/**
* Collect authentication machanisms.
*
* @param XMLEvent $event
* @return void
*/
public function collectMechanisms(XMLEvent $event)
{
if ($this->getConnection()->isReady() && false === $this->isAuthenticated()) {
/* @var $element \DOMElement */
list($element) = $event->getParameters();
$this->blocking = true;
if (false === $event->isStartTag()) {
$this->mechanisms[] = strtolower($element->nodeValue);
}
}
}
/**
* Create exception from XMLEvent object.
*
* @param \Fabiang\Xmpp\Event\XMLEvent $event XMLEvent object
* @return static
*/
public static function createFromEvent(XMLEvent $event)
{
/* @var $element \DOMElement */
list($element) = $event->getParameters();
/* @var $first \DOMElement */
$first = $element->firstChild;
if (null !== $first && XML_ELEMENT_NODE === $first->nodeType) {
$message = 'Stream Error: "' . $first->localName . '"';
} else {
$message = 'Generic stream error';
}
$exception = new static($message);
$exception->setContent($element->ownerDocument->saveXML($element));
return $exception;
}
/**
* Challenge string received.
*
* @param XMLEvent $event XML event
* @return void
*/
public function challenge(XMLEvent $event)
{
if ($event->isEndTag()) {
list($element) = $event->getParameters();
$challenge = XML::base64Decode($element->nodeValue);
$values = $this->parseCallenge($challenge);
if (isset($values['nonce'])) {
$send = '<response xmlns="urn:ietf:params:xml:ns:xmpp-sasl">' . $this->response($values) . '</response>';
} elseif (isset($values['rspauth'])) {
$send = '<response xmlns="urn:ietf:params:xml:ns:xmpp-sasl"/>';
} else {
throw new AuthenticationErrorException("Error when receiving challenge: \"{$challenge}\"");
}
$this->getConnection()->send($send);
}
}
