src/Worker/Notifier.php

   1 <?php
   2 /**
   3  * @file src/Worker/Notifier.php
   4  */
   5 namespace Friendica\Worker;
   6
   7 use Friendica\Core\Config;
   8 use Friendica\Core\Hook;
   9 use Friendica\Core\Logger;
  10 use Friendica\Core\Protocol;
  11 use Friendica\Core\Worker;
  12 use Friendica\Database\DBA;
  13 use Friendica\DI;
  14 use Friendica\Model\APContact;
  15 use Friendica\Model\Contact;
  16 use Friendica\Model\Conversation;
  17 use Friendica\Model\Group;
  18 use Friendica\Model\Item;
  19 use Friendica\Model\ItemDeliveryData;
  20 use Friendica\Model\PushSubscriber;
  21 use Friendica\Model\User;
  22 use Friendica\Network\Probe;
  23 use Friendica\Protocol\ActivityPub;
  24 use Friendica\Protocol\Diaspora;
  25 use Friendica\Protocol\OStatus;
  26 use Friendica\Protocol\Salmon;
  27 use Friendica\Util\ACLFormatter;
  28
  29 require_once 'include/items.php';
  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 constants that are defined in Worker/Delivery.php
  37  * and ITEM_ID is the id of the item in the database that needs to be sent to others.
  38  */
  39
  40 class Notifier
  41 {
  42         public static function execute($cmd, $target_id)
  43         {
  44                 $a = DI::app();
  45
  46                 Logger::info('Invoked', ['cmd' => $cmd, 'target' => $target_id]);
  47
  48                 $top_level = false;
  49                 $recipients = [];
  50                 $url_recipients = [];
  51
  52                 $delivery_contacts_stmt = null;
  53                 $target_item = [];
  54                 $parent = [];
  55                 $thr_parent = [];
  56                 $items = [];
  57                 $delivery_queue_count = 0;
  58
  59                 if ($cmd == Delivery::MAIL) {
  60                         $message = DBA::selectFirst('mail', ['uid', 'contact-id'], ['id' => $target_id]);
  61                         if (!DBA::isResult($message)) {
  62                                 return;
  63                         }
  64                         $uid = $message['uid'];
  65                         $recipients[] = $message['contact-id'];
  66
  67                         $mail = ActivityPub\Transmitter::ItemArrayFromMail($target_id);
  68                         $inboxes = ActivityPub\Transmitter::fetchTargetInboxes($mail, $uid, true);
  69                         foreach ($inboxes as $inbox) {
  70                                 Logger::info('Delivery via ActivityPub', ['cmd' => $cmd, 'target' => $target_id, 'inbox' => $inbox]);
  71                                 Worker::add(['priority' => PRIORITY_HIGH, 'created' => $a->queue['created'], 'dont_fork' => true],
  72                                         'APDelivery', $cmd, $target_id, $inbox, $uid);
  73                         }
  74                 } elseif ($cmd == Delivery::SUGGESTION) {
  75                         $suggest = DBA::selectFirst('fsuggest', ['uid', 'cid'], ['id' => $target_id]);
  76                         if (!DBA::isResult($suggest)) {
  77                                 return;
  78                         }
  79                         $uid = $suggest['uid'];
  80                         $recipients[] = $suggest['cid'];
  81                 } elseif ($cmd == Delivery::REMOVAL) {
  82                         return self::notifySelfRemoval($target_id, $a->queue['priority'], $a->queue['created']);
  83                 } elseif ($cmd == Delivery::RELOCATION) {
  84                         $uid = $target_id;
  85
  86                         $condition = ['uid' => $target_id, 'self' => false, 'network' => [Protocol::DFRN, Protocol::DIASPORA]];
  87                         $delivery_contacts_stmt = DBA::select('contact', ['id', 'url', 'addr', 'network', 'protocol', 'batch'], $condition);
  88                 } else {
  89                         // find ancestors
  90                         $condition = ['id' => $target_id, 'visible' => true, 'moderated' => false];
  91                         $target_item = Item::selectFirst([], $condition);
  92
  93                         if (!DBA::isResult($target_item) || !intval($target_item['parent'])) {
  94                                 Logger::info('No target item', ['cmd' => $cmd, 'target' => $target_id]);
  95                                 return;
  96                         }
  97
  98                         if (!empty($target_item['contact-uid'])) {
  99                                 $uid = $target_item['contact-uid'];
 100                         } elseif (!empty($target_item['uid'])) {
 101                                 $uid = $target_item['uid'];
 102                         } else {
 103                                 Logger::info('Only public users, quitting', ['target' => $target_id]);
 104                                 return;
 105                         }
 106
 107                         $condition = ['parent' => $target_item['parent'], 'visible' => true, 'moderated' => false];
 108                         $params = ['order' => ['id']];
 109                         $items_stmt = Item::select([], $condition, $params);
 110                         if (!DBA::isResult($items_stmt)) {
 111                                 Logger::info('No item found', ['cmd' => $cmd, 'target' => $target_id]);
 112                                 return;
 113                         }
 114
 115                         $items = Item::inArray($items_stmt);
 116
 117                         // avoid race condition with deleting entries
 118                         if ($items[0]['deleted']) {
 119                                 foreach ($items as $item) {
 120                                         $item['deleted'] = 1;
 121                                 }
 122                         }
 123
 124                         if ((count($items) == 1) && ($items[0]['id'] === $target_item['id']) && ($items[0]['uri'] === $items[0]['parent-uri'])) {
 125                                 Logger::info('Top level post', ['target' => $target_id]);
 126                                 $top_level = true;
 127                         }
 128                 }
 129
 130                 $owner = User::getOwnerDataById($uid);
 131                 if (!$owner) {
 132                         Logger::info('Owner not found', ['cmd' => $cmd, 'target' => $target_id]);
 133                         return;
 134                 }
 135
 136                 // Should the post be transmitted to Diaspora?
 137                 $diaspora_delivery = true;
 138
 139                 // If this is a public conversation, notify the feed hub
 140                 $public_message = true;
 141
 142                 // Do a PuSH
 143                 $push_notify = false;
 144
 145                 // Deliver directly to a forum, don't PuSH
 146                 $direct_forum_delivery = false;
 147
 148                 $followup = false;
 149                 $recipients_followup = [];
 150
 151                 if (!empty($target_item) && !empty($items)) {
 152                         $parent = $items[0];
 153
 154                         $fields = ['network', 'author-id', 'author-link', 'owner-id'];
 155                         $condition = ['uri' => $target_item["thr-parent"], 'uid' => $target_item["uid"]];
 156                         $thr_parent = Item::selectFirst($fields, $condition);
 157                         if (empty($thr_parent)) {
 158                                 $thr_parent = $parent;
 159                         }
 160
 161                         Logger::log('GUID: ' . $target_item["guid"] . ': Parent is ' . $parent['network'] . '. Thread parent is ' . $thr_parent['network'], Logger::DEBUG);
 162
 163                         if (!self::isRemovalActivity($cmd, $owner, Protocol::ACTIVITYPUB)) {
 164                                 $delivery_queue_count += self::activityPubDelivery($cmd, $target_item, $parent, $thr_parent, $a->queue['priority'], $a->queue['created'], $owner);
 165                         }
 166
 167                         // Only deliver threaded replies (comment to a comment) to Diaspora
 168                         // when the original comment author does support the Diaspora protocol.
 169                         if ($target_item['parent-uri'] != $target_item['thr-parent']) {
 170                                 $diaspora_delivery = Diaspora::isSupportedByContactUrl($thr_parent['author-link']);
 171                                 Logger::info('Threaded comment', ['diaspora_delivery' => (int)$diaspora_delivery]);
 172                         }
 173
 174                         // This is IMPORTANT!!!!
 175
 176                         // We will only send a "notify owner to relay" or followup message if the referenced post
 177                         // originated on our system by virtue of having our hostname somewhere
 178                         // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
 179
 180                         // if $parent['wall'] == 1 we will already have the parent message in our array
 181                         // and we will relay the whole lot.
 182
 183                         $localhost = str_replace('www.','', DI::baseUrl()->getHostname());
 184                         if (strpos($localhost,':')) {
 185                                 $localhost = substr($localhost,0,strpos($localhost,':'));
 186                         }
 187                         /**
 188                          *
 189                          * Be VERY CAREFUL if you make any changes to the following several lines. Seemingly innocuous changes
 190                          * have been known to cause runaway conditions which affected several servers, along with
 191                          * permissions issues.
 192                          *
 193                          */
 194
 195                         $relay_to_owner = false;
 196
 197                         if (!$top_level && ($parent['wall'] == 0) && (stristr($target_item['uri'],$localhost))) {
 198                                 $relay_to_owner = true;
 199                         }
 200
 201                         if (($cmd === Delivery::UPLINK) && (intval($parent['forum_mode']) == 1) && !$top_level) {
 202                                 $relay_to_owner = true;
 203                         }
 204
 205                         // until the 'origin' flag has been in use for several months
 206                         // we will just use it as a fallback test
 207                         // later we will be able to use it as the primary test of whether or not to relay.
 208
 209                         if (!$target_item['origin']) {
 210                                 $relay_to_owner = false;
 211                         }
 212                         if ($parent['origin']) {
 213                                 $relay_to_owner = false;
 214                         }
 215
 216                         // Special treatment for forum posts
 217                         if (Item::isForumPost($target_item, $owner)) {
 218                                 $relay_to_owner = true;
 219                                 $direct_forum_delivery = true;
 220                         }
 221
 222                         // Avoid that comments in a forum thread are sent to OStatus
 223                         if (Item::isForumPost($parent, $owner)) {
 224                                 $direct_forum_delivery = true;
 225                         }
 226
 227                         if ($relay_to_owner) {
 228                                 // local followup to remote post
 229                                 $followup = true;
 230                                 $public_message = false; // not public
 231                                 $recipients = [$parent['contact-id']];
 232                                 $recipients_followup  = [$parent['contact-id']];
 233
 234                                 Logger::info('Followup', ['target' => $target_id, 'guid' => $target_item['guid'], 'to' => $parent['contact-id']]);
 235
 236                                 //if (!$target_item['private'] && $target_item['wall'] &&
 237                                 if (!$target_item['private'] &&
 238                                         (strlen($target_item['allow_cid'].$target_item['allow_gid'].
 239                                                 $target_item['deny_cid'].$target_item['deny_gid']) == 0))
 240                                         $push_notify = true;
 241
 242                                 if (($thr_parent && ($thr_parent['network'] == Protocol::OSTATUS)) || ($parent['network'] == Protocol::OSTATUS)) {
 243                                         $push_notify = true;
 244
 245                                         if ($parent["network"] == Protocol::OSTATUS) {
 246                                                 // Distribute the message to the DFRN contacts as if this wasn't a followup since OStatus can't relay comments
 247                                                 // Currently it is work at progress
 248                                                 $condition = ['uid' => $uid, 'network' => Protocol::DFRN, 'blocked' => false, 'pending' => false, 'archive' => false];
 249                                                 $followup_contacts_stmt = DBA::select('contact', ['id'], $condition);
 250                                                 while($followup_contact = DBA::fetch($followup_contacts_stmt)) {
 251                                                         $recipients_followup[] = $followup_contact['id'];
 252                                                 }
 253                                                 DBA::close($followup_contacts_stmt);
 254                                         }
 255                                 }
 256
 257                                 if ($direct_forum_delivery) {
 258                                         $push_notify = false;
 259                                 }
 260
 261                                 Logger::log('Notify ' . $target_item["guid"] .' via PuSH: ' . ($push_notify ? "Yes":"No"), Logger::DEBUG);
 262                         } else {
 263                                 $followup = false;
 264
 265                                 Logger::info('Distributing directly', ['target' => $target_id, 'guid' => $target_item['guid']]);
 266
 267                                 // don't send deletions onward for other people's stuff
 268
 269                                 if ($target_item['deleted'] && !intval($target_item['wall'])) {
 270                                         Logger::log('Ignoring delete notification for non-wall item');
 271                                         return;
 272                                 }
 273
 274                                 if (strlen($parent['allow_cid'])
 275                                         || strlen($parent['allow_gid'])
 276                                         || strlen($parent['deny_cid'])
 277                                         || strlen($parent['deny_gid'])) {
 278                                         $public_message = false; // private recipients, not public
 279                                 }
 280
 281                                 $aclFormatter = DI::aclFormatter();
 282
 283                                 $allow_people = $aclFormatter->expand($parent['allow_cid']);
 284                                 $allow_groups = Group::expand($uid, $aclFormatter->expand($parent['allow_gid']),true);
 285                                 $deny_people  = $aclFormatter->expand($parent['deny_cid']);
 286                                 $deny_groups  = Group::expand($uid, $aclFormatter->expand($parent['deny_gid']));
 287
 288                                 // if our parent is a public forum (forum_mode == 1), uplink to the origional author causing
 289                                 // a delivery fork. private groups (forum_mode == 2) do not uplink
 290
 291                                 if ((intval($parent['forum_mode']) == 1) && !$top_level && ($cmd !== Delivery::UPLINK)) {
 292                                         Worker::add($a->queue['priority'], 'Notifier', Delivery::UPLINK, $target_id);
 293                                 }
 294
 295                                 foreach ($items as $item) {
 296                                         $recipients[] = $item['contact-id'];
 297                                         // pull out additional tagged people to notify (if public message)
 298                                         if ($public_message && strlen($item['inform'])) {
 299                                                 $people = explode(',',$item['inform']);
 300                                                 foreach ($people as $person) {
 301                                                         if (substr($person,0,4) === 'cid:') {
 302                                                                 $recipients[] = intval(substr($person,4));
 303                                                         } else {
 304                                                                 $url_recipients[] = substr($person,4);
 305                                                         }
 306                                                 }
 307                                         }
 308                                 }
 309
 310                                 if (count($url_recipients)) {
 311                                         Logger::notice('Deliver', ['target' => $target_id, 'guid' => $target_item['guid'], 'recipients' => $url_recipients]);
 312                                 }
 313
 314                                 $recipients = array_unique(array_merge($recipients, $allow_people, $allow_groups));
 315                                 $deny = array_unique(array_merge($deny_people, $deny_groups));
 316                                 $recipients = array_diff($recipients, $deny);
 317
 318                                 // If this is a public message and pubmail is set on the parent, include all your email contacts
 319                                 if (
 320                                         function_exists('imap_open')
 321                                         && !Config::get('system','imap_disabled')
 322                                         && $public_message
 323                                         && intval($target_item['pubmail'])
 324                                 ) {
 325                                         $mail_contacts_stmt = DBA::select('contact', ['id'], ['uid' => $uid, 'network' => Protocol::MAIL]);
 326                                         while ($mail_contact = DBA::fetch($mail_contacts_stmt)) {
 327                                                 $recipients[] = $mail_contact['id'];
 328                                         }
 329                                         DBA::close($mail_contacts_stmt);
 330                                 }
 331                         }
 332
 333                         // If the thread parent is OStatus then do some magic to distribute the messages.
 334                         // We have not only to look at the parent, since it could be a Friendica thread.
 335                         if (($thr_parent && ($thr_parent['network'] == Protocol::OSTATUS)) || ($parent['network'] == Protocol::OSTATUS)) {
 336                                 $diaspora_delivery = false;
 337
 338                                 Logger::log('Some parent is OStatus for '.$target_item["guid"]." - Author: ".$thr_parent['author-id']." - Owner: ".$thr_parent['owner-id'], Logger::DEBUG);
 339
 340                                 // Send a salmon to the parent author
 341                                 $probed_contact = DBA::selectFirst('contact', ['url', 'notify'], ['id' => $thr_parent['author-id']]);
 342                                 if (DBA::isResult($probed_contact) && !empty($probed_contact["notify"])) {
 343                                         Logger::log('Notify parent author '.$probed_contact["url"].': '.$probed_contact["notify"]);
 344                                         $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
 345                                 }
 346
 347                                 // Send a salmon to the parent owner
 348                                 $probed_contact = DBA::selectFirst('contact', ['url', 'notify'], ['id' => $thr_parent['owner-id']]);
 349                                 if (DBA::isResult($probed_contact) && !empty($probed_contact["notify"])) {
 350                                         Logger::log('Notify parent owner '.$probed_contact["url"].': '.$probed_contact["notify"]);
 351                                         $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
 352                                 }
 353
 354                                 // Send a salmon notification to every person we mentioned in the post
 355                                 $arr = explode(',',$target_item['tag']);
 356                                 foreach ($arr as $x) {
 357                                         //Logger::log('Checking tag '.$x, Logger::DEBUG);
 358                                         $matches = null;
 359                                         if (preg_match('/@\[url=([^\]]*)\]/',$x,$matches)) {
 360                                                         $probed_contact = Probe::uri($matches[1]);
 361                                                 if ($probed_contact["notify"] != "") {
 362                                                         Logger::log('Notify mentioned user '.$probed_contact["url"].': '.$probed_contact["notify"]);
 363                                                         $url_recipients[$probed_contact["notify"]] = $probed_contact["notify"];
 364                                                 }
 365                                         }
 366                                 }
 367
 368                                 // It only makes sense to distribute answers to OStatus messages to Friendica and OStatus - but not Diaspora
 369                                 $networks = [Protocol::DFRN];
 370                         } elseif ($diaspora_delivery) {
 371                                 $networks = [Protocol::DFRN, Protocol::DIASPORA, Protocol::MAIL];
 372                                 if (($parent['network'] == Protocol::DIASPORA) || ($thr_parent['network'] == Protocol::DIASPORA)) {
 373                                         Logger::info('Add AP contacts', ['target' => $target_id, 'guid' => $target_item['guid']]);
 374                                         $networks[] = Protocol::ACTIVITYPUB;
 375                                 }
 376                         } else {
 377                                 $networks = [Protocol::DFRN, Protocol::MAIL];
 378                         }
 379                 } else {
 380                         $public_message = false;
 381                 }
 382
 383                 if (empty($delivery_contacts_stmt)) {
 384                         if ($followup) {
 385                                 $recipients = $recipients_followup;
 386                         }
 387                         $condition = ['id' => $recipients, 'self' => false,
 388                                 'blocked' => false, 'pending' => false, 'archive' => false];
 389                         if (!empty($networks)) {
 390                                 $condition['network'] = $networks;
 391                         }
 392                         $delivery_contacts_stmt = DBA::select('contact', ['id', 'addr', 'url', 'network', 'protocol', 'batch'], $condition);
 393                 }
 394
 395                 $conversants = [];
 396                 $batch_delivery = false;
 397
 398                 if ($public_message && !in_array($cmd, [Delivery::MAIL, Delivery::SUGGESTION]) && !$followup) {
 399                         $relay_list = [];
 400
 401                         if ($diaspora_delivery) {
 402                                 $batch_delivery = true;
 403
 404                                 $relay_list_stmt = DBA::p(
 405                                         "SELECT
 406                                                 `batch`,
 407                                                 ANY_VALUE(`id`) AS `id`,
 408                                                 ANY_VALUE(`url`) AS `url`,
 409                                                 ANY_VALUE(`name`) AS `name`,
 410                                                 ANY_VALUE(`network`) AS `network`,
 411                                                 ANY_VALUE(`protocol`) AS `protocol`
 412                                         FROM `contact`
 413                                         WHERE `network` = ?
 414                                         AND `batch` != ''
 415                                         AND `uid` = ?
 416                                         AND `rel` != ?
 417                                         AND NOT `blocked`
 418                                         AND NOT `pending`
 419                                         AND NOT `archive`
 420                                         GROUP BY `batch`",
 421                                         Protocol::DIASPORA,
 422                                         $owner['uid'],
 423                                         Contact::SHARING
 424                                 );
 425                                 $relay_list = DBA::toArray($relay_list_stmt);
 426
 427                                 // Fetch the participation list
 428                                 // The function will ensure that there are no duplicates
 429                                 $relay_list = Diaspora::participantsForThread($target_id, $relay_list);
 430
 431                                 // Add the relay to the list, avoid duplicates.
 432                                 // Don't send community posts to the relay. Forum posts via the Diaspora protocol are looking ugly.
 433                                 if (!$followup && !Item::isForumPost($target_item, $owner)) {
 434                                         $relay_list = Diaspora::relayList($target_id, $relay_list);
 435                                 }
 436                         }
 437
 438                         $condition = ['network' => Protocol::DFRN, 'uid' => $owner['uid'], 'blocked' => false,
 439                                 'pending' => false, 'archive' => false, 'rel' => [Contact::FOLLOWER, Contact::FRIEND]];
 440
 441                         $r2 = DBA::toArray(DBA::select('contact', ['id', 'url', 'addr', 'name', 'network', 'protocol'], $condition));
 442
 443                         $r = array_merge($r2, $relay_list);
 444
 445                         if (DBA::isResult($r)) {
 446                                 foreach ($r as $rr) {
 447                                         if (!empty($rr['addr']) && ($rr['network'] == Protocol::ACTIVITYPUB) && !DBA::exists('fcontact', ['addr' => $rr['addr']])) {
 448                                                 Logger::info('Contact is AP omly', ['target' => $target_id, 'contact' => $rr['url']]);
 449                                                 continue;
 450                                         }
 451
 452                                         if (!empty($rr['id']) && Contact::isArchived($rr['id'])) {
 453                                                 Logger::info('Contact is archived', ['target' => $target_id, 'contact' => $rr['url']]);
 454                                                 continue;
 455                                         }
 456
 457                                         if (self::isRemovalActivity($cmd, $owner, $rr['network'])) {
 458                                                 Logger::log('Skipping dropping for ' . $rr['url'] . ' since the network supports account removal commands.', Logger::DEBUG);
 459                                                 continue;
 460                                         }
 461
 462                                         if (self::skipDFRN($rr, $target_item, $parent, $thr_parent, $cmd)) {
 463                                                 Logger::info('Contact can be delivered via AP, so skip delivery via legacy DFRN/Diaspora', ['id' => $target_id, 'url' => $rr['url']]);
 464                                                 continue;
 465                                         }
 466
 467                                         $conversants[] = $rr['id'];
 468
 469                                         Logger::info('Public delivery', ['target' => $target_id, 'guid' => $target_item["guid"], 'to' => $rr]);
 470
 471                                         // Ensure that posts with our own protocol arrives before Diaspora posts arrive.
 472                                         // Situation is that sometimes Friendica servers receive Friendica posts over the Diaspora protocol first.
 473                                         // The conversion in Markdown reduces the formatting, so these posts should arrive after the Friendica posts.
 474                                         // This is only important for high and medium priority tasks and not for Low priority jobs like deletions.
 475                                         if (($rr['network'] == Protocol::DIASPORA) && in_array($a->queue['priority'], [PRIORITY_HIGH, PRIORITY_MEDIUM])) {
 476                                                 $deliver_options = ['priority' => $a->queue['priority'], 'dont_fork' => true];
 477                                         } else {
 478                                                 $deliver_options = ['priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true];
 479                                         }
 480
 481                                         if (Worker::add($deliver_options, 'Delivery', $cmd, $target_id, (int)$rr['id'])) {
 482                                                 $delivery_queue_count++;
 483                                         }
 484                                 }
 485                         }
 486
 487                         $push_notify = true;
 488                 }
 489
 490                 // delivery loop
 491                 while ($contact = DBA::fetch($delivery_contacts_stmt)) {
 492                         if (!empty($contact['addr']) && ($contact['network'] == Protocol::ACTIVITYPUB) && !DBA::exists('fcontact', ['addr' => $contact['addr']])) {
 493                                 Logger::info('Contact is AP omly', ['target' => $target_id, 'contact' => $contact['url']]);
 494                                 continue;
 495                         }
 496
 497                         if (!empty($contact['id']) && Contact::isArchived($contact['id'])) {
 498                                 Logger::info('Contact is archived', ['target' => $target_id, 'contact' => $contact['url']]);
 499                                 continue;
 500                         }
 501
 502                         if (self::isRemovalActivity($cmd, $owner, $contact['network'])) {
 503                                 Logger::log('Skipping dropping for ' . $contact['url'] . ' since the network supports account removal commands.', Logger::DEBUG);
 504                                 continue;
 505                         }
 506
 507                         if (self::skipDFRN($contact, $target_item, $parent, $thr_parent, $cmd)) {
 508                                 Logger::info('Contact can be delivered via AP, so skip delivery via legacy DFRN/Diaspora', ['target' => $target_id, 'url' => $contact['url']]);
 509                                 continue;
 510                         }
 511
 512                         // Don't deliver to Diaspora if it already had been done as batch delivery
 513                         if (($contact['network'] == Protocol::DIASPORA) && $batch_delivery) {
 514                                 Logger::log('Already delivered  id ' . $target_id . ' via batch to ' . json_encode($contact), Logger::DEBUG);
 515                                 continue;
 516                         }
 517
 518                         // Don't deliver to folks who have already been delivered to
 519                         if (in_array($contact['id'], $conversants)) {
 520                                 Logger::log('Already delivered id ' . $target_id. ' to ' . json_encode($contact), Logger::DEBUG);
 521                                 continue;
 522                         }
 523
 524                         Logger::info('Delivery', ['id' => $target_id, 'to' => $contact]);
 525
 526                         // Ensure that posts with our own protocol arrives before Diaspora posts arrive.
 527                         // Situation is that sometimes Friendica servers receive Friendica posts over the Diaspora protocol first.
 528                         // The conversion in Markdown reduces the formatting, so these posts should arrive after the Friendica posts.
 529                         if ($contact['network'] == Protocol::DIASPORA) {
 530                                 $deliver_options = ['priority' => $a->queue['priority'], 'dont_fork' => true];
 531                         } else {
 532                                 $deliver_options = ['priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true];
 533                         }
 534
 535                         if (Worker::add($deliver_options, 'Delivery', $cmd, $target_id, (int)$contact['id'])) {
 536                                 $delivery_queue_count++;
 537                         }
 538                 }
 539                 DBA::close($delivery_contacts_stmt);
 540
 541                 $url_recipients = array_filter($url_recipients);
 542                 // send salmon slaps to mentioned remote tags (@foo@example.com) in OStatus posts
 543                 // They are especially used for notifications to OStatus users that don't follow us.
 544                 if (!Config::get('system', 'dfrn_only') && count($url_recipients) && ($public_message || $push_notify) && !empty($target_item)) {
 545                         $slap = OStatus::salmon($target_item, $owner);
 546                         foreach ($url_recipients as $url) {
 547                                 Logger::log('Salmon delivery of item ' . $target_id . ' to ' . $url);
 548                                 /// @TODO Redeliver/queue these items on failure, though there is no contact record
 549                                 $delivery_queue_count++;
 550                                 Salmon::slapper($owner, $url, $slap);
 551                                 ItemDeliveryData::incrementQueueDone($target_id, ItemDeliveryData::OSTATUS);
 552                         }
 553                 }
 554
 555                 // Notify PuSH subscribers (Used for OStatus distribution of regular posts)
 556                 if ($push_notify) {
 557                         Logger::log('Activating internal PuSH for item '.$target_id, Logger::DEBUG);
 558
 559                         // Handling the pubsubhubbub requests
 560                         PushSubscriber::publishFeed($owner['uid'], $a->queue['priority']);
 561                 }
 562
 563                 if (!empty($target_item)) {
 564                         Logger::log('Calling hooks for ' . $cmd . ' ' . $target_id, Logger::DEBUG);
 565
 566                         Hook::fork($a->queue['priority'], 'notifier_normal', $target_item);
 567
 568                         Hook::callAll('notifier_end', $target_item);
 569
 570                         // Workaround for pure connector posts
 571                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 572                                 if ($delivery_queue_count == 0) {
 573                                         ItemDeliveryData::incrementQueueDone($target_item['id']);
 574                                         $delivery_queue_count = 1;
 575                                 }
 576
 577                                 ItemDeliveryData::incrementQueueCount($target_item['id'], $delivery_queue_count);
 578                         }
 579                 }
 580
 581                 return;
 582         }
 583
 584         /**
 585          * Checks if the current delivery process needs to be transported via DFRN.
 586          *
 587          * @param array  $contact    Receiver of the post
 588          * @param array  $item       The post
 589          * @param array  $parent     The parent
 590          * @param array  $thr_parent The thread parent
 591          * @param string $cmd        Notifier command
 592          * @return bool
 593          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 594          * @throws \ImagickException
 595          */
 596         private static function skipDFRN($contact, $item, $parent, $thr_parent, $cmd)
 597         {
 598                 if (empty($parent['network'])) {
 599                         return false;
 600                 }
 601
 602                 // Don't skip when the starting post is delivered via Diaspora
 603                 if ($parent['network'] == Protocol::DIASPORA) {
 604                         return false;
 605                 }
 606
 607                 // Also don't skip when the direct thread parent was delivered via Diaspora
 608                 if ($thr_parent['network'] == Protocol::DIASPORA) {
 609                         return false;
 610                 }
 611
 612                 // Use DFRN if we are on the same site
 613                 if (!empty($contact['url']) && Contact::isLocal($contact['url'])) {
 614                         return false;
 615                 }
 616
 617                 // Don't skip when author or owner don't have AP profiles
 618                 if ((!empty($item['author-link']) && empty(APContact::getByURL($item['author-link'], false))) || (!empty($item['owner-link']) && empty(APContact::getByURL($item['owner-link'], false)))) {
 619                         return false;
 620                 }
 621
 622                 // Don't skip DFRN delivery for these commands
 623                 if (in_array($cmd, [Delivery::SUGGESTION, Delivery::REMOVAL, Delivery::RELOCATION, Delivery::POKE])) {
 624                         return false;
 625                 }
 626
 627                 // We deliver reshares via AP whenever possible
 628                 if (ActivityPub\Transmitter::isAnnounce($item)) {
 629                         return true;
 630                 }
 631
 632                 // Skip DFRN when the item will be (forcefully) delivered via AP
 633                 if (Config::get('debug', 'total_ap_delivery') && ($contact['network'] == Protocol::DFRN) && !empty(APContact::getByURL($contact['url'], false))) {
 634                         return true;
 635                 }
 636
 637                 // Skip DFRN delivery if the contact speaks ActivityPub
 638                 return in_array($contact['network'], [Protocol::DFRN, Protocol::DIASPORA]) && ($contact['protocol'] == Protocol::ACTIVITYPUB);
 639         }
 640
 641         /**
 642          * Checks if the current action is a deletion command of a account removal activity
 643          * For Diaspora and ActivityPub we don't need to send single item deletion calls.
 644          * These protocols do have a dedicated command for deleting a whole account.
 645          *
 646          * @param string $cmd     Notifier command
 647          * @param array  $owner   Sender of the post
 648          * @param string $network Receiver network
 649          * @return bool
 650          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 651          * @throws \ImagickException
 652          */
 653         private static function isRemovalActivity($cmd, $owner, $network)
 654         {
 655                 return ($cmd == Delivery::DELETION) && $owner['account_removed'] && in_array($network, [Protocol::ACTIVITYPUB, Protocol::DIASPORA]);
 656         }
 657
 658         /**
 659          * @param int    $self_user_id
 660          * @param int    $priority The priority the Notifier queue item was created with
 661          * @param string $created  The date the Notifier queue item was created on
 662          * @return bool
 663          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 664          * @throws \ImagickException
 665          */
 666         private static function notifySelfRemoval($self_user_id, $priority, $created)
 667         {
 668                 $owner = User::getOwnerDataById($self_user_id);
 669                 if (!$owner) {
 670                         return false;
 671                 }
 672
 673                 $contacts_stmt = DBA::select('contact', [], ['self' => false, 'uid' => $self_user_id]);
 674                 if (!DBA::isResult($contacts_stmt)) {
 675                         return false;
 676                 }
 677
 678                 while($contact = DBA::fetch($contacts_stmt)) {
 679                         Contact::terminateFriendship($owner, $contact, true);
 680                 }
 681                 DBA::close($contacts_stmt);
 682
 683                 $inboxes = ActivityPub\Transmitter::fetchTargetInboxesforUser(0);
 684                 foreach ($inboxes as $inbox) {
 685                         Logger::info('Account removal via ActivityPub', ['uid' => $self_user_id, 'inbox' => $inbox]);
 686                         Worker::add(['priority' => PRIORITY_NEGLIGIBLE, 'created' => $created, 'dont_fork' => true],
 687                                 'APDelivery', Delivery::REMOVAL, '', $inbox, $self_user_id);
 688                 }
 689
 690                 return true;
 691         }
 692
 693         /**
 694          * @param string $cmd
 695          * @param array  $target_item
 696          * @param array  $parent
 697          * @param array  $thr_parent
 698          * @param int    $priority The priority the Notifier queue item was created with
 699          * @param string $created  The date the Notifier queue item was created on
 700          * @return int The number of delivery tasks created
 701          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 702          * @throws \ImagickException
 703          */
 704         private static function activityPubDelivery($cmd, array $target_item, array $parent, array $thr_parent, $priority, $created, $owner)
 705         {
 706                 // Don't deliver via AP when the starting post is delivered via Diaspora
 707                 if ($parent['network'] == Protocol::DIASPORA) {
 708                         return 0;
 709                 }
 710
 711                 // Also don't deliver  when the direct thread parent was delivered via Diaspora
 712                 if ($thr_parent['network'] == Protocol::DIASPORA) {
 713                         return 0;
 714                 }
 715
 716                 $inboxes = [];
 717
 718                 $uid = $target_item['contact-uid'] ?: $target_item['uid'];
 719
 720                 if ($target_item['origin']) {
 721                         $inboxes = ActivityPub\Transmitter::fetchTargetInboxes($target_item, $uid);
 722                         Logger::log('Origin item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . ' will be distributed.', Logger::DEBUG);
 723                 } elseif (Item::isForumPost($target_item, $owner)) {
 724                         $inboxes = ActivityPub\Transmitter::fetchTargetInboxes($target_item, $uid, false, 0, true);
 725                         Logger::log('Forum item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . ' will be distributed.', Logger::DEBUG);
 726                 } elseif (!DBA::exists('conversation', ['item-uri' => $target_item['uri'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB])) {
 727                         Logger::log('Remote item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . ' is no AP post. It will not be distributed.', Logger::DEBUG);
 728                         return 0;
 729                 } elseif ($parent['origin']) {
 730                         // Remote items are transmitted via the personal inboxes.
 731                         // Doing so ensures that the dedicated receiver will get the message.
 732                         $inboxes = ActivityPub\Transmitter::fetchTargetInboxes($parent, $uid, true, $target_item['id']);
 733                         Logger::log('Remote item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . ' will be distributed.', Logger::DEBUG);
 734                 }
 735
 736                 if (empty($inboxes)) {
 737                         Logger::log('No inboxes found for item ' . $target_item['id'] . ' with URL ' . $target_item['uri'] . '. It will not be distributed.', Logger::DEBUG);
 738                         return 0;
 739                 }
 740
 741                 // Fill the item cache
 742                 ActivityPub\Transmitter::createCachedActivityFromItem($target_item['id'], true);
 743
 744                 $delivery_queue_count = 0;
 745
 746                 foreach ($inboxes as $inbox) {
 747                         Logger::info('Delivery via ActivityPub', ['cmd' => $cmd, 'id' => $target_item['id'], 'inbox' => $inbox]);
 748
 749                         if (Worker::add(['priority' => $priority, 'created' => $created, 'dont_fork' => true],
 750                                         'APDelivery', $cmd, $target_item['id'], $inbox, $uid)) {
 751                                 $delivery_queue_count++;
 752                         }
 753                 }
 754
 755                 return $delivery_queue_count;
 756         }
 757 }