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<?php
/**
* Kunena Component
* @package Kunena.Installer
*
* @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 ();
jimport( 'joomla.filesystem.folder' );
jimport( 'joomla.filesystem.file' );
class Com_KunenaInstallerScript {
protected $versions = array(
'PHP' => array (
'5.3' => '5.3.1',
'0' => '5.4.23' // Preferred version
),
'MySQL' => array (
'5.1' => '5.1',
'0' => '5.5' // Preferred version
),
'Joomla!' => array (
'3.3' => '3.3.1',
'3.2' => '3.2.4',
'3.1' => '3.1.5',
'3.0' => '3.0.4',
'2.5' => '2.5.9',
'0' => '2.5.22' // Preferred version
)
);
protected $extensions = array ('dom', 'gd', 'json', 'pcre', 'SimpleXML');
public function install($parent) {
// Delete all cached files.
$cacheDir = JPATH_CACHE.'/kunena';
if (is_dir($cacheDir)) JFolder::delete($cacheDir);
JFolder::create($cacheDir);
return true;
}
public function discover_install($parent) {
return self::install($parent);
}
public function update($parent) {
return self::install($parent);
}
public function uninstall($parent) {
$adminpath = $parent->getParent()->getPath('extension_administrator');
$model = "{$adminpath}/install/model.php";
if (file_exists($model)) {
require_once($model);
$installer = new KunenaModelInstall();
$installer->uninstall();
}
return true;
}
public function preflight($type, $parent) {
$parent = $parent->getParent();
$manifest = $parent->getManifest();
// Prevent installation if requirements are not met.
if (!$this->checkRequirements($manifest->version)) return false;
$adminPath = $parent->getPath('extension_administrator');
$sitePath = $parent->getPath('extension_site');
if (is_file($adminPath.'/admin.kunena.php')) {
// Kunena 2.0 or older release found, clean up the directories.
static $ignoreAdmin = array('index.html', 'kunena.xml', 'archive');
if (is_file($adminPath.'/install.script.php')) {
// Kunena 1.7 or older release..
$ignoreAdmin[] = 'install.script.php';
$ignoreAdmin[] = 'admin.kunena.php';
}
static $ignoreSite = array('index.html', 'kunena.php', 'router.php', 'template', 'COPYRIGHT.php', 'CHANGELOG.php');
$this->deleteFolder($adminPath, $ignoreAdmin);
$this->deleteFolder($sitePath, $ignoreSite);
$this->deleteFolder($sitePath.'/template/blue_eagle', array('params.ini'));
// TODO: delete also en-GB files!
}
// Prepare installation.
$model = "{$adminPath}/install/model.php";
if (file_exists($model)) {
require_once($model);
$installer = new KunenaModelInstall();
$installer->install();
}
return true;
}
public function postflight($type, $parent) {
return true;
}
public function checkRequirements($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();
// 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;
}
$db = JFactory::getDBO();
// 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
$db->setQuery("SELECT version FROM {$db->quoteName($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, $version), 'notice');
return false;
}
public function deleteFiles($path, $ignore=array()) {
$ignore = array_merge($ignore, array('.git', '.svn', 'CVS','.DS_Store','__MACOSX'));
if ( JFolder::exists($path) ) foreach (JFolder::files($path, '.', false, true, $ignore) as $file) {
if ( JFile::exists($file) ) {
JFile::delete($file);
}
}
}
public function deleteFolders($path, $ignore=array()) {
$ignore = array_merge($ignore, array('.git', '.svn', 'CVS','.DS_Store','__MACOSX'));
if ( JFolder::exists($path) ) foreach (JFolder::folders($path, '.', false, true, $ignore) as $folder) {
if ( JFolder::exists($folder) ) {
JFolder::delete($folder);
}
}
}
public function deleteFolder($path, $ignore=array()) {
$this->deleteFiles($path, $ignore);
$this->deleteFolders($path, $ignore);
}
}