src/Worker/OnePoll.php

   1 <?php
   2 /**
   3  * @file src/Worker/OnePoll.php
   4  */
   5 namespace Friendica\Worker;
   6
   7 use Friendica\Core\Config;
   8 use Friendica\Core\PConfig;
   9 use Friendica\Database\DBM;
  10 use Friendica\Object\Contact;
  11 use Friendica\Protocol\Email;
  12 use Friendica\Protocol\PortableContact;
  13 use dba;
  14
  15 require_once 'include/follow.php';
  16
  17 Class OnePoll
  18 {
  19         public static function execute($contact_id = 0, $command = '') {
  20                 global $a;
  21
  22                 require_once 'include/datetime.php';
  23                 require_once 'include/items.php';
  24                 require_once 'include/queue_fn.php';
  25
  26                 logger('onepoll: start');
  27
  28                 $manual_id  = 0;
  29                 $generation = 0;
  30                 $hub_update = false;
  31                 $force      = false;
  32                 $restart    = false;
  33
  34                 if ($command == "force") {
  35                         $force = true;
  36                 }
  37
  38                 if (!$contact_id) {
  39                         logger('onepoll: no contact');
  40                         return;
  41                 }
  42
  43                 $d = datetime_convert();
  44
  45                 // Only poll from those with suitable relationships,
  46                 // and which have a polling address and ignore Diaspora since
  47                 // we are unable to match those posts with a Diaspora GUID and prevent duplicates.
  48
  49                 $contacts = q("SELECT `contact`.* FROM `contact`
  50                         WHERE (`rel` = %d OR `rel` = %d) AND `poll` != ''
  51                         AND NOT `network` IN ('%s', '%s')
  52                         AND `contact`.`id` = %d
  53                         AND `self` = 0 AND `contact`.`blocked` = 0 AND `contact`.`readonly` = 0
  54                         AND `contact`.`archive` = 0 LIMIT 1",
  55                         intval(CONTACT_IS_SHARING),
  56                         intval(CONTACT_IS_FRIEND),
  57                         dbesc(NETWORK_FACEBOOK),
  58                         dbesc(NETWORK_PUMPIO),
  59                         intval($contact_id)
  60                 );
  61
  62                 if (!count($contacts)) {
  63                         logger('Contact not found or cannot be used.');
  64                         return;
  65                 }
  66
  67                 $contact = $contacts[0];
  68
  69                 $importer_uid = $contact['uid'];
  70
  71                 // load current friends if possible.
  72                 if (($contact['poco'] != "") && ($contact['success_update'] > $contact['failure_update'])) {
  73                         $r = q("SELECT count(*) AS total FROM glink
  74                                 WHERE `cid` = %d AND updated > UTC_TIMESTAMP() - INTERVAL 1 DAY",
  75                                 intval($contact['id'])
  76                         );
  77                         if (DBM::is_result($r)) {
  78                                 if (!$r[0]['total']) {
  79                                         PortableContact::loadWorker($contact['id'], $importer_uid, 0, $contact['poco']);
  80                                 }
  81                         }
  82                 }
  83
  84                 /// @TODO Check why we don't poll the Diaspora feed at the moment (some guid problem in the items?)
  85                 /// @TODO Check whether this is possible with Redmatrix
  86                 if ($contact["network"] == NETWORK_DIASPORA) {
  87                         if (PortableContact::updateNeeded($contact["created"], $contact["last-item"], $contact["failure_update"], $contact["success_update"])) {
  88                                 $last_updated = PortableContact::lastUpdated($contact["url"]);
  89                                 $updated = datetime_convert();
  90                                 if ($last_updated) {
  91                                         $fields = array('last-item' => $last_updated, 'last-update' => $updated, 'success_update' => $updated);
  92                                         dba::update('contact', $fields, array('id' => $contact['id']));
  93                                 } else {
  94                                         dba::update('contact', array('last-update' => $updated, 'failure_update' => $updated), array('id' => $contact['id']));
  95                                 }
  96                         }
  97                         return;
  98                 }
  99
 100                 $xml = false;
 101
 102                 $t = $contact['last-update'];
 103
 104                 if ($contact['subhub']) {
 105                         $poll_interval = Config::get('system', 'pushpoll_frequency');
 106                         $contact['priority'] = (($poll_interval !== false) ? intval($poll_interval) : 3);
 107                         $hub_update = false;
 108
 109                         if (datetime_convert('UTC', 'UTC', 'now') > datetime_convert('UTC', 'UTC', $t . " + 1 day")) {
 110                                 $hub_update = true;
 111                         }
 112                 } else {
 113                         $hub_update = false;
 114                 }
 115
 116                 $last_update = (($contact['last-update'] <= NULL_DATE)
 117                         ? datetime_convert('UTC', 'UTC', 'now - 7 days', ATOM_TIME)
 118                         : datetime_convert('UTC', 'UTC', $contact['last-update'], ATOM_TIME)
 119                 );
 120
 121                 // Update the contact entry
 122                 if (($contact['network'] === NETWORK_OSTATUS) || ($contact['network'] === NETWORK_DIASPORA) || ($contact['network'] === NETWORK_DFRN)) {
 123                         if (!PortableContact::reachable($contact['url'])) {
 124                                 logger("Skipping probably dead contact ".$contact['url']);
 125                                 return;
 126                         }
 127
 128                         if (!update_contact($contact["id"])) {
 129                                 Contact::markForArchival($contact);
 130                                 logger('Contact is marked dead');
 131                                 return;
 132                         } else {
 133                                 Contact::unmarkForArchival($contact);
 134                         }
 135                 }
 136
 137                 if ($importer_uid == 0) {
 138                         logger('Ignore public contacts');
 139                         return;
 140                 }
 141
 142                 $r = q("SELECT `contact`.*, `user`.`page-flags` FROM `contact` INNER JOIN `user` on `contact`.`uid` = `user`.`uid` WHERE `user`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
 143                         intval($importer_uid)
 144                 );
 145
 146                 if (!DBM::is_result($r)) {
 147                         logger('No self contact for user '.$importer_uid);
 148                         return;
 149                 }
 150
 151                 $importer = $r[0];
 152
 153                 logger("onepoll: poll: ({$contact['id']}) IMPORTER: {$importer['name']}, CONTACT: {$contact['name']}");
 154
 155                 if ($contact['network'] === NETWORK_DFRN) {
 156                         $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
 157                         if (intval($contact['duplex']) && $contact['dfrn-id']) {
 158                                 $idtosend = '0:' . $orig_id;
 159                         }
 160                         if (intval($contact['duplex']) && $contact['issued-id']) {
 161                                 $idtosend = '1:' . $orig_id;
 162                         }
 163
 164                         // they have permission to write to us. We already filtered this in the contact query.
 165                         $perm = 'rw';
 166
 167                         // But this may be our first communication, so set the writable flag if it isn't set already.
 168
 169                         if (!intval($contact['writable'])) {
 170                                 $fields = array('writable' => true);
 171                                 dba::update('contact', $fields, array('id' => $contact['id']));
 172                         }
 173
 174                         $url = $contact['poll'] . '?dfrn_id=' . $idtosend
 175                                 . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
 176                                 . '&type=data&last_update=' . $last_update
 177                                 . '&perm=' . $perm ;
 178
 179                         $ret = z_fetch_url($url);
 180
 181                         if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 182                                 return;
 183                         }
 184
 185                         $handshake_xml = $ret['body'];
 186
 187                         $html_code = $a->get_curl_code();
 188
 189                         logger('onepoll: handshake with url ' . $url . ' returns xml: ' . $handshake_xml, LOGGER_DATA);
 190
 191
 192                         if (!strlen($handshake_xml) || ($html_code >= 400) || !$html_code) {
 193                                 logger("$url appears to be dead - marking for death ");
 194
 195                                 // dead connection - might be a transient event, or this might
 196                                 // mean the software was uninstalled or the domain expired.
 197                                 // Will keep trying for one month.
 198
 199                                 Contact::markForArchival($contact);
 200
 201                                 // set the last-update so we don't keep polling
 202                                 $fields = array('last-update' => datetime_convert(), 'failure_update' => datetime_convert());
 203                                 dba::update('contact', $fields, array('id' => $contact['id']));
 204
 205                                 return;
 206                         }
 207
 208                         if (!strstr($handshake_xml, '<')) {
 209                                 logger('response from ' . $url . ' did not contain XML.');
 210
 211                                 Contact::markForArchival($contact);
 212
 213                                 $fields = array('last-update' => datetime_convert(), 'failure_update' => datetime_convert());
 214                                 dba::update('contact', $fields, array('id' => $contact['id']));
 215
 216                                 return;
 217                         }
 218
 219
 220                         $res = parse_xml_string($handshake_xml);
 221
 222                         if (intval($res->status) == 1) {
 223                                 logger("$url replied status 1 - marking for death ");
 224
 225                                 // we may not be friends anymore. Will keep trying for one month.
 226                                 // set the last-update so we don't keep polling
 227                                 $fields = array('last-update' => datetime_convert(), 'failure_update' => datetime_convert());
 228                                 dba::update('contact', $fields, array('id' => $contact['id']));
 229
 230                                 Contact::markForArchival($contact);
 231                         } elseif ($contact['term-date'] > NULL_DATE) {
 232                                 logger("$url back from the dead - removing mark for death");
 233                                 Contact::unmarkForArchival($contact);
 234                         }
 235
 236                         if ((intval($res->status) != 0) || !strlen($res->challenge) || !strlen($res->dfrn_id)) {
 237                                 return;
 238                         }
 239
 240                         if (((float)$res->dfrn_version > 2.21) && ($contact['poco'] == '')) {
 241                                 $fields = array('poco' => str_replace('/profile/', '/poco/', $contact['url']));
 242                                 dba::update('contact', $fields, array('id' => $contact['id']));
 243                         }
 244
 245                         $postvars = array();
 246
 247                         $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
 248                         $challenge    = hex2bin((string) $res->challenge);
 249
 250                         $final_dfrn_id = '';
 251
 252                         if ($contact['duplex'] && strlen($contact['prvkey'])) {
 253                                 openssl_private_decrypt($sent_dfrn_id, $final_dfrn_id, $contact['prvkey']);
 254                                 openssl_private_decrypt($challenge, $postvars['challenge'], $contact['prvkey']);
 255                         } else {
 256                                 openssl_public_decrypt($sent_dfrn_id, $final_dfrn_id, $contact['pubkey']);
 257                                 openssl_public_decrypt($challenge, $postvars['challenge'], $contact['pubkey']);
 258                         }
 259
 260                         $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
 261
 262                         if (strpos($final_dfrn_id, ':') == 1) {
 263                                 $final_dfrn_id = substr($final_dfrn_id, 2);
 264                         }
 265
 266                         if ($final_dfrn_id != $orig_id) {
 267                                 logger('ID did not decode: ' . $contact['id'] . ' orig: ' . $orig_id . ' final: ' . $final_dfrn_id);
 268                                 // did not decode properly - cannot trust this site
 269                                 return;
 270                         }
 271
 272                         $postvars['dfrn_id'] = $idtosend;
 273                         $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
 274                         $postvars['perm'] = 'rw';
 275
 276                         $xml = post_url($contact['poll'], $postvars);
 277
 278                 } elseif (($contact['network'] === NETWORK_OSTATUS)
 279                         || ($contact['network'] === NETWORK_DIASPORA)
 280                         || ($contact['network'] === NETWORK_FEED)) {
 281
 282                         // Upgrading DB fields from an older Friendica version
 283                         // Will only do this once per notify-enabled OStatus contact
 284                         // or if relationship changes
 285
 286                         $stat_writeable = ((($contact['notify']) && ($contact['rel'] == CONTACT_IS_FOLLOWER || $contact['rel'] == CONTACT_IS_FRIEND)) ? 1 : 0);
 287
 288                         // Contacts from OStatus are always writable
 289                         if ($contact['network'] === NETWORK_OSTATUS) {
 290                                 $stat_writeable = 1;
 291                         }
 292
 293                         if ($stat_writeable != $contact['writable']) {
 294                                 $fields = array('writable' => $stat_writeable);
 295                                 dba::update('contact', $fields, array('id' => $contact['id']));
 296                         }
 297
 298                         // Are we allowed to import from this person?
 299
 300                         if ($contact['rel'] == CONTACT_IS_FOLLOWER || $contact['blocked'] || $contact['readonly']) {
 301                                 return;
 302                         }
 303
 304                         $cookiejar = tempnam(get_temppath(), 'cookiejar-onepoll-');
 305                         $ret = z_fetch_url($contact['poll'], false, $redirects, array('cookiejar' => $cookiejar));
 306
 307                         if ($ret['errno'] == CURLE_OPERATION_TIMEDOUT) {
 308                                 return;
 309                         }
 310
 311                         $xml = $ret['body'];
 312
 313                         unlink($cookiejar);
 314                 } elseif ($contact['network'] === NETWORK_MAIL) {
 315
 316                         logger("Mail: Fetching for ".$contact['addr'], LOGGER_DEBUG);
 317
 318                         $mail_disabled = ((function_exists('imap_open') && (! Config::get('system', 'imap_disabled'))) ? 0 : 1);
 319                         if ($mail_disabled) {
 320                                 return;
 321                         }
 322
 323                         logger("Mail: Enabled", LOGGER_DEBUG);
 324
 325                         $mbox = null;
 326                         $x = dba::select('user', array('prvkey'), array('uid' => $importer_uid), array('limit' => 1));
 327
 328                         $condition = array("`server` != '' AND `uid` = ?", $importer_uid);
 329                         $mailconf = dba::select('mailacct', array(), $condition, array('limit' => 1));
 330                         if (DBM::is_result($x) && DBM::is_result($mailconf)) {
 331                                 $mailbox = Email::constructMailboxName($mailconf);
 332                                 $password = '';
 333                                 openssl_private_decrypt(hex2bin($mailconf['pass']), $password, $x['prvkey']);
 334                                 $mbox = Email::connect($mailbox, $mailconf['user'], $password);
 335                                 unset($password);
 336                                 logger("Mail: Connect to " . $mailconf['user']);
 337                                 if ($mbox) {
 338                                         $fields = array('last_check' => datetime_convert());
 339                                         dba::update('mailacct', $fields, array('id' => $mailconf['id']));
 340                                         logger("Mail: Connected to " . $mailconf['user']);
 341                                 } else {
 342                                         logger("Mail: Connection error ".$mailconf['user']." ".print_r(imap_errors(), true));
 343                                 }
 344                         }
 345
 346                         if ($mbox) {
 347                                 $msgs = Email::poll($mbox, $contact['addr']);
 348
 349                                 if (count($msgs)) {
 350                                         logger("Mail: Parsing ".count($msgs)." mails from ".$contact['addr']." for ".$mailconf['user'], LOGGER_DEBUG);
 351
 352                                         $metas = Email::messageMeta($mbox, implode(',', $msgs));
 353                                         if (count($metas) != count($msgs)) {
 354                                                 logger("onepoll: for " . $mailconf['user'] . " there are ". count($msgs) . " messages but received " . count($metas) . " metas", LOGGER_DEBUG);
 355                                         } else {
 356                                                 $msgs = array_combine($msgs, $metas);
 357
 358                                                 foreach ($msgs as $msg_uid => $meta) {
 359                                                         logger("Mail: Parsing mail ".$msg_uid, LOGGER_DATA);
 360
 361                                                         $datarray = array();
 362                                                         $datarray['verb'] = ACTIVITY_POST;
 363                                                         $datarray['object-type'] = ACTIVITY_OBJ_NOTE;
 364                                                         // $meta = Email::messageMeta($mbox, $msg_uid);
 365
 366                                                         $datarray['uri'] = Email::msgid2iri(trim($meta->message_id, '<>'));
 367
 368                                                         // Have we seen it before?
 369                                                         $fields = array('deleted', 'id');
 370                                                         $condition = array('uid' => $importer_uid, 'uri' => $datarray['uri']);
 371                                                         $r = dba::select('item', $fields, $condition, array('limit' => 1));
 372
 373                                                         if (DBM::is_result($r)) {
 374                                                                 logger("Mail: Seen before ".$msg_uid." for ".$mailconf['user']." UID: ".$importer_uid." URI: ".$datarray['uri'],LOGGER_DEBUG);
 375
 376                                                                 // Only delete when mails aren't automatically moved or deleted
 377                                                                 if (($mailconf['action'] != 1) && ($mailconf['action'] != 3))
 378                                                                         if ($meta->deleted && ! $r['deleted']) {
 379                                                                                 $fields = array('deleted' => true, 'changed' => datetime_convert());
 380                                                                                 dba::update('item', $fields, array('id' => $r['id']));
 381                                                                         }
 382
 383                                                                 switch ($mailconf['action']) {
 384                                                                         case 0:
 385                                                                                 logger("Mail: Seen before ".$msg_uid." for ".$mailconf['user'].". Doing nothing.", LOGGER_DEBUG);
 386                                                                                 break;
 387                                                                         case 1:
 388                                                                                 logger("Mail: Deleting ".$msg_uid." for ".$mailconf['user']);
 389                                                                                 imap_delete($mbox, $msg_uid, FT_UID);
 390                                                                                 break;
 391                                                                         case 2:
 392                                                                                 logger("Mail: Mark as seen ".$msg_uid." for ".$mailconf['user']);
 393                                                                                 imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 394                                                                                 break;
 395                                                                         case 3:
 396                                                                                 logger("Mail: Moving ".$msg_uid." to ".$mailconf['movetofolder']." for ".$mailconf['user']);
 397                                                                                 imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 398                                                                                 if ($mailconf['movetofolder'] != "") {
 399                                                                                         imap_mail_move($mbox, $msg_uid, $mailconf['movetofolder'], FT_UID);
 400                                                                                 }
 401                                                                                 break;
 402                                                                 }
 403                                                                 continue;
 404                                                         }
 405
 406
 407                                                         // look for a 'references' or an 'in-reply-to' header and try to match with a parent item we have locally.
 408                                                         $raw_refs = ((property_exists($meta, 'references')) ? str_replace("\t", '', $meta->references) : '');
 409                                                         if (!trim($raw_refs)) {
 410                                                                 $raw_refs = ((property_exists($meta, 'in_reply_to')) ? str_replace("\t", '', $meta->in_reply_to) : '');
 411                                                         }
 412                                                         $raw_refs = trim($raw_refs);  // Don't allow a blank reference in $refs_arr
 413
 414                                                         if ($raw_refs) {
 415                                                                 $refs_arr = explode(' ', $raw_refs);
 416                                                                 if (count($refs_arr)) {
 417                                                                         for ($x = 0; $x < count($refs_arr); $x ++) {
 418                                                                                 $refs_arr[$x] = "'" . Email::msgid2iri(str_replace(array('<', '>', ' '),array('', '', ''),dbesc($refs_arr[$x]))) . "'";
 419                                                                         }
 420                                                                 }
 421                                                                 $qstr = implode(',', $refs_arr);
 422                                                                 $r = q("SELECT `parent-uri` FROM `item` USE INDEX (`uid_uri`) WHERE `uri` IN ($qstr) AND `uid` = %d LIMIT 1",
 423                                                                         intval($importer_uid)
 424                                                                 );
 425                                                                 if (DBM::is_result($r)) {
 426                                                                         $datarray['parent-uri'] = $r[0]['parent-uri'];  // Set the parent as the top-level item
 427                                                                 }
 428                                                         }
 429
 430                                                         // Decoding the header
 431                                                         $subject = imap_mime_header_decode($meta->subject);
 432                                                         $datarray['title'] = "";
 433                                                         foreach ($subject as $subpart) {
 434                                                                 if ($subpart->charset != "default") {
 435                                                                         $datarray['title'] .= iconv($subpart->charset, 'UTF-8//IGNORE', $subpart->text);
 436                                                                 } else {
 437                                                                         $datarray['title'] .= $subpart->text;
 438                                                                 }
 439                                                         }
 440                                                         $datarray['title'] = notags(trim($datarray['title']));
 441
 442                                                         //$datarray['title'] = notags(trim($meta->subject));
 443                                                         $datarray['created'] = datetime_convert('UTC', 'UTC', $meta->date);
 444
 445                                                         // Is it a reply?
 446                                                         $reply = ((substr(strtolower($datarray['title']), 0, 3) == "re:") ||
 447                                                                 (substr(strtolower($datarray['title']), 0, 3) == "re-") ||
 448                                                                 ($raw_refs != ""));
 449
 450                                                         // Remove Reply-signs in the subject
 451                                                         $datarray['title'] = self::RemoveReply($datarray['title']);
 452
 453                                                         // If it seems to be a reply but a header couldn't be found take the last message with matching subject
 454                                                         if (empty($datarray['parent-uri']) && $reply) {
 455                                                                 $r = q("SELECT `parent-uri` FROM `item` WHERE `title` = \"%s\" AND `uid` = %d AND `network` = '%s' ORDER BY `created` DESC LIMIT 1",
 456                                                                         dbesc(protect_sprintf($datarray['title'])),
 457                                                                         intval($importer_uid),
 458                                                                         dbesc(NETWORK_MAIL));
 459                                                                 if (DBM::is_result($r)) {
 460                                                                         $datarray['parent-uri'] = $r[0]['parent-uri'];
 461                                                                 }
 462                                                         }
 463
 464                                                         if (empty($datarray['parent-uri'])) {
 465                                                                 $datarray['parent-uri'] = $datarray['uri'];
 466                                                         }
 467
 468                                                         $r = Email::getMessage($mbox, $msg_uid, $reply);
 469                                                         if (!$r) {
 470                                                                 logger("Mail: can't fetch msg ".$msg_uid." for ".$mailconf['user']);
 471                                                                 continue;
 472                                                         }
 473                                                         $datarray['body'] = escape_tags($r['body']);
 474                                                         $datarray['body'] = limit_body_size($datarray['body']);
 475
 476                                                         logger("Mail: Importing ".$msg_uid." for ".$mailconf['user']);
 477
 478                                                         /// @TODO Adding a gravatar for the original author would be cool
 479
 480                                                         $from = imap_mime_header_decode($meta->from);
 481                                                         $fromdecoded = "";
 482                                                         foreach ($from as $frompart) {
 483                                                                 if ($frompart->charset != "default") {
 484                                                                         $fromdecoded .= iconv($frompart->charset, 'UTF-8//IGNORE', $frompart->text);
 485                                                                 } else {
 486                                                                         $fromdecoded .= $frompart->text;
 487                                                                 }
 488                                                         }
 489
 490                                                         $fromarr = imap_rfc822_parse_adrlist($fromdecoded, $a->get_hostname());
 491
 492                                                         $frommail = $fromarr[0]->mailbox."@".$fromarr[0]->host;
 493
 494                                                         if (isset($fromarr[0]->personal)) {
 495                                                                 $fromname = $fromarr[0]->personal;
 496                                                         } else {
 497                                                                 $fromname = $frommail;
 498                                                         }
 499
 500                                                         $datarray['author-name'] = $fromname;
 501                                                         $datarray['author-link'] = "mailto:".$frommail;
 502                                                         $datarray['author-avatar'] = $contact['photo'];
 503
 504                                                         $datarray['owner-name'] = $contact['name'];
 505                                                         $datarray['owner-link'] = "mailto:".$contact['addr'];
 506                                                         $datarray['owner-avatar'] = $contact['photo'];
 507
 508                                                         $datarray['uid'] = $importer_uid;
 509                                                         $datarray['contact-id'] = $contact['id'];
 510                                                         if ($datarray['parent-uri'] === $datarray['uri']) {
 511                                                                 $datarray['private'] = 1;
 512                                                         }
 513                                                         if (($contact['network'] === NETWORK_MAIL) && (!PConfig::get($importer_uid, 'system', 'allow_public_email_replies'))) {
 514                                                                 $datarray['private'] = 1;
 515                                                                 $datarray['allow_cid'] = '<' . $contact['id'] . '>';
 516                                                         }
 517
 518                                                         $stored_item = item_store($datarray);
 519
 520                                                         $condition = array('parent-uri' => $datarray['parent-uri'], 'uid' => $importer_uid);
 521                                                         dba::update('item', array('last-child' => false), $condition);
 522
 523                                                         dba::update('item', array('last-child' => true), array('id' => $stored_item));
 524
 525                                                         switch ($mailconf['action']) {
 526                                                                 case 0:
 527                                                                         logger("Mail: Seen before ".$msg_uid." for ".$mailconf['user'].". Doing nothing.", LOGGER_DEBUG);
 528                                                                         break;
 529                                                                 case 1:
 530                                                                         logger("Mail: Deleting ".$msg_uid." for ".$mailconf['user']);
 531                                                                         imap_delete($mbox, $msg_uid, FT_UID);
 532                                                                         break;
 533                                                                 case 2:
 534                                                                         logger("Mail: Mark as seen ".$msg_uid." for ".$mailconf['user']);
 535                                                                         imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 536                                                                         break;
 537                                                                 case 3:
 538                                                                         logger("Mail: Moving ".$msg_uid." to ".$mailconf['movetofolder']." for ".$mailconf['user']);
 539                                                                         imap_setflag_full($mbox, $msg_uid, "\\Seen", ST_UID);
 540                                                                         if ($mailconf['movetofolder'] != "") {
 541                                                                                 imap_mail_move($mbox, $msg_uid, $mailconf['movetofolder'], FT_UID);
 542                                                                         }
 543                                                                         break;
 544                                                         }
 545                                                 }
 546                                         }
 547                                 } else {
 548                                         logger("Mail: no mails for ".$mailconf['user']);
 549                                 }
 550
 551                                 logger("Mail: closing connection for ".$mailconf['user']);
 552                                 imap_close($mbox);
 553                         }
 554                 }
 555
 556                 if ($xml) {
 557                         logger('received xml : ' . $xml, LOGGER_DATA);
 558                         if (!strstr($xml, '<')) {
 559                                 logger('post_handshake: response from ' . $url . ' did not contain XML.');
 560
 561                                 $fields = array('last-update' => datetime_convert(), 'failure_update' => datetime_convert());
 562                                 dba::update('contact', $fields, array('id' => $contact['id']));
 563
 564                                 return;
 565                         }
 566
 567
 568                         logger("Consume feed of contact ".$contact['id']);
 569
 570                         consume_feed($xml, $importer, $contact, $hub, 1, 1);
 571
 572                         // do it twice. Ensures that children of parents which may be later in the stream aren't tossed
 573
 574                         consume_feed($xml, $importer, $contact, $hub, 1, 2);
 575
 576                         $hubmode = 'subscribe';
 577                         if ($contact['network'] === NETWORK_DFRN || $contact['blocked'] || $contact['readonly']) {
 578                                 $hubmode = 'unsubscribe';
 579                         }
 580
 581                         if (($contact['network'] === NETWORK_OSTATUS ||  $contact['network'] == NETWORK_FEED) && (! $contact['hub-verify'])) {
 582                                 $hub_update = true;
 583                         }
 584
 585                         if ($force) {
 586                                 $hub_update = true;
 587                         }
 588
 589                         logger("Contact ".$contact['id']." returned hub: ".$hub." Network: ".$contact['network']." Relation: ".$contact['rel']." Update: ".$hub_update);
 590
 591                         if (strlen($hub) && $hub_update && (($contact['rel'] != CONTACT_IS_FOLLOWER) || $contact['network'] == NETWORK_FEED)) {
 592                                 logger('hub ' . $hubmode . ' : ' . $hub . ' contact name : ' . $contact['name'] . ' local user : ' . $importer['name']);
 593                                 $hubs = explode(',', $hub);
 594                                 if (count($hubs)) {
 595                                         foreach ($hubs as $h) {
 596                                                 $h = trim($h);
 597                                                 if (!strlen($h)) {
 598                                                         continue;
 599                                                 }
 600                                                 subscribe_to_hub($h, $importer, $contact, $hubmode);
 601                                         }
 602                                 }
 603                         }
 604
 605                         $updated = datetime_convert();
 606
 607                         dba::update('contact', array('last-update' => $updated, 'success_update' => $updated), array('id' => $contact['id']));
 608                         dba::update('gcontact', array('last_contact' => $updated), array('nurl' => $contact['nurl']));
 609                 } elseif (in_array($contact["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, NETWORK_FEED))) {
 610                         $updated = datetime_convert();
 611
 612                         dba::update('contact', array('last-update' => $updated, 'failure_update' => $updated), array('id' => $contact['id']));
 613                         dba::update('gcontact', array('last_failure' => $updated), array('nurl' => $contact['nurl']));
 614                 } else {
 615                         dba::update('contact', array('last-update' => $updated), array('id' => $contact['id']));
 616                 }
 617
 618                 return;
 619         }
 620
 621         private static function RemoveReply($subject) {
 622                 while (in_array(strtolower(substr($subject, 0, 3)), array("re:", "aw:"))) {
 623                         $subject = trim(substr($subject, 4));
 624                 }
 625
 626                 return $subject;
 627         }
 628 }