J 3.2+) and does it match?
if (property_exists($aSite, 'extra_query') && isset($update_site['extra_query'])
&& ($aSite->extra_query != $update_site['extra_query']))
{
$mustUpdate = true;
$aSite->extra_query = $update_site['extra_query'];
}
// Update the update site if necessary
if ($mustUpdate)
{
$db->updateObject('#__update_sites', $aSite, 'update_site_id', true);
}
continue;
}
// In any other case we need to delete this update site, it's obsolete
$deleteOldSites[] = $aSite->update_site_id;
}
if (!empty($deleteOldSites))
{
try
{
$obsoleteIDsQuoted = array_map(array($db, 'quote'), $deleteOldSites);
// Delete update sites
$query = $db->getQuery(true)
->delete('#__update_sites')
->where($db->qn('update_site_id') . ' IN (' . implode(',', $obsoleteIDsQuoted) . ')');
$db->setQuery($query)->execute();
// Delete update sites to extension ID records
$query = $db->getQuery(true)
->delete('#__update_sites_extensions')
->where($db->qn('update_site_id') . ' IN (' . implode(',', $obsoleteIDsQuoted) . ')');
$db->setQuery($query)->execute();
}
catch (\Exception $e)
{
// Do nothing on failure
return;
}
}
// Do we still need to create a new update site?
if ($needNewUpdateSite)
{
// No update sites defined. Create a new one.
$newSite = (object)$update_site;
$db->insertObject('#__update_sites', $newSite);
$id = $db->insertid();
$updateSiteExtension = (object)array(
'update_site_id' => $id,
'extension_id' => $this->extension_id,
);
$db->insertObject('#__update_sites_extensions', $updateSiteExtension);
}
}
/**
* Removes any update sites which go by the same name or the same location as our update site but do not match the
* extension ID.
*/
public function removeObsoleteUpdateSites()
{
$db = Factory::getDbo();
// Get update site IDs
$updateSiteIDs = $this->getUpdateSiteIds();
// Find update sites where the name OR the location matches BUT they are not one of the update site IDs
$query = $db->getQuery(true)
->select($db->qn('update_site_id'))
->from($db->qn('#__update_sites'))
->where(
'((' . $db->qn('name') . ' = ' . $db->q($this->updateSiteName) . ') OR ' .
'(' . $db->qn('location') . ' = ' . $db->q($this->updateSite) . '))'
);
if (!empty($updateSiteIDs))
{
$updateSitesQuoted = array_map(array($db, 'quote'), $updateSiteIDs);
$query->where($db->qn('update_site_id') . ' NOT IN (' . implode(',', $updateSitesQuoted) . ')');
}
try
{
$ids = $db->setQuery($query)->loadColumn();
if (!empty($ids))
{
$obsoleteIDsQuoted = array_map(array($db, 'quote'), $ids);
// Delete update sites
$query = $db->getQuery(true)
->delete('#__update_sites')
->where($db->qn('update_site_id') . ' IN (' . implode(',', $obsoleteIDsQuoted) . ')');
$db->setQuery($query)->execute();
// Delete update sites to extension ID records
$query = $db->getQuery(true)
->delete('#__update_sites_extensions')
->where($db->qn('update_site_id') . ' IN (' . implode(',', $obsoleteIDsQuoted) . ')');
$db->setQuery($query)->execute();
}
}
catch (\Exception $e)
{
// Do nothing on failure
return;
}
}
}