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\Post::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\Post::select([], $condition, $params);
  86
  87                         while ($item = Model\Post::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\Post::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                         $top_level = $target_item['gravity'] == GRAVITY_PARENT;
 145
 146                         // This is IMPORTANT!!!!
 147
 148                         // We will only send a "notify owner to relay" or followup message if the referenced post
 149                         // originated on our system by virtue of having our hostname somewhere
 150                         // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
 151                         // if $parent['wall'] == 1 we will already have the parent message in our array
 152                         // and we will relay the whole lot.
 153
 154                         $localhost = DI::baseUrl()->getHostname();
 155                         if (strpos($localhost, ':')) {
 156                                 $localhost = substr($localhost, 0, strpos($localhost, ':'));
 157                         }
 158                         /**
 159                          *
 160                          * Be VERY CAREFUL if you make any changes to the following line. Seemingly innocuous changes
 161                          * have been known to cause runaway conditions which affected several servers, along with
 162                          * permissions issues.
 163                          *
 164                          */
 165
 166                         if (!$top_level && ($parent['wall'] == 0) && stristr($target_item['uri'], $localhost)) {
 167                                 Logger::log('Followup ' . $target_item["guid"], Logger::DEBUG);
 168                                 // local followup to remote post
 169                                 $followup = true;
 170                         }
 171
 172                         if (empty($parent['allow_cid'])
 173                                 && empty($parent['allow_gid'])
 174                                 && empty($parent['deny_cid'])
 175                                 && empty($parent['deny_gid'])
 176                                 && ($parent["private"] != Model\Item::PRIVATE)) {
 177                                 $public_message = true;
 178                         }
 179                 }
 180
 181                 if (empty($items)) {
 182                         Logger::log('No delivery data for  ' . $cmd . ' - Item ID: ' .$target_id . ' - Contact ID: ' . $contact_id);
 183                 }
 184
 185                 $owner = Model\User::getOwnerDataById($uid);
 186                 if (!DBA::isResult($owner)) {
 187                         self::setFailedQueue($cmd, $target_item);
 188                         return;
 189                 }
 190
 191                 // We don't deliver our items to blocked, archived or pending contacts, and not to ourselves either
 192                 $contact = DBA::selectFirst('contact', [],
 193                         ['id' => $contact_id, 'archive' => false, 'blocked' => false, 'pending' => false, 'self' => false]
 194                 );
 195                 if (!DBA::isResult($contact)) {
 196                         self::setFailedQueue($cmd, $target_item);
 197                         return;
 198                 }
 199
 200                 if (Network::isUrlBlocked($contact['url'])) {
 201                         self::setFailedQueue($cmd, $target_item);
 202                         return;
 203                 }
 204
 205                 $protocol = Model\GServer::getProtocol($contact['gsid'] ?? 0);
 206
 207                 // Transmit via Diaspora if the thread had started as Diaspora post.
 208                 // Also transmit via Diaspora if this is a direct answer to a Diaspora comment.
 209                 // This is done since the uri wouldn't match (Diaspora doesn't transmit it)
 210                 // Also transmit relayed posts from Diaspora contacts via Diaspora.
 211                 if (!empty($parent) && !empty($thr_parent) && in_array(Protocol::DIASPORA, [$parent['network'], $thr_parent['network'], $target_item['network']])) {
 212                         $contact['network'] = Protocol::DIASPORA;
 213                 }
 214
 215                 // Ensure that local contacts are delivered locally
 216                 if (Model\Contact::isLocal($contact['url'])) {
 217                         $contact['network'] = Protocol::DFRN;
 218                 }
 219
 220                 Logger::notice('Delivering', ['cmd' => $cmd, 'target' => $target_id, 'followup' => $followup, 'network' => $contact['network']]);
 221
 222                 switch ($contact['network']) {
 223                         case Protocol::DFRN:
 224                                 self::deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup, $protocol);
 225                                 break;
 226
 227                         case Protocol::DIASPORA:
 228                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 229                                 break;
 230
 231                         case Protocol::MAIL:
 232                                 self::deliverMail($cmd, $contact, $owner, $target_item, $thr_parent);
 233                                 break;
 234
 235                         default:
 236                                 break;
 237                 }
 238
 239                 return;
 240         }
 241
 242         /**
 243          * Increased the "failed" counter in the item delivery data
 244          *
 245          * @param string $cmd  Command
 246          * @param array  $item Item array
 247          */
 248         private static function setFailedQueue(string $cmd, array $item)
 249         {
 250                 if (!in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 251                         return;
 252                 }
 253
 254                 Model\Post\DeliveryData::incrementQueueFailed($item['uri-id'] ?? $item['id']);
 255         }
 256
 257         /**
 258          * Deliver content via DFRN
 259          *
 260          * @param string  $cmd             Command
 261          * @param array   $contact         Contact record of the receiver
 262          * @param array   $owner           Owner record of the sender
 263          * @param array   $items           Item record of the content and the parent
 264          * @param array   $target_item     Item record of the content
 265          * @param boolean $public_message  Is the content public?
 266          * @param boolean $top_level       Is it a thread starter?
 267          * @param boolean $followup        Is it an answer to a remote post?
 268          * @param int     $server_protocol The protocol of the server
 269          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 270          * @throws \ImagickException
 271          */
 272         private static function deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup, $server_protocol)
 273         {
 274                 // Transmit Diaspora reshares via Diaspora if the Friendica contact support Diaspora
 275                 if (Diaspora::isReshare($target_item['body']) && !empty(FContact::getByURL($contact['addr'], false))) {
 276                         Logger::info('Reshare will be transmitted via Diaspora', ['url' => $contact['url'], 'guid' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
 277                         self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 278                         return;
 279                 }
 280
 281                 Logger::info('Deliver ' . (($target_item['guid'] ?? '') ?: $target_item['id']) . ' via DFRN to ' . (($contact['addr'] ?? '') ?: $contact['url']));
 282
 283                 if ($cmd == self::MAIL) {
 284                         $item = $target_item;
 285                         $item['body'] = Model\Item::fixPrivatePhotos($item['body'], $owner['uid'], null, $item['contact-id']);
 286                         $atom = DFRN::mail($item, $owner);
 287                 } elseif ($cmd == self::SUGGESTION) {
 288                         $item = $target_item;
 289                         $atom = DFRN::fsuggest($item, $owner);
 290                         DBA::delete('fsuggest', ['id' => $item['id']]);
 291                 } elseif ($cmd == self::RELOCATION) {
 292                         $atom = DFRN::relocate($owner, $owner['uid']);
 293                 } elseif ($followup) {
 294                         $msgitems = [$target_item];
 295                         $atom = DFRN::entries($msgitems, $owner);
 296                 } else {
 297                         if ($target_item['deleted']) {
 298                                 $msgitems = [$target_item];
 299                         } else {
 300                                 $msgitems = [];
 301                                 foreach ($items as $item) {
 302                                         // Only add the parent when we don't delete other items.
 303                                         if (($target_item['id'] == $item['id']) || ($cmd != self::DELETION)) {
 304                                                 $item["entry:comment-allow"] = true;
 305                                                 $item["entry:cid"] = ($top_level ? $contact['id'] : 0);
 306                                                 $msgitems[] = $item;
 307                                         }
 308                                 }
 309                         }
 310                         $atom = DFRN::entries($msgitems, $owner);
 311                 }
 312
 313                 Logger::debug('Notifier entry: ' . $contact["url"] . ' ' . (($target_item['guid'] ?? '') ?: $target_item['id']) . ' entry: ' . $atom);
 314
 315                 // perform local delivery if we are on the same site
 316                 if (Model\Contact::isLocal($contact['url'])) {
 317                         $condition = ['nurl' => Strings::normaliseLink($contact['url']), 'self' => true];
 318                         $target_self = DBA::selectFirst('contact', ['uid'], $condition);
 319                         if (!DBA::isResult($target_self)) {
 320                                 return;
 321                         }
 322                         $target_uid = $target_self['uid'];
 323
 324                         // Check if the user has got this contact
 325                         $cid = Model\Contact::getIdForURL($owner['url'], $target_uid);
 326                         if (!$cid) {
 327                                 // Otherwise there should be a public contact
 328                                 $cid = Model\Contact::getIdForURL($owner['url']);
 329                                 if (!$cid) {
 330                                         return;
 331                                 }
 332                         }
 333
 334                         $target_importer = DFRN::getImporter($cid, $target_uid);
 335                         if (empty($target_importer)) {
 336                                 // This should never happen
 337                                 return;
 338                         }
 339
 340                         DFRN::import($atom, $target_importer, Conversation::PARCEL_LOCAL_DFRN, Conversation::PUSH);
 341
 342                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 343                                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Model\Post\DeliveryData::DFRN);
 344                         }
 345
 346                         return;
 347                 }
 348
 349                 $protocol = Model\Post\DeliveryData::DFRN;
 350
 351                 // We don't have a relationship with contacts on a public post.
 352                 // Se we transmit with the new method and via Diaspora as a fallback
 353                 if (!empty($items) && (($items[0]['uid'] == 0) || ($contact['uid'] == 0))) {
 354                         // Transmit in public if it's a relay post
 355                         $public_dfrn = ($contact['contact-type'] == Model\Contact::TYPE_RELAY);
 356
 357                         $deliver_status = DFRN::transmit($owner, $contact, $atom, $public_dfrn);
 358
 359                         // We never spool failed relay deliveries
 360                         if ($public_dfrn) {
 361                                 Logger::info('Relay delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
 362
 363                                 if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 364                                         if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 365                                                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], $protocol);
 366
 367                                                 Model\GServer::setProtocol($contact['gsid'] ?? 0, $protocol);
 368                                         } else {
 369                                                 Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
 370                                         }
 371                                 }
 372                                 return;
 373                         }
 374
 375                         if ((($deliver_status < 200) || ($deliver_status > 299)) && (empty($server_protocol) || ($server_protocol == Model\Post\DeliveryData::LEGACY_DFRN))) {
 376                                 // Transmit via Diaspora if not possible via Friendica
 377                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 378                                 return;
 379                         }
 380                 } elseif ($cmd != self::RELOCATION) {
 381                         // DFRN payload over Diaspora transport layer
 382                         $deliver_status = DFRN::transmit($owner, $contact, $atom);
 383                         if (($deliver_status < 200) && (empty($server_protocol) || ($server_protocol == Model\Post\DeliveryData::LEGACY_DFRN))) {
 384                                 // Legacy DFRN
 385                                 $deliver_status = DFRN::deliver($owner, $contact, $atom);
 386                                 $protocol = Model\Post\DeliveryData::LEGACY_DFRN;
 387                         }
 388                 } else {
 389                         $deliver_status = DFRN::deliver($owner, $contact, $atom);
 390                         $protocol = Model\Post\DeliveryData::LEGACY_DFRN;
 391                 }
 392
 393                 Logger::info('DFRN Delivery', ['cmd' => $cmd, 'url' => $contact['url'], 'guid' => ($target_item['guid'] ?? '') ?: $target_item['id'], 'return' => $deliver_status]);
 394
 395                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 396                         // We successfully delivered a message, the contact is alive
 397                         Model\Contact::unmarkForArchival($contact);
 398
 399                         Model\GServer::setProtocol($contact['gsid'] ?? 0, $protocol);
 400
 401                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 402                                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], $protocol);
 403                         }
 404                 } else {
 405                         // The message could not be delivered. We mark the contact as "dead"
 406                         Model\Contact::markForArchival($contact);
 407
 408                         Logger::info('Delivery failed: defer message', ['id' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
 409                         if (!Worker::defer() && in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 410                                 Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
 411                         }
 412                 }
 413         }
 414
 415         /**
 416          * Deliver content via Diaspora
 417          *
 418          * @param string  $cmd            Command
 419          * @param array   $contact        Contact record of the receiver
 420          * @param array   $owner          Owner record of the sender
 421          * @param array   $items          Item record of the content and the parent
 422          * @param array   $target_item    Item record of the content
 423          * @param boolean $public_message Is the content public?
 424          * @param boolean $top_level      Is it a thread starter?
 425          * @param boolean $followup       Is it an answer to a remote post?
 426          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 427          * @throws \ImagickException
 428          */
 429         private static function deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 430         {
 431                 // We don't treat Forum posts as "wall-to-wall" to be able to post them via Diaspora
 432                 $walltowall = $top_level && ($owner['id'] != $items[0]['contact-id']) & ($owner['account-type'] != Model\User::ACCOUNT_TYPE_COMMUNITY);
 433
 434                 if ($public_message) {
 435                         $loc = 'public batch ' . $contact['batch'];
 436                 } else {
 437                         $loc = $contact['addr'];
 438                 }
 439
 440                 Logger::notice('Deliver via Diaspora', ['target' => $target_item['id'], 'guid' => $target_item['guid'], 'to' => $loc]);
 441
 442                 if (DI::config()->get('system', 'dfrn_only') || !DI::config()->get('system', 'diaspora_enabled')) {
 443                         return;
 444                 }
 445
 446                 if ($cmd == self::MAIL) {
 447                         Diaspora::sendMail($target_item, $owner, $contact);
 448                         return;
 449                 }
 450
 451                 if ($cmd == self::SUGGESTION) {
 452                         return;
 453                 }
 454
 455                 if (!$contact['pubkey'] && !$public_message) {
 456                         return;
 457                 }
 458
 459                 if ($cmd == self::RELOCATION) {
 460                         $deliver_status = Diaspora::sendAccountMigration($owner, $contact, $owner['uid']);
 461                 } elseif ($target_item['deleted'] && (($target_item['uri'] === $target_item['parent-uri']) || $followup)) {
 462                         // top-level retraction
 463                         Logger::log('diaspora retract: ' . $loc);
 464                         $deliver_status = Diaspora::sendRetraction($target_item, $owner, $contact, $public_message);
 465                 } elseif ($followup) {
 466                         // send comments and likes to owner to relay
 467                         Logger::log('diaspora followup: ' . $loc);
 468                         $deliver_status = Diaspora::sendFollowup($target_item, $owner, $contact, $public_message);
 469                 } elseif ($target_item['uri'] !== $target_item['parent-uri']) {
 470                         // we are the relay - send comments, likes and relayable_retractions to our conversants
 471                         Logger::log('diaspora relay: ' . $loc);
 472                         $deliver_status = Diaspora::sendRelay($target_item, $owner, $contact, $public_message);
 473                 } elseif ($top_level && !$walltowall) {
 474                         // currently no workable solution for sending walltowall
 475                         Logger::log('diaspora status: ' . $loc);
 476                         $deliver_status = Diaspora::sendStatus($target_item, $owner, $contact, $public_message);
 477                 } else {
 478                         Logger::log('Unknown mode ' . $cmd . ' for ' . $loc);
 479                         return;
 480                 }
 481
 482                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 483                         // We successfully delivered a message, the contact is alive
 484                         Model\Contact::unmarkForArchival($contact);
 485
 486                         Model\GServer::setProtocol($contact['gsid'] ?? 0, Model\Post\DeliveryData::DIASPORA);
 487
 488                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 489                                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Model\Post\DeliveryData::DIASPORA);
 490                         }
 491                 } else {
 492                         // The message could not be delivered. We mark the contact as "dead"
 493                         Model\Contact::markForArchival($contact);
 494
 495                         // When it is delivered to the public endpoint, we do mark the relay contact for archival as well
 496                         if ($public_message) {
 497                                 Relay::markForArchival($contact);
 498                         }
 499
 500                         if (empty($contact['contact-type']) || ($contact['contact-type'] != Model\Contact::TYPE_RELAY)) {
 501                                 Logger::info('Delivery failed: defer message', ['id' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
 502                                 // defer message for redelivery
 503                                 if (!Worker::defer() && in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 504                                         Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
 505                                 }
 506                         } elseif (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 507                                 Model\Post\DeliveryData::incrementQueueFailed($target_item['uri-id']);
 508                         }
 509                 }
 510         }
 511
 512         /**
 513          * Deliver content via mail
 514          *
 515          * @param string $cmd         Command
 516          * @param array  $contact     Contact record of the receiver
 517          * @param array  $owner       Owner record of the sender
 518          * @param array  $target_item Item record of the content
 519          * @param array  $thr_parent  Item record of the direct parent in the thread
 520          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 521          * @throws \ImagickException
 522          */
 523         private static function deliverMail($cmd, $contact, $owner, $target_item, $thr_parent)
 524         {
 525                 if (DI::config()->get('system','dfrn_only')) {
 526                         return;
 527                 }
 528
 529                 $addr = $contact['addr'];
 530                 if (!strlen($addr)) {
 531                         return;
 532                 }
 533
 534                 if (!in_array($cmd, [self::POST, self::POKE])) {
 535                         return;
 536                 }
 537
 538                 if ($target_item['verb'] != Activity::POST) {
 539                         return;
 540                 }
 541
 542                 if (!empty($thr_parent['object'])) {
 543                         $data = json_decode($thr_parent['object'], true);
 544                         if (!empty($data['reply_to'])) {
 545                                 $addr = $data['reply_to'][0]['mailbox'] . '@' . $data['reply_to'][0]['host'];
 546                                 Logger::info('Use "reply-to" address of the thread parent', ['addr' => $addr]);
 547                         } elseif (!empty($data['from'])) {
 548                                 $addr = $data['from'][0]['mailbox'] . '@' . $data['from'][0]['host'];
 549                                 Logger::info('Use "from" address of the thread parent', ['addr' => $addr]);
 550                         }
 551                 }
 552
 553                 $local_user = DBA::selectFirst('user', [], ['uid' => $owner['uid']]);
 554                 if (!DBA::isResult($local_user)) {
 555                         return;
 556                 }
 557
 558                 Logger::info('About to deliver via mail', ['guid' => $target_item['guid'], 'to' => $addr]);
 559
 560                 $reply_to = '';
 561                 $mailacct = DBA::selectFirst('mailacct', ['reply_to'], ['uid' => $owner['uid']]);
 562                 if (DBA::isResult($mailacct) && !empty($mailacct['reply_to'])) {
 563                         $reply_to = $mailacct['reply_to'];
 564                 }
 565
 566                 $subject  = ($target_item['title'] ? Email::encodeHeader($target_item['title'], 'UTF-8') : DI::l10n()->t("\x28no subject\x29"));
 567
 568                 // only expose our real email address to true friends
 569
 570                 if (($contact['rel'] == Model\Contact::FRIEND) && !$contact['blocked']) {
 571                         if ($reply_to) {
 572                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $reply_to . '>' . "\n";
 573                                 $headers .= 'Sender: ' . $local_user['email'] . "\n";
 574                         } else {
 575                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $local_user['email'] . '>' . "\n";
 576                         }
 577                 } else {
 578                         $sender = DI::config()->get('config', 'sender_email', 'noreply@' . DI::baseUrl()->getHostname());
 579                         $headers  = 'From: '. Email::encodeHeader($local_user['username'], 'UTF-8') . ' <' . $sender . '>' . "\n";
 580                 }
 581
 582                 $headers .= 'Message-Id: <' . Email::iri2msgid($target_item['uri']) . '>' . "\n";
 583
 584                 if ($target_item['uri'] !== $target_item['parent-uri']) {
 585                         $headers .= 'References: <' . Email::iri2msgid($target_item['parent-uri']) . '>';
 586
 587                         // Export more references on deeper nested threads
 588                         if (($target_item['thr-parent'] != '') && ($target_item['thr-parent'] != $target_item['parent-uri'])) {
 589                                 $headers .= ' <' . Email::iri2msgid($target_item['thr-parent']) . '>';
 590                         }
 591
 592                         $headers .= "\n";
 593
 594                         if (empty($target_item['title'])) {
 595                                 $condition = ['uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 596                                 $title = Model\Post::selectFirst(['title'], $condition);
 597
 598                                 if (DBA::isResult($title) && ($title['title'] != '')) {
 599                                         $subject = $title['title'];
 600                                 } else {
 601                                         $condition = ['parent-uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 602                                         $title = Model\Post::selectFirst(['title'], $condition);
 603
 604                                         if (DBA::isResult($title) && ($title['title'] != '')) {
 605                                                 $subject = $title['title'];
 606                                         }
 607                                 }
 608                         }
 609
 610                         if (strncasecmp($subject, 'RE:', 3)) {
 611                                 $subject = 'Re: ' . $subject;
 612                         }
 613                 }
 614
 615                 Email::send($addr, $subject, $headers, $target_item);
 616
 617                 Model\Post\DeliveryData::incrementQueueDone($target_item['uri-id'], Model\Post\DeliveryData::MAIL);
 618
 619                 Logger::info('Delivered via mail', ['guid' => $target_item['guid'], 'to' => $addr, 'subject' => $subject]);
 620         }
 621 }