src/Worker/OnePoll.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2021, the Friendica project
   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\Post;
  31 use Friendica\Model\User;
  32 use Friendica\Protocol\Activity;
  33 use Friendica\Protocol\ActivityPub;
  34 use Friendica\Protocol\Email;
  35 use Friendica\Protocol\Feed;
  36 use Friendica\Util\DateTimeFormat;
  37 use Friendica\Util\Strings;
  38
  39 class OnePoll
  40 {
  41         public static function execute($contact_id = 0, $command = '')
  42         {
  43                 Logger::notice('Start polling/probing contact', ['id' => $contact_id]);
  44
  45                 $force = ($command == "force");
  46
  47                 if (empty($contact_id)) {
  48                         Logger::notice('no contact provided');
  49                         return;
  50                 }
  51
  52                 $contact = DBA::selectFirst('contact', [], ['id' => $contact_id]);
  53                 if (!DBA::isResult($contact)) {
  54                         Logger::warning('Contact not found', ['id' => $contact_id]);
  55                         return;
  56                 }
  57
  58                 // We never probe mail contacts since their probing demands a mail from the contact in the inbox.
  59                 // We don't probe feed accounts by default since they are polled in a higher frequency, but forced probes are okay.
  60                 if ($force && ($contact['network'] == Protocol::FEED)) {
  61                         $success = Contact::updateFromProbe($contact_id);
  62                 } else {
  63                         $success = true;
  64                 }
  65
  66                 $importer_uid = $contact['uid'];
  67
  68                 $updated = DateTimeFormat::utcNow();
  69
  70                 // Possibly switch the remote contact to AP
  71                 if ($success && ($contact['network'] === Protocol::OSTATUS)) {
  72                         ActivityPub\Receiver::switchContact($contact['id'], $importer_uid, $contact['url']);
  73                 }
  74
  75                 $contact = DBA::selectFirst('contact', [], ['id' => $contact_id]);
  76
  77                 if ($success && ($importer_uid != 0) && in_array($contact['rel'], [Contact::SHARING, Contact::FRIEND])
  78                         && in_array($contact['network'], [Protocol::FEED, Protocol::MAIL, Protocol::OSTATUS])) {
  79                         $importer = User::getOwnerDataById($importer_uid);
  80                         if (empty($importer)) {
  81                                 Logger::warning('No self contact for user', ['uid' => $importer_uid]);
  82
  83                                 // set the last-update so we don't keep polling
  84                                 DBA::update('contact', ['last-update' => $updated], ['id' => $contact['id']]);
  85                                 return;
  86                         }
  87
  88                         Logger::info('Start polling/subscribing', ['protocol' => $contact['network'], 'id' => $contact['id']]);
  89                         if ($contact['network'] === Protocol::FEED) {
  90                                 $success = self::pollFeed($contact, $importer);
  91                         } elseif ($contact['network'] === Protocol::MAIL) {
  92                                 $success = self::pollMail($contact, $importer_uid, $updated);
  93                         } else {
  94                                 $success = self::subscribeToHub($contact['url'], $importer, $contact, $contact['blocked'] ? 'unsubscribe' : 'subscribe');
  95                         }
  96                         if (!$success) {
  97                                 Logger::notice('Probing had been successful, polling/subscribing failed', ['protocol' => $contact['network'], 'id' => $contact['id'], 'url' => $contact['url']]);
  98                         }
  99                 }
 100
 101                 if ($success) {
 102                         self::updateContact($contact, ['failed' => false, 'last-update' => $updated, 'success_update' => $updated]);
 103                         Contact::unmarkForArchival($contact);
 104                 } else {
 105                         self::updateContact($contact, ['failed' => true, 'last-update' => $updated, 'failure_update' => $updated]);
 106                         Contact::markForArchival($contact);
 107                 }
 108
 109                 Logger::notice('End');
 110                 return;
 111         }
 112
 113         /**
 114          * Updates a personal contact entry and the public contact entry
 115          *
 116          * @param array $contact The personal contact entry
 117          * @param array $fields  The fields that are updated
 118          * @throws \Exception
 119          */
 120         private static function updateContact(array $contact, array $fields)
 121         {
 122                 if (in_array($contact['network'], [Protocol::FEED, Protocol::MAIL, Protocol::OSTATUS])) {
 123                         // Update the user's contact
 124                         DBA::update('contact', $fields, ['id' => $contact['id']]);
 125
 126                         // Update the public contact
 127                         DBA::update('contact', $fields, ['uid' => 0, 'nurl' => $contact['nurl']]);
 128
 129                         // Update the rest of the contacts that aren't polled
 130                         DBA::update('contact', $fields, ['rel' => Contact::FOLLOWER, 'nurl' => $contact['nurl']]);
 131                 } else {
 132                         // Update all contacts
 133                         DBA::update('contact', $fields, ['nurl' => $contact['nurl']]);
 134                 }
 135         }
 136
 137         /**
 138          * Poll Feed contacts
 139          *
 140          * @param  array $contact The personal contact entry
 141          * @param  array $importer
 142          *
 143          * @return bool   Success
 144          * @throws \Exception
 145          */
 146         private static function pollFeed(array $contact, $importer)
 147         {
 148                 // Are we allowed to import from this person?
 149                 if ($contact['rel'] == Contact::FOLLOWER || $contact['blocked']) {
 150                         Logger::notice('Contact is blocked or only a follower');
 151                         return false;
 152                 }
 153
 154                 $cookiejar = tempnam(get_temppath(), 'cookiejar-onepoll-');
 155                 $curlResult = DI::httpRequest()->get($contact['poll'], ['cookiejar' => $cookiejar]);
 156                 unlink($cookiejar);
 157
 158                 if ($curlResult->isTimeout()) {
 159                         Logger::notice('Polling timed out', ['id' => $contact['id'], 'url' => $contact['poll']]);
 160                         return false;
 161                 }
 162
 163                 $xml = $curlResult->getBody();
 164                 if (empty($xml)) {
 165                         Logger::notice('Empty content', ['id' => $contact['id'], 'url' => $contact['poll']]);
 166                         return false;
 167                 }
 168
 169                 if (!strstr($xml, '<')) {
 170                         Logger::notice('response did not contain XML.', ['id' => $contact['id'], 'url' => $contact['poll']]);
 171                         return false;
 172                 }
 173
 174                 Logger::notice('Consume feed of contact', ['id' => $contact['id'], 'url' => $contact['poll']]);
 175
 176                 return !empty(Feed::import($xml, $importer, $contact));
 177         }
 178
 179         /**
 180          * Poll Mail contacts
 181          *
 182          * @param  array   $contact      The personal contact entry
 183          * @param  integer $importer_uid The UID of the importer
 184          * @param  string  $updated      The updated date
 185          * @throws \Exception
 186          */
 187         private static function pollMail(array $contact, $importer_uid, $updated)
 188         {
 189                 Logger::info('Fetching mails', ['addr' => $contact['addr']]);
 190
 191                 $mail_disabled = ((function_exists('imap_open') && !DI::config()->get('system', 'imap_disabled')) ? 0 : 1);
 192                 if ($mail_disabled) {
 193                         Logger::notice('Mail is disabled');
 194                         return false;
 195                 }
 196
 197                 Logger::info('Mail is enabled');
 198
 199                 $mbox = null;
 200                 $user = DBA::selectFirst('user', ['prvkey'], ['uid' => $importer_uid]);
 201
 202                 $condition = ["`server` != '' AND `uid` = ?", $importer_uid];
 203                 $mailconf = DBA::selectFirst('mailacct', [], $condition);
 204                 if (DBA::isResult($user) && DBA::isResult($mailconf)) {
 205                         $mailbox = Email::constructMailboxName($mailconf);
 206                         $password = '';
 207                         openssl_private_decrypt(hex2bin($mailconf['pass']), $password, $user['prvkey']);
 208                         $mbox = Email::connect($mailbox, $mailconf['user'], $password);
 209                         unset($password);
 210                         Logger::notice('Connect', ['user' => $mailconf['user']]);
 211                         if ($mbox) {
 212                                 $fields = ['last_check' => $updated];
 213                                 DBA::update('mailacct', $fields, ['id' => $mailconf['id']]);
 214                                 Logger::notice('Connected', ['user' => $mailconf['user']]);
 215                         } else {
 216                                 Logger::notice('Connection error', ['user' => $mailconf['user'], 'error' => imap_errors()]);
 217                                 return false;
 218                         }
 219                 }
 220
 221                 if (empty($mbox)) {
 222                         return false;
 223                 }
 224
 225                 $msgs = Email::poll($mbox, $contact['addr']);
 226
 227                 if (count($msgs)) {
 228                         Logger::info('Parsing mails', ['count' => count($msgs), 'addr' => $contact['addr'], 'user' => $mailconf['user']]);
 229
 230                         $metas = Email::messageMeta($mbox, implode(',', $msgs));
 231
 232                         if (count($metas) != count($msgs)) {
 233                                 Logger::log("for " . $mailconf['user'] . " there are ". count($msgs) . " messages but received " . count($metas) . " metas", Logger::DEBUG);
 234                         } else {
 235                                 $msgs = array_combine($msgs, $metas);
 236
 237                                 foreach ($msgs as $msg_uid => $meta) {
 238                                         Logger::info('Parsing mail', ['message-uid' => $msg_uid]);
 239
 240                                         $datarray = [];
 241                                         $datarray['uid'] = $importer_uid;
 242                                         $datarray['contact-id'] = $contact['id'];
 243                                         $datarray['verb'] = Activity::POST;
 244                                         $datarray['object-type'] = Activity\ObjectType::NOTE;
 245                                         $datarray['network'] = Protocol::MAIL;
 246                                         // $meta = Email::messageMeta($mbox, $msg_uid);
 247
 248                                         $datarray['thr-parent'] = $datarray['uri'] = Email::msgid2iri(trim($meta->message_id, '<>'));
 249
 250                                         // Have we seen it before?
 251                                         $fields = ['deleted', 'id'];
 252                                         $condition = ['uid' => $importer_uid, 'uri' => $datarray['uri']];
 253                                         $item = Post::selectFirst($fields, $condition);
 254                                         if (DBA::isResult($item)) {
 255                                                 Logger::log("Mail: Seen before ".$msg_uid." for ".$mailconf['user']." UID: ".$importer_uid." URI: ".$datarray['uri'],Logger::DEBUG);
 256
 257                                                 // Only delete when mails aren't automatically moved or deleted
 258                                                 if (($mailconf['action'] != 1) && ($mailconf['action'] != 3))
 259                                                         if ($meta->deleted && ! $item['deleted']) {
 260                                                                 $fields = ['deleted' => true, 'changed' => $updated];
 261                                                                 Item::update($fields, ['id' => $item['id']]);
 262                                                         }
 263
 264                                                 switch ($mailconf['action']) {
 265                                                         case 0:
 266                                                                 Logger::log("Mail: Seen before ".$msg_uid." for ".$mailconf['user'].". Doing nothing.", Logger::DEBUG);
 267                                                                 break;
 268                                                         case 1:
 269                                                                 Logger::log("Mail: Deleting ".$msg_uid." for ".$mailconf['user']);
 270                                                                 imap_delete($mbox, $msg_uid, FT_UID);
 271                                                                 break;
 272                                                         case 2:
 273                                                                 Logger::log("Mail: Mark as seen ".$msg_uid." for ".$mailconf['user']);
 274                                                                 imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 275                                                                 break;
 276                                                         case 3:
 277                                                                 Logger::log("Mail: Moving ".$msg_uid." to ".$mailconf['movetofolder']." for ".$mailconf['user']);
 278                                                                 imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 279                                                                 if ($mailconf['movetofolder'] != "") {
 280                                                                         imap_mail_move($mbox, $msg_uid, $mailconf['movetofolder'], FT_UID);
 281                                                                 }
 282                                                                 break;
 283                                                 }
 284                                                 continue;
 285                                         }
 286
 287                                         // look for a 'references' or an 'in-reply-to' header and try to match with a parent item we have locally.
 288                                         $raw_refs = (property_exists($meta, 'references') ? str_replace("\t", '', $meta->references) : '');
 289                                         if (!trim($raw_refs)) {
 290                                                 $raw_refs = (property_exists($meta, 'in_reply_to') ? str_replace("\t", '', $meta->in_reply_to) : '');
 291                                         }
 292                                         $raw_refs = trim($raw_refs);  // Don't allow a blank reference in $refs_arr
 293
 294                                         if ($raw_refs) {
 295                                                 $refs_arr = explode(' ', $raw_refs);
 296                                                 if (count($refs_arr)) {
 297                                                         for ($x = 0; $x < count($refs_arr); $x ++) {
 298                                                                 $refs_arr[$x] = Email::msgid2iri(str_replace(['<', '>', ' '],['', '', ''], $refs_arr[$x]));
 299                                                         }
 300                                                 }
 301                                                 $condition = ['uri' => $refs_arr, 'uid' => $importer_uid];
 302                                                 $parent = Post::selectFirst(['uri'], $condition);
 303                                                 if (DBA::isResult($parent)) {
 304                                                         $datarray['thr-parent'] = $parent['uri'];
 305                                                 }
 306                                         }
 307
 308                                         // Decoding the header
 309                                         $subject = imap_mime_header_decode($meta->subject ?? '');
 310                                         $datarray['title'] = "";
 311                                         foreach ($subject as $subpart) {
 312                                                 if ($subpart->charset != "default") {
 313                                                         $datarray['title'] .= iconv($subpart->charset, 'UTF-8//IGNORE', $subpart->text);
 314                                                 } else {
 315                                                         $datarray['title'] .= $subpart->text;
 316                                                 }
 317                                         }
 318                                         $datarray['title'] = Strings::escapeTags(trim($datarray['title']));
 319
 320                                         //$datarray['title'] = Strings::escapeTags(trim($meta->subject));
 321                                         $datarray['created'] = DateTimeFormat::utc($meta->date);
 322
 323                                         // Is it a reply?
 324                                         $reply = ((substr(strtolower($datarray['title']), 0, 3) == "re:") ||
 325                                                 (substr(strtolower($datarray['title']), 0, 3) == "re-") ||
 326                                                 ($raw_refs != ""));
 327
 328                                         // Remove Reply-signs in the subject
 329                                         $datarray['title'] = self::RemoveReply($datarray['title']);
 330
 331                                         // If it seems to be a reply but a header couldn't be found take the last message with matching subject
 332                                         if (empty($datarray['thr-parent']) && $reply) {
 333                                                 $condition = ['title' => $datarray['title'], 'uid' => $importer_uid, 'network' => Protocol::MAIL];
 334                                                 $params = ['order' => ['created' => true]];
 335                                                 $parent = Post::selectFirst(['uri'], $condition, $params);
 336                                                 if (DBA::isResult($parent)) {
 337                                                         $datarray['thr-parent'] = $parent['uri'];
 338                                                 }
 339                                         }
 340
 341                                         $headers = imap_headerinfo($mbox, $meta->msgno);
 342
 343                                         $object = [];
 344
 345                                         if (!empty($headers->from)) {
 346                                                 $object['from'] = $headers->from;
 347                                         }
 348
 349                                         if (!empty($headers->to)) {
 350                                                 $object['to'] = $headers->to;
 351                                         }
 352
 353                                         if (!empty($headers->reply_to)) {
 354                                                 $object['reply_to'] = $headers->reply_to;
 355                                         }
 356
 357                                         if (!empty($headers->sender)) {
 358                                                 $object['sender'] = $headers->sender;
 359                                         }
 360
 361                                         if (!empty($object)) {
 362                                                 $datarray['object'] = json_encode($object);
 363                                         }
 364
 365                                         $fromname = $frommail = $headers->from[0]->mailbox . '@' . $headers->from[0]->host;
 366                                         if (!empty($headers->from[0]->personal)) {
 367                                                 $fromname = $headers->from[0]->personal;
 368                                         }
 369
 370                                         $datarray['author-name'] = $fromname;
 371                                         $datarray['author-link'] = "mailto:".$frommail;
 372                                         $datarray['author-avatar'] = $contact['photo'];
 373
 374                                         $datarray['owner-name'] = $contact['name'];
 375                                         $datarray['owner-link'] = "mailto:".$contact['addr'];
 376                                         $datarray['owner-avatar'] = $contact['photo'];
 377
 378                                         if (empty($datarray['thr-parent']) || ($datarray['thr-parent'] === $datarray['uri'])) {
 379                                                 $datarray['private'] = Item::PRIVATE;
 380                                         }
 381
 382                                         if (!DI::pConfig()->get($importer_uid, 'system', 'allow_public_email_replies')) {
 383                                                 $datarray['private'] = Item::PRIVATE;
 384                                                 $datarray['allow_cid'] = '<' . $contact['id'] . '>';
 385                                         }
 386
 387                                         $datarray = Email::getMessage($mbox, $msg_uid, $reply, $datarray);
 388                                         if (empty($datarray['body'])) {
 389                                                 Logger::log("Mail: can't fetch msg ".$msg_uid." for ".$mailconf['user']);
 390                                                 continue;
 391                                         }
 392
 393                                         Logger::log("Mail: Importing ".$msg_uid." for ".$mailconf['user']);
 394
 395                                         Item::insert($datarray);
 396
 397                                         switch ($mailconf['action']) {
 398                                                 case 0:
 399                                                         Logger::log("Mail: Seen before ".$msg_uid." for ".$mailconf['user'].". Doing nothing.", Logger::DEBUG);
 400                                                         break;
 401                                                 case 1:
 402                                                         Logger::log("Mail: Deleting ".$msg_uid." for ".$mailconf['user']);
 403                                                         imap_delete($mbox, $msg_uid, FT_UID);
 404                                                         break;
 405                                                 case 2:
 406                                                         Logger::log("Mail: Mark as seen ".$msg_uid." for ".$mailconf['user']);
 407                                                         imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 408                                                         break;
 409                                                 case 3:
 410                                                         Logger::log("Mail: Moving ".$msg_uid." to ".$mailconf['movetofolder']." for ".$mailconf['user']);
 411                                                         imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 412                                                         if ($mailconf['movetofolder'] != "") {
 413                                                                 imap_mail_move($mbox, $msg_uid, $mailconf['movetofolder'], FT_UID);
 414                                                         }
 415                                                         break;
 416                                         }
 417                                 }
 418                         }
 419                 } else {
 420                         Logger::notice('No mails', ['user' => $mailconf['user']]);
 421                 }
 422
 423
 424                 Logger::info('Closing connection', ['user' => $mailconf['user']]);
 425                 imap_close($mbox);
 426
 427                 return true;
 428         }
 429
 430         private static function RemoveReply($subject)
 431         {
 432                 while (in_array(strtolower(substr($subject, 0, 3)), ["re:", "aw:"])) {
 433                         $subject = trim(substr($subject, 4));
 434                 }
 435
 436                 return $subject;
 437         }
 438
 439         /**
 440          * @param string $url
 441          * @param array  $importer
 442          * @param array  $contact
 443          * @param string $hubmode
 444          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 445          */
 446         private static function subscribeToHub(string $url, array $importer, array $contact, string $hubmode = 'subscribe')
 447         {
 448                 $push_url = DI::baseUrl() . '/pubsub/' . $importer['nick'] . '/' . $contact['id'];
 449
 450                 // Use a single verify token, even if multiple hubs
 451                 $verify_token = $contact['hub-verify'] ?: Strings::getRandomHex();
 452
 453                 $params = 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
 454
 455                 Logger::info('Hub subscription start', ['mode' => $hubmode, 'name' => $contact['name'], 'hub' => $url, 'endpoint' => $push_url, 'verifier' => $verify_token]);
 456
 457                 if (!strlen($contact['hub-verify']) || ($contact['hub-verify'] != $verify_token)) {
 458                         DBA::update('contact', ['hub-verify' => $verify_token], ['id' => $contact['id']]);
 459                 }
 460
 461                 $postResult = DI::httpRequest()->post($url, $params);
 462
 463                 Logger::info('Hub subscription done', ['result' => $postResult->getReturnCode()]);
 464
 465                 return $postResult->isSuccess();
 466         }
 467 }