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<?php
/**
* Kunena Package
* @package Kunena.Package
*
* @copyright (C) 2008 - 2014 Kunena Team. All rights reserved.
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
* @link http://www.kunena.org
**/
defined ( '_JEXEC' ) or die ();
/**
* Kunena package installer script.
*/
class Pkg_KunenaInstallerScript {
/**
* List of supported versions. Newest version first!
* @var array
*/
protected $versions = array(
'PHP' => array (
'5.3' => '5.3.1',
'0' => '5.4.14' // Preferred version
),
'MySQL' => array (
'5.1' => '5.1',
'0' => '5.5' // Preferred version
),
'Joomla!' => array (
'3.1' => '3.1.1',
'3.0' => '3.0.3',
'2.5' => '2.5.9',
'0' => '2.5.11' // Preferred version
)
);
/**
* List of required PHP extensions.
* @var array
*/
protected $extensions = array ('dom', 'gd', 'json', 'pcre', 'SimpleXML');
public function install($parent) {
return true;
}
public function discover_install($parent) {
return self::install($parent);
}
public function update($parent) {
return self::install($parent);
}
public function uninstall($parent) {
return true;
}
public function preflight($type, $parent) {
/** @var JInstallerComponent $parent */
$manifest = $parent->getParent()->getManifest();
// Prevent installation if requirements are not met.
if (!$this->checkRequirements($manifest->version)) return false;
// Remove old log file before installation.
$logFile = JFactory::getConfig()->get('log_path').'/kunena.php';
if (file_exists($logFile)) {
@unlink($logFile);
}
return true;
}
public function makeRoute($uri) {
return JRoute::_($uri, false);
}
public function postflight($type, $parent) {
$this->fixUpdateSite();
// Clear Joomla system cache.
/** @var JCache|JCacheController $cache */
$cache = JFactory::getCache();
$cache->clean('_system');
// Remove all compiled files from APC cache.
if (function_exists('apc_clear_cache')) {
@apc_clear_cache();
}
if ($type == 'uninstall') return true;
$this->enablePlugin('system', 'kunena');
$this->enablePlugin('quickicon', 'kunena');
$app = JFactory::getApplication();
if (version_compare(JVERSION, '3.0', '>')) {
$modal = <<<EOS
<div id="kunena-modal" class="modal hide fade"><div class="modal-body"></div></div><script>jQuery('#kunena-modal').remove().prependTo('body').modal({backdrop: 'static', keyboard: false, remote: '{$this->makeRoute('index.php?option=com_kunena&view=install&format=raw')}'})</script>
EOS;
} else {
$modal = "<script>window.addEvent('domready',function(){SqueezeBox.open('{$this->makeRoute('index.php?option=com_kunena&view=install&tmpl=component')}',{size:{x:530,y:140},sizeLoading:{x:530,y:140},closable:false,handler:'iframe'});});</script>";
}
$app->enqueueMessage('Installing Kunena... '.$modal);
return true;
}
function enablePlugin($group, $element) {
$plugin = JTable::getInstance('extension');
if (!$plugin->load(array('type'=>'plugin', 'folder'=>$group, 'element'=>$element))) {
return false;
}
$plugin->enabled = 1;
return $plugin->store();
}
public function checkRequirements($version) {
$db = JFactory::getDbo();
$pass = $this->checkVersion('PHP', phpversion());
$pass &= $this->checkVersion('Joomla!', JVERSION);
$pass &= $this->checkVersion('MySQL', $db->getVersion ());
$pass &= $this->checkDbo($db->name, array('mysql', 'mysqli'));
$pass &= $this->checkExtensions($this->extensions);
$pass &= $this->checkKunena($version);
return $pass;
}
// Internal functions
protected function checkVersion($name, $version) {
$app = JFactory::getApplication();
$major = $minor = 0;
foreach ($this->versions[$name] as $major=>$minor) {
if (!$major || version_compare($version, $major, '<')) continue;
if (version_compare($version, $minor, '>=')) return true;
break;
}
if (!$major) $minor = reset($this->versions[$name]);
$recommended = end($this->versions[$name]);
$app->enqueueMessage(sprintf("%s %s is not supported. Minimum required version is %s %s, but it is higly recommended to use %s %s or later.", $name, $version, $name, $minor, $name, $recommended), 'notice');
return false;
}
protected function checkDbo($name, $types) {
$app = JFactory::getApplication();
if (in_array($name, $types)) {
return true;
}
$app->enqueueMessage(sprintf("Database driver '%s' is not supported. Please use MySQL instead.", $name), 'notice');
return false;
}
protected function checkExtensions($extensions) {
$app = JFactory::getApplication();
$pass = 1;
foreach ($extensions as $name) {
if (!extension_loaded($name)) {
$pass = 0;
$app->enqueueMessage(sprintf("Required PHP extension '%s' is missing. Please install it into your system.", $name), 'notice');
}
}
return $pass;
}
protected function checkKunena($version) {
$app = JFactory::getApplication();
$db = JFactory::getDbo();
// Always load Kunena API if it exists.
$api = JPATH_ADMINISTRATOR . '/components/com_kunena/api.php';
if (file_exists ( $api )) require_once $api;
// Do not install over Git repository (K1.6+).
if ((class_exists('Kunena') && method_exists('Kunena', 'isSvn') && Kunena::isSvn())
|| (class_exists('KunenaForum') && method_exists('KunenaForum', 'isDev') && KunenaForum::isDev())) {
$app->enqueueMessage('Oops! You should not install Kunena over your Git reporitory!', 'notice');
return false;
}
// Check if Kunena can be found from the database.
$table = $db->getPrefix().'kunena_version';
$db->setQuery ( "SHOW TABLES LIKE {$db->quote($table)}" );
if ($db->loadResult () != $table) return true;
// Get installed Kunena version.
$db->setQuery("SELECT version FROM {$table} ORDER BY `id` DESC", 0, 1);
$installed = $db->loadResult();
if (!$installed) return true;
// Always allow upgrade to the newer version.
if (version_compare($version, $installed, '>=')) return true;
// Check if we can downgrade to the current version.
if (class_exists('KunenaInstaller')) {
if (KunenaInstaller::canDowngrade($version)) return true;
} else {
// Workaround when Kunena files were removed to allow downgrade between bugfix versions.
$major = preg_replace('/(\d+.\d+)\..*$/', '\\1', $version);
if (version_compare($installed, $major, '>')) return true;
}
$app->enqueueMessage(sprintf('Sorry, it is not possible to downgrade Kunena %s to version %s.', $installed, $version), 'notice');
return false;
}
protected function fixUpdateSite() {
$db = JFactory::getDbo();
// Find all update sites.
$query = $db->getQuery(true)
->select($db->quoteName('update_site_id'))->from($db->quoteName('#__update_sites'))
->where($db->quoteName('location') . ' LIKE '. $db->quote('http://update.kunena.org/%'))
->order($db->quoteName('update_site_id') . ' ASC');
$db->setQuery($query);
$list = (array) $db->loadColumn();
$query = $db->getQuery(true)
->set($db->quoteName('name').'='.$db->quote('Kunena 3.0 Update Site'))
->set($db->quoteName('type').'='.$db->quote('collection'))
->set($db->quoteName('location').'='.$db->quote('http://update.kunena.org/3.0/list.xml'))
->set($db->quoteName('enabled').'=1')
->set($db->quoteName('last_check_timestamp').'=0');
if (!$list) {
// Create new update site.
$query->insert($db->quoteName('#__update_sites'));
$id = $db->insertid();
} else {
// Update last Kunena update site with new information.
$id = array_pop($list);
$query->update($db->quoteName('#__update_sites'))->where($db->quoteName('update_site_id') . '=' . $id);
}
$db->setQuery($query);
$db->execute();
if ($list) {
$ids = implode(',', $list);
// Remove old update sites.
$query = $db->getQuery(true)->delete($db->quoteName('#__update_sites'))->where($db->quoteName('update_site_id') . 'IN ('.$ids.')');
$db->setQuery($query);
$db->execute();
}
// Currently only pkg_kunena gets registered to update site, so remove everything else.
$list[] = $id;
$ids = implode(',', $list);
// Remove old updates.
$query = $db->getQuery(true)->delete($db->quoteName('#__updates'))->where($db->quoteName('update_site_id') . 'IN ('.$ids.')');
$db->setQuery($query);
$db->execute();
// Remove old update extension bindings.
$query = $db->getQuery(true)->delete($db->quoteName('#__update_sites_extensions'))->where($db->quoteName('update_site_id') . 'IN ('.$ids.')');
$db->setQuery($query);
$db->execute();
}
}