gnu-social/plugins/LRDD/LRDDPlugin.php

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<?php
/*
* GNU Social - a federating social network
* Copyright (C) 2013, Free Software Foundation, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Implements Link-based Resource Descriptor Discovery based on RFC6415,
* Web Host Metadata, i.e. the predecessor to WebFinger resource discovery.
*
2013-10-14 23:20:36 +01:00
* @package GNUsocial
* @author Mikael Nordfeldth <mmn@hethane.se>
*/
if (!defined('GNUSOCIAL')) { exit(1); }
set_include_path(get_include_path() . PATH_SEPARATOR . __DIR__ . '/extlib/');
class LRDDPlugin extends Plugin
{
const PLUGIN_VERSION = '2.0.0';
public function onAutoload($cls)
{
switch ($cls) {
case 'XML_XRD':
require_once __DIR__ . '/extlib/XML/XRD.php';
return false;
}
return parent::onAutoload($cls);
}
public function onStartDiscoveryMethodRegistration(Discovery $disco) {
$disco->registerMethod('LRDDMethod_WebFinger');
}
public function onEndDiscoveryMethodRegistration(Discovery $disco) {
$disco->registerMethod('LRDDMethod_HostMeta');
$disco->registerMethod('LRDDMethod_LinkHeader');
$disco->registerMethod('LRDDMethod_LinkHTML');
}
public function onPluginVersion(array &$versions): bool
{
$versions[] = array('name' => 'LRDD',
'version' => self::PLUGIN_VERSION,
'author' => 'Mikael Nordfeldth',
'homepage' => GNUSOCIAL_ENGINE_URL,
// TRANS: Plugin description.
'rawdescription' => _m('Implements LRDD support for GNU Social.'));
return true;
}
/**
* Fetch all the aliases of some remote profile
*
* @param string $uri profile's URI
* @return array|null aliases
* @throws Exception (If the Discovery's HTTP requests fail)
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public static function grab_profile_aliases(string $uri): ?array
{
$disco = new Discovery();
$xrd = $disco->lookup($uri);
$all_ids = array_merge([$xrd->subject], $xrd->aliases);
if (!in_array($uri, $all_ids)) {
$this->log(LOG_INFO, 'The original URI was not listed itself when doing discovery on it!');
return null;
}
return $all_ids;
}
}