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\Feed;
  35 use Friendica\Protocol\PortableContact;
  36 use Friendica\Util\DateTimeFormat;
  37 use Friendica\Util\Network;
  38 use Friendica\Util\Strings;
  39 use Friendica\Util\XML;
  40
  41 class OnePoll
  42 {
  43         public static function execute($contact_id = 0, $command = '')
  44         {
  45                 Logger::log('Start for contact ' . $contact_id);
  46
  47                 $force = false;
  48
  49                 if ($command == "force") {
  50                         $force = true;
  51                 }
  52
  53                 if (!$contact_id) {
  54                         Logger::log('no contact');
  55                         return;
  56                 }
  57
  58
  59                 $contact = DBA::selectFirst('contact', [], ['id' => $contact_id]);
  60                 if (!DBA::isResult($contact)) {
  61                         Logger::log('Contact not found or cannot be used.');
  62                         return;
  63                 }
  64
  65                 if (($contact['network'] != Protocol::MAIL) || $force) {
  66                         Contact::updateFromProbe($contact_id, '', $force);
  67                 }
  68
  69                 // Special treatment for wrongly detected local contacts
  70                 if (!$force && ($contact['network'] != Protocol::DFRN) && Contact::isLocalById($contact_id)) {
  71                         Contact::updateFromProbe($contact_id, Protocol::DFRN, true);
  72                         $contact = DBA::selectFirst('contact', [], ['id' => $contact_id]);
  73                 }
  74
  75                 if (($contact['network'] == Protocol::DFRN) && !Contact::isLegacyDFRNContact($contact)) {
  76                         $protocol = Protocol::ACTIVITYPUB;
  77                 } else {
  78                         $protocol = $contact['network'];
  79                 }
  80
  81                 $importer_uid = $contact['uid'];
  82
  83                 $updated = DateTimeFormat::utcNow();
  84
  85                 if ($importer_uid == 0) {
  86                         Logger::log('Ignore public contacts');
  87
  88                         // set the last-update so we don't keep polling
  89                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
  90                         return;
  91                 }
  92
  93                 // Possibly switch the remote contact to AP
  94                 if ($protocol === Protocol::OSTATUS) {
  95                         ActivityPub\Receiver::switchContact($contact['id'], $importer_uid, $contact['url']);
  96                         $contact = DBA::selectFirst('contact', [], ['id' => $contact_id]);
  97                 }
  98
  99                 // load current friends if possible.
 100                 if (!empty($contact['poco']) && ($contact['success_update'] > $contact['failure_update'])) {
 101                         if (!DBA::exists('glink', ["`cid` = ? AND updated > UTC_TIMESTAMP() - INTERVAL 1 DAY", $contact['id']])) {
 102                                 PortableContact::loadWorker($contact['id'], $importer_uid, 0, $contact['poco']);
 103                         }
 104                 }
 105
 106                 // Don't poll if polling is deactivated (But we poll feeds and mails anyway)
 107                 if (!in_array($protocol, [Protocol::FEED, Protocol::MAIL]) && DI::config()->get('system', 'disable_polling')) {
 108                         Logger::log('Polling is disabled');
 109
 110                         // set the last-update so we don't keep polling
 111                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
 112                         return;
 113                 }
 114
 115                 // We don't poll AP contacts by now
 116                 if ($protocol === Protocol::ACTIVITYPUB) {
 117                         Logger::log("Don't poll AP contact");
 118
 119                         // set the last-update so we don't keep polling
 120                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
 121                         return;
 122                 }
 123
 124                 $importer = User::getOwnerDataById($importer_uid);
 125
 126                 if (empty($importer)) {
 127                         Logger::log('No self contact for user '.$importer_uid);
 128
 129                         // set the last-update so we don't keep polling
 130                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
 131                         return;
 132                 }
 133
 134                 $url = '';
 135                 $xml = false;
 136
 137                 if ($contact['subhub']) {
 138                         $poll_interval = DI::config()->get('system', 'pushpoll_frequency', 3);
 139                         $contact['priority'] = intval($poll_interval);
 140                         $hub_update = false;
 141
 142                         if (DateTimeFormat::utcNow() > DateTimeFormat::utc($contact['last-update'] . " + 1 day")) {
 143                                 $hub_update = true;
 144                         }
 145                 } else {
 146                         $hub_update = false;
 147                 }
 148
 149                 Logger::log("poll: ({$protocol}-{$contact['id']}) IMPORTER: {$importer['name']}, CONTACT: {$contact['name']}");
 150
 151                 $xml = '';
 152
 153                 if ($protocol === Protocol::DFRN) {
 154                         $xml = self::pollDFRN($contact, $updated);
 155                 } elseif (($protocol === Protocol::OSTATUS)
 156                         || ($protocol === Protocol::DIASPORA)
 157                         || ($protocol === Protocol::FEED)) {
 158                         $xml = self::pollFeed($contact, $protocol, $updated);
 159                 } elseif ($protocol === Protocol::MAIL) {
 160                         self::pollMail($contact, $importer_uid, $updated);
 161                 }
 162
 163                 if (!empty($xml)) {
 164                         Logger::log('received xml : ' . $xml, Logger::DATA);
 165                         if (!strstr($xml, '<')) {
 166                                 Logger::log('post_handshake: response from ' . $url . ' did not contain XML.');
 167
 168                                 $fields = ['last-update' => $updated, 'failure_update' => $updated];
 169                                 self::updateContact($contact, $fields);
 170                                 Contact::markForArchival($contact);
 171                                 return;
 172                         }
 173
 174
 175                         Logger::log("Consume feed of contact ".$contact['id']);
 176
 177                         Feed::consume($xml, $importer, $contact, $hub);
 178
 179                         // do it a second time for DFRN so that any children find their parents.
 180                         if ($protocol === Protocol::DFRN) {
 181                                 Feed::consume($xml, $importer, $contact, $hub);
 182                         }
 183
 184                         $hubmode = 'subscribe';
 185                         if ($protocol === Protocol::DFRN || $contact['blocked']) {
 186                                 $hubmode = 'unsubscribe';
 187                         }
 188
 189                         if (($protocol === Protocol::OSTATUS ||  $protocol == Protocol::FEED) && (! $contact['hub-verify'])) {
 190                                 $hub_update = true;
 191                         }
 192
 193                         if ($force) {
 194                                 $hub_update = true;
 195                         }
 196
 197                         Logger::log("Contact ".$contact['id']." returned hub: ".$hub." Network: ".$protocol." Relation: ".$contact['rel']." Update: ".$hub_update);
 198
 199                         if (strlen($hub) && $hub_update && (($contact['rel'] != Contact::FOLLOWER) || $protocol == Protocol::FEED)) {
 200                                 Logger::log('hub ' . $hubmode . ' : ' . $hub . ' contact name : ' . $contact['name'] . ' local user : ' . $importer['name']);
 201                                 $hubs = explode(',', $hub);
 202
 203                                 if (count($hubs)) {
 204                                         foreach ($hubs as $h) {
 205                                                 $h = trim($h);
 206
 207                                                 if (!strlen($h)) {
 208                                                         continue;
 209                                                 }
 210
 211                                                 self::subscribeToHub($h, $importer, $contact, $hubmode);
 212                                         }
 213                                 }
 214                         }
 215
 216                         self::updateContact($contact, ['last-update' => $updated, 'success_update' => $updated]);
 217                         Contact::unmarkForArchival($contact);
 218                 } elseif (in_array($contact["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, Protocol::FEED])) {
 219                         self::updateContact($contact, ['last-update' => $updated, 'failure_update' => $updated]);
 220                         Contact::markForArchival($contact);
 221                 } else {
 222                         self::updateContact($contact, ['last-update' => $updated]);
 223                 }
 224
 225                 Logger::log('End');
 226                 return;
 227         }
 228
 229         private static function RemoveReply($subject)
 230         {
 231                 while (in_array(strtolower(substr($subject, 0, 3)), ["re:", "aw:"])) {
 232                         $subject = trim(substr($subject, 4));
 233                 }
 234
 235                 return $subject;
 236         }
 237
 238         /**
 239          * Updates a personal contact entry and the public contact entry
 240          *
 241          * @param array $contact The personal contact entry
 242          * @param array $fields  The fields that are updated
 243          * @throws \Exception
 244          */
 245         private static function updateContact(array $contact, array $fields)
 246         {
 247                 DBA::update('contact', $fields, ['id' => $contact['id']]);
 248                 DBA::update('contact', $fields, ['uid' => 0, 'nurl' => $contact['nurl']]);
 249         }
 250
 251         /**
 252          * Poll DFRN contacts
 253          *
 254          * @param  array  $contact The personal contact entry
 255          * @param  string $updated The updated date
 256          * @return string polled XML
 257          * @throws \Exception
 258          */
 259         private static function pollDFRN(array $contact, $updated)
 260         {
 261                 $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 262                 if (intval($contact['duplex']) && $contact['dfrn-id']) {
 263                         $idtosend = '0:' . $orig_id;
 264                 }
 265                 if (intval($contact['duplex']) && $contact['issued-id']) {
 266                         $idtosend = '1:' . $orig_id;
 267                 }
 268
 269                 // they have permission to write to us. We already filtered this in the contact query.
 270                 $perm = 'rw';
 271
 272                 // But this may be our first communication, so set the writable flag if it isn't set already.
 273                 if (!intval($contact['writable'])) {
 274                         $fields = ['writable' => true];
 275                         DBA::update('contact', $fields, ['id' => $contact['id']]);
 276                 }
 277
 278                 $last_update = (($contact['last-update'] <= DBA::NULL_DATETIME)
 279                         ? DateTimeFormat::utc('now - 7 days', DateTimeFormat::ATOM)
 280                         : DateTimeFormat::utc($contact['last-update'], DateTimeFormat::ATOM)
 281                 );
 282
 283                 $url = $contact['poll'] . '?dfrn_id=' . $idtosend
 284                         . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 285                         . '&type=data&last_update=' . $last_update
 286                         . '&perm=' . $perm;
 287
 288                 $curlResult = Network::curl($url);
 289
 290                 if (!$curlResult->isSuccess() && ($curlResult->getErrorNumber() == CURLE_OPERATION_TIMEDOUT)) {
 291                         // set the last-update so we don't keep polling
 292                         self::updateContact($contact, ['last-update' => $updated]);
 293                         Contact::markForArchival($contact);
 294                         Logger::log('Contact archived');
 295                         return false;
 296                 }
 297
 298                 $handshake_xml = $curlResult->getBody();
 299                 $html_code = $curlResult->getReturnCode();
 300
 301                 Logger::log('handshake with url ' . $url . ' returns xml: ' . $handshake_xml, Logger::DATA);
 302
 303                 if (!strlen($handshake_xml) || ($html_code >= 400) || !$html_code) {
 304                         // dead connection - might be a transient event, or this might
 305                         // mean the software was uninstalled or the domain expired.
 306                         // Will keep trying for one month.
 307                         Logger::log("$url appears to be dead - marking for death ");
 308
 309                         // set the last-update so we don't keep polling
 310                         $fields = ['last-update' => $updated, 'failure_update' => $updated];
 311                         self::updateContact($contact, $fields);
 312                         Contact::markForArchival($contact);
 313                         return false;
 314                 }
 315
 316                 if (!strstr($handshake_xml, '<')) {
 317                         Logger::log('response from ' . $url . ' did not contain XML.');
 318
 319                         $fields = ['last-update' => $updated, 'failure_update' => $updated];
 320                         self::updateContact($contact, $fields);
 321                         Contact::markForArchival($contact);
 322                         return false;
 323                 }
 324
 325                 $res = XML::parseString($handshake_xml);
 326
 327                 if (!is_object($res)) {
 328                         Logger::info('Unparseable response', ['url' => $url]);
 329
 330                         $fields = ['last-update' => $updated, 'failure_update' => $updated];
 331                         self::updateContact($contact, $fields);
 332                         Contact::markForArchival($contact);
 333                         return false;
 334                 }
 335
 336                 if (intval($res->status) == 1) {
 337                         // we may not be friends anymore. Will keep trying for one month.
 338                         Logger::log("$url replied status 1 - marking for death ");
 339
 340                         // set the last-update so we don't keep polling
 341                         $fields = ['last-update' => $updated, 'failure_update' => $updated];
 342                         self::updateContact($contact, $fields);
 343                         Contact::markForArchival($contact);
 344                 } elseif ($contact['term-date'] > DBA::NULL_DATETIME) {
 345                         Contact::unmarkForArchival($contact);
 346                 }
 347
 348                 if ((intval($res->status) != 0) || !strlen($res->challenge) || !strlen($res->dfrn_id)) {
 349                         // set the last-update so we don't keep polling
 350                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
 351                         Logger::log('Contact status is ' . $res->status);
 352                         return false;
 353                 }
 354
 355                 if (((float)$res->dfrn_version > 2.21) && ($contact['poco'] == '')) {
 356                         $fields = ['poco' => str_replace('/profile/', '/poco/', $contact['url'])];
 357                         DBA::update('contact', $fields, ['id' => $contact['id']]);
 358                 }
 359
 360                 $postvars = [];
 361
 362                 $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
 363                 $challenge    = hex2bin((string) $res->challenge);
 364
 365                 $final_dfrn_id = '';
 366
 367                 if ($contact['duplex'] && strlen($contact['prvkey'])) {
 368                         openssl_private_decrypt($sent_dfrn_id, $final_dfrn_id, $contact['prvkey']);
 369                         openssl_private_decrypt($challenge, $postvars['challenge'], $contact['prvkey']);
 370                 } else {
 371                         openssl_public_decrypt($sent_dfrn_id, $final_dfrn_id, $contact['pubkey']);
 372                         openssl_public_decrypt($challenge, $postvars['challenge'], $contact['pubkey']);
 373                 }
 374
 375                 $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 376
 377                 if (strpos($final_dfrn_id, ':') == 1) {
 378                         $final_dfrn_id = substr($final_dfrn_id, 2);
 379                 }
 380
 381                 // There are issues with the legacy DFRN transport layer.
 382                 // Since we mostly don't use it anyway, we won't dig into it deeper, but simply ignore it.
 383                 if (empty($final_dfrn_id) || empty($orig_id)) {
 384                         Logger::log('Contact has got no ID - quitting');
 385                         return false;
 386                 }
 387
 388                 if ($final_dfrn_id != $orig_id) {
 389                         // did not decode properly - cannot trust this site
 390                         Logger::log('ID did not decode: ' . $contact['id'] . ' orig: ' . $orig_id . ' final: ' . $final_dfrn_id);
 391
 392                         // set the last-update so we don't keep polling
 393                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
 394                         Contact::markForArchival($contact);
 395                         return false;
 396                 }
 397
 398                 $postvars['dfrn_id'] = $idtosend;
 399                 $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 400                 $postvars['perm'] = 'rw';
 401
 402                 return Network::post($contact['poll'], $postvars)->getBody();
 403         }
 404
 405         /**
 406          * Poll Feed/OStatus contacts
 407          *
 408          * @param  array  $contact The personal contact entry
 409          * @param  string $protocol The used protocol of the contact
 410          * @param  string $updated The updated date
 411          * @return string polled XML
 412          * @throws \Exception
 413          */
 414         private static function pollFeed(array $contact, $protocol, $updated)
 415         {
 416                 // Upgrading DB fields from an older Friendica version
 417                 // Will only do this once per notify-enabled OStatus contact
 418                 // or if relationship changes
 419
 420                 $stat_writeable = ((($contact['notify']) && ($contact['rel'] == Contact::FOLLOWER || $contact['rel'] == Contact::FRIEND)) ? 1 : 0);
 421
 422                 // Contacts from OStatus are always writable
 423                 if ($protocol === Protocol::OSTATUS) {
 424                         $stat_writeable = 1;
 425                 }
 426
 427                 if ($stat_writeable != $contact['writable']) {
 428                         $fields = ['writable' => $stat_writeable];
 429                         DBA::update('contact', $fields, ['id' => $contact['id']]);
 430                 }
 431
 432                 // Are we allowed to import from this person?
 433                 if ($contact['rel'] == Contact::FOLLOWER || $contact['blocked']) {
 434                         // set the last-update so we don't keep polling
 435                         DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
 436                         Logger::log('Contact is blocked or only a follower');
 437                         return false;
 438                 }
 439
 440                 $cookiejar = tempnam(get_temppath(), 'cookiejar-onepoll-');
 441                 $curlResult = Network::curl($contact['poll'], false, ['cookiejar' => $cookiejar]);
 442                 unlink($cookiejar);
 443
 444                 if ($curlResult->isTimeout()) {
 445                         // set the last-update so we don't keep polling
 446                         self::updateContact($contact, ['last-update' => $updated]);
 447                         Contact::markForArchival($contact);
 448                         Logger::log('Contact archived');
 449                         return false;
 450                 }
 451
 452                 return $curlResult->getBody();
 453         }
 454
 455         /**
 456          * Poll Mail contacts
 457          *
 458          * @param  array   $contact      The personal contact entry
 459          * @param  integer $importer_uid The UID of the importer
 460          * @param  string  $updated      The updated date
 461          * @throws \Exception
 462          */
 463         private static function pollMail(array $contact, $importer_uid, $updated)
 464         {
 465                 Logger::log("Mail: Fetching for ".$contact['addr'], Logger::DEBUG);
 466
 467                 $mail_disabled = ((function_exists('imap_open') && !DI::config()->get('system', 'imap_disabled')) ? 0 : 1);
 468                 if ($mail_disabled) {
 469                         // set the last-update so we don't keep polling
 470                         self::updateContact($contact, ['last-update' => $updated]);
 471                         Contact::markForArchival($contact);
 472                         Logger::log('Contact archived');
 473                         return;
 474                 }
 475
 476                 Logger::log("Mail: Enabled", Logger::DEBUG);
 477
 478                 $mbox = null;
 479                 $user = DBA::selectFirst('user', ['prvkey'], ['uid' => $importer_uid]);
 480
 481                 $condition = ["`server` != '' AND `uid` = ?", $importer_uid];
 482                 $mailconf = DBA::selectFirst('mailacct', [], $condition);
 483                 if (DBA::isResult($user) && DBA::isResult($mailconf)) {
 484                         $mailbox = Email::constructMailboxName($mailconf);
 485                         $password = '';
 486                         openssl_private_decrypt(hex2bin($mailconf['pass']), $password, $user['prvkey']);
 487                         $mbox = Email::connect($mailbox, $mailconf['user'], $password);
 488                         unset($password);
 489                         Logger::log("Mail: Connect to " . $mailconf['user']);
 490                         if ($mbox) {
 491                                 $fields = ['last_check' => $updated];
 492                                 DBA::update('mailacct', $fields, ['id' => $mailconf['id']]);
 493                                 Logger::log("Mail: Connected to " . $mailconf['user']);
 494                         } else {
 495                                 Logger::log("Mail: Connection error ".$mailconf['user']." ".print_r(imap_errors(), true));
 496                         }
 497                 }
 498
 499                 if (!$mbox) {
 500                         return;
 501                 }
 502
 503                 $msgs = Email::poll($mbox, $contact['addr']);
 504
 505                 if (count($msgs)) {
 506                         Logger::log("Mail: Parsing ".count($msgs)." mails from ".$contact['addr']." for ".$mailconf['user'], Logger::DEBUG);
 507
 508                         $metas = Email::messageMeta($mbox, implode(',', $msgs));
 509
 510                         if (count($metas) != count($msgs)) {
 511                                 Logger::log("for " . $mailconf['user'] . " there are ". count($msgs) . " messages but received " . count($metas) . " metas", Logger::DEBUG);
 512                         } else {
 513                                 $msgs = array_combine($msgs, $metas);
 514
 515                                 foreach ($msgs as $msg_uid => $meta) {
 516                                         Logger::log("Mail: Parsing mail ".$msg_uid, Logger::DATA);
 517
 518                                         $datarray = [];
 519                                         $datarray['uid'] = $importer_uid;
 520                                         $datarray['contact-id'] = $contact['id'];
 521                                         $datarray['verb'] = Activity::POST;
 522                                         $datarray['object-type'] = Activity\ObjectType::NOTE;
 523                                         $datarray['network'] = Protocol::MAIL;
 524                                         // $meta = Email::messageMeta($mbox, $msg_uid);
 525
 526                                         $datarray['uri'] = Email::msgid2iri(trim($meta->message_id, '<>'));
 527
 528                                         // Have we seen it before?
 529                                         $fields = ['deleted', 'id'];
 530                                         $condition = ['uid' => $importer_uid, 'uri' => $datarray['uri']];
 531                                         $item = Item::selectFirst($fields, $condition);
 532                                         if (DBA::isResult($item)) {
 533                                                 Logger::log("Mail: Seen before ".$msg_uid." for ".$mailconf['user']." UID: ".$importer_uid." URI: ".$datarray['uri'],Logger::DEBUG);
 534
 535                                                 // Only delete when mails aren't automatically moved or deleted
 536                                                 if (($mailconf['action'] != 1) && ($mailconf['action'] != 3))
 537                                                         if ($meta->deleted && ! $item['deleted']) {
 538                                                                 $fields = ['deleted' => true, 'changed' => $updated];
 539                                                                 Item::update($fields, ['id' => $item['id']]);
 540                                                         }
 541
 542                                                 switch ($mailconf['action']) {
 543                                                         case 0:
 544                                                                 Logger::log("Mail: Seen before ".$msg_uid." for ".$mailconf['user'].". Doing nothing.", Logger::DEBUG);
 545                                                                 break;
 546                                                         case 1:
 547                                                                 Logger::log("Mail: Deleting ".$msg_uid." for ".$mailconf['user']);
 548                                                                 imap_delete($mbox, $msg_uid, FT_UID);
 549                                                                 break;
 550                                                         case 2:
 551                                                                 Logger::log("Mail: Mark as seen ".$msg_uid." for ".$mailconf['user']);
 552                                                                 imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 553                                                                 break;
 554                                                         case 3:
 555                                                                 Logger::log("Mail: Moving ".$msg_uid." to ".$mailconf['movetofolder']." for ".$mailconf['user']);
 556                                                                 imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 557                                                                 if ($mailconf['movetofolder'] != "") {
 558                                                                         imap_mail_move($mbox, $msg_uid, $mailconf['movetofolder'], FT_UID);
 559                                                                 }
 560                                                                 break;
 561                                                 }
 562                                                 continue;
 563                                         }
 564
 565                                         // look for a 'references' or an 'in-reply-to' header and try to match with a parent item we have locally.
 566                                         $raw_refs = (property_exists($meta, 'references') ? str_replace("\t", '', $meta->references) : '');
 567                                         if (!trim($raw_refs)) {
 568                                                 $raw_refs = (property_exists($meta, 'in_reply_to') ? str_replace("\t", '', $meta->in_reply_to) : '');
 569                                         }
 570                                         $raw_refs = trim($raw_refs);  // Don't allow a blank reference in $refs_arr
 571
 572                                         if ($raw_refs) {
 573                                                 $refs_arr = explode(' ', $raw_refs);
 574                                                 if (count($refs_arr)) {
 575                                                         for ($x = 0; $x < count($refs_arr); $x ++) {
 576                                                                 $refs_arr[$x] = Email::msgid2iri(str_replace(['<', '>', ' '],['', '', ''], $refs_arr[$x]));
 577                                                         }
 578                                                 }
 579                                                 $condition = ['uri' => $refs_arr, 'uid' => $importer_uid];
 580                                                 $parent = Item::selectFirst(['parent-uri'], $condition);
 581                                                 if (DBA::isResult($parent)) {
 582                                                         $datarray['parent-uri'] = $parent['parent-uri'];  // Set the parent as the top-level item
 583                                                 }
 584                                         }
 585
 586                                         // Decoding the header
 587                                         $subject = imap_mime_header_decode($meta->subject ?? '');
 588                                         $datarray['title'] = "";
 589                                         foreach ($subject as $subpart) {
 590                                                 if ($subpart->charset != "default") {
 591                                                         $datarray['title'] .= iconv($subpart->charset, 'UTF-8//IGNORE', $subpart->text);
 592                                                 } else {
 593                                                         $datarray['title'] .= $subpart->text;
 594                                                 }
 595                                         }
 596                                         $datarray['title'] = Strings::escapeTags(trim($datarray['title']));
 597
 598                                         //$datarray['title'] = Strings::escapeTags(trim($meta->subject));
 599                                         $datarray['created'] = DateTimeFormat::utc($meta->date);
 600
 601                                         // Is it a reply?
 602                                         $reply = ((substr(strtolower($datarray['title']), 0, 3) == "re:") ||
 603                                                 (substr(strtolower($datarray['title']), 0, 3) == "re-") ||
 604                                                 ($raw_refs != ""));
 605
 606                                         // Remove Reply-signs in the subject
 607                                         $datarray['title'] = self::RemoveReply($datarray['title']);
 608
 609                                         // If it seems to be a reply but a header couldn't be found take the last message with matching subject
 610                                         if (empty($datarray['parent-uri']) && $reply) {
 611                                                 $condition = ['title' => $datarray['title'], 'uid' => $importer_uid, 'network' => Protocol::MAIL];
 612                                                 $params = ['order' => ['created' => true]];
 613                                                 $parent = Item::selectFirst(['parent-uri'], $condition, $params);
 614                                                 if (DBA::isResult($parent)) {
 615                                                         $datarray['parent-uri'] = $parent['parent-uri'];
 616                                                 }
 617                                         }
 618
 619                                         if (empty($datarray['parent-uri'])) {
 620                                                 $datarray['parent-uri'] = $datarray['uri'];
 621                                         }
 622
 623                                         $headers = imap_headerinfo($mbox, $meta->msgno);
 624
 625                                         $object = [];
 626
 627                                         if (!empty($headers->from)) {
 628                                                 $object['from'] = $headers->from;
 629                                         }
 630
 631                                         if (!empty($headers->to)) {
 632                                                 $object['to'] = $headers->to;
 633                                         }
 634
 635                                         if (!empty($headers->reply_to)) {
 636                                                 $object['reply_to'] = $headers->reply_to;
 637                                         }
 638
 639                                         if (!empty($headers->sender)) {
 640                                                 $object['sender'] = $headers->sender;
 641                                         }
 642
 643                                         if (!empty($object)) {
 644                                                 $datarray['object'] = json_encode($object);
 645                                         }
 646
 647                                         $fromname = $frommail = $headers->from[0]->mailbox . '@' . $headers->from[0]->host;
 648                                         if (!empty($headers->from[0]->personal)) {
 649                                                 $fromname = $headers->from[0]->personal;
 650                                         }
 651
 652                                         $datarray['author-name'] = $fromname;
 653                                         $datarray['author-link'] = "mailto:".$frommail;
 654                                         $datarray['author-avatar'] = $contact['photo'];
 655
 656                                         $datarray['owner-name'] = $contact['name'];
 657                                         $datarray['owner-link'] = "mailto:".$contact['addr'];
 658                                         $datarray['owner-avatar'] = $contact['photo'];
 659
 660                                         if ($datarray['parent-uri'] === $datarray['uri']) {
 661                                                 $datarray['private'] = Item::PRIVATE;
 662                                         }
 663
 664                                         if (!DI::pConfig()->get($importer_uid, 'system', 'allow_public_email_replies')) {
 665                                                 $datarray['private'] = Item::PRIVATE;
 666                                                 $datarray['allow_cid'] = '<' . $contact['id'] . '>';
 667                                         }
 668
 669                                         $datarray = Email::getMessage($mbox, $msg_uid, $reply, $datarray);
 670                                         if (empty($datarray['body'])) {
 671                                                 Logger::log("Mail: can't fetch msg ".$msg_uid." for ".$mailconf['user']);
 672                                                 continue;
 673                                         }
 674
 675                                         Logger::log("Mail: Importing ".$msg_uid." for ".$mailconf['user']);
 676
 677                                         Item::insert($datarray);
 678
 679                                         switch ($mailconf['action']) {
 680                                                 case 0:
 681                                                         Logger::log("Mail: Seen before ".$msg_uid." for ".$mailconf['user'].". Doing nothing.", Logger::DEBUG);
 682                                                         break;
 683                                                 case 1:
 684                                                         Logger::log("Mail: Deleting ".$msg_uid." for ".$mailconf['user']);
 685                                                         imap_delete($mbox, $msg_uid, FT_UID);
 686                                                         break;
 687                                                 case 2:
 688                                                         Logger::log("Mail: Mark as seen ".$msg_uid." for ".$mailconf['user']);
 689                                                         imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 690                                                         break;
 691                                                 case 3:
 692                                                         Logger::log("Mail: Moving ".$msg_uid." to ".$mailconf['movetofolder']." for ".$mailconf['user']);
 693                                                         imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 694                                                         if ($mailconf['movetofolder'] != "") {
 695                                                                 imap_mail_move($mbox, $msg_uid, $mailconf['movetofolder'], FT_UID);
 696                                                         }
 697                                                         break;
 698                                         }
 699                                 }
 700                         }
 701                 } else {
 702                         Logger::log("Mail: no mails for ".$mailconf['user']);
 703                 }
 704
 705                 Logger::log("Mail: closing connection for ".$mailconf['user']);
 706                 imap_close($mbox);
 707         }
 708
 709
 710         /**
 711          * @param string $url
 712          * @param array  $importer
 713          * @param array  $contact
 714          * @param string $hubmode
 715          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 716          */
 717         private static function subscribeToHub(string $url, array $importer, array $contact, $hubmode = 'subscribe')
 718         {
 719                 /*
 720                  * Diaspora has different message-ids in feeds than they do
 721                  * through the direct Diaspora protocol. If we try and use
 722                  * the feed, we'll get duplicates. So don't.
 723                  */
 724                 if ($contact['network'] === Protocol::DIASPORA) {
 725                         return;
 726                 }
 727
 728                 // Without an importer we don't have a user id - so we quit
 729                 if (empty($importer)) {
 730                         return;
 731                 }
 732
 733                 $user = DBA::selectFirst('user', ['nickname'], ['uid' => $importer['uid']]);
 734
 735                 // No user, no nickname, we quit
 736                 if (!DBA::isResult($user)) {
 737                         return;
 738                 }
 739
 740                 $push_url = DI::baseUrl() . '/pubsub/' . $user['nickname'] . '/' . $contact['id'];
 741
 742                 // Use a single verify token, even if multiple hubs
 743                 $verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : Strings::getRandomHex());
 744
 745                 $params = 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
 746
 747                 Logger::log('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: ' . $push_url . ' with verifier ' . $verify_token);
 748
 749                 if (!strlen($contact['hub-verify']) || ($contact['hub-verify'] != $verify_token)) {
 750                         DBA::update('contact', ['hub-verify' => $verify_token], ['id' => $contact['id']]);
 751                 }
 752
 753                 $postResult = Network::post($url, $params);
 754
 755                 Logger::log('subscribe_to_hub: returns: ' . $postResult->getReturnCode(), Logger::DEBUG);
 756
 757                 return;
 758
 759         }
 760 }