a0e107f17f
New plugins:
* LRDD
LRDD implements client-side RFC6415 and RFC7033 resource descriptor
discovery procedures. I.e. LRDD, host-meta and WebFinger stuff.
OStatus and OpenID now depend on the LRDD plugin (XML_XRD).
* WebFinger
This plugin implements the server-side of RFC6415 and RFC7033. Note:
WebFinger technically doesn't handle XRD, but we serve both that and
JRD (JSON Resource Descriptor), depending on Accept header and one
ugly hack to check for old StatusNet installations.
WebFinger depends on LRDD.
We might make this even prettier by using Net_WebFinger, but it is not
currently RFC7033 compliant (no /.well-known/webfinger resource GETs).
Disabling the WebFinger plugin would effectively render your site non-
federated (which might be desired on a private site).
Disabling the LRDD plugin would make your site unable to do modern web
URI lookups (making life just a little bit harder).
61 lines
2.1 KiB
PHP
61 lines
2.1 KiB
PHP
<?php
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/**
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* Implementation of discovery using host-meta file
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*
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* Discovers resource descriptor file for a user by going to the
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* organization's host-meta file and trying to find a template for LRDD.
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*
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* @category Discovery
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* @package StatusNet
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* @author James Walker <james@status.net>
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* @copyright 2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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class LRDDMethod_HostMeta extends LRDDMethod
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{
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/**
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* For RFC6415 and HTTP URIs, fetch the host-meta file
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* and look for LRDD templates
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*/
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public function discover($uri)
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{
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// This is allowed for RFC6415 but not the 'WebFinger' RFC7033.
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$try_schemes = array('https', 'http');
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$scheme = mb_strtolower(parse_url($uri, PHP_URL_SCHEME));
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switch ($scheme) {
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case 'acct':
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if (!Discovery::isAcct($uri)) {
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throw new Exception('Bad resource URI: '.$uri);
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}
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// We can't use parse_url data for this, since the 'host'
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// entry is only set if the scheme has '://' after it.
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list($user, $domain) = explode('@', parse_url($uri, PHP_URL_PATH));
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break;
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case 'http':
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case 'https':
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$domain = mb_strtolower(parse_url($uri, PHP_URL_HOST));
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$try_schemes = array($scheme);
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break;
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default:
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throw new Exception('Unable to discover resource descriptor endpoint.');
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}
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foreach ($try_schemes as $scheme) {
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$url = $scheme . '://' . $domain . '/.well-known/host-meta';
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try {
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$response = self::fetchUrl($url);
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$this->xrd->loadString($response->getBody());
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} catch (Exception $e) {
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common_debug('LRDD could not load resource descriptor: '.$url.' ('.$e->getMessage().')');
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continue;
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}
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return $this->xrd->links;
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}
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throw new Exception('Unable to retrieve resource descriptor links.');
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}
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}
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