git.roojs.org Git - web.mtrack/blob - Auth/Yadis/XRIRes.php

   1 <?php
   2
   3 /**
   4  * Code for using a proxy XRI resolver.
   5  */
   6
   7 require_once 'Auth/Yadis/XRDS.php';
   8 require_once 'Auth/Yadis/XRI.php';
   9
  10 class Auth_Yadis_ProxyResolver {
  11     function Auth_Yadis_ProxyResolver(&$fetcher, $proxy_url = null)
  12     {
  13         $this->fetcher =& $fetcher;
  14         $this->proxy_url = $proxy_url;
  15         if (!$this->proxy_url) {
  16             $this->proxy_url = Auth_Yadis_getDefaultProxy();
  17         }
  18     }
  19
  20     function queryURL($xri, $service_type = null)
  21     {
  22         // trim off the xri:// prefix
  23         $qxri = substr(Auth_Yadis_toURINormal($xri), 6);
  24         $hxri = $this->proxy_url . $qxri;
  25         $args = array(
  26                       '_xrd_r' => 'application/xrds+xml'
  27                       );
  28
  29         if ($service_type) {
  30             $args['_xrd_t'] = $service_type;
  31         } else {
  32             // Don't perform service endpoint selection.
  33             $args['_xrd_r'] .= ';sep=false';
  34         }
  35
  36         $query = Auth_Yadis_XRIAppendArgs($hxri, $args);
  37         return $query;
  38     }
  39
  40     function query($xri, $service_types, $filters = array())
  41     {
  42         $services = array();
  43         $canonicalID = null;
  44         foreach ($service_types as $service_type) {
  45             $url = $this->queryURL($xri, $service_type);
  46             $response = $this->fetcher->get($url);
  47             if ($response->status != 200 and $response->status != 206) {
  48                 continue;
  49             }
  50             $xrds = Auth_Yadis_XRDS::parseXRDS($response->body);
  51             if (!$xrds) {
  52                 continue;
  53             }
  54             $canonicalID = Auth_Yadis_getCanonicalID($xri,
  55                                                          $xrds);
  56
  57             if ($canonicalID === false) {
  58                 return null;
  59             }
  60
  61             $some_services = $xrds->services($filters);
  62             $services = array_merge($services, $some_services);
  63             // TODO:
  64             //  * If we do get hits for multiple service_types, we're
  65             //    almost certainly going to have duplicated service
  66             //    entries and broken priority ordering.
  67         }
  68         return array($canonicalID, $services);
  69     }
  70 }
  71
  72 ?>