/**
* If there is a new session for this user/server, append the token request to the page
*/
public static function appendTokenRequest()
{
$cmd = self::$cmd;
$session = LigminchaGlobalSession::getCurrent();
// If there is a current session,
if ($session) {
// If the session is newly created, get an SSO cookie under ligmincha.org for this session ID
// - newly created sessions have no expiry
// - this is done by appending a 1x1pixel iFrame to the output that will request a token cookie from ligmincha.org
if ($session->flag(LG_NEW)) {
// We always set a local cookie as well so we can get the current session ID from it
self::setCookie($session->id);
// Otherwise we need to make the request to the master in the iFrame
if (!LigminchaGlobalServer::getCurrent()->isMaster) {
$url = LigminchaGlobalServer::masterDomain();
$iframe = "<iframe src=\"http://{$url}?{$cmd}={$session->id}\" frameborder=\"0\" width=\"1\" height=\"1\"></iframe>";
$app = JFactory::getApplication('site');
$app->setBody(str_replace('</body>', "{$iframe}\n</body>", $app->getBody()));
lgDebug("SSO cookie request iFrame added to page ({$url})", $session);
}
// Set the expiry to a longer time that distributed sessions last
// - after it expires, user needs to come back to have another made (may not need to log in again)
$session->expire = LigminchaGlobalObject::timestamp() + LG_SESSION_DURATION;
// Now that the session is real it can route
$session->flag(LG_LOCAL, false);
// Write changes to the session object into the distributed database
$session->update();
}
}
}
/**
* Send all queued sync-objects
*/
public static function sendQueue()
{
// Get all LG_SYNC items, bail if none
if (!($queue = LigminchaGlobalSync::select())) {
return false;
}
// Make data streams for each target from the sync objects
$streams = array();
$server = LigminchaGlobalServer::getCurrent()->id;
$session = LigminchaGlobalSession::getCurrent() ? LigminchaGlobalSession::getCurrent()->id : 0;
foreach ($queue as $sync) {
$target = LigminchaGlobalServer::newFromId($sync->ref1)->id;
if (array_key_exists($target, $streams)) {
$streams[$target][] = $sync;
} else {
$streams[$target] = array(0, $server, $session, $sync);
}
}
//print '<pre>'; print_r($streams); print '</pre>';
// Encode and send each stream
foreach ($streams as $target => $stream) {
// Get the target domain from it's tag
$url = LigminchaGlobalServer::newFromId($target)->tag;
// Zip up the data in JSON format
// TODO: encrypt using shared secret or public key
$data = self::encodeData($stream);
// If we're standalone or the master, ensure no data is routed to the master, mark it as successful so the sync objects are cleared
if (LigminchaGlobalServer::getCurrent()->isMaster && $url == LigminchaGlobalServer::masterDomain()) {
$result = LG_SUCCESS;
} else {
$result = self::post($url, array(self::$cmd => $data));
}
// If result is success, remove all sync objects destined for this target server
if ($result == LG_SUCCESS) {
LigminchaGlobalDistributed::del(array('type' => LG_SYNC, 'ref1' => $target), false, true);
} else {
die(lgDebug("Failed to post outgoing sync data to {$url} result({$result})"));
}
}
return true;
}
