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                 $fields = self::fieldlist($selected);
  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                 $fields = self::fieldlist($selected);
 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, $condition);
 154         }
 155
 156         /**
 157          * @brief Returns a list of fields that are associated with the item table
 158          *
 159          * @return array field list
 160          */
 161         private static function fieldlist($selected)
 162         {
 163                 /*
 164                 These Fields are not added below. They are here to for bug search.
 165                 'type', 'extid', 'changed', 'moderated', 'target-type', 'target', 'resource-id',
 166                 'tag', 'inform', 'pubmail', 'visible', 'bookmark', 'unseen', 'deleted',
 167                 'forum_mode', 'mention', 'global', 'shadow',
 168                 */
 169
 170                 $item_fields = ['author-id', 'owner-id', 'contact-id', 'uid', 'id', 'parent',
 171                         'uri', 'thr-parent', 'parent-uri', 'content-warning',
 172                         'commented', 'created', 'edited', 'received', 'verb', 'object-type', 'postopts', 'plink',
 173                         'guid', 'wall', 'private', 'starred', 'origin', 'title', 'body', 'file', 'event-id',
 174                         'location', 'coord', 'app', 'attach', 'rendered-hash', 'rendered-html', 'object',
 175                         'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'unseen',
 176                         'id' => 'item_id', 'network' => 'item_network'];
 177
 178                 $author_fields = ['url' => 'author-link', 'name' => 'author-name', 'thumb' => 'author-avatar'];
 179                 $owner_fields = ['url' => 'owner-link', 'name' => 'owner-name', 'thumb' => 'owner-avatar'];
 180                 $contact_fields = ['url' => 'contact-link', 'name' => 'contact-name', 'thumb' => 'contact-avatar',
 181                         'network', 'url', 'name', 'writable', 'self', 'id' => 'cid', 'alias'];
 182
 183                 $event_fields = ['created' => 'event-created', 'edited' => 'event-edited',
 184                         'start' => 'event-start','finish' => 'event-finish',
 185                         'summary' => 'event-summary','desc' => 'event-desc',
 186                         'location' => 'event-location', 'type' => 'event-type',
 187                         'nofinish' => 'event-nofinish','adjust' => 'event-adjust',
 188                         'ignore' => 'event-ignore', 'id' => 'event-id'];
 189
 190                 $fields = ['item' => $item_fields, 'author' => $author_fields, 'owner' => $owner_fields,
 191                         'contact' => $contact_fields, 'event' => $event_fields];
 192
 193                 if (!empty($selected)) {
 194                         $fields['parent-item'] = ['guid' => 'parent-guid'];
 195                         $fields['parent-item-author'] = ['url' => 'parent-author-link', 'name' => 'parent-author-name'];
 196                 }
 197
 198                 return $fields;
 199         }
 200
 201         /**
 202          * @brief Returns SQL condition for the "select" functions
 203          *
 204          * @param boolean $thread_mode Called for the items (false) or for the threads (true)
 205          *
 206          * @return string SQL condition
 207          */
 208         private static function condition($thread_mode)
 209         {
 210                 if ($thread_mode) {
 211                         $master_table = "`thread`";
 212                 } else {
 213                         $master_table = "`item`";
 214                 }
 215                 return "$master_table.`visible` AND NOT $master_table.`deleted` AND NOT $master_table.`moderated` AND (`user-item`.`hidden` IS NULL OR NOT `user-item`.`hidden`) ";
 216         }
 217
 218         /**
 219          * @brief Returns all needed "JOIN" commands for the "select" functions
 220          *
 221          * @param integer $uid User ID
 222          * @param string $sql_commands The parts of the built SQL commands in the "select" functions
 223          * @param boolean $thread_mode Called for the items (false) or for the threads (true)
 224          *
 225          * @return string The SQL joins for the "select" functions
 226          */
 227         private static function constructJoins($uid, $sql_commands, $thread_mode)
 228         {
 229                 if ($thread_mode) {
 230                         $master_table = "`thread`";
 231                         $master_table_key = "`thread`.`iid`";
 232                         $joins = "STRAIGHT_JOIN `item` ON `item`.`id` = `thread`.`iid` ";
 233                 } else {
 234                         $master_table = "`item`";
 235                         $master_table_key = "`item`.`id`";
 236                         $joins = '';
 237                 }
 238
 239                 $joins .= sprintf("STRAIGHT_JOIN `contact` ON `contact`.`id` = $master_table.`contact-id`
 240                         AND NOT `contact`.`blocked`
 241                         AND ((NOT `contact`.`readonly` AND NOT `contact`.`pending` AND (`contact`.`rel` IN (%s, %s)))
 242                         OR `contact`.`self` OR (`item`.`id` != `item`.`parent`) OR `contact`.`uid` = 0)
 243                         STRAIGHT_JOIN `contact` AS `author` ON `author`.`id` = $master_table.`author-id` AND NOT `author`.`blocked`
 244                         STRAIGHT_JOIN `contact` AS `owner` ON `owner`.`id` = $master_table.`owner-id` AND NOT `owner`.`blocked`
 245                         LEFT JOIN `user-item` ON `user-item`.`iid` = $master_table_key AND `user-item`.`uid` = %d",
 246                         CONTACT_IS_SHARING, CONTACT_IS_FRIEND, intval($uid));
 247
 248                 if (strpos($sql_commands, "`group_member`.") !== false) {
 249                         $joins .= " STRAIGHT_JOIN `group_member` ON `group_member`.`contact-id` = $master_table.`contact-id`";
 250                 }
 251
 252                 if (strpos($sql_commands, "`user`.") !== false) {
 253                         $joins .= " STRAIGHT_JOIN `user` ON `user`.`uid` = $master_table.`uid`";
 254                 }
 255
 256                 if (strpos($sql_commands, "`event`.") !== false) {
 257                         $joins .= " LEFT JOIN `event` ON `event-id` = `event`.`id`";
 258                 }
 259
 260                 if ((strpos($sql_commands, "`parent-item`.") !== false) || (strpos($sql_commands, "`parent-author`.") !== false)) {
 261                         $joins .= " STRAIGHT_JOIN `item` AS `parent-item` ON `parent-item`.`id` = `item`.`parent`";
 262                 }
 263
 264                 if (strpos($sql_commands, "`parent-item-author`.") !== false) {
 265                         $joins .= " STRAIGHT_JOIN `contact` AS `parent-item-author` ON `parent-item-author`.`id` = `parent-item`.`author-id`";
 266                 }
 267
 268                 return $joins;
 269         }
 270
 271         /**
 272          * @brief Add the field list for the "select" functions
 273          *
 274          * @param array $fields The field definition array
 275          * @param array $selected The array with the selected fields from the "select" functions
 276          *
 277          * @return string The field list
 278          */
 279         private static function constructSelectFields($fields, $selected)
 280         {
 281                 $selection = [];
 282                 foreach ($fields as $table => $table_fields) {
 283                         foreach ($table_fields as $field => $select) {
 284                                 if (empty($selected) || in_array($select, $selected)) {
 285                                         if (is_int($field)) {
 286                                                 $selection[] = "`" . $table . "`.`".$select."`";
 287                                         } else {
 288                                                 $selection[] = "`" . $table . "`.`" . $field . "` AS `".$select ."`";
 289                                         }
 290                                 }
 291                         }
 292                 }
 293                 return implode(", ", $selection);
 294         }
 295
 296         /**
 297          * @brief add table definition to fields in an SQL query
 298          *
 299          * @param string $query SQL query
 300          * @param array $fields The field definition array
 301          *
 302          * @return string the changed SQL query
 303          */
 304         private static function addTablesToFields($query, $fields)
 305         {
 306                 foreach ($fields as $table => $table_fields) {
 307                         foreach ($table_fields as $alias => $field) {
 308                                 if (is_int($alias)) {
 309                                         $replace_field = $field;
 310                                 } else {
 311                                         $replace_field = $alias;
 312                                 }
 313
 314                                 $search = "/([^\.])`" . $field . "`/i";
 315                                 $replace = "$1`" . $table . "`.`" . $replace_field . "`";
 316                                 $query = preg_replace($search, $replace, $query);
 317                         }
 318                 }
 319                 return $query;
 320         }
 321
 322         /**
 323          * @brief Update existing item entries
 324          *
 325          * @param array $fields The fields that are to be changed
 326          * @param array $condition The condition for finding the item entries
 327          *
 328          * In the future we may have to change permissions as well.
 329          * Then we had to add the user id as third parameter.
 330          *
 331          * A return value of "0" doesn't mean an error - but that 0 rows had been changed.
 332          *
 333          * @return integer|boolean number of affected rows - or "false" if there was an error
 334          */
 335         public static function update(array $fields, array $condition)
 336         {
 337                 if (empty($condition) || empty($fields)) {
 338                         return false;
 339                 }
 340
 341                 // To ensure the data integrity we do it in an transaction
 342                 dba::transaction();
 343
 344                 // We cannot simply expand the condition to check for origin entries
 345                 // The condition needn't to be a simple array but could be a complex condition.
 346                 // And we have to execute this query before the update to ensure to fetch the same data.
 347                 $items = dba::select('item', ['id', 'origin'], $condition);
 348
 349                 $success = dba::update('item', $fields, $condition);
 350
 351                 if (!$success) {
 352                         dba::close($items);
 353                         dba::rollback();
 354                         return false;
 355                 }
 356
 357                 $rows = dba::affected_rows();
 358
 359                 while ($item = dba::fetch($items)) {
 360                         Term::insertFromTagFieldByItemId($item['id']);
 361                         Term::insertFromFileFieldByItemId($item['id']);
 362                         self::updateThread($item['id']);
 363
 364                         // We only need to notfiy others when it is an original entry from us.
 365                         // Only call the notifier when the item has some content relevant change.
 366                         if ($item['origin'] && in_array('edited', array_keys($fields))) {
 367                                 Worker::add(PRIORITY_HIGH, "Notifier", 'edit_post', $item['id']);
 368                         }
 369                 }
 370
 371                 dba::close($items);
 372                 dba::commit();
 373                 return $rows;
 374         }
 375
 376         /**
 377          * @brief Delete an item and notify others about it - if it was ours
 378          *
 379          * @param array $condition The condition for finding the item entries
 380          * @param integer $priority Priority for the notification
 381          */
 382         public static function delete($condition, $priority = PRIORITY_HIGH)
 383         {
 384                 $items = dba::select('item', ['id'], $condition);
 385                 while ($item = dba::fetch($items)) {
 386                         self::deleteById($item['id'], $priority);
 387                 }
 388                 dba::close($items);
 389         }
 390
 391         /**
 392          * @brief Delete an item for an user and notify others about it - if it was ours
 393          *
 394          * @param array $condition The condition for finding the item entries
 395          * @param integer $uid User who wants to delete this item
 396          */
 397         public static function deleteForUser($condition, $uid)
 398         {
 399                 if ($uid == 0) {
 400                         return;
 401                 }
 402
 403                 $items = dba::select('item', ['id', 'uid'], $condition);
 404                 while ($item = dba::fetch($items)) {
 405                         // "Deleting" global items just means hiding them
 406                         if ($item['uid'] == 0) {
 407                                 dba::update('user-item', ['hidden' => true], ['iid' => $item['id'], 'uid' => $uid], true);
 408                         } elseif ($item['uid'] == $uid) {
 409                                 self::deleteById($item['id'], PRIORITY_HIGH);
 410                         } else {
 411                                 logger('Wrong ownership. Not deleting item ' . $item['id']);
 412                         }
 413                 }
 414                 dba::close($items);
 415         }
 416
 417         /**
 418          * @brief Delete an item and notify others about it - if it was ours
 419          *
 420          * @param integer $item_id Item ID that should be delete
 421          * @param integer $priority Priority for the notification
 422          *
 423          * @return boolean success
 424          */
 425         private static function deleteById($item_id, $priority = PRIORITY_HIGH)
 426         {
 427                 // locate item to be deleted
 428                 $fields = ['id', 'uri', 'uid', 'parent', 'parent-uri', 'origin',
 429                         'deleted', 'file', 'resource-id', 'event-id', 'attach',
 430                         'verb', 'object-type', 'object', 'target', 'contact-id'];
 431                 $item = dba::selectFirst('item', $fields, ['id' => $item_id]);
 432                 if (!DBM::is_result($item)) {
 433                         logger('Item with ID ' . $item_id . " hasn't been found.", LOGGER_DEBUG);
 434                         return false;
 435                 }
 436
 437                 if ($item['deleted']) {
 438                         logger('Item with ID ' . $item_id . ' has already been deleted.', LOGGER_DEBUG);
 439                         return false;
 440                 }
 441
 442                 $parent = dba::selectFirst('item', ['origin'], ['id' => $item['parent']]);
 443                 if (!DBM::is_result($parent)) {
 444                         $parent = ['origin' => false];
 445                 }
 446
 447                 // clean up categories and tags so they don't end up as orphans
 448
 449                 $matches = false;
 450                 $cnt = preg_match_all('/<(.*?)>/', $item['file'], $matches, PREG_SET_ORDER);
 451                 if ($cnt) {
 452                         foreach ($matches as $mtch) {
 453                                 file_tag_unsave_file($item['uid'], $item['id'], $mtch[1],true);
 454                         }
 455                 }
 456
 457                 $matches = false;
 458
 459                 $cnt = preg_match_all('/\[(.*?)\]/', $item['file'], $matches, PREG_SET_ORDER);
 460                 if ($cnt) {
 461                         foreach ($matches as $mtch) {
 462                                 file_tag_unsave_file($item['uid'], $item['id'], $mtch[1],false);
 463                         }
 464                 }
 465
 466                 /*
 467                  * If item is a link to a photo resource, nuke all the associated photos
 468                  * (visitors will not have photo resources)
 469                  * This only applies to photos uploaded from the photos page. Photos inserted into a post do not
 470                  * generate a resource-id and therefore aren't intimately linked to the item.
 471                  */
 472                 if (strlen($item['resource-id'])) {
 473                         dba::delete('photo', ['resource-id' => $item['resource-id'], 'uid' => $item['uid']]);
 474                 }
 475
 476                 // If item is a link to an event, delete the event.
 477                 if (intval($item['event-id'])) {
 478                         Event::delete($item['event-id']);
 479                 }
 480
 481                 // If item has attachments, drop them
 482                 foreach (explode(", ", $item['attach']) as $attach) {
 483                         preg_match("|attach/(\d+)|", $attach, $matches);
 484                         dba::delete('attach', ['id' => $matches[1], 'uid' => $item['uid']]);
 485                 }
 486
 487                 // Delete tags that had been attached to other items
 488                 self::deleteTagsFromItem($item);
 489
 490                 // Set the item to "deleted"
 491                 dba::update('item', ['deleted' => true, 'title' => '', 'body' => '',
 492                                         'edited' => DateTimeFormat::utcNow(), 'changed' => DateTimeFormat::utcNow()],
 493                                 ['id' => $item['id']]);
 494
 495                 Term::insertFromTagFieldByItemId($item['id']);
 496                 Term::insertFromFileFieldByItemId($item['id']);
 497                 self::deleteThread($item['id'], $item['parent-uri']);
 498
 499                 if (!dba::exists('item', ["`uri` = ? AND `uid` != 0 AND NOT `deleted`", $item['uri']])) {
 500                         self::delete(['uri' => $item['uri'], 'uid' => 0, 'deleted' => false], $priority);
 501                 }
 502
 503                 // If it's the parent of a comment thread, kill all the kids
 504                 if ($item['id'] == $item['parent']) {
 505                         self::delete(['parent' => $item['parent'], 'deleted' => false], $priority);
 506                 }
 507
 508                 // Is it our comment and/or our thread?
 509                 if ($item['origin'] || $parent['origin']) {
 510
 511                         // When we delete the original post we will delete all existing copies on the server as well
 512                         self::delete(['uri' => $item['uri'], 'deleted' => false], $priority);
 513
 514                         // send the notification upstream/downstream
 515                         Worker::add(['priority' => $priority, 'dont_fork' => true], "Notifier", "drop", intval($item['id']));
 516                 } elseif ($item['uid'] != 0) {
 517
 518                         // When we delete just our local user copy of an item, we have to set a marker to hide it
 519                         $global_item = dba::selectFirst('item', ['id'], ['uri' => $item['uri'], 'uid' => 0, 'deleted' => false]);
 520                         if (DBM::is_result($global_item)) {
 521                                 dba::update('user-item', ['hidden' => true], ['iid' => $global_item['id'], 'uid' => $item['uid']], true);
 522                         }
 523                 }
 524
 525                 logger('Item with ID ' . $item_id . " has been deleted.", LOGGER_DEBUG);
 526
 527                 return true;
 528         }
 529
 530         private static function deleteTagsFromItem($item)
 531         {
 532                 if (($item["verb"] != ACTIVITY_TAG) || ($item["object-type"] != ACTIVITY_OBJ_TAGTERM)) {
 533                         return;
 534                 }
 535
 536                 $xo = XML::parseString($item["object"], false);
 537                 $xt = XML::parseString($item["target"], false);
 538
 539                 if ($xt->type != ACTIVITY_OBJ_NOTE) {
 540                         return;
 541                 }
 542
 543                 $i = dba::selectFirst('item', ['id', 'contact-id', 'tag'], ['uri' => $xt->id, 'uid' => $item['uid']]);
 544                 if (!DBM::is_result($i)) {
 545                         return;
 546                 }
 547
 548                 // For tags, the owner cannot remove the tag on the author's copy of the post.
 549                 $owner_remove = ($item["contact-id"] == $i["contact-id"]);
 550                 $author_copy = $item["origin"];
 551
 552                 if (($owner_remove && $author_copy) || !$owner_remove) {
 553                         return;
 554                 }
 555
 556                 $tags = explode(',', $i["tag"]);
 557                 $newtags = [];
 558                 if (count($tags)) {
 559                         foreach ($tags as $tag) {
 560                                 if (trim($tag) !== trim($xo->body)) {
 561                                        $newtags[] = trim($tag);
 562                                 }
 563                         }
 564                 }
 565                 self::update(['tag' => implode(',', $newtags)], ['id' => $i["id"]]);
 566         }
 567
 568         private static function guid($item, $notify)
 569         {
 570                 $guid = notags(trim($item['guid']));
 571
 572                 if (!empty($guid)) {
 573                         return $guid;
 574                 }
 575
 576                 if ($notify) {
 577                         // We have to avoid duplicates. So we create the GUID in form of a hash of the plink or uri.
 578                         // We add the hash of our own host because our host is the original creator of the post.
 579                         $prefix_host = get_app()->get_hostname();
 580                 } else {
 581                         $prefix_host = '';
 582
 583                         // We are only storing the post so we create a GUID from the original hostname.
 584                         if (!empty($item['author-link'])) {
 585                                 $parsed = parse_url($item['author-link']);
 586                                 if (!empty($parsed['host'])) {
 587                                         $prefix_host = $parsed['host'];
 588                                 }
 589                         }
 590
 591                         if (empty($prefix_host) && !empty($item['plink'])) {
 592                                 $parsed = parse_url($item['plink']);
 593                                 if (!empty($parsed['host'])) {
 594                                         $prefix_host = $parsed['host'];
 595                                 }
 596                         }
 597
 598                         if (empty($prefix_host) && !empty($item['uri'])) {
 599                                 $parsed = parse_url($item['uri']);
 600                                 if (!empty($parsed['host'])) {
 601                                         $prefix_host = $parsed['host'];
 602                                 }
 603                         }
 604
 605                         // Is it in the format data@host.tld? - Used for mail contacts
 606                         if (empty($prefix_host) && !empty($item['author-link']) && strstr($item['author-link'], '@')) {
 607                                 $mailparts = explode('@', $item['author-link']);
 608                                 $prefix_host = array_pop($mailparts);
 609                         }
 610                 }
 611
 612                 if (!empty($item['plink'])) {
 613                         $guid = self::guidFromUri($item['plink'], $prefix_host);
 614                 } elseif (!empty($item['uri'])) {
 615                         $guid = self::guidFromUri($item['uri'], $prefix_host);
 616                 } else {
 617                         $guid = get_guid(32, hash('crc32', $prefix_host));
 618                 }
 619
 620                 return $guid;
 621         }
 622
 623         private static function contactId($item)
 624         {
 625                 $contact_id = (int)$item["contact-id"];
 626
 627                 if (!empty($contact_id)) {
 628                         return $contact_id;
 629                 }
 630                 logger('Missing contact-id. Called by: '.System::callstack(), LOGGER_DEBUG);
 631                 /*
 632                  * First we are looking for a suitable contact that matches with the author of the post
 633                  * This is done only for comments
 634                  */
 635                 if ($item['parent-uri'] != $item['uri']) {
 636                         $contact_id = Contact::getIdForURL($item['author-link'], $item['uid']);
 637                 }
 638
 639                 // If not present then maybe the owner was found
 640                 if ($contact_id == 0) {
 641                         $contact_id = Contact::getIdForURL($item['owner-link'], $item['uid']);
 642                 }
 643
 644                 // Still missing? Then use the "self" contact of the current user
 645                 if ($contact_id == 0) {
 646                         $self = dba::selectFirst('contact', ['id'], ['self' => true, 'uid' => $item['uid']]);
 647                         if (DBM::is_result($self)) {
 648                                 $contact_id = $self["id"];
 649                         }
 650                 }
 651                 logger("Contact-id was missing for post ".$item['guid']." from user id ".$item['uid']." - now set to ".$contact_id, LOGGER_DEBUG);
 652
 653                 return $contact_id;
 654         }
 655
 656         public static function insert($item, $force_parent = false, $notify = false, $dontcache = false)
 657         {
 658                 $a = get_app();
 659
 660                 // If it is a posting where users should get notifications, then define it as wall posting
 661                 if ($notify) {
 662                         $item['wall'] = 1;
 663                         $item['type'] = 'wall';
 664                         $item['origin'] = 1;
 665                         $item['network'] = NETWORK_DFRN;
 666                         $item['protocol'] = PROTOCOL_DFRN;
 667
 668                         if (is_int($notify)) {
 669                                 $priority = $notify;
 670                         } else {
 671                                 $priority = PRIORITY_HIGH;
 672                         }
 673                 } else {
 674                         $item['network'] = trim(defaults($item, 'network', NETWORK_PHANTOM));
 675                 }
 676
 677                 $item['guid'] = self::guid($item, $notify);
 678                 $item['uri'] = notags(trim(defaults($item, 'uri', item_new_uri($a->get_hostname(), $item['uid'], $item['guid']))));
 679
 680                 // Store conversation data
 681                 $item = Conversation::insert($item);
 682
 683                 /*
 684                  * If a Diaspora signature structure was passed in, pull it out of the
 685                  * item array and set it aside for later storage.
 686                  */
 687
 688                 $dsprsig = null;
 689                 if (x($item, 'dsprsig')) {
 690                         $encoded_signature = $item['dsprsig'];
 691                         $dsprsig = json_decode(base64_decode($item['dsprsig']));
 692                         unset($item['dsprsig']);
 693                 }
 694
 695                 if (!empty($item['diaspora_signed_text'])) {
 696                         $diaspora_signed_text = $item['diaspora_signed_text'];
 697                         unset($item['diaspora_signed_text']);
 698                 } else {
 699                         $diaspora_signed_text = '';
 700                 }
 701
 702                 // Converting the plink
 703                 /// @TODO Check if this is really still needed
 704                 if ($item['network'] == NETWORK_OSTATUS) {
 705                         if (isset($item['plink'])) {
 706                                 $item['plink'] = OStatus::convertHref($item['plink']);
 707                         } elseif (isset($item['uri'])) {
 708                                 $item['plink'] = OStatus::convertHref($item['uri']);
 709                         }
 710                 }
 711
 712                 if (!empty($item['thr-parent'])) {
 713                         $item['parent-uri'] = $item['thr-parent'];
 714                 }
 715
 716                 if (x($item, 'gravity')) {
 717                         $item['gravity'] = intval($item['gravity']);
 718                 } elseif ($item['parent-uri'] === $item['uri']) {
 719                         $item['gravity'] = 0;
 720                 } elseif (activity_match($item['verb'],ACTIVITY_POST)) {
 721                         $item['gravity'] = 6;
 722                 } else {
 723                         $item['gravity'] = 6;   // extensible catchall
 724                 }
 725
 726                 $item['type'] = defaults($item, 'type', 'remote');
 727
 728                 $uid = intval($item['uid']);
 729
 730                 // check for create date and expire time
 731                 $expire_interval = Config::get('system', 'dbclean-expire-days', 0);
 732
 733                 $user = dba::selectFirst('user', ['expire'], ['uid' => $uid]);
 734                 if (DBM::is_result($user) && ($user['expire'] > 0) && (($user['expire'] < $expire_interval) || ($expire_interval == 0))) {
 735                         $expire_interval = $user['expire'];
 736                 }
 737
 738                 if (($expire_interval > 0) && !empty($item['created'])) {
 739                         $expire_date = time() - ($expire_interval * 86400);
 740                         $created_date = strtotime($item['created']);
 741                         if ($created_date < $expire_date) {
 742                                 logger('item-store: item created ('.date('c', $created_date).') before expiration time ('.date('c', $expire_date).'). ignored. ' . print_r($item,true), LOGGER_DEBUG);
 743                                 return 0;
 744                         }
 745                 }
 746
 747                 /*
 748                  * Do we already have this item?
 749                  * We have to check several networks since Friendica posts could be repeated
 750                  * via OStatus (maybe Diasporsa as well)
 751                  */
 752                 if (in_array($item['network'], [NETWORK_DIASPORA, NETWORK_DFRN, NETWORK_OSTATUS, ""])) {
 753                         $condition = ["`uri` = ? AND `uid` = ? AND `network` IN (?, ?, ?)",
 754                                 trim($item['uri']), $item['uid'],
 755                                 NETWORK_DIASPORA, NETWORK_DFRN, NETWORK_OSTATUS];
 756                         $existing = dba::selectFirst('item', ['id', 'network'], $condition);
 757                         if (DBM::is_result($existing)) {
 758                                 // We only log the entries with a different user id than 0. Otherwise we would have too many false positives
 759                                 if ($uid != 0) {
 760                                         logger("Item with uri ".$item['uri']." already existed for user ".$uid." with id ".$existing["id"]." target network ".$existing["network"]." - new network: ".$item['network']);
 761                                 }
 762
 763                                 return $existing["id"];
 764                         }
 765                 }
 766
 767                 self::addLanguageInPostopts($item);
 768
 769                 $item['wall']          = intval(defaults($item, 'wall', 0));
 770                 $item['extid']         = trim(defaults($item, 'extid', ''));
 771                 $item['author-name']   = trim(defaults($item, 'author-name', ''));
 772                 $item['author-link']   = trim(defaults($item, 'author-link', ''));
 773                 $item['author-avatar'] = trim(defaults($item, 'author-avatar', ''));
 774                 $item['owner-name']    = trim(defaults($item, 'owner-name', ''));
 775                 $item['owner-link']    = trim(defaults($item, 'owner-link', ''));
 776                 $item['owner-avatar']  = trim(defaults($item, 'owner-avatar', ''));
 777                 $item['received']      = ((x($item, 'received') !== false) ? DateTimeFormat::utc($item['received']) : DateTimeFormat::utcNow());
 778                 $item['created']       = ((x($item, 'created') !== false) ? DateTimeFormat::utc($item['created']) : $item['received']);
 779                 $item['edited']        = ((x($item, 'edited') !== false) ? DateTimeFormat::utc($item['edited']) : $item['created']);
 780                 $item['changed']       = ((x($item, 'changed') !== false) ? DateTimeFormat::utc($item['changed']) : $item['created']);
 781                 $item['commented']     = ((x($item, 'commented') !== false) ? DateTimeFormat::utc($item['commented']) : $item['created']);
 782                 $item['title']         = trim(defaults($item, 'title', ''));
 783                 $item['location']      = trim(defaults($item, 'location', ''));
 784                 $item['coord']         = trim(defaults($item, 'coord', ''));
 785                 $item['visible']       = ((x($item, 'visible') !== false) ? intval($item['visible'])         : 1);
 786                 $item['deleted']       = 0;
 787                 $item['parent-uri']    = trim(defaults($item, 'parent-uri', $item['uri']));
 788                 $item['verb']          = trim(defaults($item, 'verb', ''));
 789                 $item['object-type']   = trim(defaults($item, 'object-type', ''));
 790                 $item['object']        = trim(defaults($item, 'object', ''));
 791                 $item['target-type']   = trim(defaults($item, 'target-type', ''));
 792                 $item['target']        = trim(defaults($item, 'target', ''));
 793                 $item['plink']         = trim(defaults($item, 'plink', ''));
 794                 $item['allow_cid']     = trim(defaults($item, 'allow_cid', ''));
 795                 $item['allow_gid']     = trim(defaults($item, 'allow_gid', ''));
 796                 $item['deny_cid']      = trim(defaults($item, 'deny_cid', ''));
 797                 $item['deny_gid']      = trim(defaults($item, 'deny_gid', ''));
 798                 $item['private']       = intval(defaults($item, 'private', 0));
 799                 $item['bookmark']      = intval(defaults($item, 'bookmark', 0));
 800                 $item['body']          = trim(defaults($item, 'body', ''));
 801                 $item['tag']           = trim(defaults($item, 'tag', ''));
 802                 $item['attach']        = trim(defaults($item, 'attach', ''));
 803                 $item['app']           = trim(defaults($item, 'app', ''));
 804                 $item['origin']        = intval(defaults($item, 'origin', 0));
 805                 $item['postopts']      = trim(defaults($item, 'postopts', ''));
 806                 $item['resource-id']   = trim(defaults($item, 'resource-id', ''));
 807                 $item['event-id']      = intval(defaults($item, 'event-id', 0));
 808                 $item['inform']        = trim(defaults($item, 'inform', ''));
 809                 $item['file']          = trim(defaults($item, 'file', ''));
 810
 811                 // When there is no content then we don't post it
 812                 if ($item['body'].$item['title'] == '') {
 813                         return 0;
 814                 }
 815
 816                 // Items cannot be stored before they happen ...
 817                 if ($item['created'] > DateTimeFormat::utcNow()) {
 818                         $item['created'] = DateTimeFormat::utcNow();
 819                 }
 820
 821                 // We haven't invented time travel by now.
 822                 if ($item['edited'] > DateTimeFormat::utcNow()) {
 823                         $item['edited'] = DateTimeFormat::utcNow();
 824                 }
 825
 826                 if (($item['author-link'] == "") && ($item['owner-link'] == "")) {
 827                         logger("Both author-link and owner-link are empty. Called by: " . System::callstack(), LOGGER_DEBUG);
 828                 }
 829
 830                 $item['plink'] = defaults($item, 'plink', System::baseUrl() . '/display/' . urlencode($item['guid']));
 831
 832                 // The contact-id should be set before "self::insert" was called - but there seems to be issues sometimes
 833                 $item["contact-id"] = self::contactId($item);
 834
 835                 $default = ['url' => $item['author-link'], 'name' => $item['author-name'],
 836                         'photo' => $item['author-avatar'], 'network' => $item['network']];
 837
 838                 $item['author-id'] = defaults($item, 'author-id', Contact::getIdForURL($item["author-link"], 0, false, $default));
 839
 840                 if (Contact::isBlocked($item["author-id"])) {
 841                         logger('Contact '.$item["author-id"].' is blocked, item '.$item["uri"].' will not be stored');
 842                         return 0;
 843                 }
 844
 845                 $default = ['url' => $item['owner-link'], 'name' => $item['owner-name'],
 846                         'photo' => $item['owner-avatar'], 'network' => $item['network']];
 847
 848                 $item['owner-id'] = defaults($item, 'owner-id', Contact::getIdForURL($item["owner-link"], 0, false, $default));
 849
 850                 if (Contact::isBlocked($item["owner-id"])) {
 851                         logger('Contact '.$item["owner-id"].' is blocked, item '.$item["uri"].' will not be stored');
 852                         return 0;
 853                 }
 854
 855                 //unset($item['author-link']);
 856                 //unset($item['author-name']);
 857                 //unset($item['author-avatar']);
 858
 859                 //unset($item['owner-link']);
 860                 unset($item['owner-name']);
 861                 unset($item['owner-avatar']);
 862
 863                 if ($item['network'] == NETWORK_PHANTOM) {
 864                         logger('Missing network. Called by: '.System::callstack(), LOGGER_DEBUG);
 865
 866                         $contact = Contact::getDetailsByURL($item['author-link'], $item['uid']);
 867                         if (!empty($contact['network'])) {
 868                                 $item['network'] = $contact["network"];
 869                         } else {
 870                                 $item['network'] = NETWORK_DFRN;
 871                         }
 872                         logger("Set network to " . $item["network"] . " for " . $item["uri"], LOGGER_DEBUG);
 873                 }
 874
 875                 // Checking if there is already an item with the same guid
 876                 logger('Checking for an item for user '.$item['uid'].' on network '.$item['network'].' with the guid '.$item['guid'], LOGGER_DEBUG);
 877                 $condition = ['guid' => $item['guid'], 'network' => $item['network'], 'uid' => $item['uid']];
 878                 if (dba::exists('item', $condition)) {
 879                         logger('found item with guid '.$item['guid'].' for user '.$item['uid'].' on network '.$item['network'], LOGGER_DEBUG);
 880                         return 0;
 881                 }
 882
 883                 // Check for hashtags in the body and repair or add hashtag links
 884                 self::setHashtags($item);
 885
 886                 $item['thr-parent'] = $item['parent-uri'];
 887
 888                 $notify_type = '';
 889                 $allow_cid = '';
 890                 $allow_gid = '';
 891                 $deny_cid  = '';
 892                 $deny_gid  = '';
 893
 894                 if ($item['parent-uri'] === $item['uri']) {
 895                         $parent_id = 0;
 896                         $parent_deleted = 0;
 897                         $allow_cid = $item['allow_cid'];
 898                         $allow_gid = $item['allow_gid'];
 899                         $deny_cid  = $item['deny_cid'];
 900                         $deny_gid  = $item['deny_gid'];
 901                         $notify_type = 'wall-new';
 902                 } else {
 903                         // find the parent and snarf the item id and ACLs
 904                         // and anything else we need to inherit
 905
 906                         $fields = ['uri', 'parent-uri', 'id', 'deleted',
 907                                 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid',
 908                                 'wall', 'private', 'forum_mode', 'origin'];
 909                         $condition = ['uri' => $item['parent-uri'], 'uid' => $item['uid']];
 910                         $params = ['order' => ['id' => false]];
 911                         $parent = dba::selectFirst('item', $fields, $condition, $params);
 912
 913                         if (DBM::is_result($parent)) {
 914                                 // is the new message multi-level threaded?
 915                                 // even though we don't support it now, preserve the info
 916                                 // and re-attach to the conversation parent.
 917
 918                                 if ($parent['uri'] != $parent['parent-uri']) {
 919                                         $item['parent-uri'] = $parent['parent-uri'];
 920
 921                                         $condition = ['uri' => $item['parent-uri'],
 922                                                 'parent-uri' => $item['parent-uri'],
 923                                                 'uid' => $item['uid']];
 924                                         $params = ['order' => ['id' => false]];
 925                                         $toplevel_parent = dba::selectFirst('item', $fields, $condition, $params);
 926
 927                                         if (DBM::is_result($toplevel_parent)) {
 928                                                 $parent = $toplevel_parent;
 929                                         }
 930                                 }
 931
 932                                 $parent_id      = $parent['id'];
 933                                 $parent_deleted = $parent['deleted'];
 934                                 $allow_cid      = $parent['allow_cid'];
 935                                 $allow_gid      = $parent['allow_gid'];
 936                                 $deny_cid       = $parent['deny_cid'];
 937                                 $deny_gid       = $parent['deny_gid'];
 938                                 $item['wall']    = $parent['wall'];
 939                                 $notify_type    = 'comment-new';
 940
 941                                 /*
 942                                  * If the parent is private, force privacy for the entire conversation
 943                                  * This differs from the above settings as it subtly allows comments from
 944                                  * email correspondents to be private even if the overall thread is not.
 945                                  */
 946                                 if ($parent['private']) {
 947                                         $item['private'] = $parent['private'];
 948                                 }
 949
 950                                 /*
 951                                  * Edge case. We host a public forum that was originally posted to privately.
 952                                  * The original author commented, but as this is a comment, the permissions
 953                                  * weren't fixed up so it will still show the comment as private unless we fix it here.
 954                                  */
 955                                 if ((intval($parent['forum_mode']) == 1) && $parent['private']) {
 956                                         $item['private'] = 0;
 957                                 }
 958
 959                                 // If its a post from myself then tag the thread as "mention"
 960                                 logger("Checking if parent ".$parent_id." has to be tagged as mention for user ".$item['uid'], LOGGER_DEBUG);
 961                                 $user = dba::selectFirst('user', ['nickname'], ['uid' => $item['uid']]);
 962                                 if (DBM::is_result($user)) {
 963                                         $self = normalise_link(System::baseUrl() . '/profile/' . $user['nickname']);
 964                                         logger("'myself' is ".$self." for parent ".$parent_id." checking against ".$item['author-link']." and ".$item['owner-link'], LOGGER_DEBUG);
 965                                         if ((normalise_link($item['author-link']) == $self) || (normalise_link($item['owner-link']) == $self)) {
 966                                                 dba::update('thread', ['mention' => true], ['iid' => $parent_id]);
 967                                                 logger("tagged thread ".$parent_id." as mention for user ".$self, LOGGER_DEBUG);
 968                                         }
 969                                 }
 970                         } else {
 971                                 /*
 972                                  * Allow one to see reply tweets from status.net even when
 973                                  * we don't have or can't see the original post.
 974                                  */
 975                                 if ($force_parent) {
 976                                         logger('$force_parent=true, reply converted to top-level post.');
 977                                         $parent_id = 0;
 978                                         $item['parent-uri'] = $item['uri'];
 979                                         $item['gravity'] = 0;
 980                                 } else {
 981                                         logger('item parent '.$item['parent-uri'].' for '.$item['uid'].' was not found - ignoring item');
 982                                         return 0;
 983                                 }
 984
 985                                 $parent_deleted = 0;
 986                         }
 987                 }
 988
 989                 $condition = ["`uri` = ? AND `network` IN (?, ?) AND `uid` = ?",
 990                         $item['uri'], $item['network'], NETWORK_DFRN, $item['uid']];
 991                 if (dba::exists('item', $condition)) {
 992                         logger('duplicated item with the same uri found. '.print_r($item,true));
 993                         return 0;
 994                 }
 995
 996                 // On Friendica and Diaspora the GUID is unique
 997                 if (in_array($item['network'], [NETWORK_DFRN, NETWORK_DIASPORA])) {
 998                         $condition = ['guid' => $item['guid'], 'uid' => $item['uid']];
 999                         if (dba::exists('item', $condition)) {
1000                                 logger('duplicated item with the same guid found. '.print_r($item,true));
1001                                 return 0;
1002                         }
1003                 } else {
1004                         // Check for an existing post with the same content. There seems to be a problem with OStatus.
1005                         $condition = ["`body` = ? AND `network` = ? AND `created` = ? AND `contact-id` = ? AND `uid` = ?",
1006                                         $item['body'], $item['network'], $item['created'], $item['contact-id'], $item['uid']];
1007                         if (dba::exists('item', $condition)) {
1008                                 logger('duplicated item with the same body found. '.print_r($item,true));
1009                                 return 0;
1010                         }
1011                 }
1012
1013                 // Is this item available in the global items (with uid=0)?
1014                 if ($item["uid"] == 0) {
1015                         $item["global"] = true;
1016
1017                         // Set the global flag on all items if this was a global item entry
1018                         dba::update('item', ['global' => true], ['uri' => $item["uri"]]);
1019                 } else {
1020                         $item["global"] = dba::exists('item', ['uid' => 0, 'uri' => $item["uri"]]);
1021                 }
1022
1023                 // ACL settings
1024                 if (strlen($allow_cid) || strlen($allow_gid) || strlen($deny_cid) || strlen($deny_gid)) {
1025                         $private = 1;
1026                 } else {
1027                         $private = $item['private'];
1028                 }
1029
1030                 $item["allow_cid"] = $allow_cid;
1031                 $item["allow_gid"] = $allow_gid;
1032                 $item["deny_cid"] = $deny_cid;
1033                 $item["deny_gid"] = $deny_gid;
1034                 $item["private"] = $private;
1035                 $item["deleted"] = $parent_deleted;
1036
1037                 // Fill the cache field
1038                 put_item_in_cache($item);
1039
1040                 if ($notify) {
1041                         Addon::callHooks('post_local', $item);
1042                 } else {
1043                         Addon::callHooks('post_remote', $item);
1044                 }
1045
1046                 // This array field is used to trigger some automatic reactions
1047                 // It is mainly used in the "post_local" hook.
1048                 unset($item['api_source']);
1049
1050                 if (x($item, 'cancel')) {
1051                         logger('post cancelled by addon.');
1052                         return 0;
1053                 }
1054
1055                 /*
1056                  * Check for already added items.
1057                  * There is a timing issue here that sometimes creates double postings.
1058                  * An unique index would help - but the limitations of MySQL (maximum size of index values) prevent this.
1059                  */
1060                 if ($item["uid"] == 0) {
1061                         if (dba::exists('item', ['uri' => trim($item['uri']), 'uid' => 0])) {
1062                                 logger('Global item already stored. URI: '.$item['uri'].' on network '.$item['network'], LOGGER_DEBUG);
1063                                 return 0;
1064                         }
1065                 }
1066
1067                 logger('' . print_r($item,true), LOGGER_DATA);
1068
1069                 dba::transaction();
1070                 $ret = dba::insert('item', $item);
1071
1072                 // When the item was successfully stored we fetch the ID of the item.
1073                 if (DBM::is_result($ret)) {
1074                         $current_post = dba::lastInsertId();
1075                 } else {
1076                         // This can happen - for example - if there are locking timeouts.
1077                         dba::rollback();
1078
1079                         // Store the data into a spool file so that we can try again later.
1080
1081                         // At first we restore the Diaspora signature that we removed above.
1082                         if (isset($encoded_signature)) {
1083                                 $item['dsprsig'] = $encoded_signature;
1084                         }
1085
1086                         // Now we store the data in the spool directory
1087                         // We use "microtime" to keep the arrival order and "mt_rand" to avoid duplicates
1088                         $file = 'item-'.round(microtime(true) * 10000).'-'.mt_rand().'.msg';
1089
1090                         $spoolpath = get_spoolpath();
1091                         if ($spoolpath != "") {
1092                                 $spool = $spoolpath.'/'.$file;
1093                                 file_put_contents($spool, json_encode($item));
1094                                 logger("Item wasn't stored - Item was spooled into file ".$file, LOGGER_DEBUG);
1095                         }
1096                         return 0;
1097                 }
1098
1099                 if ($current_post == 0) {
1100                         // This is one of these error messages that never should occur.
1101                         logger("couldn't find created item - we better quit now.");
1102                         dba::rollback();
1103                         return 0;
1104                 }
1105
1106                 // How much entries have we created?
1107                 // We wouldn't need this query when we could use an unique index - but MySQL has length problems with them.
1108                 $entries = dba::count('item', ['uri' => $item['uri'], 'uid' => $item['uid'], 'network' => $item['network']]);
1109
1110                 if ($entries > 1) {
1111                         // There are duplicates. We delete our just created entry.
1112                         logger('Duplicated post occurred. uri = ' . $item['uri'] . ' uid = ' . $item['uid']);
1113
1114                         // Yes, we could do a rollback here - but we are having many users with MyISAM.
1115                         dba::delete('item', ['id' => $current_post]);
1116                         dba::commit();
1117                         return 0;
1118                 } elseif ($entries == 0) {
1119                         // This really should never happen since we quit earlier if there were problems.
1120                         logger("Something is terribly wrong. We haven't found our created entry.");
1121                         dba::rollback();
1122                         return 0;
1123                 }
1124
1125                 logger('created item '.$current_post);
1126                 self::updateContact($item);
1127
1128                 if (!$parent_id || ($item['parent-uri'] === $item['uri'])) {
1129                         $parent_id = $current_post;
1130                 }
1131
1132                 // Set parent id
1133                 dba::update('item', ['parent' => $parent_id], ['id' => $current_post]);
1134
1135                 $item['id'] = $current_post;
1136                 $item['parent'] = $parent_id;
1137
1138                 // update the commented timestamp on the parent
1139                 // Only update "commented" if it is really a comment
1140                 if (($item['verb'] == ACTIVITY_POST) || !Config::get("system", "like_no_comment")) {
1141                         dba::update('item', ['commented' => DateTimeFormat::utcNow(), 'changed' => DateTimeFormat::utcNow()], ['id' => $parent_id]);
1142                 } else {
1143                         dba::update('item', ['changed' => DateTimeFormat::utcNow()], ['id' => $parent_id]);
1144                 }
1145
1146                 if ($dsprsig) {
1147                         /*
1148                          * Friendica servers lower than 3.4.3-2 had double encoded the signature ...
1149                          * We can check for this condition when we decode and encode the stuff again.
1150                          */
1151                         if (base64_encode(base64_decode(base64_decode($dsprsig->signature))) == base64_decode($dsprsig->signature)) {
1152                                 $dsprsig->signature = base64_decode($dsprsig->signature);
1153                                 logger("Repaired double encoded signature from handle ".$dsprsig->signer, LOGGER_DEBUG);
1154                         }
1155
1156                         dba::insert('sign', ['iid' => $current_post, 'signed_text' => $dsprsig->signed_text,
1157                                                 'signature' => $dsprsig->signature, 'signer' => $dsprsig->signer]);
1158                 }
1159
1160                 if (!empty($diaspora_signed_text)) {
1161                         // Formerly we stored the signed text, the signature and the author in different fields.
1162                         // We now store the raw data so that we are more flexible.
1163                         dba::insert('sign', ['iid' => $current_post, 'signed_text' => $diaspora_signed_text]);
1164                 }
1165
1166                 $deleted = self::tagDeliver($item['uid'], $current_post);
1167
1168                 /*
1169                  * current post can be deleted if is for a community page and no mention are
1170                  * in it.
1171                  */
1172                 if (!$deleted && !$dontcache) {
1173                         $posted_item = dba::selectFirst('item', [], ['id' => $current_post]);
1174                         if (DBM::is_result($posted_item)) {
1175                                 if ($notify) {
1176                                         Addon::callHooks('post_local_end', $posted_item);
1177                                 } else {
1178                                         Addon::callHooks('post_remote_end', $posted_item);
1179                                 }
1180                         } else {
1181                                 logger('new item not found in DB, id ' . $current_post);
1182                         }
1183                 }
1184
1185                 if ($item['parent-uri'] === $item['uri']) {
1186                         self::addThread($current_post);
1187                 } else {
1188                         self::updateThread($parent_id);
1189                 }
1190
1191                 dba::commit();
1192
1193                 /*
1194                  * Due to deadlock issues with the "term" table we are doing these steps after the commit.
1195                  * This is not perfect - but a workable solution until we found the reason for the problem.
1196                  */
1197                 Term::insertFromTagFieldByItemId($current_post);
1198                 Term::insertFromFileFieldByItemId($current_post);
1199
1200                 if ($item['parent-uri'] === $item['uri']) {
1201                         self::addShadow($current_post);
1202                 } else {
1203                         self::addShadowPost($current_post);
1204                 }
1205
1206                 check_user_notification($current_post);
1207
1208                 if ($notify) {
1209                         Worker::add(['priority' => $priority, 'dont_fork' => true], "Notifier", $notify_type, $current_post);
1210                 } elseif (!empty($parent) && $parent['origin']) {
1211                         Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], "Notifier", "comment-import", $current_post);
1212                 }
1213
1214                 return $current_post;
1215         }
1216
1217         /**
1218          * @brief Distributes public items to the receivers
1219          *
1220          * @param integer $itemid      Item ID that should be added
1221          * @param string  $signed_text Original text (for Diaspora signatures), JSON encoded.
1222          */
1223         public static function distribute($itemid, $signed_text = '')
1224         {
1225                 $condition = ["`id` IN (SELECT `parent` FROM `item` WHERE `id` = ?)", $itemid];
1226                 $parent = dba::selectFirst('item', ['owner-id'], $condition);
1227                 if (!DBM::is_result($parent)) {
1228                         return;
1229                 }
1230
1231                 // Only distribute public items from native networks
1232                 $condition = ['id' => $itemid, 'uid' => 0,
1233                         'network' => [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""],
1234                         'visible' => true, 'deleted' => false, 'moderated' => false, 'private' => false];
1235                 $item = dba::selectFirst('item', [], ['id' => $itemid]);
1236                 if (!DBM::is_result($item)) {
1237                         return;
1238                 }
1239
1240                 unset($item['id']);
1241                 unset($item['parent']);
1242                 unset($item['mention']);
1243                 unset($item['wall']);
1244                 unset($item['origin']);
1245                 unset($item['starred']);
1246                 unset($item['rendered-hash']);
1247                 unset($item['rendered-html']);
1248
1249                 $users = [];
1250
1251                 $condition = ["`nurl` IN (SELECT `nurl` FROM `contact` WHERE `id` = ?) AND `uid` != 0 AND NOT `blocked` AND `rel` IN (?, ?)",
1252                         $parent['owner-id'], CONTACT_IS_SHARING,  CONTACT_IS_FRIEND];
1253                 $contacts = dba::select('contact', ['uid'], $condition);
1254                 while ($contact = dba::fetch($contacts)) {
1255                         $users[$contact['uid']] = $contact['uid'];
1256                 }
1257
1258                 $origin_uid = 0;
1259
1260                 if ($item['uri'] != $item['parent-uri']) {
1261                         $parents = dba::select('item', ['uid', 'origin'], ["`uri` = ? AND `uid` != 0", $item['parent-uri']]);
1262                         while ($parent = dba::fetch($parents)) {
1263                                 $users[$parent['uid']] = $parent['uid'];
1264                                 if ($parent['origin'] && !$item['origin']) {
1265                                         $origin_uid = $parent['uid'];
1266                                 }
1267                         }
1268                 }
1269
1270                 foreach ($users as $uid) {
1271                         if ($origin_uid == $uid) {
1272                                 $item['diaspora_signed_text'] = $signed_text;
1273                         }
1274                         self::storeForUser($itemid, $item, $uid);
1275                 }
1276         }
1277
1278         /**
1279          * @brief Store public items for the receivers
1280          *
1281          * @param integer $itemid Item ID that should be added
1282          * @param array   $item   The item entry that will be stored
1283          * @param integer $uid    The user that will receive the item entry
1284          */
1285         private static function storeForUser($itemid, $item, $uid)
1286         {
1287                 $item['uid'] = $uid;
1288                 $item['origin'] = 0;
1289                 $item['wall'] = 0;
1290                 if ($item['uri'] == $item['parent-uri']) {
1291                         $item['contact-id'] = Contact::getIdForURL($item['owner-link'], $uid);
1292                 } else {
1293                         $item['contact-id'] = Contact::getIdForURL($item['author-link'], $uid);
1294                 }
1295
1296                 if (empty($item['contact-id'])) {
1297                         $self = dba::selectFirst('contact', ['id'], ['self' => true, 'uid' => $uid]);
1298                         if (!DBM::is_result($self)) {
1299                                 return;
1300                         }
1301                         $item['contact-id'] = $self['id'];
1302                 }
1303
1304                 if (in_array($item['type'], ["net-comment", "wall-comment"])) {
1305                         $item['type'] = 'remote-comment';
1306                 } elseif ($item['type'] == 'wall') {
1307                         $item['type'] = 'remote';
1308                 }
1309
1310                 /// @todo Handling of "event-id"
1311
1312                 $notify = false;
1313                 if ($item['uri'] == $item['parent-uri']) {
1314                         $contact = dba::selectFirst('contact', [], ['id' => $item['contact-id'], 'self' => false]);
1315                         if (DBM::is_result($contact)) {
1316                                 $notify = self::isRemoteSelf($contact, $item);
1317                         }
1318                 }
1319
1320                 $distributed = self::insert($item, false, $notify, true);
1321
1322                 if (!$distributed) {
1323                         logger("Distributed public item " . $itemid . " for user " . $uid . " wasn't stored", LOGGER_DEBUG);
1324                 } else {
1325                         logger("Distributed public item " . $itemid . " for user " . $uid . " with id " . $distributed, LOGGER_DEBUG);
1326                 }
1327         }
1328
1329         /**
1330          * @brief Add a shadow entry for a given item id that is a thread starter
1331          *
1332          * We store every public item entry additionally with the user id "0".
1333          * This is used for the community page and for the search.
1334          * It is planned that in the future we will store public item entries only once.
1335          *
1336          * @param integer $itemid Item ID that should be added
1337          */
1338         public static function addShadow($itemid)
1339         {
1340                 $fields = ['uid', 'private', 'moderated', 'visible', 'deleted', 'network'];
1341                 $condition = ['id' => $itemid, 'parent' => [0, $itemid]];
1342                 $item = dba::selectFirst('item', $fields, $condition);
1343
1344                 if (!DBM::is_result($item)) {
1345                         return;
1346                 }
1347
1348                 // is it already a copy?
1349                 if (($itemid == 0) || ($item['uid'] == 0)) {
1350                         return;
1351                 }
1352
1353                 // Is it a visible public post?
1354                 if (!$item["visible"] || $item["deleted"] || $item["moderated"] || $item["private"]) {
1355                         return;
1356                 }
1357
1358                 // is it an entry from a connector? Only add an entry for natively connected networks
1359                 if (!in_array($item["network"], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""])) {
1360                         return;
1361                 }
1362
1363                 $item = dba::selectFirst('item', [], ['id' => $itemid]);
1364
1365                 if (DBM::is_result($item) && ($item["allow_cid"] == '') && ($item["allow_gid"] == '') &&
1366                         ($item["deny_cid"] == '') && ($item["deny_gid"] == '')) {
1367
1368                         if (!dba::exists('item', ['uri' => $item['uri'], 'uid' => 0])) {
1369                                 // Preparing public shadow (removing user specific data)
1370                                 $item['uid'] = 0;
1371                                 unset($item['id']);
1372                                 unset($item['parent']);
1373                                 unset($item['wall']);
1374                                 unset($item['mention']);
1375                                 unset($item['origin']);
1376                                 unset($item['starred']);
1377                                 unset($item['rendered-hash']);
1378                                 unset($item['rendered-html']);
1379                                 if ($item['uri'] == $item['parent-uri']) {
1380                                         $item['contact-id'] = Contact::getIdForURL($item['owner-link']);
1381                                 } else {
1382                                         $item['contact-id'] = Contact::getIdForURL($item['author-link']);
1383                                 }
1384
1385                                 if (in_array($item['type'], ["net-comment", "wall-comment"])) {
1386                                         $item['type'] = 'remote-comment';
1387                                 } elseif ($item['type'] == 'wall') {
1388                                         $item['type'] = 'remote';
1389                                 }
1390
1391                                 $public_shadow = self::insert($item, false, false, true);
1392
1393                                 logger("Stored public shadow for thread ".$itemid." under id ".$public_shadow, LOGGER_DEBUG);
1394                         }
1395                 }
1396         }
1397
1398         /**
1399          * @brief Add a shadow entry for a given item id that is a comment
1400          *
1401          * This function does the same like the function above - but for comments
1402          *
1403          * @param integer $itemid Item ID that should be added
1404          */
1405         public static function addShadowPost($itemid)
1406         {
1407                 $item = dba::selectFirst('item', [], ['id' => $itemid]);
1408                 if (!DBM::is_result($item)) {
1409                         return;
1410                 }
1411
1412                 // Is it a toplevel post?
1413                 if ($item['id'] == $item['parent']) {
1414                         self::addShadow($itemid);
1415                         return;
1416                 }
1417
1418                 // Is this a shadow entry?
1419                 if ($item['uid'] == 0) {
1420                         return;
1421                 }
1422
1423                 // Is there a shadow parent?
1424                 if (!dba::exists('item', ['uri' => $item['parent-uri'], 'uid' => 0])) {
1425                         return;
1426                 }
1427
1428                 // Is there already a shadow entry?
1429                 if (dba::exists('item', ['uri' => $item['uri'], 'uid' => 0])) {
1430                         return;
1431                 }
1432
1433                 // Save "origin" and "parent" state
1434                 $origin = $item['origin'];
1435                 $parent = $item['parent'];
1436
1437                 // Preparing public shadow (removing user specific data)
1438                 $item['uid'] = 0;
1439                 unset($item['id']);
1440                 unset($item['parent']);
1441                 unset($item['wall']);
1442                 unset($item['mention']);
1443                 unset($item['origin']);
1444                 unset($item['starred']);
1445                 unset($item['rendered-hash']);
1446                 unset($item['rendered-html']);
1447                 $item['contact-id'] = Contact::getIdForURL($item['author-link']);
1448
1449                 if (in_array($item['type'], ["net-comment", "wall-comment"])) {
1450                         $item['type'] = 'remote-comment';
1451                 } elseif ($item['type'] == 'wall') {
1452                         $item['type'] = 'remote';
1453                 }
1454
1455                 $public_shadow = self::insert($item, false, false, true);
1456
1457                 logger("Stored public shadow for comment ".$item['uri']." under id ".$public_shadow, LOGGER_DEBUG);
1458
1459                 // If this was a comment to a Diaspora post we don't get our comment back.
1460                 // This means that we have to distribute the comment by ourselves.
1461                 if ($origin && dba::exists('item', ['id' => $parent, 'network' => NETWORK_DIASPORA])) {
1462                         self::distribute($public_shadow);
1463                 }
1464         }
1465
1466          /**
1467          * Adds a "lang" specification in a "postopts" element of given $arr,
1468          * if possible and not already present.
1469          * Expects "body" element to exist in $arr.
1470          */
1471         private static function addLanguageInPostopts(&$item)
1472         {
1473                 $postopts = "";
1474
1475                 if (!empty($item['postopts'])) {
1476                         if (strstr($item['postopts'], 'lang=')) {
1477                                 // do not override
1478                                 return;
1479                         }
1480                         $postopts = $item['postopts'];
1481                 }
1482
1483                 $naked_body = Text\BBCode::toPlaintext($item['body'], false);
1484
1485                 $languages = (new Text_LanguageDetect())->detect($naked_body, 3);
1486
1487                 if (sizeof($languages) > 0) {
1488                         if ($postopts != '') {
1489                                 $postopts .= '&'; // arbitrary separator, to be reviewed
1490                         }
1491
1492                         $postopts .= 'lang=';
1493                         $sep = "";
1494
1495                         foreach ($languages as $language => $score) {
1496                                 $postopts .= $sep . $language . ";" . $score;
1497                                 $sep = ':';
1498                         }
1499                         $item['postopts'] = $postopts;
1500                 }
1501         }
1502
1503         /**
1504          * @brief Creates an unique guid out of a given uri
1505          *
1506          * @param string $uri uri of an item entry
1507          * @param string $host hostname for the GUID prefix
1508          * @return string unique guid
1509          */
1510         public static function guidFromUri($uri, $host)
1511         {
1512                 // Our regular guid routine is using this kind of prefix as well
1513                 // We have to avoid that different routines could accidentally create the same value
1514                 $parsed = parse_url($uri);
1515
1516                 // We use a hash of the hostname as prefix for the guid
1517                 $guid_prefix = hash("crc32", $host);
1518
1519                 // Remove the scheme to make sure that "https" and "http" doesn't make a difference
1520                 unset($parsed["scheme"]);
1521
1522                 // Glue it together to be able to make a hash from it
1523                 $host_id = implode("/", $parsed);
1524
1525                 // We could use any hash algorithm since it isn't a security issue
1526                 $host_hash = hash("ripemd128", $host_id);
1527
1528                 return $guid_prefix.$host_hash;
1529         }
1530
1531         /**
1532          * @brief Set "success_update" and "last-item" to the date of the last time we heard from this contact
1533          *
1534          * This can be used to filter for inactive contacts.
1535          * Only do this for public postings to avoid privacy problems, since poco data is public.
1536          * Don't set this value if it isn't from the owner (could be an author that we don't know)
1537          *
1538          * @param array $arr Contains the just posted item record
1539          */
1540         private static function updateContact($arr)
1541         {
1542                 // Unarchive the author
1543                 $contact = dba::selectFirst('contact', [], ['id' => $arr["author-id"]]);
1544                 if (DBM::is_result($contact)) {
1545                         Contact::unmarkForArchival($contact);
1546                 }
1547
1548                 // Unarchive the contact if it's not our own contact
1549                 $contact = dba::selectFirst('contact', [], ['id' => $arr["contact-id"], 'self' => false]);
1550                 if (DBM::is_result($contact)) {
1551                         Contact::unmarkForArchival($contact);
1552                 }
1553
1554                 $update = (!$arr['private'] && (($arr["author-link"] === $arr["owner-link"]) || ($arr["parent-uri"] === $arr["uri"])));
1555
1556                 // Is it a forum? Then we don't care about the rules from above
1557                 if (!$update && ($arr["network"] == NETWORK_DFRN) && ($arr["parent-uri"] === $arr["uri"])) {
1558                         if (dba::exists('contact', ['id' => $arr['contact-id'], 'forum' => true])) {
1559                                 $update = true;
1560                         }
1561                 }
1562
1563                 if ($update) {
1564                         dba::update('contact', ['success_update' => $arr['received'], 'last-item' => $arr['received']],
1565                                 ['id' => $arr['contact-id']]);
1566                 }
1567                 // Now do the same for the system wide contacts with uid=0
1568                 if (!$arr['private']) {
1569                         dba::update('contact', ['success_update' => $arr['received'], 'last-item' => $arr['received']],
1570                                 ['id' => $arr['owner-id']]);
1571
1572                         if ($arr['owner-id'] != $arr['author-id']) {
1573                                 dba::update('contact', ['success_update' => $arr['received'], 'last-item' => $arr['received']],
1574                                         ['id' => $arr['author-id']]);
1575                         }
1576                 }
1577         }
1578
1579         public static function setHashtags(&$item)
1580         {
1581
1582                 $tags = get_tags($item["body"]);
1583
1584                 // No hashtags?
1585                 if (!count($tags)) {
1586                         return false;
1587                 }
1588
1589                 // This sorting is important when there are hashtags that are part of other hashtags
1590                 // Otherwise there could be problems with hashtags like #test and #test2
1591                 rsort($tags);
1592
1593                 $URLSearchString = "^\[\]";
1594
1595                 // All hashtags should point to the home server if "local_tags" is activated
1596                 if (Config::get('system', 'local_tags')) {
1597                         $item["body"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1598                                         "#[url=".System::baseUrl()."/search?tag=$2]$2[/url]", $item["body"]);
1599
1600                         $item["tag"] = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1601                                         "#[url=".System::baseUrl()."/search?tag=$2]$2[/url]", $item["tag"]);
1602                 }
1603
1604                 // mask hashtags inside of url, bookmarks and attachments to avoid urls in urls
1605                 $item["body"] = preg_replace_callback("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1606                         function ($match) {
1607                                 return ("[url=" . str_replace("#", "&num;", $match[1]) . "]" . str_replace("#", "&num;", $match[2]) . "[/url]");
1608                         }, $item["body"]);
1609
1610                 $item["body"] = preg_replace_callback("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism",
1611                         function ($match) {
1612                                 return ("[bookmark=" . str_replace("#", "&num;", $match[1]) . "]" . str_replace("#", "&num;", $match[2]) . "[/bookmark]");
1613                         }, $item["body"]);
1614
1615                 $item["body"] = preg_replace_callback("/\[attachment (.*)\](.*?)\[\/attachment\]/ism",
1616                         function ($match) {
1617                                 return ("[attachment " . str_replace("#", "&num;", $match[1]) . "]" . $match[2] . "[/attachment]");
1618                         }, $item["body"]);
1619
1620                 // Repair recursive urls
1621                 $item["body"] = preg_replace("/&num;\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1622                                 "&num;$2", $item["body"]);
1623
1624                 foreach ($tags as $tag) {
1625                         if ((strpos($tag, '#') !== 0) || strpos($tag, '[url=')) {
1626                                 continue;
1627                         }
1628
1629                         $basetag = str_replace('_',' ',substr($tag,1));
1630
1631                         $newtag = '#[url=' . System::baseUrl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]';
1632
1633                         $item["body"] = str_replace($tag, $newtag, $item["body"]);
1634
1635                         if (!stristr($item["tag"], "/search?tag=" . $basetag . "]" . $basetag . "[/url]")) {
1636                                 if (strlen($item["tag"])) {
1637                                         $item["tag"] = ','.$item["tag"];
1638                                 }
1639                                 $item["tag"] = $newtag.$item["tag"];
1640                         }
1641                 }
1642
1643                 // Convert back the masked hashtags
1644                 $item["body"] = str_replace("&num;", "#", $item["body"]);
1645         }
1646
1647         public static function getGuidById($id)
1648         {
1649                 $item = dba::selectFirst('item', ['guid'], ['id' => $id]);
1650                 if (DBM::is_result($item)) {
1651                         return $item['guid'];
1652                 } else {
1653                         return '';
1654                 }
1655         }
1656
1657         public static function getIdAndNickByGuid($guid, $uid = 0)
1658         {
1659                 $nick = "";
1660                 $id = 0;
1661
1662                 if ($uid == 0) {
1663                         $uid == local_user();
1664                 }
1665
1666                 // Does the given user have this item?
1667                 if ($uid) {
1668                         $item = dba::fetch_first("SELECT `item`.`id`, `user`.`nickname` FROM `item`
1669                                 INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1670                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
1671                                         AND `item`.`guid` = ? AND `item`.`uid` = ?", $guid, $uid);
1672                         if (DBM::is_result($item)) {
1673                                 $id = $item["id"];
1674                                 $nick = $item["nickname"];
1675                         }
1676                 }
1677
1678                 // Or is it anywhere on the server?
1679                 if ($nick == "") {
1680                         $item = dba::fetch_first("SELECT `item`.`id`, `user`.`nickname` FROM `item`
1681                                 INNER JOIN `user` ON `user`.`uid` = `item`.`uid`
1682                                 WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
1683                                         AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
1684                                         AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
1685                                         AND NOT `item`.`private` AND `item`.`wall`
1686                                         AND `item`.`guid` = ?", $guid);
1687                         if (DBM::is_result($item)) {
1688                                 $id = $item["id"];
1689                                 $nick = $item["nickname"];
1690                         }
1691                 }
1692                 return ["nick" => $nick, "id" => $id];
1693         }
1694
1695         /**
1696          * look for mention tags and setup a second delivery chain for forum/community posts if appropriate
1697          * @param int $uid
1698          * @param int $item_id
1699          * @return bool true if item was deleted, else false
1700          */
1701         private static function tagDeliver($uid, $item_id)
1702         {
1703                 $mention = false;
1704
1705                 $user = dba::selectFirst('user', [], ['uid' => $uid]);
1706                 if (!DBM::is_result($user)) {
1707                         return;
1708                 }
1709
1710                 $community_page = (($user['page-flags'] == PAGE_COMMUNITY) ? true : false);
1711                 $prvgroup = (($user['page-flags'] == PAGE_PRVGROUP) ? true : false);
1712
1713                 $item = dba::selectFirst('item', [], ['id' => $item_id]);
1714                 if (!DBM::is_result($item)) {
1715                         return;
1716                 }
1717
1718                 $link = normalise_link(System::baseUrl() . '/profile/' . $user['nickname']);
1719
1720                 /*
1721                  * Diaspora uses their own hardwired link URL in @-tags
1722                  * instead of the one we supply with webfinger
1723                  */
1724                 $dlink = normalise_link(System::baseUrl() . '/u/' . $user['nickname']);
1725
1726                 $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism', $item['body'], $matches, PREG_SET_ORDER);
1727                 if ($cnt) {
1728                         foreach ($matches as $mtch) {
1729                                 if (link_compare($link, $mtch[1]) || link_compare($dlink, $mtch[1])) {
1730                                         $mention = true;
1731                                         logger('mention found: ' . $mtch[2]);
1732                                 }
1733                         }
1734                 }
1735
1736                 if (!$mention) {
1737                         if (($community_page || $prvgroup) &&
1738                                   !$item['wall'] && !$item['origin'] && ($item['id'] == $item['parent'])) {
1739                                 // mmh.. no mention.. community page or private group... no wall.. no origin.. top-post (not a comment)
1740                                 // delete it!
1741                                 logger("no-mention top-level post to community or private group. delete.");
1742                                 dba::delete('item', ['id' => $item_id]);
1743                                 return true;
1744                         }
1745                         return;
1746                 }
1747
1748                 $arr = ['item' => $item, 'user' => $user];
1749
1750                 Addon::callHooks('tagged', $arr);
1751
1752                 if (!$community_page && !$prvgroup) {
1753                         return;
1754                 }
1755
1756                 /*
1757                  * tgroup delivery - setup a second delivery chain
1758                  * prevent delivery looping - only proceed
1759                  * if the message originated elsewhere and is a top-level post
1760                  */
1761                 if ($item['wall'] || $item['origin'] || ($item['id'] != $item['parent'])) {
1762                         return;
1763                 }
1764
1765                 // now change this copy of the post to a forum head message and deliver to all the tgroup members
1766                 $self = dba::selectFirst('contact', ['id', 'name', 'url', 'thumb'], ['uid' => $uid, 'self' => true]);
1767                 if (!DBM::is_result($self)) {
1768                         return;
1769                 }
1770
1771                 $owner_id = Contact::getIdForURL($self['url']);
1772
1773                 // also reset all the privacy bits to the forum default permissions
1774
1775                 $private = ($user['allow_cid'] || $user['allow_gid'] || $user['deny_cid'] || $user['deny_gid']) ? 1 : 0;
1776
1777                 $forum_mode = ($prvgroup ? 2 : 1);
1778
1779                 $fields = ['wall' => true, 'origin' => true, 'forum_mode' => $forum_mode, 'contact-id' => $self['id'],
1780                         'owner-id' => $owner_id, 'owner-link' => $self['url'], 'private' => $private, 'allow_cid' => $user['allow_cid'],
1781                         'allow_gid' => $user['allow_gid'], 'deny_cid' => $user['deny_cid'], 'deny_gid' => $user['deny_gid']];
1782                 dba::update('item', $fields, ['id' => $item_id]);
1783
1784                 self::updateThread($item_id);
1785
1786                 Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], 'Notifier', 'tgroup', $item_id);
1787         }
1788
1789         public static function isRemoteSelf($contact, &$datarray)
1790         {
1791                 $a = get_app();
1792
1793                 if (!$contact['remote_self']) {
1794                         return false;
1795                 }
1796
1797                 // Prevent the forwarding of posts that are forwarded
1798                 if ($datarray["extid"] == NETWORK_DFRN) {
1799                         logger('Already forwarded', LOGGER_DEBUG);
1800                         return false;
1801                 }
1802
1803                 // Prevent to forward already forwarded posts
1804                 if ($datarray["app"] == $a->get_hostname()) {
1805                         logger('Already forwarded (second test)', LOGGER_DEBUG);
1806                         return false;
1807                 }
1808
1809                 // Only forward posts
1810                 if ($datarray["verb"] != ACTIVITY_POST) {
1811                         logger('No post', LOGGER_DEBUG);
1812                         return false;
1813                 }
1814
1815                 if (($contact['network'] != NETWORK_FEED) && $datarray['private']) {
1816                         logger('Not public', LOGGER_DEBUG);
1817                         return false;
1818                 }
1819
1820                 $datarray2 = $datarray;
1821                 logger('remote-self start - Contact '.$contact['url'].' - '.$contact['remote_self'].' Item '.print_r($datarray, true), LOGGER_DEBUG);
1822                 if ($contact['remote_self'] == 2) {
1823                         $self = dba::selectFirst('contact', ['id', 'name', 'url', 'thumb'],
1824                                         ['uid' => $contact['uid'], 'self' => true]);
1825                         if (DBM::is_result($self)) {
1826                                 $datarray['contact-id'] = $self["id"];
1827
1828                                 $datarray['owner-name'] = $self["name"];
1829                                 $datarray['owner-link'] = $self["url"];
1830                                 $datarray['owner-avatar'] = $self["thumb"];
1831
1832                                 $datarray['author-name']   = $datarray['owner-name'];
1833                                 $datarray['author-link']   = $datarray['owner-link'];
1834                                 $datarray['author-avatar'] = $datarray['owner-avatar'];
1835
1836                                 unset($datarray['created']);
1837                                 unset($datarray['edited']);
1838
1839                                 unset($datarray['network']);
1840                                 unset($datarray['owner-id']);
1841                                 unset($datarray['author-id']);
1842                         }
1843
1844                         if ($contact['network'] != NETWORK_FEED) {
1845                                 $datarray["guid"] = get_guid(32);
1846                                 unset($datarray["plink"]);
1847                                 $datarray["uri"] = item_new_uri($a->get_hostname(), $contact['uid'], $datarray["guid"]);
1848                                 $datarray["parent-uri"] = $datarray["uri"];
1849                                 $datarray["thr-parent"] = $datarray["uri"];
1850                                 $datarray["extid"] = NETWORK_DFRN;
1851                                 $urlpart = parse_url($datarray2['author-link']);
1852                                 $datarray["app"] = $urlpart["host"];
1853                         } else {
1854                                 $datarray['private'] = 0;
1855                         }
1856                 }
1857
1858                 if ($contact['network'] != NETWORK_FEED) {
1859                         // Store the original post
1860                         $result = self::insert($datarray2, false, false);
1861                         logger('remote-self post original item - Contact '.$contact['url'].' return '.$result.' Item '.print_r($datarray2, true), LOGGER_DEBUG);
1862                 } else {
1863                         $datarray["app"] = "Feed";
1864                         $result = true;
1865                 }
1866
1867                 // Trigger automatic reactions for addons
1868                 $datarray['api_source'] = true;
1869
1870                 // We have to tell the hooks who we are - this really should be improved
1871                 $_SESSION["authenticated"] = true;
1872                 $_SESSION["uid"] = $contact['uid'];
1873
1874                 return $result;
1875         }
1876
1877         /**
1878          *
1879          * @param string $s
1880          * @param int    $uid
1881          * @param array  $item
1882          * @param int    $cid
1883          * @return string
1884          */
1885         public static function fixPrivatePhotos($s, $uid, $item = null, $cid = 0)
1886         {
1887                 if (Config::get('system', 'disable_embedded')) {
1888                         return $s;
1889                 }
1890
1891                 logger('check for photos', LOGGER_DEBUG);
1892                 $site = substr(System::baseUrl(), strpos(System::baseUrl(), '://'));
1893
1894                 $orig_body = $s;
1895                 $new_body = '';
1896
1897                 $img_start = strpos($orig_body, '[img');
1898                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
1899                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
1900
1901                 while (($img_st_close !== false) && ($img_len !== false)) {
1902                         $img_st_close++; // make it point to AFTER the closing bracket
1903                         $image = substr($orig_body, $img_start + $img_st_close, $img_len);
1904
1905                         logger('found photo ' . $image, LOGGER_DEBUG);
1906
1907                         if (stristr($image, $site . '/photo/')) {
1908                                 // Only embed locally hosted photos
1909                                 $replace = false;
1910                                 $i = basename($image);
1911                                 $i = str_replace(['.jpg', '.png', '.gif'], ['', '', ''], $i);
1912                                 $x = strpos($i, '-');
1913
1914                                 if ($x) {
1915                                         $res = substr($i, $x + 1);
1916                                         $i = substr($i, 0, $x);
1917                                         $fields = ['data', 'type', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid'];
1918                                         $photo = dba::selectFirst('photo', $fields, ['resource-id' => $i, 'scale' => $res, 'uid' => $uid]);
1919                                         if (DBM::is_result($photo)) {
1920                                                 /*
1921                                                  * Check to see if we should replace this photo link with an embedded image
1922                                                  * 1. No need to do so if the photo is public
1923                                                  * 2. If there's a contact-id provided, see if they're in the access list
1924                                                  *    for the photo. If so, embed it.
1925                                                  * 3. Otherwise, if we have an item, see if the item permissions match the photo
1926                                                  *    permissions, regardless of order but first check to see if they're an exact
1927                                                  *    match to save some processing overhead.
1928                                                  */
1929                                                 if (self::hasPermissions($photo)) {
1930                                                         if ($cid) {
1931                                                                 $recips = self::enumeratePermissions($photo);
1932                                                                 if (in_array($cid, $recips)) {
1933                                                                         $replace = true;
1934                                                                 }
1935                                                         } elseif ($item) {
1936                                                                 if (self::samePermissions($item, $photo)) {
1937                                                                         $replace = true;
1938                                                                 }
1939                                                         }
1940                                                 }
1941                                                 if ($replace) {
1942                                                         $data = $photo['data'];
1943                                                         $type = $photo['type'];
1944
1945                                                         // If a custom width and height were specified, apply before embedding
1946                                                         if (preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
1947                                                                 logger('scaling photo', LOGGER_DEBUG);
1948
1949                                                                 $width = intval($match[1]);
1950                                                                 $height = intval($match[2]);
1951
1952                                                                 $Image = new Image($data, $type);
1953                                                                 if ($Image->isValid()) {
1954                                                                         $Image->scaleDown(max($width, $height));
1955                                                                         $data = $Image->asString();
1956                                                                         $type = $Image->getType();
1957                                                                 }
1958                                                         }
1959
1960                                                         logger('replacing photo', LOGGER_DEBUG);
1961                                                         $image = 'data:' . $type . ';base64,' . base64_encode($data);
1962                                                         logger('replaced: ' . $image, LOGGER_DATA);
1963                                                 }
1964                                         }
1965                                 }
1966                         }
1967
1968                         $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
1969                         $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
1970                         if ($orig_body === false) {
1971                                 $orig_body = '';
1972                         }
1973
1974                         $img_start = strpos($orig_body, '[img');
1975                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
1976                         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
1977                 }
1978
1979                 $new_body = $new_body . $orig_body;
1980
1981                 return $new_body;
1982         }
1983
1984         private static function hasPermissions($obj)
1985         {
1986                 return (
1987                         (
1988                                 x($obj, 'allow_cid')
1989                         ) || (
1990                                 x($obj, 'allow_gid')
1991                         ) || (
1992                                 x($obj, 'deny_cid')
1993                         ) || (
1994                                 x($obj, 'deny_gid')
1995                         )
1996                 );
1997         }
1998
1999         private static function samePermissions($obj1, $obj2)
2000         {
2001                 // first part is easy. Check that these are exactly the same.
2002                 if (($obj1['allow_cid'] == $obj2['allow_cid'])
2003                         && ($obj1['allow_gid'] == $obj2['allow_gid'])
2004                         && ($obj1['deny_cid'] == $obj2['deny_cid'])
2005                         && ($obj1['deny_gid'] == $obj2['deny_gid'])) {
2006                         return true;
2007                 }
2008
2009                 // This is harder. Parse all the permissions and compare the resulting set.
2010                 $recipients1 = self::enumeratePermissions($obj1);
2011                 $recipients2 = self::enumeratePermissions($obj2);
2012                 sort($recipients1);
2013                 sort($recipients2);
2014
2015                 /// @TODO Comparison of arrays, maybe use array_diff_assoc() here?
2016                 return ($recipients1 == $recipients2);
2017         }
2018
2019         // returns an array of contact-ids that are allowed to see this object
2020         private static function enumeratePermissions($obj)
2021         {
2022                 $allow_people = expand_acl($obj['allow_cid']);
2023                 $allow_groups = Group::expand(expand_acl($obj['allow_gid']));
2024                 $deny_people  = expand_acl($obj['deny_cid']);
2025                 $deny_groups  = Group::expand(expand_acl($obj['deny_gid']));
2026                 $recipients   = array_unique(array_merge($allow_people, $allow_groups));
2027                 $deny         = array_unique(array_merge($deny_people, $deny_groups));
2028                 $recipients   = array_diff($recipients, $deny);
2029                 return $recipients;
2030         }
2031
2032         public static function getFeedTags($item)
2033         {
2034                 $ret = [];
2035                 $matches = false;
2036                 $cnt = preg_match_all('|\#\[url\=(.*?)\](.*?)\[\/url\]|', $item['tag'], $matches);
2037                 if ($cnt) {
2038                         for ($x = 0; $x < $cnt; $x ++) {
2039                                 if ($matches[1][$x]) {
2040                                         $ret[$matches[2][$x]] = ['#', $matches[1][$x], $matches[2][$x]];
2041                                 }
2042                         }
2043                 }
2044                 $matches = false;
2045                 $cnt = preg_match_all('|\@\[url\=(.*?)\](.*?)\[\/url\]|', $item['tag'], $matches);
2046                 if ($cnt) {
2047                         for ($x = 0; $x < $cnt; $x ++) {
2048                                 if ($matches[1][$x]) {
2049                                         $ret[] = ['@', $matches[1][$x], $matches[2][$x]];
2050                                 }
2051                         }
2052                 }
2053                 return $ret;
2054         }
2055
2056         public static function expire($uid, $days, $network = "", $force = false)
2057         {
2058                 if (!$uid || ($days < 1)) {
2059                         return;
2060                 }
2061
2062                 /*
2063                  * $expire_network_only = save your own wall posts
2064                  * and just expire conversations started by others
2065                  */
2066                 $expire_network_only = PConfig::get($uid,'expire', 'network_only');
2067                 $sql_extra = (intval($expire_network_only) ? " AND wall = 0 " : "");
2068
2069                 if ($network != "") {
2070                         $sql_extra .= sprintf(" AND network = '%s' ", dbesc($network));
2071
2072                         /*
2073                          * There is an index "uid_network_received" but not "uid_network_created"
2074                          * This avoids the creation of another index just for one purpose.
2075                          * And it doesn't really matter wether to look at "received" or "created"
2076                          */
2077                         $range = "AND `received` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
2078                 } else {
2079                         $range = "AND `created` < UTC_TIMESTAMP() - INTERVAL %d DAY ";
2080                 }
2081
2082                 $r = q("SELECT `file`, `resource-id`, `starred`, `type`, `id` FROM `item`
2083                         WHERE `uid` = %d $range
2084                         AND `id` = `parent`
2085                         $sql_extra
2086                         AND `deleted` = 0",
2087                         intval($uid),
2088                         intval($days)
2089                 );
2090
2091                 if (!DBM::is_result($r)) {
2092                         return;
2093                 }
2094
2095                 $expire_items = PConfig::get($uid, 'expire', 'items', 1);
2096
2097                 // Forcing expiring of items - but not notes and marked items
2098                 if ($force) {
2099                         $expire_items = true;
2100                 }
2101
2102                 $expire_notes = PConfig::get($uid, 'expire', 'notes', 1);
2103                 $expire_starred = PConfig::get($uid, 'expire', 'starred', 1);
2104                 $expire_photos = PConfig::get($uid, 'expire', 'photos', 0);
2105
2106                 logger('User '.$uid.': expire: # items=' . count($r). "; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos");
2107
2108                 foreach ($r as $item) {
2109
2110                         // don't expire filed items
2111
2112                         if (strpos($item['file'],'[') !== false) {
2113                                 continue;
2114                         }
2115
2116                         // Only expire posts, not photos and photo comments
2117
2118                         if ($expire_photos == 0 && strlen($item['resource-id'])) {
2119                                 continue;
2120                         } elseif ($expire_starred == 0 && intval($item['starred'])) {
2121                                 continue;
2122                         } elseif ($expire_notes == 0 && $item['type'] == 'note') {
2123                                 continue;
2124                         } elseif ($expire_items == 0 && $item['type'] != 'note') {
2125                                 continue;
2126                         }
2127
2128                         self::deleteById($item['id'], PRIORITY_LOW);
2129                 }
2130         }
2131
2132         public static function firstPostDate($uid, $wall = false)
2133         {
2134                 $condition = ['uid' => $uid, 'wall' => $wall, 'deleted' => false, 'visible' => true, 'moderated' => false];
2135                 $params = ['order' => ['created' => false]];
2136                 $thread = dba::selectFirst('thread', ['created'], $condition, $params);
2137                 if (DBM::is_result($thread)) {
2138                         return substr(DateTimeFormat::local($thread['created']), 0, 10);
2139                 }
2140                 return false;
2141         }
2142
2143         /**
2144          * @brief add/remove activity to an item
2145          *
2146          * Toggle activities as like,dislike,attend of an item
2147          *
2148          * @param string $item_id
2149          * @param string $verb
2150          *              Activity verb. One of
2151          *                      like, unlike, dislike, undislike, attendyes, unattendyes,
2152          *                      attendno, unattendno, attendmaybe, unattendmaybe
2153          * @hook 'post_local_end'
2154          *              array $arr
2155          *                      'post_id' => ID of posted item
2156          */
2157         public static function performLike($item_id, $verb)
2158         {
2159                 if (!local_user() && !remote_user()) {
2160                         return false;
2161                 }
2162
2163                 switch ($verb) {
2164                         case 'like':
2165                         case 'unlike':
2166                                 $bodyverb = L10n::t('%1$s likes %2$s\'s %3$s');
2167                                 $activity = ACTIVITY_LIKE;
2168                                 break;
2169                         case 'dislike':
2170                         case 'undislike':
2171                                 $bodyverb = L10n::t('%1$s doesn\'t like %2$s\'s %3$s');
2172                                 $activity = ACTIVITY_DISLIKE;
2173                                 break;
2174                         case 'attendyes':
2175                         case 'unattendyes':
2176                                 $bodyverb = L10n::t('%1$s is attending %2$s\'s %3$s');
2177                                 $activity = ACTIVITY_ATTEND;
2178                                 break;
2179                         case 'attendno':
2180                         case 'unattendno':
2181                                 $bodyverb = L10n::t('%1$s is not attending %2$s\'s %3$s');
2182                                 $activity = ACTIVITY_ATTENDNO;
2183                                 break;
2184                         case 'attendmaybe':
2185                         case 'unattendmaybe':
2186                                 $bodyverb = L10n::t('%1$s may attend %2$s\'s %3$s');
2187                                 $activity = ACTIVITY_ATTENDMAYBE;
2188                                 break;
2189                         default:
2190                                 logger('like: unknown verb ' . $verb . ' for item ' . $item_id);
2191                                 return false;
2192                 }
2193
2194                 // Enable activity toggling instead of on/off
2195                 $event_verb_flag = $activity === ACTIVITY_ATTEND || $activity === ACTIVITY_ATTENDNO || $activity === ACTIVITY_ATTENDMAYBE;
2196
2197                 logger('like: verb ' . $verb . ' item ' . $item_id);
2198
2199                 $item = dba::selectFirst('item', [], ['`id` = ? OR `uri` = ?', $item_id, $item_id]);
2200                 if (!DBM::is_result($item)) {
2201                         logger('like: unknown item ' . $item_id);
2202                         return false;
2203                 }
2204
2205                 $uid = $item['uid'];
2206                 if (($uid == 0) && local_user()) {
2207                         $uid = local_user();
2208                 }
2209
2210                 if (!can_write_wall($uid)) {
2211                         logger('like: unable to write on wall ' . $uid);
2212                         return false;
2213                 }
2214
2215                 // Retrieves the local post owner
2216                 $owner_self_contact = dba::selectFirst('contact', [], ['uid' => $uid, 'self' => true]);
2217                 if (!DBM::is_result($owner_self_contact)) {
2218                         logger('like: unknown owner ' . $uid);
2219                         return false;
2220                 }
2221
2222                 // Retrieve the current logged in user's public contact
2223                 $author_id = public_contact();
2224
2225                 $author_contact = dba::selectFirst('contact', [], ['id' => $author_id]);
2226                 if (!DBM::is_result($author_contact)) {
2227                         logger('like: unknown author ' . $author_id);
2228                         return false;
2229                 }
2230
2231                 // Contact-id is the uid-dependant author contact
2232                 if (local_user() == $uid) {
2233                         $item_contact_id = $owner_self_contact['id'];
2234                         $item_contact = $owner_self_contact;
2235                 } else {
2236                         $item_contact_id = Contact::getIdForURL($author_contact['url'], $uid, true);
2237                         $item_contact = dba::selectFirst('contact', [], ['id' => $item_contact_id]);
2238                         if (!DBM::is_result($item_contact)) {
2239                                 logger('like: unknown item contact ' . $item_contact_id);
2240                                 return false;
2241                         }
2242                 }
2243
2244                 // Look for an existing verb row
2245                 // event participation are essentially radio toggles. If you make a subsequent choice,
2246                 // we need to eradicate your first choice.
2247                 if ($event_verb_flag) {
2248                         $verbs = "'" . dbesc(ACTIVITY_ATTEND) . "', '" . dbesc(ACTIVITY_ATTENDNO) . "', '" . dbesc(ACTIVITY_ATTENDMAYBE) . "'";
2249                 } else {
2250                         $verbs = "'".dbesc($activity)."'";
2251                 }
2252
2253                 /// @todo This query is expected to be a performance eater due to the "OR" - it has to be changed totally
2254                 $existing_like = q("SELECT `id`, `guid`, `verb` FROM `item`
2255                         WHERE `verb` IN ($verbs)
2256                         AND `deleted` = 0
2257                         AND `author-id` = %d
2258                         AND `uid` = %d
2259                         AND (`parent` = '%s' OR `parent-uri` = '%s' OR `thr-parent` = '%s')
2260                         LIMIT 1",
2261                         intval($author_contact['id']),
2262                         intval($item['uid']),
2263                         dbesc($item_id), dbesc($item_id), dbesc($item['uri'])
2264                 );
2265
2266                 // If it exists, mark it as deleted
2267                 if (DBM::is_result($existing_like)) {
2268                         $like_item = $existing_like[0];
2269
2270                         // Already voted, undo it
2271                         $fields = ['deleted' => true, 'unseen' => true, 'changed' => DateTimeFormat::utcNow()];
2272                         dba::update('item', $fields, ['id' => $like_item['id']]);
2273
2274                         // Clean up the Diaspora signatures for this like
2275                         // Go ahead and do it even if Diaspora support is disabled. We still want to clean up
2276                         // if it had been enabled in the past
2277                         dba::delete('sign', ['iid' => $like_item['id']]);
2278
2279                         $like_item_id = $like_item['id'];
2280                         Worker::add(PRIORITY_HIGH, "Notifier", "like", $like_item_id);
2281
2282                         if (!$event_verb_flag || $like_item['verb'] == $activity) {
2283                                 return true;
2284                         }
2285                 }
2286
2287                 // Verb is "un-something", just trying to delete existing entries
2288                 if (strpos($verb, 'un') === 0) {
2289                         return true;
2290                 }
2291
2292                 // Else or if event verb different from existing row, create a new item row
2293                 $post_type = (($item['resource-id']) ? L10n::t('photo') : L10n::t('status'));
2294                 if ($item['object-type'] === ACTIVITY_OBJ_EVENT) {
2295                         $post_type = L10n::t('event');
2296                 }
2297                 $objtype = $item['resource-id'] ? ACTIVITY_OBJ_IMAGE : ACTIVITY_OBJ_NOTE ;
2298                 $link = xmlify('<link rel="alternate" type="text/html" href="' . System::baseUrl() . '/display/' . $owner_self_contact['nick'] . '/' . $item['id'] . '" />' . "\n") ;
2299                 $body = $item['body'];
2300
2301                 $obj = <<< EOT
2302
2303                 <object>
2304                         <type>$objtype</type>
2305                         <local>1</local>
2306                         <id>{$item['uri']}</id>
2307                         <link>$link</link>
2308                         <title></title>
2309                         <content>$body</content>
2310                 </object>
2311 EOT;
2312
2313                 $ulink = '[url=' . $author_contact['url'] . ']' . $author_contact['name'] . '[/url]';
2314                 $alink = '[url=' . $item['author-link'] . ']' . $item['author-name'] . '[/url]';
2315                 $plink = '[url=' . System::baseUrl() . '/display/' . $owner_self_contact['nick'] . '/' . $item['id'] . ']' . $post_type . '[/url]';
2316
2317                 $new_item = [
2318                         'guid'          => get_guid(32),
2319                         'uri'           => item_new_uri(self::getApp()->get_hostname(), $item['uid']),
2320                         'uid'           => $item['uid'],
2321                         'contact-id'    => $item_contact_id,
2322                         'type'          => 'activity',
2323                         'wall'          => $item['wall'],
2324                         'origin'        => 1,
2325                         'gravity'       => GRAVITY_LIKE,
2326                         'parent'        => $item['id'],
2327                         'parent-uri'    => $item['uri'],
2328                         'thr-parent'    => $item['uri'],
2329                         'owner-id'      => $item['owner-id'],
2330                         'owner-name'    => $item['owner-name'],
2331                         'owner-link'    => $item['owner-link'],
2332                         'owner-avatar'  => $item['owner-avatar'],
2333                         'author-id'     => $author_contact['id'],
2334                         'author-name'   => $author_contact['name'],
2335                         'author-link'   => $author_contact['url'],
2336                         'author-avatar' => $author_contact['thumb'],
2337                         'body'          => sprintf($bodyverb, $ulink, $alink, $plink),
2338                         'verb'          => $activity,
2339                         'object-type'   => $objtype,
2340                         'object'        => $obj,
2341                         'allow_cid'     => $item['allow_cid'],
2342                         'allow_gid'     => $item['allow_gid'],
2343                         'deny_cid'      => $item['deny_cid'],
2344                         'deny_gid'      => $item['deny_gid'],
2345                         'visible'       => 1,
2346                         'unseen'        => 1,
2347                 ];
2348
2349                 $new_item_id = self::insert($new_item);
2350
2351                 // If the parent item isn't visible then set it to visible
2352                 if (!$item['visible']) {
2353                         self::update(['visible' => true], ['id' => $item['id']]);
2354                 }
2355
2356                 // Save the author information for the like in case we need to relay to Diaspora
2357                 Diaspora::storeLikeSignature($item_contact, $new_item_id);
2358
2359                 $new_item['id'] = $new_item_id;
2360
2361                 Addon::callHooks('post_local_end', $new_item);
2362
2363                 Worker::add(PRIORITY_HIGH, "Notifier", "like", $new_item_id);
2364
2365                 return true;
2366         }
2367
2368         private static function addThread($itemid, $onlyshadow = false)
2369         {
2370                 $fields = ['uid', 'created', 'edited', 'commented', 'received', 'changed', 'wall', 'private', 'pubmail',
2371                         'moderated', 'visible', 'starred', 'bookmark', 'contact-id',
2372                         'deleted', 'origin', 'forum_mode', 'mention', 'network', 'author-id', 'owner-id'];
2373                 $condition = ["`id` = ? AND (`parent` = ? OR `parent` = 0)", $itemid, $itemid];
2374                 $item = dba::selectFirst('item', $fields, $condition);
2375
2376                 if (!DBM::is_result($item)) {
2377                         return;
2378                 }
2379
2380                 $item['iid'] = $itemid;
2381
2382                 if (!$onlyshadow) {
2383                         $result = dba::insert('thread', $item);
2384
2385                         logger("Add thread for item ".$itemid." - ".print_r($result, true), LOGGER_DEBUG);
2386                 }
2387         }
2388
2389         private static function updateThread($itemid, $setmention = false)
2390         {
2391                 $fields = ['uid', 'guid', 'title', 'body', 'created', 'edited', 'commented', 'received', 'changed',
2392                         'wall', 'private', 'pubmail', 'moderated', 'visible', 'starred', 'bookmark', 'contact-id',
2393                         'deleted', 'origin', 'forum_mode', 'network', 'author-id', 'owner-id', 'rendered-html', 'rendered-hash'];
2394                 $condition = ["`id` = ? AND (`parent` = ? OR `parent` = 0)", $itemid, $itemid];
2395
2396                 $item = dba::selectFirst('item', $fields, $condition);
2397                 if (!DBM::is_result($item)) {
2398                         return;
2399                 }
2400
2401                 if ($setmention) {
2402                         $item["mention"] = 1;
2403                 }
2404
2405                 $sql = "";
2406
2407                 $fields = [];
2408
2409                 foreach ($item as $field => $data) {
2410                         if (!in_array($field, ["guid", "title", "body", "rendered-html", "rendered-hash"])) {
2411                                 $fields[$field] = $data;
2412                         }
2413                 }
2414
2415                 $result = dba::update('thread', $fields, ['iid' => $itemid]);
2416
2417                 logger("Update thread for item ".$itemid." - guid ".$item["guid"]." - ".(int)$result, LOGGER_DEBUG);
2418
2419                 // Updating a shadow item entry
2420                 $items = dba::selectFirst('item', ['id'], ['guid' => $item['guid'], 'uid' => 0]);
2421
2422                 if (!DBM::is_result($items)) {
2423                         return;
2424                 }
2425
2426                 $fields = ['title' => $item['title'], 'body' => $item['body'],
2427                         'rendered-html' => $item['rendered-html'], 'rendered-hash' => $item['rendered-hash']];
2428                 $result = dba::update('item', $fields, ['id' => $items['id']]);
2429
2430                 logger("Updating public shadow for post ".$items["id"]." - guid ".$item["guid"]." Result: ".print_r($result, true), LOGGER_DEBUG);
2431         }
2432
2433         private static function deleteThread($itemid, $itemuri = "")
2434         {
2435                 $item = dba::selectFirst('thread', ['uid'], ['iid' => $itemid]);
2436                 if (!DBM::is_result($item)) {
2437                         logger('No thread found for id '.$itemid, LOGGER_DEBUG);
2438                         return;
2439                 }
2440
2441                 // Using dba::delete at this time could delete the associated item entries
2442                 $result = dba::e("DELETE FROM `thread` WHERE `iid` = ?", $itemid);
2443
2444                 logger("deleteThread: Deleted thread for item ".$itemid." - ".print_r($result, true), LOGGER_DEBUG);
2445
2446                 if ($itemuri != "") {
2447                         $condition = ["`uri` = ? AND NOT `deleted` AND NOT (`uid` IN (?, 0))", $itemuri, $item["uid"]];
2448                         if (!dba::exists('item', $condition)) {
2449                                 dba::delete('item', ['uri' => $itemuri, 'uid' => 0]);
2450                                 logger("deleteThread: Deleted shadow for item ".$itemuri, LOGGER_DEBUG);
2451                         }
2452                 }
2453         }
2454 }