function _openid_xri_discovery

OpenID discovery method: perform an XRI discovery.

Return value

An array of discovered services and claimed identifier or NULL. See openid_discovery() for more specific information.

See also

http://openid.net/specs/openid-authentication-2_0.html#discovery

hook_openid_discovery_method_info()

openid_discovery()

File

modules/openid/openid.module, line 463

Code

function _openid_xri_discovery($claimed_id) {
    if (_openid_is_xri($claimed_id)) {
        // Resolve XRI using a proxy resolver (Extensible Resource Identifier (XRI)
        // Resolution Version 2.0, section 11.2 and 14.3).
        $xrds_url = variable_get('xri_proxy_resolver', 'http://xri.net/') . rawurlencode($claimed_id) . '?_xrd_r=application/xrds+xml';
        $discovery = _openid_xrds_discovery($xrds_url);
        if (!empty($discovery['services']) && is_array($discovery['services'])) {
            foreach ($discovery['services'] as $i => &$service) {
                $status = $service['xrd']->children(OPENID_NS_XRD)->Status;
                if ($status && $status->attributes()->cid == 'verified') {
                    $service['claimed_id'] = openid_normalize((string) $service['xrd']->children(OPENID_NS_XRD)->CanonicalID);
                }
                else {
                    // Ignore service if the Canonical ID could not be verified.
                    unset($discovery['services'][$i]);
                }
            }
            if (!empty($discovery['services'])) {
                return $discovery;
            }
        }
    }
}