src/Worker/OnePoll.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\Contact;
  29 use Friendica\Model\Item;
  30 use Friendica\Model\User;
  31 use Friendica\Protocol\Activity;
  32 use Friendica\Protocol\ActivityPub;
  33 use Friendica\Protocol\Email;
  34 use Friendica\Protocol\PortableContact;
  35 use Friendica\Util\DateTimeFormat;
  36 use Friendica\Util\Network;
  37 use Friendica\Util\Strings;
  38 use Friendica\Util\XML;
  39
  40 class OnePoll
  41 {
  42         public static function execute($contact_id = 0, $command = '')
  43         {
  44                 Logger::log('Start for contact ' . $contact_id);
  45
  46                 $force = false;
  47
  48                 if ($command == "force") {
  49                         $force = true;
  50                 }
  51
  52                 if (!$contact_id) {
  53                         Logger::log('no contact');
  54                         return;
  55                 }
  56
  57
  58                 $contact = DBA::selectFirst('contact', [], ['id' => $contact_id]);
  59                 if (!DBA::isResult($contact)) {
  60                         Logger::log('Contact not found or cannot be used.');
  61                         return;
  62                 }
  63
  64                 if (($contact['network'] != Protocol::MAIL) || $force) {
  65                         Contact::updateFromProbe($contact_id, '', $force);
  66                 }
  67
  68                 // Special treatment for wrongly detected local contacts
  69                 if (!$force && ($contact['network'] != Protocol::DFRN) && Contact::isLocalById($contact_id)) {
  70                         Contact::updateFromProbe($contact_id, Protocol::DFRN, true);
  71                         $contact = DBA::selectFirst('contact', [], ['id' => $contact_id]);
  72                 }
  73
  74                 if (($contact['network'] == Protocol::DFRN) && !Contact::isLegacyDFRNContact($contact)) {
  75                         $protocol = Protocol::ACTIVITYPUB;
  76                 } else {
  77                         $protocol = $contact['network'];
  78                 }
  79
  80                 $importer_uid = $contact['uid'];
  81
  82                 $updated = DateTimeFormat::utcNow();
  83
  84                 if ($importer_uid == 0) {
  85                         Logger::log('Ignore public contacts');
  86
  87                         // set the last-update so we don't keep polling
  88                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
  89                         return;
  90                 }
  91
  92                 // Possibly switch the remote contact to AP
  93                 if ($protocol === Protocol::OSTATUS) {
  94                         ActivityPub\Receiver::switchContact($contact['id'], $importer_uid, $contact['url']);
  95                         $contact = DBA::selectFirst('contact', [], ['id' => $contact_id]);
  96                 }
  97
  98                 // load current friends if possible.
  99                 if (!empty($contact['poco']) && ($contact['success_update'] > $contact['failure_update'])) {
 100                         if (!DBA::exists('glink', ["`cid` = ? AND updated > UTC_TIMESTAMP() - INTERVAL 1 DAY", $contact['id']])) {
 101                                 PortableContact::loadWorker($contact['id'], $importer_uid, 0, $contact['poco']);
 102                         }
 103                 }
 104
 105                 // Don't poll if polling is deactivated (But we poll feeds and mails anyway)
 106                 if (!in_array($protocol, [Protocol::FEED, Protocol::MAIL]) && DI::config()->get('system', 'disable_polling')) {
 107                         Logger::log('Polling is disabled');
 108
 109                         // set the last-update so we don't keep polling
 110                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
 111                         return;
 112                 }
 113
 114                 // We don't poll AP contacts by now
 115                 if ($protocol === Protocol::ACTIVITYPUB) {
 116                         Logger::log("Don't poll AP contact");
 117
 118                         // set the last-update so we don't keep polling
 119                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
 120                         return;
 121                 }
 122
 123                 $importer = User::getOwnerDataById($importer_uid);
 124
 125                 if (empty($importer)) {
 126                         Logger::log('No self contact for user '.$importer_uid);
 127
 128                         // set the last-update so we don't keep polling
 129                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
 130                         return;
 131                 }
 132
 133                 $url = '';
 134                 $xml = false;
 135
 136                 if ($contact['subhub']) {
 137                         $poll_interval = DI::config()->get('system', 'pushpoll_frequency', 3);
 138                         $contact['priority'] = intval($poll_interval);
 139                         $hub_update = false;
 140
 141                         if (DateTimeFormat::utcNow() > DateTimeFormat::utc($contact['last-update'] . " + 1 day")) {
 142                                 $hub_update = true;
 143                         }
 144                 } else {
 145                         $hub_update = false;
 146                 }
 147
 148                 Logger::log("poll: ({$protocol}-{$contact['id']}) IMPORTER: {$importer['name']}, CONTACT: {$contact['name']}");
 149
 150                 $xml = '';
 151
 152                 if ($protocol === Protocol::DFRN) {
 153                         $xml = self::pollDFRN($contact, $updated);
 154                 } elseif (($protocol === Protocol::OSTATUS)
 155                         || ($protocol === Protocol::DIASPORA)
 156                         || ($protocol === Protocol::FEED)) {
 157                         $xml = self::pollFeed($contact, $protocol, $updated);
 158                 } elseif ($protocol === Protocol::MAIL) {
 159                         self::pollMail($contact, $importer_uid, $updated);
 160                 }
 161
 162                 if (!empty($xml)) {
 163                         Logger::log('received xml : ' . $xml, Logger::DATA);
 164                         if (!strstr($xml, '<')) {
 165                                 Logger::log('post_handshake: response from ' . $url . ' did not contain XML.');
 166
 167                                 $fields = ['last-update' => $updated, 'failure_update' => $updated];
 168                                 self::updateContact($contact, $fields);
 169                                 Contact::markForArchival($contact);
 170                                 return;
 171                         }
 172
 173
 174                         Logger::log("Consume feed of contact ".$contact['id']);
 175
 176                         consume_feed($xml, $importer, $contact, $hub);
 177
 178                         // do it a second time for DFRN so that any children find their parents.
 179                         if ($protocol === Protocol::DFRN) {
 180                                 consume_feed($xml, $importer, $contact, $hub);
 181                         }
 182
 183                         $hubmode = 'subscribe';
 184                         if ($protocol === Protocol::DFRN || $contact['blocked']) {
 185                                 $hubmode = 'unsubscribe';
 186                         }
 187
 188                         if (($protocol === Protocol::OSTATUS ||  $protocol == Protocol::FEED) && (! $contact['hub-verify'])) {
 189                                 $hub_update = true;
 190                         }
 191
 192                         if ($force) {
 193                                 $hub_update = true;
 194                         }
 195
 196                         Logger::log("Contact ".$contact['id']." returned hub: ".$hub." Network: ".$protocol." Relation: ".$contact['rel']." Update: ".$hub_update);
 197
 198                         if (strlen($hub) && $hub_update && (($contact['rel'] != Contact::FOLLOWER) || $protocol == Protocol::FEED)) {
 199                                 Logger::log('hub ' . $hubmode . ' : ' . $hub . ' contact name : ' . $contact['name'] . ' local user : ' . $importer['name']);
 200                                 $hubs = explode(',', $hub);
 201
 202                                 if (count($hubs)) {
 203                                         foreach ($hubs as $h) {
 204                                                 $h = trim($h);
 205
 206                                                 if (!strlen($h)) {
 207                                                         continue;
 208                                                 }
 209
 210                                                 subscribe_to_hub($h, $importer, $contact, $hubmode);
 211                                         }
 212                                 }
 213                         }
 214
 215                         self::updateContact($contact, ['last-update' => $updated, 'success_update' => $updated]);
 216                         Contact::unmarkForArchival($contact);
 217                 } elseif (in_array($contact["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, Protocol::FEED])) {
 218                         self::updateContact($contact, ['last-update' => $updated, 'failure_update' => $updated]);
 219                         Contact::markForArchival($contact);
 220                 } else {
 221                         self::updateContact($contact, ['last-update' => $updated]);
 222                 }
 223
 224                 Logger::log('End');
 225                 return;
 226         }
 227
 228         private static function RemoveReply($subject)
 229         {
 230                 while (in_array(strtolower(substr($subject, 0, 3)), ["re:", "aw:"])) {
 231                         $subject = trim(substr($subject, 4));
 232                 }
 233
 234                 return $subject;
 235         }
 236
 237         /**
 238          * Updates a personal contact entry and the public contact entry
 239          *
 240          * @param array $contact The personal contact entry
 241          * @param array $fields  The fields that are updated
 242          * @throws \Exception
 243          */
 244         private static function updateContact(array $contact, array $fields)
 245         {
 246                 DBA::update('contact', $fields, ['id' => $contact['id']]);
 247                 DBA::update('contact', $fields, ['uid' => 0, 'nurl' => $contact['nurl']]);
 248         }
 249
 250         /**
 251          * Poll DFRN contacts
 252          *
 253          * @param  array  $contact The personal contact entry
 254          * @param  string $updated The updated date
 255          * @return string polled XML
 256          * @throws \Exception
 257          */
 258         private static function pollDFRN(array $contact, $updated)
 259         {
 260                 $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 261                 if (intval($contact['duplex']) && $contact['dfrn-id']) {
 262                         $idtosend = '0:' . $orig_id;
 263                 }
 264                 if (intval($contact['duplex']) && $contact['issued-id']) {
 265                         $idtosend = '1:' . $orig_id;
 266                 }
 267
 268                 // they have permission to write to us. We already filtered this in the contact query.
 269                 $perm = 'rw';
 270
 271                 // But this may be our first communication, so set the writable flag if it isn't set already.
 272                 if (!intval($contact['writable'])) {
 273                         $fields = ['writable' => true];
 274                         DBA::update('contact', $fields, ['id' => $contact['id']]);
 275                 }
 276
 277                 $last_update = (($contact['last-update'] <= DBA::NULL_DATETIME)
 278                         ? DateTimeFormat::utc('now - 7 days', DateTimeFormat::ATOM)
 279                         : DateTimeFormat::utc($contact['last-update'], DateTimeFormat::ATOM)
 280                 );
 281
 282                 $url = $contact['poll'] . '?dfrn_id=' . $idtosend
 283                         . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 284                         . '&type=data&last_update=' . $last_update
 285                         . '&perm=' . $perm;
 286
 287                 $curlResult = Network::curl($url);
 288
 289                 if (!$curlResult->isSuccess() && ($curlResult->getErrorNumber() == CURLE_OPERATION_TIMEDOUT)) {
 290                         // set the last-update so we don't keep polling
 291                         self::updateContact($contact, ['last-update' => $updated]);
 292                         Contact::markForArchival($contact);
 293                         Logger::log('Contact archived');
 294                         return false;
 295                 }
 296
 297                 $handshake_xml = $curlResult->getBody();
 298                 $html_code = $curlResult->getReturnCode();
 299
 300                 Logger::log('handshake with url ' . $url . ' returns xml: ' . $handshake_xml, Logger::DATA);
 301
 302                 if (!strlen($handshake_xml) || ($html_code >= 400) || !$html_code) {
 303                         // dead connection - might be a transient event, or this might
 304                         // mean the software was uninstalled or the domain expired.
 305                         // Will keep trying for one month.
 306                         Logger::log("$url appears to be dead - marking for death ");
 307
 308                         // set the last-update so we don't keep polling
 309                         $fields = ['last-update' => $updated, 'failure_update' => $updated];
 310                         self::updateContact($contact, $fields);
 311                         Contact::markForArchival($contact);
 312                         return false;
 313                 }
 314
 315                 if (!strstr($handshake_xml, '<')) {
 316                         Logger::log('response from ' . $url . ' did not contain XML.');
 317
 318                         $fields = ['last-update' => $updated, 'failure_update' => $updated];
 319                         self::updateContact($contact, $fields);
 320                         Contact::markForArchival($contact);
 321                         return false;
 322                 }
 323
 324                 $res = XML::parseString($handshake_xml);
 325
 326                 if (!is_object($res)) {
 327                         Logger::info('Unparseable response', ['url' => $url]);
 328
 329                         $fields = ['last-update' => $updated, 'failure_update' => $updated];
 330                         self::updateContact($contact, $fields);
 331                         Contact::markForArchival($contact);
 332                         return false;
 333                 }
 334
 335                 if (intval($res->status) == 1) {
 336                         // we may not be friends anymore. Will keep trying for one month.
 337                         Logger::log("$url replied status 1 - marking for death ");
 338
 339                         // set the last-update so we don't keep polling
 340                         $fields = ['last-update' => $updated, 'failure_update' => $updated];
 341                         self::updateContact($contact, $fields);
 342                         Contact::markForArchival($contact);
 343                 } elseif ($contact['term-date'] > DBA::NULL_DATETIME) {
 344                         Contact::unmarkForArchival($contact);
 345                 }
 346
 347                 if ((intval($res->status) != 0) || !strlen($res->challenge) || !strlen($res->dfrn_id)) {
 348                         // set the last-update so we don't keep polling
 349                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
 350                         Logger::log('Contact status is ' . $res->status);
 351                         return false;
 352                 }
 353
 354                 if (((float)$res->dfrn_version > 2.21) && ($contact['poco'] == '')) {
 355                         $fields = ['poco' => str_replace('/profile/', '/poco/', $contact['url'])];
 356                         DBA::update('contact', $fields, ['id' => $contact['id']]);
 357                 }
 358
 359                 $postvars = [];
 360
 361                 $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
 362                 $challenge    = hex2bin((string) $res->challenge);
 363
 364                 $final_dfrn_id = '';
 365
 366                 if ($contact['duplex'] && strlen($contact['prvkey'])) {
 367                         openssl_private_decrypt($sent_dfrn_id, $final_dfrn_id, $contact['prvkey']);
 368                         openssl_private_decrypt($challenge, $postvars['challenge'], $contact['prvkey']);
 369                 } else {
 370                         openssl_public_decrypt($sent_dfrn_id, $final_dfrn_id, $contact['pubkey']);
 371                         openssl_public_decrypt($challenge, $postvars['challenge'], $contact['pubkey']);
 372                 }
 373
 374                 $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 375
 376                 if (strpos($final_dfrn_id, ':') == 1) {
 377                         $final_dfrn_id = substr($final_dfrn_id, 2);
 378                 }
 379
 380                 // There are issues with the legacy DFRN transport layer.
 381                 // Since we mostly don't use it anyway, we won't dig into it deeper, but simply ignore it.
 382                 if (empty($final_dfrn_id) || empty($orig_id)) {
 383                         Logger::log('Contact has got no ID - quitting');
 384                         return false;
 385                 }
 386
 387                 if ($final_dfrn_id != $orig_id) {
 388                         // did not decode properly - cannot trust this site
 389                         Logger::log('ID did not decode: ' . $contact['id'] . ' orig: ' . $orig_id . ' final: ' . $final_dfrn_id);
 390
 391                         // set the last-update so we don't keep polling
 392                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
 393                         Contact::markForArchival($contact);
 394                         return false;
 395                 }
 396
 397                 $postvars['dfrn_id'] = $idtosend;
 398                 $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 399                 $postvars['perm'] = 'rw';
 400
 401                 return Network::post($contact['poll'], $postvars)->getBody();
 402         }
 403
 404         /**
 405          * Poll Feed/OStatus contacts
 406          *
 407          * @param  array  $contact The personal contact entry
 408          * @param  string $protocol The used protocol of the contact
 409          * @param  string $updated The updated date
 410          * @return string polled XML
 411          * @throws \Exception
 412          */
 413         private static function pollFeed(array $contact, $protocol, $updated)
 414         {
 415                 // Upgrading DB fields from an older Friendica version
 416                 // Will only do this once per notify-enabled OStatus contact
 417                 // or if relationship changes
 418
 419                 $stat_writeable = ((($contact['notify']) && ($contact['rel'] == Contact::FOLLOWER || $contact['rel'] == Contact::FRIEND)) ? 1 : 0);
 420
 421                 // Contacts from OStatus are always writable
 422                 if ($protocol === Protocol::OSTATUS) {
 423                         $stat_writeable = 1;
 424                 }
 425
 426                 if ($stat_writeable != $contact['writable']) {
 427                         $fields = ['writable' => $stat_writeable];
 428                         DBA::update('contact', $fields, ['id' => $contact['id']]);
 429                 }
 430
 431                 // Are we allowed to import from this person?
 432                 if ($contact['rel'] == Contact::FOLLOWER || $contact['blocked']) {
 433                         // set the last-update so we don't keep polling
 434                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
 435                         Logger::log('Contact is blocked or only a follower');
 436                         return false;
 437                 }
 438
 439                 $cookiejar = tempnam(get_temppath(), 'cookiejar-onepoll-');
 440                 $curlResult = Network::curl($contact['poll'], false, ['cookiejar' => $cookiejar]);
 441                 unlink($cookiejar);
 442
 443                 if ($curlResult->isTimeout()) {
 444                         // set the last-update so we don't keep polling
 445                         self::updateContact($contact, ['last-update' => $updated]);
 446                         Contact::markForArchival($contact);
 447                         Logger::log('Contact archived');
 448                         return false;
 449                 }
 450
 451                 return $curlResult->getBody();
 452         }
 453
 454         /**
 455          * Poll Mail contacts
 456          *
 457          * @param  array   $contact      The personal contact entry
 458          * @param  integer $importer_uid The UID of the importer
 459          * @param  string  $updated      The updated date
 460          * @throws \Exception
 461          */
 462         private static function pollMail(array $contact, $importer_uid, $updated)
 463         {
 464                 Logger::log("Mail: Fetching for ".$contact['addr'], Logger::DEBUG);
 465
 466                 $mail_disabled = ((function_exists('imap_open') && !DI::config()->get('system', 'imap_disabled')) ? 0 : 1);
 467                 if ($mail_disabled) {
 468                         // set the last-update so we don't keep polling
 469                         self::updateContact($contact, ['last-update' => $updated]);
 470                         Contact::markForArchival($contact);
 471                         Logger::log('Contact archived');
 472                         return;
 473                 }
 474
 475                 Logger::log("Mail: Enabled", Logger::DEBUG);
 476
 477                 $mbox = null;
 478                 $user = DBA::selectFirst('user', ['prvkey'], ['uid' => $importer_uid]);
 479
 480                 $condition = ["`server` != '' AND `uid` = ?", $importer_uid];
 481                 $mailconf = DBA::selectFirst('mailacct', [], $condition);
 482                 if (DBA::isResult($user) && DBA::isResult($mailconf)) {
 483                         $mailbox = Email::constructMailboxName($mailconf);
 484                         $password = '';
 485                         openssl_private_decrypt(hex2bin($mailconf['pass']), $password, $user['prvkey']);
 486                         $mbox = Email::connect($mailbox, $mailconf['user'], $password);
 487                         unset($password);
 488                         Logger::log("Mail: Connect to " . $mailconf['user']);
 489                         if ($mbox) {
 490                                 $fields = ['last_check' => $updated];
 491                                 DBA::update('mailacct', $fields, ['id' => $mailconf['id']]);
 492                                 Logger::log("Mail: Connected to " . $mailconf['user']);
 493                         } else {
 494                                 Logger::log("Mail: Connection error ".$mailconf['user']." ".print_r(imap_errors(), true));
 495                         }
 496                 }
 497
 498                 if (!$mbox) {
 499                         return;
 500                 }
 501
 502                 $msgs = Email::poll($mbox, $contact['addr']);
 503
 504                 if (count($msgs)) {
 505                         Logger::log("Mail: Parsing ".count($msgs)." mails from ".$contact['addr']." for ".$mailconf['user'], Logger::DEBUG);
 506
 507                         $metas = Email::messageMeta($mbox, implode(',', $msgs));
 508
 509                         if (count($metas) != count($msgs)) {
 510                                 Logger::log("for " . $mailconf['user'] . " there are ". count($msgs) . " messages but received " . count($metas) . " metas", Logger::DEBUG);
 511                         } else {
 512                                 $msgs = array_combine($msgs, $metas);
 513
 514                                 foreach ($msgs as $msg_uid => $meta) {
 515                                         Logger::log("Mail: Parsing mail ".$msg_uid, Logger::DATA);
 516
 517                                         $datarray = [];
 518                                         $datarray['uid'] = $importer_uid;
 519                                         $datarray['contact-id'] = $contact['id'];
 520                                         $datarray['verb'] = Activity::POST;
 521                                         $datarray['object-type'] = Activity\ObjectType::NOTE;
 522                                         $datarray['network'] = Protocol::MAIL;
 523                                         // $meta = Email::messageMeta($mbox, $msg_uid);
 524
 525                                         $datarray['uri'] = Email::msgid2iri(trim($meta->message_id, '<>'));
 526
 527                                         // Have we seen it before?
 528                                         $fields = ['deleted', 'id'];
 529                                         $condition = ['uid' => $importer_uid, 'uri' => $datarray['uri']];
 530                                         $item = Item::selectFirst($fields, $condition);
 531                                         if (DBA::isResult($item)) {
 532                                                 Logger::log("Mail: Seen before ".$msg_uid." for ".$mailconf['user']." UID: ".$importer_uid." URI: ".$datarray['uri'],Logger::DEBUG);
 533
 534                                                 // Only delete when mails aren't automatically moved or deleted
 535                                                 if (($mailconf['action'] != 1) && ($mailconf['action'] != 3))
 536                                                         if ($meta->deleted && ! $item['deleted']) {
 537                                                                 $fields = ['deleted' => true, 'changed' => $updated];
 538                                                                 Item::update($fields, ['id' => $item['id']]);
 539                                                         }
 540
 541                                                 switch ($mailconf['action']) {
 542                                                         case 0:
 543                                                                 Logger::log("Mail: Seen before ".$msg_uid." for ".$mailconf['user'].". Doing nothing.", Logger::DEBUG);
 544                                                                 break;
 545                                                         case 1:
 546                                                                 Logger::log("Mail: Deleting ".$msg_uid." for ".$mailconf['user']);
 547                                                                 imap_delete($mbox, $msg_uid, FT_UID);
 548                                                                 break;
 549                                                         case 2:
 550                                                                 Logger::log("Mail: Mark as seen ".$msg_uid." for ".$mailconf['user']);
 551                                                                 imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 552                                                                 break;
 553                                                         case 3:
 554                                                                 Logger::log("Mail: Moving ".$msg_uid." to ".$mailconf['movetofolder']." for ".$mailconf['user']);
 555                                                                 imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 556                                                                 if ($mailconf['movetofolder'] != "") {
 557                                                                         imap_mail_move($mbox, $msg_uid, $mailconf['movetofolder'], FT_UID);
 558                                                                 }
 559                                                                 break;
 560                                                 }
 561                                                 continue;
 562                                         }
 563
 564                                         // look for a 'references' or an 'in-reply-to' header and try to match with a parent item we have locally.
 565                                         $raw_refs = (property_exists($meta, 'references') ? str_replace("\t", '', $meta->references) : '');
 566                                         if (!trim($raw_refs)) {
 567                                                 $raw_refs = (property_exists($meta, 'in_reply_to') ? str_replace("\t", '', $meta->in_reply_to) : '');
 568                                         }
 569                                         $raw_refs = trim($raw_refs);  // Don't allow a blank reference in $refs_arr
 570
 571                                         if ($raw_refs) {
 572                                                 $refs_arr = explode(' ', $raw_refs);
 573                                                 if (count($refs_arr)) {
 574                                                         for ($x = 0; $x < count($refs_arr); $x ++) {
 575                                                                 $refs_arr[$x] = Email::msgid2iri(str_replace(['<', '>', ' '],['', '', ''], $refs_arr[$x]));
 576                                                         }
 577                                                 }
 578                                                 $condition = ['uri' => $refs_arr, 'uid' => $importer_uid];
 579                                                 $parent = Item::selectFirst(['parent-uri'], $condition);
 580                                                 if (DBA::isResult($parent)) {
 581                                                         $datarray['parent-uri'] = $parent['parent-uri'];  // Set the parent as the top-level item
 582                                                 }
 583                                         }
 584
 585                                         // Decoding the header
 586                                         $subject = imap_mime_header_decode($meta->subject ?? '');
 587                                         $datarray['title'] = "";
 588                                         foreach ($subject as $subpart) {
 589                                                 if ($subpart->charset != "default") {
 590                                                         $datarray['title'] .= iconv($subpart->charset, 'UTF-8//IGNORE', $subpart->text);
 591                                                 } else {
 592                                                         $datarray['title'] .= $subpart->text;
 593                                                 }
 594                                         }
 595                                         $datarray['title'] = Strings::escapeTags(trim($datarray['title']));
 596
 597                                         //$datarray['title'] = Strings::escapeTags(trim($meta->subject));
 598                                         $datarray['created'] = DateTimeFormat::utc($meta->date);
 599
 600                                         // Is it a reply?
 601                                         $reply = ((substr(strtolower($datarray['title']), 0, 3) == "re:") ||
 602                                                 (substr(strtolower($datarray['title']), 0, 3) == "re-") ||
 603                                                 ($raw_refs != ""));
 604
 605                                         // Remove Reply-signs in the subject
 606                                         $datarray['title'] = self::RemoveReply($datarray['title']);
 607
 608                                         // If it seems to be a reply but a header couldn't be found take the last message with matching subject
 609                                         if (empty($datarray['parent-uri']) && $reply) {
 610                                                 $condition = ['title' => $datarray['title'], 'uid' => $importer_uid, 'network' => Protocol::MAIL];
 611                                                 $params = ['order' => ['created' => true]];
 612                                                 $parent = Item::selectFirst(['parent-uri'], $condition, $params);
 613                                                 if (DBA::isResult($parent)) {
 614                                                         $datarray['parent-uri'] = $parent['parent-uri'];
 615                                                 }
 616                                         }
 617
 618                                         if (empty($datarray['parent-uri'])) {
 619                                                 $datarray['parent-uri'] = $datarray['uri'];
 620                                         }
 621
 622                                         $headers = imap_headerinfo($mbox, $meta->msgno);
 623
 624                                         $object = [];
 625
 626                                         if (!empty($headers->from)) {
 627                                                 $object['from'] = $headers->from;
 628                                         }
 629
 630                                         if (!empty($headers->to)) {
 631                                                 $object['to'] = $headers->to;
 632                                         }
 633
 634                                         if (!empty($headers->reply_to)) {
 635                                                 $object['reply_to'] = $headers->reply_to;
 636                                         }
 637
 638                                         if (!empty($headers->sender)) {
 639                                                 $object['sender'] = $headers->sender;
 640                                         }
 641
 642                                         if (!empty($object)) {
 643                                                 $datarray['object'] = json_encode($object);
 644                                         }
 645
 646                                         $fromname = $frommail = $headers->from[0]->mailbox . '@' . $headers->from[0]->host;
 647                                         if (!empty($headers->from[0]->personal)) {
 648                                                 $fromname = $headers->from[0]->personal;
 649                                         }
 650
 651                                         $datarray['author-name'] = $fromname;
 652                                         $datarray['author-link'] = "mailto:".$frommail;
 653                                         $datarray['author-avatar'] = $contact['photo'];
 654
 655                                         $datarray['owner-name'] = $contact['name'];
 656                                         $datarray['owner-link'] = "mailto:".$contact['addr'];
 657                                         $datarray['owner-avatar'] = $contact['photo'];
 658
 659                                         if ($datarray['parent-uri'] === $datarray['uri']) {
 660                                                 $datarray['private'] = 1;
 661                                         }
 662
 663                                         if (!DI::pConfig()->get($importer_uid, 'system', 'allow_public_email_replies')) {
 664                                                 $datarray['private'] = 1;
 665                                                 $datarray['allow_cid'] = '<' . $contact['id'] . '>';
 666                                         }
 667
 668                                         $datarray = Email::getMessage($mbox, $msg_uid, $reply, $datarray);
 669                                         if (empty($datarray['body'])) {
 670                                                 Logger::log("Mail: can't fetch msg ".$msg_uid." for ".$mailconf['user']);
 671                                                 continue;
 672                                         }
 673
 674                                         Logger::log("Mail: Importing ".$msg_uid." for ".$mailconf['user']);
 675
 676                                         Item::insert($datarray);
 677
 678                                         switch ($mailconf['action']) {
 679                                                 case 0:
 680                                                         Logger::log("Mail: Seen before ".$msg_uid." for ".$mailconf['user'].". Doing nothing.", Logger::DEBUG);
 681                                                         break;
 682                                                 case 1:
 683                                                         Logger::log("Mail: Deleting ".$msg_uid." for ".$mailconf['user']);
 684                                                         imap_delete($mbox, $msg_uid, FT_UID);
 685                                                         break;
 686                                                 case 2:
 687                                                         Logger::log("Mail: Mark as seen ".$msg_uid." for ".$mailconf['user']);
 688                                                         imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 689                                                         break;
 690                                                 case 3:
 691                                                         Logger::log("Mail: Moving ".$msg_uid." to ".$mailconf['movetofolder']." for ".$mailconf['user']);
 692                                                         imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 693                                                         if ($mailconf['movetofolder'] != "") {
 694                                                                 imap_mail_move($mbox, $msg_uid, $mailconf['movetofolder'], FT_UID);
 695                                                         }
 696                                                         break;
 697                                         }
 698                                 }
 699                         }
 700                 } else {
 701                         Logger::log("Mail: no mails for ".$mailconf['user']);
 702                 }
 703
 704                 Logger::log("Mail: closing connection for ".$mailconf['user']);
 705                 imap_close($mbox);
 706         }
 707 }