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