src/Worker/Delivery.php

   1 <?php
   2 /**
   3  * @file src/Worker/Delivery.php
   4  */
   5 namespace Friendica\Worker;
   6
   7 use Friendica\BaseObject;
   8 use Friendica\Core\Config;
   9 use Friendica\Core\L10n;
  10 use Friendica\Core\Logger;
  11 use Friendica\Core\Protocol;
  12 use Friendica\Core\System;
  13 use Friendica\Database\DBA;
  14 use Friendica\DI;
  15 use Friendica\Model;
  16 use Friendica\Protocol\DFRN;
  17 use Friendica\Protocol\Diaspora;
  18 use Friendica\Protocol\Email;
  19 use Friendica\Protocol\Activity;
  20 use Friendica\Util\Strings;
  21 use Friendica\Util\Network;
  22 use Friendica\Core\Worker;
  23
  24 class Delivery extends BaseObject
  25 {
  26         const MAIL          = 'mail';
  27         const SUGGESTION    = 'suggest';
  28         const RELOCATION    = 'relocate';
  29         const DELETION      = 'drop';
  30         const POST          = 'wall-new';
  31         const POKE          = 'poke';
  32         const UPLINK        = 'uplink';
  33         const REMOVAL       = 'removeme';
  34         const PROFILEUPDATE = 'profileupdate';
  35
  36         public static function execute($cmd, $target_id, $contact_id)
  37         {
  38                 Logger::info('Invoked', ['cmd' => $cmd, 'target' => $target_id, 'contact' => $contact_id]);
  39
  40                 $top_level = false;
  41                 $followup = false;
  42                 $public_message = false;
  43
  44                 $items = [];
  45                 if ($cmd == self::MAIL) {
  46                         $target_item = DBA::selectFirst('mail', [], ['id' => $target_id]);
  47                         if (!DBA::isResult($target_item)) {
  48                                 self::setFailedQueue($cmd, $target_id);
  49                                 return;
  50                         }
  51                         $uid = $target_item['uid'];
  52                 } elseif ($cmd == self::SUGGESTION) {
  53                         $target_item = DBA::selectFirst('fsuggest', [], ['id' => $target_id]);
  54                         if (!DBA::isResult($target_item)) {
  55                                 self::setFailedQueue($cmd, $target_id);
  56                                 return;
  57                         }
  58                         $uid = $target_item['uid'];
  59                 } elseif ($cmd == self::RELOCATION) {
  60                         $uid = $target_id;
  61                         $target_item = [];
  62                 } else {
  63                         $item = Model\Item::selectFirst(['parent'], ['id' => $target_id]);
  64                         if (!DBA::isResult($item) || empty($item['parent'])) {
  65                                 self::setFailedQueue($cmd, $target_id);
  66                                 return;
  67                         }
  68                         $parent_id = intval($item['parent']);
  69
  70                         $condition = ['id' => [$target_id, $parent_id], 'visible' => true, 'moderated' => false];
  71                         $params = ['order' => ['id']];
  72                         $itemdata = Model\Item::select([], $condition, $params);
  73
  74                         while ($item = Model\Item::fetch($itemdata)) {
  75                                 if ($item['id'] == $parent_id) {
  76                                         $parent = $item;
  77                                 }
  78                                 if ($item['id'] == $target_id) {
  79                                         $target_item = $item;
  80                                 }
  81                                 $items[] = $item;
  82                         }
  83                         DBA::close($itemdata);
  84
  85                         if (empty($target_item)) {
  86                                 Logger::log('Item ' . $target_id . "wasn't found. Quitting here.");
  87                                 self::setFailedQueue($cmd, $target_id);
  88                                 return;
  89                         }
  90
  91                         if (empty($parent)) {
  92                                 Logger::log('Parent ' . $parent_id . ' for item ' . $target_id . "wasn't found. Quitting here.");
  93                                 self::setFailedQueue($cmd, $target_id);
  94                                 return;
  95                         }
  96
  97                         if (!empty($target_item['contact-uid'])) {
  98                                 $uid = $target_item['contact-uid'];
  99                         } elseif (!empty($target_item['uid'])) {
 100                                 $uid = $target_item['uid'];
 101                         } else {
 102                                 Logger::log('Only public users for item ' . $target_id, Logger::DEBUG);
 103                                 self::setFailedQueue($cmd, $target_id);
 104                                 return;
 105                         }
 106
 107                         $condition = ['uri' => $target_item['thr-parent'], 'uid' => $target_item['uid']];
 108                         $thr_parent = Model\Item::selectFirst(['network', 'object'], $condition);
 109                         if (!DBA::isResult($thr_parent)) {
 110                                 // Shouldn't happen. But when this does, we just take the parent as thread parent.
 111                                 // That's totally okay for what we use this variable here.
 112                                 $thr_parent = $parent;
 113                         }
 114
 115                         if (!empty($contact_id) && Model\Contact::isArchived($contact_id)) {
 116                                 Logger::info('Contact is archived', ['id' => $contact_id, 'cmd' => $cmd, 'item' => $target_item['id']]);
 117                                 self::setFailedQueue($cmd, $target_id);
 118                                 return;
 119                         }
 120
 121                         // avoid race condition with deleting entries
 122                         if ($items[0]['deleted']) {
 123                                 foreach ($items as $item) {
 124                                         $item['deleted'] = 1;
 125                                 }
 126                         }
 127
 128                         // When commenting too fast after delivery, a post wasn't recognized as top level post.
 129                         // The count then showed more than one entry. The additional check should help.
 130                         // The check for the "count" should be superfluous, but I'm not totally sure by now, so we keep it.
 131                         if ((($parent['id'] == $target_id) || (count($items) == 1)) && ($parent['uri'] === $parent['parent-uri'])) {
 132                                 Logger::log('Top level post');
 133                                 $top_level = true;
 134                         }
 135
 136                         // This is IMPORTANT!!!!
 137
 138                         // We will only send a "notify owner to relay" or followup message if the referenced post
 139                         // originated on our system by virtue of having our hostname somewhere
 140                         // in the URI, AND it was a comment (not top_level) AND the parent originated elsewhere.
 141                         // if $parent['wall'] == 1 we will already have the parent message in our array
 142                         // and we will relay the whole lot.
 143
 144                         $localhost = DI::app()->getHostName();
 145                         if (strpos($localhost, ':')) {
 146                                 $localhost = substr($localhost, 0, strpos($localhost, ':'));
 147                         }
 148                         /**
 149                          *
 150                          * Be VERY CAREFUL if you make any changes to the following line. Seemingly innocuous changes
 151                          * have been known to cause runaway conditions which affected several servers, along with
 152                          * permissions issues.
 153                          *
 154                          */
 155
 156                         if (!$top_level && ($parent['wall'] == 0) && stristr($target_item['uri'], $localhost)) {
 157                                 Logger::log('Followup ' . $target_item["guid"], Logger::DEBUG);
 158                                 // local followup to remote post
 159                                 $followup = true;
 160                         }
 161
 162                         if (empty($parent['allow_cid'])
 163                                 && empty($parent['allow_gid'])
 164                                 && empty($parent['deny_cid'])
 165                                 && empty($parent['deny_gid'])
 166                                 && !$parent["private"]) {
 167                                 $public_message = true;
 168                         }
 169                 }
 170
 171                 if (empty($items)) {
 172                         Logger::log('No delivery data for  ' . $cmd . ' - Item ID: ' .$target_id . ' - Contact ID: ' . $contact_id);
 173                 }
 174
 175                 $owner = Model\User::getOwnerDataById($uid);
 176                 if (!DBA::isResult($owner)) {
 177                         self::setFailedQueue($cmd, $target_id);
 178                         return;
 179                 }
 180
 181                 // We don't deliver our items to blocked or pending contacts, and not to ourselves either
 182                 $contact = DBA::selectFirst('contact', [],
 183                         ['id' => $contact_id, 'blocked' => false, 'pending' => false, 'self' => false]
 184                 );
 185                 if (!DBA::isResult($contact)) {
 186                         self::setFailedQueue($cmd, $target_id);
 187                         return;
 188                 }
 189
 190                 if (Network::isUrlBlocked($contact['url'])) {
 191                         self::setFailedQueue($cmd, $target_id);
 192                         return;
 193                 }
 194
 195                 // Transmit via Diaspora if the thread had started as Diaspora post.
 196                 // Also transmit via Diaspora if this is a direct answer to a Diaspora comment.
 197                 // This is done since the uri wouldn't match (Diaspora doesn't transmit it)
 198                 if (!empty($parent) && !empty($thr_parent) && in_array(Protocol::DIASPORA, [$parent['network'], $thr_parent['network']])) {
 199                         $contact['network'] = Protocol::DIASPORA;
 200                 }
 201
 202                 Logger::notice('Delivering', ['cmd' => $cmd, 'target' => $target_id, 'followup' => $followup, 'network' => $contact['network']]);
 203
 204                 switch ($contact['network']) {
 205                         case Protocol::DFRN:
 206                                 self::deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 207                                 break;
 208
 209                         case Protocol::DIASPORA:
 210                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 211                                 break;
 212
 213                         case Protocol::MAIL:
 214                                 self::deliverMail($cmd, $contact, $owner, $target_item, $thr_parent);
 215                                 break;
 216
 217                         default:
 218                                 break;
 219                 }
 220
 221                 return;
 222         }
 223
 224         /**
 225          * Increased the "failed" counter in the item delivery data
 226          *
 227          * @param string  $cmd Command
 228          * @param integer $id  Item id
 229          */
 230         private static function setFailedQueue(string $cmd, int $id)
 231         {
 232                 if (!in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 233                         return;
 234                 }
 235
 236                 Model\ItemDeliveryData::incrementQueueFailed($id);
 237         }
 238
 239         /**
 240          * @brief Deliver content via DFRN
 241          *
 242          * @param string  $cmd            Command
 243          * @param array   $contact        Contact record of the receiver
 244          * @param array   $owner          Owner record of the sender
 245          * @param array   $items          Item record of the content and the parent
 246          * @param array   $target_item    Item record of the content
 247          * @param boolean $public_message Is the content public?
 248          * @param boolean $top_level      Is it a thread starter?
 249          * @param boolean $followup       Is it an answer to a remote post?
 250          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 251          * @throws \ImagickException
 252          */
 253         private static function deliverDFRN($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 254         {
 255                 // Transmit Diaspora reshares via Diaspora if the Friendica contact support Diaspora
 256                 if (Diaspora::isReshare($target_item['body']) && !empty(Diaspora::personByHandle($contact['addr'], false))) {
 257                         Logger::info('Reshare will be transmitted via Diaspora', ['url' => $contact['url'], 'guid' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
 258                         self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 259                         return;
 260                 }
 261
 262                 Logger::info('Deliver ' . (($target_item['guid'] ?? '') ?: $target_item['id']) . ' via DFRN to ' . (($contact['addr'] ?? '') ?: $contact['url']));
 263
 264                 if ($cmd == self::MAIL) {
 265                         $item = $target_item;
 266                         $item['body'] = Model\Item::fixPrivatePhotos($item['body'], $owner['uid'], null, $item['contact-id']);
 267                         $atom = DFRN::mail($item, $owner);
 268                 } elseif ($cmd == self::SUGGESTION) {
 269                         $item = $target_item;
 270                         $atom = DFRN::fsuggest($item, $owner);
 271                         DBA::delete('fsuggest', ['id' => $item['id']]);
 272                 } elseif ($cmd == self::RELOCATION) {
 273                         $atom = DFRN::relocate($owner, $owner['uid']);
 274                 } elseif ($followup) {
 275                         $msgitems = [$target_item];
 276                         $atom = DFRN::entries($msgitems, $owner);
 277                 } else {
 278                         $msgitems = [];
 279                         foreach ($items as $item) {
 280                                 // Only add the parent when we don't delete other items.
 281                                 if (($target_item['id'] == $item['id']) || ($cmd != self::DELETION)) {
 282                                         $item["entry:comment-allow"] = true;
 283                                         $item["entry:cid"] = ($top_level ? $contact['id'] : 0);
 284                                         $msgitems[] = $item;
 285                                 }
 286                         }
 287                         $atom = DFRN::entries($msgitems, $owner);
 288                 }
 289
 290                 Logger::debug('Notifier entry: ' . $contact["url"] . ' ' . (($target_item['guid'] ?? '') ?: $target_item['id']) . ' entry: ' . $atom);
 291
 292                 $basepath =  implode('/', array_slice(explode('/', $contact['url']), 0, 3));
 293
 294                 // perform local delivery if we are on the same site
 295
 296                 if (Strings::compareLink($basepath, System::baseUrl())) {
 297                         $condition = ['nurl' => Strings::normaliseLink($contact['url']), 'self' => true];
 298                         $target_self = DBA::selectFirst('contact', ['uid'], $condition);
 299                         if (!DBA::isResult($target_self)) {
 300                                 return;
 301                         }
 302                         $target_uid = $target_self['uid'];
 303
 304                         // Check if the user has got this contact
 305                         $cid = Model\Contact::getIdForURL($owner['url'], $target_uid);
 306                         if (!$cid) {
 307                                 // Otherwise there should be a public contact
 308                                 $cid = Model\Contact::getIdForURL($owner['url']);
 309                                 if (!$cid) {
 310                                         return;
 311                                 }
 312                         }
 313
 314                         $target_importer = DFRN::getImporter($cid, $target_uid);
 315                         if (empty($target_importer)) {
 316                                 // This should never happen
 317                                 return;
 318                         }
 319
 320                         DFRN::import($atom, $target_importer);
 321
 322                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 323                                 Model\ItemDeliveryData::incrementQueueDone($target_item['id'], Model\ItemDeliveryData::DFRN);
 324                         }
 325
 326                         return;
 327                 }
 328
 329                 $protocol = Model\ItemDeliveryData::DFRN;
 330
 331                 // We don't have a relationship with contacts on a public post.
 332                 // Se we transmit with the new method and via Diaspora as a fallback
 333                 if (!empty($items) && (($items[0]['uid'] == 0) || ($contact['uid'] == 0))) {
 334                         // Transmit in public if it's a relay post
 335                         $public_dfrn = ($contact['contact-type'] == Model\Contact::TYPE_RELAY);
 336
 337                         $deliver_status = DFRN::transmit($owner, $contact, $atom, $public_dfrn);
 338
 339                         // We never spool failed relay deliveries
 340                         if ($public_dfrn) {
 341                                 Logger::info('Relay delivery to ' . $contact["url"] . ' with guid ' . $target_item["guid"] . ' returns ' . $deliver_status);
 342
 343                                 if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 344                                         if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 345                                                 Model\ItemDeliveryData::incrementQueueDone($target_item['id'], $protocol);
 346                                         } else {
 347                                                 Model\ItemDeliveryData::incrementQueueFailed($target_item['id']);
 348                                         }
 349                                 }
 350                                 return;
 351                         }
 352
 353                         if (($deliver_status < 200) || ($deliver_status > 299)) {
 354                                 // Transmit via Diaspora if not possible via Friendica
 355                                 self::deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup);
 356                                 return;
 357                         }
 358                 } elseif ($cmd != self::RELOCATION) {
 359                         // DFRN payload over Diaspora transport layer
 360                         $deliver_status = DFRN::transmit($owner, $contact, $atom);
 361                         if ($deliver_status < 200) {
 362                                 // Legacy DFRN
 363                                 $deliver_status = DFRN::deliver($owner, $contact, $atom);
 364                                 $protocol = Model\ItemDeliveryData::LEGACY_DFRN;
 365                         }
 366                 } else {
 367                         $deliver_status = DFRN::deliver($owner, $contact, $atom);
 368                         $protocol = Model\ItemDeliveryData::LEGACY_DFRN;
 369                 }
 370
 371                 Logger::info('DFRN Delivery', ['cmd' => $cmd, 'url' => $contact['url'], 'guid' => ($target_item['guid'] ?? '') ?: $target_item['id'], 'return' => $deliver_status]);
 372
 373                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 374                         // We successfully delivered a message, the contact is alive
 375                         Model\Contact::unmarkForArchival($contact);
 376
 377                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 378                                 Model\ItemDeliveryData::incrementQueueDone($target_item['id'], $protocol);
 379                         }
 380                 } else {
 381                         // The message could not be delivered. We mark the contact as "dead"
 382                         Model\Contact::markForArchival($contact);
 383
 384                         Logger::info('Delivery failed: defer message', ['id' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
 385                         if (!Worker::defer() && in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 386                                 Model\ItemDeliveryData::incrementQueueFailed($target_item['id']);
 387                         }
 388                 }
 389         }
 390
 391         /**
 392          * @brief Deliver content via Diaspora
 393          *
 394          * @param string  $cmd            Command
 395          * @param array   $contact        Contact record of the receiver
 396          * @param array   $owner          Owner record of the sender
 397          * @param array   $items          Item record of the content and the parent
 398          * @param array   $target_item    Item record of the content
 399          * @param boolean $public_message Is the content public?
 400          * @param boolean $top_level      Is it a thread starter?
 401          * @param boolean $followup       Is it an answer to a remote post?
 402          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 403          * @throws \ImagickException
 404          */
 405         private static function deliverDiaspora($cmd, $contact, $owner, $items, $target_item, $public_message, $top_level, $followup)
 406         {
 407                 // We don't treat Forum posts as "wall-to-wall" to be able to post them via Diaspora
 408                 $walltowall = $top_level && ($owner['id'] != $items[0]['contact-id']) & ($owner['account-type'] != Model\User::ACCOUNT_TYPE_COMMUNITY);
 409
 410                 if ($public_message) {
 411                         $loc = 'public batch ' . $contact['batch'];
 412                 } else {
 413                         $loc = $contact['addr'];
 414                 }
 415
 416                 Logger::notice('Deliver via Diaspora', ['target' => $target_item['id'], 'guid' => $target_item['guid'], 'to' => $loc]);
 417
 418                 if (Config::get('system', 'dfrn_only') || !Config::get('system', 'diaspora_enabled')) {
 419                         return;
 420                 }
 421
 422                 if ($cmd == self::MAIL) {
 423                         Diaspora::sendMail($target_item, $owner, $contact);
 424                         return;
 425                 }
 426
 427                 if ($cmd == self::SUGGESTION) {
 428                         return;
 429                 }
 430
 431                 if (!$contact['pubkey'] && !$public_message) {
 432                         return;
 433                 }
 434
 435                 if ($cmd == self::RELOCATION) {
 436                         $deliver_status = Diaspora::sendAccountMigration($owner, $contact, $owner['uid']);
 437                 } elseif ($target_item['deleted'] && (($target_item['uri'] === $target_item['parent-uri']) || $followup)) {
 438                         // top-level retraction
 439                         Logger::log('diaspora retract: ' . $loc);
 440                         $deliver_status = Diaspora::sendRetraction($target_item, $owner, $contact, $public_message);
 441                 } elseif ($followup) {
 442                         // send comments and likes to owner to relay
 443                         Logger::log('diaspora followup: ' . $loc);
 444                         $deliver_status = Diaspora::sendFollowup($target_item, $owner, $contact, $public_message);
 445                 } elseif ($target_item['uri'] !== $target_item['parent-uri']) {
 446                         // we are the relay - send comments, likes and relayable_retractions to our conversants
 447                         Logger::log('diaspora relay: ' . $loc);
 448                         $deliver_status = Diaspora::sendRelay($target_item, $owner, $contact, $public_message);
 449                 } elseif ($top_level && !$walltowall) {
 450                         // currently no workable solution for sending walltowall
 451                         Logger::log('diaspora status: ' . $loc);
 452                         $deliver_status = Diaspora::sendStatus($target_item, $owner, $contact, $public_message);
 453                 } else {
 454                         Logger::log('Unknown mode ' . $cmd . ' for ' . $loc);
 455                         return;
 456                 }
 457
 458                 if (($deliver_status >= 200) && ($deliver_status <= 299)) {
 459                         // We successfully delivered a message, the contact is alive
 460                         Model\Contact::unmarkForArchival($contact);
 461
 462                         if (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 463                                 Model\ItemDeliveryData::incrementQueueDone($target_item['id'], Model\ItemDeliveryData::DIASPORA);
 464                         }
 465                 } else {
 466                         // The message could not be delivered. We mark the contact as "dead"
 467                         Model\Contact::markForArchival($contact);
 468
 469                         // When it is delivered to the public endpoint, we do mark the relay contact for archival as well
 470                         if ($public_message) {
 471                                 Diaspora::markRelayForArchival($contact);
 472                         }
 473
 474                         if (empty($contact['contact-type']) || ($contact['contact-type'] != Model\Contact::TYPE_RELAY)) {
 475                                 Logger::info('Delivery failed: defer message', ['id' => ($target_item['guid'] ?? '') ?: $target_item['id']]);
 476                                 // defer message for redelivery
 477                                 if (!Worker::defer() && in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 478                                         Model\ItemDeliveryData::incrementQueueFailed($target_item['id']);
 479                                 }
 480                         } elseif (in_array($cmd, [Delivery::POST, Delivery::POKE])) {
 481                                 Model\ItemDeliveryData::incrementQueueFailed($target_item['id']);
 482                         }
 483                 }
 484         }
 485
 486         /**
 487          * @brief Deliver content via mail
 488          *
 489          * @param string $cmd         Command
 490          * @param array  $contact     Contact record of the receiver
 491          * @param array  $owner       Owner record of the sender
 492          * @param array  $target_item Item record of the content
 493          * @param array  $thr_parent  Item record of the direct parent in the thread
 494          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 495          * @throws \ImagickException
 496          */
 497         private static function deliverMail($cmd, $contact, $owner, $target_item, $thr_parent)
 498         {
 499                 if (Config::get('system','dfrn_only')) {
 500                         return;
 501                 }
 502
 503                 $addr = $contact['addr'];
 504                 if (!strlen($addr)) {
 505                         return;
 506                 }
 507
 508                 if (!in_array($cmd, [self::POST, self::POKE])) {
 509                         return;
 510                 }
 511
 512                 if ($target_item['verb'] != Activity::POST) {
 513                         return;
 514                 }
 515
 516                 if (!empty($thr_parent['object'])) {
 517                         $data = json_decode($thr_parent['object'], true);
 518                         if (!empty($data['reply_to'])) {
 519                                 $addr = $data['reply_to'][0]['mailbox'] . '@' . $data['reply_to'][0]['host'];
 520                                 Logger::info('Use "reply-to" address of the thread parent', ['addr' => $addr]);
 521                         } elseif (!empty($data['from'])) {
 522                                 $addr = $data['from'][0]['mailbox'] . '@' . $data['from'][0]['host'];
 523                                 Logger::info('Use "from" address of the thread parent', ['addr' => $addr]);
 524                         }
 525                 }
 526
 527                 $local_user = DBA::selectFirst('user', [], ['uid' => $owner['uid']]);
 528                 if (!DBA::isResult($local_user)) {
 529                         return;
 530                 }
 531
 532                 Logger::info('About to deliver via mail', ['guid' => $target_item['guid'], 'to' => $addr]);
 533
 534                 $reply_to = '';
 535                 $mailacct = DBA::selectFirst('mailacct', ['reply_to'], ['uid' => $owner['uid']]);
 536                 if (DBA::isResult($mailacct) && !empty($mailacct['reply_to'])) {
 537                         $reply_to = $mailacct['reply_to'];
 538                 }
 539
 540                 $subject  = ($target_item['title'] ? Email::encodeHeader($target_item['title'], 'UTF-8') : L10n::t("\x28no subject\x29"));
 541
 542                 // only expose our real email address to true friends
 543
 544                 if (($contact['rel'] == Model\Contact::FRIEND) && !$contact['blocked']) {
 545                         if ($reply_to) {
 546                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $reply_to . '>' . "\n";
 547                                 $headers .= 'Sender: ' . $local_user['email'] . "\n";
 548                         } else {
 549                                 $headers  = 'From: ' . Email::encodeHeader($local_user['username'],'UTF-8') . ' <' . $local_user['email'] . '>' . "\n";
 550                         }
 551                 } else {
 552                         $headers  = 'From: '. Email::encodeHeader($local_user['username'], 'UTF-8') . ' <noreply@' . DI::app()->getHostName() . '>' . "\n";
 553                 }
 554
 555                 $headers .= 'Message-Id: <' . Email::iri2msgid($target_item['uri']) . '>' . "\n";
 556
 557                 if ($target_item['uri'] !== $target_item['parent-uri']) {
 558                         $headers .= 'References: <' . Email::iri2msgid($target_item['parent-uri']) . '>';
 559
 560                         // Export more references on deeper nested threads
 561                         if (($target_item['thr-parent'] != '') && ($target_item['thr-parent'] != $target_item['parent-uri'])) {
 562                                 $headers .= ' <' . Email::iri2msgid($target_item['thr-parent']) . '>';
 563                         }
 564
 565                         $headers .= "\n";
 566
 567                         if (empty($target_item['title'])) {
 568                                 $condition = ['uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 569                                 $title = Model\Item::selectFirst(['title'], $condition);
 570
 571                                 if (DBA::isResult($title) && ($title['title'] != '')) {
 572                                         $subject = $title['title'];
 573                                 } else {
 574                                         $condition = ['parent-uri' => $target_item['parent-uri'], 'uid' => $owner['uid']];
 575                                         $title = Model\Item::selectFirst(['title'], $condition);
 576
 577                                         if (DBA::isResult($title) && ($title['title'] != '')) {
 578                                                 $subject = $title['title'];
 579                                         }
 580                                 }
 581                         }
 582
 583                         if (strncasecmp($subject, 'RE:', 3)) {
 584                                 $subject = 'Re: ' . $subject;
 585                         }
 586                 }
 587
 588                 Email::send($addr, $subject, $headers, $target_item);
 589
 590                 Model\ItemDeliveryData::incrementQueueDone($target_item['id'], Model\ItemDeliveryData::MAIL);
 591
 592                 Logger::info('Delivered via mail', ['guid' => $target_item['guid'], 'to' => $addr, 'subject' => $subject]);
 593         }
 594 }