3 * @copyright Copyright (C) 2020, Friendica
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\APContact;
31 use Friendica\Model\Contact;
32 use Friendica\Model\Conversation;
33 use Friendica\Model\Group;
34 use Friendica\Model\Item;
35 use Friendica\Model\Post;
36 use Friendica\Model\PushSubscriber;
37 use Friendica\Model\Tag;
38 use Friendica\Model\User;
39 use Friendica\Protocol\Activity;
40 use Friendica\Protocol\ActivityPub;
41 use Friendica\Protocol\Diaspora;
42 use Friendica\Protocol\OStatus;
43 use Friendica\Protocol\Salmon;
46 * The notifier is typically called with:
48 * Worker::add(PRIORITY_HIGH, "Notifier", COMMAND, ITEM_ID);
50 * where COMMAND is one of the constants that are defined in Worker/Delivery.php
51 * and ITEM_ID is the id of the item in the database that needs to be sent to others.
56 public static function execute($cmd, $target_id)
60 Logger::info('Invoked', ['cmd' => $cmd, 'target' => $target_id]);
66 $delivery_contacts_stmt = null;
71 $delivery_queue_count = 0;
73 if ($cmd == Delivery::MAIL) {
74 $message = DBA::selectFirst('mail', ['uid', 'contact-id'], ['id' => $target_id]);
75 if (!DBA::isResult($message)) {
78 $uid = $message['uid'];
79 $recipients[] = $message['contact-id'];
81 $mail = ActivityPub\Transmitter::ItemArrayFromMail($target_id);
82 $inboxes = ActivityPub\Transmitter::fetchTargetInboxes($mail, $uid, true);
83 foreach ($inboxes as $inbox) {
84 Logger::info('Delivery via ActivityPub', ['cmd' => $cmd, 'target' => $target_id, 'inbox' => $inbox]);
85 Worker::add(['priority' => PRIORITY_HIGH, 'created' => $a->queue['created'], 'dont_fork' => true],
86 'APDelivery', $cmd, $target_id, $inbox, $uid);
88 } elseif ($cmd == Delivery::SUGGESTION) {
89 $suggest = DI::fsuggest()->getById($target_id);
91 $recipients[] = $suggest->cid;
92 } elseif ($cmd == Delivery::REMOVAL) {
93 return self::notifySelfRemoval($target_id, $a->queue['priority'], $a->queue['created']);
94 } elseif ($cmd == Delivery::RELOCATION) {
97 $condition = ['uid' => $target_id, 'self' => false, 'network' => [Protocol::DFRN, Protocol::DIASPORA]];
98 $delivery_contacts_stmt = DBA::select('contact', ['id', 'url', 'addr', 'network', 'protocol', 'batch'], $condition);
101 $condition = ['id' => $target_id, 'visible' => true, 'moderated' => false];
102 $target_item = Item::selectFirst([], $condition);
104 if (!DBA::isResult($target_item) || !intval($target_item['parent'])) {
105 Logger::info('No target item', ['cmd' => $cmd, 'target' => $target_id]);
109 if (!empty($target_item['contact-uid'])) {
110 $uid = $target_item['contact-uid'];
111 } elseif (!empty($target_item['uid'])) {
112 $uid = $target_item['uid'];
114 Logger::info('Only public users, quitting', ['target' => $target_id]);
118 $condition = ['parent' => $target_item['parent'], 'visible' => true, 'moderated' => false];
119 $params = ['order' => ['id']];
120 $items_stmt = Item::select([], $condition, $params);
121 if (!DBA::isResult($items_stmt)) {
122 Logger::info('No item found', ['cmd' => $cmd, 'target' => $target_id]);
126 $items = Item::inArray($items_stmt);
128 // avoid race condition with deleting entries
129 if ($items[0]['deleted']) {
130 foreach ($items as $item) {
131 $item['deleted'] = 1;
135 if ((count($items) == 1) && ($items[0]['id'] === $target_item['id']) && ($items[0]['uri'] === $items[0]['parent-uri'])) {
136 Logger::info('Top level post', ['target' => $target_id]);
141 $owner = User::getOwnerDataById($uid);
143 Logger::info('Owner not found', ['cmd' => $cmd, 'target' => $target_id]);
147 // Should the post be transmitted to Diaspora?
148 $diaspora_delivery = true;
150 // If this is a public conversation, notify the feed hub
151 $public_message = true;
156 $push_notify = false;
158 // Deliver directly to a forum, don't PuSH
159 $direct_forum_delivery = false;
162 $recipients_followup = [];
164 if (!empty($target_item) && !empty($items)) {
167 $fields = ['network', 'author-id', 'author-link', 'author-network', 'owner-id'];
168 $condition = ['uri' => $target_item["thr-parent"], 'uid' => $target_item["uid"]];
169 $thr_parent = Item::selectFirst($fields, $condition);
170 if (empty($thr_parent)) {
171 $thr_parent = $parent;
174 Logger::log('GUID: ' . $target_item["guid"] . ': Parent is ' . $parent['network'] . '. Thread parent is ' . $thr_parent['network'], Logger::DEBUG);
176 if (!self::isRemovalActivity($cmd, $owner, Protocol::ACTIVITYPUB)) {
177 $delivery_queue_count += self::activityPubDelivery($cmd, $target_item, $parent, $thr_parent, $a->queue['priority'], $a->queue['created'], $owner);
180 // Only deliver threaded replies (comment to a comment) to Diaspora
181 // when the original comment author does support the Diaspora protocol.
182 if ($thr_parent['author-link'] && $target_item['parent-uri'] != $target_item['thr-parent']) {
183 $diaspora_delivery = Diaspora::isSupportedByContactUrl($thr_parent['author-link']);
184 Logger::info('Threaded comment', ['diaspora_delivery' => (int)$diaspora_delivery]);
187 $unlisted = $target_item['private'] == Item::UNLISTED;
189 // This is IMPORTANT!!!!
191 // We will only send a "notify owner to relay" or followup message if the referenced post
192 // originated on our system by virtue of having our hostname somewhere
193 // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
195 // if $parent['wall'] == 1 we will already have the parent message in our array
196 // and we will relay the whole lot.
198 $localhost = str_replace('www.','', DI::baseUrl()->getHostname());
199 if (strpos($localhost,':')) {
200 $localhost = substr($localhost,0,strpos($localhost,':'));
204 * Be VERY CAREFUL if you make any changes to the following several lines. Seemingly innocuous changes
205 * have been known to cause runaway conditions which affected several servers, along with
206 * permissions issues.
210 $relay_to_owner = false;
212 if (!$top_level && ($parent['wall'] == 0) && (stristr($target_item['uri'],$localhost))) {
213 $relay_to_owner = true;
216 if (($cmd === Delivery::UPLINK) && (intval($parent['forum_mode']) == 1) && !$top_level) {
217 $relay_to_owner = true;
220 // until the 'origin' flag has been in use for several months
221 // we will just use it as a fallback test
222 // later we will be able to use it as the primary test of whether or not to relay.
224 if (!$target_item['origin']) {
225 $relay_to_owner = false;
227 if ($parent['origin']) {
228 $relay_to_owner = false;
231 // Special treatment for forum posts
232 if (Item::isForumPost($target_item, $owner)) {
233 $relay_to_owner = true;
234 $direct_forum_delivery = true;
237 // Avoid that comments in a forum thread are sent to OStatus
238 if (Item::isForumPost($parent, $owner)) {
239 $direct_forum_delivery = true;
242 if ($relay_to_owner) {
243 // local followup to remote post
245 $public_message = false; // not public
246 $recipients = [$parent['contact-id']];
247 $recipients_followup = [$parent['contact-id']];
249 Logger::info('Followup', ['target' => $target_id, 'guid' => $target_item['guid'], 'to' => $parent['contact-id']]);
251 if (($target_item['private'] != Item::PRIVATE) &&
252 (strlen($target_item['allow_cid'].$target_item['allow_gid'].
253 $target_item['deny_cid'].$target_item['deny_gid']) == 0))
256 if (($thr_parent && ($thr_parent['network'] == Protocol::OSTATUS)) || ($parent['network'] == Protocol::OSTATUS)) {
259 if ($parent["network"] == Protocol::OSTATUS) {
260 // Distribute the message to the DFRN contacts as if this wasn't a followup since OStatus can't relay comments
261 // Currently it is work at progress
262 $condition = ['uid' => $uid, 'network' => Protocol::DFRN, 'blocked' => false, 'pending' => false, 'archive' => false];
263 $followup_contacts_stmt = DBA::select('contact', ['id'], $condition);
264 while($followup_contact = DBA::fetch($followup_contacts_stmt)) {
265 $recipients_followup[] = $followup_contact['id'];
267 DBA::close($followup_contacts_stmt);
271 if ($direct_forum_delivery) {
272 $push_notify = false;
275 Logger::log('Notify ' . $target_item["guid"] .' via PuSH: ' . ($push_notify ? "Yes":"No"), Logger::DEBUG);
279 Logger::info('Distributing directly', ['target' => $target_id, 'guid' => $target_item['guid']]);
281 // don't send deletions onward for other people's stuff
283 if ($target_item['deleted'] && !intval($target_item['wall'])) {
284 Logger::log('Ignoring delete notification for non-wall item');
288 if (strlen($parent['allow_cid'])
289 || strlen($parent['allow_gid'])
290 || strlen($parent['deny_cid'])
291 || strlen($parent['deny_gid'])) {
292 $public_message = false; // private recipients, not public
295 $aclFormatter = DI::aclFormatter();
297 $allow_people = $aclFormatter->expand($parent['allow_cid']);
298 $allow_groups = Group::expand($uid, $aclFormatter->expand($parent['allow_gid']),true);
299 $deny_people = $aclFormatter->expand($parent['deny_cid']);
300 $deny_groups = Group::expand($uid, $aclFormatter->expand($parent['deny_gid']));
302 // if our parent is a public forum (forum_mode == 1), uplink to the origional author causing
303 // a delivery fork. private groups (forum_mode == 2) do not uplink
304 /// @todo Possibly we should not uplink when the author is the forum itself?
306 if ((intval($parent['forum_mode']) == 1) && !$top_level && ($cmd !== Delivery::UPLINK)
307 && ($target_item['verb'] != Activity::ANNOUNCE)) {
308 Worker::add($a->queue['priority'], 'Notifier', Delivery::UPLINK, $target_id);
311 foreach ($items as $item) {
312 $recipients[] = $item['contact-id'];
313 // pull out additional tagged people to notify (if public message)
314 if ($public_message && strlen($item['inform'])) {
315 $people = explode(',',$item['inform']);
316 foreach ($people as $person) {
317 if (substr($person,0,4) === 'cid:') {
318 $recipients[] = intval(substr($person,4));
320 $url_recipients[] = substr($person,4);
326 if (count($url_recipients)) {
327 Logger::notice('Deliver', ['target' => $target_id, 'guid' => $target_item['guid'], 'recipients' => $url_recipients]);
330 $recipients = array_unique(array_merge($recipients, $allow_people, $allow_groups));
331 $deny = array_unique(array_merge($deny_people, $deny_groups));
332 $recipients = array_diff($recipients, $deny);
334 // If this is a public message and pubmail is set on the parent, include all your email contacts
336 function_exists('imap_open')
337 && !DI::config()->get('system','imap_disabled')
339 && intval($target_item['pubmail'])
341 $mail_contacts_stmt = DBA::select('contact', ['id'], ['uid' => $uid, 'network' => Protocol::MAIL]);
342 while ($mail_contact = DBA::fetch($mail_contacts_stmt)) {
343 $recipients[] = $mail_contact['id'];
345 DBA::close($mail_contacts_stmt);
349 // If the thread parent is OStatus then do some magic to distribute the messages.
350 // We have not only to look at the parent, since it could be a Friendica thread.
351 if (($thr_parent && ($thr_parent['network'] == Protocol::OSTATUS)) || ($parent['network'] == Protocol::OSTATUS)) {
352 $diaspora_delivery = false;
354 Logger::log('Some parent is OStatus for '.$target_item["guid"]." - Author: ".$thr_parent['author-id']." - Owner: ".$thr_parent['owner-id'], Logger::DEBUG);
356 // Send a salmon to the parent author
357 $probed_contact = DBA::selectFirst('contact', ['url', 'notify'], ['id' => $thr_parent['author-id']]);
358 if (DBA::isResult($probed_contact) && !empty($probed_contact["notify"])) {
359 Logger::notice('Notify parent author', ['url' => $probed_contact["url"], 'notify' => $probed_contact["notify"]]);
360 $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
363 // Send a salmon to the parent owner
364 $probed_contact = DBA::selectFirst('contact', ['url', 'notify'], ['id' => $thr_parent['owner-id']]);
365 if (DBA::isResult($probed_contact) && !empty($probed_contact["notify"])) {
366 Logger::notice('Notify parent owner', ['url' => $probed_contact["url"], 'notify' => $probed_contact["notify"]]);
367 $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
370 // Send a salmon notification to every person we mentioned in the post
371 foreach (Tag::getByURIId($target_item['uri-id'], [Tag::MENTION, Tag::EXCLUSIVE_MENTION, Tag::IMPLICIT_MENTION]) as $tag) {
372 $probed_contact = Contact::getByURL($tag['url']);
373 if (!empty($probed_contact['notify'])) {
374 Logger::notice('Notify mentioned user', ['url' => $probed_contact["url"], 'notify' => $probed_contact["notify"]]);
375 $url_recipients[$probed_contact['notify']] = $probed_contact['notify'];
379 // It only makes sense to distribute answers to OStatus messages to Friendica and OStatus - but not Diaspora
380 $networks = [Protocol::DFRN];
381 } elseif ($diaspora_delivery) {
382 $networks = [Protocol::DFRN, Protocol::DIASPORA, Protocol::MAIL];
383 if (($parent['network'] == Protocol::DIASPORA) || ($thr_parent['network'] == Protocol::DIASPORA)) {
384 Logger::info('Add AP contacts', ['target' => $target_id, 'guid' => $target_item['guid']]);
385 $networks[] = Protocol::ACTIVITYPUB;
388 $networks = [Protocol::DFRN, Protocol::MAIL];
391 $public_message = false;
394 if (empty($delivery_contacts_stmt)) {
396 $recipients = $recipients_followup;
398 $condition = ['id' => $recipients, 'self' => false, 'uid' => [0, $uid],
399 'blocked' => false, 'pending' => false, 'archive' => false];
400 if (!empty($networks)) {
401 $condition['network'] = $networks;
403 $delivery_contacts_stmt = DBA::select('contact', ['id', 'addr', 'url', 'network', 'protocol', 'batch'], $condition);
407 $batch_delivery = false;
409 if ($public_message && !in_array($cmd, [Delivery::MAIL, Delivery::SUGGESTION]) && !$followup) {
412 if ($diaspora_delivery && !$unlisted) {
413 $batch_delivery = true;
415 $relay_list_stmt = DBA::p(
418 ANY_VALUE(`id`) AS `id`,
419 ANY_VALUE(`url`) AS `url`,
420 ANY_VALUE(`name`) AS `name`,
421 ANY_VALUE(`network`) AS `network`,
422 ANY_VALUE(`protocol`) AS `protocol`
436 $relay_list = DBA::toArray($relay_list_stmt);
438 // Fetch the participation list
439 // The function will ensure that there are no duplicates
440 $relay_list = Diaspora::participantsForThread($target_item, $relay_list);
442 // Add the relay to the list, avoid duplicates.
443 // Don't send community posts to the relay. Forum posts via the Diaspora protocol are looking ugly.
444 if (!$followup && !Item::isForumPost($target_item, $owner) && !self::isForumPost($target_item)) {
445 $relay_list = Diaspora::relayList($target_id, $relay_list);
449 $condition = ['network' => Protocol::DFRN, 'uid' => $owner['uid'], 'blocked' => false,
450 'pending' => false, 'archive' => false, 'rel' => [Contact::FOLLOWER, Contact::FRIEND]];
452 $r2 = DBA::toArray(DBA::select('contact', ['id', 'url', 'addr', 'name', 'network', 'protocol'], $condition));
454 $r = array_merge($r2, $relay_list);
456 if (DBA::isResult($r)) {
457 foreach ($r as $rr) {
458 // Ensure that local contacts are delivered via DFRN
459 if (Contact::isLocal($rr['url'])) {
460 $contact['network'] = Protocol::DFRN;
463 if (!empty($rr['addr']) && ($rr['network'] == Protocol::ACTIVITYPUB) && !DBA::exists('fcontact', ['addr' => $rr['addr']])) {
464 Logger::info('Contact is AP omly, so skip delivery via legacy DFRN/Diaspora', ['target' => $target_id, 'contact' => $rr['url']]);
468 if (!empty($rr['id']) && Contact::isArchived($rr['id'])) {
469 Logger::info('Contact is archived, so skip delivery', ['target' => $target_id, 'contact' => $rr['url']]);
473 if (self::isRemovalActivity($cmd, $owner, $rr['network'])) {
474 Logger::info('Contact does no supports account removal commands, so skip delivery', ['target' => $target_id, 'contact' => $rr['url']]);
478 if (self::skipDFRN($rr, $target_item, $parent, $thr_parent, $owner, $cmd)) {
479 Logger::info('Contact can be delivered via AP, so skip delivery via legacy DFRN/Diaspora', ['id' => $target_id, 'url' => $rr['url']]);
483 if (self::skipActivityPubForDiaspora($rr, $target_item, $thr_parent)) {
484 Logger::info('Contact is from Diaspora, but the replied author is from ActivityPub, so skip delivery via Diaspora', ['id' => $target_id, 'url' => $rr['url']]);
488 $conversants[] = $rr['id'];
490 Logger::info('Public delivery', ['target' => $target_id, 'guid' => $target_item["guid"], 'to' => $rr]);
492 // Ensure that posts with our own protocol arrives before Diaspora posts arrive.
493 // Situation is that sometimes Friendica servers receive Friendica posts over the Diaspora protocol first.
494 // The conversion in Markdown reduces the formatting, so these posts should arrive after the Friendica posts.
495 // This is only important for high and medium priority tasks and not for Low priority jobs like deletions.
496 if (($rr['network'] == Protocol::DIASPORA) && in_array($a->queue['priority'], [PRIORITY_HIGH, PRIORITY_MEDIUM])) {
497 $deliver_options = ['priority' => $a->queue['priority'], 'dont_fork' => true];
499 $deliver_options = ['priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true];
502 if (Worker::add($deliver_options, 'Delivery', $cmd, $target_id, (int)$rr['id'])) {
503 $delivery_queue_count++;
512 while ($contact = DBA::fetch($delivery_contacts_stmt)) {
513 // Ensure that local contacts are delivered via DFRN
514 if (Contact::isLocal($contact['url'])) {
515 $contact['network'] = Protocol::DFRN;
518 if (!empty($contact['addr']) && ($contact['network'] == Protocol::ACTIVITYPUB) && !DBA::exists('fcontact', ['addr' => $contact['addr']])) {
519 Logger::info('Contact is AP omly, so skip delivery via legacy DFRN/Diaspora', ['target' => $target_id, 'contact' => $contact['url']]);
523 if (!empty($contact['id']) && Contact::isArchived($contact['id'])) {
524 Logger::info('Contact is archived, so skip delivery', ['target' => $target_id, 'contact' => $contact['url']]);
528 if (self::isRemovalActivity($cmd, $owner, $contact['network'])) {
529 Logger::info('Contact does no supports account removal commands, so skip delivery', ['target' => $target_id, 'contact' => $contact['url']]);
533 if (self::skipDFRN($contact, $target_item, $parent, $thr_parent, $owner, $cmd)) {
534 Logger::info('Contact can be delivered via AP, so skip delivery via legacy DFRN/Diaspora', ['target' => $target_id, 'url' => $contact['url']]);
538 if (self::skipActivityPubForDiaspora($contact, $target_item, $thr_parent)) {
539 Logger::info('Contact is from Diaspora, but the replied author is from ActivityPub, so skip delivery via Diaspora', ['id' => $target_id, 'url' => $contact['url']]);
543 // Don't deliver to Diaspora if it already had been done as batch delivery
544 if (($contact['network'] == Protocol::DIASPORA) && $batch_delivery) {
545 Logger::log('Already delivered id ' . $target_id . ' via batch to ' . json_encode($contact), Logger::DEBUG);
549 // Don't deliver to folks who have already been delivered to
550 if (in_array($contact['id'], $conversants)) {
551 Logger::log('Already delivered id ' . $target_id. ' to ' . json_encode($contact), Logger::DEBUG);
555 Logger::info('Delivery', ['id' => $target_id, 'to' => $contact]);
557 // Ensure that posts with our own protocol arrives before Diaspora posts arrive.
558 // Situation is that sometimes Friendica servers receive Friendica posts over the Diaspora protocol first.
559 // The conversion in Markdown reduces the formatting, so these posts should arrive after the Friendica posts.
560 if ($contact['network'] == Protocol::DIASPORA) {
561 $deliver_options = ['priority' => $a->queue['priority'], 'dont_fork' => true];
563 $deliver_options = ['priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true];
566 if (Worker::add($deliver_options, 'Delivery', $cmd, $target_id, (int)$contact['id'])) {
567 $delivery_queue_count++;
570 DBA::close($delivery_contacts_stmt);
572 $url_recipients = array_filter($url_recipients);
573 // send salmon slaps to mentioned remote tags (@foo@example.com) in OStatus posts
574 // They are especially used for notifications to OStatus users that don't follow us.
575 if (!DI::config()->get('system', 'dfrn_only') && count($url_recipients) && ($public_message || $push_notify) && !empty($target_item)) {
576 $slap = OStatus::salmon($target_item, $owner);
577 foreach ($url_recipients as $url) {
578 Logger::log('Salmon delivery of item ' . $target_id . ' to ' . $url);
579 /// @TODO Redeliver/queue these items on failure, though there is no contact record
580 $delivery_queue_count++;
581 Salmon::slapper($owner, $url, $slap);
582 Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Post\DeliveryData::OSTATUS);
586 // Notify PuSH subscribers (Used for OStatus distribution of regular posts)
588 Logger::log('Activating internal PuSH for item '.$target_id, Logger::DEBUG);
590 // Handling the pubsubhubbub requests
591 PushSubscriber::publishFeed($owner['uid'], $a->queue['priority']);
594 if (!empty($target_item)) {
595 Logger::log('Calling hooks for ' . $cmd . ' ' . $target_id, Logger::DEBUG);
597 Hook::fork($a->queue['priority'], 'notifier_normal', $target_item);
599 Hook::callAll('notifier_end', $target_item);
601 // Workaround for pure connector posts
602 if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
603 if ($delivery_queue_count == 0) {
604 Post\DeliveryData::incrementQueueDone($target_item['uri-id']);
605 $delivery_queue_count = 1;
608 Post\DeliveryData::incrementQueueCount($target_item['uri-id'], $delivery_queue_count);
616 * Checks if the current delivery shouldn't be transported to Diaspora.
617 * This is done for posts from AP authors or posts that are comments to AP authors.
619 * @param array $contact Receiver of the post
620 * @param array $item The post
621 * @param array $thr_parent The thread parent
624 private static function skipActivityPubForDiaspora(array $contact, array $item, array $thr_parent)
626 // No skipping needs to be done when delivery isn't done to Diaspora
627 if ($contact['network'] != Protocol::DIASPORA) {
631 // Skip the delivery to Diaspora if the item is from an ActivityPub author
632 if ($item['author-network'] == Protocol::ACTIVITYPUB) {
636 // Skip the delivery to Diaspora if the thread parent is from an ActivityPub author
637 if ($thr_parent['author-network'] == Protocol::ACTIVITYPUB) {
645 * Checks if the current delivery process needs to be transported via DFRN.
647 * @param array $contact Receiver of the post
648 * @param array $item The post
649 * @param array $parent The parent
650 * @param array $thr_parent The thread parent
651 * @param array $owner Owner array
652 * @param string $cmd Notifier command
654 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
655 * @throws \ImagickException
657 private static function skipDFRN($contact, $item, $parent, $thr_parent, $owner, $cmd)
659 if (empty($parent['network'])) {
663 // Don't skip when the starting post is delivered via Diaspora
664 if ($parent['network'] == Protocol::DIASPORA) {
668 // Also don't skip when the direct thread parent was delivered via Diaspora
669 if ($thr_parent['network'] == Protocol::DIASPORA) {
673 // Use DFRN if we are on the same site
674 if (!empty($contact['url']) && Contact::isLocal($contact['url'])) {
678 // Don't skip when author or owner don't have AP profiles
679 if ((!empty($item['author-link']) && empty(APContact::getByURL($item['author-link'], false))) || (!empty($item['owner-link']) && empty(APContact::getByURL($item['owner-link'], false)))) {
683 // Don't skip DFRN delivery for these commands
684 if (in_array($cmd, [Delivery::SUGGESTION, Delivery::REMOVAL, Delivery::RELOCATION, Delivery::POKE])) {
688 // We deliver reshares via AP whenever possible
689 if (ActivityPub\Transmitter::isAnnounce($item)) {
693 // For the time being we always deliver forum post via DFRN if possible
694 // This can be removed possible at the end of 2020 when hopefully most system can process AP forum posts
695 if ($owner['account-type'] == User::ACCOUNT_TYPE_COMMUNITY) {
699 // Skip DFRN when the item will be (forcefully) delivered via AP
700 if (DI::config()->get('debug', 'total_ap_delivery') && ($contact['network'] == Protocol::DFRN) && !empty(APContact::getByURL($contact['url'], false))) {
704 // Skip DFRN delivery if the contact speaks ActivityPub
705 return in_array($contact['network'], [Protocol::DFRN, Protocol::DIASPORA]) && ($contact['protocol'] == Protocol::ACTIVITYPUB);
709 * Checks if the current action is a deletion command of a account removal activity
710 * For Diaspora and ActivityPub we don't need to send single item deletion calls.
711 * These protocols do have a dedicated command for deleting a whole account.
713 * @param string $cmd Notifier command
714 * @param array $owner Sender of the post
715 * @param string $network Receiver network
717 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
718 * @throws \ImagickException
720 private static function isRemovalActivity($cmd, $owner, $network)
722 return ($cmd == Delivery::DELETION) && $owner['account_removed'] && in_array($network, [Protocol::ACTIVITYPUB, Protocol::DIASPORA]);
726 * @param int $self_user_id
727 * @param int $priority The priority the Notifier queue item was created with
728 * @param string $created The date the Notifier queue item was created on
730 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
731 * @throws \ImagickException
733 private static function notifySelfRemoval($self_user_id, $priority, $created)
735 $owner = User::getOwnerDataById($self_user_id);
740 $contacts_stmt = DBA::select('contact', [], ['self' => false, 'uid' => $self_user_id]);
741 if (!DBA::isResult($contacts_stmt)) {
745 while($contact = DBA::fetch($contacts_stmt)) {
746 Contact::terminateFriendship($owner, $contact, true);
748 DBA::close($contacts_stmt);
750 $inboxes = ActivityPub\Transmitter::fetchTargetInboxesforUser(0);
751 foreach ($inboxes as $inbox) {
752 Logger::info('Account removal via ActivityPub', ['uid' => $self_user_id, 'inbox' => $inbox]);
753 Worker::add(['priority' => PRIORITY_NEGLIGIBLE, 'created' => $created, 'dont_fork' => true],
754 'APDelivery', Delivery::REMOVAL, '', $inbox, $self_user_id);
762 * @param array $target_item
763 * @param array $parent
764 * @param array $thr_parent
765 * @param int $priority The priority the Notifier queue item was created with
766 * @param string $created The date the Notifier queue item was created on
767 * @return int The number of delivery tasks created
768 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
769 * @throws \ImagickException
771 private static function activityPubDelivery($cmd, array $target_item, array $parent, array $thr_parent, $priority, $created, $owner)
773 // Don't deliver via AP when the starting post is delivered via Diaspora
774 if ($parent['network'] == Protocol::DIASPORA) {
778 // Also don't deliver when the direct thread parent was delivered via Diaspora
779 if ($thr_parent['network'] == Protocol::DIASPORA) {
786 $uid = $target_item['contact-uid'] ?: $target_item['uid'];
788 if ($target_item['origin']) {
789 $inboxes = ActivityPub\Transmitter::fetchTargetInboxes($target_item, $uid);
791 if (in_array($target_item['private'], [Item::PUBLIC])) {
792 $relay_inboxes = ActivityPub\Transmitter::addRelayServerInboxes([]);
795 Logger::log('Origin item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . ' will be distributed.', Logger::DEBUG);
796 } elseif (Item::isForumPost($target_item, $owner)) {
797 $inboxes = ActivityPub\Transmitter::fetchTargetInboxes($target_item, $uid, false, 0, true);
798 Logger::log('Forum item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . ' will be distributed.', Logger::DEBUG);
799 } elseif (!DBA::exists('conversation', ['item-uri' => $target_item['uri'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB])) {
800 Logger::log('Remote item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . ' is no AP post. It will not be distributed.', Logger::DEBUG);
802 } elseif ($parent['origin']) {
803 // Remote items are transmitted via the personal inboxes.
804 // Doing so ensures that the dedicated receiver will get the message.
805 $inboxes = ActivityPub\Transmitter::fetchTargetInboxes($parent, $uid, true, $target_item['id']);
807 if (in_array($target_item['private'], [Item::PUBLIC])) {
808 $relay_inboxes = ActivityPub\Transmitter::addRelayServerInboxes([]);
811 Logger::log('Remote item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . ' will be distributed.', Logger::DEBUG);
814 if (empty($inboxes) && empty($relay_inboxes)) {
815 Logger::log('No inboxes found for item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . '. It will not be distributed.', Logger::DEBUG);
819 // Fill the item cache
820 ActivityPub\Transmitter::createCachedActivityFromItem($target_item['id'], true);
822 $delivery_queue_count = 0;
824 foreach ($inboxes as $inbox) {
825 Logger::info('Delivery via ActivityPub', ['cmd' => $cmd, 'id' => $target_item['id'], 'inbox' => $inbox]);
827 if (Worker::add(['priority' => $priority, 'created' => $created, 'dont_fork' => true],
828 'APDelivery', $cmd, $target_item['id'], $inbox, $uid)) {
829 $delivery_queue_count++;
833 // We deliver posts to relay servers slightly delayed to priorize the direct delivery
834 foreach ($relay_inboxes as $inbox) {
835 Logger::info('Delivery to relay servers via ActivityPub', ['cmd' => $cmd, 'id' => $target_item['id'], 'inbox' => $inbox]);
837 if (Worker::add(['priority' => $priority, 'dont_fork' => true], 'APDelivery', $cmd, $target_item['id'], $inbox, $uid)) {
838 $delivery_queue_count++;
842 return $delivery_queue_count;
846 * Check if the delivered item is a forum post
851 public static function isForumPost(array $item)
853 return !empty($item['forum_mode']);