gnu-social/plugins/ActivityPub/Util/DiscoveryHints.php

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2021-10-27 04:14:01 +01:00
<?php
declare(strict_types = 1);
namespace Plugin\ActivityPub\Util;
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social 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.
//
// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
use App\Core\Event;
use App\Core\HTTPClient;
use Component\FreeNetwork\Util\Discovery;
use Component\FreeNetwork\Util\WebfingerResource\WebfingerResourceActor;
use Mf2 as Mf2;
use XML_XRD;
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Evan Prodromou
* @author Brion Vibber
* @author James Walker
* @author Siebrand Mazeland
* @author Mikael Nordfeldth
* @author Diogo Cordeiro
* @copyright 2010, 2019, 2021 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
class DiscoveryHints
{
public static function fromXRD(XML_XRD $xrd)
{
$hints = [];
if (Event::handle('StartDiscoveryHintsFromXRD', [$xrd, &$hints])) {
foreach ($xrd->links as $link) {
if ($link->rel === 'self' && $link->type === 'application/activity+json') {
$hints['activitypub'] = $link->href;
break;
}
}
Event::handle('EndDiscoveryHintsFromXRD', [$xrd, &$hints]);
}
return $hints;
}
}
//class DiscoveryHints
//{
// public static function fromXRD(XML_XRD $xrd)
// {
// $hints = [];
//
// if (Event::handle('StartDiscoveryHintsFromXRD', [$xrd, &$hints])) {
// foreach ($xrd->links as $link) {
// switch ($link->rel) {
// case WebfingerResourceActor::PROFILEPAGE:
// $hints['profileurl'] = $link->href;
// break;
// case Discovery::UPDATESFROM:
// if (empty($link->type) || $link->type == 'application/atom+xml') {
// $hints['feedurl'] = $link->href;
// }
// break;
// case Discovery::HCARD:
// case Discovery::MF2_HCARD:
// $hints['hcard'] = $link->href;
// break;
// default:
// break;
// }
// }
// Event::handle('EndDiscoveryHintsFromXRD', [$xrd, &$hints]);
// }
//
// return $hints;
// }
//
// public static function fromHcardUrl($url)
// {
// $response = HTTPClient::get($url, ['headers' => ['Accept' => 'text/html,application/xhtml+xml']]);
//
// if (!HTTPClient::statusCodeIsOkay($response)) {
// return null;
// }
//
// return self::hcardHints(
// $response->getContent(),
// HTTPClient::getEffectiveUrl($response)
// );
// }
//
// public static function hcardHints($body, $url)
// {
// $hcard = self::hcard($body, $url);
//
// if (empty($hcard)) {
// return [];
// }
//
// $hints = [];
//
// // XXX: don't copy stuff into an array and then copy it again
//
// if (array_key_exists('nickname', $hcard) && !empty($hcard['nickname'][0])) {
// $hints['nickname'] = $hcard['nickname'][0];
// }
//
// if (array_key_exists('name', $hcard) && !empty($hcard['name'][0])) {
// $hints['fullname'] = $hcard['name'][0];
// }
//
// if (array_key_exists('photo', $hcard) && count($hcard['photo'])) {
// $hints['avatar'] = $hcard['photo'][0];
// }
//
// if (array_key_exists('note', $hcard) && !empty($hcard['note'][0])) {
// $hints['bio'] = $hcard['note'][0];
// }
//
// if (array_key_exists('adr', $hcard) && !empty($hcard['adr'][0])) {
// $hints['location'] = $hcard['adr'][0]['value'];
// }
//
// if (array_key_exists('url', $hcard) && !empty($hcard['url'][0])) {
// $hints['homepage'] = $hcard['url'][0];
// }
//
// return $hints;
// }
//
// private static function hcard($body, $url)
// {
// $mf2 = new Mf2\Parser($body, $url);
// $mf2 = $mf2->parse();
//
// if (empty($mf2['items'])) {
// return null;
// }
//
// $hcards = [];
//
// foreach ($mf2['items'] as $item) {
// if (!in_array('h-card', $item['type'])) {
// continue;
// }
//
// // We found a match, return it immediately
// if (isset($item['properties']['url']) && in_array($url, $item['properties']['url'])) {
// return $item['properties'];
// }
//
// // Let's keep all the hcards for later, to return one of them at least
// $hcards[] = $item['properties'];
// }
//
// // No match immediately for the url we expected, but there were h-cards found
// if (count($hcards) > 0) {
// return $hcards[0];
// }
//
// return null;
// }
//}