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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 https://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(
'3.4' => '3.4.1',
'3.3' => '3.3.6',
'2.5' => '2.5.28',
'0' => '3.4.1' // 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', 'pdomysql'));
$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);
}
}