gnu-social/plugins/ActivityPub/lib/activitypubfailedqueuehandler.php

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2020-08-30 00:09:10 +09:00
<?php
// 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/>.
/**
* ActivityPub queue handler for notice distribution
*
* @package GNUsocial
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
defined('GNUSOCIAL') || die();
/**
* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class ActivityPubFailedQueueHandler extends QueueHandler
{
/**
* Getter of the queue transport name.
*
* @return string transport name
*/
public function transport(): string
{
return 'activitypub_failed';
}
/**
* Notice distribution handler.
*
* @param array $to_failed [string to, Notice].
* @return bool true on success, false otherwise
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function handle($to_failed): bool
{
[$other, $notice] = $to_failed;
if (!($notice instanceof Notice)) {
common_log(LOG_ERR, 'Got a bogus notice, not distributing');
return true;
}
$profile = $notice->getProfile();
if (!$profile->isLocal()) {
return true;
}
if ($notice->source == 'activity') {
common_log(LOG_ERR, "Ignoring distribution of notice:{$notice->id}: activity source");
return true;
}
try {
// Handling a Create?
if (ActivityUtils::compareVerbs($notice->verb, [ActivityVerb::POST, ActivityVerb::SHARE])) {
return $this->handle_create($profile, $notice, $other);
}
// Handling a Like?
if (ActivityUtils::compareVerbs($notice->verb, [ActivityVerb::FAVORITE])) {
return $this->onEndFavorNotice($profile, $notice, $other);
}
// Handling a Delete Note?
if (ActivityUtils::compareVerbs($notice->verb, [ActivityVerb::DELETE])) {
return $this->onStartDeleteOwnNotice($profile, $notice, $other);
}
} catch (Exception $e) {
// Postman already re-enqueues for us
common_debug('ActivityPub Failed Queue Handler:'.$e->getMessage());
}
return true;
}
private function handle_create($profile, $notice, $other)
{
// Handling an Announce?
if ($notice->isRepeat()) {
$repeated_notice = Notice::getKV('id', $notice->repeat_of);
if ($repeated_notice instanceof Notice) {
// That was it
$postman = new Activitypub_postman($profile, $other);
$postman->announce($notice, $repeated_notice);
}
// either made the announce or found nothing to repeat
return true;
}
// That was it
$postman = new Activitypub_postman($profile, $other);
$postman->create_note($notice);
return true;
}
/**
* Notify remote users when their notices get favourited.
*
* @param Profile $profile of local user doing the faving
* @param Notice $notice_liked Notice being favored
* @return bool return value
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function onEndFavorNotice(Profile $profile, Notice $notice, $other)
{
$postman = new Activitypub_postman($profile, $other);
$postman->like($notice);
return true;
}
/**
* Notify remote users when their notices get deleted
*
* @param $user
* @param $notice
* @return bool hook flag
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function onStartDeleteOwnNotice($profile, $notice, $other)
{
// Handle delete locally either because:
// 1. There's no undo-share logic yet
// 2. The deleting user has privileges to do so (locally)
if ($notice->isRepeat() || ($notice->getProfile()->getID() != $profile->getID())) {
return true;
}
$postman = new Activitypub_postman($profile, $other);
$postman->delete_note($notice);
return true;
}
}