3 * @file src/Worker/Notifier.php
5 namespace Friendica\Worker;
7 use Friendica\BaseObject;
8 use Friendica\Core\Addon;
9 use Friendica\Core\Config;
10 use Friendica\Core\Protocol;
11 use Friendica\Core\Worker;
12 use Friendica\Database\DBA;
13 use Friendica\Model\Contact;
14 use Friendica\Model\Group;
15 use Friendica\Model\Item;
16 use Friendica\Model\PushSubscriber;
17 use Friendica\Model\User;
18 use Friendica\Network\Probe;
19 use Friendica\Protocol\ActivityPub;
20 use Friendica\Protocol\Diaspora;
21 use Friendica\Protocol\OStatus;
22 use Friendica\Protocol\Salmon;
24 require_once 'include/dba.php';
25 require_once 'include/items.php';
28 * The notifier is typically called with:
30 * Worker::add(PRIORITY_HIGH, "Notifier", COMMAND, ITEM_ID);
32 * where COMMAND is one of the following:
34 * activity (in diaspora.php, dfrn_confirm.php, profiles.php)
35 * comment-import (in diaspora.php, items.php)
36 * comment-new (in item.php)
37 * drop (in diaspora.php, items.php, photos.php)
38 * edit_post (in item.php)
39 * event (in events.php)
40 * like (in like.php, poke.php)
41 * mail (in message.php)
42 * suggest (in fsuggest.php)
43 * tag (in photos.php, poke.php, tagger.php)
44 * tgroup (in items.php)
45 * wall-new (in photos.php, item.php)
46 * removeme (in Contact.php)
47 * relocate (in uimport.php)
49 * and ITEM_ID is the id of the item in the database that needs to be sent to others.
54 public static function execute($cmd, $item_id)
56 $a = BaseObject::getApp();
58 logger('notifier: invoked: '.$cmd.': '.$item_id, LOGGER_DEBUG);
65 $recipients_relocate = [];
67 if ($cmd == Delivery::MAIL) {
69 $message = DBA::selectFirst('mail', ['uid', 'contact-id'], ['id' => $item_id]);
70 if (!DBA::isResult($message)) {
73 $uid = $message['uid'];
74 $recipients[] = $message['contact-id'];
75 } elseif ($cmd == Delivery::SUGGESTION) {
77 $suggest = DBA::selectFirst('fsuggest', ['uid', 'cid'], ['id' => $item_id]);
78 if (!DBA::isResult($suggest)) {
81 $uid = $suggest['uid'];
82 $recipients[] = $suggest['cid'];
83 } elseif ($cmd == Delivery::REMOVAL) {
84 $r = q("SELECT `contact`.*, `user`.`prvkey` AS `uprvkey`,
85 `user`.`timezone`, `user`.`nickname`, `user`.`sprvkey`, `user`.`spubkey`,
86 `user`.`page-flags`, `user`.`prvnets`, `user`.`account-type`, `user`.`guid`
87 FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
88 WHERE `contact`.`uid` = %d AND `contact`.`self` LIMIT 1",
95 $r = q("SELECT * FROM `contact` WHERE NOT `self` AND `uid` = %d", intval($item_id));
99 foreach ($r as $contact) {
100 Contact::terminateFriendship($user, $contact, true);
103 } elseif ($cmd == Delivery::RELOCATION) {
104 $normal_mode = false;
107 $recipients_relocate = q("SELECT * FROM `contact` WHERE `uid` = %d AND NOT `self` AND `network` IN ('%s', '%s')",
108 intval($uid), Protocol::DFRN, Protocol::DIASPORA);
111 $condition = ['id' => $item_id, 'visible' => true, 'moderated' => false];
112 $target_item = Item::selectFirst([], $condition);
114 if (!DBA::isResult($target_item) || !intval($target_item['parent'])) {
118 $parent_id = intval($target_item['parent']);
119 $uid = $target_item['contact-uid'];
120 $updated = $target_item['edited'];
122 $condition = ['parent' => $parent_id, 'visible' => true, 'moderated' => false];
123 $params = ['order' => ['id']];
124 $ret = Item::select([], $condition, $params);
126 if (!DBA::isResult($ret)) {
130 $items = Item::inArray($ret);
132 // avoid race condition with deleting entries
133 if ($items[0]['deleted']) {
134 foreach ($items as $item) {
135 $item['deleted'] = 1;
139 if ((count($items) == 1) && ($items[0]['id'] === $target_item['id']) && ($items[0]['uri'] === $items[0]['parent-uri'])) {
140 logger('notifier: top level post');
145 $owner = User::getOwnerDataById($uid);
150 $walltowall = ($top_level && ($owner['id'] != $items[0]['contact-id']) ? true : false);
152 // Should the post be transmitted to Diaspora?
153 $diaspora_delivery = true;
155 // If this is a public conversation, notify the feed hub
156 $public_message = true;
159 $push_notify = false;
161 // Deliver directly to a forum, don't PuSH
162 $direct_forum_delivery = false;
165 $recipients_followup = [];
168 if (!in_array($cmd, [Delivery::MAIL, Delivery::SUGGESTION, Delivery::RELOCATION])) {
171 $fields = ['network', 'author-id', 'owner-id'];
172 $condition = ['uri' => $target_item["thr-parent"], 'uid' => $target_item["uid"]];
173 $thr_parent = Item::selectFirst($fields, $condition);
175 logger('GUID: '.$target_item["guid"].': Parent is '.$parent['network'].'. Thread parent is '.$thr_parent['network'], LOGGER_DEBUG);
177 // This is IMPORTANT!!!!
179 // We will only send a "notify owner to relay" or followup message if the referenced post
180 // originated on our system by virtue of having our hostname somewhere
181 // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
183 // if $parent['wall'] == 1 we will already have the parent message in our array
184 // and we will relay the whole lot.
186 $localhost = str_replace('www.','',$a->get_hostname());
187 if (strpos($localhost,':')) {
188 $localhost = substr($localhost,0,strpos($localhost,':'));
192 * Be VERY CAREFUL if you make any changes to the following several lines. Seemingly innocuous changes
193 * have been known to cause runaway conditions which affected several servers, along with
194 * permissions issues.
198 $relay_to_owner = false;
200 if (!$top_level && ($parent['wall'] == 0) && (stristr($target_item['uri'],$localhost))) {
201 $relay_to_owner = true;
205 if (($cmd === 'uplink') && (intval($parent['forum_mode']) == 1) && !$top_level) {
206 $relay_to_owner = true;
209 // until the 'origin' flag has been in use for several months
210 // we will just use it as a fallback test
211 // later we will be able to use it as the primary test of whether or not to relay.
213 if (!$target_item['origin']) {
214 $relay_to_owner = false;
216 if ($parent['origin']) {
217 $relay_to_owner = false;
220 // Special treatment for forum posts
221 if (self::isForumPost($target_item, $owner)) {
222 $relay_to_owner = true;
223 $direct_forum_delivery = true;
226 // Avoid that comments in a forum thread are sent to OStatus
227 if (self::isForumPost($parent, $owner)) {
228 $direct_forum_delivery = true;
231 if ($relay_to_owner) {
232 // local followup to remote post
234 $public_message = false; // not public
235 $conversant_str = DBA::escape($parent['contact-id']);
236 $recipients = [$parent['contact-id']];
237 $recipients_followup = [$parent['contact-id']];
239 logger('notifier: followup '.$target_item["guid"].' to '.$conversant_str, LOGGER_DEBUG);
241 //if (!$target_item['private'] && $target_item['wall'] &&
242 if (!$target_item['private'] &&
243 (strlen($target_item['allow_cid'].$target_item['allow_gid'].
244 $target_item['deny_cid'].$target_item['deny_gid']) == 0))
247 if (($thr_parent && ($thr_parent['network'] == Protocol::OSTATUS)) || ($parent['network'] == Protocol::OSTATUS)) {
250 if ($parent["network"] == Protocol::OSTATUS) {
251 // Distribute the message to the DFRN contacts as if this wasn't a followup since OStatus can't relay comments
252 // Currently it is work at progress
253 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `network` = '%s' AND NOT `blocked` AND NOT `pending` AND NOT `archive`",
255 DBA::escape(Protocol::DFRN)
257 if (DBA::isResult($r)) {
258 foreach ($r as $rr) {
259 $recipients_followup[] = $rr['id'];
265 if ($direct_forum_delivery) {
266 $push_notify = false;
269 logger("Notify ".$target_item["guid"]." via PuSH: ".($push_notify?"Yes":"No"), LOGGER_DEBUG);
273 logger('Distributing directly '.$target_item["guid"], LOGGER_DEBUG);
275 // don't send deletions onward for other people's stuff
277 if ($target_item['deleted'] && !intval($target_item['wall'])) {
278 logger('notifier: ignoring delete notification for non-wall item');
282 if (strlen($parent['allow_cid'])
283 || strlen($parent['allow_gid'])
284 || strlen($parent['deny_cid'])
285 || strlen($parent['deny_gid'])) {
286 $public_message = false; // private recipients, not public
289 $allow_people = expand_acl($parent['allow_cid']);
290 $allow_groups = Group::expand(expand_acl($parent['allow_gid']),true);
291 $deny_people = expand_acl($parent['deny_cid']);
292 $deny_groups = Group::expand(expand_acl($parent['deny_gid']));
294 // if our parent is a public forum (forum_mode == 1), uplink to the origional author causing
295 // a delivery fork. private groups (forum_mode == 2) do not uplink
297 if ((intval($parent['forum_mode']) == 1) && !$top_level && ($cmd !== 'uplink')) {
298 Worker::add($a->queue['priority'], 'Notifier', 'uplink', $item_id);
301 foreach ($items as $item) {
302 $recipients[] = $item['contact-id'];
303 $conversants[] = $item['contact-id'];
304 // pull out additional tagged people to notify (if public message)
305 if ($public_message && strlen($item['inform'])) {
306 $people = explode(',',$item['inform']);
307 foreach ($people as $person) {
308 if (substr($person,0,4) === 'cid:') {
309 $recipients[] = intval(substr($person,4));
310 $conversants[] = intval(substr($person,4));
312 $url_recipients[] = substr($person,4);
318 if (count($url_recipients)) {
319 logger('notifier: '.$target_item["guid"].' url_recipients ' . print_r($url_recipients,true));
322 $conversants = array_unique($conversants);
324 $recipients = array_unique(array_merge($recipients,$allow_people,$allow_groups));
325 $deny = array_unique(array_merge($deny_people,$deny_groups));
326 $recipients = array_diff($recipients,$deny);
328 $conversant_str = DBA::escape(implode(', ',$conversants));
331 // If the thread parent is OStatus then do some magic to distribute the messages.
332 // We have not only to look at the parent, since it could be a Friendica thread.
333 if (($thr_parent && ($thr_parent['network'] == Protocol::OSTATUS)) || ($parent['network'] == Protocol::OSTATUS)) {
334 $diaspora_delivery = false;
336 logger('Some parent is OStatus for '.$target_item["guid"]." - Author: ".$thr_parent['author-id']." - Owner: ".$thr_parent['owner-id'], LOGGER_DEBUG);
338 // Send a salmon to the parent author
339 $probed_contact = DBA::selectFirst('contact', ['url', 'notify'], ['id' => $thr_parent['author-id']]);
340 if (DBA::isResult($probed_contact) && !empty($probed_contact["notify"])) {
341 logger('Notify parent author '.$probed_contact["url"].': '.$probed_contact["notify"]);
342 $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
345 // Send a salmon to the parent owner
346 $probed_contact = DBA::selectFirst('contact', ['url', 'notify'], ['id' => $thr_parent['owner-id']]);
347 if (DBA::isResult($probed_contact) && !empty($probed_contact["notify"])) {
348 logger('Notify parent owner '.$probed_contact["url"].': '.$probed_contact["notify"]);
349 $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
352 // Send a salmon notification to every person we mentioned in the post
353 $arr = explode(',',$target_item['tag']);
354 foreach ($arr as $x) {
355 //logger('Checking tag '.$x, LOGGER_DEBUG);
357 if (preg_match('/@\[url=([^\]]*)\]/',$x,$matches)) {
358 $probed_contact = Probe::uri($matches[1]);
359 if ($probed_contact["notify"] != "") {
360 logger('Notify mentioned user '.$probed_contact["url"].': '.$probed_contact["notify"]);
361 $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
366 // It only makes sense to distribute answers to OStatus messages to Friendica and OStatus - but not Diaspora
367 $networks = [Protocol::OSTATUS, Protocol::DFRN];
369 $networks = [Protocol::OSTATUS, Protocol::DFRN, Protocol::DIASPORA, Protocol::MAIL];
372 $public_message = false;
375 // If this is a public message and pubmail is set on the parent, include all your email contacts
376 if (!empty($target_item) && function_exists('imap_open') && !Config::get('system','imap_disabled')) {
377 if (!strlen($target_item['allow_cid']) && !strlen($target_item['allow_gid'])
378 && !strlen($target_item['deny_cid']) && !strlen($target_item['deny_gid'])
379 && intval($target_item['pubmail'])) {
380 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `network` = '%s'",
382 DBA::escape(Protocol::MAIL)
384 if (DBA::isResult($r)) {
385 foreach ($r as $rr) {
386 $recipients[] = $rr['id'];
392 if (($cmd == Delivery::RELOCATION)) {
393 $r = $recipients_relocate;
396 $recipients = $recipients_followup;
398 $condition = ['id' => $recipients, 'self' => false,
399 'blocked' => false, 'pending' => false, 'archive' => false];
400 if (!empty($networks)) {
401 $condition['network'] = $networks;
403 $contacts = DBA::select('contact', ['id', 'url', 'network'], $condition);
404 $r = DBA::toArray($contacts);
408 if (DBA::isResult($r)) {
409 foreach ($r as $contact) {
410 logger("Deliver ".$item_id." to ".$contact['url']." via network ".$contact['network'], LOGGER_DEBUG);
412 Worker::add(['priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true],
413 'Delivery', $cmd, $item_id, (int)$contact['id']);
419 if ($target_item['origin']) {
420 $inboxes = ActivityPub::fetchTargetInboxes($target_item, $uid);
423 if ($parent['origin']) {
424 $parent_inboxes = ActivityPub::fetchTargetInboxes($parent, $uid);
425 $inboxes = array_merge($inboxes, $parent_inboxes);
428 foreach ($inboxes as $inbox) {
429 logger('Deliver ' . $item_id .' to ' . $inbox .' via ActivityPub', LOGGER_DEBUG);
431 Worker::add(['priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true],
432 'APDelivery', $cmd, $item_id, $inbox, $uid);
435 // send salmon slaps to mentioned remote tags (@foo@example.com) in OStatus posts
436 // They are especially used for notifications to OStatus users that don't follow us.
437 if (!Config::get('system', 'dfrn_only') && count($url_recipients) && ($public_message || $push_notify) && $normal_mode) {
438 $slap = OStatus::salmon($target_item, $owner);
439 foreach ($url_recipients as $url) {
441 logger('notifier: urldelivery: ' . $url);
442 $deliver_status = Salmon::slapper($owner, $url, $slap);
443 /// @TODO Redeliver/queue these items on failure, though there is no contact record
448 if ($public_message) {
451 if ($diaspora_delivery) {
452 $r1 = q("SELECT `batch`, ANY_VALUE(`id`) AS `id`, ANY_VALUE(`name`) AS `name`, ANY_VALUE(`network`) AS `network`
453 FROM `contact` WHERE `network` = '%s' AND `batch` != ''
454 AND `uid` = %d AND `rel` != %d AND NOT `blocked` AND NOT `pending` AND NOT `archive` GROUP BY `batch`",
455 DBA::escape(Protocol::DIASPORA),
456 intval($owner['uid']),
457 intval(Contact::SHARING)
460 // Fetch the participation list
461 // The function will ensure that there are no duplicates
462 $r1 = Diaspora::participantsForThread($item_id, $r1);
464 // Add the relay to the list, avoid duplicates
466 $r1 = Diaspora::relayList($item_id, $r1);
470 $condition = ['network' => Protocol::DFRN, 'uid' => $owner['uid'], 'blocked' => false,
471 'pending' => false, 'archive' => false, 'rel' => [Contact::FOLLOWER, Contact::FRIEND]];
473 $r2 = DBA::toArray(DBA::select('contact', ['id', 'name', 'network'], $condition));
475 $r = array_merge($r2, $r1);
477 if (DBA::isResult($r)) {
478 logger('pubdeliver '.$target_item["guid"].': '.print_r($r,true), LOGGER_DEBUG);
480 foreach ($r as $rr) {
481 // except for Diaspora batch jobs
482 // Don't deliver to folks who have already been delivered to
484 if (($rr['network'] !== Protocol::DIASPORA) && (in_array($rr['id'], $conversants))) {
485 logger('notifier: already delivered id=' . $rr['id']);
489 if (!in_array($cmd, [Delivery::MAIL, Delivery::SUGGESTION]) && !$followup) {
490 logger('notifier: delivery agent: '.$rr['name'].' '.$rr['id'].' '.$rr['network'].' '.$target_item["guid"]);
491 Worker::add(['priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true],
492 'Delivery', $cmd, $item_id, (int)$rr['id']);
500 // Notify PuSH subscribers (Used for OStatus distribution of regular posts)
502 logger('Activating internal PuSH for item '.$item_id, LOGGER_DEBUG);
504 // Handling the pubsubhubbub requests
505 PushSubscriber::publishFeed($owner['uid'], $a->queue['priority']);
508 logger('notifier: calling hooks for ' . $cmd . ' ' . $item_id, LOGGER_DEBUG);
511 Addon::forkHooks($a->queue['priority'], 'notifier_normal', $target_item);
514 Addon::callHooks('notifier_end',$target_item);
519 private static function isForumPost($item, $owner) {
520 if (($item['author-id'] == $item['owner-id']) ||
521 ($owner['id'] == $item['contact-id']) ||
522 ($item['uri'] != $item['parent-uri'])) {
526 $fields = ['forum', 'prv'];
527 $condition = ['id' => $item['contact-id']];
528 $contact = DBA::selectFirst('contact', $fields, $condition);
529 if (!DBA::isResult($contact)) {
530 // Should never happen
534 // Is the post from a forum?
535 return ($contact['forum'] || $contact['prv']);