/**
* Destroy current session
*/
public static function delCurrent()
{
// Delete the global object
if ($session = LigminchaGlobalSession::getCurrent()) {
lgDebug('Session destroyed', $session);
LigminchaGlobalDistributed::del(array('id' => $session->id));
}
// Delete the SSO cookie
LigminchaGlobalSSO::delCookie();
}
/**
* Process an incoming sync item
* - this causes the crud updates that the object represents to be replicated locally
* - more sync objects may be created for re-routing purposes
*/
public static function process($crud, $fields, $origin)
{
if ($crud == 'U') {
$method = 'update';
} elseif ($crud == 'D') {
$method = 'del';
} else {
die("Unknown CRUD method \"{$crud}\"");
}
if (!is_array($fields)) {
$fields = json_decode($fields, true);
}
lgDebug("Calling \"{$method}\" CRUD method");
call_user_func("LigminchaGlobalDistributed::{$method}", $fields, $origin);
}
/**
* Add the toolbar body content to the final page
*/
public function onAfterFinalPageOutput($output)
{
// Get the page output buffer
$buffer = ob_get_clean();
ob_start();
// Add the toolbar head code into the page head area
$buffer = str_replace('</head>', "{$this->head}\n</head>", $buffer);
// Add the toolbar body code into start of the page body
$buffer = preg_replace('#<body.*?>#', "\$0\n{$this->body}", $buffer);
// Remove the wiki login link
$buffer = str_replace('id="p-personal"', 'style="display:none"', $buffer);
// Output the modified buffer
echo $buffer;
lgDebug("Global toolbar added to MediaWiki page");
return true;
}
/**
* Render an iFrame that requests the global toolbar
*/
public static function toolbar()
{
// Get the url of the global app
$config = JFactory::getConfig();
$lgGlobalAppDomain = $config->get('lgGlobalApp', 'global.ligmincha.org');
// Include the code to render the toolbar
require __DIR__ . '/toolbar.php';
// Add the toolbar to the body if we have a user
$app = JFactory::getApplication('site');
$page = $app->getBody();
// Add the toolbar head code into the page head area
$page = str_replace('</head>', "{$lgToolbarHead}\n</head>", $page);
// Add the toolbar body code into start of the page body
$page = preg_replace('#<body.*?>#', "\$0\n{$lgToolbarBody}", $page);
// Set the image to the currently selected header (tempprary: fake template updating demo)
$data = LigminchaGlobalServer::getCurrent()->data;
$template = array_key_exists('template', $data) ? $data['template'] : 'maple';
$page = preg_replace('#(?<=src="images/headers/)(.+?)(?=\\.jpg")#', $template, $page);
lgDebug("Template set to \"{$template}\"");
// Update the page content
$app->setBody($page);
lgDebug("Global toolbar added to Joomla page");
}
/**
* Decode incoming data (unless it's already an array which is the case when it comes from Ajax)
*/
private static function decodeData($data)
{
lgDebug('Decoding data');
$data = is_array($data) ? $data : json_decode($data, true);
lgDebug('Data decoded (Objects: ' . (count($data) - 3) . ')');
return $data;
}
/**
* Update or create an object in the database and queue the changes if necessary
* - $origin is passed if this changed arrived from a remote queue
* - $silent is used to stop any sync objects being generated by the change
*/
public function update($origin = false, $silent = false)
{
$db = JFactory::getDbo();
$table = LigminchaGlobalDistributed::sqlTable();
// Bail if no type
if ($this->type < 1) {
die('Typeless distributed objects not allowed!');
}
// Update an existing object in the database
if ($this->exists) {
// TODO: Validate cond
// Update automatic properties
$this->flag(LG_NEW, false);
$this->modified = self::timestamp();
$sqlVals = $this->sqlValues(false);
lgDebug('Updating database, object: ' . $this->id);
$db->setQuery("UPDATE {$table} SET {$sqlVals} WHERE `id`=0x{$this->id}");
$db->query();
} else {
// Only set the automatic properties for locally created non-existent objects
if (!$origin) {
$this->flag(LG_NEW, true);
$this->modified = null;
$this->creation = self::timestamp();
// The entry is owned by the user unless it's a server/sync/user object
if ($this->type == LG_SERVER || $this->type == LG_USER || $this->type == LG_SYNC) {
$this->owner = null;
} else {
$this->owner = LigminchaGlobalUser::getCurrent() ? LigminchaGlobalUser::getCurrent()->id : null;
}
}
$sqlVals = $this->sqlValues();
$db->setQuery("REPLACE INTO {$table} SET {$sqlVals}");
$db->query();
}
// Add outgoing sync objects depending on the context of this change
// TODO: $private = $this->flag( LG_PRIVATE ) ? $this->owner->server : false
if (!$silent && !$this->flag(LG_LOCAL)) {
LigminchaGlobalSync::create('U', $this->fields(), $origin, $private = false);
}
}
/**
* Get/create current object instance
*/
public static function getCurrent()
{
if (is_null(self::$current)) {
// Make a new uuid from the server's secret
$config = JFactory::getConfig();
$id = self::hash($config->get('secret'));
self::$current = self::newFromId($id);
// If the object was newly created, populate with default initial data and save
if (!self::$current->tag) {
lgDebug('Server object created', self::$current);
// Make it easy to find this server by domain
self::$current->tag = $_SERVER['HTTP_HOST'];
// Server information
self::$current->data = self::serverData();
// Save our new instance to the DB (if we have a master yet)
if (self::$master) {
self::$current->update();
lgDebug('Server object updated', self::$master);
} else {
self::$deferred = true;
lgDebug('Server object update deferred, master unknown');
}
} else {
lgDebug('Server object retrieved from database', self::$current);
}
}
// If we have a master and we're not in standalone, ensure the server data is up to date
if (self::$master && !LG_STANDALONE) {
static $checked = false;
if (!$checked) {
$checked = true;
if (json_encode(self::$current->data) !== json_encode(self::serverData(self::$current->data))) {
self::$current->data = self::serverData(self::$current->data);
self::$current->update();
}
}
}
return self::$current;
}
