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<?php
defined('_JEXEC') or die('Restricted access');
/**
* @package Joomla
* @subpackage plg_system_cwfacebookjs
* @author Steven Palmer <support@coalaweb.com>
* @link https://coalaweb.com/
* @license GNU/GPL V3 or later; https://www.gnu.org/licenses/gpl-3.0.html
* @copyright Copyright (c) 2021 Steven Palmer All rights reserved.
*
* This extension is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
jimport('joomla.filesystem.folder');
jimport('joomla.filesystem.file');
jimport('joomla.log.log');
class plgSystemCwfacebookjsInstallerScript
{
/**
* @var string The extension name
*/
private $coalaweb_extension = 'plg_system_cwfacebookjs';
/**
* @var string The Gears version that is being installed
*/
private $gears_version = '0.6.4';
/**
* @var string Possible duplicate update info
*/
private $update_remove = array(
'http://cdn.coalaweb.com/updates/cw-facebookjs-core.xml',
'http://cdn.coalaweb.com/updates/cw-facebookjs-pro.xml',
'https://coalaweb.com/index.php?option=com_rdsubs&view=updater&format=xml&cat=&type=.xml',
);
/**
* Joomla! pre-flight event
*
* @param string $type Installation type (install, update, discover_install)
* @param JInstaller $parent
* @return bool
*/
public function preflight($type, $parent)
{
if ( strtolower($type) === 'update' && $this->coalaweb_extension == 'plg_system_cwgears' && $this->onBeforeInstall($parent) === false) {
$msg = "<p>You already have a <strong>newer</strong> version of <strong>CoalaWeb Gears</strong> installed. If you would like to <strong>downgrade</strong> please uninstall it first and then install the older version.</p>";
JLog::add($msg, JLog::WARNING, 'jerror');
return false;
}
//Are we trying to uninstall CoalaWeb Gears? Lets check for dependencies first
if (strtolower($type) === 'uninstall' && $this->coalaweb_extension == 'plg_system_cwgears') {
$dependencyCount = count($this->getDependencies('gears'));
if ($dependencyCount) {
$msg = '<p>You have ' . $dependencyCount . ' extension(s) depending on this version of <strong>CoalaWeb Gears</strong>. It cannot be uninstalled unless the other extension(s) are uninstalled first.</p>';
JLog::add($msg, JLog::WARNING, 'jerror');
return false;
}
}
return true;
}
/**
* Runs after install, update or discover_update
*
* @param string $type install, update or discover_update
* @param JInstaller $parent
* @return bool
*/
public function postflight($type, $parent)
{
// Remove duplicate update info
$this->removeUpdateSite();
// Add ourselves to the list of extensions depending on CoalaWeb Gears
if ($this->coalaweb_extension != 'plg_system_cwgears') {
$this->addDependency('gears', $this->coalaweb_extension);
}
JFactory::getCache()->clean('com_plugins');
JFactory::getCache()->clean('_system');
return true;
}
/**
* Runs on uninstallation
*
* @param JInstaller $parent
* @return bool
*/
function uninstall($parent)
{
// Lets remove this extension from the dependency table
if ($this->coalaweb_extension != 'plg_system_cwgears') {
$this->removeDependency('gears', $this->coalaweb_extension);
}
}
/**
* Should we continue install?
* @param $parent
* @return bool
*/
public function onBeforeInstall($parent)
{
if (!$this->gearsNewer()) {
return false;
}
return true;
}
/**
* Check if installed Gears is newer that current attempt
*
* @return bool
*/
private function gearsNewer()
{
$gearsInstalled = $this->getExtensionData('cwgears');
$manifest = json_decode($gearsInstalled->manifest_cache);
if ($manifest->version > $this->gears_version) {
return false;
} else {
return true;
}
}
/**
* Get a variety of extention data
*
* @param null $element
* @return mixed
*/
private function getExtensionData($element = null)
{
$db = JFactory::getDbo();
$query = $db->getQuery(true)
->select([
'e.extension_id', 'e.type', 'e.name', 'e.manifest_cache', 'us.update_site_id', 'us.enabled', 'us.extra_query',
'u.version as new_version',
])
->from($db->quoteName('#__extensions', 'e'))
->join('LEFT OUTER', $db->quoteName('#__update_sites_extensions', 'use') . ' ON (' . $db->quoteName('e.extension_id') . ' = ' . $db->quoteName('use.extension_id') . ')')
->join('LEFT OUTER', $db->quoteName('#__update_sites', 'us') . ' ON (' . $db->quoteName('us.update_site_id') . ' = ' . $db->quoteName('use.update_site_id') . ')')
->join('LEFT OUTER', $db->quoteName('#__updates', 'u') . ' ON (' . $db->quoteName('u.update_site_id') . ' = ' . $db->quoteName('use.update_site_id') . ')')
->where($db->quoteName('e.element') . ' = ' . $db->quote($element));
$db->setQuery($query);
return $db->loadObject();
}
/**
* Remove any conflicting update sites
*/
private function removeUpdateSite()
{
//Do we have anything to remove?
if (empty($this->update_remove)) {
return;
}
// We only need the last part of the name(element) for plugins
$extRoot = explode('_', $this->coalaweb_extension);
if ($extRoot !== null && array_key_exists(2, $extRoot)) {
$element = $extRoot[2];
} else {
$element = $this->coalaweb_extension;
}
$extType = 'plugin';
$db = JFactory::getDbo();
foreach ($this->update_remove as $url) {
// Get some info on all the stuff we've gotta delete
$query = $db->getQuery(true);
$query
->select(array(
$db->qn('s') . '.' . $db->qn('update_site_id'),
$db->qn('e') . '.' . $db->qn('extension_id'),
$db->qn('e') . '.' . $db->qn('element'),
$db->qn('s') . '.' . $db->qn('location'),
))
->from($db->qn('#__update_sites') . ' AS ' . $db->qn('s'))
->join('INNER', $db->qn('#__update_sites_extensions') . ' AS ' . $db->qn('se') . ' ON(' .
$db->qn('se') . '.' . $db->qn('update_site_id') . ' = ' .
$db->qn('s') . '.' . $db->qn('update_site_id')
. ')')
->join('INNER', $db->qn('#__extensions') . ' AS ' . $db->qn('e') . ' ON(' .
$db->qn('e') . '.' . $db->qn('extension_id') . ' = ' .
$db->qn('se') . '.' . $db->qn('extension_id')
. ')')
->where($db->qn('s') . '.' . $db->qn('type') . ' = ' . $db->q('extension'))
->where($db->qn('e') . '.' . $db->qn('type') . ' = ' . $db->q($extType))
->where($db->qn('e') . '.' . $db->qn('element') . ' = ' . $db->q($element))
->where($db->qn('s') . '.' . $db->qn('location') . ' = ' . $db->q($url));
try {
$db->setQuery($query);
$oResult = $db->loadObject();
} catch (Exception $e) {
$oResult = '';
}
// If no record is found, do nothing. We've already killed the monster!
if (is_null($oResult)) {
continue;
}
// Delete the #__update_sites record
$query = $db->getQuery(true);
$query
->delete($db->qn('#__update_sites'))
->where($db->qn('update_site_id') . ' = ' . $db->q($oResult->update_site_id));
$db->setQuery($query);
try {
$db->execute();
} catch (Exception $exc) {
// If the query fails, don't sweat about it
}
// Delete the #__update_sites_extensions record
$query = $db->getQuery(true);
$query
->delete($db->qn('#__update_sites_extensions'))
->where($db->qn('update_site_id') . ' = ' . $db->q($oResult->update_site_id));
$db->setQuery($query);
try {
$db->execute();
} catch (Exception $exc) {
// If the query fails, don't sweat about it
}
// Delete the #__updates records
$query = $db->getQuery(true);
$query
->delete($db->qn('#__updates'))
->where($db->qn('update_site_id') . ' = ' . $db->q($oResult->update_site_id));
$db->setQuery($query);
try {
$db->execute();
} catch (Exception $exc) {
// If the query fails, don't sweat about it
}
}
}
/**
* Get the dependencies for a package from the #__coalaweb_common table
*
* @param string $package The package
*
* @return array The dependencies
*/
protected function getDependencies($package)
{
$db = JFactory::getDbo();
$query = $db->getQuery(true)
->select($db->qn('value'))
->from($db->qn('#__coalaweb_common'))
->where($db->qn('key') . ' = ' . $db->q($package));
try
{
$dependencies = $db->setQuery($query)->loadResult();
$dependencies = json_decode($dependencies, true);
if (empty($dependencies))
{
$dependencies = array();
}
}
catch (Exception $e)
{
$dependencies = array();
}
return $dependencies;
}
/**
* Sets the dependencies for a package into the #__coalaweb_common table
*
* @param string $package The package
* @param array $dependencies The dependencies list
*/
protected function setDependencies($package, array $dependencies)
{
$db = JFactory::getDbo();
$query = $db->getQuery(true)
->delete('#__coalaweb_common')
->where($db->qn('key') . ' = ' . $db->q($package));
try
{
$db->setQuery($query)->execute();
}
catch (Exception $e)
{
// Do nothing if the old key wasn't found
}
$object = (object)array(
'key' => $package,
'value' => json_encode($dependencies)
);
try
{
$db->insertObject('#__coalaweb_common', $object, 'key');
}
catch (Exception $e)
{
// Do nothing if the old key wasn't found
}
}
/**
* Adds a package dependency to #__coalaweb_common
*
* @param string $package The package
* @param string $dependency The dependency to add
*/
protected function addDependency($package, $dependency)
{
$dependencies = $this->getDependencies($package);
if (!in_array($dependency, $dependencies))
{
$dependencies[] = $dependency;
$this->setDependencies($package, $dependencies);
}
}
/**
* Removes a package dependency from #__coalaweb_common
*
* @param string $package The package
* @param string $dependency The dependency to remove
*/
protected function removeDependency($package, $dependency)
{
$dependencies = $this->getDependencies($package);
if (in_array($dependency, $dependencies))
{
$index = array_search($dependency, $dependencies);
unset($dependencies[$index]);
$this->setDependencies($package, $dependencies);
}
}
/**
* Do I have a dependency for a package in #__coalaweb_common
*
* @param string $package The package
* @param string $dependency The dependency to check for
*
* @return bool
*/
protected function hasDependency($package, $dependency)
{
$dependencies = $this->getDependencies($package);
return in_array($dependency, $dependencies);
}
}