src/Worker/Notifier.php

   1 <?php
   2 /**
   3  * @file src/Worker/Notifier.php
   4  */
   5 namespace Friendica\Worker;
   6
   7 use Friendica\App;
   8 use Friendica\Core\Config;
   9 use Friendica\Core\Worker;
  10 use Friendica\Database\DBM;
  11 use Friendica\Network\Probe;
  12 use Friendica\Object\Contact;
  13 use Friendica\Protocol\Diaspora;
  14 use Friendica\Protocol\OStatus;
  15 use dba;
  16
  17 require_once 'include/queue_fn.php';
  18 require_once 'include/html2plain.php';
  19 require_once 'include/salmon.php';
  20 require_once 'include/datetime.php';
  21 require_once 'include/items.php';
  22 require_once 'include/bbcode.php';
  23 require_once 'include/email.php';
  24
  25 /*
  26  * This file was at one time responsible for doing all deliveries, but this caused
  27  * big problems when the process was killed or stalled during the delivery process.
  28  * It now invokes separate queues that are delivering via delivery.php and pubsubpublish.php.
  29  */
  30
  31 /*
  32  * The notifier is typically called with:
  33  *
  34  *              Worker::add(PRIORITY_HIGH, "Notifier", COMMAND, ITEM_ID);
  35  *
  36  * where COMMAND is one of the following:
  37  *
  38  *              activity                                (in diaspora.php, dfrn_confirm.php, profiles.php)
  39  *              comment-import                  (in diaspora.php, items.php)
  40  *              comment-new                             (in item.php)
  41  *              drop                                    (in diaspora.php, items.php, photos.php)
  42  *              edit_post                               (in item.php)
  43  *              event                                   (in events.php)
  44  *              expire                                  (in items.php)
  45  *              like                                    (in like.php, poke.php)
  46  *              mail                                    (in message.php)
  47  *              suggest                                 (in fsuggest.php)
  48  *              tag                                             (in photos.php, poke.php, tagger.php)
  49  *              tgroup                                  (in items.php)
  50  *              wall-new                                (in photos.php, item.php)
  51  *              removeme                                (in Contact.php)
  52  *              relocate                                (in uimport.php)
  53  *
  54  * and ITEM_ID is the id of the item in the database that needs to be sent to others.
  55  */
  56
  57 class Notifier {
  58         public static function execute($cmd, $item_id) {
  59                 global $a;
  60
  61                 logger('notifier: invoked: '.$cmd.': '.$item_id, LOGGER_DEBUG);
  62
  63                 $expire = false;
  64                 $mail = false;
  65                 $fsuggest = false;
  66                 $relocate = false;
  67                 $top_level = false;
  68                 $recipients = array();
  69                 $url_recipients = array();
  70
  71                 $normal_mode = true;
  72
  73                 if ($cmd === 'mail') {
  74                         $normal_mode = false;
  75                         $mail = true;
  76                         $message = q("SELECT * FROM `mail` WHERE `id` = %d LIMIT 1",
  77                                         intval($item_id)
  78                         );
  79                         if (! count($message)) {
  80                                 return;
  81                         }
  82                         $uid = $message[0]['uid'];
  83                         $recipients[] = $message[0]['contact-id'];
  84                         $item = $message[0];
  85
  86                 } elseif ($cmd === 'expire') {
  87                         $normal_mode = false;
  88                         $expire = true;
  89                         $items = q("SELECT * FROM `item` WHERE `uid` = %d AND `wall` = 1
  90                                 AND `deleted` = 1 AND `changed` > UTC_TIMESTAMP() - INTERVAL 10 MINUTE",
  91                                 intval($item_id)
  92                         );
  93                         $uid = $item_id;
  94                         $item_id = 0;
  95                         if (! count($items)) {
  96                                 return;
  97                         }
  98                 } elseif ($cmd === 'suggest') {
  99                         $normal_mode = false;
 100                         $fsuggest = true;
 101
 102                         $suggest = q("SELECT * FROM `fsuggest` WHERE `id` = %d LIMIT 1",
 103                                 intval($item_id)
 104                         );
 105                         if (! count($suggest)) {
 106                                 return;
 107                         }
 108                         $uid = $suggest[0]['uid'];
 109                         $recipients[] = $suggest[0]['cid'];
 110                         $item = $suggest[0];
 111                 } elseif ($cmd === 'removeme') {
 112                         $r = q("SELECT `contact`.*, `user`.`pubkey` AS `upubkey`, `user`.`prvkey` AS `uprvkey`,
 113                                         `user`.`timezone`, `user`.`nickname`, `user`.`sprvkey`, `user`.`spubkey`,
 114                                         `user`.`page-flags`, `user`.`prvnets`, `user`.`account-type`, `user`.`guid`
 115                                 FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
 116                                         WHERE `contact`.`uid` = %d AND `contact`.`self` LIMIT 1",
 117                                         intval($item_id));
 118                         if (!$r)
 119                                 return;
 120
 121                         $user = $r[0];
 122
 123                         $r = q("SELECT * FROM `contact` WHERE NOT `self` AND `uid` = %d", intval($item_id));
 124                         if (!$r) {
 125                                 return;
 126                         }
 127                         require_once 'include/Contact.php';
 128                         foreach ($r as $contact) {
 129                                 Contact::terminateFriendship($user, $contact);
 130                         }
 131                         return;
 132                 } elseif ($cmd === 'relocate') {
 133                         $normal_mode = false;
 134                         $relocate = true;
 135                         $uid = $item_id;
 136
 137                         $recipients_relocate = q("SELECT * FROM `contact` WHERE `uid` = %d AND NOT `self` AND `network` IN ('%s', '%s')",
 138                                                 intval($uid), NETWORK_DFRN, NETWORK_DIASPORA);
 139                 } else {
 140                         // find ancestors
 141                         $r = q("SELECT * FROM `item` WHERE `id` = %d AND visible = 1 AND moderated = 0 LIMIT 1",
 142                                 intval($item_id)
 143                         );
 144
 145                         if ((! DBM::is_result($r)) || (! intval($r[0]['parent']))) {
 146                                 return;
 147                         }
 148
 149                         $target_item = $r[0];
 150                         $parent_id = intval($r[0]['parent']);
 151                         $uid = $r[0]['uid'];
 152                         $updated = $r[0]['edited'];
 153
 154                         $items = q("SELECT `item`.*, `sign`.`signed_text`,`sign`.`signature`,`sign`.`signer`
 155                                 FROM `item` LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id` WHERE `parent` = %d AND visible = 1 AND moderated = 0 ORDER BY `id` ASC",
 156                                 intval($parent_id)
 157                         );
 158
 159                         if (! count($items)) {
 160                                 return;
 161                         }
 162
 163                         // avoid race condition with deleting entries
 164
 165                         if ($items[0]['deleted']) {
 166                                 foreach ($items as $item) {
 167                                         $item['deleted'] = 1;
 168                                 }
 169                         }
 170
 171                         if ((count($items) == 1) && ($items[0]['id'] === $target_item['id']) && ($items[0]['uri'] === $items[0]['parent-uri'])) {
 172                                 logger('notifier: top level post');
 173                                 $top_level = true;
 174                         }
 175
 176                 }
 177
 178                 $r = q("SELECT `contact`.*, `user`.`pubkey` AS `upubkey`, `user`.`prvkey` AS `uprvkey`,
 179                         `user`.`timezone`, `user`.`nickname`, `user`.`sprvkey`, `user`.`spubkey`,
 180                         `user`.`page-flags`, `user`.`prvnets`, `user`.`account-type`
 181                         FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
 182                         WHERE `contact`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
 183                         intval($uid)
 184                 );
 185
 186                 if (! DBM::is_result($r)) {
 187                         return;
 188                 }
 189
 190                 $owner = $r[0];
 191
 192                 $walltowall = ((($top_level) && ($owner['id'] != $items[0]['contact-id'])) ? true : false);
 193
 194                 // Should the post be transmitted to Diaspora?
 195                 $diaspora_delivery = true;
 196
 197                 // If this is a public conversation, notify the feed hub
 198                 $public_message = true;
 199
 200                 // Do a PuSH
 201                 $push_notify = false;
 202
 203                 // Deliver directly to a forum, don't PuSH
 204                 $direct_forum_delivery = false;
 205
 206                 // fill this in with a single salmon slap if applicable
 207                 $slap = '';
 208
 209                 if (! ($mail || $fsuggest || $relocate)) {
 210
 211                         $slap = OStatus::salmon($target_item, $owner);
 212
 213                         require_once 'include/group.php';
 214
 215                         $parent = $items[0];
 216
 217                         $thr_parent = q("SELECT `network`, `author-link`, `owner-link` FROM `item` WHERE `uri` = '%s' AND `uid` = %d",
 218                                 dbesc($target_item["thr-parent"]), intval($target_item["uid"]));
 219
 220                         logger('GUID: '.$target_item["guid"].': Parent is '.$parent['network'].'. Thread parent is '.$thr_parent[0]['network'], LOGGER_DEBUG);
 221
 222                         // This is IMPORTANT!!!!
 223
 224                         // We will only send a "notify owner to relay" or followup message if the referenced post
 225                         // originated on our system by virtue of having our hostname somewhere
 226                         // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
 227
 228                         // if $parent['wall'] == 1 we will already have the parent message in our array
 229                         // and we will relay the whole lot.
 230
 231                         // expire sends an entire group of expire messages and cannot be forwarded.
 232                         // However the conversation owner will be a part of the conversation and will
 233                         // be notified during this run.
 234                         // Other DFRN conversation members will be alerted during polled updates.
 235
 236
 237
 238                         // Diaspora members currently are not notified of expirations, and other networks have
 239                         // either limited or no ability to process deletions. We should at least fix Diaspora
 240                         // by stringing togther an array of retractions and sending them onward.
 241
 242
 243                         $localhost = str_replace('www.','',$a->get_hostname());
 244                         if (strpos($localhost,':')) {
 245                                 $localhost = substr($localhost,0,strpos($localhost,':'));
 246                         }
 247                         /**
 248                          *
 249                          * Be VERY CAREFUL if you make any changes to the following several lines. Seemingly innocuous changes
 250                          * have been known to cause runaway conditions which affected several servers, along with
 251                          * permissions issues.
 252                          *
 253                          */
 254
 255                         $relay_to_owner = false;
 256
 257                         if (!$top_level && ($parent['wall'] == 0) && !$expire && (stristr($target_item['uri'],$localhost))) {
 258                                 $relay_to_owner = true;
 259                         }
 260
 261
 262                         if (($cmd === 'uplink') && (intval($parent['forum_mode']) == 1) && !$top_level) {
 263                                 $relay_to_owner = true;
 264                         }
 265
 266                         // until the 'origin' flag has been in use for several months
 267                         // we will just use it as a fallback test
 268                         // later we will be able to use it as the primary test of whether or not to relay.
 269
 270                         if (! $target_item['origin']) {
 271                                 $relay_to_owner = false;
 272                         }
 273                         if ($parent['origin']) {
 274                                 $relay_to_owner = false;
 275                         }
 276
 277                         // Special treatment for forum posts
 278                         if (($target_item['author-link'] != $target_item['owner-link']) &&
 279                                 ($owner['id'] != $target_item['contact-id']) &&
 280                                 ($target_item['uri'] === $target_item['parent-uri'])) {
 281
 282                                 $fields = array('forum', 'prv');
 283                                 $condition = array('id' => $target_item['contact-id']);
 284                                 $contact = dba::select('contact', $fields, $condition, array('limit' => 1));
 285                                 if (!DBM::is_result($contact)) {
 286                                         // Should never happen
 287                                         return false;
 288                                 }
 289
 290                                 // Is the post from a forum?
 291                                 if ($contact['forum'] || $contact['prv']) {
 292                                         $relay_to_owner = true;
 293                                         $direct_forum_delivery = true;
 294                                 }
 295                         }
 296                         if ($relay_to_owner) {
 297                                 logger('notifier: followup '.$target_item["guid"], LOGGER_DEBUG);
 298                                 // local followup to remote post
 299                                 $followup = true;
 300                                 $public_message = false; // not public
 301                                 $conversant_str = dbesc($parent['contact-id']);
 302                                 $recipients = array($parent['contact-id']);
 303                                 $recipients_followup  = array($parent['contact-id']);
 304
 305                                 //if (!$target_item['private'] && $target_item['wall'] &&
 306                                 if (!$target_item['private'] &&
 307                                         (strlen($target_item['allow_cid'].$target_item['allow_gid'].
 308                                                 $target_item['deny_cid'].$target_item['deny_gid']) == 0))
 309                                         $push_notify = true;
 310
 311                                 if (($thr_parent && ($thr_parent[0]['network'] == NETWORK_OSTATUS)) || ($parent['network'] == NETWORK_OSTATUS)) {
 312
 313                                         $push_notify = true;
 314
 315                                         if ($parent["network"] == NETWORK_OSTATUS) {
 316                                                 // Distribute the message to the DFRN contacts as if this wasn't a followup since OStatus can't relay comments
 317                                                 // Currently it is work at progress
 318                                                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `network` = '%s' AND NOT `blocked` AND NOT `pending` AND NOT `archive`",
 319                                                         intval($uid),
 320                                                         dbesc(NETWORK_DFRN)
 321                                                 );
 322                                                 if (DBM::is_result($r)) {
 323                                                         foreach ($r as $rr) {
 324                                                                 $recipients_followup[] = $rr['id'];
 325                                                         }
 326                                                 }
 327                                         }
 328                                 }
 329
 330                                 if ($direct_forum_delivery) {
 331                                         $push_notify = false;
 332                                 }
 333
 334                                 logger("Notify ".$target_item["guid"]." via PuSH: ".($push_notify?"Yes":"No"), LOGGER_DEBUG);
 335                         } else {
 336                                 $followup = false;
 337
 338                                 logger('Distributing directly '.$target_item["guid"], LOGGER_DEBUG);
 339
 340                                 // don't send deletions onward for other people's stuff
 341
 342                                 if ($target_item['deleted'] && (! intval($target_item['wall']))) {
 343                                         logger('notifier: ignoring delete notification for non-wall item');
 344                                         return;
 345                                 }
 346
 347                                 if ((strlen($parent['allow_cid']))
 348                                         || (strlen($parent['allow_gid']))
 349                                         || (strlen($parent['deny_cid']))
 350                                         || (strlen($parent['deny_gid']))) {
 351                                         $public_message = false; // private recipients, not public
 352                                 }
 353
 354                                 $allow_people = expand_acl($parent['allow_cid']);
 355                                 $allow_groups = expand_groups(expand_acl($parent['allow_gid']),true);
 356                                 $deny_people  = expand_acl($parent['deny_cid']);
 357                                 $deny_groups  = expand_groups(expand_acl($parent['deny_gid']));
 358
 359                                 // if our parent is a public forum (forum_mode == 1), uplink to the origional author causing
 360                                 // a delivery fork. private groups (forum_mode == 2) do not uplink
 361
 362                                 if ((intval($parent['forum_mode']) == 1) && (! $top_level) && ($cmd !== 'uplink')) {
 363                                         Worker::add($a->queue['priority'], 'Notifier', 'uplink', $item_id);
 364                                 }
 365
 366                                 $conversants = array();
 367
 368                                 foreach ($items as $item) {
 369                                         $recipients[] = $item['contact-id'];
 370                                         $conversants[] = $item['contact-id'];
 371                                         // pull out additional tagged people to notify (if public message)
 372                                         if ($public_message && strlen($item['inform'])) {
 373                                                 $people = explode(',',$item['inform']);
 374                                                 foreach ($people as $person) {
 375                                                         if (substr($person,0,4) === 'cid:') {
 376                                                                 $recipients[] = intval(substr($person,4));
 377                                                                 $conversants[] = intval(substr($person,4));
 378                                                         } else {
 379                                                                 $url_recipients[] = substr($person,4);
 380                                                         }
 381                                                 }
 382                                         }
 383                                 }
 384
 385                                 if (count($url_recipients))
 386                                         logger('notifier: '.$target_item["guid"].' url_recipients ' . print_r($url_recipients,true));
 387
 388                                 $conversants = array_unique($conversants);
 389
 390
 391                                 $recipients = array_unique(array_merge($recipients,$allow_people,$allow_groups));
 392                                 $deny = array_unique(array_merge($deny_people,$deny_groups));
 393                                 $recipients = array_diff($recipients,$deny);
 394
 395                                 $conversant_str = dbesc(implode(', ',$conversants));
 396                         }
 397
 398                         // If the thread parent is OStatus then do some magic to distribute the messages.
 399                         // We have not only to look at the parent, since it could be a Friendica thread.
 400                         if (($thr_parent && ($thr_parent[0]['network'] == NETWORK_OSTATUS)) || ($parent['network'] == NETWORK_OSTATUS)) {
 401
 402                                 $diaspora_delivery = false;
 403
 404                                 logger('Some parent is OStatus for '.$target_item["guid"]." - Author: ".$thr_parent[0]['author-link']." - Owner: ".$thr_parent[0]['owner-link'], LOGGER_DEBUG);
 405
 406                                 // Send a salmon to the parent author
 407                                 $r = q("SELECT `url`, `notify` FROM `contact` WHERE `nurl`='%s' AND `uid` IN (0, %d) AND `notify` != ''",
 408                                         dbesc(normalise_link($thr_parent[0]['author-link'])),
 409                                         intval($uid));
 410                                 if (DBM::is_result($r)) {
 411                                         $probed_contact = $r[0];
 412                                 } else {
 413                                         $probed_contact = Probe::uri($thr_parent[0]['author-link']);
 414                                 }
 415
 416                                 if ($probed_contact["notify"] != "") {
 417                                         logger('Notify parent author '.$probed_contact["url"].': '.$probed_contact["notify"]);
 418                                         $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
 419                                 }
 420
 421                                 // Send a salmon to the parent owner
 422                                 $r = q("SELECT `url`, `notify` FROM `contact` WHERE `nurl`='%s' AND `uid` IN (0, %d) AND `notify` != ''",
 423                                         dbesc(normalise_link($thr_parent[0]['owner-link'])),
 424                                         intval($uid));
 425                                 if (DBM::is_result($r)) {
 426                                         $probed_contact = $r[0];
 427                                 } else {
 428                                         $probed_contact = Probe::uri($thr_parent[0]['owner-link']);
 429                                 }
 430
 431                                 if ($probed_contact["notify"] != "") {
 432                                         logger('Notify parent owner '.$probed_contact["url"].': '.$probed_contact["notify"]);
 433                                         $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
 434                                 }
 435
 436                                 // Send a salmon notification to every person we mentioned in the post
 437                                 $arr = explode(',',$target_item['tag']);
 438                                 foreach ($arr as $x) {
 439                                         //logger('Checking tag '.$x, LOGGER_DEBUG);
 440                                         $matches = null;
 441                                         if (preg_match('/@\[url=([^\]]*)\]/',$x,$matches)) {
 442                                                         $probed_contact = Probe::uri($matches[1]);
 443                                                 if ($probed_contact["notify"] != "") {
 444                                                         logger('Notify mentioned user '.$probed_contact["url"].': '.$probed_contact["notify"]);
 445                                                         $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
 446                                                 }
 447                                         }
 448                                 }
 449
 450                                 // It only makes sense to distribute answers to OStatus messages to Friendica and OStatus - but not Diaspora
 451                                 $sql_extra = " AND `network` IN ('".NETWORK_OSTATUS."', '".NETWORK_DFRN."')";
 452                         } else {
 453                                 $sql_extra = " AND `network` IN ('".NETWORK_OSTATUS."', '".NETWORK_DFRN."', '".NETWORK_DIASPORA."', '".NETWORK_MAIL."', '".NETWORK_MAIL2."')";
 454                         }
 455                 } else {
 456                         $public_message = false;
 457                 }
 458
 459                 // If this is a public message and pubmail is set on the parent, include all your email contacts
 460
 461                 $mail_disabled = ((function_exists('imap_open') && (!Config::get('system','imap_disabled'))) ? 0 : 1);
 462
 463                 if (! $mail_disabled) {
 464                         if ((! strlen($target_item['allow_cid'])) && (! strlen($target_item['allow_gid']))
 465                                 && (! strlen($target_item['deny_cid'])) && (! strlen($target_item['deny_gid']))
 466                                 && (intval($target_item['pubmail']))) {
 467                                 $r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `network` = '%s'",
 468                                         intval($uid),
 469                                         dbesc(NETWORK_MAIL)
 470                                 );
 471                                 if (DBM::is_result($r)) {
 472                                         foreach ($r as $rr) {
 473                                                 $recipients[] = $rr['id'];
 474                                         }
 475                                 }
 476                         }
 477                 }
 478
 479                 if ($followup) {
 480                         $recip_str = implode(', ', $recipients_followup);
 481                 } else {
 482                         $recip_str = implode(', ', $recipients);
 483                 }
 484                 if ($relocate) {
 485                         $r = $recipients_relocate;
 486                 } else {
 487                         $r = q("SELECT `id`, `url`, `network`, `self` FROM `contact`
 488                                 WHERE `id` IN (%s) AND NOT `blocked` AND NOT `pending` AND NOT `archive`".$sql_extra,
 489                                 dbesc($recip_str)
 490                         );
 491                 }
 492
 493                 // delivery loop
 494
 495                 if (DBM::is_result($r)) {
 496                         foreach ($r as $contact) {
 497                                 if ($contact['self']) {
 498                                         continue;
 499                                 }
 500                                 logger("Deliver ".$target_item["guid"]." to ".$contact['url']." via network ".$contact['network'], LOGGER_DEBUG);
 501
 502                                 Worker::add(array('priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true),
 503                                                 'Delivery', $cmd, $item_id, (int)$contact['id']);
 504                         }
 505                 }
 506
 507                 // send salmon slaps to mentioned remote tags (@foo@example.com) in OStatus posts
 508                 // They are especially used for notifications to OStatus users that don't follow us.
 509
 510                 if ($slap && count($url_recipients) && ($public_message || $push_notify) && $normal_mode) {
 511                         if (!Config::get('system','dfrn_only')) {
 512                                 foreach ($url_recipients as $url) {
 513                                         if ($url) {
 514                                                 logger('notifier: urldelivery: ' . $url);
 515                                                 $deliver_status = slapper($owner,$url,$slap);
 516                                                 /// @TODO Redeliver/queue these items on failure, though there is no contact record
 517                                         }
 518                                 }
 519                         }
 520                 }
 521
 522
 523                 if ($public_message) {
 524
 525                         $r0 = array();
 526                         $r1 = array();
 527
 528                         if ($diaspora_delivery) {
 529                                 if (!$followup) {
 530                                         $r0 = Diaspora::relay_list();
 531                                 }
 532
 533                                 $r1 = q("SELECT `batch`, ANY_VALUE(`id`) AS `id`, ANY_VALUE(`name`) AS `name`, ANY_VALUE(`network`) AS `network`
 534                                         FROM `contact` WHERE `network` = '%s' AND `batch` != ''
 535                                         AND `uid` = %d AND `rel` != %d AND NOT `blocked` AND NOT `pending` AND NOT `archive` GROUP BY `batch`",
 536                                         dbesc(NETWORK_DIASPORA),
 537                                         intval($owner['uid']),
 538                                         intval(CONTACT_IS_SHARING)
 539                                 );
 540                         }
 541
 542                         $r2 = q("SELECT `id`, `name`,`network` FROM `contact`
 543                                 WHERE `network` in ('%s', '%s') AND `uid` = %d AND NOT `blocked` AND NOT `pending` AND NOT `archive` AND `rel` != %d",
 544                                 dbesc(NETWORK_DFRN),
 545                                 dbesc(NETWORK_MAIL2),
 546                                 intval($owner['uid']),
 547                                 intval(CONTACT_IS_SHARING)
 548                         );
 549
 550                         $r = array_merge($r2,$r1,$r0);
 551
 552                         if (DBM::is_result($r)) {
 553                                 logger('pubdeliver '.$target_item["guid"].': '.print_r($r,true), LOGGER_DEBUG);
 554
 555                                 foreach ($r as $rr) {
 556
 557                                         // except for Diaspora batch jobs
 558                                         // Don't deliver to folks who have already been delivered to
 559
 560                                         if (($rr['network'] !== NETWORK_DIASPORA) && (in_array($rr['id'],$conversants))) {
 561                                                 logger('notifier: already delivered id=' . $rr['id']);
 562                                                 continue;
 563                                         }
 564
 565                                         if ((! $mail) && (! $fsuggest) && (! $followup)) {
 566                                                 logger('notifier: delivery agent: '.$rr['name'].' '.$rr['id'].' '.$rr['network'].' '.$target_item["guid"]);
 567                                                 Worker::add(array('priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true),
 568                                                                 'Delivery', $cmd, $item_id, (int)$rr['id']);
 569                                         }
 570                                 }
 571                         }
 572
 573                         $push_notify = true;
 574
 575                 }
 576
 577                 // Notify PuSH subscribers (Used for OStatus distribution of regular posts)
 578                 if ($push_notify) {
 579                         // Set push flag for PuSH subscribers to this topic,
 580                         // they will be notified in queue.php
 581                         q("UPDATE `push_subscriber` SET `push` = 1 ".
 582                           "WHERE `nickname` = '%s' AND `push` = 0", dbesc($owner['nickname']));
 583
 584                         logger('Activating internal PuSH for item '.$item_id, LOGGER_DEBUG);
 585
 586                         // Handling the pubsubhubbub requests
 587                         Worker::add(array('priority' => PRIORITY_HIGH, 'created' => $a->queue['created'], 'dont_fork' => true),
 588                                         'PubSubPublish');
 589                 }
 590
 591                 logger('notifier: calling hooks', LOGGER_DEBUG);
 592
 593                 if ($normal_mode) {
 594                         call_hooks('notifier_normal',$target_item);
 595                 }
 596
 597                 call_hooks('notifier_end',$target_item);
 598
 599                 return;
 600         }
 601 }