987 lines
34 KiB
PHP
Executable File
987 lines
34 KiB
PHP
Executable File
<?php
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/**
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* GNU social - a federating social network
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*
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* ActivityPubPlugin implementation for GNU Social
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Plugin
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* @package GNUsocial
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @author Daniel Supernault <danielsupernault@gmail.com>
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* @copyright 2018 Free Software Foundation http://fsf.org
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link https://www.gnu.org/software/social/
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*/
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if (!defined('GNUSOCIAL')) {
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exit(1);
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}
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// Ensure proper timezone
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date_default_timezone_set('GMT');
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// Import required files by the plugin
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require_once __DIR__ . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php';
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require_once __DIR__ . DIRECTORY_SEPARATOR . 'utils' . DIRECTORY_SEPARATOR . 'discoveryhints.php';
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require_once __DIR__ . DIRECTORY_SEPARATOR . 'utils' . DIRECTORY_SEPARATOR . 'AcceptHeader.php';
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require_once __DIR__ . DIRECTORY_SEPARATOR . 'utils' . DIRECTORY_SEPARATOR . 'explorer.php';
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require_once __DIR__ . DIRECTORY_SEPARATOR . 'utils' . DIRECTORY_SEPARATOR . 'postman.php';
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require_once __DIR__ . DIRECTORY_SEPARATOR . 'utils' . DIRECTORY_SEPARATOR . 'inbox_handler.php';
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// So that this isn't hardcoded everywhere
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define('ACTIVITYPUB_BASE_ACTOR_URI', common_root_url().'index.php/user/');
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const ACTIVITYPUB_PUBLIC_TO = ['https://www.w3.org/ns/activitystreams#Public',
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'Public',
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'as:Public'
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];
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/**
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* @category Plugin
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* @package GNUsocial
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://www.gnu.org/software/social/
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*/
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class ActivityPubPlugin extends Plugin
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{
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public static $store_images_from_remote_notes_attachments = true;
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/**
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* Returns a Actor's URI from its local $profile
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* Works both for local and remote users.
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*
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @param Profile $profile Actor's local profile
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* @return string Actor's URI
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*/
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public static function actor_uri($profile)
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{
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if ($profile->isLocal()) {
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return ACTIVITYPUB_BASE_ACTOR_URI.$profile->getID();
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} else {
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return $profile->getUri();
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}
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}
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/**
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* Returns a Actor's URL from its local $profile
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* Works both for local and remote users.
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*
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @param Profile $profile Actor's local profile
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* @return string Actor's URL
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*/
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public static function actor_url($profile)
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{
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return ActivityPubPlugin::actor_uri($profile)."/";
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}
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/**
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* Returns a notice from its URL.
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*
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @param string $url Notice's URL
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* @return Notice The Notice object
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* @throws Exception This function or provides a Notice or fails with exception
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*/
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public static function grab_notice_from_url($url)
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{
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/* Offline Grabbing */
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try {
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// Look for a known remote notice
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return Notice::getByUri($url);
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} catch (Exception $e) {
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// Look for a local notice (unfortunately GNU Social doesn't
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// provide this functionality natively)
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try {
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$candidate = Notice::getByID(intval(substr($url, strlen(common_local_url('shownotice', ['notice' => ''])))));
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if ($candidate->getUrl() == $url) { // Sanity check
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return $candidate;
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} else {
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common_debug('ActivityPubPlugin Notice Grabber: '.$candidate->getUrl(). ' is different of '.$url);
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}
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} catch (Exception $e) {
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common_debug('ActivityPubPlugin Notice Grabber: failed to find: '.$url.' offline.');
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}
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}
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/* Online Grabbing */
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$client = new HTTPClient();
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$headers = [];
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$headers[] = 'Accept: application/ld+json; profile="https://www.w3.org/ns/activitystreams"';
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$headers[] = 'User-Agent: GNUSocialBot v0.1 - https://gnu.io/social';
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$response = $client->get($url, $headers);
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$object = json_decode($response->getBody(), true);
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Activitypub_notice::validate_note($object);
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return Activitypub_notice::create_notice($object);
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}
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/**
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* Route/Reroute urls
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*
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* @param URLMapper $m
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* @return void
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*/
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public function onRouterInitialized(URLMapper $m)
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{
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if (ActivityPubURLMapperOverwrite::should()) {
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ActivityPubURLMapperOverwrite::variable(
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$m,
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'user/:id',
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['id' => '[0-9]+'],
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'apActorProfile'
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);
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// Special route for webfinger purposes
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ActivityPubURLMapperOverwrite::variable(
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$m,
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':nickname',
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['nickname' => Nickname::DISPLAY_FMT],
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'apActorProfile'
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);
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ActivityPubURLMapperOverwrite::variable(
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$m,
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'notice/:id',
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['id' => '[0-9]+'],
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'apNotice'
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);
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}
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$m->connect(
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'user/:id/liked.json',
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['action' => 'apActorLiked'],
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['id' => '[0-9]+']
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);
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$m->connect(
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'user/:id/followers.json',
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['action' => 'apActorFollowers'],
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['id' => '[0-9]+']
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);
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$m->connect(
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'user/:id/following.json',
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['action' => 'apActorFollowing'],
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['id' => '[0-9]+']
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);
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$m->connect(
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'user/:id/inbox.json',
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['action' => 'apInbox'],
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['id' => '[0-9]+']
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);
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$m->connect(
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'user/:id/outbox.json',
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['action' => 'apActorOutbox'],
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['id' => '[0-9]+']
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);
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$m->connect(
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'inbox.json',
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['action' => 'apInbox']
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);
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}
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/**
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* Plugin version information
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*
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* @param array $versions
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* @return boolean hook true
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*/
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public function onPluginVersion(array &$versions)
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{
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$versions[] = [ 'name' => 'ActivityPub',
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'version' => GNUSOCIAL_VERSION,
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'author' => 'Diogo Cordeiro, Daniel Supernault',
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'homepage' => 'https://www.gnu.org/software/social/',
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'rawdescription' => 'Adds ActivityPub Support'];
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return true;
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}
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/**
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* Dummy string on AccountProfileBlock stating that ActivityPub is active
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* this is more of a placeholder for eventual useful stuff ._.
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*
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @return boolean hook return value
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*/
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public function onEndShowAccountProfileBlock(HTMLOutputter $out, Profile $profile)
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{
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if ($profile->isLocal()) {
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return true;
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}
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try {
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$aprofile = Activitypub_profile::getKV('profile_id', $profile->id);
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} catch (NoResultException $e) {
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// Not a remote ActivityPub_profile! Maybe some other network
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// that has imported a non-local user (e.g.: OStatus)?
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return true;
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}
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$out->elementStart('dl', 'entity_tags activitypub_profile');
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$out->element('dt', null, _m('ActivityPub'));
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$out->element('dd', null, _m('Remote Profile'));
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$out->elementEnd('dl');
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}
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/**
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* Make sure necessary tables are filled out.
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*
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* @return boolean hook true
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*/
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public function onCheckSchema()
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{
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$schema = Schema::get();
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$schema->ensureTable('Activitypub_profile', Activitypub_profile::schemaDef());
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$schema->ensureTable('Activitypub_rsa', Activitypub_rsa::schemaDef());
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$schema->ensureTable('Activitypub_pending_follow_requests', Activitypub_pending_follow_requests::schemaDef());
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return true;
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}
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/********************************************************
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* WebFinger Events *
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********************************************************/
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/**
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* Get remote user's ActivityPub_profile via a identifier
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*
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* @author GNU Social
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @param string $arg A remote user identifier
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* @return Activitypub_profile|null Valid profile in success | null otherwise
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*/
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public static function pull_remote_profile($arg)
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{
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if (preg_match('!^((?:\w+\.)*\w+@(?:\w+\.)*\w+(?:\w+\-\w+)*\.\w+)$!', $arg)) {
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// webfinger lookup
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try {
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return Activitypub_profile::ensure_web_finger($arg);
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} catch (Exception $e) {
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common_log(LOG_ERR, 'Webfinger lookup failed for ' .
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$arg . ': ' . $e->getMessage());
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}
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}
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// Look for profile URLs, with or without scheme:
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$urls = array();
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if (preg_match('!^https?://((?:\w+\.)*\w+(?:\w+\-\w+)*\.\w+(?:/\w+)+)$!', $arg)) {
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$urls[] = $arg;
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}
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if (preg_match('!^((?:\w+\.)*\w+(?:\w+\-\w+)*\.\w+(?:/\w+)+)$!', $arg)) {
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$schemes = array('http', 'https');
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foreach ($schemes as $scheme) {
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$urls[] = "$scheme://$arg";
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}
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}
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foreach ($urls as $url) {
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try {
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return Activitypub_profile::fromUri($url);
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} catch (Exception $e) {
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common_log(LOG_ERR, 'Profile lookup failed for ' .
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$arg . ': ' . $e->getMessage());
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}
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}
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return null;
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}
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/**
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* Webfinger matches: @user@example.com or even @user--one.george_orwell@1984.biz
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*
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* @author GNU Social
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* @param string $text The text from which to extract webfinger IDs
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* @param string $preMention Character(s) that signals a mention ('@', '!'...)
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* @return array The matching IDs (without $preMention) and each respective position in the given string.
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*/
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public static function extractWebfingerIds($text, $preMention='@')
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{
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$wmatches = [];
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$result = preg_match_all(
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'/(?<!\S)'.preg_quote($preMention, '/').'('.Nickname::WEBFINGER_FMT.')/',
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$text,
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$wmatches,
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PREG_OFFSET_CAPTURE
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);
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if ($result === false) {
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common_log(LOG_ERR, __METHOD__ . ': Error parsing webfinger IDs from text (preg_last_error=='.preg_last_error().').');
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return [];
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} elseif ($n_matches = count($wmatches)) {
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common_debug(sprintf('Found %d matches for WebFinger IDs: %s', $n_matches, _ve($wmatches)));
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}
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return $wmatches[1];
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}
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/**
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* Profile URL matches: @example.com/mublog/user
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*
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* @author GNU Social
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* @param string $text The text from which to extract URL mentions
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* @param string $preMention Character(s) that signals a mention ('@', '!'...)
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* @return array The matching URLs (without @ or acct:) and each respective position in the given string.
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*/
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public static function extractUrlMentions($text, $preMention='@')
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{
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$wmatches = array();
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// In the regexp below we need to match / _before_ URL_REGEX_VALID_PATH_CHARS because it otherwise gets merged
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// with the TLD before (but / is in URL_REGEX_VALID_PATH_CHARS anyway, it's just its positioning that is important)
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$result = preg_match_all(
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'/(?:^|\s+)'.preg_quote($preMention, '/').'('.URL_REGEX_DOMAIN_NAME.'(?:\/['.URL_REGEX_VALID_PATH_CHARS.']*)*)/',
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$text,
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$wmatches,
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PREG_OFFSET_CAPTURE
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);
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if ($result === false) {
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common_log(LOG_ERR, __METHOD__ . ': Error parsing profile URL mentions from text (preg_last_error=='.preg_last_error().').');
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} elseif (count($wmatches)) {
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common_debug(sprintf('Found %d matches for profile URL mentions: %s', count($wmatches), _ve($wmatches)));
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}
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return $wmatches[1];
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}
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/**
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* Add activity+json mimetype on WebFinger
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*
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @param XML_XRD $xrd
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* @param Managed_DataObject $object
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*/
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public function onEndWebFingerProfileLinks(XML_XRD &$xrd, Managed_DataObject $object)
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{
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if ($object->isPerson()) {
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$link = new XML_XRD_Element_Link(
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'self',
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ActivityPubPlugin::actor_uri($object->getProfile()),
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'application/activity+json'
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);
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$xrd->links[] = clone ($link);
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}
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}
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/**
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* Find any explicit remote mentions. Accepted forms:
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* Webfinger: @user@example.com
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* Profile link: @example.com/mublog/user
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*
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* @author GNU Social
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @param Profile $sender
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* @param string $text input markup text
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* @param array &$mention in/out param: set of found mentions
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* @return boolean hook return value
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*/
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public function onEndFindMentions(Profile $sender, $text, &$mentions)
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{
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$matches = array();
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foreach (self::extractWebfingerIds($text, '@') as $wmatch) {
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list($target, $pos) = $wmatch;
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$this->log(LOG_INFO, "Checking webfinger person '$target'");
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$profile = null;
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try {
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$aprofile = Activitypub_profile::ensure_web_finger($target);
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$profile = $aprofile->local_profile();
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} catch (Exception $e) {
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$this->log(LOG_ERR, "Webfinger check failed: " . $e->getMessage());
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continue;
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}
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assert($profile instanceof Profile);
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$displayName = !empty($profile->nickname) && mb_strlen($profile->nickname) < mb_strlen($target)
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? $profile->getNickname() // TODO: we could do getBestName() or getFullname() here
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: $target;
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$url = $profile->getUri();
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if (!common_valid_http_url($url)) {
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$url = $profile->getUrl();
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}
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$matches[$pos] = array('mentioned' => array($profile),
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'type' => 'mention',
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'text' => $displayName,
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'position' => $pos,
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'length' => mb_strlen($target),
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'url' => $url);
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}
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foreach (self::extractUrlMentions($text) as $wmatch) {
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list($target, $pos) = $wmatch;
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$schemes = array('https', 'http');
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foreach ($schemes as $scheme) {
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$url = "$scheme://$target";
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$this->log(LOG_INFO, "Checking profile address '$url'");
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try {
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$aprofile = Activitypub_profile::fromUri($url);
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$profile = $aprofile->local_profile();
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$displayName = !empty($profile->nickname) && mb_strlen($profile->nickname) < mb_strlen($target) ?
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$profile->nickname : $target;
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$matches[$pos] = array('mentioned' => array($profile),
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'type' => 'mention',
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'text' => $displayName,
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'position' => $pos,
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'length' => mb_strlen($target),
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'url' => $profile->getUrl());
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break;
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} catch (Exception $e) {
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$this->log(LOG_ERR, "Profile check failed: " . $e->getMessage());
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}
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}
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}
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foreach ($mentions as $i => $other) {
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// If we share a common prefix with a local user, override it!
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$pos = $other['position'];
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if (isset($matches[$pos])) {
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$mentions[$i] = $matches[$pos];
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unset($matches[$pos]);
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}
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}
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foreach ($matches as $mention) {
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$mentions[] = $mention;
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}
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return true;
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}
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/**
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* Allow remote profile references to be used in commands:
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* sub update@status.net
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* whois evan@identi.ca
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* reply http://identi.ca/evan hey what's up
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*
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* @author GNU Social
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @param Command $command
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* @param string $arg
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* @param Profile &$profile
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* @return hook return code
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*/
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public function onStartCommandGetProfile($command, $arg, &$profile)
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{
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try {
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$aprofile = $this->pull_remote_profile($arg);
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$profile = $aprofile->local_profile();
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} catch (Exception $e) {
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// No remote ActivityPub profile found
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return true;
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}
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return false;
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}
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/********************************************************
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* Discovery Events *
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********************************************************/
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/**
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* Profile URI for remote profiles.
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*
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* @author GNU Social
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @param Profile $profile
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* @param string $uri in/out
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* @return mixed hook return code
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*/
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public function onStartGetProfileUri(Profile $profile, &$uri)
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{
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$aprofile = Activitypub_profile::getKV('profile_id', $profile->id);
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if ($aprofile instanceof Activitypub_profile) {
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$uri = $aprofile->getUri();
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|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Profile from URI.
|
|
*
|
|
* @author GNU Social
|
|
* @author Diogo Cordeiro <diogo@fc.up.pt>
|
|
* @param string $uri
|
|
* @param Profile &$profile in/out param: Profile got from URI
|
|
* @return mixed hook return code
|
|
*/
|
|
public function onStartGetProfileFromURI($uri, &$profile)
|
|
{
|
|
try {
|
|
$explorer = new Activitypub_explorer();
|
|
$profile = $explorer->lookup($uri)[0];
|
|
return false;
|
|
} catch (Exception $e) {
|
|
return true; // It's not an ActivityPub profile as far as we know, continue event handling
|
|
}
|
|
}
|
|
|
|
/********************************************************
|
|
* Delivery Events *
|
|
********************************************************/
|
|
|
|
/**
|
|
* Having established a remote subscription, send a notification to the
|
|
* remote ActivityPub profile's endpoint.
|
|
*
|
|
* @author Diogo Cordeiro <diogo@fc.up.pt>
|
|
* @param Profile $profile subscriber
|
|
* @param Profile $other subscribee
|
|
* @return hook return value
|
|
* @throws Exception
|
|
*/
|
|
public function onStartSubscribe(Profile $profile, Profile $other)
|
|
{
|
|
if (!$profile->isLocal() && $other->isLocal()) {
|
|
return true;
|
|
}
|
|
|
|
try {
|
|
$other = Activitypub_profile::from_profile($other);
|
|
} catch (Exception $e) {
|
|
return true;
|
|
}
|
|
|
|
$postman = new Activitypub_postman($profile, array($other));
|
|
|
|
$postman->follow();
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Notify remote server on unsubscribe.
|
|
*
|
|
* @author Diogo Cordeiro <diogo@fc.up.pt>
|
|
* @param Profile $profile
|
|
* @param Profile $other
|
|
* @return hook return value
|
|
*/
|
|
public function onStartUnsubscribe(Profile $profile, Profile $other)
|
|
{
|
|
if (!$profile->isLocal() && $other->isLocal()) {
|
|
return true;
|
|
}
|
|
|
|
try {
|
|
$other = Activitypub_profile::from_profile($other);
|
|
} catch (Exception $e) {
|
|
return true;
|
|
}
|
|
|
|
$postman = new Activitypub_postman($profile, array($other));
|
|
|
|
$postman->undo_follow();
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Notify remote users when their notices get favorited.
|
|
*
|
|
* @author Diogo Cordeiro <diogo@fc.up.pt>
|
|
* @param Profile $profile of local user doing the faving
|
|
* @param Notice $notice Notice being favored
|
|
* @return hook return value
|
|
*/
|
|
public function onEndFavorNotice(Profile $profile, Notice $notice)
|
|
{
|
|
// Only distribute local users' favor actions, remote users
|
|
// will have already distributed theirs.
|
|
if (!$profile->isLocal()) {
|
|
return true;
|
|
}
|
|
|
|
$other = array();
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($notice->getProfile());
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
foreach ($notice->getAttentionProfiles() as $to_profile) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($to_profile);
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
}
|
|
if ($notice->reply_to) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($notice->getParent()->getProfile());
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
try {
|
|
$mentions = $notice->getParent()->getAttentionProfiles();
|
|
foreach ($mentions as $to_profile) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($to_profile);
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
}
|
|
} catch (NoParentNoticeException $e) {
|
|
// This is not a reply to something (has no parent)
|
|
} catch (NoResultException $e) {
|
|
// Parent author's profile not found! Complain louder?
|
|
common_log(LOG_ERR, "Parent notice's author not found: ".$e->getMessage());
|
|
}
|
|
}
|
|
|
|
$postman = new Activitypub_postman($profile, $other);
|
|
|
|
$postman->like($notice);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Notify remote users when their notices get de-favorited.
|
|
*
|
|
* @author Diogo Cordeiro <diogo@fc.up.pt>
|
|
* @param Profile $profile of local user doing the de-faving
|
|
* @param Notice $notice Notice being favored
|
|
* @return hook return value
|
|
*/
|
|
public function onEndDisfavorNotice(Profile $profile, Notice $notice)
|
|
{
|
|
// Only distribute local users' favor actions, remote users
|
|
// will have already distributed theirs.
|
|
if (!$profile->isLocal()) {
|
|
return true;
|
|
}
|
|
|
|
$other = array();
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($notice->getProfile());
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
foreach ($notice->getAttentionProfiles() as $to_profile) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($to_profile);
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
}
|
|
if ($notice->reply_to) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($notice->getParent()->getProfile());
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
try {
|
|
$mentions = $notice->getParent()->getAttentionProfiles();
|
|
foreach ($mentions as $to_profile) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($to_profile);
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
}
|
|
} catch (NoParentNoticeException $e) {
|
|
// This is not a reply to something (has no parent)
|
|
} catch (NoResultException $e) {
|
|
// Parent author's profile not found! Complain louder?
|
|
common_log(LOG_ERR, "Parent notice's author not found: ".$e->getMessage());
|
|
}
|
|
}
|
|
|
|
$postman = new Activitypub_postman($profile, $other);
|
|
|
|
$postman->undo_like($notice);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Notify remote users when their notices get deleted
|
|
*
|
|
* @author Diogo Cordeiro <diogo@fc.up.pt>
|
|
* @return boolean hook flag
|
|
*/
|
|
public function onStartDeleteOwnNotice($user, $notice)
|
|
{
|
|
$profile = $user->getProfile();
|
|
|
|
// Only distribute local users' delete actions, remote users
|
|
// will have already distributed theirs.
|
|
if (!$profile->isLocal()) {
|
|
return true;
|
|
}
|
|
|
|
$other = array();
|
|
|
|
foreach ($notice->getAttentionProfiles() as $to_profile) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($to_profile);
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
}
|
|
if ($notice->reply_to) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($notice->getParent()->getProfile());
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
try {
|
|
$mentions = $notice->getParent()->getAttentionProfiles();
|
|
foreach ($mentions as $to_profile) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($to_profile);
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
}
|
|
} catch (NoParentNoticeException $e) {
|
|
// This is not a reply to something (has no parent)
|
|
} catch (NoResultException $e) {
|
|
// Parent author's profile not found! Complain louder?
|
|
common_log(LOG_ERR, "Parent notice's author not found: ".$e->getMessage());
|
|
}
|
|
}
|
|
|
|
$postman = new Activitypub_postman($profile, $other);
|
|
$postman->delete($notice);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Insert notifications for replies, mentions and repeats
|
|
*
|
|
* @author Diogo Cordeiro <diogo@fc.up.pt>
|
|
* @return boolean hook flag
|
|
*/
|
|
public function onStartNoticeDistribute($notice)
|
|
{
|
|
assert($notice->id > 0); // Ignore if not a valid notice
|
|
|
|
$profile = Profile::getKV($notice->profile_id);
|
|
|
|
if (!$profile->isLocal()) {
|
|
return true;
|
|
}
|
|
|
|
$other = array();
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($notice->getProfile());
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
foreach ($notice->getAttentionProfiles() as $to_profile) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($to_profile);
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
}
|
|
|
|
// Is Announce
|
|
if ($notice->isRepeat()) {
|
|
$repeated_notice = Notice::getKV('id', $notice->repeat_of);
|
|
if ($repeated_notice instanceof Notice) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($repeated_notice->getProfile());
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
|
|
$postman = new Activitypub_postman($profile, $other);
|
|
|
|
// That was it
|
|
$postman->announce($repeated_notice);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// Ignore for activity/non-post-verb notices
|
|
if (method_exists('ActivityUtils', 'compareVerbs')) {
|
|
$is_post_verb = ActivityUtils::compareVerbs(
|
|
$notice->verb,
|
|
[ActivityVerb::POST]
|
|
);
|
|
} else {
|
|
$is_post_verb = ($notice->verb == ActivityVerb::POST ? true : false);
|
|
}
|
|
if ($notice->source == 'activity' || !$is_post_verb) {
|
|
return true;
|
|
}
|
|
|
|
// Create
|
|
if ($notice->reply_to) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($notice->getParent()->getProfile());
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
try {
|
|
$mentions = $notice->getParent()->getAttentionProfiles();
|
|
foreach ($mentions as $to_profile) {
|
|
try {
|
|
$other[] = Activitypub_profile::from_profile($to_profile);
|
|
} catch (Exception $e) {
|
|
// Local user can be ignored
|
|
}
|
|
}
|
|
} catch (NoParentNoticeException $e) {
|
|
// This is not a reply to something (has no parent)
|
|
} catch (NoResultException $e) {
|
|
// Parent author's profile not found! Complain louder?
|
|
common_log(LOG_ERR, "Parent notice's author not found: ".$e->getMessage());
|
|
}
|
|
}
|
|
$postman = new Activitypub_postman($profile, $other);
|
|
|
|
// That was it
|
|
$postman->create_note($notice);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Override the "from ActivityPub" bit in notice lists to link to the
|
|
* original post and show the domain it came from.
|
|
*
|
|
* @author Diogo Cordeiro <diogo@fc.up.pt>
|
|
* @param Notice in $notice
|
|
* @param string out &$name
|
|
* @param string out &$url
|
|
* @param string out &$title
|
|
* @return mixed hook return code
|
|
*/
|
|
public function onStartNoticeSourceLink($notice, &$name, &$url, &$title)
|
|
{
|
|
// If we don't handle this, keep the event handler going
|
|
if (!in_array($notice->source, array('ActivityPub', 'share'))) {
|
|
return true;
|
|
}
|
|
|
|
try {
|
|
$url = $notice->getUrl();
|
|
// If getUrl() throws exception, $url is never set
|
|
|
|
$bits = parse_url($url);
|
|
$domain = $bits['host'];
|
|
if (substr($domain, 0, 4) == 'www.') {
|
|
$name = substr($domain, 4);
|
|
} else {
|
|
$name = $domain;
|
|
}
|
|
|
|
// TRANS: Title. %s is a domain name.
|
|
$title = sprintf(_m('Sent from %s via ActivityPub'), $domain);
|
|
|
|
// Abort event handler, we have a name and URL!
|
|
return false;
|
|
} catch (InvalidUrlException $e) {
|
|
// This just means we don't have the notice source data
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Plugin return handler
|
|
*/
|
|
class ActivityPubReturn
|
|
{
|
|
/**
|
|
* Return a valid answer
|
|
*
|
|
* @author Diogo Cordeiro <diogo@fc.up.pt>
|
|
* @param array $res
|
|
* @param int 32 $code Status Code
|
|
* @return void
|
|
*/
|
|
public static function answer($res = '', $code = 202)
|
|
{
|
|
http_response_code($code);
|
|
header('Content-Type: application/activity+json');
|
|
echo json_encode($res, JSON_UNESCAPED_SLASHES | (isset($_GET["pretty"]) ? JSON_PRETTY_PRINT : null));
|
|
exit;
|
|
}
|
|
|
|
/**
|
|
* Return an error
|
|
*
|
|
* @author Diogo Cordeiro <diogo@fc.up.pt>
|
|
* @param string $m
|
|
* @param int32 $code Status Code
|
|
* @return void
|
|
*/
|
|
public static function error($m, $code = 400)
|
|
{
|
|
http_response_code($code);
|
|
header('Content-Type: application/activity+json');
|
|
$res[] = Activitypub_error::error_message_to_array($m);
|
|
echo json_encode($res, JSON_UNESCAPED_SLASHES);
|
|
exit;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Overwrites variables in URL-mapping
|
|
*/
|
|
class ActivityPubURLMapperOverwrite extends URLMapper
|
|
{
|
|
/**
|
|
* Overwrites a route.
|
|
*
|
|
* @author Hannes Mannerheim <h@nnesmannerhe.im>
|
|
* @param URLMapper $m
|
|
* @param string $path
|
|
* @param string $paramPatterns
|
|
* @param string $newaction
|
|
* @return void
|
|
*/
|
|
public static function variable($m, $path, $paramPatterns, $newaction)
|
|
{
|
|
$m->connect($path, array('action' => $newaction), $paramPatterns);
|
|
$regex = self::makeRegex($path, $paramPatterns);
|
|
foreach ($m->variables as $n => $v) {
|
|
if ($v[1] == $regex) {
|
|
$m->variables[$n][0]['action'] = $newaction;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Determines whether the route should or not be overwrited.
|
|
* If ACCEPT header isn't set false will be returned.
|
|
*
|
|
* @author Diogo Cordeiro <diogo@fc.up.pt>
|
|
* @return boolean true if it should, false otherwise
|
|
*/
|
|
public static function should()
|
|
{
|
|
// Do not operate without Accept Header
|
|
if (!isset($_SERVER['HTTP_ACCEPT'])) {
|
|
return false;
|
|
}
|
|
|
|
$mimes = [
|
|
'application/ld+json; profile="https://www.w3.org/ns/activitystreams"' => 0,
|
|
'application/activity+json' => 1,
|
|
'application/json' => 2,
|
|
'application/ld+json' => 3
|
|
];
|
|
|
|
$acceptheader = new AcceptHeader($_SERVER['HTTP_ACCEPT']);
|
|
foreach ($acceptheader as $ah) {
|
|
if (isset($mimes[$ah['raw']])) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|