| <?php | |
| /** | |
| * Code for using a proxy XRI resolver. | |
| */ | |
| require_once 'Auth/Yadis/XRDS.php'; | |
| require_once 'Auth/Yadis/XRI.php'; | |
| class Auth_Yadis_ProxyResolver { | |
| function Auth_Yadis_ProxyResolver($fetcher, $proxy_url = null) | |
| { | |
| $this->fetcher = $fetcher; | |
| $this->proxy_url = $proxy_url; | |
| if (!$this->proxy_url) { | |
| $this->proxy_url = Auth_Yadis_getDefaultProxy(); | |
| } | |
| } | |
| function queryURL($xri, $service_type = null) | |
| { | |
| // trim off the xri:// prefix | |
| $qxri = substr(Auth_Yadis_toURINormal($xri), 6); | |
| $hxri = $this->proxy_url . $qxri; | |
| $args = array( | |
| '_xrd_r' => 'application/xrds+xml' | |
| ); | |
| if ($service_type) { | |
| $args['_xrd_t'] = $service_type; | |
| } else { | |
| // Don't perform service endpoint selection. | |
| $args['_xrd_r'] .= ';sep=false'; | |
| } | |
| $query = Auth_Yadis_XRIAppendArgs($hxri, $args); | |
| return $query; | |
| } | |
| function query($xri, $service_types, $filters = array()) | |
| { | |
| $services = array(); | |
| $canonicalID = null; | |
| foreach ($service_types as $service_type) { | |
| $url = $this->queryURL($xri, $service_type); | |
| $response = $this->fetcher->get($url); | |
| if ($response->status != 200 and $response->status != 206) { | |
| continue; | |
| } | |
| $xrds = Auth_Yadis_XRDS::parseXRDS($response->body); | |
| if (!$xrds) { | |
| continue; | |
| } | |
| $canonicalID = Auth_Yadis_getCanonicalID($xri, | |
| $xrds); | |
| if ($canonicalID === false) { | |
| return null; | |
| } | |
| $some_services = $xrds->services($filters); | |
| $services = array_merge($services, $some_services); | |
| // TODO: | |
| // * If we do get hits for multiple service_types, we're | |
| // almost certainly going to have duplicated service | |
| // entries and broken priority ordering. | |
| } | |
| return array($canonicalID, $services); | |
| } | |
| } | |