mirror of https://github.com/friendica/friendica
463 lines
14 KiB
PHP
463 lines
14 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2023, the Friendica project
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*
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* @license GNU AGPL version 3 or any later version
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*
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* 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
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* published by the Free Software Foundation, either version 3 of the
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* License, or (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 <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Protocol\ActivityPub;
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use Friendica\Content\Text\Markdown;
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use Friendica\Core\Logger;
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use Friendica\Core\Protocol;
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use Friendica\Database\DBA;
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use Friendica\DI;
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use Friendica\Model\APContact;
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use Friendica\Model\Contact;
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use Friendica\Model\Circle;
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use Friendica\Model\Item;
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use Friendica\Model\Post;
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use Friendica\Model\User;
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use Friendica\Protocol\Activity;
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use Friendica\Protocol\ActivityPub;
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use Friendica\Util\JsonLD;
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/**
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* ActivityPub Client To Server class
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*/
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class ClientToServer
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{
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/**
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* Process client to server activities
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*
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* @param array $activity
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* @param integer $uid
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* @param array $application
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* @return array
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*/
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public static function processActivity(array $activity, int $uid, array $application): array
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{
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$ldactivity = JsonLD::compact($activity);
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if (empty($ldactivity)) {
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Logger::notice('Invalid activity', ['activity' => $activity, 'uid' => $uid]);
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return [];
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}
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$type = JsonLD::fetchElement($ldactivity, '@type');
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if (!$type) {
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Logger::notice('Empty type', ['activity' => $ldactivity, 'uid' => $uid]);
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return [];
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}
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$object_id = JsonLD::fetchElement($ldactivity, 'as:object', '@id') ?? '';
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$object_type = Receiver::fetchObjectType($ldactivity, $object_id, $uid);
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if (!$object_type && !$object_id) {
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Logger::notice('Empty object type or id', ['activity' => $ldactivity, 'uid' => $uid]);
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return [];
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}
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Logger::debug('Processing activity', ['type' => $type, 'object_type' => $object_type, 'object_id' => $object_id, 'activity' => $ldactivity]);
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return self::routeActivities($type, $object_type, $object_id, $uid, $application, $ldactivity);
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}
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/**
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* Route client to server activities
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*
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* @param string $type
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* @param string $object_type
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* @param string $object_id
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* @param integer $uid
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* @param array $application
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* @param array $ldactivity
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* @return array
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*/
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private static function routeActivities(string $type, string $object_type, string $object_id, int $uid, array $application, array $ldactivity): array
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{
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switch ($type) {
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case 'as:Create':
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if (in_array($object_type, Receiver::CONTENT_TYPES)) {
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return self::createContent($uid, $application, $ldactivity);
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}
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break;
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case 'as:Update':
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if (in_array($object_type, Receiver::CONTENT_TYPES) && !empty($object_id)) {
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return self::updateContent($uid, $object_id, $application, $ldactivity);
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}
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break;
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case 'as:Follow':
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if (in_array($object_type, Receiver::ACCOUNT_TYPES) && !empty($object_id)) {
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return self::followAccount($uid, $object_id, $ldactivity);
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}
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break;
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}
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return [];
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}
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/**
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* Create a new post or comment
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*
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* @param integer $uid
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* @param array $application
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* @param array $ldactivity
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* @return array
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*/
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private static function createContent(int $uid, array $application, array $ldactivity): array
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{
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$object_data = self::processObject($ldactivity['as:object']);
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$item = ClientToServer::processContent($object_data, $application, $uid);
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Logger::debug('Got data', ['item' => $item, 'object' => $object_data]);
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$id = Item::insert($item, true);
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if (!empty($id)) {
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$item = Post::selectFirst(['uri-id'], ['id' => $id]);
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if (!empty($item['uri-id'])) {
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return Transmitter::createActivityFromItem($id);
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}
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}
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return [];
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}
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/**
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* Update an existing post or comment
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*
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* @param integer $uid
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* @param string $object_id
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* @param array $application
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* @param array $ldactivity
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* @return array
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*/
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private static function updateContent(int $uid, string $object_id, array $application, array $ldactivity): array
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{
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$id = Item::fetchByLink($object_id, $uid);
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$original_post = Post::selectFirst(['uri-id'], ['uid' => $uid, 'origin' => true, 'id' => $id]);
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if (empty($original_post)) {
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Logger::debug('Item not found or does not belong to the user', ['id' => $id, 'uid' => $uid, 'object_id' => $object_id, 'activity' => $ldactivity]);
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return [];
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}
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$object_data = self::processObject($ldactivity['as:object']);
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$item = ClientToServer::processContent($object_data, $application, $uid);
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if (empty($item['title']) && empty($item['body'])) {
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Logger::debug('Empty body and title', ['id' => $id, 'uid' => $uid, 'object_id' => $object_id, 'activity' => $ldactivity]);
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return [];
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}
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$post = ['title' => $item['title'], 'body' => $item['body']];
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Logger::debug('Got data', ['id' => $id, 'uid' => $uid, 'item' => $post]);
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Item::update($post, ['id' => $id]);
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Item::updateDisplayCache($original_post['uri-id']);
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return Transmitter::createActivityFromItem($id);
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}
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/**
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* Follow a given account
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* @todo Check the expected return value
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*
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* @param integer $uid
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* @param string $object_id
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* @param array $ldactivity
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* @return array
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*/
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private static function followAccount(int $uid, string $object_id, array $ldactivity): array
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{
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return [];
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}
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/**
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* Fetches data from the object part of an client to server activity
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*
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* @param array $object
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*
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* @return array Object data
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*/
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private static function processObject(array $object): array
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{
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$object_data = Receiver::getObjectDataFromActivity($object);
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$object_data['target'] = self::getTargets($object, $object_data['actor'] ?? '');
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$object_data['receiver'] = [];
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return $object_data;
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}
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/**
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* Accumulate the targets and visibility of this post
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*
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* @param array $object
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* @param string $actor
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* @return array
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*/
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private static function getTargets(array $object, string $actor): array
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{
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$profile = APContact::getByURL($actor);
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$followers = $profile['followers'];
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$targets = [];
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foreach (['as:to', 'as:cc', 'as:bto', 'as:bcc', 'as:audience'] as $element) {
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switch ($element) {
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case 'as:to':
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$type = Receiver::TARGET_TO;
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break;
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case 'as:cc':
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$type = Receiver::TARGET_CC;
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break;
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case 'as:bto':
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$type = Receiver::TARGET_BTO;
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break;
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case 'as:bcc':
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$type = Receiver::TARGET_BCC;
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break;
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case 'as:audience':
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$type = Receiver::TARGET_AUDIENCE;
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break;
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}
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$receiver_list = JsonLD::fetchElementArray($object, $element, '@id');
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if (empty($receiver_list)) {
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continue;
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}
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foreach ($receiver_list as $receiver) {
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if ($receiver == Receiver::PUBLIC_COLLECTION) {
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$targets[Receiver::TARGET_GLOBAL] = ($element == 'as:to');
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continue;
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}
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if ($receiver == $followers) {
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$targets[Receiver::TARGET_FOLLOWER] = true;
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continue;
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}
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$targets[$type][] = Contact::getIdForURL($receiver);
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}
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}
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return $targets;
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}
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/**
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* Create an item array from client to server object data
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*
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* @param array $object_data
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* @param array $application
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* @param integer $uid
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* @return array
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*/
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private static function processContent(array $object_data, array $application, int $uid): array
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{
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$owner = User::getOwnerDataById($uid);
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$item = [];
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$item['network'] = Protocol::DFRN;
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$item['uid'] = $uid;
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$item['verb'] = Activity::POST;
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$item['contact-id'] = $owner['id'];
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$item['author-id'] = $item['owner-id'] = Contact::getPublicIdByUserId($uid);
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$item['title'] = $object_data['name'];
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$item['body'] = Markdown::toBBCode($object_data['content'] ?? '');
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$item['app'] = $application['name'] ?? 'API';
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if (!empty($object_data['target'][Receiver::TARGET_GLOBAL])) {
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$item['allow_cid'] = '';
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$item['allow_gid'] = '';
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$item['deny_cid'] = '';
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$item['deny_gid'] = '';
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$item['private'] = Item::PUBLIC;
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} elseif (isset($object_data['target'][Receiver::TARGET_GLOBAL])) {
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$item['allow_cid'] = '';
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$item['allow_gid'] = '';
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$item['deny_cid'] = '';
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$item['deny_gid'] = '';
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$item['private'] = Item::UNLISTED;
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} elseif (!empty($object_data['target'][Receiver::TARGET_FOLLOWER])) {
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$item['allow_cid'] = '';
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$item['allow_gid'] = '<' . Circle::FOLLOWERS . '>';
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$item['deny_cid'] = '';
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$item['deny_gid'] = '';
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$item['private'] = Item::PRIVATE;
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} else {
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// @todo Set permissions via the $object_data['target'] array
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$item['allow_cid'] = '<' . $owner['id'] . '>';
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$item['allow_gid'] = '';
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$item['deny_cid'] = '';
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$item['deny_gid'] = '';
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$item['private'] = Item::PRIVATE;
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}
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if (!empty($object_data['summary'])) {
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$item['body'] = '[abstract=' . Protocol::ACTIVITYPUB . ']' . $object_data['summary'] . "[/abstract]\n" . $item['body'];
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}
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if ($object_data['reply-to-id']) {
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$item['thr-parent'] = $object_data['reply-to-id'];
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$item['gravity'] = Item::GRAVITY_COMMENT;
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} else {
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$item['gravity'] = Item::GRAVITY_PARENT;
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}
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$item = DI::contentItem()->expandTags($item);
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return $item;
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}
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/**
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* Public posts for the given owner
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*
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* @param array $owner Owner array
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* @param integer $uid User id
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* @param integer $page Page number
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* @param integer $max_id Maximum ID
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* @param string $requester URL of requesting account
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* @param boolean $nocache Wether to bypass caching
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* @return array of posts
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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* @throws \ImagickException
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*/
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public static function getOutbox(array $owner, int $uid, int $page = null, int $max_id = null, string $requester = ''): array
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{
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$condition = [
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'gravity' => [Item::GRAVITY_PARENT, Item::GRAVITY_COMMENT],
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'private' => [Item::PUBLIC, Item::UNLISTED]
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];
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if (!empty($requester)) {
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$requester_id = Contact::getIdForURL($requester, $owner['uid']);
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if (!empty($requester_id)) {
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$permissionSets = DI::permissionSet()->selectByContactId($requester_id, $owner['uid']);
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if (!empty($permissionSets)) {
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$condition = ['psid' => array_merge($permissionSets->column('id'),
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[DI::permissionSet()->selectPublicForUser($owner['uid'])])];
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}
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}
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}
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$condition = array_merge($condition, [
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'uid' => $owner['uid'],
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'author-id' => Contact::getIdForURL($owner['url'], 0, false),
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'gravity' => [Item::GRAVITY_PARENT, Item::GRAVITY_COMMENT],
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'network' => Protocol::FEDERATED,
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'parent-network' => Protocol::FEDERATED,
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'origin' => true,
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'deleted' => false,
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'visible' => true
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]);
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$apcontact = APContact::getByURL($owner['url']);
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if (empty($apcontact)) {
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throw new \Friendica\Network\HTTPException\NotFoundException();
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}
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return self::getCollection($condition, DI::baseUrl() . '/outbox/' . $owner['nickname'], $page, $max_id, $uid, $apcontact['statuses_count']);
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}
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public static function getInbox(int $uid, int $page = null, int $max_id = null)
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{
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$owner = User::getOwnerDataById($uid);
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$condition = [
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'gravity' => [Item::GRAVITY_PARENT, Item::GRAVITY_COMMENT],
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'network' => [Protocol::ACTIVITYPUB, Protocol::DFRN],
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'uid' => $uid
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];
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return self::getCollection($condition, DI::baseUrl() . '/inbox/' . $owner['nickname'], $page, $max_id, $uid, null);
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}
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public static function getPublicInbox(int $uid, int $page = null, int $max_id = null)
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{
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$condition = [
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'gravity' => [Item::GRAVITY_PARENT, Item::GRAVITY_COMMENT],
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'private' => Item::PUBLIC,
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'network' => [Protocol::ACTIVITYPUB, Protocol::DFRN],
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'author-blocked' => false,
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'author-hidden' => false
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];
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return self::getCollection($condition, DI::baseUrl() . '/inbox', $page, $max_id, $uid, null);
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}
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private static function getCollection(array $condition, string $path, int $page = null, int $max_id = null, int $uid = null, int $total_items = null)
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{
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$data = ['@context' => ActivityPub::CONTEXT];
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$data['id'] = $path;
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$data['type'] = 'OrderedCollection';
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if (!is_null($total_items)) {
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$data['totalItems'] = $total_items;
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}
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if (!empty($page)) {
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$data['id'] .= '?' . http_build_query(['page' => $page]);
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}
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if (empty($page) && empty($max_id)) {
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$data['first'] = $path . '?page=1';
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} else {
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$data['type'] = 'OrderedCollectionPage';
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$list = [];
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if (!empty($max_id)) {
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$condition = DBA::mergeConditions($condition, ["`uri-id` < ?", $max_id]);
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}
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if (!empty($page)) {
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$params = ['limit' => [($page - 1) * 20, 20], 'order' => ['uri-id' => true]];
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} else {
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$params = ['limit' => 20, 'order' => ['uri-id' => true]];
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}
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if (!is_null($uid)) {
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$items = Post::selectForUser($uid, ['id', 'uri-id'], $condition, $params);
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} else {
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$items = Post::select(['id', 'uri-id'], $condition, $params);
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}
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$last_id = 0;
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while ($item = Post::fetch($items)) {
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$activity = Transmitter::createActivityFromItem($item['id'], false, !is_null($uid));
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if (!empty($activity)) {
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$list[] = $activity;
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$last_id = $item['uri-id'];
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continue;
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}
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}
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DBA::close($items);
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if (count($list) == 20) {
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$data['next'] = $path . '?max_id=' . $last_id;
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}
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// Fix the cached total item count when it is lower than the real count
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if (!is_null($total_items)) {
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$total = (($page - 1) * 20) + $data['totalItems'];
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if ($total > $data['totalItems']) {
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$data['totalItems'] = $total;
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}
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}
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$data['partOf'] = $path;
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$data['orderedItems'] = $list;
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}
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return $data;
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}
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}
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