<?php
declare(strict_types = 1);
// {{{ License
// 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 implementation for GNU social
*
* @package GNUsocial
* @category ActivityPub
*
* @author Diogo Peralta Cordeiro <@diogo.site>
* @copyright 2021 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
namespace Plugin\ActivityPub\Util\Model;
use ActivityPhp\Type\AbstractObject;
use App\Core\DB\DB;
use App\Core\Event;
use App\Core\GSFile;
use App\Core\HTTPClient;
use App\Core\Log;
use App\Core\Router\Router;
use App\Core\UserRoles;
use App\Entity\Actor as GSActor;
use App\Util\Exception\ServerException;
use App\Util\Formatting;
use App\Util\TemporaryFile;
use Component\Avatar\Avatar;
use DateTime;
use DateTimeInterface;
use Exception;
use InvalidArgumentException;
use Plugin\ActivityPub\Entity\ActivitypubActor;
use Plugin\ActivityPub\Entity\ActivitypubRsa;
use Plugin\ActivityPub\Util\Model;
/**
* This class handles translation between JSON and GSActors
*
* @copyright 2021 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Actor extends Model
{
/**
* Create an Entity from an ActivityStreams 2.0 JSON string
* This will persist a new GSActor, ActivityPubRSA, and ActivityPubActor
*
* @throws Exception
*/
public static function fromJson(string|AbstractObject $json, array $options = []): ActivitypubActor
{
$person = \is_string($json) ? self::jsonToType($json) : $json;
// Actor
$actor_map = [
'nickname' => $person->get('preferredUsername'),
'fullname' => !empty($person->get('name')) ? $person->get('name') : null,
'created' => new DateTime($person->get('published') ?? 'now'),
'bio' => $person->get('summary'),
'is_local' => false,
'type' => GSActor::PERSON,
'roles' => UserRoles::USER,
'modified' => new DateTime(),
];
$actor = $options['objects']['Actor'] ?? new GSActor();
foreach ($actor_map as $prop => $val) {
$set = Formatting::snakeCaseToCamelCase("set_{$prop}");
$actor->{$set}($val);
}
if (!isset($options['objects']['Actor'])) {
DB::persist($actor);
}
// ActivityPub Actor
$ap_actor = ActivitypubActor::create([
'inbox_uri' => $person->get('inbox'),
'inbox_shared_uri' => ($person->has('endpoints') && isset($person->get('endpoints')['sharedInbox'])) ? $person->get('endpoints')['sharedInbox'] : null,
'uri' => $person->get('id'),
'actor_id' => $actor->getId(),
'url' => $person->get('url') ?? null,
], $options['objects']['ActivitypubActor'] ?? null);
if (!isset($options['objects']['ActivitypubActor'])) {
DB::persist($ap_actor);
}
// Public Key
$apRSA = ActivitypubRsa::create([
'actor_id' => $actor->getID(),
'public_key' => ($person->has('publicKey') && isset($person->get('publicKey')['publicKeyPem'])) ? $person->get('publicKey')['publicKeyPem'] : null,
], $options['objects']['ActivitypubRsa'] ?? null);
if (!isset($options['objects']['ActivitypubRsa'])) {
DB::persist($apRSA);
}
// Avatar
if ($person->has('icon') && !empty($person->get('icon'))) {
try {
// Retrieve media
$get_response = HTTPClient::get($person->get('icon')->get('url'));
$media = $get_response->getContent();
$mimetype = $get_response->getHeaders()['content-type'][0] ?? null;
unset($get_response);
// Only handle if it is an image
if (GSFile::mimetypeMajor($mimetype) === 'image') {
// Ignore empty files
if (!empty($media)) {
// Create an attachment for this
$temp_file = new TemporaryFile();
$temp_file->write($media);
$attachment = GSFile::storeFileAsAttachment($temp_file);
// Delete current avatar if there's one
$avatar = DB::find('avatar', ['actor_id' => $actor->getId()]);
$avatar?->delete();
DB::wrapInTransaction(function () use ($attachment, $actor) {
DB::persist($attachment);
DB::persist(\Component\Avatar\Entity\Avatar::create(['actor_id' => $actor->getId(), 'attachment_id' => $attachment->getId()]));
});
Event::handle('AvatarUpdate', [$actor->getId()]);
}
}
} catch (Exception $e) {
// Let the exception go, it isn't a serious issue
Log::warning('ActivityPub Explorer: An error occurred while grabbing remote avatar: ' . $e->getMessage());
}
} else {
// Delete existing avatar if any
try {
$avatar = DB::findOneBy('avatar', ['actor_id' => $actor->getId()]);
$avatar->delete();
Event::handle('AvatarUpdate', [$actor->getId()]);
} catch (Exception) {
// No avatar set, so cannot delete
}
}
return $ap_actor;
}
/**
* Get a JSON
*
* @param null|int $options PHP JSON options
*
* @throws ServerException
*/
public static function toJson(mixed $object, ?int $options = null): string
{
if ($object::class !== 'App\Entity\Actor') {
throw new InvalidArgumentException('First argument type is Actor');
}
$rsa = ActivitypubRsa::getByActor($object);
$public_key = $rsa->getPublicKey();
$uri = null;
$attr = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'type' => 'Person',
'id' => $object->getUri(Router::ABSOLUTE_URL),
'inbox' => Router::url('activitypub_actor_inbox', ['gsactor_id' => $object->getId()], Router::ABSOLUTE_URL),
'outbox' => Router::url('activitypub_actor_outbox', ['gsactor_id' => $object->getId()], Router::ABSOLUTE_URL),
'following' => Router::url('actor_subscriptions_id', ['id' => $object->getId()], Router::ABSOLUTE_URL),
'followers' => Router::url('actor_subscribers_id', ['id' => $object->getId()], Router::ABSOLUTE_URL),
'liked' => Router::url('favourites_view_by_actor_id', ['id' => $object->getId()], Router::ABSOLUTE_URL),
//'streams' =>
'preferredUsername' => $object->getNickname(),
'publicKey' => [
'id' => $uri . '#public-key',
'owner' => $uri,
'publicKeyPem' => $public_key,
],
'name' => $object->getFullname(),
'location' => $object->getLocation(),
'published' => $object->getCreated()->format(DateTimeInterface::RFC3339),
'summary' => $object->getBio(),
//'tag' => $object->getSelfTags(),
'updated' => $object->getModified()->format(DateTimeInterface::RFC3339),
'url' => $object->getUrl(Router::ABSOLUTE_URL),
];
// Avatar
try {
$avatar = Avatar::getAvatar($object->getId());
$attr['icon'] = $attr['image'] = [
'type' => 'Image',
'mediaType' => $avatar->getAttachment()->getMimetype(),
'url' => $avatar->getUrl(type: Router::ABSOLUTE_URL),
];
} catch (Exception) {
// No icon for this actor
}
$type = self::jsonToType($attr);
Event::handle('ActivityPubAddActivityStreamsTwoData', [$type->get('type'), &$type]);
return $type->toJson($options);
}
}