/**
* Get/create current session instance
*/
public static function getCurrent()
{
$update = false;
if (is_null(self::$current)) {
// If there's a current user, get/make a current session
if (LigminchaGlobalUser::getCurrent()) {
// None found, create new
// - there will already be a current session established if one existed thanks to SSO::makeSessionFromCookie
self::$current = new LigminchaGlobalSession();
// Doesn't exist, make the data structure for our new server object
self::$current->ref1 = LigminchaGlobalServer::getCurrent()->id;
self::$current->tag = self::getBrowser();
// Session only lives for five seconds in this initial form and doesn't route
self::$current->expire = self::timestamp() + 2;
self::$current->flag(LG_LOCAL, true);
self::$current->flag(LG_PRIVATE, true);
// Save our new instance to the DB
$update = true;
// And save the ID in the SSO cookie
LigminchaGlobalSSO::setCookie(self::$current->id);
lgDebug('New session created and SSO cookie set', self::$current);
} else {
self::$current = false;
}
}
// Update the expiry if the session existed (but only if it's increasing by more than a minute to avoid sync traffic)
if (self::$current && !self::$current->flag(LG_NEW)) {
$expiry = self::timestamp() + LG_SESSION_DURATION;
if ($expiry - self::$current->expire > 60) {
self::$current->expire = $expiry;
$update = true;
}
}
// Avoid multiple calls to update above
if ($update) {
self::$current->update();
}
return self::$current;
}
/**
* 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);
}
}
