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<?php
// $HeadURL: https://joomgallery.org/svn/joomgallery/JG-2.0/JG/trunk/administrator/components/com_joomgallery/helpers/extensions.php $
// $Id: extensions.php 3778 2012-05-11 20:44:09Z erftralle $
/****************************************************************************************\
** JoomGallery 2 **
** By: JoomGallery::ProjectTeam **
** Copyright (C) 2008 - 2012 JoomGallery::ProjectTeam **
** Based on: JoomGallery 1.0.0 by JoomGallery::ProjectTeam **
** Released under GNU GPL Public License **
** License: http://www.gnu.org/copyleft/gpl.html or have a look **
** at administrator/components/com_joomgallery/LICENSE.TXT **
\****************************************************************************************/
defined('_JEXEC') or die('Direct Access to this location is not allowed.');
/**
* JoomGallery Extensions Class
*
* @static
* @package JoomGallery
* @since 1.5.5
*/
class JoomExtensions
{
/**
* Returns all downloadable extensions developed by JoomGallery::ProjectTeam
* with some additional information like the current version number or a
* short description of the extension
*
* @return array Two-dimensional array with extension information
* @since 1.5.0
*/
public static function getAvailableExtensions()
{
static $extensions;
if(isset($extensions))
{
return $extensions;
}
// Check whether the german or the english RSS file should be loaded
$subdomain = '';
$language = JFactory::getLanguage();
if(strpos($language->getTag(), 'de-') === false)
{
$subdomain = 'en.';
}
$site = 'http://www.'.$subdomain.'joomgallery.net';
$site2 = 'http://'.$subdomain.'joomgallery.net';
$rssurl = $site.'/components/com_newversion/rss/extensions2.rss';
// Get RSS parsed object
$options = array();
$options['rssUrl'] = $rssurl;
$options['cache_time'] = 24*60*60;
$rssDoc = JFactory::getXMLparser('rss', $options);
$extensions = array();
if($rssDoc != false)
{
$items = $rssDoc->get_items();
foreach($items as $item)
{
$name = $item->get_title();
$category = $item->get_category();
$type = $category->get_term();
switch($type)
{
case 'general':
$description = $item->get_description();
$link = $item->get_link();
if(!is_null($description) && $description != '')
{
$extensions[$name]['description'] = $description;
}
if(!is_null($link) && $link != $site && $link != $site2)
{
$extensions[$name]['downloadlink'] = $link;
}
break;
case 'version':
$version = $item->get_description();
$link = $item->get_link();
if(!is_null($version) && $version != '')
{
$extensions[$name]['version'] = $version;
}
if(!is_null($link) && $link != $site && $link != $site2)
{
$extensions[$name]['releaselink'] = $link;
}
break;
case 'autoupdate':
$xml = $item->get_description();
$link = $item->get_link();
if(!is_null($xml) && $xml != '')
{
$extensions[$name]['xml'] = $xml;
}
if(!is_null($link) && $link != $site && $link != $site2)
{
$extensions[$name]['updatelink'] = $link;
}
break;
default:
break;
}
}
// Sort the extensions in alphabetical order
ksort($extensions);
}
return $extensions;
}
/**
* Returns all installed JoomGallery extensions and JoomGallery itself
* with additional information provided by getAvailableExtensions
*
* @param array $extensions Extensions provided by getAvailableExtensions
* @return array Two-dimensional array with extension information
* @since 1.5.0
*/
public static function getInstalledExtensions($extensions = null)
{
static $installed_extensions;
if(isset($installed_extensions))
{
return $installed_extensions;
}
if(is_null($extensions))
{
$extensions = JoomExtensions::getAvailableExtensions();
}
$installed_extensions = array();
foreach($extensions as $name => $extension)
{
if(!isset($extension['xml']))
{
continue;
}
$xml_file = JPath::clean(JPATH_ROOT . DS . $extension['xml']);
if(file_exists($xml_file))
{
$installed_extensions[$name] = $extension;
$xml = JFactory::getXMLParser('simple');
$xml->loadFile($xml_file);
$version_tag = $xml->document->getElementByPath('version');
$installed_version = $version_tag->data();
$installed_extensions[$name]['installed_version'] = $installed_version;
}
}
return $installed_extensions;
}
/**
* Compares all installed extension versions with the current ones
* and returns all dated JoomGallery extensions and JoomGallery itself
* with additional information provided by getAvailableExtensions
*
* @param array $extensions Installed extensions provided by getInstalledExtensions
* @return array Two-dimensional array with extension information
* @since 1.5.0
*/
public static function checkUpdate($extensions = null)
{
static $dated_extensions;
if(isset($dated_extensions))
{
return $dated_extensions;
}
if(is_null($extensions))
{
$extensions = JoomExtensions::getInstalledExtensions();
}
$dated_extensions = array();
foreach($extensions as $name => $extension)
{
if(version_compare($extension['version'], $extension['installed_version'], '>'))
{
$dated_extensions[$name] = $extension;
}
}
return $dated_extensions;
}
/**
* Returns the currently installed version of JoomGallery
*
* @return string Version
* @since 1.5.0
*/
public static function getGalleryVersion()
{
static $version;
if(!isset($version))
{
$config = JoomConfig::getInstance();
$version_from_xml = true;
// Do not read RSS file if update check is disabled
if($config->get('jg_checkupdate'))
{
$version_from_xml = false;
$mainframe = JFactory::getApplication('administrator');
if(!$version = $mainframe->getUserState('joom.version.string'))
{
$extensions = JoomExtensions::getInstalledExtensions();
if(isset($extensions['JoomGallery']['installed_version']))
{
$version = $extensions['JoomGallery']['installed_version'];
}
else
{
$version_from_xml = true;
}
$mainframe->setUserState('joom.version.string', $version);
}
}
if($version_from_xml)
{
$xml_file = JPATH_ADMINISTRATOR . DS . 'components' .DS. 'com_joomgallery' .DS .'joomgallery.xml';
if(file_exists($xml_file))
{
$xml = JFactory::getXMLParser('simple');
$xml->loadFile($xml_file);
if(!$version_tag = $xml->document->getElementByPath('version'))
{
$version = 'not found';
}
else
{
$version = $version_tag->data();
}
}
}
}
return $version;
}
/**
* Fetches an update zip file from JoomGallery server and extracts it
*
* @param string $url The URL to the zip to fetch and extract
* @return void
* @since 1.5.0
*/
public static function autoUpdate($url)
{
if(!$url || !extension_loaded('curl'))
{
$mainframe = JFactory::getApplication('administrator');
$mainframe->redirect('index.php?option='._JOOM_OPTION, JText::_('COM_JOOMGALLERY_ADMENU_MSG_ERROR_FETCHING_ZIP'), 'error');
}
$ambit = JoomAmbit::getInstance();
// Create curl resource
$ch = curl_init(strtolower($url));
// Some settings for curl
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, array());
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
// Create the zip file
jimport('joomla.filesystem.file');
$config = JoomConfig::getInstance();
$output = curl_exec($ch);
JFile::write($ambit->get('temp_path').'update.zip', $output);
// Close curl resource to free up system resources
curl_close($ch);
// Delete files and folders from previous updates
$folder = $ambit->get('temp_path').'update';
if(JFolder::exists($folder))
{
JFolder::delete($folder);
}
// Extract the zip file
jimport('joomla.filesystem.archive');
if(!JArchive::extract($ambit->get('temp_path').'update.zip', $folder))
{
$mainframe = JFactory::getApplication('administrator');
$mainframe->redirect('index.php?option='._JOOM_OPTION, JText::_('Error extracting the zip'), 'error');
}
// Copy an index.html into the created folder if there isn't already one
if(!JFile::exists($folder.DS.'index.html'))
{
$src = JPATH_ROOT.DS.'media'.DS.'joomgallery'.DS.'index.html';
$dest = $folder.DS.'index.html';
JFile::copy($src, $dest);
}
JError::raiseNotice('301', JText::_('COM_JOOMGALLERY_ADMENU_REDIRECT_NOTE'));
// Let's ask Joomla! to do the rest
?>
<form action="index.php" method="post" name="JoomUpdateForm">
<input type="hidden" name="installtype" value="folder" />
<input type="hidden" name="install_directory" value="<?php echo $folder; ?>" />
<input type="hidden" name="task" value="install.install" />
<input type="hidden" name="option" value="com_installer" />
<?php echo JHTML::_('form.token'); ?>
</form>
<script type="text/javascript">
document.JoomUpdateForm.submit();
</script>
<?php
}
}
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