src/Worker/Delivery.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2020, Friendica
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Worker;
  23
  24 use Friendica\Core\Logger;
  25 use Friendica\Core\Protocol;
  26 use Friendica\Database\DBA;
  27 use Friendica\DI;
  28 use Friendica\Model;
  29 use Friendica\Protocol\DFRN;
  30 use Friendica\Protocol\Diaspora;
  31 use Friendica\Protocol\Email;
  32 use Friendica\Protocol\Activity;
  33 use Friendica\Util\Strings;
  34 use Friendica\Util\Network;
  35 use Friendica\Core\Worker;
  36 use Friendica\Model\FContact;
  37 use Friendica\Protocol\Relay;
  38
  39 class Delivery
  40 {
  41         const MAIL          = 'mail';
  42         const SUGGESTION    = 'suggest';
  43         const RELOCATION    = 'relocate';
  44         const DELETION      = 'drop';
  45         const POST          = 'wall-new';
  46         const POKE          = 'poke';
  47         const UPLINK        = 'uplink';
  48         const REMOVAL       = 'removeme';
  49         const PROFILEUPDATE = 'profileupdate';
  50
  51         public static function execute($cmd, $target_id, $contact_id)
  52         {
  53                 Logger::info('Invoked', ['cmd' => $cmd, 'target' => $target_id, 'contact' => $contact_id]);
  54
  55                 $top_level = false;
  56                 $followup = false;
  57                 $public_message = false;
  58
  59                 $items = [];
  60                 if ($cmd == self::MAIL) {
  61                         $target_item = DBA::selectFirst('mail', [], ['id' => $target_id]);
  62                         if (!DBA::isResult($target_item)) {
  63                                 return;
  64                         }
  65                         $uid = $target_item['uid'];
  66                 } elseif ($cmd == self::SUGGESTION) {
  67                         $target_item = DBA::selectFirst('fsuggest', [], ['id' => $target_id]);
  68                         if (!DBA::isResult($target_item)) {
  69                                 return;
  70                         }
  71                         $uid = $target_item['uid'];
  72                 } elseif ($cmd == self::RELOCATION) {
  73                         $uid = $target_id;
  74                         $target_item = [];
  75                 } else {
  76                         $item = Model\Item::selectFirst(['parent'], ['id' => $target_id]);
  77                         if (!DBA::isResult($item) || empty($item['parent'])) {
  78                                 return;
  79                         }
  80                         $parent_id = intval($item['parent']);
  81
  82                         $condition = ['id' => [$target_id, $parent_id], 'visible' => true, 'moderated' => false];
  83                         $params = ['order' => ['id']];
  84                         $itemdata = Model\Item::select([], $condition, $params);
  85
  86                         while ($item = Model\Item::fetch($itemdata)) {
  87                                 if ($item['verb'] == Activity::ANNOUNCE) {
  88                                         continue;
  89                                 }
  90
  91                                 if ($item['id'] == $parent_id) {
  92                                         $parent = $item;
  93                                 }
  94                                 if ($item['id'] == $target_id) {
  95                                         $target_item = $item;
  96                                 }
  97                                 $items[] = $item;
  98                         }
  99                         DBA::close($itemdata);
 100
 101                         if (empty($target_item)) {
 102                                 Logger::log('Item ' . $target_id . "wasn't found. Quitting here.");
 103                                 return;
 104                         }
 105
 106                         if (empty($parent)) {
 107                                 Logger::log('Parent ' . $parent_id . ' for item ' . $target_id . "wasn't found. Quitting here.");
 108                                 self::setFailedQueue($cmd, $target_item);
 109                                 return;
 110                         }
 111
 112                         if (!empty($target_item['contact-uid'])) {
 113                                 $uid = $target_item['contact-uid'];
 114                         } elseif (!empty($target_item['uid'])) {
 115                                 $uid = $target_item['uid'];
 116                         } else {
 117                                 Logger::log('Only public users for item ' . $target_id, Logger::DEBUG);
 118                                 self::setFailedQueue($cmd, $target_item);
 119                                 return;
 120                         }
 121
 122                         $condition = ['uri' => $target_item['thr-parent'], 'uid' => $target_item['uid']];
 123                         $thr_parent = Model\Item::selectFirst(['network', 'object'], $condition);
 124                         if (!DBA::isResult($thr_parent)) {
 125                                 // Shouldn't happen. But when this does, we just take the parent as thread parent.
 126                                 // That's totally okay for what we use this variable here.
 127                                 $thr_parent = $parent;
 128                         }
 129
 130                         if (!empty($contact_id) && Model\Contact::isArchived($contact_id)) {
 131                                 Logger::info('Contact is archived', ['id' => $contact_id, 'cmd' => $cmd, 'item' => $target_item['id']]);
 132                                 self::setFailedQueue($cmd, $target_item);
 133                                 return;
 134                         }
 135
 136                         // avoid race condition with deleting entries
 137                         if ($items[0]['deleted']) {
 138                                 foreach ($items as $item) {
 139                                         $item['deleted'] = 1;
 140                                 }
 141                         }
 142
 143                         // When commenting too fast after delivery, a post wasn't recognized as top level post.
 144                         // The count then showed more than one entry. The additional check should help.
 145                         // The check for the "count" should be superfluous, but I'm not totally sure by now, so we keep it.
 146                         if ((($parent['id'] == $target_id) || (count($items) == 1)) && ($parent['uri'] === $parent['parent-uri'])) {
 147                                 Logger::log('Top level post');
 148                                 $top_level = true;
 149                         }
 150
 151                         // This is IMPORTANT!!!!
 152
 153                         // We will only send a "notify owner to relay" or followup message if the referenced post
 154                         // originated on our system by virtue of having our hostname somewhere
 155                         // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
 156                         // if $parent['wall'] == 1 we will already have the parent message in our array
 157                         // and we will relay the whole lot.
 158
 159                         $localhost = DI::baseUrl()->getHostname();
 160                         if (strpos($localhost, ':')) {
 161                                 $localhost = substr($localhost, 0, strpos($localhost, ':'));
 162                         }
 163                         /**
 164                          *
 165                          * Be VERY CAREFUL if you make any changes to the following line. Seemingly innocuous changes
 166                          * have been known to cause runaway conditions which affected several servers, along with
 167                          * permissions issues.
 168                          *
 169                          */
 170
 171                         if (!$top_level && ($parent['wall'] == 0) && stristr($target_item['uri'], $localhost)) {
 172                                 Logger::log('Followup ' . $target_item["guid"], Logger::DEBUG);
 173                                 // local followup to remote post
 174                                 $followup = true;
 175                         }
 176
 177                         if (empty($parent['allow_cid'])
 178                                 && empty($parent['allow_gid'])
 179                                 && empty($parent['deny_cid'])
 180                                 && empty($parent['deny_gid'])
 181                                 && ($parent["private"] != Model\Item::PRIVATE)) {
 182                                 $public_message = true;
 183                         }
 184                 }
 185
 186                 if (empty($items)) {
 187                         Logger::log('No delivery data for  ' . $cmd . ' - Item ID: ' .$target_id . ' - Contact ID: ' . $contact_id);
 188                 }
 189
 190                 $owner = Model\User::getOwnerDataById($uid);
 191                 if (!DBA::isResult($owner)) {
 192                         self::setFailedQueue($cmd, $target_item);
 193                         return;
 194                 }
 195
 196                 // We don't deliver our items to blocked, archived or pending contacts, and not to ourselves either
 197                 $contact = DBA::selectFirst('contact', [],
 198                         ['id' => $contact_id, 'archive' => false, 'blocked' => false, 'pending' => false, 'self' => false]
 199                 );
 200                 if (!DBA::isResult($contact)) {
 201                         self::setFailedQueue($cmd, $target_item);
 202                         return;
 203                 }
 204
 205                 if (Network::isUrlBlocked($contact['url'])) {
 206                         self::setFailedQueue($cmd, $target_item);
 207                         return;
 208                 }
 209
 210                 // Transmit via Diaspora if the thread had started as Diaspora post.
 211                 // Also transmit via Diaspora if this is a direct answer to a Diaspora comment.
 212                 // This is done since the uri wouldn't match (Diaspora doesn't transmit it)
 213                 if (!empty($parent) && !empty($thr_parent) && in_array(Protocol::DIASPORA, [$parent['network'], $thr_parent['network']])) {
 214                         $contact['network'] = Protocol::DIASPORA;
 215                 }
 216
 217                 // Ensure that local contacts are delivered locally
 218                 if (Model\Contact::isLocal($contact['url'])) {
 219                         $contact['network'] = Protocol::DFRN;
 220                 }
 221
 222                 Logger::notice('Delivering', ['cmd' => $cmd, 'target' => $target_id, 'followup' => $followup, 'network' => $contact['network']]);
 223
 224                 switch ($contact['network']) {
 225                         case Protocol::DFRN:
 226                                 self::deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 227                                 break;
 228
 229                         case Protocol::DIASPORA:
 230                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 231                                 break;
 232
 233                         case Protocol::MAIL:
 234                                 self::deliverMail($cmd, $contact, $owner, $target_item, $thr_parent);
 235                                 break;
 236
 237                         default:
 238                                 break;
 239                 }
 240
 241                 return;
 242         }
 243
 244         /**
 245          * Increased the "failed" counter in the item delivery data
 246          *
 247          * @param string $cmd  Command
 248          * @param array  $item Item array
 249          */
 250         private static function setFailedQueue(string $cmd, array $item)
 251         {
 252                 if (!in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 253                         return;
 254                 }
 255
 256                 Model\Post\DeliveryData::incrementQueueFailed($item['uri-id'] ?? $item['id']);
 257         }
 258
 259         /**
 260          * Deliver content via DFRN
 261          *
 262          * @param string  $cmd            Command
 263          * @param array   $contact        Contact record of the receiver
 264          * @param array   $owner          Owner record of the sender
 265          * @param array   $items          Item record of the content and the parent
 266          * @param array   $target_item    Item record of the content
 267          * @param boolean $public_message Is the content public?
 268          * @param boolean $top_level      Is it a thread starter?
 269          * @param boolean $followup       Is it an answer to a remote post?
 270          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 271          * @throws \ImagickException
 272          */
 273         private static function deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 274         {
 275                 // Transmit Diaspora reshares via Diaspora if the Friendica contact support Diaspora
 276                 if (Diaspora::isReshare($target_item['body']) && !empty(FContact::getByURL($contact['addr'], false))) {
 277                         Logger::info('Reshare will be transmitted via Diaspora', ['url' => $contact['url'], 'guid' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
 278                         self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 279                         return;
 280                 }
 281
 282                 Logger::info('Deliver ' . (($target_item['guid'] ?? '') ?: $target_item['id']) . ' via DFRN to ' . (($contact['addr'] ?? '') ?: $contact['url']));
 283
 284                 if ($cmd == self::MAIL) {
 285                         $item = $target_item;
 286                         $item['body'] = Model\Item::fixPrivatePhotos($item['body'], $owner['uid'], null, $item['contact-id']);
 287                         $atom = DFRN::mail($item, $owner);
 288                 } elseif ($cmd == self::SUGGESTION) {
 289                         $item = $target_item;
 290                         $atom = DFRN::fsuggest($item, $owner);
 291                         DBA::delete('fsuggest', ['id' => $item['id']]);
 292                 } elseif ($cmd == self::RELOCATION) {
 293                         $atom = DFRN::relocate($owner, $owner['uid']);
 294                 } elseif ($followup) {
 295                         $msgitems = [$target_item];
 296                         $atom = DFRN::entries($msgitems, $owner);
 297                 } else {
 298                         $msgitems = [];
 299                         foreach ($items as $item) {
 300                                 // Only add the parent when we don't delete other items.
 301                                 if (($target_item['id'] == $item['id']) || ($cmd != self::DELETION)) {
 302                                         $item["entry:comment-allow"] = true;
 303                                         $item["entry:cid"] = ($top_level ? $contact['id'] : 0);
 304                                         $msgitems[] = $item;
 305                                 }
 306                         }
 307                         $atom = DFRN::entries($msgitems, $owner);
 308                 }
 309
 310                 Logger::debug('Notifier entry: ' . $contact["url"] . ' ' . (($target_item['guid'] ?? '') ?: $target_item['id']) . ' entry: ' . $atom);
 311
 312                 // perform local delivery if we are on the same site
 313                 if (Model\Contact::isLocal($contact['url'])) {
 314                         $condition = ['nurl' => Strings::normaliseLink($contact['url']), 'self' => true];
 315                         $target_self = DBA::selectFirst('contact', ['uid'], $condition);
 316                         if (!DBA::isResult($target_self)) {
 317                                 return;
 318                         }
 319                         $target_uid = $target_self['uid'];
 320
 321                         // Check if the user has got this contact
 322                         $cid = Model\Contact::getIdForURL($owner['url'], $target_uid);
 323                         if (!$cid) {
 324                                 // Otherwise there should be a public contact
 325                                 $cid = Model\Contact::getIdForURL($owner['url']);
 326                                 if (!$cid) {
 327                                         return;
 328                                 }
 329                         }
 330
 331                         $target_importer = DFRN::getImporter($cid, $target_uid);
 332                         if (empty($target_importer)) {
 333                                 // This should never happen
 334                                 return;
 335                         }
 336
 337                         DFRN::import($atom, $target_importer);
 338
 339                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 340                                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Model\Post\DeliveryData::DFRN);
 341                         }
 342
 343                         return;
 344                 }
 345
 346                 $protocol = Model\Post\DeliveryData::DFRN;
 347
 348                 // We don't have a relationship with contacts on a public post.
 349                 // Se we transmit with the new method and via Diaspora as a fallback
 350                 if (!empty($items) && (($items[0]['uid'] == 0) || ($contact['uid'] == 0))) {
 351                         // Transmit in public if it's a relay post
 352                         $public_dfrn = ($contact['contact-type'] == Model\Contact::TYPE_RELAY);
 353
 354                         $deliver_status = DFRN::transmit($owner, $contact, $atom, $public_dfrn);
 355
 356                         // We never spool failed relay deliveries
 357                         if ($public_dfrn) {
 358                                 Logger::info('Relay delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
 359
 360                                 if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 361                                         if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 362                                                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], $protocol);
 363                                         } else {
 364                                                 Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
 365                                         }
 366                                 }
 367                                 return;
 368                         }
 369
 370                         if (($deliver_status < 200) || ($deliver_status > 299)) {
 371                                 // Transmit via Diaspora if not possible via Friendica
 372                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 373                                 return;
 374                         }
 375                 } elseif ($cmd != self::RELOCATION) {
 376                         // DFRN payload over Diaspora transport layer
 377                         $deliver_status = DFRN::transmit($owner, $contact, $atom);
 378                         if ($deliver_status < 200) {
 379                                 // Legacy DFRN
 380                                 $deliver_status = DFRN::deliver($owner, $contact, $atom);
 381                                 $protocol = Model\Post\DeliveryData::LEGACY_DFRN;
 382                         }
 383                 } else {
 384                         $deliver_status = DFRN::deliver($owner, $contact, $atom);
 385                         $protocol = Model\Post\DeliveryData::LEGACY_DFRN;
 386                 }
 387
 388                 Logger::info('DFRN Delivery', ['cmd' => $cmd, 'url' => $contact['url'], 'guid' => ($target_item['guid'] ?? '') ?: $target_item['id'], 'return' => $deliver_status]);
 389
 390                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 391                         // We successfully delivered a message, the contact is alive
 392                         Model\Contact::unmarkForArchival($contact);
 393
 394                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 395                                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], $protocol);
 396                         }
 397                 } else {
 398                         // The message could not be delivered. We mark the contact as "dead"
 399                         Model\Contact::markForArchival($contact);
 400
 401                         Logger::info('Delivery failed: defer message', ['id' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
 402                         if (!Worker::defer() && in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 403                                 Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
 404                         }
 405                 }
 406         }
 407
 408         /**
 409          * Deliver content via Diaspora
 410          *
 411          * @param string  $cmd            Command
 412          * @param array   $contact        Contact record of the receiver
 413          * @param array   $owner          Owner record of the sender
 414          * @param array   $items          Item record of the content and the parent
 415          * @param array   $target_item    Item record of the content
 416          * @param boolean $public_message Is the content public?
 417          * @param boolean $top_level      Is it a thread starter?
 418          * @param boolean $followup       Is it an answer to a remote post?
 419          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 420          * @throws \ImagickException
 421          */
 422         private static function deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 423         {
 424                 // We don't treat Forum posts as "wall-to-wall" to be able to post them via Diaspora
 425                 $walltowall = $top_level && ($owner['id'] != $items[0]['contact-id']) & ($owner['account-type'] != Model\User::ACCOUNT_TYPE_COMMUNITY);
 426
 427                 if ($public_message) {
 428                         $loc = 'public batch ' . $contact['batch'];
 429                 } else {
 430                         $loc = $contact['addr'];
 431                 }
 432
 433                 Logger::notice('Deliver via Diaspora', ['target' => $target_item['id'], 'guid' => $target_item['guid'], 'to' => $loc]);
 434
 435                 if (DI::config()->get('system', 'dfrn_only') || !DI::config()->get('system', 'diaspora_enabled')) {
 436                         return;
 437                 }
 438
 439                 if ($cmd == self::MAIL) {
 440                         Diaspora::sendMail($target_item, $owner, $contact);
 441                         return;
 442                 }
 443
 444                 if ($cmd == self::SUGGESTION) {
 445                         return;
 446                 }
 447
 448                 if (!$contact['pubkey'] && !$public_message) {
 449                         return;
 450                 }
 451
 452                 if ($cmd == self::RELOCATION) {
 453                         $deliver_status = Diaspora::sendAccountMigration($owner, $contact, $owner['uid']);
 454                 } elseif ($target_item['deleted'] && (($target_item['uri'] === $target_item['parent-uri']) || $followup)) {
 455                         // top-level retraction
 456                         Logger::log('diaspora retract: ' . $loc);
 457                         $deliver_status = Diaspora::sendRetraction($target_item, $owner, $contact, $public_message);
 458                 } elseif ($followup) {
 459                         // send comments and likes to owner to relay
 460                         Logger::log('diaspora followup: ' . $loc);
 461                         $deliver_status = Diaspora::sendFollowup($target_item, $owner, $contact, $public_message);
 462                 } elseif ($target_item['uri'] !== $target_item['parent-uri']) {
 463                         // we are the relay - send comments, likes and relayable_retractions to our conversants
 464                         Logger::log('diaspora relay: ' . $loc);
 465                         $deliver_status = Diaspora::sendRelay($target_item, $owner, $contact, $public_message);
 466                 } elseif ($top_level && !$walltowall) {
 467                         // currently no workable solution for sending walltowall
 468                         Logger::log('diaspora status: ' . $loc);
 469                         $deliver_status = Diaspora::sendStatus($target_item, $owner, $contact, $public_message);
 470                 } else {
 471                         Logger::log('Unknown mode ' . $cmd . ' for ' . $loc);
 472                         return;
 473                 }
 474
 475                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 476                         // We successfully delivered a message, the contact is alive
 477                         Model\Contact::unmarkForArchival($contact);
 478
 479                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 480                                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Model\Post\DeliveryData::DIASPORA);
 481                         }
 482                 } else {
 483                         // The message could not be delivered. We mark the contact as "dead"
 484                         Model\Contact::markForArchival($contact);
 485
 486                         // When it is delivered to the public endpoint, we do mark the relay contact for archival as well
 487                         if ($public_message) {
 488                                 Relay::markForArchival($contact);
 489                         }
 490
 491                         if (empty($contact['contact-type']) || ($contact['contact-type'] != Model\Contact::TYPE_RELAY)) {
 492                                 Logger::info('Delivery failed: defer message', ['id' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
 493                                 // defer message for redelivery
 494                                 if (!Worker::defer() && in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 495                                         Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
 496                                 }
 497                         } elseif (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 498                                 Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
 499                         }
 500                 }
 501         }
 502
 503         /**
 504          * Deliver content via mail
 505          *
 506          * @param string $cmd         Command
 507          * @param array  $contact     Contact record of the receiver
 508          * @param array  $owner       Owner record of the sender
 509          * @param array  $target_item Item record of the content
 510          * @param array  $thr_parent  Item record of the direct parent in the thread
 511          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 512          * @throws \ImagickException
 513          */
 514         private static function deliverMail($cmd, $contact, $owner, $target_item, $thr_parent)
 515         {
 516                 if (DI::config()->get('system','dfrn_only')) {
 517                         return;
 518                 }
 519
 520                 $addr = $contact['addr'];
 521                 if (!strlen($addr)) {
 522                         return;
 523                 }
 524
 525                 if (!in_array($cmd, [self::POST, self::POKE])) {
 526                         return;
 527                 }
 528
 529                 if ($target_item['verb'] != Activity::POST) {
 530                         return;
 531                 }
 532
 533                 if (!empty($thr_parent['object'])) {
 534                         $data = json_decode($thr_parent['object'], true);
 535                         if (!empty($data['reply_to'])) {
 536                                 $addr = $data['reply_to'][0]['mailbox'] . '@' . $data['reply_to'][0]['host'];
 537                                 Logger::info('Use "reply-to" address of the thread parent', ['addr' => $addr]);
 538                         } elseif (!empty($data['from'])) {
 539                                 $addr = $data['from'][0]['mailbox'] . '@' . $data['from'][0]['host'];
 540                                 Logger::info('Use "from" address of the thread parent', ['addr' => $addr]);
 541                         }
 542                 }
 543
 544                 $local_user = DBA::selectFirst('user', [], ['uid' => $owner['uid']]);
 545                 if (!DBA::isResult($local_user)) {
 546                         return;
 547                 }
 548
 549                 Logger::info('About to deliver via mail', ['guid' => $target_item['guid'], 'to' => $addr]);
 550
 551                 $reply_to = '';
 552                 $mailacct = DBA::selectFirst('mailacct', ['reply_to'], ['uid' => $owner['uid']]);
 553                 if (DBA::isResult($mailacct) && !empty($mailacct['reply_to'])) {
 554                         $reply_to = $mailacct['reply_to'];
 555                 }
 556
 557                 $subject  = ($target_item['title'] ? Email::encodeHeader($target_item['title'], 'UTF-8') : DI::l10n()->t("\x28no subject\x29"));
 558
 559                 // only expose our real email address to true friends
 560
 561                 if (($contact['rel'] == Model\Contact::FRIEND) && !$contact['blocked']) {
 562                         if ($reply_to) {
 563                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $reply_to . '>' . "\n";
 564                                 $headers .= 'Sender: ' . $local_user['email'] . "\n";
 565                         } else {
 566                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $local_user['email'] . '>' . "\n";
 567                         }
 568                 } else {
 569                         $sender = DI::config()->get('config', 'sender_email', 'noreply@' . DI::baseUrl()->getHostname());
 570                         $headers  = 'From: '. Email::encodeHeader($local_user['username'], 'UTF-8') . ' <' . $sender . '>' . "\n";
 571                 }
 572
 573                 $headers .= 'Message-Id: <' . Email::iri2msgid($target_item['uri']) . '>' . "\n";
 574
 575                 if ($target_item['uri'] !== $target_item['parent-uri']) {
 576                         $headers .= 'References: <' . Email::iri2msgid($target_item['parent-uri']) . '>';
 577
 578                         // Export more references on deeper nested threads
 579                         if (($target_item['thr-parent'] != '') && ($target_item['thr-parent'] != $target_item['parent-uri'])) {
 580                                 $headers .= ' <' . Email::iri2msgid($target_item['thr-parent']) . '>';
 581                         }
 582
 583                         $headers .= "\n";
 584
 585                         if (empty($target_item['title'])) {
 586                                 $condition = ['uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 587                                 $title = Model\Item::selectFirst(['title'], $condition);
 588
 589                                 if (DBA::isResult($title) && ($title['title'] != '')) {
 590                                         $subject = $title['title'];
 591                                 } else {
 592                                         $condition = ['parent-uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 593                                         $title = Model\Item::selectFirst(['title'], $condition);
 594
 595                                         if (DBA::isResult($title) && ($title['title'] != '')) {
 596                                                 $subject = $title['title'];
 597                                         }
 598                                 }
 599                         }
 600
 601                         if (strncasecmp($subject, 'RE:', 3)) {
 602                                 $subject = 'Re: ' . $subject;
 603                         }
 604                 }
 605
 606                 Email::send($addr, $subject, $headers, $target_item);
 607
 608                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Model\Post\DeliveryData::MAIL);
 609
 610                 Logger::info('Delivered via mail', ['guid' => $target_item['guid'], 'to' => $addr, 'subject' => $subject]);
 611         }
 612 }