/**
* Obtains the OpenID services for particular identifier by scanning for link
* elements in the returned document.
*
* Note that this function does not use the YADIS protocol to scan for services.
* To use the YADIS protocol, use {@link discovery_get_services()}.
*
* @param string $url the URL
* @return XRDSServices an array of discovered services, or an empty array if no services
* are found
*/
public function discoverByHTMLLinks($url)
{
$services = new XRDSServices();
$response = $this->request($url);
$html = $response->getBody();
$uri = $this->getLinkRel('openid2.provider', $html);
$delegate = $this->getLinkRel('openid2.local_id', $html);
if ($uri) {
$service = array('type' => array('http://specs.openid.net/auth/2.0/signon'), 'uri' => array($uri));
if ($delegate) {
$service['localid'] = $delegate;
}
$services->add($service, false);
}
$uri = $this->getLinkRel('openid.server', $html);
$delegate = $this->getLinkRel('openid.delegate', $html);
if ($uri) {
$service = array('type' => array('http://openid.net/signon/1.0'), 'uri' => array($uri));
if ($delegate) {
$service['localid'] = $delegate;
}
$services->add($service, false);
}
return $services;
}
/**
* Parses an XRDS document and returns the discovered services.
*
* @return XRDSServices the discovered services
*/
public function parse()
{
while ($this->reader->read()) {
if ($this->reader->nodeType == XMLReader::ELEMENT && strtolower($this->reader->namespaceURI) == strtolower(self::XRD2_NS)) {
switch ($this->reader->localName) {
case 'Service':
$this->services->add($this->parseService());
break;
}
}
}
return $this->services;
}
