From 4d2e5c2bbee82abd80c566051024aa33440ab805 Mon Sep 17 00:00:00 2001 From: Michael Date: Wed, 3 Oct 2018 06:15:07 +0000 Subject: [PATCH] AP class will be split in processor, receiver and transmitter --- src/Module/Followers.php | 2 +- src/Module/Following.php | 2 +- src/Module/Outbox.php | 2 +- src/Protocol/ActivityPub.php | 142 ---- src/Protocol/ActivityPub/Processor.php | 476 +++++++++++++ src/Protocol/ActivityPub/Receiver.php | 596 ++++++++++++++++ src/Protocol/ActivityPub/Transmitter.php | 831 +++++++++++++++++++++++ 7 files changed, 1906 insertions(+), 145 deletions(-) create mode 100644 src/Protocol/ActivityPub/Processor.php create mode 100644 src/Protocol/ActivityPub/Receiver.php create mode 100644 src/Protocol/ActivityPub/Transmitter.php diff --git a/src/Module/Followers.php b/src/Module/Followers.php index 98e9f1e0e..56160aecf 100644 --- a/src/Module/Followers.php +++ b/src/Module/Followers.php @@ -29,7 +29,7 @@ class Followers extends BaseModule $page = defaults($_REQUEST, 'page', null); - $followers = ActivityPub::getFollowers($owner, $page); + $followers = ActivityPub\Transmitter::getFollowers($owner, $page); header('Content-Type: application/activity+json'); echo json_encode($followers); diff --git a/src/Module/Following.php b/src/Module/Following.php index 6023db4cb..71e6613f0 100644 --- a/src/Module/Following.php +++ b/src/Module/Following.php @@ -29,7 +29,7 @@ class Following extends BaseModule $page = defaults($_REQUEST, 'page', null); - $Following = ActivityPub::getFollowing($owner, $page); + $Following = ActivityPub\Transmitter::getFollowing($owner, $page); header('Content-Type: application/activity+json'); echo json_encode($Following); diff --git a/src/Module/Outbox.php b/src/Module/Outbox.php index f6bad56dd..681d1cccb 100644 --- a/src/Module/Outbox.php +++ b/src/Module/Outbox.php @@ -29,7 +29,7 @@ class Outbox extends BaseModule $page = defaults($_REQUEST, 'page', null); - $outbox = ActivityPub::getOutbox($owner, $page); + $outbox = ActivityPub\Transmitter::getOutbox($owner, $page); header('Content-Type: application/activity+json'); echo json_encode($outbox); diff --git a/src/Protocol/ActivityPub.php b/src/Protocol/ActivityPub.php index ef4a48479..a9f3217f9 100644 --- a/src/Protocol/ActivityPub.php +++ b/src/Protocol/ActivityPub.php @@ -92,148 +92,6 @@ class ActivityPub stristr(defaults($_SERVER, 'HTTP_ACCEPT', ''), 'application/ld+json'); } - /** - * @brief collects the lost of followers of the given owner - * - * @param array $owner Owner array - * @param integer $page Page number - * - * @return array of owners - */ - public static function getFollowers($owner, $page = null) - { - $condition = ['rel' => [Contact::FOLLOWER, Contact::FRIEND], 'network' => Protocol::NATIVE_SUPPORT, 'uid' => $owner['uid'], - 'self' => false, 'hidden' => false, 'archive' => false, 'pending' => false]; - $count = DBA::count('contact', $condition); - - $data = ['@context' => self::CONTEXT]; - $data['id'] = System::baseUrl() . '/followers/' . $owner['nickname']; - $data['type'] = 'OrderedCollection'; - $data['totalItems'] = $count; - - // When we hide our friends we will only show the pure number but don't allow more. - $profile = Profile::getByUID($owner['uid']); - if (!empty($profile['hide-friends'])) { - return $data; - } - - if (empty($page)) { - $data['first'] = System::baseUrl() . '/followers/' . $owner['nickname'] . '?page=1'; - } else { - $list = []; - - $contacts = DBA::select('contact', ['url'], $condition, ['limit' => [($page - 1) * 100, 100]]); - while ($contact = DBA::fetch($contacts)) { - $list[] = $contact['url']; - } - - if (!empty($list)) { - $data['next'] = System::baseUrl() . '/followers/' . $owner['nickname'] . '?page=' . ($page + 1); - } - - $data['partOf'] = System::baseUrl() . '/followers/' . $owner['nickname']; - - $data['orderedItems'] = $list; - } - - return $data; - } - - /** - * @brief Create list of following contacts - * - * @param array $owner Owner array - * @param integer $page Page numbe - * - * @return array of following contacts - */ - public static function getFollowing($owner, $page = null) - { - $condition = ['rel' => [Contact::SHARING, Contact::FRIEND], 'network' => Protocol::NATIVE_SUPPORT, 'uid' => $owner['uid'], - 'self' => false, 'hidden' => false, 'archive' => false, 'pending' => false]; - $count = DBA::count('contact', $condition); - - $data = ['@context' => self::CONTEXT]; - $data['id'] = System::baseUrl() . '/following/' . $owner['nickname']; - $data['type'] = 'OrderedCollection'; - $data['totalItems'] = $count; - - // When we hide our friends we will only show the pure number but don't allow more. - $profile = Profile::getByUID($owner['uid']); - if (!empty($profile['hide-friends'])) { - return $data; - } - - if (empty($page)) { - $data['first'] = System::baseUrl() . '/following/' . $owner['nickname'] . '?page=1'; - } else { - $list = []; - - $contacts = DBA::select('contact', ['url'], $condition, ['limit' => [($page - 1) * 100, 100]]); - while ($contact = DBA::fetch($contacts)) { - $list[] = $contact['url']; - } - - if (!empty($list)) { - $data['next'] = System::baseUrl() . '/following/' . $owner['nickname'] . '?page=' . ($page + 1); - } - - $data['partOf'] = System::baseUrl() . '/following/' . $owner['nickname']; - - $data['orderedItems'] = $list; - } - - return $data; - } - - /** - * @brief Public posts for the given owner - * - * @param array $owner Owner array - * @param integer $page Page numbe - * - * @return array of posts - */ - public static function getOutbox($owner, $page = null) - { - $public_contact = Contact::getIdForURL($owner['url'], 0, true); - - $condition = ['uid' => $owner['uid'], 'contact-id' => $owner['id'], 'author-id' => $public_contact, - 'wall' => true, 'private' => false, 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT], - 'deleted' => false, 'visible' => true]; - $count = DBA::count('item', $condition); - - $data = ['@context' => self::CONTEXT]; - $data['id'] = System::baseUrl() . '/outbox/' . $owner['nickname']; - $data['type'] = 'OrderedCollection'; - $data['totalItems'] = $count; - - if (empty($page)) { - $data['first'] = System::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=1'; - } else { - $list = []; - - $condition['parent-network'] = Protocol::NATIVE_SUPPORT; - - $items = Item::select(['id'], $condition, ['limit' => [($page - 1) * 20, 20], 'order' => ['created' => true]]); - while ($item = Item::fetch($items)) { - $object = self::createObjectFromItemID($item['id']); - unset($object['@context']); - $list[] = $object; - } - - if (!empty($list)) { - $data['next'] = System::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=' . ($page + 1); - } - - $data['partOf'] = System::baseUrl() . '/outbox/' . $owner['nickname']; - - $data['orderedItems'] = $list; - } - - return $data; - } - /** * Return the ActivityPub profile of the given user * diff --git a/src/Protocol/ActivityPub/Processor.php b/src/Protocol/ActivityPub/Processor.php new file mode 100644 index 000000000..bbf4d7b80 --- /dev/null +++ b/src/Protocol/ActivityPub/Processor.php @@ -0,0 +1,476 @@ + $activity['reply-to-id']])) { + logger('Parent ' . $activity['reply-to-id'] . ' not found. Try to refetch it.'); + self::fetchMissingActivity($activity['reply-to-id'], $activity); + } + + self::postItem($activity, $item, $body); + } + + /** + * @brief + * + * @param array $activity + * @param $body + */ + private static function likeItem($activity, $body) + { + $item = []; + $item['verb'] = ACTIVITY_LIKE; + $item['parent-uri'] = $activity['object']; + $item['gravity'] = GRAVITY_ACTIVITY; + $item['object-type'] = ACTIVITY_OBJ_NOTE; + + self::postItem($activity, $item, $body); + } + + /** + * @brief Delete items + * + * @param array $activity + * @param $body + */ + private static function deleteItem($activity) + { + $owner = Contact::getIdForURL($activity['owner']); + $object = JsonLD::fetchElement($activity, 'object', 'id'); + logger('Deleting item ' . $object . ' from ' . $owner, LOGGER_DEBUG); + Item::delete(['uri' => $object, 'owner-id' => $owner]); + } + + /** + * @brief + * + * @param array $activity + * @param $body + */ + private static function dislikeItem($activity, $body) + { + $item = []; + $item['verb'] = ACTIVITY_DISLIKE; + $item['parent-uri'] = $activity['object']; + $item['gravity'] = GRAVITY_ACTIVITY; + $item['object-type'] = ACTIVITY_OBJ_NOTE; + + self::postItem($activity, $item, $body); + } + + /** + * @brief + * + * @param array $activity + * @param array $item + * @param $body + */ + private static function postItem($activity, $item, $body) + { + /// @todo What to do with $activity['context']? + + if (($item['gravity'] != GRAVITY_PARENT) && !Item::exists(['uri' => $item['parent-uri']])) { + logger('Parent ' . $item['parent-uri'] . ' not found, message will be discarded.', LOGGER_DEBUG); + return; + } + + $item['network'] = Protocol::ACTIVITYPUB; + $item['private'] = !in_array(0, $activity['receiver']); + $item['author-id'] = Contact::getIdForURL($activity['author'], 0, true); + $item['owner-id'] = Contact::getIdForURL($activity['owner'], 0, true); + $item['uri'] = $activity['id']; + $item['created'] = $activity['published']; + $item['edited'] = $activity['updated']; + $item['guid'] = $activity['diaspora:guid']; + $item['title'] = HTML::toBBCode($activity['name']); + $item['content-warning'] = HTML::toBBCode($activity['summary']); + $item['body'] = self::convertMentions(HTML::toBBCode($activity['content'])); + $item['location'] = $activity['location']; + $item['tag'] = self::constructTagList($activity['tags'], $activity['sensitive']); + $item['app'] = $activity['service']; + $item['plink'] = defaults($activity, 'alternate-url', $item['uri']); + + $item = self::constructAttachList($activity['attachments'], $item); + + $source = JsonLD::fetchElement($activity, 'source', 'content', 'mediaType', 'text/bbcode'); + if (!empty($source)) { + $item['body'] = $source; + } + + $item['protocol'] = Conversation::PARCEL_ACTIVITYPUB; + $item['source'] = $body; + $item['conversation-href'] = $activity['context']; + $item['conversation-uri'] = $activity['conversation']; + + foreach ($activity['receiver'] as $receiver) { + $item['uid'] = $receiver; + $item['contact-id'] = Contact::getIdForURL($activity['author'], $receiver, true); + + if (($receiver != 0) && empty($item['contact-id'])) { + $item['contact-id'] = Contact::getIdForURL($activity['author'], 0, true); + } + + $item_id = Item::insert($item); + logger('Storing for user ' . $item['uid'] . ': ' . $item_id); + } + } + + /** + * @brief + * + * @param $url + * @param $child + */ + private static function fetchMissingActivity($url, $child) + { + if (Config::get('system', 'ostatus_full_threads')) { + return; + } + + $object = ActivityPub::fetchContent($url); + if (empty($object)) { + logger('Activity ' . $url . ' was not fetchable, aborting.'); + return; + } + + $activity = []; + $activity['@context'] = $object['@context']; + unset($object['@context']); + $activity['id'] = $object['id']; + $activity['to'] = defaults($object, 'to', []); + $activity['cc'] = defaults($object, 'cc', []); + $activity['actor'] = $child['author']; + $activity['object'] = $object; + $activity['published'] = $object['published']; + $activity['type'] = 'Create'; + + ActivityPub::processActivity($activity); + logger('Activity ' . $url . ' had been fetched and processed.'); + } + + /** + * @brief perform a "follow" request + * + * @param array $activity + */ + private static function followUser($activity) + { + $actor = JsonLD::fetchElement($activity, 'object', 'id'); + $uid = User::getIdForURL($actor); + if (empty($uid)) { + return; + } + + $owner = User::getOwnerDataById($uid); + + $cid = Contact::getIdForURL($activity['owner'], $uid); + if (!empty($cid)) { + $contact = DBA::selectFirst('contact', [], ['id' => $cid]); + } else { + $contact = false; + } + + $item = ['author-id' => Contact::getIdForURL($activity['owner']), + 'author-link' => $activity['owner']]; + + Contact::addRelationship($owner, $contact, $item); + $cid = Contact::getIdForURL($activity['owner'], $uid); + if (empty($cid)) { + return; + } + + $contact = DBA::selectFirst('contact', ['network'], ['id' => $cid]); + if ($contact['network'] != Protocol::ACTIVITYPUB) { + Contact::updateFromProbe($cid, Protocol::ACTIVITYPUB); + } + + DBA::update('contact', ['hub-verify' => $activity['id']], ['id' => $cid]); + logger('Follow user ' . $uid . ' from contact ' . $cid . ' with id ' . $activity['id']); + } + + /** + * @brief Update the given profile + * + * @param array $activity + */ + private static function updatePerson($activity) + { + if (empty($activity['object']['id'])) { + return; + } + + logger('Updating profile for ' . $activity['object']['id'], LOGGER_DEBUG); + APContact::getByURL($activity['object']['id'], true); + } + + /** + * @brief Delete the given profile + * + * @param array $activity + */ + private static function deletePerson($activity) + { + if (empty($activity['object']['id']) || empty($activity['object']['actor'])) { + logger('Empty object id or actor.', LOGGER_DEBUG); + return; + } + + if ($activity['object']['id'] != $activity['object']['actor']) { + logger('Object id does not match actor.', LOGGER_DEBUG); + return; + } + + $contacts = DBA::select('contact', ['id'], ['nurl' => normalise_link($activity['object']['id'])]); + while ($contact = DBA::fetch($contacts)) { + Contact::remove($contact["id"]); + } + DBA::close($contacts); + + logger('Deleted contact ' . $activity['object']['id'], LOGGER_DEBUG); + } + + /** + * @brief Accept a follow request + * + * @param array $activity + */ + private static function acceptFollowUser($activity) + { + $actor = JsonLD::fetchElement($activity, 'object', 'actor'); + $uid = User::getIdForURL($actor); + if (empty($uid)) { + return; + } + + $owner = User::getOwnerDataById($uid); + + $cid = Contact::getIdForURL($activity['owner'], $uid); + if (empty($cid)) { + logger('No contact found for ' . $activity['owner'], LOGGER_DEBUG); + return; + } + + $fields = ['pending' => false]; + + $contact = DBA::selectFirst('contact', ['rel'], ['id' => $cid]); + if ($contact['rel'] == Contact::FOLLOWER) { + $fields['rel'] = Contact::FRIEND; + } + + $condition = ['id' => $cid]; + DBA::update('contact', $fields, $condition); + logger('Accept contact request from contact ' . $cid . ' for user ' . $uid, LOGGER_DEBUG); + } + + /** + * @brief Reject a follow request + * + * @param array $activity + */ + private static function rejectFollowUser($activity) + { + $actor = JsonLD::fetchElement($activity, 'object', 'actor'); + $uid = User::getIdForURL($actor); + if (empty($uid)) { + return; + } + + $owner = User::getOwnerDataById($uid); + + $cid = Contact::getIdForURL($activity['owner'], $uid); + if (empty($cid)) { + logger('No contact found for ' . $activity['owner'], LOGGER_DEBUG); + return; + } + + if (DBA::exists('contact', ['id' => $cid, 'rel' => Contact::SHARING, 'pending' => true])) { + Contact::remove($cid); + logger('Rejected contact request from contact ' . $cid . ' for user ' . $uid . ' - contact had been removed.', LOGGER_DEBUG); + } else { + logger('Rejected contact request from contact ' . $cid . ' for user ' . $uid . '.', LOGGER_DEBUG); + } + } + + /** + * @brief Undo activity like "like" or "dislike" + * + * @param array $activity + */ + private static function undoActivity($activity) + { + $activity_url = JsonLD::fetchElement($activity, 'object', 'id'); + if (empty($activity_url)) { + return; + } + + $actor = JsonLD::fetchElement($activity, 'object', 'actor'); + if (empty($actor)) { + return; + } + + $author_id = Contact::getIdForURL($actor); + if (empty($author_id)) { + return; + } + + Item::delete(['uri' => $activity_url, 'author-id' => $author_id, 'gravity' => GRAVITY_ACTIVITY]); + } + + /** + * @brief Activity to remove a follower + * + * @param array $activity + */ + private static function undoFollowUser($activity) + { + $object = JsonLD::fetchElement($activity, 'object', 'object'); + $uid = User::getIdForURL($object); + if (empty($uid)) { + return; + } + + $owner = User::getOwnerDataById($uid); + + $cid = Contact::getIdForURL($activity['owner'], $uid); + if (empty($cid)) { + logger('No contact found for ' . $activity['owner'], LOGGER_DEBUG); + return; + } + + $contact = DBA::selectFirst('contact', [], ['id' => $cid]); + if (!DBA::isResult($contact)) { + return; + } + + Contact::removeFollower($owner, $contact); + logger('Undo following request from contact ' . $cid . ' for user ' . $uid, LOGGER_DEBUG); + } +} diff --git a/src/Protocol/ActivityPub/Receiver.php b/src/Protocol/ActivityPub/Receiver.php new file mode 100644 index 000000000..171771748 --- /dev/null +++ b/src/Protocol/ActivityPub/Receiver.php @@ -0,0 +1,596 @@ + $uid]; + $receivers = array_merge($receivers, $additional); + } + + logger('Receivers: ' . json_encode($receivers), LOGGER_DEBUG); + + $object_id = JsonLD::fetchElement($activity, 'object', 'id'); + if (empty($object_id)) { + logger('No object found', LOGGER_DEBUG); + return []; + } + + // Fetch the content only on activities where this matters + if (in_array($activity['type'], ['Create', 'Announce'])) { + $object_data = ActivityPub::fetchObject($object_id, $activity['object'], $trust_source); + if (empty($object_data)) { + logger("Object data couldn't be processed", LOGGER_DEBUG); + return []; + } + // We had been able to retrieve the object data - so we can trust the source + $trust_source = true; + } elseif (in_array($activity['type'], ['Like', 'Dislike'])) { + // Create a mostly empty array out of the activity data (instead of the object). + // This way we later don't have to check for the existence of ech individual array element. + $object_data = ActivityPub::processObject($activity); + $object_data['name'] = $activity['type']; + $object_data['author'] = $activity['actor']; + $object_data['object'] = $object_id; + $object_data['object_type'] = ''; // Since we don't fetch the object, we don't know the type + } else { + $object_data = []; + $object_data['id'] = $activity['id']; + $object_data['object'] = $activity['object']; + $object_data['object_type'] = JsonLD::fetchElement($activity, 'object', 'type'); + } + + $object_data = ActivityPub::addActivityFields($object_data, $activity); + + $object_data['type'] = $activity['type']; + $object_data['owner'] = $actor; + $object_data['receiver'] = array_merge(defaults($object_data, 'receiver', []), $receivers); + + logger('Processing ' . $object_data['type'] . ' ' . $object_data['object_type'] . ' ' . $object_data['id'], LOGGER_DEBUG); + + return $object_data; + } + + /** + * @brief + * + * @param array $activity + * @param $body + * @param integer $uid User ID + * @param $trust_source + */ + private static function processActivity($activity, $body = '', $uid = null, $trust_source = false) + { + if (empty($activity['type'])) { + logger('Empty type', LOGGER_DEBUG); + return; + } + + if (empty($activity['object'])) { + logger('Empty object', LOGGER_DEBUG); + return; + } + + if (empty($activity['actor'])) { + logger('Empty actor', LOGGER_DEBUG); + return; + + } + + // $trust_source is called by reference and is set to true if the content was retrieved successfully + $object_data = ActivityPub::prepareObjectData($activity, $uid, $trust_source); + if (empty($object_data)) { + logger('No object data found', LOGGER_DEBUG); + return; + } + + if (!$trust_source) { + logger('No trust for activity type "' . $activity['type'] . '", so we quit now.', LOGGER_DEBUG); + } + + switch ($activity['type']) { + case 'Create': + case 'Announce': + ActivityPub::createItem($object_data, $body); + break; + + case 'Like': + ActivityPub::likeItem($object_data, $body); + break; + + case 'Dislike': + ActivityPub::dislikeItem($object_data, $body); + break; + + case 'Update': + if (in_array($object_data['object_type'], ActivityPub::CONTENT_TYPES)) { + /// @todo + } elseif (in_array($object_data['object_type'], ActivityPub::ACCOUNT_TYPES)) { + ActivityPub::updatePerson($object_data, $body); + } + break; + + case 'Delete': + if ($object_data['object_type'] == 'Tombstone') { + ActivityPub::deleteItem($object_data, $body); + } elseif (in_array($object_data['object_type'], ActivityPub::ACCOUNT_TYPES)) { + ActivityPub::deletePerson($object_data, $body); + } + break; + + case 'Follow': + ActivityPub::followUser($object_data); + break; + + case 'Accept': + if ($object_data['object_type'] == 'Follow') { + ActivityPub::acceptFollowUser($object_data); + } + break; + + case 'Reject': + if ($object_data['object_type'] == 'Follow') { + ActivityPub::rejectFollowUser($object_data); + } + break; + + case 'Undo': + if ($object_data['object_type'] == 'Follow') { + ActivityPub::undoFollowUser($object_data); + } elseif (in_array($object_data['object_type'], ActivityPub::ACTIVITY_TYPES)) { + ActivityPub::undoActivity($object_data); + } + break; + + default: + logger('Unknown activity: ' . $activity['type'], LOGGER_DEBUG); + break; + } + } + + /** + * @brief + * + * @param array $activity + * @param $actor + * + * @return + */ + private static function getReceivers($activity, $actor) + { + $receivers = []; + + // When it is an answer, we inherite the receivers from the parent + $replyto = JsonLD::fetchElement($activity, 'inReplyTo', 'id'); + if (!empty($replyto)) { + $parents = Item::select(['uid'], ['uri' => $replyto]); + while ($parent = Item::fetch($parents)) { + $receivers['uid:' . $parent['uid']] = $parent['uid']; + } + } + + if (!empty($actor)) { + $profile = APContact::getByURL($actor); + $followers = defaults($profile, 'followers', ''); + + logger('Actor: ' . $actor . ' - Followers: ' . $followers, LOGGER_DEBUG); + } else { + logger('Empty actor', LOGGER_DEBUG); + $followers = ''; + } + + foreach (['to', 'cc', 'bto', 'bcc'] as $element) { + if (empty($activity[$element])) { + continue; + } + + // The receiver can be an array or a string + if (is_string($activity[$element])) { + $activity[$element] = [$activity[$element]]; + } + + foreach ($activity[$element] as $receiver) { + if ($receiver == ActivityPub::PUBLIC_COLLECTION) { + $receivers['uid:0'] = 0; + } + + if (($receiver == ActivityPub::PUBLIC_COLLECTION) && !empty($actor)) { + // This will most likely catch all OStatus connections to Mastodon + $condition = ['alias' => [$actor, normalise_link($actor)], 'rel' => [Contact::SHARING, Contact::FRIEND] + , 'archive' => false, 'pending' => false]; + $contacts = DBA::select('contact', ['uid'], $condition); + while ($contact = DBA::fetch($contacts)) { + if ($contact['uid'] != 0) { + $receivers['uid:' . $contact['uid']] = $contact['uid']; + } + } + DBA::close($contacts); + } + + if (in_array($receiver, [$followers, ActivityPub::PUBLIC_COLLECTION]) && !empty($actor)) { + $condition = ['nurl' => normalise_link($actor), 'rel' => [Contact::SHARING, Contact::FRIEND], + 'network' => Protocol::ACTIVITYPUB, 'archive' => false, 'pending' => false]; + $contacts = DBA::select('contact', ['uid'], $condition); + while ($contact = DBA::fetch($contacts)) { + if ($contact['uid'] != 0) { + $receivers['uid:' . $contact['uid']] = $contact['uid']; + } + } + DBA::close($contacts); + continue; + } + + $condition = ['self' => true, 'nurl' => normalise_link($receiver)]; + $contact = DBA::selectFirst('contact', ['uid'], $condition); + if (!DBA::isResult($contact)) { + continue; + } + $receivers['uid:' . $contact['uid']] = $contact['uid']; + } + } + + ActivityPub::switchContacts($receivers, $actor); + + return $receivers; + } + + /** + * @brief + * + * @param $cid + * @param integer $uid User ID + * @param $url + */ + private static function switchContact($cid, $uid, $url) + { + $profile = ActivityPub::probeProfile($url); + if (empty($profile)) { + return; + } + + logger('Switch contact ' . $cid . ' (' . $profile['url'] . ') for user ' . $uid . ' from OStatus to ActivityPub'); + + $photo = $profile['photo']; + unset($profile['photo']); + unset($profile['baseurl']); + + $profile['nurl'] = normalise_link($profile['url']); + DBA::update('contact', $profile, ['id' => $cid]); + + Contact::updateAvatar($photo, $uid, $cid); + } + + /** + * @brief + * + * @param $receivers + * @param $actor + */ + private static function switchContacts($receivers, $actor) + { + if (empty($actor)) { + return; + } + + foreach ($receivers as $receiver) { + $contact = DBA::selectFirst('contact', ['id'], ['uid' => $receiver, 'network' => Protocol::OSTATUS, 'nurl' => normalise_link($actor)]); + if (DBA::isResult($contact)) { + ActivityPub::switchContact($contact['id'], $receiver, $actor); + } + + $contact = DBA::selectFirst('contact', ['id'], ['uid' => $receiver, 'network' => Protocol::OSTATUS, 'alias' => [normalise_link($actor), $actor]]); + if (DBA::isResult($contact)) { + ActivityPub::switchContact($contact['id'], $receiver, $actor); + } + } + } + + /** + * @brief + * + * @param $object_data + * @param array $activity + * + * @return + */ + private static function addActivityFields($object_data, $activity) + { + if (!empty($activity['published']) && empty($object_data['published'])) { + $object_data['published'] = $activity['published']; + } + + if (!empty($activity['updated']) && empty($object_data['updated'])) { + $object_data['updated'] = $activity['updated']; + } + + if (!empty($activity['inReplyTo']) && empty($object_data['parent-uri'])) { + $object_data['parent-uri'] = JsonLD::fetchElement($activity, 'inReplyTo', 'id'); + } + + if (!empty($activity['instrument'])) { + $object_data['service'] = JsonLD::fetchElement($activity, 'instrument', 'name', 'type', 'Service'); + } + return $object_data; + } + + /** + * @brief + * + * @param $object_id + * @param $object + * @param $trust_source + * + * @return + */ + private static function fetchObject($object_id, $object = [], $trust_source = false) + { + if (!$trust_source || is_string($object)) { + $data = ActivityPub::fetchContent($object_id); + if (empty($data)) { + logger('Empty content for ' . $object_id . ', check if content is available locally.', LOGGER_DEBUG); + $data = $object_id; + } else { + logger('Fetched content for ' . $object_id, LOGGER_DEBUG); + } + } else { + logger('Using original object for url ' . $object_id, LOGGER_DEBUG); + $data = $object; + } + + if (is_string($data)) { + $item = Item::selectFirst([], ['uri' => $data]); + if (!DBA::isResult($item)) { + logger('Object with url ' . $data . ' was not found locally.', LOGGER_DEBUG); + return false; + } + logger('Using already stored item for url ' . $object_id, LOGGER_DEBUG); + $data = ActivityPub::createNote($item); + } + + if (empty($data['type'])) { + logger('Empty type', LOGGER_DEBUG); + return false; + } + + if (in_array($data['type'], ActivityPub::CONTENT_TYPES)) { + return ActivityPub::processObject($data); + } + + if ($data['type'] == 'Announce') { + if (empty($data['object'])) { + return false; + } + return ActivityPub::fetchObject($data['object']); + } + + logger('Unhandled object type: ' . $data['type'], LOGGER_DEBUG); + } + + /** + * @brief + * + * @param $object + * + * @return + */ + private static function processObject($object) + { + if (empty($object['id'])) { + return false; + } + + $object_data = []; + $object_data['object_type'] = $object['type']; + $object_data['id'] = $object['id']; + + if (!empty($object['inReplyTo'])) { + $object_data['reply-to-id'] = JsonLD::fetchElement($object, 'inReplyTo', 'id'); + } else { + $object_data['reply-to-id'] = $object_data['id']; + } + + $object_data['published'] = defaults($object, 'published', null); + $object_data['updated'] = defaults($object, 'updated', $object_data['published']); + + if (empty($object_data['published']) && !empty($object_data['updated'])) { + $object_data['published'] = $object_data['updated']; + } + + $actor = JsonLD::fetchElement($object, 'attributedTo', 'id'); + if (empty($actor)) { + $actor = defaults($object, 'actor', null); + } + + $object_data['diaspora:guid'] = defaults($object, 'diaspora:guid', null); + $object_data['owner'] = $object_data['author'] = $actor; + $object_data['context'] = defaults($object, 'context', null); + $object_data['conversation'] = defaults($object, 'conversation', null); + $object_data['sensitive'] = defaults($object, 'sensitive', null); + $object_data['name'] = defaults($object, 'title', null); + $object_data['name'] = defaults($object, 'name', $object_data['name']); + $object_data['summary'] = defaults($object, 'summary', null); + $object_data['content'] = defaults($object, 'content', null); + $object_data['source'] = defaults($object, 'source', null); + $object_data['location'] = JsonLD::fetchElement($object, 'location', 'name', 'type', 'Place'); + $object_data['attachments'] = defaults($object, 'attachment', null); + $object_data['tags'] = defaults($object, 'tag', null); + $object_data['service'] = JsonLD::fetchElement($object, 'instrument', 'name', 'type', 'Service'); + $object_data['alternate-url'] = JsonLD::fetchElement($object, 'url', 'href'); + $object_data['receiver'] = ActivityPub::getReceivers($object, $object_data['owner']); + + // Common object data: + + // Unhandled + // @context, type, actor, signature, mediaType, duration, replies, icon + + // Also missing: (Defined in the standard, but currently unused) + // audience, preview, endTime, startTime, generator, image + + // Data in Notes: + + // Unhandled + // contentMap, announcement_count, announcements, context_id, likes, like_count + // inReplyToStatusId, shares, quoteUrl, statusnetConversationId + + // Data in video: + + // To-Do? + // category, licence, language, commentsEnabled + + // Unhandled + // views, waitTranscoding, state, support, subtitleLanguage + // likes, dislikes, shares, comments + + return $object_data; + } + + /** + * @brief + * + * @param $url + * @param $child + */ + private static function fetchMissingActivity($url, $child) + { + if (Config::get('system', 'ostatus_full_threads')) { + return; + } + + $object = ActivityPub::fetchContent($url); + if (empty($object)) { + logger('Activity ' . $url . ' was not fetchable, aborting.'); + return; + } + + $activity = []; + $activity['@context'] = $object['@context']; + unset($object['@context']); + $activity['id'] = $object['id']; + $activity['to'] = defaults($object, 'to', []); + $activity['cc'] = defaults($object, 'cc', []); + $activity['actor'] = $child['author']; + $activity['object'] = $object; + $activity['published'] = $object['published']; + $activity['type'] = 'Create'; + + ActivityPub::processActivity($activity); + logger('Activity ' . $url . ' had been fetched and processed.'); + } +} diff --git a/src/Protocol/ActivityPub/Transmitter.php b/src/Protocol/ActivityPub/Transmitter.php new file mode 100644 index 000000000..7155d8309 --- /dev/null +++ b/src/Protocol/ActivityPub/Transmitter.php @@ -0,0 +1,831 @@ + [Contact::FOLLOWER, Contact::FRIEND], 'network' => Protocol::NATIVE_SUPPORT, 'uid' => $owner['uid'], + 'self' => false, 'hidden' => false, 'archive' => false, 'pending' => false]; + $count = DBA::count('contact', $condition); + + $data = ['@context' => ActivityPub::CONTEXT]; + $data['id'] = System::baseUrl() . '/followers/' . $owner['nickname']; + $data['type'] = 'OrderedCollection'; + $data['totalItems'] = $count; + + // When we hide our friends we will only show the pure number but don't allow more. + $profile = Profile::getByUID($owner['uid']); + if (!empty($profile['hide-friends'])) { + return $data; + } + + if (empty($page)) { + $data['first'] = System::baseUrl() . '/followers/' . $owner['nickname'] . '?page=1'; + } else { + $list = []; + + $contacts = DBA::select('contact', ['url'], $condition, ['limit' => [($page - 1) * 100, 100]]); + while ($contact = DBA::fetch($contacts)) { + $list[] = $contact['url']; + } + + if (!empty($list)) { + $data['next'] = System::baseUrl() . '/followers/' . $owner['nickname'] . '?page=' . ($page + 1); + } + + $data['partOf'] = System::baseUrl() . '/followers/' . $owner['nickname']; + + $data['orderedItems'] = $list; + } + + return $data; + } + + /** + * @brief Create list of following contacts + * + * @param array $owner Owner array + * @param integer $page Page numbe + * + * @return array of following contacts + */ + public static function getFollowing($owner, $page = null) + { + $condition = ['rel' => [Contact::SHARING, Contact::FRIEND], 'network' => Protocol::NATIVE_SUPPORT, 'uid' => $owner['uid'], + 'self' => false, 'hidden' => false, 'archive' => false, 'pending' => false]; + $count = DBA::count('contact', $condition); + + $data = ['@context' => ActivityPub::CONTEXT]; + $data['id'] = System::baseUrl() . '/following/' . $owner['nickname']; + $data['type'] = 'OrderedCollection'; + $data['totalItems'] = $count; + + // When we hide our friends we will only show the pure number but don't allow more. + $profile = Profile::getByUID($owner['uid']); + if (!empty($profile['hide-friends'])) { + return $data; + } + + if (empty($page)) { + $data['first'] = System::baseUrl() . '/following/' . $owner['nickname'] . '?page=1'; + } else { + $list = []; + + $contacts = DBA::select('contact', ['url'], $condition, ['limit' => [($page - 1) * 100, 100]]); + while ($contact = DBA::fetch($contacts)) { + $list[] = $contact['url']; + } + + if (!empty($list)) { + $data['next'] = System::baseUrl() . '/following/' . $owner['nickname'] . '?page=' . ($page + 1); + } + + $data['partOf'] = System::baseUrl() . '/following/' . $owner['nickname']; + + $data['orderedItems'] = $list; + } + + return $data; + } + + /** + * @brief Public posts for the given owner + * + * @param array $owner Owner array + * @param integer $page Page numbe + * + * @return array of posts + */ + public static function getOutbox($owner, $page = null) + { + $public_contact = Contact::getIdForURL($owner['url'], 0, true); + + $condition = ['uid' => $owner['uid'], 'contact-id' => $owner['id'], 'author-id' => $public_contact, + 'wall' => true, 'private' => false, 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT], + 'deleted' => false, 'visible' => true]; + $count = DBA::count('item', $condition); + + $data = ['@context' => ActivityPub::CONTEXT]; + $data['id'] = System::baseUrl() . '/outbox/' . $owner['nickname']; + $data['type'] = 'OrderedCollection'; + $data['totalItems'] = $count; + + if (empty($page)) { + $data['first'] = System::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=1'; + } else { + $list = []; + + $condition['parent-network'] = Protocol::NATIVE_SUPPORT; + + $items = Item::select(['id'], $condition, ['limit' => [($page - 1) * 20, 20], 'order' => ['created' => true]]); + while ($item = Item::fetch($items)) { + $object = self::createObjectFromItemID($item['id']); + unset($object['@context']); + $list[] = $object; + } + + if (!empty($list)) { + $data['next'] = System::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=' . ($page + 1); + } + + $data['partOf'] = System::baseUrl() . '/outbox/' . $owner['nickname']; + + $data['orderedItems'] = $list; + } + + return $data; + } + + /** + * Return the ActivityPub profile of the given user + * + * @param integer $uid User ID + * @return profile array + */ + public static function profile($uid) + { + $condition = ['uid' => $uid, 'blocked' => false, 'account_expired' => false, + 'account_removed' => false, 'verified' => true]; + $fields = ['guid', 'nickname', 'pubkey', 'account-type', 'page-flags']; + $user = DBA::selectFirst('user', $fields, $condition); + if (!DBA::isResult($user)) { + return []; + } + + $fields = ['locality', 'region', 'country-name']; + $profile = DBA::selectFirst('profile', $fields, ['uid' => $uid, 'is-default' => true]); + if (!DBA::isResult($profile)) { + return []; + } + + $fields = ['name', 'url', 'location', 'about', 'avatar']; + $contact = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]); + if (!DBA::isResult($contact)) { + return []; + } + + $data = ['@context' => ActivityPub::CONTEXT]; + $data['id'] = $contact['url']; + $data['diaspora:guid'] = $user['guid']; + $data['type'] = ActivityPub::ACCOUNT_TYPES[$user['account-type']]; + $data['following'] = System::baseUrl() . '/following/' . $user['nickname']; + $data['followers'] = System::baseUrl() . '/followers/' . $user['nickname']; + $data['inbox'] = System::baseUrl() . '/inbox/' . $user['nickname']; + $data['outbox'] = System::baseUrl() . '/outbox/' . $user['nickname']; + $data['preferredUsername'] = $user['nickname']; + $data['name'] = $contact['name']; + $data['vcard:hasAddress'] = ['@type' => 'vcard:Home', 'vcard:country-name' => $profile['country-name'], + 'vcard:region' => $profile['region'], 'vcard:locality' => $profile['locality']]; + $data['summary'] = $contact['about']; + $data['url'] = $contact['url']; + $data['manuallyApprovesFollowers'] = in_array($user['page-flags'], [Contact::PAGE_NORMAL, Contact::PAGE_PRVGROUP]); + $data['publicKey'] = ['id' => $contact['url'] . '#main-key', + 'owner' => $contact['url'], + 'publicKeyPem' => $user['pubkey']]; + $data['endpoints'] = ['sharedInbox' => System::baseUrl() . '/inbox']; + $data['icon'] = ['type' => 'Image', + 'url' => $contact['avatar']]; + + // tags: https://kitty.town/@inmysocks/100656097926961126.json + return $data; + } + + /** + * @brief Returns an array with permissions of a given item array + * + * @param array $item + * + * @return array with permissions + */ + private static function fetchPermissionBlockFromConversation($item) + { + if (empty($item['thr-parent'])) { + return []; + } + + $condition = ['item-uri' => $item['thr-parent'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB]; + $conversation = DBA::selectFirst('conversation', ['source'], $condition); + if (!DBA::isResult($conversation)) { + return []; + } + + $activity = json_decode($conversation['source'], true); + + $actor = JsonLD::fetchElement($activity, 'actor', 'id'); + $profile = APContact::getByURL($actor); + + $item_profile = APContact::getByURL($item['author-link']); + $exclude[] = $item['author-link']; + + if ($item['gravity'] == GRAVITY_PARENT) { + $exclude[] = $item['owner-link']; + } + + $permissions['to'][] = $actor; + + foreach (['to', 'cc', 'bto', 'bcc'] as $element) { + if (empty($activity[$element])) { + continue; + } + if (is_string($activity[$element])) { + $activity[$element] = [$activity[$element]]; + } + + foreach ($activity[$element] as $receiver) { + if ($receiver == $profile['followers'] && !empty($item_profile['followers'])) { + $receiver = $item_profile['followers']; + } + if (!in_array($receiver, $exclude)) { + $permissions[$element][] = $receiver; + } + } + } + return $permissions; + } + + /** + * @brief Creates an array of permissions from an item thread + * + * @param array $item + * + * @return permission array + */ + public static function createPermissionBlockForItem($item) + { + $data = ['to' => [], 'cc' => []]; + + $data = array_merge($data, self::fetchPermissionBlockFromConversation($item)); + + $actor_profile = APContact::getByURL($item['author-link']); + + $terms = Term::tagArrayFromItemId($item['id'], TERM_MENTION); + + $contacts[$item['author-link']] = $item['author-link']; + + if (!$item['private']) { + $data['to'][] = ActivityPub::PUBLIC_COLLECTION; + if (!empty($actor_profile['followers'])) { + $data['cc'][] = $actor_profile['followers']; + } + + foreach ($terms as $term) { + $profile = APContact::getByURL($term['url'], false); + if (!empty($profile) && empty($contacts[$profile['url']])) { + $data['cc'][] = $profile['url']; + $contacts[$profile['url']] = $profile['url']; + } + } + } else { + $receiver_list = Item::enumeratePermissions($item); + + $mentioned = []; + + foreach ($terms as $term) { + $cid = Contact::getIdForURL($term['url'], $item['uid']); + if (!empty($cid) && in_array($cid, $receiver_list)) { + $contact = DBA::selectFirst('contact', ['url'], ['id' => $cid, 'network' => Protocol::ACTIVITYPUB]); + $data['to'][] = $contact['url']; + $contacts[$contact['url']] = $contact['url']; + } + } + + foreach ($receiver_list as $receiver) { + $contact = DBA::selectFirst('contact', ['url'], ['id' => $receiver, 'network' => Protocol::ACTIVITYPUB]); + if (empty($contacts[$contact['url']])) { + $data['cc'][] = $contact['url']; + $contacts[$contact['url']] = $contact['url']; + } + } + } + + $parents = Item::select(['id', 'author-link', 'owner-link', 'gravity'], ['parent' => $item['parent']]); + while ($parent = Item::fetch($parents)) { + // Don't include data from future posts + if ($parent['id'] >= $item['id']) { + continue; + } + + $profile = APContact::getByURL($parent['author-link'], false); + if (!empty($profile) && empty($contacts[$profile['url']])) { + $data['cc'][] = $profile['url']; + $contacts[$profile['url']] = $profile['url']; + } + + if ($item['gravity'] != GRAVITY_PARENT) { + continue; + } + + $profile = APContact::getByURL($parent['owner-link'], false); + if (!empty($profile) && empty($contacts[$profile['url']])) { + $data['cc'][] = $profile['url']; + $contacts[$profile['url']] = $profile['url']; + } + } + DBA::close($parents); + + if (empty($data['to'])) { + $data['to'] = $data['cc']; + $data['cc'] = []; + } + + return $data; + } + + /** + * @brief Fetches a list of inboxes of followers of a given user + * + * @param integer $uid User ID + * + * @return array of follower inboxes + */ + public static function fetchTargetInboxesforUser($uid) + { + $inboxes = []; + + $condition = ['uid' => $uid, 'network' => Protocol::ACTIVITYPUB, 'archive' => false, 'pending' => false]; + + if (!empty($uid)) { + $condition['rel'] = [Contact::FOLLOWER, Contact::FRIEND]; + } + + $contacts = DBA::select('contact', ['notify', 'batch'], $condition); + while ($contact = DBA::fetch($contacts)) { + $contact = defaults($contact, 'batch', $contact['notify']); + $inboxes[$contact] = $contact; + } + DBA::close($contacts); + + return $inboxes; + } + + /** + * @brief Fetches an array of inboxes for the given item and user + * + * @param array $item + * @param integer $uid User ID + * + * @return array with inboxes + */ + public static function fetchTargetInboxes($item, $uid) + { + $permissions = self::createPermissionBlockForItem($item); + if (empty($permissions)) { + return []; + } + + $inboxes = []; + + if ($item['gravity'] == GRAVITY_ACTIVITY) { + $item_profile = APContact::getByURL($item['author-link']); + } else { + $item_profile = APContact::getByURL($item['owner-link']); + } + + foreach (['to', 'cc', 'bto', 'bcc'] as $element) { + if (empty($permissions[$element])) { + continue; + } + + foreach ($permissions[$element] as $receiver) { + if ($receiver == $item_profile['followers']) { + $inboxes = self::fetchTargetInboxesforUser($uid); + } else { + $profile = APContact::getByURL($receiver); + if (!empty($profile)) { + $target = defaults($profile, 'sharedinbox', $profile['inbox']); + $inboxes[$target] = $target; + } + } + } + } + + return $inboxes; + } + + /** + * @brief Returns the activity type of a given item + * + * @param array $item + * + * @return activity type + */ + public static function getTypeOfItem($item) + { + if ($item['verb'] == ACTIVITY_POST) { + if ($item['created'] == $item['edited']) { + $type = 'Create'; + } else { + $type = 'Update'; + } + } elseif ($item['verb'] == ACTIVITY_LIKE) { + $type = 'Like'; + } elseif ($item['verb'] == ACTIVITY_DISLIKE) { + $type = 'Dislike'; + } elseif ($item['verb'] == ACTIVITY_ATTEND) { + $type = 'Accept'; + } elseif ($item['verb'] == ACTIVITY_ATTENDNO) { + $type = 'Reject'; + } elseif ($item['verb'] == ACTIVITY_ATTENDMAYBE) { + $type = 'TentativeAccept'; + } else { + $type = ''; + } + + return $type; + } + + /** + * @brief Creates an activity array for a given item id + * + * @param integer $item_id + * @param boolean $object_mode Is the activity item is used inside another object? + * + * @return array of activity + */ + public static function createActivityFromItem($item_id, $object_mode = false) + { + $item = Item::selectFirst([], ['id' => $item_id, 'parent-network' => Protocol::NATIVE_SUPPORT]); + + if (!DBA::isResult($item)) { + return false; + } + + $condition = ['item-uri' => $item['uri'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB]; + $conversation = DBA::selectFirst('conversation', ['source'], $condition); + if (DBA::isResult($conversation)) { + $data = json_decode($conversation['source']); + if (!empty($data)) { + return $data; + } + } + + $type = self::getTypeOfItem($item); + + if (!$object_mode) { + $data = ['@context' => ActivityPub::CONTEXT]; + + if ($item['deleted'] && ($item['gravity'] == GRAVITY_ACTIVITY)) { + $type = 'Undo'; + } elseif ($item['deleted']) { + $type = 'Delete'; + } + } else { + $data = []; + } + + $data['id'] = $item['uri'] . '#' . $type; + $data['type'] = $type; + $data['actor'] = $item['author-link']; + + $data['published'] = DateTimeFormat::utc($item["created"]."+00:00", DateTimeFormat::ATOM); + + if ($item["created"] != $item["edited"]) { + $data['updated'] = DateTimeFormat::utc($item["edited"]."+00:00", DateTimeFormat::ATOM); + } + + $data['context'] = self::fetchContextURLForItem($item); + + $data = array_merge($data, self::createPermissionBlockForItem($item)); + + if (in_array($data['type'], ['Create', 'Update', 'Announce', 'Delete'])) { + $data['object'] = self::createNote($item); + } elseif ($data['type'] == 'Undo') { + $data['object'] = self::createActivityFromItem($item_id, true); + } else { + $data['object'] = $item['thr-parent']; + } + + $owner = User::getOwnerDataById($item['uid']); + + if (!$object_mode) { + return LDSignature::sign($data, $owner); + } else { + return $data; + } + } + + /** + * @brief Creates an object array for a given item id + * + * @param integer $item_id + * + * @return object array + */ + public static function createObjectFromItemID($item_id) + { + $item = Item::selectFirst([], ['id' => $item_id, 'parent-network' => Protocol::NATIVE_SUPPORT]); + + if (!DBA::isResult($item)) { + return false; + } + + $data = ['@context' => ActivityPub::CONTEXT]; + $data = array_merge($data, self::createNote($item)); + + return $data; + } + + /** + * @brief Returns a tag array for a given item array + * + * @param array $item + * + * @return array of tags + */ + private static function createTagList($item) + { + $tags = []; + + $terms = Term::tagArrayFromItemId($item['id'], TERM_MENTION); + foreach ($terms as $term) { + $contact = Contact::getDetailsByURL($term['url']); + if (!empty($contact['addr'])) { + $mention = '@' . $contact['addr']; + } else { + $mention = '@' . $term['url']; + } + + $tags[] = ['type' => 'Mention', 'href' => $term['url'], 'name' => $mention]; + } + return $tags; + } + + /** + * @brief Fetches the "context" value for a givem item array from the "conversation" table + * + * @param array $item + * + * @return string with context url + */ + private static function fetchContextURLForItem($item) + { + $conversation = DBA::selectFirst('conversation', ['conversation-href', 'conversation-uri'], ['item-uri' => $item['parent-uri']]); + if (DBA::isResult($conversation) && !empty($conversation['conversation-href'])) { + $context_uri = $conversation['conversation-href']; + } elseif (DBA::isResult($conversation) && !empty($conversation['conversation-uri'])) { + $context_uri = $conversation['conversation-uri']; + } else { + $context_uri = str_replace('/objects/', '/context/', $item['parent-uri']); + } + return $context_uri; + } + + /** + * @brief Creates a note/article object array + * + * @param array $item + * + * @return object array + */ + private static function createNote($item) + { + if (!empty($item['title'])) { + $type = 'Article'; + } else { + $type = 'Note'; + } + + if ($item['deleted']) { + $type = 'Tombstone'; + } + + $data = []; + $data['id'] = $item['uri']; + $data['type'] = $type; + + if ($item['deleted']) { + return $data; + } + + $data['summary'] = null; // Ignore by now + + if ($item['uri'] != $item['thr-parent']) { + $data['inReplyTo'] = $item['thr-parent']; + } else { + $data['inReplyTo'] = null; + } + + $data['diaspora:guid'] = $item['guid']; + $data['published'] = DateTimeFormat::utc($item["created"]."+00:00", DateTimeFormat::ATOM); + + if ($item["created"] != $item["edited"]) { + $data['updated'] = DateTimeFormat::utc($item["edited"]."+00:00", DateTimeFormat::ATOM); + } + + $data['url'] = $item['plink']; + $data['attributedTo'] = $item['author-link']; + $data['actor'] = $item['author-link']; + $data['sensitive'] = false; // - Query NSFW + $data['context'] = self::fetchContextURLForItem($item); + + if (!empty($item['title'])) { + $data['name'] = BBCode::convert($item['title'], false, 7); + } + + $data['content'] = BBCode::convert($item['body'], false, 7); + $data['source'] = ['content' => $item['body'], 'mediaType' => "text/bbcode"]; + + if (!empty($item['signed_text']) && ($item['uri'] != $item['thr-parent'])) { + $data['diaspora:comment'] = $item['signed_text']; + } + + $data['attachment'] = []; // @ToDo + $data['tag'] = self::createTagList($item); + $data = array_merge($data, self::createPermissionBlockForItem($item)); + + return $data; + } + + /** + * @brief Transmits a profile deletion to a given inbox + * + * @param integer $uid User ID + * @param string $inbox Target inbox + */ + public static function transmitProfileDeletion($uid, $inbox) + { + $owner = User::getOwnerDataById($uid); + $profile = APContact::getByURL($owner['url']); + + $data = ['@context' => 'https://www.w3.org/ns/activitystreams', + 'id' => System::baseUrl() . '/activity/' . System::createGUID(), + 'type' => 'Delete', + 'actor' => $owner['url'], + 'object' => self::profile($uid), + 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM), + 'to' => [ActivityPub::PUBLIC_COLLECTION], + 'cc' => []]; + + $signed = LDSignature::sign($data, $owner); + + logger('Deliver profile deletion for user ' . $uid . ' to ' . $inbox .' via ActivityPub', LOGGER_DEBUG); + HTTPSignature::transmit($signed, $inbox, $uid); + } + + /** + * @brief Transmits a profile change to a given inbox + * + * @param integer $uid User ID + * @param string $inbox Target inbox + */ + public static function transmitProfileUpdate($uid, $inbox) + { + $owner = User::getOwnerDataById($uid); + $profile = APContact::getByURL($owner['url']); + + $data = ['@context' => 'https://www.w3.org/ns/activitystreams', + 'id' => System::baseUrl() . '/activity/' . System::createGUID(), + 'type' => 'Update', + 'actor' => $owner['url'], + 'object' => self::profile($uid), + 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM), + 'to' => [$profile['followers']], + 'cc' => []]; + + $signed = LDSignature::sign($data, $owner); + + logger('Deliver profile update for user ' . $uid . ' to ' . $inbox .' via ActivityPub', LOGGER_DEBUG); + HTTPSignature::transmit($signed, $inbox, $uid); + } + + /** + * @brief Transmits a given activity to a target + * + * @param array $activity + * @param string $target Target profile + * @param integer $uid User ID + */ + public static function transmitActivity($activity, $target, $uid) + { + $profile = APContact::getByURL($target); + + $owner = User::getOwnerDataById($uid); + + $data = ['@context' => 'https://www.w3.org/ns/activitystreams', + 'id' => System::baseUrl() . '/activity/' . System::createGUID(), + 'type' => $activity, + 'actor' => $owner['url'], + 'object' => $profile['url'], + 'to' => $profile['url']]; + + logger('Sending activity ' . $activity . ' to ' . $target . ' for user ' . $uid, LOGGER_DEBUG); + + $signed = LDSignature::sign($data, $owner); + HTTPSignature::transmit($signed, $profile['inbox'], $uid); + } + + /** + * @brief Transmit a message that the contact request had been accepted + * + * @param string $target Target profile + * @param $id + * @param integer $uid User ID + */ + public static function transmitContactAccept($target, $id, $uid) + { + $profile = APContact::getByURL($target); + + $owner = User::getOwnerDataById($uid); + $data = ['@context' => 'https://www.w3.org/ns/activitystreams', + 'id' => System::baseUrl() . '/activity/' . System::createGUID(), + 'type' => 'Accept', + 'actor' => $owner['url'], + 'object' => ['id' => $id, 'type' => 'Follow', + 'actor' => $profile['url'], + 'object' => $owner['url']], + 'to' => $profile['url']]; + + logger('Sending accept to ' . $target . ' for user ' . $uid . ' with id ' . $id, LOGGER_DEBUG); + + $signed = LDSignature::sign($data, $owner); + HTTPSignature::transmit($signed, $profile['inbox'], $uid); + } + + /** + * @brief + * + * @param string $target Target profile + * @param $id + * @param integer $uid User ID + */ + public static function transmitContactReject($target, $id, $uid) + { + $profile = APContact::getByURL($target); + + $owner = User::getOwnerDataById($uid); + $data = ['@context' => 'https://www.w3.org/ns/activitystreams', + 'id' => System::baseUrl() . '/activity/' . System::createGUID(), + 'type' => 'Reject', + 'actor' => $owner['url'], + 'object' => ['id' => $id, 'type' => 'Follow', + 'actor' => $profile['url'], + 'object' => $owner['url']], + 'to' => $profile['url']]; + + logger('Sending reject to ' . $target . ' for user ' . $uid . ' with id ' . $id, LOGGER_DEBUG); + + $signed = LDSignature::sign($data, $owner); + HTTPSignature::transmit($signed, $profile['inbox'], $uid); + } + + /** + * @brief + * + * @param string $target Target profile + * @param integer $uid User ID + */ + public static function transmitContactUndo($target, $uid) + { + $profile = APContact::getByURL($target); + + $id = System::baseUrl() . '/activity/' . System::createGUID(); + + $owner = User::getOwnerDataById($uid); + $data = ['@context' => 'https://www.w3.org/ns/activitystreams', + 'id' => $id, + 'type' => 'Undo', + 'actor' => $owner['url'], + 'object' => ['id' => $id, 'type' => 'Follow', + 'actor' => $owner['url'], + 'object' => $profile['url']], + 'to' => $profile['url']]; + + logger('Sending undo to ' . $target . ' for user ' . $uid . ' with id ' . $id, LOGGER_DEBUG); + + $signed = LDSignature::sign($data, $owner); + HTTPSignature::transmit($signed, $profile['inbox'], $uid); + } +}