src/Model/Item.php

   1 <?php
   2
   3 /**
   4  * @file src/Model/Item.php
   5  */
   6
   7 namespace Friendica\Model;
   8
   9 use Friendica\BaseObject;
  10 use Friendica\Content\Text;
  11 use Friendica\Core\Addon;
  12 use Friendica\Core\Config;
  13 use Friendica\Core\L10n;
  14 use Friendica\Core\PConfig;
  15 use Friendica\Core\System;
  16 use Friendica\Core\Worker;
  17 use Friendica\Database\DBM;
  18 use Friendica\Model\Contact;
  19 use Friendica\Model\Conversation;
  20 use Friendica\Model\Group;
  21 use Friendica\Model\Term;
  22 use Friendica\Object\Image;
  23 use Friendica\Protocol\Diaspora;
  24 use Friendica\Protocol\OStatus;
  25 use Friendica\Util\DateTimeFormat;
  26 use Friendica\Util\XML;
  27 use dba;
  28 use Text_LanguageDetect;
  29
  30 require_once 'boot.php';
  31 require_once 'include/items.php';
  32 require_once 'include/text.php';
  33
  34 class Item extends BaseObject
  35 {
  36         /**
  37          * Retrieve a single record from the item table and returns it in an associative array
  38          *
  39          * @brief Retrieve a single record from a table
  40          * @param integer $uid User ID
  41          * @param array  $fields
  42          * @param array  $condition
  43          * @param array  $params
  44          * @return bool|array
  45          * @see dba::select
  46          */
  47         public static function selectFirst($uid, array $fields = [], array $condition = [], $params = [])
  48         {
  49                 $params['limit'] = 1;
  50                 $result = self::select($uid, $fields, $condition, $params);
  51
  52                 if (is_bool($result)) {
  53                         return $result;
  54                 } else {
  55                         $row = dba::fetch($result);
  56                         dba::close($result);
  57                         return $row;
  58                 }
  59         }
  60
  61         /**
  62          * @brief Select rows from the item table
  63          *
  64          * @param integer $uid User ID
  65          * @param array  $fields    Array of selected fields, empty for all
  66          * @param array  $condition Array of fields for condition
  67          * @param array  $params    Array of several parameters
  68          *
  69          * @return boolean|object
  70          */
  71         public static function select($uid, array $selected = [], array $condition = [], $params = [])
  72         {
  73                 $fields = self::fieldlist();
  74
  75                 $select_fields = self::constructSelectFields($fields, $selected);
  76
  77                 $condition_string = dba::buildCondition($condition);
  78
  79                 $condition_string = self::addTablesToFields($condition_string, $fields);
  80
  81                 $condition_string = $condition_string . ' AND ' . self::condition(false);
  82
  83                 $param_string = self::addTablesToFields(dba::buildParameter($params), $fields);
  84
  85                 $table = "`item` " . self::constructJoins($uid, $select_fields . $condition_string . $param_string, false);
  86
  87                 $sql = "SELECT " . $select_fields . " FROM " . $table . $condition_string . $param_string;
  88
  89                 return dba::p($sql, $condition);
  90         }
  91
  92         /**
  93          * Retrieve a single record from the starting post in the item table and returns it in an associative array
  94          *
  95          * @brief Retrieve a single record from a table
  96          * @param integer $uid User ID
  97          * @param array  $fields
  98          * @param array  $condition
  99          * @param array  $params
 100          * @return bool|array
 101          * @see dba::select
 102          */
 103         public static function selectFirstThread($uid, array $fields = [], array $condition = [], $params = [])
 104         {
 105                 $params['limit'] = 1;
 106                 $result = self::selectThread($uid, $fields, $condition, $params);
 107
 108                 if (is_bool($result)) {
 109                         return $result;
 110                 } else {
 111                         $row = dba::fetch($result);
 112                         dba::close($result);
 113                         return $row;
 114                 }
 115         }
 116
 117         /**
 118          * @brief Select rows from the starting post in the item table
 119          *
 120          * @param integer $uid User ID
 121          * @param array  $fields    Array of selected fields, empty for all
 122          * @param array  $condition Array of fields for condition
 123          * @param array  $params    Array of several parameters
 124          *
 125          * @return boolean|object
 126          */
 127         public static function selectThread($uid, array $selected = [], array $condition = [], $params = [])
 128         {
 129                 $fields = self::fieldlist();
 130
 131                 $threadfields = ['thread' => ['iid', 'uid', 'contact-id', 'owner-id', 'author-id',
 132                         'created', 'edited', 'commented', 'received', 'changed', 'wall', 'private',
 133                         'pubmail', 'moderated', 'visible', 'starred', 'ignored', 'bookmark',
 134                         'unseen', 'deleted', 'origin', 'forum_mode', 'mention', 'network']];
 135
 136                 $select_fields = self::constructSelectFields($fields, $selected);
 137
 138                 $condition_string = dba::buildCondition($condition);
 139
 140                 $condition_string = self::addTablesToFields($condition_string, $threadfields);
 141                 $condition_string = self::addTablesToFields($condition_string, $fields);
 142
 143                 $condition_string = $condition_string . ' AND ' . self::condition(true);
 144
 145                 $param_string = dba::buildParameter($params);
 146                 $param_string = self::addTablesToFields($param_string, $threadfields);
 147                 $param_string = self::addTablesToFields($param_string, $fields);
 148
 149                 $table = "`thread` " . self::constructJoins($uid, $select_fields . $condition_string . $param_string, true);
 150
 151                 $sql = "SELECT " . $select_fields . " FROM " . $table . $condition_string . $param_string;
 152
 153                 return dba::p($sql, $condition);
 154         }
 155
 156         /**
 157          * @brief Returns a list of fields that are associated with the item table
 158          *
 159          * @return array field list
 160          */
 161         private static function fieldlist()
 162         {
 163                 $item_fields = ['author-id', 'owner-id', 'contact-id', 'uid', 'id', 'parent',
 164                         'uri', 'thr-parent', 'parent-uri', 'content-warning',
 165                         'commented', 'created', 'edited', 'received', 'verb', 'object-type', 'postopts', 'plink',
 166                         'guid', 'wall', 'private', 'starred', 'origin', 'title', 'body', 'file', 'event-id',
 167                         'location', 'coord', 'app', 'attach', 'rendered-hash', 'rendered-html', 'object',
 168                         'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid',
 169                         'id' => 'item_id', 'network' => 'item_network'];
 170
 171                 $author_fields = ['url' => 'author-link', 'name' => 'author-name', 'thumb' => 'author-avatar'];
 172                 $owner_fields = ['url' => 'owner-link', 'name' => 'owner-name', 'thumb' => 'owner-avatar'];
 173                 $contact_fields = ['url' => 'contact-link', 'name' => 'contact-name', 'thumb' => 'contact-avatar',
 174                         'network', 'url', 'name', 'writable', 'self', 'id' => 'cid', 'alias'];
 175
 176                 $event_fields = ['created' => 'event-created', 'edited' => 'event-edited',
 177                         'start' => 'event-start','finish' => 'event-finish',
 178                         'summary' => 'event-summary','desc' => 'event-desc',
 179                         'location' => 'event-location', 'type' => 'event-type',
 180                         'nofinish' => 'event-nofinish','adjust' => 'event-adjust',
 181                         'ignore' => 'event-ignore', 'id' => 'event-id'];
 182
 183                 return ['item' => $item_fields, 'author' => $author_fields, 'owner' => $owner_fields,
 184                         'contact' => $contact_fields, 'event' => $event_fields];
 185         }
 186
 187         /**
 188          * @brief Returns SQL condition for the "select" functions
 189          *
 190          * @param boolean $thread_mode Called for the items (false) or for the threads (true)
 191          *
 192          * @return string SQL condition
 193          */
 194         private static function condition($thread_mode)
 195         {
 196                 if ($thread_mode) {
 197                         $master_table = "`thread`";
 198                 } else {
 199                         $master_table = "`item`";
 200                 }
 201                 return "$master_table.`visible` AND NOT $master_table.`deleted` AND NOT $master_table.`moderated` AND (`user-item`.`hidden` IS NULL OR NOT `user-item`.`hidden`) ";
 202         }
 203
 204         /**
 205          * @brief Returns all needed "JOIN" commands for the "select" functions
 206          *
 207          * @param integer $uid User ID
 208          * @param string $sql_commands The parts of the built SQL commands in the "select" functions
 209          * @param boolean $thread_mode Called for the items (false) or for the threads (true)
 210          *
 211          * @return string The SQL joins for the "select" functions
 212          */
 213         private static function constructJoins($uid, $sql_commands, $thread_mode)
 214         {
 215                 if ($thread_mode) {
 216                         $master_table = "`thread`";
 217                         $master_table_key = "`thread`.`iid`";
 218                         $joins = "STRAIGHT_JOIN `item` ON `item`.`id` = `thread`.`iid` ";
 219                 } else {
 220                         $master_table = "`item`";
 221                         $master_table_key = "`item`.`id`";
 222                         $joins = '';
 223                 }
 224
 225                 $joins .= sprintf("STRAIGHT_JOIN `contact` ON `contact`.`id` = $master_table.`contact-id`
 226                         AND NOT `contact`.`blocked`
 227                         AND ((NOT `contact`.`readonly` AND NOT `contact`.`pending` AND (`contact`.`rel` IN (%s, %s)))
 228                         OR `contact`.`self` OR (`item`.`id` != `item`.`parent`) OR `contact`.`uid` = 0)
 229                         STRAIGHT_JOIN `contact` AS `author` ON `author`.`id` = $master_table.`author-id` AND NOT `author`.`blocked`
 230                         STRAIGHT_JOIN `contact` AS `owner` ON `owner`.`id` = $master_table.`owner-id` AND NOT `owner`.`blocked`
 231                         LEFT JOIN `user-item` ON `user-item`.`iid` = $master_table_key AND `user-item`.`uid` = %d",
 232                         CONTACT_IS_SHARING, CONTACT_IS_FRIEND, intval($uid));
 233
 234                 if (strpos($sql_commands, "`group_member`.") !== false) {
 235                         $joins .= " STRAIGHT_JOIN `group_member` ON `group_member`.`contact-id` = $master_table.`contact-id`";
 236                 }
 237
 238                 if (strpos($sql_commands, "`user`.") !== false) {
 239                         $joins .= " STRAIGHT_JOIN `user` ON `user`.`uid` = $master_table.`uid`";
 240                 }
 241
 242                 if (strpos($sql_commands, "`event`.") !== false) {
 243                         $joins .= " LEFT JOIN `event` ON `event-id` = `event`.`id`";
 244                 }
 245
 246                 return $joins;
 247         }
 248
 249         /**
 250          * @brief Add the field list for the "select" functions
 251          *
 252          * @param array $fields The field definition array
 253          * @param array $selected The array with the selected fields from the "select" functions
 254          *
 255          * @return string The field list
 256          */
 257         private static function constructSelectFields($fields, $selected)
 258         {
 259                 $selection = [];
 260                 foreach ($fields as $table => $table_fields) {
 261                         foreach ($table_fields as $field => $select) {
 262                                 if (empty($selected) || in_array($select, $selected)) {
 263                                         if (is_int($field)) {
 264                                                 $selection[] = "`" . $table . "`.`".$select."`";
 265                                         } else {
 266                                                 $selection[] = "`" . $table . "`.`" . $field . "` AS `".$select ."`";
 267                                         }
 268                                 }
 269                         }
 270                 }
 271                 return implode(", ", $selection);
 272         }
 273
 274         /**
 275          * @brief add table definition to fields in an SQL query
 276          *
 277          * @param string $query SQL query
 278          * @param array $fields The field definition array
 279          *
 280          * @return string the changed SQL query
 281          */
 282         private static function addTablesToFields($query, $fields)
 283         {
 284                 foreach ($fields as $table => $table_fields) {
 285                         foreach ($table_fields as $alias => $field) {
 286                                 if (is_int($alias)) {
 287                                         $replace_field = $field;
 288                                 } else {
 289                                         $replace_field = $alias;
 290                                 }
 291
 292                                 $search = "/([^\.])`" . $field . "`/i";
 293                                 $replace = "$1`" . $table . "`.`" . $replace_field . "`";
 294                                 $query = preg_replace($search, $replace, $query);
 295                         }
 296                 }
 297                 return $query;
 298         }
 299
 300         /**
 301          * @brief Update existing item entries
 302          *
 303          * @param array $fields The fields that are to be changed
 304          * @param array $condition The condition for finding the item entries
 305          *
 306          * In the future we may have to change permissions as well.
 307          * Then we had to add the user id as third parameter.
 308          *
 309          * A return value of "0" doesn't mean an error - but that 0 rows had been changed.
 310          *
 311          * @return integer|boolean number of affected rows - or "false" if there was an error
 312          */
 313         public static function update(array $fields, array $condition)
 314         {
 315                 if (empty($condition) || empty($fields)) {
 316                         return false;
 317                 }
 318
 319                 // To ensure the data integrity we do it in an transaction
 320                 dba::transaction();
 321
 322                 // We cannot simply expand the condition to check for origin entries
 323                 // The condition needn't to be a simple array but could be a complex condition.
 324                 // And we have to execute this query before the update to ensure to fetch the same data.
 325                 $items = dba::select('item', ['id', 'origin'], $condition);
 326
 327                 $success = dba::update('item', $fields, $condition);
 328
 329                 if (!$success) {
 330                         dba::close($items);
 331                         dba::rollback();
 332                         return false;
 333                 }
 334
 335                 $rows = dba::affected_rows();
 336
 337                 while ($item = dba::fetch($items)) {
 338                         Term::insertFromTagFieldByItemId($item['id']);
 339                         Term::insertFromFileFieldByItemId($item['id']);
 340                         self::updateThread($item['id']);
 341
 342                         // We only need to notfiy others when it is an original entry from us.
 343                         // Only call the notifier when the item has some content relevant change.
 344                         if ($item['origin'] && in_array('edited', array_keys($fields))) {
 345                                 Worker::add(PRIORITY_HIGH, "Notifier", 'edit_post', $item['id']);
 346                         }
 347                 }
 348
 349                 dba::close($items);
 350                 dba::commit();
 351                 return $rows;
 352         }
 353
 354         /**
 355          * @brief Delete an item and notify others about it - if it was ours
 356          *
 357          * @param array $condition The condition for finding the item entries
 358          * @param integer $priority Priority for the notification
 359          */
 360         public static function delete($condition, $priority = PRIORITY_HIGH)
 361         {
 362                 $items = dba::select('item', ['id'], $condition);
 363                 while ($item = dba::fetch($items)) {
 364                         self::deleteById($item['id'], $priority);
 365                 }
 366                 dba::close($items);
 367         }
 368
 369         /**
 370          * @brief Delete an item for an user and notify others about it - if it was ours
 371          *
 372          * @param array $condition The condition for finding the item entries
 373          * @param integer $uid User who wants to delete this item
 374          */
 375         public static function deleteForUser($condition, $uid)
 376         {
 377                 if ($uid == 0) {
 378                         return;
 379                 }
 380
 381                 $items = dba::select('item', ['id', 'uid'], $condition);
 382                 while ($item = dba::fetch($items)) {
 383                         // "Deleting" global items just means hiding them
 384                         if ($item['uid'] == 0) {
 385                                 dba::update('user-item', ['hidden' => true], ['iid' => $item['id'], 'uid' => $uid], true);
 386                         } elseif ($item['uid'] == $uid) {
 387                                 self::deleteById($item['id'], PRIORITY_HIGH);
 388                         } else {
 389                                 logger('Wrong ownership. Not deleting item ' . $item['id']);
 390                         }
 391                 }
 392                 dba::close($items);
 393         }
 394
 395         /**
 396          * @brief Delete an item and notify others about it - if it was ours
 397          *
 398          * @param integer $item_id Item ID that should be delete
 399          * @param integer $priority Priority for the notification
 400          *
 401          * @return boolean success
 402          */
 403         private static function deleteById($item_id, $priority = PRIORITY_HIGH)
 404         {
 405                 // locate item to be deleted
 406                 $fields = ['id', 'uri', 'uid', 'parent', 'parent-uri', 'origin',
 407                         'deleted', 'file', 'resource-id', 'event-id', 'attach',
 408                         'verb', 'object-type', 'object', 'target', 'contact-id'];
 409                 $item = dba::selectFirst('item', $fields, ['id' => $item_id]);
 410                 if (!DBM::is_result($item)) {
 411                         logger('Item with ID ' . $item_id . " hasn't been found.", LOGGER_DEBUG);
 412                         return false;
 413                 }
 414
 415                 if ($item['deleted']) {
 416                         logger('Item with ID ' . $item_id . ' has already been deleted.', LOGGER_DEBUG);
 417                         return false;
 418                 }
 419
 420                 $parent = dba::selectFirst('item', ['origin'], ['id' => $item['parent']]);
 421                 if (!DBM::is_result($parent)) {
 422                         $parent = ['origin' => false];
 423                 }
 424
 425                 // clean up categories and tags so they don't end up as orphans
 426
 427                 $matches = false;
 428                 $cnt = preg_match_all('/<(.*?)>/', $item['file'], $matches, PREG_SET_ORDER);
 429                 if ($cnt) {
 430                         foreach ($matches as $mtch) {
 431                                 file_tag_unsave_file($item['uid'], $item['id'], $mtch[1],true);
 432                         }
 433                 }
 434
 435                 $matches = false;
 436
 437                 $cnt = preg_match_all('/\[(.*?)\]/', $item['file'], $matches, PREG_SET_ORDER);
 438                 if ($cnt) {
 439                         foreach ($matches as $mtch) {
 440                                 file_tag_unsave_file($item['uid'], $item['id'], $mtch[1],false);
 441                         }
 442                 }
 443
 444                 /*
 445                  * If item is a link to a photo resource, nuke all the associated photos
 446                  * (visitors will not have photo resources)
 447                  * This only applies to photos uploaded from the photos page. Photos inserted into a post do not
 448                  * generate a resource-id and therefore aren't intimately linked to the item.
 449                  */
 450                 if (strlen($item['resource-id'])) {
 451                         dba::delete('photo', ['resource-id' => $item['resource-id'], 'uid' => $item['uid']]);
 452                 }
 453
 454                 // If item is a link to an event, delete the event.
 455                 if (intval($item['event-id'])) {
 456                         Event::delete($item['event-id']);
 457                 }
 458
 459                 // If item has attachments, drop them
 460                 foreach (explode(", ", $item['attach']) as $attach) {
 461                         preg_match("|attach/(\d+)|", $attach, $matches);
 462                         dba::delete('attach', ['id' => $matches[1], 'uid' => $item['uid']]);
 463                 }
 464
 465                 // Delete tags that had been attached to other items
 466                 self::deleteTagsFromItem($item);
 467
 468                 // Set the item to "deleted"
 469                 dba::update('item', ['deleted' => true, 'title' => '', 'body' => '',
 470                                         'edited' => DateTimeFormat::utcNow(), 'changed' => DateTimeFormat::utcNow()],
 471                                 ['id' => $item['id']]);
 472
 473                 Term::insertFromTagFieldByItemId($item['id']);
 474                 Term::insertFromFileFieldByItemId($item['id']);
 475                 self::deleteThread($item['id'], $item['parent-uri']);
 476
 477                 if (!dba::exists('item', ["`uri` = ? AND `uid` != 0 AND NOT `deleted`", $item['uri']])) {
 478                         self::delete(['uri' => $item['uri'], 'uid' => 0, 'deleted' => false], $priority);
 479                 }
 480
 481                 // If it's the parent of a comment thread, kill all the kids
 482                 if ($item['id'] == $item['parent']) {
 483                         self::delete(['parent' => $item['parent'], 'deleted' => false], $priority);
 484                 }
 485
 486                 // Is it our comment and/or our thread?
 487                 if ($item['origin'] || $parent['origin']) {
 488
 489                         // When we delete the original post we will delete all existing copies on the server as well
 490                         self::delete(['uri' => $item['uri'], 'deleted' => false], $priority);
 491
 492                         // send the notification upstream/downstream
 493                         Worker::add(['priority' => $priority, 'dont_fork' => true], "Notifier", "drop", intval($item['id']));
 494                 } elseif ($item['uid'] != 0) {
 495
 496                         // When we delete just our local user copy of an item, we have to set a marker to hide it
 497                         $global_item = dba::selectFirst('item', ['id'], ['uri' => $item['uri'], 'uid' => 0, 'deleted' => false]);
 498                         if (DBM::is_result($global_item)) {
 499                                 dba::update('user-item', ['hidden' => true], ['iid' => $global_item['id'], 'uid' => $item['uid']], true);
 500                         }
 501                 }
 502
 503                 logger('Item with ID ' . $item_id . " has been deleted.", LOGGER_DEBUG);
 504
 505                 return true;
 506         }
 507
 508         private static function deleteTagsFromItem($item)
 509         {
 510                 if (($item["verb"] != ACTIVITY_TAG) || ($item["object-type"] != ACTIVITY_OBJ_TAGTERM)) {
 511                         return;
 512                 }
 513
 514                 $xo = XML::parseString($item["object"], false);
 515                 $xt = XML::parseString($item["target"], false);
 516
 517                 if ($xt->type != ACTIVITY_OBJ_NOTE) {
 518                         return;
 519                 }
 520
 521                 $i = dba::selectFirst('item', ['id', 'contact-id', 'tag'], ['uri' => $xt->id, 'uid' => $item['uid']]);
 522                 if (!DBM::is_result($i)) {
 523                         return;
 524                 }
 525
 526                 // For tags, the owner cannot remove the tag on the author's copy of the post.
 527                 $owner_remove = ($item["contact-id"] == $i["contact-id"]);
 528                 $author_copy = $item["origin"];
 529
 530                 if (($owner_remove && $author_copy) || !$owner_remove) {
 531                         return;
 532                 }
 533
 534                 $tags = explode(',', $i["tag"]);
 535                 $newtags = [];
 536                 if (count($tags)) {
 537                         foreach ($tags as $tag) {
 538                                 if (trim($tag) !== trim($xo->body)) {
 539                                        $newtags[] = trim($tag);
 540                                 }
 541                         }
 542                 }
 543                 self::update(['tag' => implode(',', $newtags)], ['id' => $i["id"]]);
 544         }
 545
 546         private static function guid($item, $notify)
 547         {
 548                 $guid = notags(trim($item['guid']));
 549
 550                 if (!empty($guid)) {
 551                         return $guid;
 552                 }
 553
 554                 if ($notify) {
 555                         // We have to avoid duplicates. So we create the GUID in form of a hash of the plink or uri.
 556                         // We add the hash of our own host because our host is the original creator of the post.
 557                         $prefix_host = get_app()->get_hostname();
 558                 } else {
 559                         $prefix_host = '';
 560
 561                         // We are only storing the post so we create a GUID from the original hostname.
 562                         if (!empty($item['author-link'])) {
 563                                 $parsed = parse_url($item['author-link']);
 564                                 if (!empty($parsed['host'])) {
 565                                         $prefix_host = $parsed['host'];
 566                                 }
 567                         }
 568
 569                         if (empty($prefix_host) && !empty($item['plink'])) {
 570                                 $parsed = parse_url($item['plink']);
 571                                 if (!empty($parsed['host'])) {
 572                                         $prefix_host = $parsed['host'];
 573                                 }
 574                         }
 575
 576                         if (empty($prefix_host) && !empty($item['uri'])) {
 577                                 $parsed = parse_url($item['uri']);
 578                                 if (!empty($parsed['host'])) {
 579                                         $prefix_host = $parsed['host'];
 580                                 }
 581                         }
 582
 583                         // Is it in the format data@host.tld? - Used for mail contacts
 584                         if (empty($prefix_host) && !empty($item['author-link']) && strstr($item['author-link'], '@')) {
 585                                 $mailparts = explode('@', $item['author-link']);
 586                                 $prefix_host = array_pop($mailparts);
 587                         }
 588                 }
 589
 590                 if (!empty($item['plink'])) {
 591                         $guid = self::guidFromUri($item['plink'], $prefix_host);
 592                 } elseif (!empty($item['uri'])) {
 593                         $guid = self::guidFromUri($item['uri'], $prefix_host);
 594                 } else {
 595                         $guid = get_guid(32, hash('crc32', $prefix_host));
 596                 }
 597
 598                 return $guid;
 599         }
 600
 601         private static function contactId($item)
 602         {
 603                 $contact_id = (int)$item["contact-id"];
 604
 605                 if (!empty($contact_id)) {
 606                         return $contact_id;
 607                 }
 608                 logger('Missing contact-id. Called by: '.System::callstack(), LOGGER_DEBUG);
 609                 /*
 610                  * First we are looking for a suitable contact that matches with the author of the post
 611                  * This is done only for comments
 612                  */
 613                 if ($item['parent-uri'] != $item['uri']) {
 614                         $contact_id = Contact::getIdForURL($item['author-link'], $item['uid']);
 615                 }
 616
 617                 // If not present then maybe the owner was found
 618                 if ($contact_id == 0) {
 619                         $contact_id = Contact::getIdForURL($item['owner-link'], $item['uid']);
 620                 }
 621
 622                 // Still missing? Then use the "self" contact of the current user
 623                 if ($contact_id == 0) {
 624                         $self = dba::selectFirst('contact', ['id'], ['self' => true, 'uid' => $item['uid']]);
 625                         if (DBM::is_result($self)) {
 626                                 $contact_id = $self["id"];
 627                         }
 628                 }
 629                 logger("Contact-id was missing for post ".$item['guid']." from user id ".$item['uid']." - now set to ".$contact_id, LOGGER_DEBUG);
 630
 631                 return $contact_id;
 632         }
 633
 634         public static function insert($item, $force_parent = false, $notify = false, $dontcache = false)
 635         {
 636                 $a = get_app();
 637
 638                 // If it is a posting where users should get notifications, then define it as wall posting
 639                 if ($notify) {
 640                         $item['wall'] = 1;
 641                         $item['type'] = 'wall';
 642                         $item['origin'] = 1;
 643                         $item['network'] = NETWORK_DFRN;
 644                         $item['protocol'] = PROTOCOL_DFRN;
 645
 646                         if (is_int($notify)) {
 647                                 $priority = $notify;
 648                         } else {
 649                                 $priority = PRIORITY_HIGH;
 650                         }
 651                 } else {
 652                         $item['network'] = trim(defaults($item, 'network', NETWORK_PHANTOM));
 653                 }
 654
 655                 $item['guid'] = self::guid($item, $notify);
 656                 $item['uri'] = notags(trim(defaults($item, 'uri', item_new_uri($a->get_hostname(), $item['uid'], $item['guid']))));
 657
 658                 // Store conversation data
 659                 $item = Conversation::insert($item);
 660
 661                 /*
 662                  * If a Diaspora signature structure was passed in, pull it out of the
 663                  * item array and set it aside for later storage.
 664                  */
 665
 666                 $dsprsig = null;
 667                 if (x($item, 'dsprsig')) {
 668                         $encoded_signature = $item['dsprsig'];
 669                         $dsprsig = json_decode(base64_decode($item['dsprsig']));
 670                         unset($item['dsprsig']);
 671                 }
 672
 673                 if (!empty($item['diaspora_signed_text'])) {
 674                         $diaspora_signed_text = $item['diaspora_signed_text'];
 675                         unset($item['diaspora_signed_text']);
 676                 } else {
 677                         $diaspora_signed_text = '';
 678                 }
 679
 680                 // Converting the plink
 681                 /// @TODO Check if this is really still needed
 682                 if ($item['network'] == NETWORK_OSTATUS) {
 683                         if (isset($item['plink'])) {
 684                                 $item['plink'] = OStatus::convertHref($item['plink']);
 685                         } elseif (isset($item['uri'])) {
 686                                 $item['plink'] = OStatus::convertHref($item['uri']);
 687                         }
 688                 }
 689
 690                 if (!empty($item['thr-parent'])) {
 691                         $item['parent-uri'] = $item['thr-parent'];
 692                 }
 693
 694                 if (x($item, 'gravity')) {
 695                         $item['gravity'] = intval($item['gravity']);
 696                 } elseif ($item['parent-uri'] === $item['uri']) {
 697                         $item['gravity'] = 0;
 698                 } elseif (activity_match($item['verb'],ACTIVITY_POST)) {
 699                         $item['gravity'] = 6;
 700                 } else {
 701                         $item['gravity'] = 6;   // extensible catchall
 702                 }
 703
 704                 $item['type'] = defaults($item, 'type', 'remote');
 705
 706                 $uid = intval($item['uid']);
 707
 708                 // check for create date and expire time
 709                 $expire_interval = Config::get('system', 'dbclean-expire-days', 0);
 710
 711                 $user = dba::selectFirst('user', ['expire'], ['uid' => $uid]);
 712                 if (DBM::is_result($user) && ($user['expire'] > 0) && (($user['expire'] < $expire_interval) || ($expire_interval == 0))) {
 713                         $expire_interval = $user['expire'];
 714                 }
 715
 716                 if (($expire_interval > 0) && !empty($item['created'])) {
 717                         $expire_date = time() - ($expire_interval * 86400);
 718                         $created_date = strtotime($item['created']);
 719                         if ($created_date < $expire_date) {
 720                                 logger('item-store: item created ('.date('c', $created_date).') before expiration time ('.date('c', $expire_date).'). ignored. ' . print_r($item,true), LOGGER_DEBUG);
 721                                 return 0;
 722                         }
 723                 }
 724
 725                 /*
 726                  * Do we already have this item?
 727                  * We have to check several networks since Friendica posts could be repeated
 728                  * via OStatus (maybe Diasporsa as well)
 729                  */
 730                 if (in_array($item['network'], [NETWORK_DIASPORA, NETWORK_DFRN, NETWORK_OSTATUS, ""])) {
 731                         $condition = ["`uri` = ? AND `uid` = ? AND `network` IN (?, ?, ?)",
 732                                 trim($item['uri']), $item['uid'],
 733                                 NETWORK_DIASPORA, NETWORK_DFRN, NETWORK_OSTATUS];
 734                         $existing = dba::selectFirst('item', ['id', 'network'], $condition);
 735                         if (DBM::is_result($existing)) {
 736                                 // We only log the entries with a different user id than 0. Otherwise we would have too many false positives
 737                                 if ($uid != 0) {
 738                                         logger("Item with uri ".$item['uri']." already existed for user ".$uid." with id ".$existing["id"]." target network ".$existing["network"]." - new network: ".$item['network']);
 739                                 }
 740
 741                                 return $existing["id"];
 742                         }
 743                 }
 744
 745                 self::addLanguageInPostopts($item);
 746
 747                 $item['wall']          = intval(defaults($item, 'wall', 0));
 748                 $item['extid']         = trim(defaults($item, 'extid', ''));
 749                 $item['author-name']   = trim(defaults($item, 'author-name', ''));
 750                 $item['author-link']   = trim(defaults($item, 'author-link', ''));
 751                 $item['author-avatar'] = trim(defaults($item, 'author-avatar', ''));
 752                 $item['owner-name']    = trim(defaults($item, 'owner-name', ''));
 753                 $item['owner-link']    = trim(defaults($item, 'owner-link', ''));
 754                 $item['owner-avatar']  = trim(defaults($item, 'owner-avatar', ''));
 755                 $item['received']      = ((x($item, 'received') !== false) ? DateTimeFormat::utc($item['received']) : DateTimeFormat::utcNow());
 756                 $item['created']       = ((x($item, 'created') !== false) ? DateTimeFormat::utc($item['created']) : $item['received']);
 757                 $item['edited']        = ((x($item, 'edited') !== false) ? DateTimeFormat::utc($item['edited']) : $item['created']);
 758                 $item['changed']       = ((x($item, 'changed') !== false) ? DateTimeFormat::utc($item['changed']) : $item['created']);
 759                 $item['commented']     = ((x($item, 'commented') !== false) ? DateTimeFormat::utc($item['commented']) : $item['created']);
 760                 $item['title']         = trim(defaults($item, 'title', ''));
 761                 $item['location']      = trim(defaults($item, 'location', ''));
 762                 $item['coord']         = trim(defaults($item, 'coord', ''));
 763                 $item['visible']       = ((x($item, 'visible') !== false) ? intval($item['visible'])         : 1);
 764                 $item['deleted']       = 0;
 765                 $item['parent-uri']    = trim(defaults($item, 'parent-uri', $item['uri']));
 766                 $item['verb']          = trim(defaults($item, 'verb', ''));
 767                 $item['object-type']   = trim(defaults($item, 'object-type', ''));
 768                 $item['object']        = trim(defaults($item, 'object', ''));
 769                 $item['target-type']   = trim(defaults($item, 'target-type', ''));
 770                 $item['target']        = trim(defaults($item, 'target', ''));
 771                 $item['plink']         = trim(defaults($item, 'plink', ''));
 772                 $item['allow_cid']     = trim(defaults($item, 'allow_cid', ''));
 773                 $item['allow_gid']     = trim(defaults($item, 'allow_gid', ''));
 774                 $item['deny_cid']      = trim(defaults($item, 'deny_cid', ''));
 775                 $item['deny_gid']      = trim(defaults($item, 'deny_gid', ''));
 776                 $item['private']       = intval(defaults($item, 'private', 0));
 777                 $item['bookmark']      = intval(defaults($item, 'bookmark', 0));
 778                 $item['body']          = trim(defaults($item, 'body', ''));
 779                 $item['tag']           = trim(defaults($item, 'tag', ''));
 780                 $item['attach']        = trim(defaults($item, 'attach', ''));
 781                 $item['app']           = trim(defaults($item, 'app', ''));
 782                 $item['origin']        = intval(defaults($item, 'origin', 0));
 783                 $item['postopts']      = trim(defaults($item, 'postopts', ''));
 784                 $item['resource-id']   = trim(defaults($item, 'resource-id', ''));
 785                 $item['event-id']      = intval(defaults($item, 'event-id', 0));
 786                 $item['inform']        = trim(defaults($item, 'inform', ''));
 787                 $item['file']          = trim(defaults($item, 'file', ''));
 788
 789                 // When there is no content then we don't post it
 790                 if ($item['body'].$item['title'] == '') {
 791                         return 0;
 792                 }
 793
 794                 // Items cannot be stored before they happen ...
 795                 if ($item['created'] > DateTimeFormat::utcNow()) {
 796                         $item['created'] = DateTimeFormat::utcNow();
 797                 }
 798
 799                 // We haven't invented time travel by now.
 800                 if ($item['edited'] > DateTimeFormat::utcNow()) {
 801                         $item['edited'] = DateTimeFormat::utcNow();
 802                 }
 803
 804                 if (($item['author-link'] == "") && ($item['owner-link'] == "")) {
 805                         logger("Both author-link and owner-link are empty. Called by: " . System::callstack(), LOGGER_DEBUG);
 806                 }
 807
 808                 $item['plink'] = defaults($item, 'plink', System::baseUrl() . '/display/' . urlencode($item['guid']));
 809
 810                 // The contact-id should be set before "self::insert" was called - but there seems to be issues sometimes
 811                 $item["contact-id"] = self::contactId($item);
 812
 813                 $default = ['url' => $item['author-link'], 'name' => $item['author-name'],
 814                         'photo' => $item['author-avatar'], 'network' => $item['network']];
 815
 816                 $item['author-id'] = defaults($item, 'author-id', Contact::getIdForURL($item["author-link"], 0, false, $default));
 817
 818                 if (Contact::isBlocked($item["author-id"])) {
 819                         logger('Contact '.$item["author-id"].' is blocked, item '.$item["uri"].' will not be stored');
 820                         return 0;
 821                 }
 822
 823                 $default = ['url' => $item['owner-link'], 'name' => $item['owner-name'],
 824                         'photo' => $item['owner-avatar'], 'network' => $item['network']];
 825
 826                 $item['owner-id'] = defaults($item, 'owner-id', Contact::getIdForURL($item["owner-link"], 0, false, $default));
 827
 828                 if (Contact::isBlocked($item["owner-id"])) {
 829                         logger('Contact '.$item["owner-id"].' is blocked, item '.$item["uri"].' will not be stored');
 830                         return 0;
 831                 }
 832
 833                 //unset($item['author-link']);
 834                 //unset($item['author-name']);
 835                 //unset($item['author-avatar']);
 836
 837                 //unset($item['owner-link']);
 838                 unset($item['owner-name']);
 839                 unset($item['owner-avatar']);
 840
 841                 if ($item['network'] == NETWORK_PHANTOM) {
 842                         logger('Missing network. Called by: '.System::callstack(), LOGGER_DEBUG);
 843
 844                         $contact = Contact::getDetailsByURL($item['author-link'], $item['uid']);
 845                         if (!empty($contact['network'])) {
 846                                 $item['network'] = $contact["network"];
 847                         } else {
 848                                 $item['network'] = NETWORK_DFRN;
 849                         }
 850                         logger("Set network to " . $item["network"] . " for " . $item["uri"], LOGGER_DEBUG);
 851                 }
 852
 853                 // Checking if there is already an item with the same guid
 854                 logger('Checking for an item for user '.$item['uid'].' on network '.$item['network'].' with the guid '.$item['guid'], LOGGER_DEBUG);
 855                 $condition = ['guid' => $item['guid'], 'network' => $item['network'], 'uid' => $item['uid']];
 856                 if (dba::exists('item', $condition)) {
 857                         logger('found item with guid '.$item['guid'].' for user '.$item['uid'].' on network '.$item['network'], LOGGER_DEBUG);
 858                         return 0;
 859                 }
 860
 861                 // Check for hashtags in the body and repair or add hashtag links
 862                 self::setHashtags($item);
 863
 864                 $item['thr-parent'] = $item['parent-uri'];
 865
 866                 $notify_type = '';
 867                 $allow_cid = '';
 868                 $allow_gid = '';
 869                 $deny_cid  = '';
 870                 $deny_gid  = '';
 871
 872                 if ($item['parent-uri'] === $item['uri']) {
 873                         $parent_id = 0;
 874                         $parent_deleted = 0;
 875                         $allow_cid = $item['allow_cid'];
 876                         $allow_gid = $item['allow_gid'];
 877                         $deny_cid  = $item['deny_cid'];
 878                         $deny_gid  = $item['deny_gid'];
 879                         $notify_type = 'wall-new';
 880                 } else {
 881                         // find the parent and snarf the item id and ACLs
 882                         // and anything else we need to inherit
 883
 884                         $fields = ['uri', 'parent-uri', 'id', 'deleted',
 885                                 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid',
 886                                 'wall', 'private', 'forum_mode', 'origin'];
 887                         $condition = ['uri' => $item['parent-uri'], 'uid' => $item['uid']];
 888                         $params = ['order' => ['id' => false]];
 889                         $parent = dba::selectFirst('item', $fields, $condition, $params);
 890
 891                         if (DBM::is_result($parent)) {
 892                                 // is the new message multi-level threaded?
 893                                 // even though we don't support it now, preserve the info
 894                                 // and re-attach to the conversation parent.
 895
 896                                 if ($parent['uri'] != $parent['parent-uri']) {
 897                                         $item['parent-uri'] = $parent['parent-uri'];
 898
 899                                         $condition = ['uri' => $item['parent-uri'],
 900                                                 'parent-uri' => $item['parent-uri'],
 901                                                 'uid' => $item['uid']];
 902                                         $params = ['order' => ['id' => false]];
 903                                         $toplevel_parent = dba::selectFirst('item', $fields, $condition, $params);
 904
 905                                         if (DBM::is_result($toplevel_parent)) {
 906                                                 $parent = $toplevel_parent;
 907                                         }
 908                                 }
 909
 910                                 $parent_id      = $parent['id'];
 911                                 $parent_deleted = $parent['deleted'];
 912                                 $allow_cid      = $parent['allow_cid'];
 913                                 $allow_gid      = $parent['allow_gid'];
 914                                 $deny_cid       = $parent['deny_cid'];
 915                                 $deny_gid       = $parent['deny_gid'];
 916                                 $item['wall']    = $parent['wall'];
 917                                 $notify_type    = 'comment-new';
 918
 919                                 /*
 920                                  * If the parent is private, force privacy for the entire conversation
 921                                  * This differs from the above settings as it subtly allows comments from
 922                                  * email correspondents to be private even if the overall thread is not.
 923                                  */
 924                                 if ($parent['private']) {
 925                                         $item['private'] = $parent['private'];
 926                                 }
 927
 928                                 /*
 929                                  * Edge case. We host a public forum that was originally posted to privately.
 930                                  * The original author commented, but as this is a comment, the permissions
 931                                  * weren't fixed up so it will still show the comment as private unless we fix it here.
 932                                  */
 933                                 if ((intval($parent['forum_mode']) == 1) && $parent['private']) {
 934                                         $item['private'] = 0;
 935                                 }
 936
 937                                 // If its a post from myself then tag the thread as "mention"
 938                                 logger("Checking if parent ".$parent_id." has to be tagged as mention for user ".$item['uid'], LOGGER_DEBUG);
 939                                 $user = dba::selectFirst('user', ['nickname'], ['uid' => $item['uid']]);
 940                                 if (DBM::is_result($user)) {
 941                                         $self = normalise_link(System::baseUrl() . '/profile/' . $user['nickname']);
 942                                         logger("'myself' is ".$self." for parent ".$parent_id." checking against ".$item['author-link']." and ".$item['owner-link'], LOGGER_DEBUG);
 943                                         if ((normalise_link($item['author-link']) == $self) || (normalise_link($item['owner-link']) == $self)) {
 944                                                 dba::update('thread', ['mention' => true], ['iid' => $parent_id]);
 945                                                 logger("tagged thread ".$parent_id." as mention for user ".$self, LOGGER_DEBUG);
 946                                         }
 947                                 }
 948                         } else {
 949                                 /*
 950                                  * Allow one to see reply tweets from status.net even when
 951                                  * we don't have or can't see the original post.
 952                                  */
 953                                 if ($force_parent) {
 954                                         logger('$force_parent=true, reply converted to top-level post.');
 955                                         $parent_id = 0;
 956                                         $item['parent-uri'] = $item['uri'];
 957                                         $item['gravity'] = 0;
 958                                 } else {
 959                                         logger('item parent '.$item['parent-uri'].' for '.$item['uid'].' was not found - ignoring item');
 960                                         return 0;
 961                                 }
 962
 963                                 $parent_deleted = 0;
 964                         }
 965                 }
 966
 967                 $condition = ["`uri` = ? AND `network` IN (?, ?) AND `uid` = ?",
 968                         $item['uri'], $item['network'], NETWORK_DFRN, $item['uid']];
 969                 if (dba::exists('item', $condition)) {
 970                         logger('duplicated item with the same uri found. '.print_r($item,true));
 971                         return 0;
 972                 }
 973
 974                 // On Friendica and Diaspora the GUID is unique
 975                 if (in_array($item['network'], [NETWORK_DFRN, NETWORK_DIASPORA])) {
 976                         $condition = ['guid' => $item['guid'], 'uid' => $item['uid']];
 977                         if (dba::exists('item', $condition)) {
 978                                 logger('duplicated item with the same guid found. '.print_r($item,true));
 979                                 return 0;
 980                         }
 981                 } else {
 982                         // Check for an existing post with the same content. There seems to be a problem with OStatus.
 983                         $condition = ["`body` = ? AND `network` = ? AND `created` = ? AND `contact-id` = ? AND `uid` = ?",
 984                                         $item['body'], $item['network'], $item['created'], $item['contact-id'], $item['uid']];
 985                         if (dba::exists('item', $condition)) {
 986                                 logger('duplicated item with the same body found. '.print_r($item,true));
 987                                 return 0;
 988                         }
 989                 }
 990
 991                 // Is this item available in the global items (with uid=0)?
 992                 if ($item["uid"] == 0) {
 993                         $item["global"] = true;
 994
 995                         // Set the global flag on all items if this was a global item entry
 996                         dba::update('item', ['global' => true], ['uri' => $item["uri"]]);
 997                 } else {
 998                         $item["global"] = dba::exists('item', ['uid' => 0, 'uri' => $item["uri"]]);
 999                 }
1000
1001                 // ACL settings
1002                 if (strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid)) {
1003                         $private = 1;
1004                 } else {
1005                         $private = $item['private'];
1006                 }
1007
1008                 $item["allow_cid"] = $allow_cid;
1009                 $item["allow_gid"] = $allow_gid;
1010                 $item["deny_cid"] = $deny_cid;
1011                 $item["deny_gid"] = $deny_gid;
1012                 $item["private"] = $private;
1013                 $item["deleted"] = $parent_deleted;
1014
1015                 // Fill the cache field
1016                 put_item_in_cache($item);
1017
1018                 if ($notify) {
1019                         Addon::callHooks('post_local', $item);
1020                 } else {
1021                         Addon::callHooks('post_remote', $item);
1022                 }
1023
1024                 // This array field is used to trigger some automatic reactions
1025                 // It is mainly used in the "post_local" hook.
1026                 unset($item['api_source']);
1027
1028                 if (x($item, 'cancel')) {
1029                         logger('post cancelled by addon.');
1030                         return 0;
1031                 }
1032
1033                 /*
1034                  * Check for already added items.
1035                  * There is a timing issue here that sometimes creates double postings.
1036                  * An unique index would help - but the limitations of MySQL (maximum size of index values) prevent this.
1037                  */
1038                 if ($item["uid"] == 0) {
1039                         if (dba::exists('item', ['uri' => trim($item['uri']), 'uid' => 0])) {
1040                                 logger('Global item already stored. URI: '.$item['uri'].' on network '.$item['network'], LOGGER_DEBUG);
1041                                 return 0;
1042                         }
1043                 }
1044
1045                 logger('' . print_r($item,true), LOGGER_DATA);
1046
1047                 dba::transaction();
1048                 $ret = dba::insert('item', $item);
1049
1050                 // When the item was successfully stored we fetch the ID of the item.
1051                 if (DBM::is_result($ret)) {
1052                         $current_post = dba::lastInsertId();
1053                 } else {
1054                         // This can happen - for example - if there are locking timeouts.
1055                         dba::rollback();
1056
1057                         // Store the data into a spool file so that we can try again later.
1058
1059                         // At first we restore the Diaspora signature that we removed above.
1060                         if (isset($encoded_signature)) {
1061                                 $item['dsprsig'] = $encoded_signature;
1062                         }
1063
1064                         // Now we store the data in the spool directory
1065                         // We use "microtime" to keep the arrival order and "mt_rand" to avoid duplicates
1066                         $file = 'item-'.round(microtime(true) * 10000).'-'.mt_rand().'.msg';
1067
1068                         $spoolpath = get_spoolpath();
1069                         if ($spoolpath != "") {
1070                                 $spool = $spoolpath.'/'.$file;
1071                                 file_put_contents($spool, json_encode($item));
1072                                 logger("Item wasn't stored - Item was spooled into file ".$file, LOGGER_DEBUG);
1073                         }
1074                         return 0;
1075                 }
1076
1077                 if ($current_post == 0) {
1078                         // This is one of these error messages that never should occur.
1079                         logger("couldn't find created item - we better quit now.");
1080                         dba::rollback();
1081                         return 0;
1082                 }
1083
1084                 // How much entries have we created?
1085                 // We wouldn't need this query when we could use an unique index - but MySQL has length problems with them.
1086                 $entries = dba::count('item', ['uri' => $item['uri'], 'uid' => $item['uid'], 'network' => $item['network']]);
1087
1088                 if ($entries > 1) {
1089                         // There are duplicates. We delete our just created entry.
1090                         logger('Duplicated post occurred. uri = ' . $item['uri'] . ' uid = ' . $item['uid']);
1091
1092                         // Yes, we could do a rollback here - but we are having many users with MyISAM.
1093                         dba::delete('item', ['id' => $current_post]);
1094                         dba::commit();
1095                         return 0;
1096                 } elseif ($entries == 0) {
1097                         // This really should never happen since we quit earlier if there were problems.
1098                         logger("Something is terribly wrong. We haven't found our created entry.");
1099                         dba::rollback();
1100                         return 0;
1101                 }
1102
1103                 logger('created item '.$current_post);
1104                 self::updateContact($item);
1105
1106                 if (!$parent_id || ($item['parent-uri'] === $item['uri'])) {
1107                         $parent_id = $current_post;
1108                 }
1109
1110                 // Set parent id
1111                 dba::update('item', ['parent' => $parent_id], ['id' => $current_post]);
1112
1113                 $item['id'] = $current_post;
1114                 $item['parent'] = $parent_id;
1115
1116                 // update the commented timestamp on the parent
1117                 // Only update "commented" if it is really a comment
1118                 if (($item['verb'] == ACTIVITY_POST) || !Config::get("system", "like_no_comment")) {
1119                         dba::update('item', ['commented' => DateTimeFormat::utcNow(), 'changed' => DateTimeFormat::utcNow()], ['id' => $parent_id]);
1120                 } else {
1121                         dba::update('item', ['changed' => DateTimeFormat::utcNow()], ['id' => $parent_id]);
1122                 }
1123
1124                 if ($dsprsig) {
1125                         /*
1126                          * Friendica servers lower than 3.4.3-2 had double encoded the signature ...
1127                          * We can check for this condition when we decode and encode the stuff again.
1128                          */
1129                         if (base64_encode(base64_decode(base64_decode($dsprsig->signature))) == base64_decode($dsprsig->signature)) {
1130                                 $dsprsig->signature = base64_decode($dsprsig->signature);
1131                                 logger("Repaired double encoded signature from handle ".$dsprsig->signer, LOGGER_DEBUG);
1132                         }
1133
1134                         dba::insert('sign', ['iid' => $current_post, 'signed_text' => $dsprsig->signed_text,
1135                                                 'signature' => $dsprsig->signature, 'signer' => $dsprsig->signer]);
1136                 }
1137
1138                 if (!empty($diaspora_signed_text)) {
1139                         // Formerly we stored the signed text, the signature and the author in different fields.
1140                         // We now store the raw data so that we are more flexible.
1141                         dba::insert('sign', ['iid' => $current_post, 'signed_text' => $diaspora_signed_text]);
1142                 }
1143
1144                 $deleted = self::tagDeliver($item['uid'], $current_post);
1145
1146                 /*
1147                  * current post can be deleted if is for a community page and no mention are
1148                  * in it.
1149                  */
1150                 if (!$deleted && !$dontcache) {
1151                         $posted_item = dba::selectFirst('item', [], ['id' => $current_post]);
1152                         if (DBM::is_result($posted_item)) {
1153                                 if ($notify) {
1154                                         Addon::callHooks('post_local_end', $posted_item);
1155                                 } else {
1156                                         Addon::callHooks('post_remote_end', $posted_item);
1157                                 }
1158                         } else {
1159                                 logger('new item not found in DB, id ' . $current_post);
1160                         }
1161                 }
1162
1163                 if ($item['parent-uri'] === $item['uri']) {
1164                         self::addThread($current_post);
1165                 } else {
1166                         self::updateThread($parent_id);
1167                 }
1168
1169                 dba::commit();
1170
1171                 /*
1172                  * Due to deadlock issues with the "term" table we are doing these steps after the commit.
1173                  * This is not perfect - but a workable solution until we found the reason for the problem.
1174                  */
1175                 Term::insertFromTagFieldByItemId($current_post);
1176                 Term::insertFromFileFieldByItemId($current_post);
1177
1178                 if ($item['parent-uri'] === $item['uri']) {
1179                         self::addShadow($current_post);
1180                 } else {
1181                         self::addShadowPost($current_post);
1182                 }
1183
1184                 check_user_notification($current_post);
1185
1186                 if ($notify) {
1187                         Worker::add(['priority' => $priority, 'dont_fork' => true], "Notifier", $notify_type, $current_post);
1188                 } elseif (!empty($parent) && $parent['origin']) {
1189                         Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], "Notifier", "comment-import", $current_post);
1190                 }
1191
1192                 return $current_post;
1193         }
1194
1195         /**
1196          * @brief Distributes public items to the receivers
1197          *
1198          * @param integer $itemid      Item ID that should be added
1199          * @param string  $signed_text Original text (for Diaspora signatures), JSON encoded.
1200          */
1201         public static function distribute($itemid, $signed_text = '')
1202         {
1203                 $condition = ["`id` IN (SELECT `parent` FROM `item` WHERE `id` = ?)", $itemid];
1204                 $parent = dba::selectFirst('item', ['owner-id'], $condition);
1205                 if (!DBM::is_result($parent)) {
1206                         return;
1207                 }
1208
1209                 // Only distribute public items from native networks
1210                 $condition = ['id' => $itemid, 'uid' => 0,
1211                         'network' => [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""],
1212                         'visible' => true, 'deleted' => false, 'moderated' => false, 'private' => false];
1213                 $item = dba::selectFirst('item', [], ['id' => $itemid]);
1214                 if (!DBM::is_result($item)) {
1215                         return;
1216                 }
1217
1218                 unset($item['id']);
1219                 unset($item['parent']);
1220                 unset($item['mention']);
1221                 unset($item['wall']);
1222                 unset($item['origin']);
1223                 unset($item['starred']);
1224                 unset($item['rendered-hash']);
1225                 unset($item['rendered-html']);
1226
1227                 $users = [];
1228
1229                 $condition = ["`nurl` IN (SELECT `nurl` FROM `contact` WHERE `id` = ?) AND `uid` != 0 AND NOT `blocked` AND `rel` IN (?, ?)",
1230                         $parent['owner-id'], CONTACT_IS_SHARING,  CONTACT_IS_FRIEND];
1231                 $contacts = dba::select('contact', ['uid'], $condition);
1232                 while ($contact = dba::fetch($contacts)) {
1233                         $users[$contact['uid']] = $contact['uid'];
1234                 }
1235
1236                 $origin_uid = 0;
1237
1238                 if ($item['uri'] != $item['parent-uri']) {
1239                         $parents = dba::select('item', ['uid', 'origin'], ["`uri` = ? AND `uid` != 0", $item['parent-uri']]);
1240                         while ($parent = dba::fetch($parents)) {
1241                                 $users[$parent['uid']] = $parent['uid'];
1242                                 if ($parent['origin'] && !$item['origin']) {
1243                                         $origin_uid = $parent['uid'];
1244                                 }
1245                         }
1246                 }
1247
1248                 foreach ($users as $uid) {
1249                         if ($origin_uid == $uid) {
1250                                 $item['diaspora_signed_text'] = $signed_text;
1251                         }
1252                         self::storeForUser($itemid, $item, $uid);
1253                 }
1254         }
1255
1256         /**
1257          * @brief Store public items for the receivers
1258          *
1259          * @param integer $itemid Item ID that should be added
1260          * @param array   $item   The item entry that will be stored
1261          * @param integer $uid    The user that will receive the item entry
1262          */
1263         private static function storeForUser($itemid, $item, $uid)
1264         {
1265                 $item['uid'] = $uid;
1266                 $item['origin'] = 0;
1267                 $item['wall'] = 0;
1268                 if ($item['uri'] == $item['parent-uri']) {
1269                         $item['contact-id'] = Contact::getIdForURL($item['owner-link'], $uid);
1270                 } else {
1271                         $item['contact-id'] = Contact::getIdForURL($item['author-link'], $uid);
1272                 }
1273
1274                 if (empty($item['contact-id'])) {
1275                         $self = dba::selectFirst('contact', ['id'], ['self' => true, 'uid' => $uid]);
1276                         if (!DBM::is_result($self)) {
1277                                 return;
1278                         }
1279                         $item['contact-id'] = $self['id'];
1280                 }
1281
1282                 if (in_array($item['type'], ["net-comment", "wall-comment"])) {
1283                         $item['type'] = 'remote-comment';
1284                 } elseif ($item['type'] == 'wall') {
1285                         $item['type'] = 'remote';
1286                 }
1287
1288                 /// @todo Handling of "event-id"
1289
1290                 $notify = false;
1291                 if ($item['uri'] == $item['parent-uri']) {
1292                         $contact = dba::selectFirst('contact', [], ['id' => $item['contact-id'], 'self' => false]);
1293                         if (DBM::is_result($contact)) {
1294                                 $notify = self::isRemoteSelf($contact, $item);
1295                         }
1296                 }
1297
1298                 $distributed = self::insert($item, false, $notify, true);
1299
1300                 if (!$distributed) {
1301                         logger("Distributed public item " . $itemid . " for user " . $uid . " wasn't stored", LOGGER_DEBUG);
1302                 } else {
1303                         logger("Distributed public item " . $itemid . " for user " . $uid . " with id " . $distributed, LOGGER_DEBUG);
1304                 }
1305         }
1306
1307         /**
1308          * @brief Add a shadow entry for a given item id that is a thread starter
1309          *
1310          * We store every public item entry additionally with the user id "0".
1311          * This is used for the community page and for the search.
1312          * It is planned that in the future we will store public item entries only once.
1313          *
1314          * @param integer $itemid Item ID that should be added
1315          */
1316         public static function addShadow($itemid)
1317         {
1318                 $fields = ['uid', 'private', 'moderated', 'visible', 'deleted', 'network'];
1319                 $condition = ['id' => $itemid, 'parent' => [0, $itemid]];
1320                 $item = dba::selectFirst('item', $fields, $condition);
1321
1322                 if (!DBM::is_result($item)) {
1323                         return;
1324                 }
1325
1326                 // is it already a copy?
1327                 if (($itemid == 0) || ($item['uid'] == 0)) {
1328                         return;
1329                 }
1330
1331                 // Is it a visible public post?
1332                 if (!$item["visible"] || $item["deleted"] || $item["moderated"] || $item["private"]) {
1333                         return;
1334                 }
1335
1336                 // is it an entry from a connector? Only add an entry for natively connected networks
1337                 if (!in_array($item["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""])) {
1338                         return;
1339                 }
1340
1341                 $item = dba::selectFirst('item', [], ['id' => $itemid]);
1342
1343                 if (DBM::is_result($item) && ($item["allow_cid"] == '') && ($item["allow_gid"] == '') &&
1344                         ($item["deny_cid"] == '') && ($item["deny_gid"] == '')) {
1345
1346                         if (!dba::exists('item', ['uri' => $item['uri'], 'uid' => 0])) {
1347                                 // Preparing public shadow (removing user specific data)
1348                                 $item['uid'] = 0;
1349                                 unset($item['id']);
1350                                 unset($item['parent']);
1351                                 unset($item['wall']);
1352                                 unset($item['mention']);
1353                                 unset($item['origin']);
1354                                 unset($item['starred']);
1355                                 unset($item['rendered-hash']);
1356                                 unset($item['rendered-html']);
1357                                 if ($item['uri'] == $item['parent-uri']) {
1358                                         $item['contact-id'] = Contact::getIdForURL($item['owner-link']);
1359                                 } else {
1360                                         $item['contact-id'] = Contact::getIdForURL($item['author-link']);
1361                                 }
1362
1363                                 if (in_array($item['type'], ["net-comment", "wall-comment"])) {
1364                                         $item['type'] = 'remote-comment';
1365                                 } elseif ($item['type'] == 'wall') {
1366                                         $item['type'] = 'remote';
1367                                 }
1368
1369                                 $public_shadow = self::insert($item, false, false, true);
1370
1371                                 logger("Stored public shadow for thread ".$itemid." under id ".$public_shadow, LOGGER_DEBUG);
1372                         }
1373                 }
1374         }
1375
1376         /**
1377          * @brief Add a shadow entry for a given item id that is a comment
1378          *
1379          * This function does the same like the function above - but for comments
1380          *
1381          * @param integer $itemid Item ID that should be added
1382          */
1383         public static function addShadowPost($itemid)
1384         {
1385                 $item = dba::selectFirst('item', [], ['id' => $itemid]);
1386                 if (!DBM::is_result($item)) {
1387                         return;
1388                 }
1389
1390                 // Is it a toplevel post?
1391                 if ($item['id'] == $item['parent']) {
1392                         self::addShadow($itemid);
1393                         return;
1394                 }
1395
1396                 // Is this a shadow entry?
1397                 if ($item['uid'] == 0) {
1398                         return;
1399                 }
1400
1401                 // Is there a shadow parent?
1402                 if (!dba::exists('item', ['uri' => $item['parent-uri'], 'uid' => 0])) {
1403                         return;
1404                 }
1405
1406                 // Is there already a shadow entry?
1407                 if (dba::exists('item', ['uri' => $item['uri'], 'uid' => 0])) {
1408                         return;
1409                 }
1410
1411                 // Save "origin" and "parent" state
1412                 $origin = $item['origin'];
1413                 $parent = $item['parent'];
1414
1415                 // Preparing public shadow (removing user specific data)
1416                 $item['uid'] = 0;
1417                 unset($item['id']);
1418                 unset($item['parent']);
1419                 unset($item['wall']);
1420                 unset($item['mention']);
1421                 unset($item['origin']);
1422                 unset($item['starred']);
1423                 unset($item['rendered-hash']);
1424                 unset($item['rendered-html']);
1425                 $item['contact-id'] = Contact::getIdForURL($item['author-link']);
1426
1427                 if (in_array($item['type'], ["net-comment", "wall-comment"])) {
1428                         $item['type'] = 'remote-comment';
1429                 } elseif ($item['type'] == 'wall') {
1430                         $item['type'] = 'remote';
1431                 }
1432
1433                 $public_shadow = self::insert($item, false, false, true);
1434
1435                 logger("Stored public shadow for comment ".$item['uri']." under id ".$public_shadow, LOGGER_DEBUG);
1436
1437                 // If this was a comment to a Diaspora post we don't get our comment back.
1438                 // This means that we have to distribute the comment by ourselves.
1439                 if ($origin && dba::exists('item', ['id' => $parent, 'network' => NETWORK_DIASPORA])) {
1440                         self::distribute($public_shadow);
1441                 }
1442         }
1443
1444          /**
1445          * Adds a "lang" specification in a "postopts" element of given $arr,
1446          * if possible and not already present.
1447          * Expects "body" element to exist in $arr.
1448          */
1449         private static function addLanguageInPostopts(&$item)
1450         {
1451                 $postopts = "";
1452
1453                 if (!empty($item['postopts'])) {
1454                         if (strstr($item['postopts'], 'lang=')) {
1455                                 // do not override
1456                                 return;
1457                         }
1458                         $postopts = $item['postopts'];
1459                 }
1460
1461                 $naked_body = Text\BBCode::toPlaintext($item['body'], false);
1462
1463                 $languages = (new Text_LanguageDetect())->detect($naked_body, 3);
1464
1465                 if (sizeof($languages) > 0) {
1466                         if ($postopts != '') {
1467                                 $postopts .= '&'; // arbitrary separator, to be reviewed
1468                         }
1469
1470                         $postopts .= 'lang=';
1471                         $sep = "";
1472
1473                         foreach ($languages as $language => $score) {
1474                                 $postopts .= $sep . $language . ";" . $score;
1475                                 $sep = ':';
1476                         }
1477                         $item['postopts'] = $postopts;
1478                 }
1479         }
1480
1481         /**
1482          * @brief Creates an unique guid out of a given uri
1483          *
1484          * @param string $uri uri of an item entry
1485          * @param string $host hostname for the GUID prefix
1486          * @return string unique guid
1487          */
1488         public static function guidFromUri($uri, $host)
1489         {
1490                 // Our regular guid routine is using this kind of prefix as well
1491                 // We have to avoid that different routines could accidentally create the same value
1492                 $parsed = parse_url($uri);
1493
1494                 // We use a hash of the hostname as prefix for the guid
1495                 $guid_prefix = hash("crc32", $host);
1496
1497                 // Remove the scheme to make sure that "https" and "http" doesn't make a difference
1498                 unset($parsed["scheme"]);
1499
1500                 // Glue it together to be able to make a hash from it
1501                 $host_id = implode("/", $parsed);
1502
1503                 // We could use any hash algorithm since it isn't a security issue
1504                 $host_hash = hash("ripemd128", $host_id);
1505
1506                 return $guid_prefix.$host_hash;
1507         }
1508
1509         /**
1510          * @brief Set "success_update" and "last-item" to the date of the last time we heard from this contact
1511          *
1512          * This can be used to filter for inactive contacts.
1513          * Only do this for public postings to avoid privacy problems, since poco data is public.
1514          * Don't set this value if it isn't from the owner (could be an author that we don't know)
1515          *
1516          * @param array $arr Contains the just posted item record
1517          */
1518         private static function updateContact($arr)
1519         {
1520                 // Unarchive the author
1521                 $contact = dba::selectFirst('contact', [], ['id' => $arr["author-id"]]);
1522                 if (DBM::is_result($contact)) {
1523                         Contact::unmarkForArchival($contact);
1524                 }
1525
1526                 // Unarchive the contact if it's not our own contact
1527                 $contact = dba::selectFirst('contact', [], ['id' => $arr["contact-id"], 'self' => false]);
1528                 if (DBM::is_result($contact)) {
1529                         Contact::unmarkForArchival($contact);
1530                 }
1531
1532                 $update = (!$arr['private'] && (($arr["author-link"] === $arr["owner-link"]) || ($arr["parent-uri"] === $arr["uri"])));
1533
1534                 // Is it a forum? Then we don't care about the rules from above
1535                 if (!$update && ($arr["network"] == NETWORK_DFRN) && ($arr["parent-uri"] === $arr["uri"])) {
1536                         if (dba::exists('contact', ['id' => $arr['contact-id'], 'forum' => true])) {
1537                                 $update = true;
1538                         }
1539                 }
1540
1541                 if ($update) {
1542                         dba::update('contact', ['success_update' => $arr['received'], 'last-item' => $arr['received']],
1543                                 ['id' => $arr['contact-id']]);
1544                 }
1545                 // Now do the same for the system wide contacts with uid=0
1546                 if (!$arr['private']) {
1547                         dba::update('contact', ['success_update' => $arr['received'], 'last-item' => $arr['received']],
1548                                 ['id' => $arr['owner-id']]);
1549
1550                         if ($arr['owner-id'] != $arr['author-id']) {
1551                                 dba::update('contact', ['success_update' => $arr['received'], 'last-item' => $arr['received']],
1552                                         ['id' => $arr['author-id']]);
1553                         }
1554                 }
1555         }
1556
1557         public static function setHashtags(&$item)
1558         {
1559
1560                 $tags = get_tags($item["body"]);
1561
1562                 // No hashtags?
1563                 if (!count($tags)) {
1564                         return false;
1565                 }
1566
1567                 // This sorting is important when there are hashtags that are part of other hashtags
1568                 // Otherwise there could be problems with hashtags like #test and #test2
1569                 rsort($tags);
1570
1571                 $URLSearchString = "^\[\]";
1572
1573                 // All hashtags should point to the home server if "local_tags" is activated
1574                 if (Config::get('system', 'local_tags')) {
1575                         $item["body"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1576                                         "#[url=".System::baseUrl()."/search?tag=$2]$2[/url]", $item["body"]);
1577
1578                         $item["tag"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1579                                         "#[url=".System::baseUrl()."/search?tag=$2]$2[/url]", $item["tag"]);
1580                 }
1581
1582                 // mask hashtags inside of url, bookmarks and attachments to avoid urls in urls
1583                 $item["body"] = preg_replace_callback("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1584                         function ($match) {
1585                                 return ("[url=" . str_replace("#", "&num;", $match[1]) . "]" . str_replace("#", "&num;", $match[2]) . "[/url]");
1586                         }, $item["body"]);
1587
1588                 $item["body"] = preg_replace_callback("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism",
1589                         function ($match) {
1590                                 return ("[bookmark=" . str_replace("#", "&num;", $match[1]) . "]" . str_replace("#", "&num;", $match[2]) . "[/bookmark]");
1591                         }, $item["body"]);
1592
1593                 $item["body"] = preg_replace_callback("/\[attachment (.*)\](.*?)\[\/attachment\]/ism",
1594                         function ($match) {
1595                                 return ("[attachment " . str_replace("#", "&num;", $match[1]) . "]" . $match[2] . "[/attachment]");
1596                         }, $item["body"]);
1597
1598                 // Repair recursive urls
1599                 $item["body"] = preg_replace("/&num;\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1600                                 "&num;$2", $item["body"]);
1601
1602                 foreach ($tags as $tag) {
1603                         if ((strpos($tag, '#') !== 0) || strpos($tag, '[url=')) {
1604                                 continue;
1605                         }
1606
1607                         $basetag = str_replace('_',' ',substr($tag,1));
1608
1609                         $newtag = '#[url=' . System::baseUrl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]';
1610
1611                         $item["body"] = str_replace($tag, $newtag, $item["body"]);
1612
1613                         if (!stristr($item["tag"], "/search?tag=" . $basetag . "]" . $basetag . "[/url]")) {
1614                                 if (strlen($item["tag"])) {
1615                                         $item["tag"] = ','.$item["tag"];
1616                                 }
1617                                 $item["tag"] = $newtag.$item["tag"];
1618                         }
1619                 }
1620
1621                 // Convert back the masked hashtags
1622                 $item["body"] = str_replace("&num;", "#", $item["body"]);
1623         }
1624
1625         public static function getGuidById($id)
1626         {
1627                 $item = dba::selectFirst('item', ['guid'], ['id' => $id]);
1628                 if (DBM::is_result($item)) {
1629                         return $item['guid'];
1630                 } else {
1631                         return '';
1632                 }
1633         }
1634
1635         public static function getIdAndNickByGuid($guid, $uid = 0)
1636         {
1637                 $nick = "";
1638                 $id = 0;
1639
1640                 if ($uid == 0) {
1641                         $uid == local_user();
1642                 }
1643
1644                 // Does the given user have this item?
1645                 if ($uid) {
1646                         $item = dba::fetch_first("SELECT `item`.`id`, `user`.`nickname` FROM `item`
1647                                 INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1648                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
1649                                         AND `item`.`guid` = ? AND `item`.`uid` = ?", $guid, $uid);
1650                         if (DBM::is_result($item)) {
1651                                 $id = $item["id"];
1652                                 $nick = $item["nickname"];
1653                         }
1654                 }
1655
1656                 // Or is it anywhere on the server?
1657                 if ($nick == "") {
1658                         $item = dba::fetch_first("SELECT `item`.`id`, `user`.`nickname` FROM `item`
1659                                 INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1660                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
1661                                         AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
1662                                         AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
1663                                         AND NOT `item`.`private` AND `item`.`wall`
1664                                         AND `item`.`guid` = ?", $guid);
1665                         if (DBM::is_result($item)) {
1666                                 $id = $item["id"];
1667                                 $nick = $item["nickname"];
1668                         }
1669                 }
1670                 return ["nick" => $nick, "id" => $id];
1671         }
1672
1673         /**
1674          * look for mention tags and setup a second delivery chain for forum/community posts if appropriate
1675          * @param int $uid
1676          * @param int $item_id
1677          * @return bool true if item was deleted, else false
1678          */
1679         private static function tagDeliver($uid, $item_id)
1680         {
1681                 $mention = false;
1682
1683                 $user = dba::selectFirst('user', [], ['uid' => $uid]);
1684                 if (!DBM::is_result($user)) {
1685                         return;
1686                 }
1687
1688                 $community_page = (($user['page-flags'] == PAGE_COMMUNITY) ? true : false);
1689                 $prvgroup = (($user['page-flags'] == PAGE_PRVGROUP) ? true : false);
1690
1691                 $item = dba::selectFirst('item', [], ['id' => $item_id]);
1692                 if (!DBM::is_result($item)) {
1693                         return;
1694                 }
1695
1696                 $link = normalise_link(System::baseUrl() . '/profile/' . $user['nickname']);
1697
1698                 /*
1699                  * Diaspora uses their own hardwired link URL in @-tags
1700                  * instead of the one we supply with webfinger
1701                  */
1702                 $dlink = normalise_link(System::baseUrl() . '/u/' . $user['nickname']);
1703
1704                 $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism', $item['body'], $matches, PREG_SET_ORDER);
1705                 if ($cnt) {
1706                         foreach ($matches as $mtch) {
1707                                 if (link_compare($link, $mtch[1]) || link_compare($dlink, $mtch[1])) {
1708                                         $mention = true;
1709                                         logger('mention found: ' . $mtch[2]);
1710                                 }
1711                         }
1712                 }
1713
1714                 if (!$mention) {
1715                         if (($community_page || $prvgroup) &&
1716                                   !$item['wall'] && !$item['origin'] && ($item['id'] == $item['parent'])) {
1717                                 // mmh.. no mention.. community page or private group... no wall.. no origin.. top-post (not a comment)
1718                                 // delete it!
1719                                 logger("no-mention top-level post to community or private group. delete.");
1720                                 dba::delete('item', ['id' => $item_id]);
1721                                 return true;
1722                         }
1723                         return;
1724                 }
1725
1726                 $arr = ['item' => $item, 'user' => $user];
1727
1728                 Addon::callHooks('tagged', $arr);
1729
1730                 if (!$community_page && !$prvgroup) {
1731                         return;
1732                 }
1733
1734                 /*
1735                  * tgroup delivery - setup a second delivery chain
1736                  * prevent delivery looping - only proceed
1737                  * if the message originated elsewhere and is a top-level post
1738                  */
1739                 if ($item['wall'] || $item['origin'] || ($item['id'] != $item['parent'])) {
1740                         return;
1741                 }
1742
1743                 // now change this copy of the post to a forum head message and deliver to all the tgroup members
1744                 $self = dba::selectFirst('contact', ['id', 'name', 'url', 'thumb'], ['uid' => $uid, 'self' => true]);
1745                 if (!DBM::is_result($self)) {
1746                         return;
1747                 }
1748
1749                 $owner_id = Contact::getIdForURL($self['url']);
1750
1751                 // also reset all the privacy bits to the forum default permissions
1752
1753                 $private = ($user['allow_cid'] || $user['allow_gid'] || $user['deny_cid'] || $user['deny_gid']) ? 1 : 0;
1754
1755                 $forum_mode = ($prvgroup ? 2 : 1);
1756
1757                 $fields = ['wall' => true, 'origin' => true, 'forum_mode' => $forum_mode, 'contact-id' => $self['id'],
1758                         'owner-id' => $owner_id, 'owner-link' => $self['url'], 'private' => $private, 'allow_cid' => $user['allow_cid'],
1759                         'allow_gid' => $user['allow_gid'], 'deny_cid' => $user['deny_cid'], 'deny_gid' => $user['deny_gid']];
1760                 dba::update('item', $fields, ['id' => $item_id]);
1761
1762                 self::updateThread($item_id);
1763
1764                 Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], 'Notifier', 'tgroup', $item_id);
1765         }
1766
1767         public static function isRemoteSelf($contact, &$datarray)
1768         {
1769                 $a = get_app();
1770
1771                 if (!$contact['remote_self']) {
1772                         return false;
1773                 }
1774
1775                 // Prevent the forwarding of posts that are forwarded
1776                 if ($datarray["extid"] == NETWORK_DFRN) {
1777                         logger('Already forwarded', LOGGER_DEBUG);
1778                         return false;
1779                 }
1780
1781                 // Prevent to forward already forwarded posts
1782                 if ($datarray["app"] == $a->get_hostname()) {
1783                         logger('Already forwarded (second test)', LOGGER_DEBUG);
1784                         return false;
1785                 }
1786
1787                 // Only forward posts
1788                 if ($datarray["verb"] != ACTIVITY_POST) {
1789                         logger('No post', LOGGER_DEBUG);
1790                         return false;
1791                 }
1792
1793                 if (($contact['network'] != NETWORK_FEED) && $datarray['private']) {
1794                         logger('Not public', LOGGER_DEBUG);
1795                         return false;
1796                 }
1797
1798                 $datarray2 = $datarray;
1799                 logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
1800                 if ($contact['remote_self'] == 2) {
1801                         $self = dba::selectFirst('contact', ['id', 'name', 'url', 'thumb'],
1802                                         ['uid' => $contact['uid'], 'self' => true]);
1803                         if (DBM::is_result($self)) {
1804                                 $datarray['contact-id'] = $self["id"];
1805
1806                                 $datarray['owner-name'] = $self["name"];
1807                                 $datarray['owner-link'] = $self["url"];
1808                                 $datarray['owner-avatar'] = $self["thumb"];
1809
1810                                 $datarray['author-name']   = $datarray['owner-name'];
1811                                 $datarray['author-link']   = $datarray['owner-link'];
1812                                 $datarray['author-avatar'] = $datarray['owner-avatar'];
1813
1814                                 unset($datarray['created']);
1815                                 unset($datarray['edited']);
1816
1817                                 unset($datarray['network']);
1818                                 unset($datarray['owner-id']);
1819                                 unset($datarray['author-id']);
1820                         }
1821
1822                         if ($contact['network'] != NETWORK_FEED) {
1823                                 $datarray["guid"] = get_guid(32);
1824                                 unset($datarray["plink"]);
1825                                 $datarray["uri"] = item_new_uri($a->get_hostname(), $contact['uid'], $datarray["guid"]);
1826                                 $datarray["parent-uri"] = $datarray["uri"];
1827                                 $datarray["thr-parent"] = $datarray["uri"];
1828                                 $datarray["extid"] = NETWORK_DFRN;
1829                                 $urlpart = parse_url($datarray2['author-link']);
1830                                 $datarray["app"] = $urlpart["host"];
1831                         } else {
1832                                 $datarray['private'] = 0;
1833                         }
1834                 }
1835
1836                 if ($contact['network'] != NETWORK_FEED) {
1837                         // Store the original post
1838                         $result = self::insert($datarray2, false, false);
1839                         logger('remote-self post original item - Contact '.$contact['url'].' return '.$result.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
1840                 } else {
1841                         $datarray["app"] = "Feed";
1842                         $result = true;
1843                 }
1844
1845                 // Trigger automatic reactions for addons
1846                 $datarray['api_source'] = true;
1847
1848                 // We have to tell the hooks who we are - this really should be improved
1849                 $_SESSION["authenticated"] = true;
1850                 $_SESSION["uid"] = $contact['uid'];
1851
1852                 return $result;
1853         }
1854
1855         /**
1856          *
1857          * @param string $s
1858          * @param int    $uid
1859          * @param array  $item
1860          * @param int    $cid
1861          * @return string
1862          */
1863         public static function fixPrivatePhotos($s, $uid, $item = null, $cid = 0)
1864         {
1865                 if (Config::get('system', 'disable_embedded')) {
1866                         return $s;
1867                 }
1868
1869                 logger('check for photos', LOGGER_DEBUG);
1870                 $site = substr(System::baseUrl(), strpos(System::baseUrl(), '://'));
1871
1872                 $orig_body = $s;
1873                 $new_body = '';
1874
1875                 $img_start = strpos($orig_body, '[img');
1876                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
1877                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
1878
1879                 while (($img_st_close !== false) && ($img_len !== false)) {
1880                         $img_st_close++; // make it point to AFTER the closing bracket
1881                         $image = substr($orig_body, $img_start + $img_st_close, $img_len);
1882
1883                         logger('found photo ' . $image, LOGGER_DEBUG);
1884
1885                         if (stristr($image, $site . '/photo/')) {
1886                                 // Only embed locally hosted photos
1887                                 $replace = false;
1888                                 $i = basename($image);
1889                                 $i = str_replace(['.jpg', '.png', '.gif'], ['', '', ''], $i);
1890                                 $x = strpos($i, '-');
1891
1892                                 if ($x) {
1893                                         $res = substr($i, $x + 1);
1894                                         $i = substr($i, 0, $x);
1895                                         $fields = ['data', 'type', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid'];
1896                                         $photo = dba::selectFirst('photo', $fields, ['resource-id' => $i, 'scale' => $res, 'uid' => $uid]);
1897                                         if (DBM::is_result($photo)) {
1898                                                 /*
1899                                                  * Check to see if we should replace this photo link with an embedded image
1900                                                  * 1. No need to do so if the photo is public
1901                                                  * 2. If there's a contact-id provided, see if they're in the access list
1902                                                  *    for the photo. If so, embed it.
1903                                                  * 3. Otherwise, if we have an item, see if the item permissions match the photo
1904                                                  *    permissions, regardless of order but first check to see if they're an exact
1905                                                  *    match to save some processing overhead.
1906                                                  */
1907                                                 if (self::hasPermissions($photo)) {
1908                                                         if ($cid) {
1909                                                                 $recips = self::enumeratePermissions($photo);
1910                                                                 if (in_array($cid, $recips)) {
1911                                                                         $replace = true;
1912                                                                 }
1913                                                         } elseif ($item) {
1914                                                                 if (self::samePermissions($item, $photo)) {
1915                                                                         $replace = true;
1916                                                                 }
1917                                                         }
1918                                                 }
1919                                                 if ($replace) {
1920                                                         $data = $photo['data'];
1921                                                         $type = $photo['type'];
1922
1923                                                         // If a custom width and height were specified, apply before embedding
1924                                                         if (preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
1925                                                                 logger('scaling photo', LOGGER_DEBUG);
1926
1927                                                                 $width = intval($match[1]);
1928                                                                 $height = intval($match[2]);
1929
1930                                                                 $Image = new Image($data, $type);
1931                                                                 if ($Image->isValid()) {
1932                                                                         $Image->scaleDown(max($width, $height));
1933                                                                         $data = $Image->asString();
1934                                                                         $type = $Image->getType();
1935                                                                 }
1936                                                         }
1937
1938                                                         logger('replacing photo', LOGGER_DEBUG);
1939                                                         $image = 'data:' . $type . ';base64,' . base64_encode($data);
1940                                                         logger('replaced: ' . $image, LOGGER_DATA);
1941                                                 }
1942                                         }
1943                                 }
1944                         }
1945
1946                         $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
1947                         $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
1948                         if ($orig_body === false) {
1949                                 $orig_body = '';
1950                         }
1951
1952                         $img_start = strpos($orig_body, '[img');
1953                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
1954                         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
1955                 }
1956
1957                 $new_body = $new_body . $orig_body;
1958
1959                 return $new_body;
1960         }
1961
1962         private static function hasPermissions($obj)
1963         {
1964                 return (
1965                         (
1966                                 x($obj, 'allow_cid')
1967                         ) || (
1968                                 x($obj, 'allow_gid')
1969                         ) || (
1970                                 x($obj, 'deny_cid')
1971                         ) || (
1972                                 x($obj, 'deny_gid')
1973                         )
1974                 );
1975         }
1976
1977         private static function samePermissions($obj1, $obj2)
1978         {
1979                 // first part is easy. Check that these are exactly the same.
1980                 if (($obj1['allow_cid'] == $obj2['allow_cid'])
1981                         && ($obj1['allow_gid'] == $obj2['allow_gid'])
1982                         && ($obj1['deny_cid'] == $obj2['deny_cid'])
1983                         && ($obj1['deny_gid'] == $obj2['deny_gid'])) {
1984                         return true;
1985                 }
1986
1987                 // This is harder. Parse all the permissions and compare the resulting set.
1988                 $recipients1 = self::enumeratePermissions($obj1);
1989                 $recipients2 = self::enumeratePermissions($obj2);
1990                 sort($recipients1);
1991                 sort($recipients2);
1992
1993                 /// @TODO Comparison of arrays, maybe use array_diff_assoc() here?
1994                 return ($recipients1 == $recipients2);
1995         }
1996
1997         // returns an array of contact-ids that are allowed to see this object
1998         private static function enumeratePermissions($obj)
1999         {
2000                 $allow_people = expand_acl($obj['allow_cid']);
2001                 $allow_groups = Group::expand(expand_acl($obj['allow_gid']));
2002                 $deny_people  = expand_acl($obj['deny_cid']);
2003                 $deny_groups  = Group::expand(expand_acl($obj['deny_gid']));
2004                 $recipients   = array_unique(array_merge($allow_people, $allow_groups));
2005                 $deny         = array_unique(array_merge($deny_people, $deny_groups));
2006                 $recipients   = array_diff($recipients, $deny);
2007                 return $recipients;
2008         }
2009
2010         public static function getFeedTags($item)
2011         {
2012                 $ret = [];
2013                 $matches = false;
2014                 $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|', $item['tag'], $matches);
2015                 if ($cnt) {
2016                         for ($x = 0; $x < $cnt; $x ++) {
2017                                 if ($matches[1][$x]) {
2018                                         $ret[$matches[2][$x]] = ['#', $matches[1][$x], $matches[2][$x]];
2019                                 }
2020                         }
2021                 }
2022                 $matches = false;
2023                 $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|', $item['tag'], $matches);
2024                 if ($cnt) {
2025                         for ($x = 0; $x < $cnt; $x ++) {
2026                                 if ($matches[1][$x]) {
2027                                         $ret[] = ['@', $matches[1][$x], $matches[2][$x]];
2028                                 }
2029                         }
2030                 }
2031                 return $ret;
2032         }
2033
2034         public static function expire($uid, $days, $network = "", $force = false)
2035         {
2036                 if (!$uid || ($days < 1)) {
2037                         return;
2038                 }
2039
2040                 /*
2041                  * $expire_network_only = save your own wall posts
2042                  * and just expire conversations started by others
2043                  */
2044                 $expire_network_only = PConfig::get($uid,'expire', 'network_only');
2045                 $sql_extra = (intval($expire_network_only) ? " AND wall = 0 " : "");
2046
2047                 if ($network != "") {
2048                         $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
2049
2050                         /*
2051                          * There is an index "uid_network_received" but not "uid_network_created"
2052                          * This avoids the creation of another index just for one purpose.
2053                          * And it doesn't really matter wether to look at "received" or "created"
2054                          */
2055                         $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
2056                 } else {
2057                         $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
2058                 }
2059
2060                 $r = q("SELECT `file`, `resource-id`, `starred`, `type`, `id` FROM `item`
2061                         WHERE `uid` = %d $range
2062                         AND `id` = `parent`
2063                         $sql_extra
2064                         AND `deleted` = 0",
2065                         intval($uid),
2066                         intval($days)
2067                 );
2068
2069                 if (!DBM::is_result($r)) {
2070                         return;
2071                 }
2072
2073                 $expire_items = PConfig::get($uid, 'expire', 'items', 1);
2074
2075                 // Forcing expiring of items - but not notes and marked items
2076                 if ($force) {
2077                         $expire_items = true;
2078                 }
2079
2080                 $expire_notes = PConfig::get($uid, 'expire', 'notes', 1);
2081                 $expire_starred = PConfig::get($uid, 'expire', 'starred', 1);
2082                 $expire_photos = PConfig::get($uid, 'expire', 'photos', 0);
2083
2084                 logger('User '.$uid.': expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
2085
2086                 foreach ($r as $item) {
2087
2088                         // don't expire filed items
2089
2090                         if (strpos($item['file'],'[') !== false) {
2091                                 continue;
2092                         }
2093
2094                         // Only expire posts, not photos and photo comments
2095
2096                         if ($expire_photos == 0 && strlen($item['resource-id'])) {
2097                                 continue;
2098                         } elseif ($expire_starred == 0 && intval($item['starred'])) {
2099                                 continue;
2100                         } elseif ($expire_notes == 0 && $item['type'] == 'note') {
2101                                 continue;
2102                         } elseif ($expire_items == 0 && $item['type'] != 'note') {
2103                                 continue;
2104                         }
2105
2106                         self::deleteById($item['id'], PRIORITY_LOW);
2107                 }
2108         }
2109
2110         public static function firstPostDate($uid, $wall = false)
2111         {
2112                 $condition = ['uid' => $uid, 'wall' => $wall, 'deleted' => false, 'visible' => true, 'moderated' => false];
2113                 $params = ['order' => ['created' => false]];
2114                 $thread = dba::selectFirst('thread', ['created'], $condition, $params);
2115                 if (DBM::is_result($thread)) {
2116                         return substr(DateTimeFormat::local($thread['created']), 0, 10);
2117                 }
2118                 return false;
2119         }
2120
2121         /**
2122          * @brief add/remove activity to an item
2123          *
2124          * Toggle activities as like,dislike,attend of an item
2125          *
2126          * @param string $item_id
2127          * @param string $verb
2128          *              Activity verb. One of
2129          *                      like, unlike, dislike, undislike, attendyes, unattendyes,
2130          *                      attendno, unattendno, attendmaybe, unattendmaybe
2131          * @hook 'post_local_end'
2132          *              array $arr
2133          *                      'post_id' => ID of posted item
2134          */
2135         public static function performLike($item_id, $verb)
2136         {
2137                 if (!local_user() && !remote_user()) {
2138                         return false;
2139                 }
2140
2141                 switch ($verb) {
2142                         case 'like':
2143                         case 'unlike':
2144                                 $bodyverb = L10n::t('%1$s likes %2$s\'s %3$s');
2145                                 $activity = ACTIVITY_LIKE;
2146                                 break;
2147                         case 'dislike':
2148                         case 'undislike':
2149                                 $bodyverb = L10n::t('%1$s doesn\'t like %2$s\'s %3$s');
2150                                 $activity = ACTIVITY_DISLIKE;
2151                                 break;
2152                         case 'attendyes':
2153                         case 'unattendyes':
2154                                 $bodyverb = L10n::t('%1$s is attending %2$s\'s %3$s');
2155                                 $activity = ACTIVITY_ATTEND;
2156                                 break;
2157                         case 'attendno':
2158                         case 'unattendno':
2159                                 $bodyverb = L10n::t('%1$s is not attending %2$s\'s %3$s');
2160                                 $activity = ACTIVITY_ATTENDNO;
2161                                 break;
2162                         case 'attendmaybe':
2163                         case 'unattendmaybe':
2164                                 $bodyverb = L10n::t('%1$s may attend %2$s\'s %3$s');
2165                                 $activity = ACTIVITY_ATTENDMAYBE;
2166                                 break;
2167                         default:
2168                                 logger('like: unknown verb ' . $verb . ' for item ' . $item_id);
2169                                 return false;
2170                 }
2171
2172                 // Enable activity toggling instead of on/off
2173                 $event_verb_flag = $activity === ACTIVITY_ATTEND || $activity === ACTIVITY_ATTENDNO || $activity === ACTIVITY_ATTENDMAYBE;
2174
2175                 logger('like: verb ' . $verb . ' item ' . $item_id);
2176
2177                 $item = dba::selectFirst('item', [], ['`id` = ? OR `uri` = ?', $item_id, $item_id]);
2178                 if (!DBM::is_result($item)) {
2179                         logger('like: unknown item ' . $item_id);
2180                         return false;
2181                 }
2182
2183                 $uid = $item['uid'];
2184                 if (($uid == 0) && local_user()) {
2185                         $uid = local_user();
2186                 }
2187
2188                 if (!can_write_wall($uid)) {
2189                         logger('like: unable to write on wall ' . $uid);
2190                         return false;
2191                 }
2192
2193                 // Retrieves the local post owner
2194                 $owner_self_contact = dba::selectFirst('contact', [], ['uid' => $uid, 'self' => true]);
2195                 if (!DBM::is_result($owner_self_contact)) {
2196                         logger('like: unknown owner ' . $uid);
2197                         return false;
2198                 }
2199
2200                 // Retrieve the current logged in user's public contact
2201                 $author_id = public_contact();
2202
2203                 $author_contact = dba::selectFirst('contact', [], ['id' => $author_id]);
2204                 if (!DBM::is_result($author_contact)) {
2205                         logger('like: unknown author ' . $author_id);
2206                         return false;
2207                 }
2208
2209                 // Contact-id is the uid-dependant author contact
2210                 if (local_user() == $uid) {
2211                         $item_contact_id = $owner_self_contact['id'];
2212                         $item_contact = $owner_self_contact;
2213                 } else {
2214                         $item_contact_id = Contact::getIdForURL($author_contact['url'], $uid, true);
2215                         $item_contact = dba::selectFirst('contact', [], ['id' => $item_contact_id]);
2216                         if (!DBM::is_result($item_contact)) {
2217                                 logger('like: unknown item contact ' . $item_contact_id);
2218                                 return false;
2219                         }
2220                 }
2221
2222                 // Look for an existing verb row
2223                 // event participation are essentially radio toggles. If you make a subsequent choice,
2224                 // we need to eradicate your first choice.
2225                 if ($event_verb_flag) {
2226                         $verbs = "'" . dbesc(ACTIVITY_ATTEND) . "', '" . dbesc(ACTIVITY_ATTENDNO) . "', '" . dbesc(ACTIVITY_ATTENDMAYBE) . "'";
2227                 } else {
2228                         $verbs = "'".dbesc($activity)."'";
2229                 }
2230
2231                 /// @todo This query is expected to be a performance eater due to the "OR" - it has to be changed totally
2232                 $existing_like = q("SELECT `id`, `guid`, `verb` FROM `item`
2233                         WHERE `verb` IN ($verbs)
2234                         AND `deleted` = 0
2235                         AND `author-id` = %d
2236                         AND `uid` = %d
2237                         AND (`parent` = '%s' OR `parent-uri` = '%s' OR `thr-parent` = '%s')
2238                         LIMIT 1",
2239                         intval($author_contact['id']),
2240                         intval($item['uid']),
2241                         dbesc($item_id), dbesc($item_id), dbesc($item['uri'])
2242                 );
2243
2244                 // If it exists, mark it as deleted
2245                 if (DBM::is_result($existing_like)) {
2246                         $like_item = $existing_like[0];
2247
2248                         // Already voted, undo it
2249                         $fields = ['deleted' => true, 'unseen' => true, 'changed' => DateTimeFormat::utcNow()];
2250                         dba::update('item', $fields, ['id' => $like_item['id']]);
2251
2252                         // Clean up the Diaspora signatures for this like
2253                         // Go ahead and do it even if Diaspora support is disabled. We still want to clean up
2254                         // if it had been enabled in the past
2255                         dba::delete('sign', ['iid' => $like_item['id']]);
2256
2257                         $like_item_id = $like_item['id'];
2258                         Worker::add(PRIORITY_HIGH, "Notifier", "like", $like_item_id);
2259
2260                         if (!$event_verb_flag || $like_item['verb'] == $activity) {
2261                                 return true;
2262                         }
2263                 }
2264
2265                 // Verb is "un-something", just trying to delete existing entries
2266                 if (strpos($verb, 'un') === 0) {
2267                         return true;
2268                 }
2269
2270                 // Else or if event verb different from existing row, create a new item row
2271                 $post_type = (($item['resource-id']) ? L10n::t('photo') : L10n::t('status'));
2272                 if ($item['object-type'] === ACTIVITY_OBJ_EVENT) {
2273                         $post_type = L10n::t('event');
2274                 }
2275                 $objtype = $item['resource-id'] ? ACTIVITY_OBJ_IMAGE : ACTIVITY_OBJ_NOTE ;
2276                 $link = xmlify('<link rel="alternate" type="text/html" href="' . System::baseUrl() . '/display/' . $owner_self_contact['nick'] . '/' . $item['id'] . '" />' . "\n") ;
2277                 $body = $item['body'];
2278
2279                 $obj = <<< EOT
2280
2281                 <object>
2282                         <type>$objtype</type>
2283                         <local>1</local>
2284                         <id>{$item['uri']}</id>
2285                         <link>$link</link>
2286                         <title></title>
2287                         <content>$body</content>
2288                 </object>
2289 EOT;
2290
2291                 $ulink = '[url=' . $author_contact['url'] . ']' . $author_contact['name'] . '[/url]';
2292                 $alink = '[url=' . $item['author-link'] . ']' . $item['author-name'] . '[/url]';
2293                 $plink = '[url=' . System::baseUrl() . '/display/' . $owner_self_contact['nick'] . '/' . $item['id'] . ']' . $post_type . '[/url]';
2294
2295                 $new_item = [
2296                         'guid'          => get_guid(32),
2297                         'uri'           => item_new_uri(self::getApp()->get_hostname(), $item['uid']),
2298                         'uid'           => $item['uid'],
2299                         'contact-id'    => $item_contact_id,
2300                         'type'          => 'activity',
2301                         'wall'          => $item['wall'],
2302                         'origin'        => 1,
2303                         'gravity'       => GRAVITY_LIKE,
2304                         'parent'        => $item['id'],
2305                         'parent-uri'    => $item['uri'],
2306                         'thr-parent'    => $item['uri'],
2307                         'owner-id'      => $item['owner-id'],
2308                         'owner-name'    => $item['owner-name'],
2309                         'owner-link'    => $item['owner-link'],
2310                         'owner-avatar'  => $item['owner-avatar'],
2311                         'author-id'     => $author_contact['id'],
2312                         'author-name'   => $author_contact['name'],
2313                         'author-link'   => $author_contact['url'],
2314                         'author-avatar' => $author_contact['thumb'],
2315                         'body'          => sprintf($bodyverb, $ulink, $alink, $plink),
2316                         'verb'          => $activity,
2317                         'object-type'   => $objtype,
2318                         'object'        => $obj,
2319                         'allow_cid'     => $item['allow_cid'],
2320                         'allow_gid'     => $item['allow_gid'],
2321                         'deny_cid'      => $item['deny_cid'],
2322                         'deny_gid'      => $item['deny_gid'],
2323                         'visible'       => 1,
2324                         'unseen'        => 1,
2325                 ];
2326
2327                 $new_item_id = self::insert($new_item);
2328
2329                 // If the parent item isn't visible then set it to visible
2330                 if (!$item['visible']) {
2331                         self::update(['visible' => true], ['id' => $item['id']]);
2332                 }
2333
2334                 // Save the author information for the like in case we need to relay to Diaspora
2335                 Diaspora::storeLikeSignature($item_contact, $new_item_id);
2336
2337                 $new_item['id'] = $new_item_id;
2338
2339                 Addon::callHooks('post_local_end', $new_item);
2340
2341                 Worker::add(PRIORITY_HIGH, "Notifier", "like", $new_item_id);
2342
2343                 return true;
2344         }
2345
2346         private static function addThread($itemid, $onlyshadow = false)
2347         {
2348                 $fields = ['uid', 'created', 'edited', 'commented', 'received', 'changed', 'wall', 'private', 'pubmail',
2349                         'moderated', 'visible', 'starred', 'bookmark', 'contact-id',
2350                         'deleted', 'origin', 'forum_mode', 'mention', 'network', 'author-id', 'owner-id'];
2351                 $condition = ["`id` = ? AND (`parent` = ? OR `parent` = 0)", $itemid, $itemid];
2352                 $item = dba::selectFirst('item', $fields, $condition);
2353
2354                 if (!DBM::is_result($item)) {
2355                         return;
2356                 }
2357
2358                 $item['iid'] = $itemid;
2359
2360                 if (!$onlyshadow) {
2361                         $result = dba::insert('thread', $item);
2362
2363                         logger("Add thread for item ".$itemid." - ".print_r($result, true), LOGGER_DEBUG);
2364                 }
2365         }
2366
2367         private static function updateThread($itemid, $setmention = false)
2368         {
2369                 $fields = ['uid', 'guid', 'title', 'body', 'created', 'edited', 'commented', 'received', 'changed',
2370                         'wall', 'private', 'pubmail', 'moderated', 'visible', 'starred', 'bookmark', 'contact-id',
2371                         'deleted', 'origin', 'forum_mode', 'network', 'author-id', 'owner-id', 'rendered-html', 'rendered-hash'];
2372                 $condition = ["`id` = ? AND (`parent` = ? OR `parent` = 0)", $itemid, $itemid];
2373
2374                 $item = dba::selectFirst('item', $fields, $condition);
2375                 if (!DBM::is_result($item)) {
2376                         return;
2377                 }
2378
2379                 if ($setmention) {
2380                         $item["mention"] = 1;
2381                 }
2382
2383                 $sql = "";
2384
2385                 $fields = [];
2386
2387                 foreach ($item as $field => $data) {
2388                         if (!in_array($field, ["guid", "title", "body", "rendered-html", "rendered-hash"])) {
2389                                 $fields[$field] = $data;
2390                         }
2391                 }
2392
2393                 $result = dba::update('thread', $fields, ['iid' => $itemid]);
2394
2395                 logger("Update thread for item ".$itemid." - guid ".$item["guid"]." - ".(int)$result, LOGGER_DEBUG);
2396
2397                 // Updating a shadow item entry
2398                 $items = dba::selectFirst('item', ['id'], ['guid' => $item['guid'], 'uid' => 0]);
2399
2400                 if (!DBM::is_result($items)) {
2401                         return;
2402                 }
2403
2404                 $fields = ['title' => $item['title'], 'body' => $item['body'],
2405                         'rendered-html' => $item['rendered-html'], 'rendered-hash' => $item['rendered-hash']];
2406                 $result = dba::update('item', $fields, ['id' => $items['id']]);
2407
2408                 logger("Updating public shadow for post ".$items["id"]." - guid ".$item["guid"]." Result: ".print_r($result, true), LOGGER_DEBUG);
2409         }
2410
2411         private static function deleteThread($itemid, $itemuri = "")
2412         {
2413                 $item = dba::selectFirst('thread', ['uid'], ['iid' => $itemid]);
2414                 if (!DBM::is_result($item)) {
2415                         logger('No thread found for id '.$itemid, LOGGER_DEBUG);
2416                         return;
2417                 }
2418
2419                 // Using dba::delete at this time could delete the associated item entries
2420                 $result = dba::e("DELETE FROM `thread` WHERE `iid` = ?", $itemid);
2421
2422                 logger("deleteThread: Deleted thread for item ".$itemid." - ".print_r($result, true), LOGGER_DEBUG);
2423
2424                 if ($itemuri != "") {
2425                         $condition = ["`uri` = ? AND NOT `deleted` AND NOT (`uid` IN (?, 0))", $itemuri, $item["uid"]];
2426                         if (!dba::exists('item', $condition)) {
2427                                 dba::delete('item', ['uri' => $itemuri, 'uid' => 0]);
2428                                 logger("deleteThread: Deleted shadow for item ".$itemuri, LOGGER_DEBUG);
2429                         }
2430                 }
2431         }
2432 }