3 * @copyright Copyright (C) 2010-2021, the Friendica project
5 * @license GNU AGPL version 3 or any later version
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU Affero General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Affero General Public License for more details.
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
22 namespace Friendica\Worker;
24 use Friendica\Core\Hook;
25 use Friendica\Core\Logger;
26 use Friendica\Core\Protocol;
27 use Friendica\Core\Worker;
28 use Friendica\Database\DBA;
30 use Friendica\Model\Contact;
31 use Friendica\Model\Conversation;
32 use Friendica\Model\Group;
33 use Friendica\Model\Item;
34 use Friendica\Model\Post;
35 use Friendica\Model\PushSubscriber;
36 use Friendica\Model\Tag;
37 use Friendica\Model\User;
38 use Friendica\Protocol\Activity;
39 use Friendica\Protocol\ActivityPub;
40 use Friendica\Protocol\Diaspora;
41 use Friendica\Protocol\OStatus;
42 use Friendica\Protocol\Relay;
43 use Friendica\Protocol\Salmon;
44 use Friendica\Util\Network;
47 * The notifier is typically called with:
49 * Worker::add(PRIORITY_HIGH, "Notifier", COMMAND, ITEM_ID);
51 * where COMMAND is one of the constants that are defined in Worker/Delivery.php
52 * and ITEM_ID is the id of the item in the database that needs to be sent to others.
57 public static function execute(string $cmd, int $post_uriid, int $sender_uid = 0)
61 Logger::info('Invoked', ['cmd' => $cmd, 'target' => $post_uriid, 'sender_uid' => $sender_uid]);
63 $target_id = $post_uriid;
68 $delivery_contacts_stmt = null;
73 $delivery_queue_count = 0;
76 if ($cmd == Delivery::MAIL) {
77 $message = DBA::selectFirst('mail', ['uid', 'contact-id'], ['id' => $target_id]);
78 if (!DBA::isResult($message)) {
81 $uid = $message['uid'];
82 $recipients[] = $message['contact-id'];
84 $mail = ActivityPub\Transmitter::ItemArrayFromMail($target_id);
85 $inboxes = ActivityPub\Transmitter::fetchTargetInboxes($mail, $uid, true);
86 foreach ($inboxes as $inbox => $receivers) {
87 $ap_contacts = array_merge($ap_contacts, $receivers);
88 Logger::info('Delivery via ActivityPub', ['cmd' => $cmd, 'target' => $target_id, 'inbox' => $inbox]);
89 Worker::add(['priority' => PRIORITY_HIGH, 'created' => $a->queue['created'], 'dont_fork' => true],
90 'APDelivery', $cmd, $target_id, $inbox, $uid, $receivers, $post_uriid);
92 } elseif ($cmd == Delivery::SUGGESTION) {
93 $suggest = DI::fsuggest()->getById($target_id);
95 $recipients[] = $suggest->cid;
96 } elseif ($cmd == Delivery::REMOVAL) {
97 return self::notifySelfRemoval($target_id, $a->queue['priority'], $a->queue['created']);
98 } elseif ($cmd == Delivery::RELOCATION) {
101 $condition = ['uid' => $target_id, 'self' => false, 'network' => [Protocol::DFRN, Protocol::DIASPORA]];
102 $delivery_contacts_stmt = DBA::select('contact', ['id', 'url', 'addr', 'network', 'protocol', 'batch'], $condition);
104 $post = Post::selectFirst(['id'], ['uri-id' => $post_uriid, 'uid' => $sender_uid]);
105 if (!DBA::isResult($post)) {
106 Logger::warning('Post not found', ['uri-id' => $post_uriid, 'uid' => $sender_uid]);
109 $target_id = $post['id'];
112 $condition = ['id' => $target_id, 'visible' => true];
113 $target_item = Post::selectFirst(Item::DELIVER_FIELDLIST, $condition);
115 if (!DBA::isResult($target_item) || !intval($target_item['parent'])) {
116 Logger::info('No target item', ['cmd' => $cmd, 'target' => $target_id]);
120 if (!empty($target_item['contact-uid'])) {
121 $uid = $target_item['contact-uid'];
122 } elseif (!empty($target_item['uid'])) {
123 $uid = $target_item['uid'];
125 Logger::info('Only public users, quitting', ['target' => $target_id]);
129 $condition = ['parent' => $target_item['parent'], 'visible' => true];
130 $params = ['order' => ['id']];
131 $items_stmt = Post::select(Item::DELIVER_FIELDLIST, $condition, $params);
132 if (!DBA::isResult($items_stmt)) {
133 Logger::info('No item found', ['cmd' => $cmd, 'target' => $target_id]);
137 $items = Post::toArray($items_stmt);
139 // avoid race condition with deleting entries
140 if ($items[0]['deleted']) {
141 foreach ($items as $item) {
142 $item['deleted'] = 1;
146 $top_level = $target_item['gravity'] == GRAVITY_PARENT;
149 $owner = User::getOwnerDataById($uid);
151 Logger::info('Owner not found', ['cmd' => $cmd, 'target' => $target_id]);
155 // Should the post be transmitted to Diaspora?
156 $diaspora_delivery = true;
158 // If this is a public conversation, notify the feed hub
159 $public_message = true;
164 $push_notify = false;
166 // Deliver directly to a forum, don't PuSH
167 $direct_forum_delivery = false;
170 $recipients_followup = [];
172 if (!empty($target_item) && !empty($items)) {
175 $fields = ['network', 'author-id', 'author-link', 'author-network', 'owner-id'];
176 $condition = ['uri' => $target_item["thr-parent"], 'uid' => $target_item["uid"]];
177 $thr_parent = Post::selectFirst($fields, $condition);
178 if (empty($thr_parent)) {
179 $thr_parent = $parent;
182 Logger::log('GUID: ' . $target_item["guid"] . ': Parent is ' . $parent['network'] . '. Thread parent is ' . $thr_parent['network'], Logger::DEBUG);
184 if (!self::isRemovalActivity($cmd, $owner, Protocol::ACTIVITYPUB)) {
185 $apdelivery = self::activityPubDelivery($cmd, $target_item, $parent, $thr_parent, $a->queue['priority'], $a->queue['created'], $owner);
186 $ap_contacts = $apdelivery['contacts'];
187 $delivery_queue_count += $apdelivery['count'];
190 // Only deliver threaded replies (comment to a comment) to Diaspora
191 // when the original comment author does support the Diaspora protocol.
192 if ($thr_parent['author-link'] && $target_item['parent-uri'] != $target_item['thr-parent']) {
193 $diaspora_delivery = Diaspora::isSupportedByContactUrl($thr_parent['author-link']);
194 Logger::info('Threaded comment', ['diaspora_delivery' => (int)$diaspora_delivery]);
197 $unlisted = $target_item['private'] == Item::UNLISTED;
199 // This is IMPORTANT!!!!
201 // We will only send a "notify owner to relay" or followup message if the referenced post
202 // originated on our system by virtue of having our hostname somewhere
203 // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
205 // if $parent['wall'] == 1 we will already have the parent message in our array
206 // and we will relay the whole lot.
208 $localhost = str_replace('www.','', DI::baseUrl()->getHostname());
209 if (strpos($localhost,':')) {
210 $localhost = substr($localhost,0,strpos($localhost,':'));
214 * Be VERY CAREFUL if you make any changes to the following several lines. Seemingly innocuous changes
215 * have been known to cause runaway conditions which affected several servers, along with
216 * permissions issues.
220 $relay_to_owner = false;
222 if (!$top_level && ($parent['wall'] == 0) && (stristr($target_item['uri'],$localhost))) {
223 $relay_to_owner = true;
226 if (($cmd === Delivery::UPLINK) && (intval($parent['forum_mode']) == 1) && !$top_level) {
227 $relay_to_owner = true;
230 // until the 'origin' flag has been in use for several months
231 // we will just use it as a fallback test
232 // later we will be able to use it as the primary test of whether or not to relay.
234 if (!$target_item['origin']) {
235 $relay_to_owner = false;
237 if ($parent['origin']) {
238 $relay_to_owner = false;
241 // Special treatment for forum posts
242 if (Item::isForumPost($target_item, $owner)) {
243 $relay_to_owner = true;
244 $direct_forum_delivery = true;
247 // Avoid that comments in a forum thread are sent to OStatus
248 if (Item::isForumPost($parent, $owner)) {
249 $direct_forum_delivery = true;
252 if ($relay_to_owner) {
253 // local followup to remote post
255 $public_message = false; // not public
256 $recipients = [$parent['contact-id']];
257 $recipients_followup = [$parent['contact-id']];
259 Logger::info('Followup', ['target' => $target_id, 'guid' => $target_item['guid'], 'to' => $parent['contact-id']]);
261 if (($target_item['private'] != Item::PRIVATE) &&
262 (strlen($target_item['allow_cid'].$target_item['allow_gid'].
263 $target_item['deny_cid'].$target_item['deny_gid']) == 0))
266 if (($thr_parent && ($thr_parent['network'] == Protocol::OSTATUS)) || ($parent['network'] == Protocol::OSTATUS)) {
269 if ($parent["network"] == Protocol::OSTATUS) {
270 // Distribute the message to the DFRN contacts as if this wasn't a followup since OStatus can't relay comments
271 // Currently it is work at progress
272 $condition = ['uid' => $uid, 'network' => Protocol::DFRN, 'blocked' => false, 'pending' => false, 'archive' => false];
273 $followup_contacts_stmt = DBA::select('contact', ['id'], $condition);
274 while($followup_contact = DBA::fetch($followup_contacts_stmt)) {
275 $recipients_followup[] = $followup_contact['id'];
277 DBA::close($followup_contacts_stmt);
281 if ($direct_forum_delivery) {
282 $push_notify = false;
285 Logger::log('Notify ' . $target_item["guid"] .' via PuSH: ' . ($push_notify ? "Yes":"No"), Logger::DEBUG);
289 Logger::info('Distributing directly', ['target' => $target_id, 'guid' => $target_item['guid']]);
291 // don't send deletions onward for other people's stuff
293 if ($target_item['deleted'] && !intval($target_item['wall'])) {
294 Logger::log('Ignoring delete notification for non-wall item');
298 if (strlen($parent['allow_cid'])
299 || strlen($parent['allow_gid'])
300 || strlen($parent['deny_cid'])
301 || strlen($parent['deny_gid'])) {
302 $public_message = false; // private recipients, not public
305 $aclFormatter = DI::aclFormatter();
307 $allow_people = $aclFormatter->expand($parent['allow_cid']);
308 $allow_groups = Group::expand($uid, $aclFormatter->expand($parent['allow_gid']),true);
309 $deny_people = $aclFormatter->expand($parent['deny_cid']);
310 $deny_groups = Group::expand($uid, $aclFormatter->expand($parent['deny_gid']));
312 // if our parent is a public forum (forum_mode == 1), uplink to the origional author causing
313 // a delivery fork. private groups (forum_mode == 2) do not uplink
314 /// @todo Possibly we should not uplink when the author is the forum itself?
316 if ((intval($parent['forum_mode']) == 1) && !$top_level && ($cmd !== Delivery::UPLINK)
317 && ($target_item['verb'] != Activity::ANNOUNCE)) {
318 Worker::add($a->queue['priority'], 'Notifier', Delivery::UPLINK, $post_uriid, $sender_uid);
321 foreach ($items as $item) {
322 $recipients[] = $item['contact-id'];
323 // pull out additional tagged people to notify (if public message)
324 if ($public_message && strlen($item['inform'])) {
325 $people = explode(',',$item['inform']);
326 foreach ($people as $person) {
327 if (substr($person,0,4) === 'cid:') {
328 $recipients[] = intval(substr($person,4));
330 $url_recipients[] = substr($person,4);
336 if (count($url_recipients)) {
337 Logger::notice('Deliver', ['target' => $target_id, 'guid' => $target_item['guid'], 'recipients' => $url_recipients]);
340 $recipients = array_unique(array_merge($recipients, $allow_people, $allow_groups));
341 $deny = array_unique(array_merge($deny_people, $deny_groups));
342 $recipients = array_diff($recipients, $deny);
344 // If this is a public message and pubmail is set on the parent, include all your email contacts
346 function_exists('imap_open')
347 && !DI::config()->get('system','imap_disabled')
349 && intval($target_item['pubmail'])
351 $mail_contacts_stmt = DBA::select('contact', ['id'], ['uid' => $uid, 'network' => Protocol::MAIL]);
352 while ($mail_contact = DBA::fetch($mail_contacts_stmt)) {
353 $recipients[] = $mail_contact['id'];
355 DBA::close($mail_contacts_stmt);
359 // If the thread parent is OStatus then do some magic to distribute the messages.
360 // We have not only to look at the parent, since it could be a Friendica thread.
361 if (($thr_parent && ($thr_parent['network'] == Protocol::OSTATUS)) || ($parent['network'] == Protocol::OSTATUS)) {
362 $diaspora_delivery = false;
364 Logger::log('Some parent is OStatus for '.$target_item["guid"]." - Author: ".$thr_parent['author-id']." - Owner: ".$thr_parent['owner-id'], Logger::DEBUG);
366 // Send a salmon to the parent author
367 $probed_contact = DBA::selectFirst('contact', ['url', 'notify'], ['id' => $thr_parent['author-id']]);
368 if (DBA::isResult($probed_contact) && !empty($probed_contact["notify"])) {
369 Logger::notice('Notify parent author', ['url' => $probed_contact["url"], 'notify' => $probed_contact["notify"]]);
370 $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
373 // Send a salmon to the parent owner
374 $probed_contact = DBA::selectFirst('contact', ['url', 'notify'], ['id' => $thr_parent['owner-id']]);
375 if (DBA::isResult($probed_contact) && !empty($probed_contact["notify"])) {
376 Logger::notice('Notify parent owner', ['url' => $probed_contact["url"], 'notify' => $probed_contact["notify"]]);
377 $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
380 // Send a salmon notification to every person we mentioned in the post
381 foreach (Tag::getByURIId($target_item['uri-id'], [Tag::MENTION, Tag::EXCLUSIVE_MENTION, Tag::IMPLICIT_MENTION]) as $tag) {
382 $probed_contact = Contact::getByURL($tag['url']);
383 if (!empty($probed_contact['notify'])) {
384 Logger::notice('Notify mentioned user', ['url' => $probed_contact["url"], 'notify' => $probed_contact["notify"]]);
385 $url_recipients[$probed_contact['notify']] = $probed_contact['notify'];
389 // It only makes sense to distribute answers to OStatus messages to Friendica and OStatus - but not Diaspora
390 $networks = [Protocol::DFRN];
391 } elseif ($diaspora_delivery) {
392 $networks = [Protocol::DFRN, Protocol::DIASPORA, Protocol::MAIL];
393 if (($parent['network'] == Protocol::DIASPORA) || ($thr_parent['network'] == Protocol::DIASPORA)) {
394 Logger::info('Add AP contacts', ['target' => $target_id, 'guid' => $target_item['guid']]);
395 $networks[] = Protocol::ACTIVITYPUB;
398 $networks = [Protocol::DFRN, Protocol::MAIL];
401 $public_message = false;
404 if (empty($delivery_contacts_stmt)) {
406 $recipients = $recipients_followup;
408 $condition = ['id' => $recipients, 'self' => false, 'uid' => [0, $uid],
409 'blocked' => false, 'pending' => false, 'archive' => false];
410 if (!empty($networks)) {
411 $condition['network'] = $networks;
413 $delivery_contacts_stmt = DBA::select('contact', ['id', 'addr', 'url', 'network', 'protocol', 'batch'], $condition);
417 $batch_delivery = false;
419 if ($public_message && !in_array($cmd, [Delivery::MAIL, Delivery::SUGGESTION]) && !$followup) {
422 if ($diaspora_delivery && !$unlisted) {
423 $batch_delivery = true;
425 $relay_list_stmt = DBA::p(
427 `batch`, `network`, `protocol`,
428 ANY_VALUE(`id`) AS `id`,
429 ANY_VALUE(`url`) AS `url`,
430 ANY_VALUE(`name`) AS `name`
439 GROUP BY `batch`, `network`, `protocol`",
444 $relay_list = DBA::toArray($relay_list_stmt);
446 // Fetch the participation list
447 // The function will ensure that there are no duplicates
448 $relay_list = Diaspora::participantsForThread($target_item, $relay_list);
450 // Add the relay to the list, avoid duplicates.
451 // Don't send community posts to the relay. Forum posts via the Diaspora protocol are looking ugly.
452 if (!$followup && !Item::isForumPost($target_item, $owner) && !self::isForumPost($target_item)) {
453 $relay_list = Relay::getList($target_id, $relay_list, [Protocol::DFRN, Protocol::DIASPORA]);
457 $condition = ['network' => Protocol::DFRN, 'uid' => $owner['uid'], 'blocked' => false,
458 'pending' => false, 'archive' => false, 'rel' => [Contact::FOLLOWER, Contact::FRIEND]];
460 $contacts = DBA::toArray(DBA::select('contact', ['id', 'url', 'addr', 'name', 'network', 'protocol'], $condition));
462 $conversants = array_merge($contacts, $relay_list);
464 $delivery_queue_count += self::delivery($cmd, $post_uriid, $sender_uid, $target_item, $thr_parent, $owner, $batch_delivery, true, $conversants, $ap_contacts, []);
469 $contacts = DBA::toArray($delivery_contacts_stmt);
470 $delivery_queue_count += self::delivery($cmd, $post_uriid, $sender_uid, $target_item, $thr_parent, $owner, $batch_delivery, false, $contacts, $ap_contacts, $conversants);
472 $delivery_queue_count += self::deliverOStatus($target_id, $target_item, $owner, $url_recipients, $public_message, $push_notify);
474 if (!empty($target_item)) {
475 Logger::log('Calling hooks for ' . $cmd . ' ' . $target_id, Logger::DEBUG);
477 Hook::fork($a->queue['priority'], 'notifier_normal', $target_item);
479 Hook::callAll('notifier_end', $target_item);
481 // Workaround for pure connector posts
482 if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
483 if ($delivery_queue_count == 0) {
484 Post\DeliveryData::incrementQueueDone($target_item['uri-id']);
485 $delivery_queue_count = 1;
488 Post\DeliveryData::incrementQueueCount($target_item['uri-id'], $delivery_queue_count);
496 * Deliver the message to the contacts
499 * @param int $post_uriid
500 * @param int $sender_uid
501 * @param array $target_item
502 * @param array $thr_parent
503 * @param array $owner
504 * @param bool $batch_delivery
505 * @param array $contacts
506 * @param array $ap_contacts
507 * @param array $conversants
509 * @throws InternalServerErrorException
512 private static function delivery(string $cmd, int $post_uriid, int $sender_uid, array $target_item, array $thr_parent, array $owner, bool $batch_delivery, bool $in_batch, array $contacts, array $ap_contacts, array $conversants = [])
515 $delivery_queue_count = 0;
517 foreach ($contacts as $contact) {
518 // Direct delivery of local contacts
519 if ($target_uid = User::getIdForURL($contact['url'])) {
520 Logger::info('Direct delivery', ['uri-id' => $target_item['uri-id'], 'target' => $target_uid]);
521 $fields = ['protocol' => Conversation::PARCEL_LOCAL_DFRN, 'direction' => Conversation::PUSH];
522 Item::storeForUserByUriId($target_item['uri-id'], $target_uid, $fields, $target_item['uid']);
526 // Deletions are always sent via DFRN as well.
527 // This is done until we can perform deletions of foreign comments on our own threads via AP.
528 if (($cmd != Delivery::DELETION) && in_array($contact['id'], $ap_contacts)) {
529 Logger::info('Contact is already delivered via AP, so skip delivery via legacy DFRN/Diaspora', ['target' => $post_uriid, 'uid' => $sender_uid, 'contact' => $contact['url']]);
533 if (!empty($contact['id']) && Contact::isArchived($contact['id'])) {
534 Logger::info('Contact is archived, so skip delivery', ['target' => $post_uriid, 'uid' => $sender_uid, 'contact' => $contact['url']]);
538 if (self::isRemovalActivity($cmd, $owner, $contact['network'])) {
539 Logger::info('Contact does no supports account removal commands, so skip delivery', ['target' => $post_uriid, 'uid' => $sender_uid, 'contact' => $contact['url']]);
543 if (self::skipActivityPubForDiaspora($contact, $target_item, $thr_parent)) {
544 Logger::info('Contact is from Diaspora, but the replied author is from ActivityPub, so skip delivery via Diaspora', ['id' => $post_uriid, 'uid' => $sender_uid, 'url' => $contact['url']]);
548 // Don't deliver to Diaspora if it already had been done as batch delivery
549 if (!$in_batch && $batch_delivery && ($contact['network'] == Protocol::DIASPORA)) {
550 Logger::info('Diaspora contact is already delivered via batch', ['id' => $post_uriid, 'uid' => $sender_uid, 'contact' => $contact]);
554 // Don't deliver to folks who have already been delivered to
555 if (in_array($contact['id'], $conversants)) {
556 Logger::info('Already delivery', ['id' => $post_uriid, 'uid' => $sender_uid, 'contact' => $contact]);
560 Logger::info('Delivery', ['batch' => $in_batch, 'target' => $post_uriid, 'uid' => $sender_uid, 'guid' => $target_item['guid'] ?? '', 'to' => $contact]);
562 // Ensure that posts with our own protocol arrives before Diaspora posts arrive.
563 // Situation is that sometimes Friendica servers receive Friendica posts over the Diaspora protocol first.
564 // The conversion in Markdown reduces the formatting, so these posts should arrive after the Friendica posts.
565 // This is only important for high and medium priority tasks and not for Low priority jobs like deletions.
566 if (($contact['network'] == Protocol::DIASPORA) && in_array($a->queue['priority'], [PRIORITY_HIGH, PRIORITY_MEDIUM])) {
567 $deliver_options = ['priority' => $a->queue['priority'], 'dont_fork' => true];
569 $deliver_options = ['priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true];
572 if (Worker::add($deliver_options, 'Delivery', $cmd, $post_uriid, (int)$contact['id'], $sender_uid)) {
573 $delivery_queue_count++;
576 return $delivery_queue_count;
580 * Deliver the message via OStatus
582 * @param int $target_id
583 * @param array $target_item
584 * @param array $owner
585 * @param array $url_recipients
586 * @param bool $public_message
587 * @param bool $push_notify
589 * @throws InternalServerErrorException
592 private static function deliverOStatus(int $target_id, array $target_item, array $owner, array $url_recipients, bool $public_message, bool $push_notify)
595 $delivery_queue_count = 0;
597 $url_recipients = array_filter($url_recipients);
598 // send salmon slaps to mentioned remote tags (@foo@example.com) in OStatus posts
599 // They are especially used for notifications to OStatus users that don't follow us.
600 if (!DI::config()->get('system', 'dfrn_only') && count($url_recipients) && ($public_message || $push_notify) && !empty($target_item)) {
601 $slap = OStatus::salmon($target_item, $owner);
602 foreach ($url_recipients as $url) {
603 Logger::info('Salmon delivery', ['item' => $target_id, 'to' => $url]);
605 $delivery_queue_count++;
606 Salmon::slapper($owner, $url, $slap);
607 Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Post\DeliveryData::OSTATUS);
611 // Notify PuSH subscribers (Used for OStatus distribution of regular posts)
613 Logger::info('Activating internal PuSH', ['item' => $target_id]);
615 // Handling the pubsubhubbub requests
616 PushSubscriber::publishFeed($owner['uid'], $a->queue['priority']);
618 return $delivery_queue_count;
622 * Checks if the current delivery shouldn't be transported to Diaspora.
623 * This is done for posts from AP authors or posts that are comments to AP authors.
625 * @param array $contact Receiver of the post
626 * @param array $item The post
627 * @param array $thr_parent The thread parent
630 private static function skipActivityPubForDiaspora(array $contact, array $item, array $thr_parent)
632 // No skipping needs to be done when delivery isn't done to Diaspora
633 if ($contact['network'] != Protocol::DIASPORA) {
637 // Skip the delivery to Diaspora if the item is from an ActivityPub author
638 if (!empty($item['author-network']) && ($item['author-network'] == Protocol::ACTIVITYPUB)) {
642 // Skip the delivery to Diaspora if the thread parent is from an ActivityPub author
643 if (!empty($thr_parent['author-network']) && ($thr_parent['author-network'] == Protocol::ACTIVITYPUB)) {
651 * Checks if the current action is a deletion command of a account removal activity
652 * For Diaspora and ActivityPub we don't need to send single item deletion calls.
653 * These protocols do have a dedicated command for deleting a whole account.
655 * @param string $cmd Notifier command
656 * @param array $owner Sender of the post
657 * @param string $network Receiver network
659 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
660 * @throws \ImagickException
662 private static function isRemovalActivity($cmd, $owner, $network)
664 return ($cmd == Delivery::DELETION) && $owner['account_removed'] && in_array($network, [Protocol::ACTIVITYPUB, Protocol::DIASPORA]);
668 * @param int $self_user_id
669 * @param int $priority The priority the Notifier queue item was created with
670 * @param string $created The date the Notifier queue item was created on
672 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
673 * @throws \ImagickException
675 private static function notifySelfRemoval($self_user_id, $priority, $created)
677 $owner = User::getOwnerDataById($self_user_id);
682 $contacts_stmt = DBA::select('contact', [], ['self' => false, 'uid' => $self_user_id]);
683 if (!DBA::isResult($contacts_stmt)) {
687 while($contact = DBA::fetch($contacts_stmt)) {
688 Contact::terminateFriendship($owner, $contact, true);
690 DBA::close($contacts_stmt);
692 $inboxes = ActivityPub\Transmitter::fetchTargetInboxesforUser(0);
693 foreach ($inboxes as $inbox => $receivers) {
694 Logger::info('Account removal via ActivityPub', ['uid' => $self_user_id, 'inbox' => $inbox]);
695 Worker::add(['priority' => PRIORITY_NEGLIGIBLE, 'created' => $created, 'dont_fork' => true],
696 'APDelivery', Delivery::REMOVAL, 0, $inbox, $self_user_id, $receivers);
704 * @param array $target_item
705 * @param array $parent
706 * @param array $thr_parent
707 * @param int $priority The priority the Notifier queue item was created with
708 * @param string $created The date the Notifier queue item was created on
709 * @return array 'count' => The number of delivery tasks created, 'contacts' => their contact ids
710 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
711 * @throws \ImagickException
713 private static function activityPubDelivery($cmd, array $target_item, array $parent, array $thr_parent, $priority, $created, $owner)
715 // Don't deliver via AP when the starting post isn't from a federated network
716 if (!in_array($parent['network'], Protocol::FEDERATED)) {
717 return ['count' => 0, 'contacts' => []];
720 // Don't deliver via AP when the starting post is delivered via Diaspora
721 if ($parent['network'] == Protocol::DIASPORA) {
722 return ['count' => 0, 'contacts' => []];
725 // Also don't deliver when the direct thread parent was delivered via Diaspora
726 if ($thr_parent['network'] == Protocol::DIASPORA) {
727 return ['count' => 0, 'contacts' => []];
730 // Posts from Diaspora contacts are transmitted via Diaspora
731 if ($target_item['network'] == Protocol::DIASPORA) {
732 return ['count' => 0, 'contacts' => []];
738 $uid = $target_item['contact-uid'] ?: $target_item['uid'];
740 if ($target_item['origin']) {
741 $inboxes = ActivityPub\Transmitter::fetchTargetInboxes($target_item, $uid);
743 if (in_array($target_item['private'], [Item::PUBLIC])) {
744 $inboxes = ActivityPub\Transmitter::addRelayServerInboxesForItem($target_item['id'], $inboxes);
745 $relay_inboxes = ActivityPub\Transmitter::addRelayServerInboxes();
748 Logger::log('Origin item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . ' will be distributed.', Logger::DEBUG);
749 } elseif (Item::isForumPost($target_item, $owner)) {
750 $inboxes = ActivityPub\Transmitter::fetchTargetInboxes($target_item, $uid, false, 0, true);
751 Logger::log('Forum item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . ' will be distributed.', Logger::DEBUG);
752 } elseif (!DBA::exists('conversation', ['item-uri' => $target_item['uri'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB])) {
753 Logger::log('Remote item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . ' is no AP post. It will not be distributed.', Logger::DEBUG);
754 return ['count' => 0, 'contacts' => []];
755 } elseif ($parent['origin']) {
756 // Remote items are transmitted via the personal inboxes.
757 // Doing so ensures that the dedicated receiver will get the message.
758 $inboxes = ActivityPub\Transmitter::fetchTargetInboxes($parent, $uid, true, $target_item['id']);
760 if (in_array($target_item['private'], [Item::PUBLIC])) {
761 $inboxes = ActivityPub\Transmitter::addRelayServerInboxesForItem($parent['id'], $inboxes);
762 $relay_inboxes = ActivityPub\Transmitter::addRelayServerInboxes([]);
765 Logger::log('Remote item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . ' will be distributed.', Logger::DEBUG);
768 if (empty($inboxes) && empty($relay_inboxes)) {
769 Logger::log('No inboxes found for item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . '. It will not be distributed.', Logger::DEBUG);
770 return ['count' => 0, 'contacts' => []];
773 // Fill the item cache
774 ActivityPub\Transmitter::createCachedActivityFromItem($target_item['id'], true);
776 $delivery_queue_count = 0;
779 foreach ($inboxes as $inbox => $receivers) {
780 $contacts = array_merge($contacts, $receivers);
782 if ((count($receivers) == 1) && Network::isLocalLink($inbox)) {
783 $contact = Contact::getById($receivers[0], ['url']);
784 if ($target_uid = User::getIdForURL($contact['url'])) {
785 $fields = ['protocol' => Conversation::PARCEL_LOCAL_DFRN, 'direction' => Conversation::PUSH, 'post-reason' => Item::PR_BCC];
786 Item::storeForUserByUriId($target_item['uri-id'], $target_uid, $fields, $target_item['uid']);
787 Logger::info('Delivered locally', ['cmd' => $cmd, 'id' => $target_item['id'], 'inbox' => $inbox]);
792 Logger::info('Delivery via ActivityPub', ['cmd' => $cmd, 'id' => $target_item['id'], 'inbox' => $inbox]);
794 if (Worker::add(['priority' => $priority, 'created' => $created, 'dont_fork' => true],
795 'APDelivery', $cmd, $target_item['id'], $inbox, $uid, $receivers, $target_item['uri-id'])) {
796 $delivery_queue_count++;
800 // We deliver posts to relay servers slightly delayed to priorize the direct delivery
801 foreach ($relay_inboxes as $inbox) {
802 Logger::info('Delivery to relay servers via ActivityPub', ['cmd' => $cmd, 'id' => $target_item['id'], 'inbox' => $inbox]);
804 if (Worker::add(['priority' => $priority, 'dont_fork' => true], 'APDelivery', $cmd, $target_item['id'], $inbox, $uid, [], $target_item['uri-id'])) {
805 $delivery_queue_count++;
809 return ['count' => $delivery_queue_count, 'contacts' => $contacts];
813 * Check if the delivered item is a forum post
818 public static function isForumPost(array $item)
820 return ($item['gravity'] == GRAVITY_PARENT) && !empty($item['forum_mode']);