identity_url = null;
$this->server_url = null;
$this->type_uris = array();
$this->delegate = null;
$this->canonicalID = null;
$this->used_yadis = false; // whether this came from an XRDS
}
function usesExtension($extension_uri)
{
return in_array($extension_uri, $this->type_uris);
}
function parseService($yadis_url, $uri, $type_uris, $service_element)
{
// Set the state of this object based on the contents of the
// service element.
$this->type_uris = $type_uris;
$this->identity_url = $yadis_url;
$this->server_url = $uri;
$this->delegate = Auth_OpenID_ServiceEndpoint::findDelegate(
$service_element);
$this->used_yadis = true;
}
function findDelegate($service)
{
// Extract a openid:Delegate value from a Yadis Service
// element. If no delegate is found, returns null.
// Try to register new namespace.
$service->parser->registerNamespace('openid',
'http://openid.net/xmlns/1.0');
// XXX: should this die if there is more than one delegate
// element?
$delegates = $service->getElements("openid:Delegate");
if ($delegates) {
return $service->parser->content($delegates[0]);
} else {
return null;
}
}
function getServerID()
{
// Return the identifier that should be sent as the
// openid.identity_url parameter to the server.
if ($this->delegate === null) {
if ($this->canonicalID) {
return $this->canonicalID;
} else {
return $this->identity_url;
}
} else {
return $this->delegate;
}
}
function fromHTML($uri, $html)
{
// Parse the given document as HTML looking for an OpenID
$urls = Auth_OpenID_legacy_discover($html);
if ($urls === false) {
return null;
}
list($delegate_url, $server_url) = $urls;
$service = new Auth_OpenID_ServiceEndpoint();
$service->identity_url = $uri;
$service->delegate = $delegate_url;
$service->server_url = $server_url;
$service->type_uris = array(_OPENID_1_0_TYPE);
return $service;
}
}
function filter_MatchesAnyOpenIDType(&$service)
{
$uris = $service->getTypes();
foreach ($uris as $uri) {
if (in_array($uri,
array(_OPENID_1_0_TYPE,
_OPENID_1_1_TYPE,
_OPENID_1_2_TYPE))) {
return true;
}
}
return false;
}
function Auth_OpenID_makeOpenIDEndpoints($uri, $endpoints)
{
$s = array();
if (!$endpoints) {
return $s;
}
foreach ($endpoints as $service) {
$type_uris = $service->getTypes();
$uris = $service->getURIs();
// If any Type URIs match and there is an endpoint URI
// specified, then this is an OpenID endpoint
if ($type_uris &&
$uris) {
foreach ($uris as $service_uri) {
$openid_endpoint = new Auth_OpenID_ServiceEndpoint();
$openid_endpoint->parseService($uri,
$service_uri,
$type_uris,
$service);
$s[] = $openid_endpoint;
}
}
}
return $s;
}
function Auth_OpenID_discoverWithYadis($uri, &$fetcher)
{
// Discover OpenID services for a URI. Tries Yadis and falls back
// on old-style discovery if Yadis fails.
// Might raise a yadis.discover.DiscoveryFailure if no document
// came back for that URI at all. I don't think falling back to
// OpenID 1.0 discovery on the same URL will help, so don't bother
// to catch it.
$openid_services = array();
$http_response = null;
$response = Services_Yadis_Yadis::discover($uri, $http_response,
$fetcher);
if ($response) {
$identity_url = $response->uri;
$openid_services =
$response->xrds->services(array('filter_MatchesAnyOpenIDType'));
}
if (!$openid_services) {
return @Auth_OpenID_discoverWithoutYadis($uri,
$fetcher);
}
if (!$openid_services) {
$body = $response->body;
// Try to parse the response as HTML to get OpenID 1.0/1.1
//
$service = Auth_OpenID_ServiceEndpoint::fromHTML($identity_url,
$body);
if ($service !== null) {
$openid_services = array($service);
}
} else {
$openid_services = Auth_OpenID_makeOpenIDEndpoints($response->uri,
$openid_services);
}
return array($identity_url, $openid_services, $http_response);
}
function _Auth_OpenID_discoverServiceList($uri, &$fetcher)
{
list($url, $services, $resp) = Auth_OpenID_discoverWithYadis($uri,
$fetcher);
return $services;
}
function _Auth_OpenID_discoverXRIServiceList($uri, &$fetcher)
{
list($url, $services, $resp) = _Auth_OpenID_discoverXRI($uri,
$fetcher);
return $services;
}
function Auth_OpenID_discoverWithoutYadis($uri, &$fetcher)
{
$http_resp = @$fetcher->get($uri);
if ($http_resp->status != 200) {
return array(null, array(), $http_resp);
}
$identity_url = $http_resp->final_url;
// Try to parse the response as HTML to get OpenID 1.0/1.1
$endpoint = new Auth_OpenID_ServiceEndpoint();
$service = $endpoint->fromHTML($identity_url, $http_resp->body);
if ($service === null) {
$openid_services = array();
} else {
$openid_services = array($service);
}
return array($identity_url, $openid_services, $http_resp);
}
function _Auth_OpenID_discoverXRI($iname, &$fetcher)
{
$services = new Services_Yadis_ProxyResolver($fetcher);
list($canonicalID, $service_list) = $services->query($iname,
array(_OPENID_1_0_TYPE,
_OPENID_1_1_TYPE,
_OPENID_1_2_TYPE),
array('filter_MatchesAnyOpenIDType'));
$endpoints = Auth_OpenID_makeOpenIDEndpoints($iname, $service_list);
for ($i = 0; $i < count($endpoints); $i++) {
$endpoints[$i]->canonicalID = $canonicalID;
}
// FIXME: returned xri should probably be in some normal form
return array($iname, $endpoints, null);
}
function Auth_OpenID_discover($uri, &$fetcher)
{
return @Auth_OpenID_discoverWithYadis($uri, $fetcher);
}
?>