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\Conversation;
  37 use Friendica\Model\FContact;
  38 use Friendica\Protocol\Relay;
  39
  40 class Delivery
  41 {
  42         const MAIL          = 'mail';
  43         const SUGGESTION    = 'suggest';
  44         const RELOCATION    = 'relocate';
  45         const DELETION      = 'drop';
  46         const POST          = 'wall-new';
  47         const POKE          = 'poke';
  48         const UPLINK        = 'uplink';
  49         const REMOVAL       = 'removeme';
  50         const PROFILEUPDATE = 'profileupdate';
  51
  52         public static function execute($cmd, $target_id, $contact_id)
  53         {
  54                 Logger::info('Invoked', ['cmd' => $cmd, 'target' => $target_id, 'contact' => $contact_id]);
  55
  56                 $top_level = false;
  57                 $followup = false;
  58                 $public_message = false;
  59
  60                 $items = [];
  61                 if ($cmd == self::MAIL) {
  62                         $target_item = DBA::selectFirst('mail', [], ['id' => $target_id]);
  63                         if (!DBA::isResult($target_item)) {
  64                                 return;
  65                         }
  66                         $uid = $target_item['uid'];
  67                 } elseif ($cmd == self::SUGGESTION) {
  68                         $target_item = DBA::selectFirst('fsuggest', [], ['id' => $target_id]);
  69                         if (!DBA::isResult($target_item)) {
  70                                 return;
  71                         }
  72                         $uid = $target_item['uid'];
  73                 } elseif ($cmd == self::RELOCATION) {
  74                         $uid = $target_id;
  75                         $target_item = [];
  76                 } else {
  77                         $item = Model\Item::selectFirst(['parent'], ['id' => $target_id]);
  78                         if (!DBA::isResult($item) || empty($item['parent'])) {
  79                                 return;
  80                         }
  81                         $parent_id = intval($item['parent']);
  82
  83                         $condition = ['id' => [$target_id, $parent_id], 'visible' => true, 'moderated' => false];
  84                         $params = ['order' => ['id']];
  85                         $itemdata = Model\Item::select([], $condition, $params);
  86
  87                         while ($item = Model\Item::fetch($itemdata)) {
  88                                 if ($item['verb'] == Activity::ANNOUNCE) {
  89                                         continue;
  90                                 }
  91
  92                                 if ($item['id'] == $parent_id) {
  93                                         $parent = $item;
  94                                 }
  95                                 if ($item['id'] == $target_id) {
  96                                         $target_item = $item;
  97                                 }
  98                                 $items[] = $item;
  99                         }
 100                         DBA::close($itemdata);
 101
 102                         if (empty($target_item)) {
 103                                 Logger::log('Item ' . $target_id . "wasn't found. Quitting here.");
 104                                 return;
 105                         }
 106
 107                         if (empty($parent)) {
 108                                 Logger::log('Parent ' . $parent_id . ' for item ' . $target_id . "wasn't found. Quitting here.");
 109                                 self::setFailedQueue($cmd, $target_item);
 110                                 return;
 111                         }
 112
 113                         if (!empty($target_item['contact-uid'])) {
 114                                 $uid = $target_item['contact-uid'];
 115                         } elseif (!empty($target_item['uid'])) {
 116                                 $uid = $target_item['uid'];
 117                         } else {
 118                                 Logger::log('Only public users for item ' . $target_id, Logger::DEBUG);
 119                                 self::setFailedQueue($cmd, $target_item);
 120                                 return;
 121                         }
 122
 123                         $condition = ['uri' => $target_item['thr-parent'], 'uid' => $target_item['uid']];
 124                         $thr_parent = Model\Item::selectFirst(['network', 'object'], $condition);
 125                         if (!DBA::isResult($thr_parent)) {
 126                                 // Shouldn't happen. But when this does, we just take the parent as thread parent.
 127                                 // That's totally okay for what we use this variable here.
 128                                 $thr_parent = $parent;
 129                         }
 130
 131                         if (!empty($contact_id) && Model\Contact::isArchived($contact_id)) {
 132                                 Logger::info('Contact is archived', ['id' => $contact_id, 'cmd' => $cmd, 'item' => $target_item['id']]);
 133                                 self::setFailedQueue($cmd, $target_item);
 134                                 return;
 135                         }
 136
 137                         // avoid race condition with deleting entries
 138                         if ($items[0]['deleted']) {
 139                                 foreach ($items as $item) {
 140                                         $item['deleted'] = 1;
 141                                 }
 142                         }
 143
 144                         // When commenting too fast after delivery, a post wasn't recognized as top level post.
 145                         // The count then showed more than one entry. The additional check should help.
 146                         // The check for the "count" should be superfluous, but I'm not totally sure by now, so we keep it.
 147                         if ((($parent['id'] == $target_id) || (count($items) == 1)) && ($parent['uri'] === $parent['parent-uri'])) {
 148                                 Logger::log('Top level post');
 149                                 $top_level = true;
 150                         }
 151
 152                         // This is IMPORTANT!!!!
 153
 154                         // We will only send a "notify owner to relay" or followup message if the referenced post
 155                         // originated on our system by virtue of having our hostname somewhere
 156                         // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
 157                         // if $parent['wall'] == 1 we will already have the parent message in our array
 158                         // and we will relay the whole lot.
 159
 160                         $localhost = DI::baseUrl()->getHostname();
 161                         if (strpos($localhost, ':')) {
 162                                 $localhost = substr($localhost, 0, strpos($localhost, ':'));
 163                         }
 164                         /**
 165                          *
 166                          * Be VERY CAREFUL if you make any changes to the following line. Seemingly innocuous changes
 167                          * have been known to cause runaway conditions which affected several servers, along with
 168                          * permissions issues.
 169                          *
 170                          */
 171
 172                         if (!$top_level && ($parent['wall'] == 0) && stristr($target_item['uri'], $localhost)) {
 173                                 Logger::log('Followup ' . $target_item["guid"], Logger::DEBUG);
 174                                 // local followup to remote post
 175                                 $followup = true;
 176                         }
 177
 178                         if (empty($parent['allow_cid'])
 179                                 && empty($parent['allow_gid'])
 180                                 && empty($parent['deny_cid'])
 181                                 && empty($parent['deny_gid'])
 182                                 && ($parent["private"] != Model\Item::PRIVATE)) {
 183                                 $public_message = true;
 184                         }
 185                 }
 186
 187                 if (empty($items)) {
 188                         Logger::log('No delivery data for  ' . $cmd . ' - Item ID: ' .$target_id . ' - Contact ID: ' . $contact_id);
 189                 }
 190
 191                 $owner = Model\User::getOwnerDataById($uid);
 192                 if (!DBA::isResult($owner)) {
 193                         self::setFailedQueue($cmd, $target_item);
 194                         return;
 195                 }
 196
 197                 // We don't deliver our items to blocked, archived or pending contacts, and not to ourselves either
 198                 $contact = DBA::selectFirst('contact', [],
 199                         ['id' => $contact_id, 'archive' => false, 'blocked' => false, 'pending' => false, 'self' => false]
 200                 );
 201                 if (!DBA::isResult($contact)) {
 202                         self::setFailedQueue($cmd, $target_item);
 203                         return;
 204                 }
 205
 206                 if (Network::isUrlBlocked($contact['url'])) {
 207                         self::setFailedQueue($cmd, $target_item);
 208                         return;
 209                 }
 210
 211                 // Transmit via Diaspora if the thread had started as Diaspora post.
 212                 // Also transmit via Diaspora if this is a direct answer to a Diaspora comment.
 213                 // This is done since the uri wouldn't match (Diaspora doesn't transmit it)
 214                 if (!empty($parent) && !empty($thr_parent) && in_array(Protocol::DIASPORA, [$parent['network'], $thr_parent['network']])) {
 215                         $contact['network'] = Protocol::DIASPORA;
 216                 }
 217
 218                 // Ensure that local contacts are delivered locally
 219                 if (Model\Contact::isLocal($contact['url'])) {
 220                         $contact['network'] = Protocol::DFRN;
 221                 }
 222
 223                 Logger::notice('Delivering', ['cmd' => $cmd, 'target' => $target_id, 'followup' => $followup, 'network' => $contact['network']]);
 224
 225                 switch ($contact['network']) {
 226                         case Protocol::DFRN:
 227                                 self::deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 228                                 break;
 229
 230                         case Protocol::DIASPORA:
 231                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 232                                 break;
 233
 234                         case Protocol::MAIL:
 235                                 self::deliverMail($cmd, $contact, $owner, $target_item, $thr_parent);
 236                                 break;
 237
 238                         default:
 239                                 break;
 240                 }
 241
 242                 return;
 243         }
 244
 245         /**
 246          * Increased the "failed" counter in the item delivery data
 247          *
 248          * @param string $cmd  Command
 249          * @param array  $item Item array
 250          */
 251         private static function setFailedQueue(string $cmd, array $item)
 252         {
 253                 if (!in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 254                         return;
 255                 }
 256
 257                 Model\Post\DeliveryData::incrementQueueFailed($item['uri-id'] ?? $item['id']);
 258         }
 259
 260         /**
 261          * Deliver content via DFRN
 262          *
 263          * @param string  $cmd            Command
 264          * @param array   $contact        Contact record of the receiver
 265          * @param array   $owner          Owner record of the sender
 266          * @param array   $items          Item record of the content and the parent
 267          * @param array   $target_item    Item record of the content
 268          * @param boolean $public_message Is the content public?
 269          * @param boolean $top_level      Is it a thread starter?
 270          * @param boolean $followup       Is it an answer to a remote post?
 271          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 272          * @throws \ImagickException
 273          */
 274         private static function deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 275         {
 276                 // Transmit Diaspora reshares via Diaspora if the Friendica contact support Diaspora
 277                 if (Diaspora::isReshare($target_item['body']) && !empty(FContact::getByURL($contact['addr'], false))) {
 278                         Logger::info('Reshare will be transmitted via Diaspora', ['url' => $contact['url'], 'guid' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
 279                         self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 280                         return;
 281                 }
 282
 283                 Logger::info('Deliver ' . (($target_item['guid'] ?? '') ?: $target_item['id']) . ' via DFRN to ' . (($contact['addr'] ?? '') ?: $contact['url']));
 284
 285                 if ($cmd == self::MAIL) {
 286                         $item = $target_item;
 287                         $item['body'] = Model\Item::fixPrivatePhotos($item['body'], $owner['uid'], null, $item['contact-id']);
 288                         $atom = DFRN::mail($item, $owner);
 289                 } elseif ($cmd == self::SUGGESTION) {
 290                         $item = $target_item;
 291                         $atom = DFRN::fsuggest($item, $owner);
 292                         DBA::delete('fsuggest', ['id' => $item['id']]);
 293                 } elseif ($cmd == self::RELOCATION) {
 294                         $atom = DFRN::relocate($owner, $owner['uid']);
 295                 } elseif ($followup) {
 296                         $msgitems = [$target_item];
 297                         $atom = DFRN::entries($msgitems, $owner);
 298                 } else {
 299                         $msgitems = [];
 300                         foreach ($items as $item) {
 301                                 // Only add the parent when we don't delete other items.
 302                                 if (($target_item['id'] == $item['id']) || ($cmd != self::DELETION)) {
 303                                         $item["entry:comment-allow"] = true;
 304                                         $item["entry:cid"] = ($top_level ? $contact['id'] : 0);
 305                                         $msgitems[] = $item;
 306                                 }
 307                         }
 308                         $atom = DFRN::entries($msgitems, $owner);
 309                 }
 310
 311                 Logger::debug('Notifier entry: ' . $contact["url"] . ' ' . (($target_item['guid'] ?? '') ?: $target_item['id']) . ' entry: ' . $atom);
 312
 313                 // perform local delivery if we are on the same site
 314                 if (Model\Contact::isLocal($contact['url'])) {
 315                         $condition = ['nurl' => Strings::normaliseLink($contact['url']), 'self' => true];
 316                         $target_self = DBA::selectFirst('contact', ['uid'], $condition);
 317                         if (!DBA::isResult($target_self)) {
 318                                 return;
 319                         }
 320                         $target_uid = $target_self['uid'];
 321
 322                         // Check if the user has got this contact
 323                         $cid = Model\Contact::getIdForURL($owner['url'], $target_uid);
 324                         if (!$cid) {
 325                                 // Otherwise there should be a public contact
 326                                 $cid = Model\Contact::getIdForURL($owner['url']);
 327                                 if (!$cid) {
 328                                         return;
 329                                 }
 330                         }
 331
 332                         $target_importer = DFRN::getImporter($cid, $target_uid);
 333                         if (empty($target_importer)) {
 334                                 // This should never happen
 335                                 return;
 336                         }
 337
 338                         DFRN::import($atom, $target_importer, false, Conversation::PARCEL_LOCAL_DFRN);
 339
 340                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 341                                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Model\Post\DeliveryData::DFRN);
 342                         }
 343
 344                         return;
 345                 }
 346
 347                 $protocol = Model\Post\DeliveryData::DFRN;
 348
 349                 // We don't have a relationship with contacts on a public post.
 350                 // Se we transmit with the new method and via Diaspora as a fallback
 351                 if (!empty($items) && (($items[0]['uid'] == 0) || ($contact['uid'] == 0))) {
 352                         // Transmit in public if it's a relay post
 353                         $public_dfrn = ($contact['contact-type'] == Model\Contact::TYPE_RELAY);
 354
 355                         $deliver_status = DFRN::transmit($owner, $contact, $atom, $public_dfrn);
 356
 357                         // We never spool failed relay deliveries
 358                         if ($public_dfrn) {
 359                                 Logger::info('Relay delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
 360
 361                                 if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 362                                         if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 363                                                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], $protocol);
 364                                         } else {
 365                                                 Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
 366                                         }
 367                                 }
 368                                 return;
 369                         }
 370
 371                         if (($deliver_status < 200) || ($deliver_status > 299)) {
 372                                 // Transmit via Diaspora if not possible via Friendica
 373                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 374                                 return;
 375                         }
 376                 } elseif ($cmd != self::RELOCATION) {
 377                         // DFRN payload over Diaspora transport layer
 378                         $deliver_status = DFRN::transmit($owner, $contact, $atom);
 379                         if ($deliver_status < 200) {
 380                                 // Legacy DFRN
 381                                 $deliver_status = DFRN::deliver($owner, $contact, $atom);
 382                                 $protocol = Model\Post\DeliveryData::LEGACY_DFRN;
 383                         }
 384                 } else {
 385                         $deliver_status = DFRN::deliver($owner, $contact, $atom);
 386                         $protocol = Model\Post\DeliveryData::LEGACY_DFRN;
 387                 }
 388
 389                 Logger::info('DFRN Delivery', ['cmd' => $cmd, 'url' => $contact['url'], 'guid' => ($target_item['guid'] ?? '') ?: $target_item['id'], 'return' => $deliver_status]);
 390
 391                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 392                         // We successfully delivered a message, the contact is alive
 393                         Model\Contact::unmarkForArchival($contact);
 394
 395                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 396                                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], $protocol);
 397                         }
 398                 } else {
 399                         // The message could not be delivered. We mark the contact as "dead"
 400                         Model\Contact::markForArchival($contact);
 401
 402                         Logger::info('Delivery failed: defer message', ['id' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
 403                         if (!Worker::defer() && in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 404                                 Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
 405                         }
 406                 }
 407         }
 408
 409         /**
 410          * Deliver content via Diaspora
 411          *
 412          * @param string  $cmd            Command
 413          * @param array   $contact        Contact record of the receiver
 414          * @param array   $owner          Owner record of the sender
 415          * @param array   $items          Item record of the content and the parent
 416          * @param array   $target_item    Item record of the content
 417          * @param boolean $public_message Is the content public?
 418          * @param boolean $top_level      Is it a thread starter?
 419          * @param boolean $followup       Is it an answer to a remote post?
 420          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 421          * @throws \ImagickException
 422          */
 423         private static function deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 424         {
 425                 // We don't treat Forum posts as "wall-to-wall" to be able to post them via Diaspora
 426                 $walltowall = $top_level && ($owner['id'] != $items[0]['contact-id']) & ($owner['account-type'] != Model\User::ACCOUNT_TYPE_COMMUNITY);
 427
 428                 if ($public_message) {
 429                         $loc = 'public batch ' . $contact['batch'];
 430                 } else {
 431                         $loc = $contact['addr'];
 432                 }
 433
 434                 Logger::notice('Deliver via Diaspora', ['target' => $target_item['id'], 'guid' => $target_item['guid'], 'to' => $loc]);
 435
 436                 if (DI::config()->get('system', 'dfrn_only') || !DI::config()->get('system', 'diaspora_enabled')) {
 437                         return;
 438                 }
 439
 440                 if ($cmd == self::MAIL) {
 441                         Diaspora::sendMail($target_item, $owner, $contact);
 442                         return;
 443                 }
 444
 445                 if ($cmd == self::SUGGESTION) {
 446                         return;
 447                 }
 448
 449                 if (!$contact['pubkey'] && !$public_message) {
 450                         return;
 451                 }
 452
 453                 if ($cmd == self::RELOCATION) {
 454                         $deliver_status = Diaspora::sendAccountMigration($owner, $contact, $owner['uid']);
 455                 } elseif ($target_item['deleted'] && (($target_item['uri'] === $target_item['parent-uri']) || $followup)) {
 456                         // top-level retraction
 457                         Logger::log('diaspora retract: ' . $loc);
 458                         $deliver_status = Diaspora::sendRetraction($target_item, $owner, $contact, $public_message);
 459                 } elseif ($followup) {
 460                         // send comments and likes to owner to relay
 461                         Logger::log('diaspora followup: ' . $loc);
 462                         $deliver_status = Diaspora::sendFollowup($target_item, $owner, $contact, $public_message);
 463                 } elseif ($target_item['uri'] !== $target_item['parent-uri']) {
 464                         // we are the relay - send comments, likes and relayable_retractions to our conversants
 465                         Logger::log('diaspora relay: ' . $loc);
 466                         $deliver_status = Diaspora::sendRelay($target_item, $owner, $contact, $public_message);
 467                 } elseif ($top_level && !$walltowall) {
 468                         // currently no workable solution for sending walltowall
 469                         Logger::log('diaspora status: ' . $loc);
 470                         $deliver_status = Diaspora::sendStatus($target_item, $owner, $contact, $public_message);
 471                 } else {
 472                         Logger::log('Unknown mode ' . $cmd . ' for ' . $loc);
 473                         return;
 474                 }
 475
 476                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 477                         // We successfully delivered a message, the contact is alive
 478                         Model\Contact::unmarkForArchival($contact);
 479
 480                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 481                                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Model\Post\DeliveryData::DIASPORA);
 482                         }
 483                 } else {
 484                         // The message could not be delivered. We mark the contact as "dead"
 485                         Model\Contact::markForArchival($contact);
 486
 487                         // When it is delivered to the public endpoint, we do mark the relay contact for archival as well
 488                         if ($public_message) {
 489                                 Relay::markForArchival($contact);
 490                         }
 491
 492                         if (empty($contact['contact-type']) || ($contact['contact-type'] != Model\Contact::TYPE_RELAY)) {
 493                                 Logger::info('Delivery failed: defer message', ['id' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
 494                                 // defer message for redelivery
 495                                 if (!Worker::defer() && in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 496                                         Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
 497                                 }
 498                         } elseif (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 499                                 Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
 500                         }
 501                 }
 502         }
 503
 504         /**
 505          * Deliver content via mail
 506          *
 507          * @param string $cmd         Command
 508          * @param array  $contact     Contact record of the receiver
 509          * @param array  $owner       Owner record of the sender
 510          * @param array  $target_item Item record of the content
 511          * @param array  $thr_parent  Item record of the direct parent in the thread
 512          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 513          * @throws \ImagickException
 514          */
 515         private static function deliverMail($cmd, $contact, $owner, $target_item, $thr_parent)
 516         {
 517                 if (DI::config()->get('system','dfrn_only')) {
 518                         return;
 519                 }
 520
 521                 $addr = $contact['addr'];
 522                 if (!strlen($addr)) {
 523                         return;
 524                 }
 525
 526                 if (!in_array($cmd, [self::POST, self::POKE])) {
 527                         return;
 528                 }
 529
 530                 if ($target_item['verb'] != Activity::POST) {
 531                         return;
 532                 }
 533
 534                 if (!empty($thr_parent['object'])) {
 535                         $data = json_decode($thr_parent['object'], true);
 536                         if (!empty($data['reply_to'])) {
 537                                 $addr = $data['reply_to'][0]['mailbox'] . '@' . $data['reply_to'][0]['host'];
 538                                 Logger::info('Use "reply-to" address of the thread parent', ['addr' => $addr]);
 539                         } elseif (!empty($data['from'])) {
 540                                 $addr = $data['from'][0]['mailbox'] . '@' . $data['from'][0]['host'];
 541                                 Logger::info('Use "from" address of the thread parent', ['addr' => $addr]);
 542                         }
 543                 }
 544
 545                 $local_user = DBA::selectFirst('user', [], ['uid' => $owner['uid']]);
 546                 if (!DBA::isResult($local_user)) {
 547                         return;
 548                 }
 549
 550                 Logger::info('About to deliver via mail', ['guid' => $target_item['guid'], 'to' => $addr]);
 551
 552                 $reply_to = '';
 553                 $mailacct = DBA::selectFirst('mailacct', ['reply_to'], ['uid' => $owner['uid']]);
 554                 if (DBA::isResult($mailacct) && !empty($mailacct['reply_to'])) {
 555                         $reply_to = $mailacct['reply_to'];
 556                 }
 557
 558                 $subject  = ($target_item['title'] ? Email::encodeHeader($target_item['title'], 'UTF-8') : DI::l10n()->t("\x28no subject\x29"));
 559
 560                 // only expose our real email address to true friends
 561
 562                 if (($contact['rel'] == Model\Contact::FRIEND) && !$contact['blocked']) {
 563                         if ($reply_to) {
 564                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $reply_to . '>' . "\n";
 565                                 $headers .= 'Sender: ' . $local_user['email'] . "\n";
 566                         } else {
 567                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $local_user['email'] . '>' . "\n";
 568                         }
 569                 } else {
 570                         $sender = DI::config()->get('config', 'sender_email', 'noreply@' . DI::baseUrl()->getHostname());
 571                         $headers  = 'From: '. Email::encodeHeader($local_user['username'], 'UTF-8') . ' <' . $sender . '>' . "\n";
 572                 }
 573
 574                 $headers .= 'Message-Id: <' . Email::iri2msgid($target_item['uri']) . '>' . "\n";
 575
 576                 if ($target_item['uri'] !== $target_item['parent-uri']) {
 577                         $headers .= 'References: <' . Email::iri2msgid($target_item['parent-uri']) . '>';
 578
 579                         // Export more references on deeper nested threads
 580                         if (($target_item['thr-parent'] != '') && ($target_item['thr-parent'] != $target_item['parent-uri'])) {
 581                                 $headers .= ' <' . Email::iri2msgid($target_item['thr-parent']) . '>';
 582                         }
 583
 584                         $headers .= "\n";
 585
 586                         if (empty($target_item['title'])) {
 587                                 $condition = ['uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 588                                 $title = Model\Item::selectFirst(['title'], $condition);
 589
 590                                 if (DBA::isResult($title) && ($title['title'] != '')) {
 591                                         $subject = $title['title'];
 592                                 } else {
 593                                         $condition = ['parent-uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 594                                         $title = Model\Item::selectFirst(['title'], $condition);
 595
 596                                         if (DBA::isResult($title) && ($title['title'] != '')) {
 597                                                 $subject = $title['title'];
 598                                         }
 599                                 }
 600                         }
 601
 602                         if (strncasecmp($subject, 'RE:', 3)) {
 603                                 $subject = 'Re: ' . $subject;
 604                         }
 605                 }
 606
 607                 Email::send($addr, $subject, $headers, $target_item);
 608
 609                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Model\Post\DeliveryData::MAIL);
 610
 611                 Logger::info('Delivered via mail', ['guid' => $target_item['guid'], 'to' => $addr, 'subject' => $subject]);
 612         }
 613 }