286 lines
12 KiB
PHP
286 lines
12 KiB
PHP
<?php
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declare(strict_types = 1);
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// {{{ License
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social 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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// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
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// }}}
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/**
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* ActivityPub implementation for GNU social
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*
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* @package GNUsocial
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* @category ActivityPub
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*
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* @author Diogo Peralta Cordeiro <@diogo.site>
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* @copyright 2021 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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namespace Plugin\ActivityPub\Util\Model;
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use ActivityPhp\Type\AbstractObject;
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use App\Core\ActorLocalRoles;
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use App\Core\DB\DB;
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use App\Core\Event;
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use App\Core\GSFile;
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use App\Core\HTTPClient;
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use App\Core\Log;
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use App\Core\Router\Router;
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use App\Entity\Actor as GSActor;
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use App\Util\Exception\ServerException;
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use App\Util\Formatting;
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use App\Util\TemporaryFile;
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use Component\Avatar\Avatar;
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use Component\Group\Entity\LocalGroup;
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use DateTime;
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use DateTimeInterface;
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use Exception;
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use InvalidArgumentException;
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use Plugin\ActivityPub\Entity\ActivitypubActor;
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use Plugin\ActivityPub\Entity\ActivitypubRsa;
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use Plugin\ActivityPub\Util\Model;
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/**
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* This class handles translation between JSON and GSActors
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*
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* @copyright 2021 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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class Actor extends Model
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{
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private static array $_gs_actor_type_to_as2_actor_type = [
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GSActor::PERSON => 'Person',
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GSActor::GROUP => 'Group',
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GSActor::BOT => 'Application',
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];
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private static array $_as2_actor_type_to_gs_actor_type = [
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'Person' => GSActor::PERSON,
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'Group' => GSActor::GROUP,
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'Organization' => GSActor::GROUP,
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'Application' => GSActor::BOT,
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'Service' => null,
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];
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/**
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* Create an Entity from an ActivityStreams 2.0 JSON string
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* This will persist a new GSActor, ActivityPubRSA, and ActivityPubActor
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*
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* @throws Exception
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*/
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public static function fromJson(string|AbstractObject $json, array $options = []): ActivitypubActor
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{
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$object = \is_string($json) ? self::jsonToType($json) : $json;
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switch ($object->get('type')) {
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case 'Application':
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case 'Person':
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// TODO: Operator may prefer users to start with Visitor and then have them being manually promoted
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$roles = ActorLocalRoles::PARTICIPANT | ActorLocalRoles::VISITOR; // Can view and participate
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break;
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case 'Group':
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case 'Organisation':
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$roles = ActorLocalRoles::VISITOR; // Can send direct messages to other actors
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if ($object->get('private')) {
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$roles |= ActorLocalRoles::PRIVATE_GROUP;
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}
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break;
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case 'Service':
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default:
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$roles = ActorLocalRoles::NONE;
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}
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// Actor
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$actor_map = [
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'nickname' => $object->get('preferredUsername'),
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'fullname' => !empty($object->get('name')) ? $object->get('name') : null,
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'created' => new DateTime($object->get('published') ?? 'now'),
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'bio' => $object->get('summary'),
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'is_local' => false, // duh!
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'type' => self::$_as2_actor_type_to_gs_actor_type[$object->get('type')],
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'roles' => $roles,
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'modified' => new DateTime(),
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];
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$actor = $options['objects']['Actor'] ?? new GSActor();
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foreach ($actor_map as $prop => $val) {
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$set = Formatting::snakeCaseToCamelCase("set_{$prop}");
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$actor->{$set}($val);
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}
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if (!isset($options['objects']['Actor'])) {
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DB::wrapInTransaction(fn () => DB::persist($actor));
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}
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// ActivityPub Actor
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$ap_actor = ActivitypubActor::create([
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'inbox_uri' => $object->get('inbox'),
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'inbox_shared_uri' => ($object->has('endpoints') && isset($object->get('endpoints')['sharedInbox'])) ? $object->get('endpoints')['sharedInbox'] : null,
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'uri' => $object->get('id'),
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'actor_id' => $actor->getId(),
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'url' => $object->get('url') ?? null,
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], $options['objects']['ActivitypubActor'] ?? null);
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if (!isset($options['objects']['ActivitypubActor'])) {
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DB::wrapInTransaction(fn () => DB::persist($ap_actor));
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}
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// Public Key
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$apRSA = ActivitypubRsa::create([
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'actor_id' => $actor->getID(),
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'public_key' => ($object->has('publicKey') && isset($object->get('publicKey')['publicKeyPem'])) ? $object->get('publicKey')['publicKeyPem'] : null,
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], $options['objects']['ActivitypubRsa'] ?? null);
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if (!isset($options['objects']['ActivitypubRsa'])) {
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DB::wrapInTransaction(fn () => DB::persist($apRSA));
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}
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// Avatar
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if ($object->has('icon') && !empty($object->get('icon'))) {
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try {
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// Retrieve media
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$get_response = HTTPClient::get($object->get('icon')->get('url'));
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$media = $get_response->getContent();
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$mimetype = $get_response->getHeaders()['content-type'][0] ?? null;
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unset($get_response);
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// Only handle if it is an image
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if (GSFile::mimetypeMajor($mimetype) === 'image') {
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// Ignore empty files
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if (!empty($media)) {
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// Create an attachment for this
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$temp_file = new TemporaryFile();
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$temp_file->write($media);
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$attachment = GSFile::storeFileAsAttachment($temp_file);
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// Delete current avatar if there's one
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if (!\is_null($avatar = DB::findOneBy(\Component\Avatar\Entity\Avatar::class, ['actor_id' => $actor->getId()], return_null: true))) {
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$avatar->delete();
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}
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DB::wrapInTransaction(function () use ($attachment, $actor, $object) {
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DB::persist($attachment);
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DB::persist(\Component\Avatar\Entity\Avatar::create([
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'actor_id' => $actor->getId(),
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'attachment_id' => $attachment->getId(),
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'title' => $object->get('icon')->get('name') ?? null,
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]));
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});
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Event::handle('AvatarUpdate', [$actor->getId()]);
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}
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}
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} catch (Exception $e) {
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// Let the exception go, it isn't a serious issue
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Log::warning('ActivityPub Explorer: An error occurred while grabbing remote avatar: ' . $e->getMessage());
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}
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} else {
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// Delete existing avatar if any
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try {
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$avatar = DB::findOneBy('avatar', ['actor_id' => $actor->getId()]);
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$avatar->delete();
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Event::handle('AvatarUpdate', [$actor->getId()]);
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} catch (Exception) {
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// No avatar set, so cannot delete
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}
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}
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return $ap_actor;
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}
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/**
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* Get a JSON
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*
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* @param null|int $options PHP JSON options
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*
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* @throws ServerException
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*/
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public static function toJson(mixed $object, ?int $options = null): string
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{
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if ($object::class !== GSActor::class) {
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throw new InvalidArgumentException('First argument type must be an Actor.');
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}
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$rsa = ActivitypubRsa::getByActor($object);
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$public_key = $rsa->getPublicKey();
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$uri = $object->getUri(Router::ABSOLUTE_URL);
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$attr = [
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'@context' => 'https://www.w3.org/ns/activitystreams',
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'type' => ($object->getType() === GSActor::GROUP) ? (LocalGroup::getByPK(['actor_id' => $object->getId()])->getType() === 'organisation' ? 'Organization' : 'Group'): self::$_gs_actor_type_to_as2_actor_type[$object->getType()],
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'id' => $uri,
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'inbox' => Router::url('activitypub_actor_inbox', ['gsactor_id' => $object->getId()], Router::ABSOLUTE_URL),
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'outbox' => Router::url('activitypub_actor_outbox', ['gsactor_id' => $object->getId()], Router::ABSOLUTE_URL),
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'following' => Router::url('actor_subscriptions_id', ['id' => $object->getId()], Router::ABSOLUTE_URL),
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'followers' => Router::url('actor_subscribers_id', ['id' => $object->getId()], Router::ABSOLUTE_URL),
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'liked' => Router::url('favourites_view_by_actor_id', ['id' => $object->getId()], Router::ABSOLUTE_URL),
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//'streams' =>
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'preferredUsername' => $object->getNickname(),
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'publicKey' => [
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'id' => $uri . '#public-key',
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'owner' => $uri,
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'publicKeyPem' => $public_key,
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],
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'name' => $object->getFullname(),
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'location' => $object->getLocation(),
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'published' => $object->getCreated()->format(DateTimeInterface::RFC3339),
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'summary' => $object->getBio(),
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//'tag' => $object->getSelfTags(),
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'updated' => $object->getModified()->format(DateTimeInterface::RFC3339),
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'url' => $object->getUrl(Router::ABSOLUTE_URL),
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'endpoints' => [
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'sharedInbox' => Router::url('activitypub_inbox', type: Router::ABSOLUTE_URL),
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],
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];
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// Avatar
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try {
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$avatar = Avatar::getAvatar($object->getId());
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$attr['icon'] = [
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'type' => 'Image',
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'summary' => 'Small Avatar',
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'name' => \is_null($avatar->getTitle()) ? null : 'small-' . $avatar->getTitle(),
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'mediaType' => $avatar->getAttachment()->getMimetype(),
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'url' => $avatar->getUrl(size: 'small', type: Router::ABSOLUTE_URL),
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];
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$attr['image'] = [
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[
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'type' => 'Image',
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'summary' => 'Medium Avatar',
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'name' => \is_null($avatar->getTitle()) ? null : 'medium-' . $avatar->getTitle(),
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'mediaType' => $avatar->getAttachment()->getMimetype(),
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'url' => $avatar->getUrl(size: 'medium', type: Router::ABSOLUTE_URL),
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],
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[
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'type' => 'Image',
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'summary' => 'Full Avatar',
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'name' => $avatar->getTitle(),
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'mediaType' => $avatar->getAttachment()->getMimetype(),
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'url' => $avatar->getUrl(size: 'full', type: Router::ABSOLUTE_URL),
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],
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];
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} catch (Exception) {
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// No icon for this actor
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}
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if ($object->isGroup()) {
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if ($object->getRoles() & ActorLocalRoles::PRIVATE_GROUP) {
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$attr['private'] = true;
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}
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}
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$type = self::jsonToType($attr);
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Event::handle('ActivityPubAddActivityStreamsTwoData', [$type->get('type'), &$type]);
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return $type->toJson($options);
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}
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}
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