function __construct($callback = null, $ttl = -1)
{
//Maximum entropy, minimum data
$this->id = \Radical\Basic\String\Random::GenerateBase64(6) . dechex(crc32(session_id() . time()));
$len = strlen($this->id) - rand(0, 4);
$this->id = substr($this->id, 0, $len);
$this->key = \Radical\Basic\String\Random::GenerateBytes(32);
$this->callback = $callback;
if ($ttl > 0) {
$this->expires = $ttl + time();
}
KeyStorage::AddKey($this);
}
protected function _processEvent($post = true)
{
$id = Key::fromRequest($post);
if (!empty($id)) {
$key = KeyStorage::GetKey($id);
if ($key) {
$this->eventKey = $key;
$result = $key->Callback();
if ($result) {
return $result;
}
} else {
throw new \Exception('Event invalid (session timeout?)');
}
}
}
function __construct($handler, $method = 'execute')
{
parent::__construct();
//store even description
$this->eventHandler = $handler;
$this->eventMethod = $method;
//Build security field
$securityField = KeyStorage::newKey(array($this, 'Execute'));
//Event details
$this->hidden(self::EVENT_HANDLER, $securityField->Store(@serialize($handler)));
$this->hidden(self::EVENT_METHOD, base64_encode($securityField->Encrypt($this->eventMethod)));
//Security event
$this->Add($this->getSecurityFieldElement($securityField));
//Ensure its post, security fields only work on post requests currently.
$this->method('post');
if (isset($_SERVER['QUERY_STRING'])) {
$this->action('?' . $_SERVER['QUERY_STRING']);
}
}
private function data($query_params = array())
{
//Build security field
if ($this->securityField === null) {
$this->securityField = KeyStorage::newKey(array($this, 'Execute'));
$this->eHandler = $this->securityField->Store(serialize($this->object));
$this->eMethod = base64_encode($this->securityField->Encrypt($this->method));
}
$g = $_GET;
if (isset($g['error'])) {
unset($g['error']);
}
if (isset($g['eid'])) {
unset($g['eid']);
}
//Event details
$qs = array_merge($g, $query_params);
$qs[self::EVENT_HANDLER] = $this->eHandler;
$qs[self::EVENT_METHOD] = $this->eMethod;
$qs[Key::FIELD_NAME] = $this->securityField->getId();
$str_qs = '?' . http_build_query($qs);
return $str_qs;
}
