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- <?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;
- use ActivityPhp\Type;
- use ActivityPhp\Type\TypeConfiguration;
- use ActivityPhp\Type\TypeResolver;
- use App\Core\Entity;
- use App\Core\Event;
- use App\Util\Exception\ClientException;
- use Exception;
- use InvalidArgumentException;
- use Plugin\ActivityPub\Util\Model\Activity;
- use Plugin\ActivityPub\Util\Model\Note;
- /**
- * This class handles translation between JSON and GS Entities
- *
- * @copyright 2021 Free Software Foundation, Inc http://www.fsf.org
- * @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
- */
- abstract class Model
- {
- /**
- * Create a Type from an ActivityStreams 2.0 JSON string
- *
- * @throws Exception
- */
- public static function jsonToType(string|array $data): Type\AbstractObject
- {
- if (\is_string($data)) {
- $attributes = json_decode($data, true);
- if (json_last_error() !== \JSON_ERROR_NONE
- || !\is_array($attributes)
- ) {
- throw new Exception(
- sprintf(
- "An error occurred during the JSON decoding.\n '%s'",
- $data,
- ),
- );
- }
- } else {
- $attributes = $data;
- }
- if (!\array_key_exists('type', $attributes)) {
- throw new InvalidArgumentException('Missing "type" attribute in $data: ' . var_export($data, true));
- }
- unset($data);
- try {
- $type = TypeResolver::getClass($attributes['type']);
- } catch (Exception $e) {
- $message = json_encode($attributes, \JSON_PRETTY_PRINT);
- throw new Exception(
- $e->getMessage() . "\n{$message}",
- );
- }
- if (\is_string($type)) {
- $type = new $type();
- }
- // Add our own extensions
- $validators = [];
- if (Event::handle('ActivityPubValidateActivityStreamsTwoData', [$attributes['type'], &$validators]) === Event::next) {
- foreach ($validators as $name => $class) {
- Type::addValidator($name, $class);
- $type->extend($name);
- }
- }
- TypeConfiguration::set('undefined_properties', 'include');
- foreach ($attributes as $name => $value) {
- $type->set($name, $value);
- }
- return $type;
- }
- /**
- * Create an Entity from an ActivityStreams 2.0 JSON string
- */
- abstract public static function fromJson(string|Type\AbstractObject $json, array $options = []): Entity;
- /**
- * Get a JSON
- *
- * @param ?int $options PHP JSON options
- *
- * @throws ClientException
- */
- public static function toJson(mixed $object, ?int $options = null): string
- {
- switch ($object::class) {
- case \App\Entity\Activity::class:
- return Activity::toJson($object, $options);
- case \App\Entity\Note::class:
- return Note::toJson($object, $options);
- default:
- $type = self::jsonToType($object);
- Event::handle('ActivityPubAddActivityStreamsTwoData', [$type->get('type'), &$type]);
- return $type->toJson($options);
- }
- }
- }
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