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