forked from GNUsocial/gnu-social
122 lines
4.5 KiB
PHP
122 lines
4.5 KiB
PHP
<?php
|
|
/*
|
|
* GNU social - a federating social network
|
|
* Copyright (C) 2013-2014, 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/>.
|
|
*/
|
|
|
|
/**
|
|
* Uses WebFinger to implement remote notice retrieval for GNU social.
|
|
*
|
|
* Depends on: WebFinger plugin
|
|
*
|
|
* @package GNUsocial
|
|
* @author Mikael Nordfeldth <mmn@hethane.se>
|
|
*/
|
|
|
|
if (!defined('GNUSOCIAL')) { exit(1); }
|
|
|
|
class FetchRemotePlugin extends Plugin
|
|
{
|
|
const PLUGIN_VERSION = '2.0.0';
|
|
|
|
static function fetchNoticeFromUrl($url)
|
|
{
|
|
if (!common_valid_http_url($url)) {
|
|
throw new InvalidUrlException($url);
|
|
}
|
|
$host = parse_url($url, PHP_URL_HOST);
|
|
|
|
// TODO: try to fetch directly, either by requesting Atom or
|
|
// Link headers/<head> elements with rel=alternate and compare
|
|
// the remote domain name with the notice URL's.
|
|
|
|
if (!$stored instanceof Notice) {
|
|
common_log(LOG_INFO, 'Could not fetch remote notice from URL: '._ve($url));
|
|
throw new ServerException('Could not fetch remote notice.');
|
|
}
|
|
return $stored;
|
|
}
|
|
|
|
public function onFetchRemoteNoticeWithSource($uri, Profile $source, &$stored)
|
|
{
|
|
if (common_valid_http_url($uri) && !Event::handle('FetchRemoteNoticeFromUrl', array($url, &$stored))) {
|
|
// Woopi, we got it straight from a URL-formatted URI!
|
|
return false;
|
|
}
|
|
|
|
// Let's assume we can only do this over HTTPS and a proper
|
|
// WebFinger (RFC7033) endpoint on /.well-known/webfinger
|
|
try {
|
|
$source_url = parse_url($source->getUrl());
|
|
} catch (InvalidUrlException $e) {
|
|
return true;
|
|
}
|
|
if ($source_url['scheme'] !== 'https') {
|
|
common_debug('Will not try to fetch remote notice from non-HTTPS capable profile source');
|
|
return true;
|
|
}
|
|
|
|
try {
|
|
$port = isset($source_url['port']) ? ":{$source_url['port']}" : '';
|
|
$rfc7033 = "https://{$source_url['host']}{$port}/.well-known/webfinger";
|
|
$params = ['resource' => $uri];
|
|
common_debug(__METHOD__ . ": getting json data about notice from: {$rfc7033}?resource=$uri");
|
|
$json = HTTPClient::quickGetJson($rfc7033, $params);
|
|
} catch (Exception $e) {
|
|
// NOPE NOPE NOPE NOPE
|
|
// couldn't get remote data about this notice's URI
|
|
// FIXME: try later?
|
|
return true;
|
|
}
|
|
|
|
if (!isset($json->aliases)) {
|
|
// FIXME: malformed json for our current use, but maybe we could find rel="alternate" type="text/html"?
|
|
return true;
|
|
}
|
|
|
|
common_debug(__METHOD__ . ": Found these aliases: "._ve($json->aliases));
|
|
foreach ($json->aliases as $alias) {
|
|
try {
|
|
$stored = self::fetchNoticeFromUrl($url);
|
|
if ($stored instanceof Notice) {
|
|
// we're done here! all good, let's get back to business
|
|
return false;
|
|
}
|
|
} catch (InvalidUrlException $e) {
|
|
/// mmmmye, aliases might not always be HTTP(S) URLs.
|
|
} catch (Exception $e) {
|
|
// oh well, try the next one and see if it works better.
|
|
common_debug(__METHOD__ . ": {$e->getMessage()}");
|
|
}
|
|
}
|
|
|
|
// Nothing found, return true to continue processing the event
|
|
return true;
|
|
}
|
|
|
|
public function onPluginVersion(array &$versions): bool
|
|
{
|
|
$versions[] = array('name' => 'FetchRemote',
|
|
'version' => self::PLUGIN_VERSION,
|
|
'author' => 'Mikael Nordfeldth',
|
|
'homepage' => GNUSOCIAL_ENGINE_URL,
|
|
// TRANS: Plugin description.
|
|
'rawdescription' => _m('Retrieves remote notices (and serves local) via WebFinger'));
|
|
|
|
return true;
|
|
}
|
|
}
|