src/Model/Item.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2023, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Model;
  23
  24 use Friendica\Contact\LocalRelationship\Entity\LocalRelationship;
  25 use Friendica\Content\Text\BBCode;
  26 use Friendica\Content\Text\HTML;
  27 use Friendica\Core\Hook;
  28 use Friendica\Core\Logger;
  29 use Friendica\Core\Protocol;
  30 use Friendica\Core\Renderer;
  31 use Friendica\Core\System;
  32 use Friendica\Core\Worker;
  33 use Friendica\Database\DBA;
  34 use Friendica\DI;
  35 use Friendica\Model\Post\Category;
  36 use Friendica\Network\HTTPException\InternalServerErrorException;
  37 use Friendica\Protocol\Activity;
  38 use Friendica\Protocol\ActivityPub;
  39 use Friendica\Protocol\Delivery;
  40 use Friendica\Protocol\Diaspora;
  41 use Friendica\Util\DateTimeFormat;
  42 use Friendica\Util\Map;
  43 use Friendica\Util\Network;
  44 use Friendica\Util\Proxy;
  45 use Friendica\Util\Strings;
  46 use Friendica\Util\Temporal;
  47 use GuzzleHttp\Psr7\Uri;
  48 use LanguageDetection\Language;
  49
  50 class Item
  51 {
  52         // Posting types, inspired by https://www.w3.org/TR/activitystreams-vocabulary/#object-types
  53         const PT_ARTICLE = 0;
  54         const PT_NOTE = 1;
  55         const PT_PAGE = 2;
  56         const PT_IMAGE = 16;
  57         const PT_AUDIO = 17;
  58         const PT_VIDEO = 18;
  59         const PT_DOCUMENT = 19;
  60         const PT_EVENT = 32;
  61         const PT_POLL = 33;
  62         const PT_PERSONAL_NOTE = 128;
  63
  64         // Posting reasons (Why had a post been stored for a user?)
  65         const PR_NONE = 0;
  66         const PR_TAG = 64;
  67         const PR_TO = 65;
  68         const PR_CC = 66;
  69         const PR_BTO = 67;
  70         const PR_BCC = 68;
  71         const PR_FOLLOWER = 69;
  72         const PR_ANNOUNCEMENT = 70;
  73         const PR_COMMENT = 71;
  74         const PR_STORED = 72;
  75         const PR_GLOBAL = 73;
  76         const PR_RELAY = 74;
  77         const PR_FETCHED = 75;
  78         const PR_COMPLETION = 76;
  79         const PR_DIRECT = 77;
  80         const PR_ACTIVITY = 78;
  81         const PR_DISTRIBUTE = 79;
  82         const PR_PUSHED = 80;
  83         const PR_LOCAL = 81;
  84         const PR_AUDIENCE = 82;
  85
  86         // system.accept_only_sharer setting values
  87         const COMPLETION_NONE    = 1;
  88         const COMPLETION_COMMENT = 0;
  89         const COMPLETION_LIKE    = 2;
  90
  91         // Field list that is used to display the items
  92         const DISPLAY_FIELDLIST = [
  93                 'uid', 'id', 'parent', 'guid', 'network', 'gravity',
  94                 'uri-id', 'uri', 'thr-parent-id', 'thr-parent', 'parent-uri-id', 'parent-uri', 'conversation',
  95                 'commented', 'created', 'edited', 'received', 'verb', 'object-type', 'postopts', 'plink',
  96                 'wall', 'private', 'starred', 'origin', 'parent-origin', 'title', 'body', 'language',
  97                 'content-warning', 'location', 'coord', 'app', 'rendered-hash', 'rendered-html', 'object',
  98                 'quote-uri', 'quote-uri-id', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'mention', 'global',
  99                 'author-id', 'author-link', 'author-alias', 'author-name', 'author-avatar', 'author-network', 'author-updated', 'author-gsid', 'author-baseurl', 'author-addr', 'author-uri-id',
 100                 'owner-id', 'owner-link', 'owner-alias', 'owner-name', 'owner-avatar', 'owner-network', 'owner-contact-type', 'owner-updated', 'owner-gsid',
 101                 'causer-id', 'causer-link', 'causer-alias', 'causer-name', 'causer-avatar', 'causer-contact-type', 'causer-network', 'causer-gsid',
 102                 'contact-id', 'contact-uid', 'contact-link', 'contact-name', 'contact-avatar',
 103                 'writable', 'self', 'cid', 'alias',
 104                 'event-created', 'event-edited', 'event-start', 'event-finish',
 105                 'event-summary', 'event-desc', 'event-location', 'event-type',
 106                 'event-nofinish', 'event-ignore', 'event-id',
 107                 'question-id', 'question-multiple', 'question-voters', 'question-end-time',
 108                 'has-categories', 'has-media',
 109                 'delivery_queue_count', 'delivery_queue_done', 'delivery_queue_failed'
 110         ];
 111
 112         // Field list that is used to deliver items via the protocols
 113         const DELIVER_FIELDLIST = [
 114                 'uid', 'id', 'parent', 'uri-id', 'uri', 'thr-parent', 'parent-uri', 'guid',
 115                 'parent-guid', 'conversation', 'received', 'created', 'edited', 'verb', 'object-type', 'object', 'target',
 116                 'private', 'title', 'body', 'raw-body', 'location', 'coord', 'app',
 117                 'inform', 'deleted', 'extid', 'post-type', 'post-reason', 'gravity',
 118                 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid',
 119                 'author-id', 'author-addr', 'author-link', 'author-name', 'author-avatar', 'owner-id', 'owner-link', 'contact-uid',
 120                 'signed_text', 'network', 'wall', 'contact-id', 'plink', 'origin',
 121                 'thr-parent-id', 'parent-uri-id', 'quote-uri', 'quote-uri-id', 'postopts', 'pubmail',
 122                 'event-created', 'event-edited', 'event-start', 'event-finish',
 123                 'event-summary', 'event-desc', 'event-location', 'event-type',
 124                 'event-nofinish', 'event-ignore', 'event-id'
 125         ];
 126
 127         // All fields in the item table
 128         const ITEM_FIELDLIST = [
 129                 'id', 'uid', 'parent', 'uri', 'parent-uri', 'thr-parent',
 130                 'guid', 'uri-id', 'parent-uri-id', 'thr-parent-id', 'conversation', 'vid',
 131                 'quote-uri', 'quote-uri-id', 'contact-id', 'wall', 'gravity', 'extid', 'psid',
 132                 'created', 'edited', 'commented', 'received', 'changed', 'verb',
 133                 'postopts', 'plink', 'resource-id', 'event-id', 'inform',
 134                 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'post-type', 'post-reason',
 135                 'private', 'pubmail', 'visible', 'starred',
 136                 'unseen', 'deleted', 'origin', 'mention', 'global', 'network',
 137                 'title', 'content-warning', 'body', 'location', 'coord', 'app',
 138                 'rendered-hash', 'rendered-html', 'object-type', 'object', 'target-type', 'target',
 139                 'author-id', 'author-link', 'author-name', 'author-avatar', 'author-network',
 140                 'owner-id', 'owner-link', 'owner-name', 'owner-avatar', 'causer-id'
 141         ];
 142
 143         // List of all verbs that don't need additional content data.
 144         // Never reorder or remove entries from this list. Just add new ones at the end, if needed.
 145         const ACTIVITIES = [
 146                 Activity::LIKE, Activity::DISLIKE,
 147                 Activity::ATTEND, Activity::ATTENDNO, Activity::ATTENDMAYBE,
 148                 Activity::FOLLOW,
 149                 Activity::ANNOUNCE
 150         ];
 151
 152         // Privacy levels
 153         const PUBLIC = 0;
 154         const PRIVATE = 1;
 155         const UNLISTED = 2;
 156
 157         // Item weight for query ordering
 158         const GRAVITY_PARENT   = 0;
 159         const GRAVITY_ACTIVITY = 3;
 160         const GRAVITY_COMMENT  = 6;
 161         const GRAVITY_UNKNOWN  = 9;
 162
 163         /**
 164          * Update existing item entries
 165          *
 166          * @param array $fields    The fields that are to be changed
 167          * @param array $condition The condition for finding the item entries
 168          *
 169          * In the future we may have to change permissions as well.
 170          * Then we had to add the user id as third parameter.
 171          *
 172          * A return value of "0" doesn't mean an error - but that 0 rows had been changed.
 173          *
 174          * @return integer|boolean number of affected rows - or "false" if there was an error
 175          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 176          */
 177         public static function update(array $fields, array $condition)
 178         {
 179                 if (empty($condition) || empty($fields)) {
 180                         return false;
 181                 }
 182
 183                 if (isset($fields['extid'])) {
 184                         $fields['external-id'] = ItemURI::getIdByURI($fields['extid']);
 185                 }
 186
 187                 if (!empty($fields['verb'])) {
 188                         $fields['vid'] = Verb::getID($fields['verb']);
 189                 }
 190
 191                 if (!empty($fields['edited'])) {
 192                         $previous = Post::selectFirst(['edited'], $condition);
 193                 }
 194
 195                 $rows = Post::update($fields, $condition);
 196                 if (is_bool($rows)) {
 197                         return $rows;
 198                 }
 199
 200                 // We only need to call the line by line update for specific fields
 201                 if (
 202                         empty($fields['body']) && empty($fields['file']) &&
 203                         empty($fields['attach']) && empty($fields['edited'])
 204                 ) {
 205                         return $rows;
 206                 }
 207
 208                 Logger::info('Updating per single row method', ['fields' => $fields, 'condition' => $condition]);
 209
 210                 $items = Post::select(['id', 'origin', 'uri-id', 'uid', 'author-network', 'quote-uri-id'], $condition);
 211
 212                 $notify_items = [];
 213
 214                 while ($item = DBA::fetch($items)) {
 215                         if (!empty($fields['body'])) {
 216                                 if (!empty($item['quote-uri-id'])) {
 217                                         $fields['body'] = BBCode::removeSharedData($fields['body']);
 218
 219                                         if (!empty($fields['raw-body'])) {
 220                                                 $fields['raw-body'] = BBCode::removeSharedData($fields['raw-body']);
 221                                         }
 222                                 }
 223
 224                                 $content_fields = ['raw-body' => trim($fields['raw-body'] ?? $fields['body'])];
 225
 226                                 // Remove all media attachments from the body and store them in the post-media table
 227                                 // @todo On shared postings (Diaspora style and commented reshare) don't fetch content from the shared part
 228                                 $content_fields['raw-body'] = Post\Media::insertFromBody($item['uri-id'], $content_fields['raw-body']);
 229                                 $content_fields['raw-body'] = self::setHashtags($content_fields['raw-body']);
 230
 231                                 Post\Media::insertFromRelevantUrl($item['uri-id'], $content_fields['raw-body'], $fields['body'], $item['author-network']);
 232
 233                                 Post\Media::insertFromAttachmentData($item['uri-id'], $fields['body']);
 234                                 $content_fields['raw-body'] = BBCode::removeAttachment($content_fields['raw-body']);
 235
 236                                 Post\Content::update($item['uri-id'], $content_fields);
 237                         }
 238
 239                         if (!empty($fields['file'])) {
 240                                 Post\Category::storeTextByURIId($item['uri-id'], $item['uid'], $fields['file']);
 241                         }
 242
 243                         if (!empty($fields['attach'])) {
 244                                 Post\Media::insertFromAttachment($item['uri-id'], $fields['attach']);
 245                         }
 246
 247                         // We only need to notify others when it is an original entry from us.
 248                         // Only call the notifier when the item had been edited and records had been changed.
 249                         if ($item['origin'] && !empty($fields['edited']) && ($previous['edited'] != $fields['edited'])) {
 250                                 $notify_items[] = $item['id'];
 251                         }
 252                 }
 253
 254                 DBA::close($items);
 255
 256                 foreach ($notify_items as $notify_item) {
 257                         $post = Post::selectFirst([], ['id' => $notify_item]);
 258
 259                         if ($post['gravity'] != self::GRAVITY_PARENT) {
 260                                 $signed = Diaspora::createCommentSignature($post);
 261                                 if (!empty($signed)) {
 262                                         DBA::replace('diaspora-interaction', ['uri-id' => $post['uri-id'], 'interaction' => json_encode($signed)]);
 263                                 }
 264                         }
 265
 266                         Worker::add(Worker::PRIORITY_HIGH, 'Notifier', Delivery::POST, (int)$post['uri-id'], (int)$post['uid']);
 267                 }
 268
 269                 return $rows;
 270         }
 271
 272         /**
 273          * Delete an item and notify others about it - if it was ours
 274          *
 275          * @param array   $condition The condition for finding the item entries
 276          * @param integer $priority  Priority for the notification
 277          * @return void
 278          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 279          */
 280         public static function markForDeletion(array $condition, int $priority = Worker::PRIORITY_HIGH)
 281         {
 282                 $items = Post::select(['id'], $condition);
 283                 while ($item = Post::fetch($items)) {
 284                         self::markForDeletionById($item['id'], $priority);
 285                 }
 286                 DBA::close($items);
 287         }
 288
 289         /**
 290          * Delete an item for an user and notify others about it - if it was ours
 291          *
 292          * @param array   $condition The condition for finding the item entries
 293          * @param integer $uid       User who wants to delete this item
 294          * @return void
 295          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 296          */
 297         public static function deleteForUser(array $condition, int $uid)
 298         {
 299                 if ($uid == 0) {
 300                         return;
 301                 }
 302
 303                 $items = Post::select(['id', 'uid', 'uri-id'], $condition);
 304                 while ($item = Post::fetch($items)) {
 305                         if (in_array($item['uid'], [$uid, 0])) {
 306                                 Post\User::update($item['uri-id'], $uid, ['hidden' => true], true);
 307                                 Post\ThreadUser::update($item['uri-id'], $uid, ['hidden' => true], true);
 308                         }
 309
 310                         if ($item['uid'] == $uid) {
 311                                 self::markForDeletionById($item['id'], Worker::PRIORITY_HIGH);
 312                         } elseif ($item['uid'] != 0) {
 313                                 Logger::warning('Wrong ownership. Not deleting item', ['id' => $item['id']]);
 314                         }
 315                 }
 316                 DBA::close($items);
 317         }
 318
 319         /**
 320          * Mark an item for deletion, delete related data and notify others about it - if it was ours
 321          *
 322          * @param integer $item_id
 323          * @param integer $priority Priority for the notification
 324          * @return boolean success
 325          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 326          */
 327         public static function markForDeletionById(int $item_id, int $priority = Worker::PRIORITY_HIGH): bool
 328         {
 329                 Logger::info('Mark item for deletion by id', ['id' => $item_id, 'callstack' => System::callstack()]);
 330                 // locate item to be deleted
 331                 $fields = [
 332                         'id', 'uri', 'uri-id', 'uid', 'parent', 'parent-uri-id', 'origin',
 333                         'deleted', 'resource-id', 'event-id',
 334                         'verb', 'object-type', 'object', 'target', 'contact-id', 'psid', 'gravity'
 335                 ];
 336                 $item = Post::selectFirst($fields, ['id' => $item_id]);
 337                 if (!DBA::isResult($item)) {
 338                         Logger::info('Item not found.', ['id' => $item_id]);
 339                         return false;
 340                 }
 341
 342                 if ($item['deleted']) {
 343                         Logger::info('Item has already been marked for deletion.', ['id' => $item_id]);
 344                         return false;
 345                 }
 346
 347                 $parent = Post::selectFirst(['origin'], ['id' => $item['parent']]);
 348                 if (!DBA::isResult($parent)) {
 349                         $parent = ['origin' => false];
 350                 }
 351
 352                 // clean up categories and tags so they don't end up as orphans
 353                 Post\Category::deleteByURIId($item['uri-id'], $item['uid']);
 354
 355                 /*
 356                  * If item is a link to a photo resource, nuke all the associated photos
 357                  * (visitors will not have photo resources)
 358                  * This only applies to photos uploaded from the photos page. Photos inserted into a post do not
 359                  * generate a resource-id and therefore aren't intimately linked to the item.
 360                  */
 361                 /// @TODO: this should first check if photo is used elsewhere
 362                 if ($item['resource-id']) {
 363                         Photo::delete(['resource-id' => $item['resource-id'], 'uid' => $item['uid']]);
 364                 }
 365
 366                 // If item is a link to an event, delete the event.
 367                 if (intval($item['event-id'])) {
 368                         Event::delete($item['event-id']);
 369                 }
 370
 371                 // If item has attachments, drop them
 372                 $attachments = Post\Media::getByURIId($item['uri-id'], [Post\Media::DOCUMENT]);
 373                 foreach ($attachments as $attachment) {
 374                         if (preg_match('|attach/(\d+)|', $attachment['url'], $matches)) {
 375                                 Attach::delete(['id' => $matches[1], 'uid' => $item['uid']]);
 376                         }
 377                 }
 378
 379                 // Set the item to "deleted"
 380                 $item_fields = ['deleted' => true, 'edited' => DateTimeFormat::utcNow(), 'changed' => DateTimeFormat::utcNow()];
 381                 Post::update($item_fields, ['id' => $item['id']]);
 382
 383                 Post\Category::storeTextByURIId($item['uri-id'], $item['uid'], '');
 384
 385                 if (!Post::exists(["`uri-id` = ? AND `uid` != 0 AND NOT `deleted`", $item['uri-id']])) {
 386                         self::markForDeletion(['uri-id' => $item['uri-id'], 'uid' => 0, 'deleted' => false], $priority);
 387                 }
 388
 389                 Post\DeliveryData::delete($item['uri-id']);
 390
 391                 // If it's the parent of a comment thread, kill all the kids
 392                 if ($item['gravity'] == self::GRAVITY_PARENT) {
 393                         self::markForDeletion(['parent' => $item['parent'], 'deleted' => false], $priority);
 394                 }
 395
 396                 // Is it our comment and/or our thread?
 397                 if (($item['origin'] || $parent['origin']) && ($item['uid'] != 0)) {
 398                         // When we delete the original post we will delete all existing copies on the server as well
 399                         self::markForDeletion(['uri-id' => $item['uri-id'], 'deleted' => false], $priority);
 400
 401                         // send the notification upstream/downstream
 402                         if ($priority) {
 403                                 Worker::add(['priority' => $priority, 'dont_fork' => true], 'Notifier', Delivery::DELETION, (int)$item['uri-id'], (int)$item['uid']);
 404                         }
 405                 } elseif ($item['uid'] != 0) {
 406                         Post\User::update($item['uri-id'], $item['uid'], ['hidden' => true]);
 407                         Post\ThreadUser::update($item['uri-id'], $item['uid'], ['hidden' => true]);
 408                 }
 409
 410                 DI::notify()->deleteForItem($item['uri-id']);
 411                 DI::notification()->deleteForItem($item['uri-id']);
 412
 413                 Logger::info('Item has been marked for deletion.', ['id' => $item_id]);
 414
 415                 return true;
 416         }
 417
 418         /**
 419          * Get guid from given item record
 420          *
 421          * @param array $item Item record
 422          * @param bool Whether to notify (?)
 423          * @return string Guid
 424          */
 425         public static function guid(array $item, bool $notify): string
 426         {
 427                 if (!empty($item['guid'])) {
 428                         return trim($item['guid']);
 429                 }
 430
 431                 if ($notify) {
 432                         // We have to avoid duplicates. So we create the GUID in form of a hash of the plink or uri.
 433                         // We add the hash of our own host because our host is the original creator of the post.
 434                         $prefix_host = DI::baseUrl()->getHost();
 435                 } else {
 436                         $prefix_host = '';
 437
 438                         // We are only storing the post so we create a GUID from the original hostname.
 439                         if (!empty($item['author-link'])) {
 440                                 $parsed = parse_url($item['author-link']);
 441                                 if (!empty($parsed['host'])) {
 442                                         $prefix_host = $parsed['host'];
 443                                 }
 444                         }
 445
 446                         if (empty($prefix_host) && !empty($item['plink'])) {
 447                                 $parsed = parse_url($item['plink']);
 448                                 if (!empty($parsed['host'])) {
 449                                         $prefix_host = $parsed['host'];
 450                                 }
 451                         }
 452
 453                         if (empty($prefix_host) && !empty($item['uri'])) {
 454                                 $parsed = parse_url($item['uri']);
 455                                 if (!empty($parsed['host'])) {
 456                                         $prefix_host = $parsed['host'];
 457                                 }
 458                         }
 459
 460                         // Is it in the format data@host.tld? - Used for mail contacts
 461                         if (empty($prefix_host) && !empty($item['author-link']) && strstr($item['author-link'], '@')) {
 462                                 $mailparts = explode('@', $item['author-link']);
 463                                 $prefix_host = array_pop($mailparts);
 464                         }
 465                 }
 466
 467                 if (!empty($item['plink'])) {
 468                         $guid = self::guidFromUri($item['plink'], $prefix_host);
 469                 } elseif (!empty($item['uri'])) {
 470                         $guid = self::guidFromUri($item['uri'], $prefix_host);
 471                 } else {
 472                         $guid = System::createUUID(hash('crc32', $prefix_host));
 473                 }
 474
 475                 return $guid;
 476         }
 477
 478         /**
 479          * Returns contact id from given item record
 480          *
 481          * @param array $item Item record
 482          * @return int Contact id
 483          */
 484         private static function contactId(array $item): int
 485         {
 486                 if ($item['uid'] == 0) {
 487                         return $item['owner-id'];
 488                 }
 489
 490                 if ($item['origin']) {
 491                         $owner = User::getOwnerDataById($item['uid']);
 492                         return $owner['id'];
 493                 }
 494
 495                 $contact_id      = 0;
 496                 $user_contact_id = 0;
 497                 foreach (['group-link', 'causer-link', 'owner-link', 'author-link'] as $field) {
 498                         if (empty($item[$field])) {
 499                                 continue;
 500                         }
 501                         if (!$user_contact_id && Contact::isSharingByURL($item[$field], $item['uid'], true)) {
 502                                 $user_contact_id = Contact::getIdForURL($item[$field], $item['uid']);
 503                         } elseif (!$contact_id) {
 504                                 $contact_id = Contact::getIdForURL($item[$field]);
 505                         }
 506                 }
 507
 508                 if ($user_contact_id) {
 509                         return $user_contact_id;
 510                 }
 511
 512                 if (!empty($item['causer-id']) && Contact::isSharing($item['causer-id'], $item['uid'], true)) {
 513                         $cdata = Contact::getPublicAndUserContactID($item['causer-id'], $item['uid']);
 514                         if (!empty($cdata['user'])) {
 515                                 return $cdata['user'];
 516                         }
 517                 }
 518
 519                 if ($contact_id) {
 520                         return $contact_id;
 521                 }
 522
 523                 Logger::warning('contact-id could not be fetched, using self contact instead.', ['uid' => $item['uid'], 'item' => $item]);
 524                 $self = Contact::selectFirst(['id'], ['self' => true, 'uid' => $item['uid']]);
 525                 return $self['id'];
 526         }
 527
 528         /**
 529          * Write an item array into a spool file to be inserted later.
 530          * This command is called whenever there are issues storing an item.
 531          *
 532          * @param array $item The item fields that are to be inserted
 533          * @throws \Exception
 534          */
 535         private static function spool(array $item)
 536         {
 537                 // Now we store the data in the spool directory
 538                 // We use "microtime" to keep the arrival order and "mt_rand" to avoid duplicates
 539                 $file = 'item-' . round(microtime(true) * 10000) . '-' . mt_rand() . '.msg';
 540
 541                 $spoolpath = System::getSpoolPath();
 542                 if ($spoolpath != '') {
 543                         $spool = $spoolpath . '/' . $file;
 544
 545                         file_put_contents($spool, json_encode($item));
 546                         Logger::warning("Item wasn't stored - Item was spooled into file", ['file' => $file]);
 547                 }
 548         }
 549
 550         /**
 551          * Check if the item array is a duplicate
 552          *
 553          * @param array $item Item record
 554          * @return boolean is it a duplicate?
 555          */
 556         private static function isDuplicate(array $item): bool
 557         {
 558                 // Checking if there is already an item with the same guid
 559                 $condition = ['guid' => $item['guid'], 'network' => $item['network'], 'uid' => $item['uid']];
 560                 if (Post::exists($condition)) {
 561                         Logger::notice('Found already existing item', $condition);
 562                         return true;
 563                 }
 564
 565                 $condition = [
 566                         'uri-id' => $item['uri-id'], 'uid' => $item['uid'],
 567                         'network' => [$item['network'], Protocol::DFRN]
 568                 ];
 569                 if (Post::exists($condition)) {
 570                         Logger::notice('duplicated item with the same uri found.', $condition);
 571                         return true;
 572                 }
 573
 574                 // On Friendica and Diaspora the GUID is unique
 575                 if (in_array($item['network'], [Protocol::DFRN, Protocol::DIASPORA])) {
 576                         $condition = ['guid' => $item['guid'], 'uid' => $item['uid']];
 577                         if (Post::exists($condition)) {
 578                                 Logger::notice('duplicated item with the same guid found.', $condition);
 579                                 return true;
 580                         }
 581                 } elseif ($item['network'] == Protocol::OSTATUS) {
 582                         // Check for an existing post with the same content. There seems to be a problem with OStatus.
 583                         $condition = [
 584                                 "`body` = ? AND `network` = ? AND `created` = ? AND `contact-id` = ? AND `uid` = ?",
 585                                 $item['body'], $item['network'], $item['created'], $item['contact-id'], $item['uid']
 586                         ];
 587                         if (Post::exists($condition)) {
 588                                 Logger::notice('duplicated item with the same body found.', $item);
 589                                 return true;
 590                         }
 591                 }
 592
 593                 /*
 594                  * Check for already added items.
 595                  * There is a timing issue here that sometimes creates double postings.
 596                  * An unique index would help - but the limitations of MySQL (maximum size of index values) prevent this.
 597                  */
 598                 if (($item['uid'] == 0) && Post::exists(['uri-id' => $item['uri-id'], 'uid' => 0])) {
 599                         Logger::notice('Global item already stored.', ['uri-id' => $item['uri-id'], 'network' => $item['network']]);
 600                         return true;
 601                 }
 602
 603                 return false;
 604         }
 605
 606         /**
 607          * Check if the item array is valid
 608          *
 609          * @param array $item Item record
 610          * @return boolean item is valid
 611          */
 612         public static function isValid(array $item): bool
 613         {
 614                 // When there is no content then we don't post it
 615                 if (($item['body'] . $item['title'] == '') && empty($item['quote-uri-id']) && empty($item['attachments']) && (empty($item['uri-id']) || !Post\Media::existsByURIId($item['uri-id']))) {
 616                         Logger::notice('No body, no title.');
 617                         return false;
 618                 }
 619
 620                 if (!empty($item['uid'])) {
 621                         $owner = User::getOwnerDataById($item['uid'], false);
 622                         if (!$owner) {
 623                                 Logger::warning('Missing item user owner data', ['uid' => $item['uid']]);
 624                                 return false;
 625                         }
 626
 627                         if ($owner['account_expired'] || $owner['account_removed']) {
 628                                 Logger::notice('Item user has been deleted/expired/removed', ['uid' => $item['uid'], 'deleted' => $owner['deleted'], 'account_expired' => $owner['account_expired'], 'account_removed' => $owner['account_removed']]);
 629                                 return false;
 630                         }
 631                 }
 632
 633                 if (!empty($item['author-id']) && Contact::isBlocked($item['author-id'])) {
 634                         Logger::notice('Author is blocked node-wide', ['author-link' => $item['author-link'], 'item-uri' => $item['uri']]);
 635                         return false;
 636                 }
 637
 638                 if (!empty($item['author-link']) && Network::isUrlBlocked($item['author-link'])) {
 639                         Logger::notice('Author server is blocked', ['author-link' => $item['author-link'], 'item-uri' => $item['uri']]);
 640                         return false;
 641                 }
 642
 643                 if (!empty($item['owner-id']) && Contact::isBlocked($item['owner-id'])) {
 644                         Logger::notice('Owner is blocked node-wide', ['owner-link' => $item['owner-link'], 'item-uri' => $item['uri']]);
 645                         return false;
 646                 }
 647
 648                 if (!empty($item['owner-link']) && Network::isUrlBlocked($item['owner-link'])) {
 649                         Logger::notice('Owner server is blocked', ['owner-link' => $item['owner-link'], 'item-uri' => $item['uri']]);
 650                         return false;
 651                 }
 652
 653                 if ($item['verb'] == Activity::FOLLOW) {
 654                         if (!$item['origin'] && ($item['author-id'] == Contact::getPublicIdByUserId($item['uid']))) {
 655                                 // Our own follow request can be relayed to us. We don't store it to avoid notification chaos.
 656                                 Logger::info("Follow: Don't store not origin follow request", ['parent-uri' => $item['parent-uri']]);
 657                                 return false;
 658                         }
 659
 660                         $condition = [
 661                                 'verb' => Activity::FOLLOW, 'uid' => $item['uid'],
 662                                 'parent-uri' => $item['parent-uri'], 'author-id' => $item['author-id']
 663                         ];
 664                         if (Post::exists($condition)) {
 665                                 // It happens that we receive multiple follow requests by the same author - we only store one.
 666                                 Logger::info('Follow: Found existing follow request from author', ['author-id' => $item['author-id'], 'parent-uri' => $item['parent-uri']]);
 667                                 return false;
 668                         }
 669                 }
 670
 671                 return true;
 672         }
 673
 674         /**
 675          * Check if the item array is too old
 676          *
 677          * @param array $item Item record
 678          * @return boolean item is too old
 679          */
 680         public static function isTooOld(array $item): bool
 681         {
 682                 // check for create date and expire time
 683                 $expire_interval = DI::config()->get('system', 'dbclean-expire-days', 0);
 684
 685                 $user = DBA::selectFirst('user', ['expire'], ['uid' => $item['uid']]);
 686                 if (DBA::isResult($user) && ($user['expire'] > 0) && (($user['expire'] < $expire_interval) || ($expire_interval == 0))) {
 687                         $expire_interval = $user['expire'];
 688                 }
 689
 690                 if (($expire_interval > 0) && !empty($item['created'])) {
 691                         $expire_date = time() - ($expire_interval * 86400);
 692                         $created_date = strtotime($item['created']);
 693                         if ($created_date < $expire_date) {
 694                                 Logger::notice('Item created before expiration interval.', [
 695                                         'created' => date('c', $created_date),
 696                                         'expired' => date('c', $expire_date),
 697                                         '$item' => $item
 698                                 ]);
 699                                 return true;
 700                         }
 701                 }
 702
 703                 return false;
 704         }
 705
 706         /**
 707          * Return the id of the given item array if it has been stored before
 708          *
 709          * @param array $item Item record
 710          * @return integer Item id or zero on error
 711          */
 712         private static function getDuplicateID(array $item): int
 713         {
 714                 if (empty($item['network']) || in_array($item['network'], Protocol::FEDERATED)) {
 715                         $condition = [
 716                                 '`uri-id` = ? AND `uid` = ? AND `network` IN (?, ?, ?, ?)',
 717                                 $item['uri-id'],
 718                                 $item['uid'],
 719                                 Protocol::ACTIVITYPUB,
 720                                 Protocol::DIASPORA,
 721                                 Protocol::DFRN,
 722                                 Protocol::OSTATUS
 723                         ];
 724                         $existing = Post::selectFirst(['id', 'network'], $condition);
 725                         if (DBA::isResult($existing)) {
 726                                 // We only log the entries with a different user id than 0. Otherwise we would have too many false positives
 727                                 if ($item['uid'] != 0) {
 728                                         Logger::notice('Item already existed for user', [
 729                                                 'uri-id' => $item['uri-id'],
 730                                                 'uid' => $item['uid'],
 731                                                 'network' => $item['network'],
 732                                                 'existing_id' => $existing['id'],
 733                                                 'existing_network' => $existing['network']
 734                                         ]);
 735                                 }
 736
 737                                 return $existing['id'];
 738                         }
 739                 }
 740                 return 0;
 741         }
 742
 743         /**
 744          * Fetch the uri-id of the parent for the given uri-id
 745          *
 746          * @param integer $uriid
 747          * @return integer
 748          */
 749         public static function getParent(int $uriid): int
 750         {
 751                 $thread_parent = Post::selectFirstPost(['thr-parent-id', 'gravity'], ['uri-id' => $uriid]);
 752                 if (empty($thread_parent)) {
 753                         return 0;
 754                 }
 755
 756                 if ($thread_parent['gravity'] == Item::GRAVITY_PARENT) {
 757                         return $uriid;
 758                 }
 759
 760                 return self::getParent($thread_parent['thr-parent-id']);
 761         }
 762
 763         /**
 764          * Fetch top-level parent data for the given item array
 765          *
 766          * @param array $item
 767          * @return array item array with parent data
 768          * @throws \Exception
 769          */
 770         private static function getTopLevelParent(array $item): array
 771         {
 772                 $fields = [
 773                         'uid', 'uri', 'parent-uri', 'id', 'deleted',
 774                         'uri-id', 'parent-uri-id',
 775                         'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid',
 776                         'wall', 'private', 'origin', 'author-id'
 777                 ];
 778                 $condition = ['uri-id' => [$item['thr-parent-id'], $item['parent-uri-id']], 'uid' => $item['uid']];
 779                 $params = ['order' => ['id' => false]];
 780                 $parent = Post::selectFirst($fields, $condition, $params);
 781
 782                 if (!DBA::isResult($parent) && Post::exists(['uri-id' => [$item['thr-parent-id'], $item['parent-uri-id']], 'uid' => 0])) {
 783                         $stored = Item::storeForUserByUriId($item['thr-parent-id'], $item['uid'], ['post-reason' => Item::PR_COMPLETION]);
 784                         if (!$stored && ($item['thr-parent-id'] != $item['parent-uri-id'])) {
 785                                 $stored = Item::storeForUserByUriId($item['parent-uri-id'], $item['uid'], ['post-reason' => Item::PR_COMPLETION]);
 786                         }
 787                         if ($stored) {
 788                                 Logger::info('Stored thread parent item for user', ['uri-id' => $item['thr-parent-id'], 'uid' => $item['uid'], 'stored' => $stored]);
 789                                 $parent = Post::selectFirst($fields, $condition, $params);
 790                         }
 791                 }
 792
 793                 if (!DBA::isResult($parent)) {
 794                         Logger::notice('item parent was not found - ignoring item', ['uri-id' => $item['uri-id'], 'thr-parent-id' => $item['thr-parent-id'], 'uid' => $item['uid'], 'callstack' => System::callstack(20)]);
 795                         return [];
 796                 }
 797
 798                 if ($parent['uri-id'] == $parent['parent-uri-id']) {
 799                         return $parent;
 800                 }
 801
 802                 $condition = [
 803                         'uri-id' => $parent['parent-uri-id'],
 804                         'parent-uri-id' => $parent['parent-uri-id'],
 805                         'uid' => $parent['uid']
 806                 ];
 807                 $params = ['order' => ['id' => false]];
 808                 $toplevel_parent = Post::selectFirst($fields, $condition, $params);
 809
 810                 if (!DBA::isResult($toplevel_parent) && $item['origin']) {
 811                         $stored = Item::storeForUserByUriId($item['parent-uri-id'], $item['uid'], ['post-reason' => Item::PR_COMPLETION]);
 812                         Logger::info('Stored parent item for user', ['uri-id' => $item['parent-uri-id'], 'uid' => $item['uid'], 'stored' => $stored]);
 813                         $toplevel_parent = Post::selectFirst($fields, $condition, $params);
 814                 }
 815
 816                 if (!DBA::isResult($toplevel_parent)) {
 817                         Logger::notice('item top level parent was not found - ignoring item', ['parent-uri-id' => $parent['parent-uri-id'], 'uid' => $parent['uid']]);
 818                         return [];
 819                 }
 820
 821                 return $toplevel_parent;
 822         }
 823
 824         /**
 825          * Get the gravity for the given item array
 826          *
 827          * @param array $item
 828          * @return integer gravity
 829          */
 830         private static function getGravity(array $item): int
 831         {
 832                 $activity = DI::activity();
 833
 834                 if (isset($item['gravity'])) {
 835                         return intval($item['gravity']);
 836                 } elseif ($item['parent-uri-id'] === $item['uri-id']) {
 837                         return self::GRAVITY_PARENT;
 838                 } elseif ($activity->match($item['verb'], Activity::POST)) {
 839                         return self::GRAVITY_COMMENT;
 840                 } elseif ($activity->match($item['verb'], Activity::FOLLOW)) {
 841                         return self::GRAVITY_ACTIVITY;
 842                 } elseif ($activity->match($item['verb'], Activity::ANNOUNCE)) {
 843                         return self::GRAVITY_ACTIVITY;
 844                 }
 845
 846                 Logger::info('Unknown gravity for verb', ['verb' => $item['verb']]);
 847                 return self::GRAVITY_UNKNOWN;   // Should not happen
 848         }
 849
 850         private static function prepareOriginPost(array $item): array
 851         {
 852                 $item = DI::contentItem()->initializePost($item);
 853                 $item = DI::contentItem()->finalizePost($item);
 854
 855                 return $item;
 856         }
 857
 858         /**
 859          * Inserts item record
 860          *
 861          * @param array $item Item array to be inserted
 862          * @param int   $notify Notification (type?)
 863          * @param bool  $post_local (???)
 864          * @return int Zero means error, otherwise primary key (id) is being returned
 865          */
 866         public static function insert(array $item, int $notify = 0, bool $post_local = true): int
 867         {
 868                 $orig_item = $item;
 869
 870                 $priority = Worker::PRIORITY_HIGH;
 871
 872                 // If it is a posting where users should get notifications, then define it as wall posting
 873                 if ($notify) {
 874                         $item = self::prepareOriginPost($item);
 875
 876                         if (is_int($notify) && in_array($notify, Worker::PRIORITIES)) {
 877                                 $priority = $notify;
 878                         }
 879                 } else {
 880                         $item['network'] = trim(($item['network'] ?? '') ?: Protocol::PHANTOM);
 881                 }
 882
 883                 $uid = intval($item['uid']);
 884
 885                 $item['guid'] = self::guid($item, $notify);
 886                 $item['uri'] = substr(trim($item['uri'] ?? '') ?: self::newURI($item['guid']), 0, 255);
 887
 888                 // Store URI data
 889                 $item['uri-id'] = ItemURI::insert(['uri' => $item['uri'], 'guid' => $item['guid']]);
 890
 891                 // Backward compatibility: parent-uri used to be the direct parent uri.
 892                 // If it is provided without a thr-parent, it probably is the old behavior.
 893                 if (empty($item['thr-parent']) || empty($item['parent-uri'])) {
 894                         $item['thr-parent'] = trim($item['thr-parent'] ?? $item['parent-uri'] ?? $item['uri']);
 895                         $item['parent-uri'] = $item['thr-parent'];
 896                 }
 897
 898                 $item['thr-parent-id'] = ItemURI::getIdByURI($item['thr-parent']);
 899                 $item['parent-uri-id'] = ItemURI::getIdByURI($item['parent-uri']);
 900
 901                 // Store conversation data
 902                 $source = $item['source'] ?? '';
 903                 unset($item['conversation-uri']);
 904                 unset($item['conversation-href']);
 905                 unset($item['source']);
 906
 907                 /*
 908                  * Do we already have this item?
 909                  * We have to check several networks since Friendica posts could be repeated
 910                  * via OStatus (maybe Diaspora as well)
 911                  */
 912                 $duplicate = self::getDuplicateID($item);
 913                 if ($duplicate) {
 914                         return $duplicate;
 915                 }
 916
 917                 // Additional duplicate checks
 918                 /// @todo Check why the first duplication check returns the item number and the second a 0
 919                 if (self::isDuplicate($item)) {
 920                         return 0;
 921                 }
 922
 923                 if (!isset($item['post-type'])) {
 924                         $item['post-type'] = empty($item['title']) ? self::PT_NOTE : self::PT_ARTICLE;
 925                 }
 926
 927                 $defined_permissions = isset($item['allow_cid']) && isset($item['allow_gid']) && isset($item['deny_cid']) && isset($item['deny_gid']) && isset($item['private']);
 928
 929                 $item['wall']          = intval($item['wall'] ?? 0);
 930                 $item['extid']         = trim($item['extid'] ?? '');
 931                 $item['author-name']   = trim($item['author-name'] ?? '');
 932                 $item['author-link']   = trim($item['author-link'] ?? '');
 933                 $item['author-avatar'] = trim($item['author-avatar'] ?? '');
 934                 $item['owner-name']    = trim($item['owner-name'] ?? '');
 935                 $item['owner-link']    = trim($item['owner-link'] ?? '');
 936                 $item['owner-avatar']  = trim($item['owner-avatar'] ?? '');
 937                 $item['received']      = (isset($item['received'])  ? DateTimeFormat::utc($item['received'])  : DateTimeFormat::utcNow());
 938                 $item['created']       = (isset($item['created'])   ? DateTimeFormat::utc($item['created'])   : $item['received']);
 939                 $item['edited']        = (isset($item['edited'])    ? DateTimeFormat::utc($item['edited'])    : $item['created']);
 940                 $item['changed']       = (isset($item['changed'])   ? DateTimeFormat::utc($item['changed'])   : $item['created']);
 941                 $item['commented']     = (isset($item['commented']) ? DateTimeFormat::utc($item['commented']) : $item['created']);
 942                 $item['title']         = substr(trim($item['title'] ?? ''), 0, 255);
 943                 $item['location']      = trim($item['location'] ?? '');
 944                 $item['coord']         = trim($item['coord'] ?? '');
 945                 $item['visible']       = (isset($item['visible']) ? intval($item['visible']) : 1);
 946                 $item['deleted']       = 0;
 947                 $item['verb']          = trim($item['verb'] ?? '');
 948                 $item['object-type']   = trim($item['object-type'] ?? '');
 949                 $item['object']        = trim($item['object'] ?? '');
 950                 $item['target-type']   = trim($item['target-type'] ?? '');
 951                 $item['target']        = trim($item['target'] ?? '');
 952                 $item['plink']         = substr(trim($item['plink'] ?? ''), 0, 255);
 953                 $item['allow_cid']     = trim($item['allow_cid'] ?? '');
 954                 $item['allow_gid']     = trim($item['allow_gid'] ?? '');
 955                 $item['deny_cid']      = trim($item['deny_cid'] ?? '');
 956                 $item['deny_gid']      = trim($item['deny_gid'] ?? '');
 957                 $item['private']       = intval($item['private'] ?? self::PUBLIC);
 958                 $item['body']          = trim($item['body'] ?? '');
 959                 $item['raw-body']      = trim($item['raw-body'] ?? $item['body']);
 960                 $item['app']           = trim($item['app'] ?? '');
 961                 $item['origin']        = intval($item['origin'] ?? 0);
 962                 $item['postopts']      = trim($item['postopts'] ?? '');
 963                 $item['resource-id']   = trim($item['resource-id'] ?? '');
 964                 $item['event-id']      = intval($item['event-id'] ?? 0);
 965                 $item['inform']        = trim($item['inform'] ?? '');
 966                 $item['file']          = trim($item['file'] ?? '');
 967
 968                 // Communities aren't working with the Diaspora protocol
 969                 if (($uid != 0) && ($item['network'] == Protocol::DIASPORA)) {
 970                         $user = User::getById($uid, ['account-type']);
 971                         if ($user['account-type'] == Contact::TYPE_COMMUNITY) {
 972                                 Logger::info('Community posts are not supported via Diaspora');
 973                                 return 0;
 974                         }
 975                 }
 976
 977                 // Items cannot be stored before they happen ...
 978                 if ($item['created'] > DateTimeFormat::utcNow()) {
 979                         $item['created'] = DateTimeFormat::utcNow();
 980                 }
 981
 982                 // We haven't invented time travel by now.
 983                 if ($item['edited'] > DateTimeFormat::utcNow()) {
 984                         $item['edited'] = DateTimeFormat::utcNow();
 985                 }
 986
 987                 $item['plink'] = ($item['plink'] ?? '') ?: DI::baseUrl() . '/display/' . urlencode($item['guid']);
 988
 989                 $item['gravity'] = self::getGravity($item);
 990
 991                 $default = [
 992                         'url' => $item['author-link'], 'name' => $item['author-name'],
 993                         'photo' => $item['author-avatar'], 'network' => $item['network']
 994                 ];
 995                 $item['author-id'] = ($item['author-id'] ?? 0) ?: Contact::getIdForURL($item['author-link'], 0, null, $default);
 996
 997                 $default = [
 998                         'url' => $item['owner-link'], 'name' => $item['owner-name'],
 999                         'photo' => $item['owner-avatar'], 'network' => $item['network']
1000                 ];
1001                 $item['owner-id'] = ($item['owner-id'] ?? 0) ?: Contact::getIdForURL($item['owner-link'], 0, null, $default);
1002
1003                 $item['post-reason'] = self::getPostReason($item);
1004
1005                 // Ensure that there is an avatar cache
1006                 Contact::checkAvatarCache($item['author-id']);
1007                 Contact::checkAvatarCache($item['owner-id']);
1008
1009                 $item['contact-id'] = self::contactId($item);
1010
1011                 if (
1012                         !empty($item['direction']) && in_array($item['direction'], [Conversation::PUSH, Conversation::RELAY]) &&
1013                         empty($item['origin']) && self::isTooOld($item)
1014                 ) {
1015                         Logger::info('Item is too old', ['item' => $item]);
1016                         return 0;
1017                 }
1018
1019                 if (!self::isValid($item)) {
1020                         return 0;
1021                 }
1022
1023                 if ($item['gravity'] !== self::GRAVITY_PARENT) {
1024                         $toplevel_parent = self::getTopLevelParent($item);
1025                         if (empty($toplevel_parent)) {
1026                                 return 0;
1027                         }
1028
1029                         $parent_id             = $toplevel_parent['id'];
1030                         $item['parent-uri']    = $toplevel_parent['uri'];
1031                         $item['parent-uri-id'] = $toplevel_parent['uri-id'];
1032                         $item['deleted']       = $toplevel_parent['deleted'];
1033                         $item['wall']          = $toplevel_parent['wall'];
1034
1035                         // Reshares have to keep their permissions to allow groups to work
1036                         if (!$defined_permissions && (!$item['origin'] || ($item['verb'] != Activity::ANNOUNCE))) {
1037                                 $item['allow_cid']     = $toplevel_parent['allow_cid'];
1038                                 $item['allow_gid']     = $toplevel_parent['allow_gid'];
1039                                 $item['deny_cid']      = $toplevel_parent['deny_cid'];
1040                                 $item['deny_gid']      = $toplevel_parent['deny_gid'];
1041                         }
1042
1043                         $parent_origin         = $toplevel_parent['origin'];
1044
1045                         // Don't federate received participation messages
1046                         if ($item['verb'] != Activity::FOLLOW) {
1047                                 $item['wall'] = $toplevel_parent['wall'];
1048                         } else {
1049                                 $item['wall'] = false;
1050                                 // Participations are technical messages, so they are set to "seen" automatically
1051                                 $item['unseen'] = false;
1052                         }
1053
1054                         /*
1055                          * If the parent is private, force privacy for the entire conversation
1056                          * This differs from the above settings as it subtly allows comments from
1057                          * email correspondents to be private even if the overall thread is not.
1058                          */
1059                         if (!$defined_permissions && $toplevel_parent['private']) {
1060                                 $item['private'] = $toplevel_parent['private'];
1061                         }
1062
1063                         // If its a post that originated here then tag the thread as "mention"
1064                         if ($item['origin'] && $item['uid']) {
1065                                 DBA::update('post-thread-user', ['mention' => true], ['uri-id' => $item['parent-uri-id'], 'uid' => $item['uid']]);
1066                                 Logger::info('tagged thread as mention', ['parent' => $parent_id, 'parent-uri-id' => $item['parent-uri-id'], 'uid' => $item['uid']]);
1067                         }
1068
1069                         // Update the contact relations
1070                         Contact\Relation::store($toplevel_parent['author-id'], $item['author-id'], $item['created']);
1071                 } else {
1072                         $parent_id = 0;
1073                         $parent_origin = $item['origin'];
1074
1075                         if ($item['wall'] && empty($item['conversation'])) {
1076                                 $item['conversation'] = $item['parent-uri'] . '#context';
1077                         }
1078                 }
1079
1080                 if ($item['origin']) {
1081                         if (
1082                                 Photo::setPermissionFromBody($item['body'], $item['uid'], $item['contact-id'], $item['allow_cid'], $item['allow_gid'], $item['deny_cid'], $item['deny_gid'])
1083                                 && ($item['object-type'] != Activity\ObjectType::EVENT)
1084                         ) {
1085                                 $item['object-type'] = Activity\ObjectType::IMAGE;
1086                         }
1087
1088                         $item = DI::contentItem()->moveAttachmentsFromBodyToAttach($item);
1089                 }
1090
1091                 $item['parent-uri-id'] = ItemURI::getIdByURI($item['parent-uri']);
1092                 $item['thr-parent-id'] = ItemURI::getIdByURI($item['thr-parent']);
1093
1094                 if (!empty($item['conversation']) && empty($item['conversation-id'])) {
1095                         $item['conversation-id'] = ItemURI::getIdByURI($item['conversation']);
1096                 }
1097
1098                 // Is this item available in the global items (with uid=0)?
1099                 if ($item['uid'] == 0) {
1100                         $item['global'] = true;
1101
1102                         // Set the global flag on all items if this was a global item entry
1103                         Post::update(['global' => true], ['uri-id' => $item['uri-id']]);
1104                 } else {
1105                         $item['global'] = Post::exists(['uid' => 0, 'uri-id' => $item['uri-id']]);
1106                 }
1107
1108                 // ACL settings
1109                 if (!$defined_permissions && !empty($item['allow_cid'] . $item['allow_gid'] . $item['deny_cid'] . $item['deny_gid'])) {
1110                         $item['private'] = self::PRIVATE;
1111                 }
1112
1113                 if ($notify && $post_local) {
1114                         $item['edit'] = false;
1115                         $item['parent'] = $parent_id;
1116
1117                         // Trigger automatic reactions for addons
1118                         if (!isset($item['api_source'])) {
1119                                 $item['api_source'] = true;
1120                         }
1121
1122                         // We have to tell the hooks who we are - this really should be improved
1123                         if (!DI::userSession()->getLocalUserId()) {
1124                                 $_SESSION['authenticated'] = true;
1125                                 $_SESSION['uid'] = $uid;
1126                                 $dummy_session = true;
1127                         } else {
1128                                 $dummy_session = false;
1129                         }
1130
1131                         Hook::callAll('post_local', $item);
1132
1133                         if ($dummy_session) {
1134                                 unset($_SESSION['authenticated']);
1135                                 unset($_SESSION['uid']);
1136                         }
1137                 } elseif (!$notify) {
1138                         Hook::callAll('post_remote', $item);
1139                 }
1140
1141                 if (!empty($item['cancel'])) {
1142                         Logger::notice('post cancelled by addon.');
1143                         return 0;
1144                 }
1145
1146                 if (empty($item['vid']) && !empty($item['verb'])) {
1147                         $item['vid'] = Verb::getID($item['verb']);
1148                 }
1149
1150                 // Creates or assigns the permission set
1151                 $item['psid'] = DI::permissionSet()->selectOrCreate(
1152                         DI::permissionSetFactory()->createFromString(
1153                                 $item['uid'],
1154                                 $item['allow_cid'],
1155                                 $item['allow_gid'],
1156                                 $item['deny_cid'],
1157                                 $item['deny_gid']
1158                         )
1159                 )->id;
1160
1161                 if (!empty($item['extid'])) {
1162                         $item['external-id'] = ItemURI::getIdByURI($item['extid']);
1163                 }
1164
1165                 if ($item['verb'] == Activity::ANNOUNCE) {
1166                         self::setOwnerforResharedItem($item);
1167                 }
1168
1169                 if (isset($item['attachments'])) {
1170                         foreach ($item['attachments'] as $attachment) {
1171                                 $attachment['uri-id'] = $item['uri-id'];
1172                                 Post\Media::insert($attachment);
1173                         }
1174                         unset($item['attachments']);
1175                 }
1176
1177                 if (empty($item['quote-uri-id'])) {
1178                         $quote_id = self::getQuoteUriId($item['body']);
1179                         if (!empty($quote_id)) {
1180                                 // This is one of these "should not happen" situations.
1181                                 // The protocol implementations should already have done this job.
1182                                 Logger::notice('Quote-uri-id detected in post', ['id' => $quote_id, 'guid' => $item['guid'], 'uri-id' => $item['uri-id'], 'callstack' => System::callstack(20)]);
1183                                 $item['quote-uri-id'] = $quote_id;
1184                         }
1185                 }
1186
1187                 if (!empty($item['quote-uri-id']) && ($item['quote-uri-id'] == $item['uri-id'])) {
1188                         Logger::info('Quote-Uri-Id is identical to Uri-Id', ['uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
1189                         unset($item['quote-uri-id']);
1190                 }
1191
1192                 if (!empty($item['quote-uri-id'])) {
1193                         $item['raw-body'] = BBCode::removeSharedData($item['raw-body']);
1194                         $item['body']     = BBCode::removeSharedData($item['body']);
1195                 }
1196
1197                 // Remove all media attachments from the body and store them in the post-media table
1198                 $item['raw-body'] = Post\Media::insertFromBody($item['uri-id'], $item['raw-body']);
1199                 $item['raw-body'] = self::setHashtags($item['raw-body']);
1200
1201                 $author = Contact::getById($item['author-id'], ['network']);
1202                 Post\Media::insertFromRelevantUrl($item['uri-id'], $item['raw-body'], $item['body'], $author['network'] ?? '');
1203
1204                 Post\Media::insertFromAttachmentData($item['uri-id'], $item['body']);
1205                 $item['body']     = BBCode::removeAttachment($item['body']);
1206                 $item['raw-body'] = BBCode::removeAttachment($item['raw-body']);
1207
1208                 // Check for hashtags in the body and repair or add hashtag links
1209                 $item['body'] = self::setHashtags($item['body']);
1210
1211                 $item['language'] = self::getLanguage($item);
1212
1213                 $notify_type = Delivery::POST;
1214
1215                 // Filling item related side tables
1216                 if (!empty($item['attach'])) {
1217                         Post\Media::insertFromAttachment($item['uri-id'], $item['attach']);
1218                 }
1219
1220                 if (empty($item['event-id'])) {
1221                         unset($item['event-id']);
1222
1223                         $ev = Event::fromBBCode($item['body']);
1224                         if ((!empty($ev['desc']) || !empty($ev['summary'])) && !empty($ev['start'])) {
1225                                 Logger::info('Event found.');
1226                                 $ev['cid']       = $item['contact-id'];
1227                                 $ev['uid']       = $item['uid'];
1228                                 $ev['uri']       = $item['uri'];
1229                                 $ev['edited']    = $item['edited'];
1230                                 $ev['private']   = $item['private'];
1231                                 $ev['guid']      = $item['guid'];
1232                                 $ev['plink']     = $item['plink'];
1233                                 $ev['network']   = $item['network'];
1234                                 $ev['protocol']  = $item['protocol'] ?? Conversation::PARCEL_UNKNOWN;
1235                                 $ev['direction'] = $item['direction'] ?? Conversation::UNKNOWN;
1236                                 $ev['source']    = $item['source'] ?? '';
1237
1238                                 $event = DBA::selectFirst('event', ['id'], ['uri' => $item['uri'], 'uid' => $item['uid']]);
1239                                 if (DBA::isResult($event)) {
1240                                         $ev['id'] = $event['id'];
1241                                 }
1242
1243                                 $event_id = Event::store($ev);
1244                                 $item = Event::getItemArrayForImportedId($event_id, $item);
1245
1246                                 Logger::info('Event was stored', ['id' => $event_id]);
1247                         }
1248                 }
1249
1250                 if (empty($item['causer-id'])) {
1251                         unset($item['causer-id']);
1252                 }
1253
1254                 if (in_array($item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
1255                         $content_warning = BBCode::getAbstract($item['body'], Protocol::ACTIVITYPUB);
1256                         if (!empty($content_warning) && empty($item['content-warning'])) {
1257                                 $item['content-warning'] = BBCode::toPlaintext($content_warning);
1258                         }
1259                 }
1260
1261                 $inserted = Post::insert($item['uri-id'], $item);
1262
1263                 if ($item['gravity'] == self::GRAVITY_PARENT) {
1264                         Post\Thread::insert($item['uri-id'], $item);
1265                 }
1266
1267                 // The content of activities normally doesn't matter - except for likes from Misskey
1268                 if (!in_array($item['verb'], self::ACTIVITIES) || in_array($item['verb'], [Activity::LIKE, Activity::DISLIKE]) && !empty($item['body']) && (mb_strlen($item['body']) == 1)) {
1269                         Post\Content::insert($item['uri-id'], $item);
1270                 }
1271
1272                 $item['parent'] = $parent_id;
1273
1274                 // Create Diaspora signature
1275                 if ($item['origin'] && empty($item['diaspora_signed_text']) && ($item['gravity'] != self::GRAVITY_PARENT)) {
1276                         $signed = Diaspora::createCommentSignature($item);
1277                         if (!empty($signed)) {
1278                                 $item['diaspora_signed_text'] = json_encode($signed);
1279                         }
1280                 }
1281
1282                 if (!empty($item['diaspora_signed_text'])) {
1283                         DBA::replace('diaspora-interaction', ['uri-id' => $item['uri-id'], 'interaction' => $item['diaspora_signed_text']]);
1284                 }
1285
1286                 // Attached file links
1287                 if (!empty($item['file'])) {
1288                         Post\Category::storeTextByURIId($item['uri-id'], $item['uid'], $item['file']);
1289                 }
1290
1291                 // Delivery relevant data
1292                 $delivery_data = Post\DeliveryData::extractFields($item);
1293
1294                 if (!empty($item['origin']) || !empty($item['wall']) || !empty($delivery_data['postopts']) || !empty($delivery_data['inform'])) {
1295                         Post\DeliveryData::insert($item['uri-id'], $delivery_data);
1296                 }
1297
1298                 // Store tags from the body if this hadn't been handled previously in the protocol classes
1299                 if (!Tag::existsForPost($item['uri-id'])) {
1300                         Tag::storeFromBody($item['uri-id'], $item['body']);
1301                 }
1302
1303                 $condition = ['uri-id' => $item['uri-id'], 'uid' => $item['uid']];
1304                 if (Post::exists($condition)) {
1305                         Logger::notice('Item is already inserted - aborting', $condition);
1306                         return 0;
1307                 }
1308
1309                 $post_user_id = Post\User::insert($item['uri-id'], $item['uid'], $item);
1310                 if (!$post_user_id) {
1311                         Logger::notice('Post-User is already inserted - aborting', ['uid' => $item['uid'], 'uri-id' => $item['uri-id']]);
1312                         return 0;
1313                 }
1314
1315                 if ($item['gravity'] == self::GRAVITY_PARENT) {
1316                         $item['post-user-id'] = $post_user_id;
1317                         Post\ThreadUser::insert($item['uri-id'], $item['uid'], $item);
1318                 }
1319
1320                 Logger::notice('created item', ['post-id' => $post_user_id, 'uid' => $item['uid'], 'network' => $item['network'], 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
1321
1322                 $posted_item = Post::selectFirst(self::ITEM_FIELDLIST, ['post-user-id' => $post_user_id]);
1323                 if (!DBA::isResult($posted_item)) {
1324                         // On failure store the data into a spool file so that the "SpoolPost" worker can try again later.
1325                         Logger::warning('Could not store item. it will be spooled', ['id' => $post_user_id]);
1326                         self::spool($orig_item);
1327                         return 0;
1328                 }
1329
1330                 // update the commented timestamp on the parent
1331                 if (DI::config()->get('system', 'like_no_comment')) {
1332                         // Update when it is a comment
1333                         $update_commented = in_array($posted_item['gravity'], [self::GRAVITY_PARENT, self::GRAVITY_COMMENT]);
1334                 } else {
1335                         // Update when it isn't a follow or tag verb
1336                         $update_commented = !in_array($posted_item['verb'], [Activity::FOLLOW, Activity::TAG]);
1337                 }
1338
1339                 if ($update_commented) {
1340                         $fields = ['commented' => DateTimeFormat::utcNow(), 'changed' => DateTimeFormat::utcNow()];
1341                 } else {
1342                         $fields = ['changed' => DateTimeFormat::utcNow()];
1343                 }
1344
1345                 Post::update($fields, ['uri-id' => $posted_item['parent-uri-id'], 'uid' => $posted_item['uid']]);
1346
1347                 // In that function we check if this is a group post. Additionally we delete the item under certain circumstances
1348                 if (self::tagDeliver($posted_item['uid'], $post_user_id)) {
1349                         // Get the user information for the logging
1350                         $user = User::getById($uid);
1351
1352                         Logger::notice('Item had been deleted', ['id' => $post_user_id, 'user' => $uid, 'account-type' => $user['account-type']]);
1353                         return 0;
1354                 }
1355
1356                 if ($notify) {
1357                         DI::contentItem()->postProcessPost($posted_item);
1358                 } else {
1359                         Hook::callAll('post_remote_end', $posted_item);
1360                 }
1361
1362                 if ($posted_item['gravity'] === self::GRAVITY_PARENT) {
1363                         self::addShadow($post_user_id);
1364                 } else {
1365                         self::addShadowPost($post_user_id);
1366                 }
1367
1368                 self::updateContact($posted_item);
1369
1370                 Post\UserNotification::setNotification($posted_item['uri-id'], $posted_item['uid']);
1371
1372                 // Distribute items to users who subscribed to their tags
1373                 self::distributeByTags($posted_item);
1374
1375                 // Automatically reshare the item if the "remote_self" option is selected
1376                 self::autoReshare($posted_item);
1377
1378                 $transmit = $notify || ($posted_item['visible'] && ($parent_origin || $posted_item['origin']));
1379
1380                 if ($transmit) {
1381                         if ($posted_item['uid'] && Contact\User::isBlocked($posted_item['author-id'], $posted_item['uid'])) {
1382                                 Logger::info('Message from blocked author will not be relayed', ['item' => $posted_item['id'], 'uri' => $posted_item['uri'], 'cid' => $posted_item['author-id']]);
1383                                 $transmit = false;
1384                         }
1385                         if ($transmit && $posted_item['uid'] && Contact\User::isBlocked($posted_item['owner-id'], $posted_item['uid'])) {
1386                                 Logger::info('Message from blocked owner will not be relayed', ['item' => $posted_item['id'], 'uri' => $posted_item['uri'], 'cid' => $posted_item['owner-id']]);
1387                                 $transmit = false;
1388                         }
1389                         if ($transmit && !empty($posted_item['causer-id']) && $posted_item['uid'] && Contact\User::isBlocked($posted_item['causer-id'], $posted_item['uid'])) {
1390                                 Logger::info('Message from blocked causer will not be relayed', ['item' => $posted_item['id'], 'uri' => $posted_item['uri'], 'cid' => $posted_item['causer-id']]);
1391                                 $transmit = false;
1392                         }
1393
1394                         // Don't relay participation messages
1395                         if (($posted_item['verb'] == Activity::FOLLOW) &&
1396                                 (!$posted_item['origin'] || ($posted_item['author-id'] != Contact::getPublicIdByUserId($uid)))
1397                         ) {
1398                                 Logger::info('Participation messages will not be relayed', ['item' => $posted_item['id'], 'uri' => $posted_item['uri'], 'verb' => $posted_item['verb']]);
1399                                 $transmit = false;
1400                         }
1401                 }
1402
1403                 if (!empty($source) && ($transmit || DI::config()->get('debug', 'store_source'))) {
1404                         Post\Activity::insert($item['uri-id'], $source);
1405                 }
1406
1407                 if ($transmit) {
1408                         Worker::add(['priority' => $priority, 'dont_fork' => true], 'Notifier', $notify_type, (int)$posted_item['uri-id'], (int)$posted_item['uid']);
1409                 }
1410
1411                 // Fill the cache with the rendered content.
1412                 if (in_array($posted_item['gravity'], [self::GRAVITY_PARENT, self::GRAVITY_COMMENT]) && ($posted_item['uid'] == 0)) {
1413                         self::updateDisplayCache($posted_item['uri-id']);
1414                 }
1415
1416                 if ($inserted) {
1417                         Post\Engagement::storeFromItem($posted_item);
1418                 }
1419
1420                 return $post_user_id;
1421         }
1422
1423         /**
1424          * Fetch the post reason for a given item array
1425          *
1426          * @param array $item
1427          *
1428          * @return integer
1429          */
1430         public static function getPostReason(array $item): int
1431         {
1432                 $actor = ($item['gravity'] == self::GRAVITY_PARENT) ? $item['owner-id'] : $item['author-id'];
1433                 if (empty($item['origin']) && ($item['uid'] != 0) && Contact::isSharing($actor, $item['uid'])) {
1434                         return self::PR_FOLLOWER;
1435                 }
1436
1437                 if (!empty($item['origin']) && empty($item['post-reason'])) {
1438                         return self::PR_LOCAL;
1439                 }
1440
1441                 return $item['post-reason'] ?? self::PR_NONE;
1442         }
1443
1444         /**
1445          * Update the display cache
1446          *
1447          * @param integer $uri_id
1448          * @return void
1449          * @throws InternalServerErrorException
1450          * @throws \ImagickException
1451          */
1452         public static function updateDisplayCache(int $uri_id)
1453         {
1454                 $item = Post::selectFirst(self::DISPLAY_FIELDLIST, ['uri-id' => $uri_id]);
1455                 if (!$item) {
1456                         return;
1457                 }
1458
1459                 self::prepareBody($item, false, false, true);
1460         }
1461
1462         /**
1463          * Change the owner of a parent item if it had been shared by a group
1464          *
1465          * (public) group posts in the new format consist of the regular post by the author
1466          * followed by an announce message sent from the group account.
1467          * Changing the owner helps in grouping group posts.
1468          *
1469          * @param array $item
1470          * @return void
1471          */
1472         private static function setOwnerforResharedItem(array $item)
1473         {
1474                 $parent = Post::selectFirst(
1475                         ['id', 'causer-id', 'owner-id', 'author-id', 'author-link', 'origin', 'post-reason'],
1476                         ['uri-id' => $item['thr-parent-id'], 'uid' => $item['uid']]
1477                 );
1478                 if (!DBA::isResult($parent)) {
1479                         Logger::error('Parent not found', ['uri-id' => $item['thr-parent-id'], 'uid' => $item['uid']]);
1480                         return;
1481                 }
1482
1483                 $author = Contact::selectFirst(['url', 'contact-type', 'network'], ['id' => $item['author-id']]);
1484                 if (!DBA::isResult($author)) {
1485                         Logger::error('Author not found', ['id' => $item['author-id']]);
1486                         return;
1487                 }
1488
1489                 $self_contact = Contact::selectFirst(['id'], ['uid' => $item['uid'], 'self' => true]);
1490                 $self = !empty($self_contact) ? $self_contact['id'] : 0;
1491
1492                 $cid = Contact::getIdForURL($author['url'], $item['uid']);
1493                 if (empty($cid) || (!Contact::isSharing($cid, $item['uid']) && ($cid != $self))) {
1494                         Logger::info('The resharer is not a following contact: quit', ['resharer' => $author['url'], 'uid' => $item['uid'], 'cid' => $cid]);
1495                         return;
1496                 }
1497
1498                 if ($author['contact-type'] != Contact::TYPE_COMMUNITY) {
1499                         if ($parent['post-reason'] == self::PR_ANNOUNCEMENT) {
1500                                 Logger::info('The parent is already marked as announced: quit', ['causer' => $parent['causer-id'], 'owner' => $parent['owner-id'], 'author' => $parent['author-id'], 'uid' => $item['uid']]);
1501                                 return;
1502                         }
1503
1504                         if (Contact::isSharing($parent['owner-id'], $item['uid'])) {
1505                                 Logger::info('The resharer is no group: quit', ['resharer' => $item['author-id'], 'owner' => $parent['owner-id'], 'author' => $parent['author-id'], 'uid' => $item['uid']]);
1506                                 return;
1507                         }
1508                 }
1509
1510                 self::update(['post-reason' => self::PR_ANNOUNCEMENT, 'causer-id' => $item['author-id']], ['id' => $parent['id']]);
1511                 Logger::info('Set announcement post-reason', ['uri-id' => $item['uri-id'], 'thr-parent-id' => $item['thr-parent-id'], 'uid' => $item['uid']]);
1512         }
1513
1514         /**
1515          * Distribute the given item to users who subscribed to their tags
1516          *
1517          * @param array $item     Processed item
1518          */
1519         private static function distributeByTags(array $item)
1520         {
1521                 if (($item['uid'] != 0) || ($item['gravity'] != self::GRAVITY_PARENT) || !in_array($item['network'], Protocol::FEDERATED)) {
1522                         return;
1523                 }
1524
1525                 foreach (Tag::getUIDListByURIId($item['uri-id']) as $uid => $tags) {
1526                         $stored = self::storeForUserByUriId($item['uri-id'], $uid, ['post-reason' => self::PR_TAG]);
1527                         Logger::info('Stored item for users', ['uri-id' => $item['uri-id'], 'uid' => $uid, 'stored' => $stored]);
1528                         foreach ($tags as $tag) {
1529                                 $stored = Category::storeFileByURIId($item['uri-id'], $uid, Category::SUBCRIPTION, $tag);
1530                                 Logger::debug('Stored tag subscription for user', ['uri-id' => $item['uri-id'], 'uid' => $uid, $tag, 'stored' => $stored]);
1531                         }
1532                 }
1533         }
1534
1535         /**
1536          * Distributes public items to the receivers
1537          *
1538          * @param integer $itemid      Item ID that should be added
1539          * @param string  $signed_text Original text (for Diaspora signatures), JSON encoded.
1540          * @throws \Exception
1541          */
1542         public static function distribute(int $itemid, string $signed_text = '')
1543         {
1544                 $condition = ["`id` IN (SELECT `parent` FROM `post-user-view` WHERE `id` = ?)", $itemid];
1545                 $parent = Post::selectFirst(['owner-id'], $condition);
1546                 if (!DBA::isResult($parent)) {
1547                         Logger::warning('Item not found', ['condition' => $condition]);
1548                         return;
1549                 }
1550
1551                 // Only distribute public items from native networks
1552                 $condition = [
1553                         'id' => $itemid, 'uid' => 0,
1554                         'network' => array_merge(Protocol::FEDERATED, ['']),
1555                         'visible' => true, 'deleted' => false, 'private' => [self::PUBLIC, self::UNLISTED]
1556                 ];
1557                 $item = Post::selectFirst(array_merge(self::ITEM_FIELDLIST, ['protocol']), $condition);
1558                 if (!DBA::isResult($item)) {
1559                         Logger::warning('Item not found', ['condition' => $condition]);
1560                         return;
1561                 }
1562
1563                 $origin = $item['origin'];
1564
1565                 $users = [];
1566
1567                 /// @todo add a field "pcid" in the contact table that refers to the public contact id.
1568                 $owner = DBA::selectFirst('contact', ['url', 'nurl', 'alias'], ['id' => $parent['owner-id']]);
1569                 if (!DBA::isResult($owner)) {
1570                         return;
1571                 }
1572
1573                 $condition = ['nurl' => $owner['nurl'], 'rel' => [Contact::SHARING, Contact::FRIEND]];
1574                 $contacts = DBA::select('contact', ['uid'], $condition);
1575                 while ($contact = DBA::fetch($contacts)) {
1576                         if ($contact['uid'] == 0) {
1577                                 continue;
1578                         }
1579
1580                         $users[$contact['uid']] = $contact['uid'];
1581                 }
1582                 DBA::close($contacts);
1583
1584                 $condition = ['alias' => $owner['url'], 'rel' => [Contact::SHARING, Contact::FRIEND]];
1585                 $contacts = DBA::select('contact', ['uid'], $condition);
1586                 while ($contact = DBA::fetch($contacts)) {
1587                         if ($contact['uid'] == 0) {
1588                                 continue;
1589                         }
1590
1591                         $users[$contact['uid']] = $contact['uid'];
1592                 }
1593                 DBA::close($contacts);
1594
1595                 if (!empty($owner['alias'])) {
1596                         $condition = ['nurl' => Strings::normaliseLink($owner['alias']), 'rel' => [Contact::SHARING, Contact::FRIEND]];
1597                         $contacts = DBA::select('contact', ['uid'], $condition);
1598                         while ($contact = DBA::fetch($contacts)) {
1599                                 if ($contact['uid'] == 0) {
1600                                         continue;
1601                                 }
1602
1603                                 $users[$contact['uid']] = $contact['uid'];
1604                         }
1605                         DBA::close($contacts);
1606                 }
1607
1608                 $origin_uid = 0;
1609
1610                 if ($item['uri-id'] != $item['parent-uri-id']) {
1611                         $parents = Post::select(['uid', 'origin'], ["`uri-id` = ? AND `uid` != 0", $item['parent-uri-id']]);
1612                         while ($parent = Post::fetch($parents)) {
1613                                 $users[$parent['uid']] = $parent['uid'];
1614                                 if ($parent['origin'] && !$origin) {
1615                                         $origin_uid = $parent['uid'];
1616                                 }
1617                         }
1618                         DBA::close($parents);
1619                 }
1620
1621                 foreach ($users as $uid) {
1622                         if ($origin_uid == $uid) {
1623                                 $item['diaspora_signed_text'] = $signed_text;
1624                         }
1625                         $item['post-reason'] = self::PR_DISTRIBUTE;
1626                         self::storeForUser($item, $uid);
1627                 }
1628         }
1629
1630         /**
1631          * Store a public item defined by their URI-ID for the given users
1632          *
1633          * @param integer $uri_id     URI-ID of the given item
1634          * @param integer $uid        The user that will receive the item entry
1635          * @param array   $fields     Additional fields to be stored
1636          * @param integer $source_uid User id of the source post
1637          * @return integer stored item id
1638          */
1639         public static function storeForUserByUriId(int $uri_id, int $uid, array $fields = [], int $source_uid = 0): int
1640         {
1641                 if ($uid == $source_uid) {
1642                         Logger::warning('target UID must not be be equal to the source UID', ['uri-id' => $uri_id, 'uid' => $uid]);
1643                         return 0;
1644                 }
1645
1646                 $item = Post::selectFirst(array_merge(self::ITEM_FIELDLIST, ['protocol']), ['uri-id' => $uri_id, 'uid' => $source_uid]);
1647                 if (!DBA::isResult($item)) {
1648                         Logger::warning('Item could not be fetched', ['uri-id' => $uri_id, 'uid' => $source_uid]);
1649                         return 0;
1650                 }
1651
1652                 if (($uid != 0) && ($item['gravity'] == self::GRAVITY_PARENT)) {
1653                         $owner = User::getOwnerDataById($uid);
1654                         if (($owner['contact-type'] == User::ACCOUNT_TYPE_COMMUNITY) && !Tag::isMentioned($uri_id, $owner['url'])) {
1655                                 Logger::info('Target user is a group but is not mentioned here, thread will not be stored', ['uid' => $uid, 'uri-id' => $uri_id]);
1656                                 return 0;
1657                         }
1658                 }
1659
1660                 if (($source_uid == 0) && (($item['private'] == self::PRIVATE) || !in_array($item['network'], Protocol::FEDERATED))) {
1661                         Logger::notice('Item is private or not from a federated network. It will not be stored for the user.', ['uri-id' => $uri_id, 'uid' => $uid, 'private' => $item['private'], 'network' => $item['network']]);
1662                         return 0;
1663                 }
1664
1665                 $item['post-reason'] = self::PR_STORED;
1666
1667                 $item = array_merge($item, $fields);
1668
1669                 if (($uid != 0) && Contact::isSharing(($item['gravity'] == Item::GRAVITY_PARENT) ? $item['owner-id'] : $item['author-id'], $uid)) {
1670                         $item['post-reason'] = self::PR_FOLLOWER;
1671                 }
1672
1673                 $is_reshare = ($item['gravity'] == self::GRAVITY_ACTIVITY) && ($item['verb'] == Activity::ANNOUNCE);
1674
1675                 if (($uid != 0) && (($item['gravity'] == self::GRAVITY_PARENT) || $is_reshare) &&
1676                         DI::pConfig()->get($uid, 'system', 'accept_only_sharer') == self::COMPLETION_NONE &&
1677                         !in_array($item['post-reason'], [self::PR_FOLLOWER, self::PR_TAG, self::PR_TO, self::PR_CC, self::PR_ACTIVITY, self::PR_AUDIENCE])
1678                 ) {
1679                         Logger::info('Contact is not a follower, thread will not be stored', ['author' => $item['author-link'], 'uid' => $uid, 'uri-id' => $uri_id, 'post-reason' => $item['post-reason']]);
1680                         return 0;
1681                 }
1682
1683                 $causer = $item['causer-id'] ?: $item['author-id'];
1684
1685                 if (($uri_id != $item['parent-uri-id']) && ($item['gravity'] == self::GRAVITY_COMMENT) && !Post::exists(['uri-id' => $item['parent-uri-id'], 'uid' => $uid])) {
1686                         if (!self::fetchParent($item['parent-uri-id'], $uid, $causer)) {
1687                                 Logger::info('Parent post had not been added', ['uri-id' => $item['parent-uri-id'], 'uid' => $uid, 'causer' => $causer]);
1688                                 return 0;
1689                         }
1690                         Logger::info('Fetched parent post', ['uri-id' => $item['parent-uri-id'], 'uid' => $uid, 'causer' => $causer]);
1691                 } elseif (($uri_id != $item['thr-parent-id']) && $is_reshare && !Post::exists(['uri-id' => $item['thr-parent-id'], 'uid' => $uid])) {
1692                         if (!self::fetchParent($item['thr-parent-id'], $uid, $causer)) {
1693                                 Logger::info('Thread parent had not been added', ['uri-id' => $item['thr-parent-id'], 'uid' => $uid, 'causer' => $causer]);
1694                                 return 0;
1695                         }
1696                         Logger::info('Fetched thread parent', ['uri-id' => $item['thr-parent-id'], 'uid' => $uid, 'causer' => $causer]);
1697                 }
1698
1699                 $stored = self::storeForUser($item, $uid);
1700                 Logger::info('Item stored for user', ['uri-id' => $item['uri-id'], 'uid' => $uid, 'causer' => $causer, 'source-uid' => $source_uid, 'stored' => $stored]);
1701                 return $stored;
1702         }
1703
1704         /**
1705          * Fetch the parent with the given uri-id
1706          *
1707          * @param integer $uri_id
1708          * @param integer $uid
1709          * @param integer $causer
1710          *
1711          * @return integer
1712          */
1713         private static function fetchParent(int $uri_id, int $uid, int $causer): int
1714         {
1715                 // Fetch the origin user for the post
1716                 $origin_uid = self::GetOriginUidForUriId($uri_id, $uid);
1717                 if (is_null($origin_uid)) {
1718                         Logger::info('Origin item was not found', ['uid' => $uid, 'uri-id' => $uri_id]);
1719                         return 0;
1720                 }
1721
1722                 return self::storeForUserByUriId($uri_id, $uid, ['causer-id' => $causer, 'post-reason' => self::PR_FETCHED], $origin_uid);
1723         }
1724
1725         /**
1726          * Returns the origin uid of a post if the given user is allowed to see it.
1727          *
1728          * @param int $uriid
1729          * @param int $uid
1730          * @return int
1731          */
1732         private static function GetOriginUidForUriId(int $uriid, int $uid)
1733         {
1734                 if (Post::exists(['uri-id' => $uriid, 'uid' => $uid])) {
1735                         return $uid;
1736                 }
1737
1738                 $post = Post::selectFirst(['uid', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'private'], ['uri-id' => $uriid, 'origin' => true]);
1739                 if (!empty($post)) {
1740                         if (in_array($post['private'], [Item::PUBLIC, Item::UNLISTED])) {
1741                                 return $post['uid'];
1742                         }
1743
1744                         $pcid = Contact::getPublicIdByUserId($uid);
1745                         if (empty($pcid)) {
1746                                 return null;
1747                         }
1748
1749                         foreach (Item::enumeratePermissions($post, true) as $receiver) {
1750                                 if ($receiver == $pcid) {
1751                                         return $post['uid'];
1752                                 }
1753                         }
1754
1755                         return null;
1756                 }
1757
1758                 if (Post::exists(['uri-id' => $uriid, 'uid' => 0])) {
1759                         return 0;
1760                 }
1761
1762                 // When the post belongs to a a group then all group users are allowed to access it
1763                 foreach (Tag::getByURIId($uriid, [Tag::MENTION, Tag::EXCLUSIVE_MENTION]) as $tag) {
1764                         if (DBA::exists('contact', ['uid' => $uid, 'nurl' => Strings::normaliseLink($tag['url']), 'contact-type' => Contact::TYPE_COMMUNITY])) {
1765                                 $target_uid = User::getIdForURL($tag['url']);
1766                                 if (!empty($target_uid)) {
1767                                         return $target_uid;
1768                                 }
1769                         }
1770                 }
1771
1772                 return null;
1773         }
1774
1775         /**
1776          * Store a public item array for the given users
1777          *
1778          * @param array   $item   The item entry that will be stored
1779          * @param integer $uid    The user that will receive the item entry
1780          * @return integer stored item id
1781          * @throws \Exception
1782          */
1783         private static function storeForUser(array $item, int $uid): int
1784         {
1785                 $post = Post::selectFirst(['id'], ['uri-id' => $item['uri-id'], 'uid' => $uid]);
1786                 if (!empty($post['id'])) {
1787                         if (!empty($item['event-id'])) {
1788                                 $event_post = Post::selectFirst(['event-id'], ['uri-id' => $item['uri-id'], 'uid' => $uid]);
1789                                 if (!empty($event_post['event-id'])) {
1790                                         $event = DBA::selectFirst('event', ['edited', 'start', 'finish', 'summary', 'desc', 'location', 'nofinish'], ['id' => $item['event-id']]);
1791                                         if (!empty($event)) {
1792                                                 // We aren't using "Event::store" here, since we don't want to trigger any further action
1793                                                 $ret = DBA::update('event', $event, ['id' => $event_post['event-id']]);
1794                                                 Logger::info('Event updated', ['uid' => $uid, 'source-event' => $item['event-id'], 'target-event' => $event_post['event-id'], 'ret' => $ret]);
1795                                         }
1796                                 }
1797                         }
1798                         Logger::info('Item already exists', ['uri-id' => $item['uri-id'], 'uid' => $uid, 'id' => $post['id']]);
1799                         return $post['id'];
1800                 }
1801
1802                 // Data from the "post-user" table
1803                 unset($item['id']);
1804                 unset($item['mention']);
1805                 unset($item['starred']);
1806                 unset($item['unseen']);
1807                 unset($item['psid']);
1808                 unset($item['pinned']);
1809                 unset($item['ignored']);
1810                 unset($item['pubmail']);
1811                 unset($item['event-id']);
1812                 unset($item['hidden']);
1813                 unset($item['notification-type']);
1814
1815                 // Data from the "post-delivery-data" table
1816                 unset($item['postopts']);
1817                 unset($item['inform']);
1818
1819                 $item['uid'] = $uid;
1820                 $item['origin'] = 0;
1821                 $item['wall'] = 0;
1822
1823                 $notify = false;
1824                 if ($item['gravity'] == self::GRAVITY_PARENT) {
1825                         $contact = DBA::selectFirst('contact', [], ['id' => $item['contact-id'], 'self' => false]);
1826                         if (DBA::isResult($contact)) {
1827                                 $notify = self::isRemoteSelf($contact, $item);
1828                                 $item['wall'] = (bool)$notify;
1829                         }
1830                 }
1831
1832                 $item['contact-id'] = self::contactId($item);
1833                 $distributed = self::insert($item, $notify);
1834
1835                 if (!$distributed) {
1836                         Logger::info("Distributed item wasn't stored", ['uri-id' => $item['uri-id'], 'user' => $uid]);
1837                 } else {
1838                         Logger::info('Distributed item was stored', ['uri-id' => $item['uri-id'], 'user' => $uid, 'stored' => $distributed]);
1839                 }
1840                 return $distributed;
1841         }
1842
1843         /**
1844          * Add a shadow entry for a given item id that is a thread starter
1845          *
1846          * We store every public item entry additionally with the user id "0".
1847          * This is used for the community page and for the search.
1848          * It is planned that in the future we will store public item entries only once.
1849          *
1850          * @param integer $itemid Item ID that should be added
1851          * @throws \Exception
1852          */
1853         private static function addShadow(int $itemid)
1854         {
1855                 $fields = ['uid', 'private', 'visible', 'deleted', 'network', 'uri-id'];
1856                 $condition = ['id' => $itemid, 'gravity' => self::GRAVITY_PARENT];
1857                 $item = Post::selectFirst($fields, $condition);
1858
1859                 if (!DBA::isResult($item)) {
1860                         return;
1861                 }
1862
1863                 // is it already a copy?
1864                 if (($itemid == 0) || ($item['uid'] == 0)) {
1865                         return;
1866                 }
1867
1868                 // Is it a visible public post?
1869                 if (!$item["visible"] || $item["deleted"]  || ($item["private"] == self::PRIVATE)) {
1870                         return;
1871                 }
1872
1873                 // is it an entry from a connector? Only add an entry for natively connected networks
1874                 if (!in_array($item["network"], array_merge(Protocol::FEDERATED, ['']))) {
1875                         return;
1876                 }
1877
1878                 if (Post::exists(['uri-id' => $item['uri-id'], 'uid' => 0])) {
1879                         return;
1880                 }
1881
1882                 $item = Post::selectFirst(array_merge(self::ITEM_FIELDLIST, ['protocol']), ['id' => $itemid]);
1883
1884                 if (DBA::isResult($item)) {
1885                         // Preparing public shadow (removing user specific data)
1886                         $item['uid'] = 0;
1887                         unset($item['id']);
1888                         unset($item['parent']);
1889                         unset($item['wall']);
1890                         unset($item['mention']);
1891                         unset($item['origin']);
1892                         unset($item['starred']);
1893                         unset($item['postopts']);
1894                         unset($item['inform']);
1895                         unset($item['post-reason']);
1896                         if ($item['uri-id'] == $item['parent-uri-id']) {
1897                                 $item['contact-id'] = $item['owner-id'];
1898                         } else {
1899                                 $item['contact-id'] = $item['author-id'];
1900                         }
1901
1902                         $public_shadow = self::insert($item);
1903
1904                         Logger::info('Stored public shadow', ['thread' => $itemid, 'id' => $public_shadow]);
1905                 }
1906         }
1907
1908         /**
1909          * Add a shadow entry for a given item id that is a comment
1910          *
1911          * This function does the same like the function above - but for comments
1912          *
1913          * @param integer $itemid Item ID that should be added
1914          * @throws \Exception
1915          */
1916         private static function addShadowPost(int $itemid)
1917         {
1918                 $item = Post::selectFirst(array_merge(self::ITEM_FIELDLIST, ['protocol']), ['id' => $itemid]);
1919                 if (!DBA::isResult($item)) {
1920                         return;
1921                 }
1922
1923                 // Is it a toplevel post?
1924                 if ($item['gravity'] == self::GRAVITY_PARENT) {
1925                         self::addShadow($itemid);
1926                         return;
1927                 }
1928
1929                 // Is this a shadow entry?
1930                 if ($item['uid'] == 0) {
1931                         return;
1932                 }
1933
1934                 // Is there a shadow parent?
1935                 if (!Post::exists(['uri-id' => $item['parent-uri-id'], 'uid' => 0])) {
1936                         return;
1937                 }
1938
1939                 // Is there already a shadow entry?
1940                 if (Post::exists(['uri-id' => $item['uri-id'], 'uid' => 0])) {
1941                         return;
1942                 }
1943
1944                 // Save "origin" and "parent" state
1945                 $origin = $item['origin'];
1946                 $parent = $item['parent'];
1947
1948                 // Preparing public shadow (removing user specific data)
1949                 $item['uid'] = 0;
1950                 unset($item['id']);
1951                 unset($item['parent']);
1952                 unset($item['wall']);
1953                 unset($item['mention']);
1954                 unset($item['origin']);
1955                 unset($item['starred']);
1956                 unset($item['postopts']);
1957                 unset($item['inform']);
1958                 unset($item['post-reason']);
1959                 $item['contact-id'] = Contact::getIdForURL($item['author-link']);
1960
1961                 $public_shadow = self::insert($item);
1962
1963                 Logger::info('Stored public shadow', ['uri-id' => $item['uri-id'], 'id' => $public_shadow]);
1964
1965                 // If this was a comment to a Diaspora post we don't get our comment back.
1966                 // This means that we have to distribute the comment by ourselves.
1967                 if ($origin && Post::exists(['id' => $parent, 'network' => Protocol::DIASPORA])) {
1968                         self::distribute($public_shadow);
1969                 }
1970         }
1971
1972         /**
1973          * Adds a language specification in a "language" element of given $arr.
1974          * Expects "body" element to exist in $arr.
1975          *
1976          * @param array $item
1977          * @return string detected language
1978          * @throws \Text_LanguageDetect_Exception
1979          */
1980         private static function getLanguage(array $item): string
1981         {
1982                 if (!empty($item['language'])) {
1983                         return $item['language'];
1984                 }
1985
1986                 if (!in_array($item['gravity'], [self::GRAVITY_PARENT, self::GRAVITY_COMMENT]) || empty($item['body'])) {
1987                         return '';
1988                 }
1989
1990                 $languages = self::getLanguageArray(trim($item['title'] . "\n" . $item['body']), 3);
1991                 if (empty($languages)) {
1992                         return '';
1993                 }
1994
1995                 return json_encode($languages);
1996         }
1997
1998         /**
1999          * Get a language array from a given text
2000          *
2001          * @param string  $body
2002          * @param integer $count
2003          * @return array
2004          */
2005         public static function getLanguageArray(string $body, int $count): array
2006         {
2007                 // Convert attachments to links
2008                 $naked_body = BBCode::removeAttachment($body);
2009                 if (empty($naked_body)) {
2010                         return [];
2011                 }
2012
2013                 // Remove links and pictures
2014                 $naked_body = BBCode::removeLinks($naked_body);
2015
2016                 // Convert the title and the body to plain text
2017                 $naked_body = BBCode::toPlaintext($naked_body);
2018
2019                 // Remove possibly remaining links
2020                 $naked_body = preg_replace(Strings::autoLinkRegEx(), '', $naked_body);
2021
2022                 if (empty($naked_body)) {
2023                         return [];
2024                 }
2025
2026                 $naked_body = self::getDominantLanguage($naked_body);
2027
2028                 $availableLanguages = DI::l10n()->getAvailableLanguages(true);
2029                 $availableLanguages = DI::l10n()->convertForLanguageDetection($availableLanguages);
2030
2031                 $ld = new Language(array_keys($availableLanguages));
2032                 return $ld->detect($naked_body)->limit(0, $count)->close() ?: [];
2033         }
2034
2035         /**
2036          * Check if latin or non latin are dominant in the body and only return the dominant one
2037          *
2038          * @param string $body
2039          * @return string
2040          */
2041         private static function getDominantLanguage(string $body): string
2042         {
2043                 $latin = '';
2044                 $non_latin = '';
2045                 for ($i = 0; $i < mb_strlen($body); $i++) {
2046                         $character = mb_substr($body, $i, 1);
2047                         $ord = mb_ord($character);
2048
2049                         // We add the most common characters to both strings.
2050                         if (($ord <= 64) || ($ord >= 91 && $ord <= 96) || ($ord >= 123 && $ord <= 191) || in_array($ord, [215, 247]) || ($ord >= 697 && $ord <= 735) || ($ord > 65535)) {
2051                                 $latin .= $character;
2052                                 $non_latin .= $character;
2053                         } elseif ($ord < 768) {
2054                                 $latin .= $character;
2055                         } else {
2056                                 $non_latin .= $character;
2057                         }
2058                 }
2059                 return (mb_strlen($latin) > mb_strlen($non_latin)) ? $latin : $non_latin;
2060         }
2061
2062         public static function getLanguageMessage(array $item): string
2063         {
2064                 $iso639 = new \Matriphe\ISO639\ISO639;
2065
2066                 $used_languages = '';
2067                 foreach (json_decode($item['language'], true) as $language => $reliability) {
2068                         $used_languages .= $iso639->languageByCode1($language) . ' (' . $language . "): " . number_format($reliability, 5) . '\n';
2069                 }
2070                 $used_languages = DI::l10n()->t('Detected languages in this post:\n%s', $used_languages);
2071                 return $used_languages;
2072         }
2073
2074         /**
2075          * Creates an unique guid out of a given uri.
2076          * This function is used for messages outside the fediverse (Connector posts, feeds, Mails, ...)
2077          * Posts that are created on this system are using System::createUUID.
2078          * Received ActivityPub posts are using Processor::getGUIDByURL.
2079          *
2080          * @param string      $uri  uri of an item entry
2081          * @param string|null $host hostname for the GUID prefix
2082          * @return string Unique guid
2083          * @throws \Exception
2084          */
2085         public static function guidFromUri(string $uri, string $host = null): string
2086         {
2087                 // Our regular guid routine is using this kind of prefix as well
2088                 // We have to avoid that different routines could accidentally create the same value
2089                 $parsed = parse_url($uri);
2090
2091                 // Remove the scheme to make sure that "https" and "http" doesn't make a difference
2092                 unset($parsed['scheme']);
2093
2094                 $hostPart = $host ?: $parsed['host'] ?? '';
2095                 if (!$hostPart) {
2096                         Logger::warning('Empty host GUID part', ['uri' => $uri, 'host' => $host, 'parsed' => $parsed, 'callstack' => System::callstack(10)]);
2097                 }
2098
2099                 // Glue it together to be able to make a hash from it
2100                 if (!empty($parsed)) {
2101                         $host_id = implode('/', $parsed);
2102                 } else {
2103                         $host_id = $uri;
2104                 }
2105
2106                 // Use a mixture of several hashes to provide some GUID like experience
2107                 return hash('crc32', $hostPart) . '-' . hash('joaat', $host_id) . '-' . hash('fnv164', $host_id);
2108         }
2109
2110         /**
2111          * generate an unique URI
2112          *
2113          * @param string $guid An existing GUID (Otherwise it will be generated)
2114          *
2115          * @return string
2116          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2117          */
2118         public static function newURI(string $guid = ''): string
2119         {
2120                 if ($guid == '') {
2121                         $guid = System::createUUID();
2122                 }
2123
2124                 return DI::baseUrl() . '/objects/' . $guid;
2125         }
2126
2127         /**
2128          * Set "success_update" and "last-item" to the date of the last time we heard from this contact
2129          *
2130          * This can be used to filter for inactive contacts.
2131          * Only do this for public postings to avoid privacy problems, since poco data is public.
2132          * Don't set this value if it isn't from the owner (could be an author that we don't know)
2133          *
2134          * @param array $arr Contains the just posted item record
2135          * @throws \Exception
2136          */
2137         private static function updateContact(array $arr)
2138         {
2139                 // Unarchive the author
2140                 $contact = DBA::selectFirst('contact', [], ['id' => $arr["author-id"]]);
2141                 if (DBA::isResult($contact)) {
2142                         Contact::unmarkForArchival($contact);
2143                 }
2144
2145                 // Unarchive the contact if it's not our own contact
2146                 $contact = DBA::selectFirst('contact', [], ['id' => $arr["contact-id"], 'self' => false]);
2147                 if (DBA::isResult($contact)) {
2148                         Contact::unmarkForArchival($contact);
2149                 }
2150
2151                 /// @todo On private posts we could obfuscate the date
2152                 $update = ($arr['private'] != self::PRIVATE) || in_array($arr['network'], Protocol::FEDERATED);
2153
2154                 // Is it a group? Then we don't care about the rules from above
2155                 if (!$update && in_array($arr["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN]) && ($arr["parent-uri-id"] === $arr["uri-id"])) {
2156                         if (DBA::exists('contact', ['id' => $arr['contact-id'], 'forum' => true])) {
2157                                 $update = true;
2158                         }
2159                 }
2160
2161                 if ($update) {
2162                         // The "self" contact id is used (for example in the connectors) when the contact is unknown
2163                         // So we have to ensure to only update the last item when it had been our own post,
2164                         // or it had been done by a "regular" contact.
2165                         if (!empty($arr['wall'])) {
2166                                 $condition = ['id' => $arr['contact-id']];
2167                         } else {
2168                                 $condition = ['id' => $arr['contact-id'], 'self' => false];
2169                         }
2170                         Contact::update(['failed' => false, 'local-data' => true, 'success_update' => $arr['received'], 'last-item' => $arr['received']], $condition);
2171                 }
2172                 // Now do the same for the system wide contacts with uid=0
2173                 if ($arr['private'] != self::PRIVATE) {
2174                         Contact::update(
2175                                 ['failed' => false, 'local-data' => true, 'success_update' => $arr['received'], 'last-item' => $arr['received']],
2176                                 ['id' => $arr['owner-id']]
2177                         );
2178
2179                         if ($arr['owner-id'] != $arr['author-id']) {
2180                                 Contact::update(
2181                                         ['failed' => false, 'local-data' => true, 'success_update' => $arr['received'], 'last-item' => $arr['received']],
2182                                         ['id' => $arr['author-id']]
2183                                 );
2184                         }
2185                 }
2186         }
2187
2188         public static function setHashtags(string $body): string
2189         {
2190                 $body = BBCode::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) {
2191                         $tags = BBCode::getTags($body);
2192
2193                         // No hashtags?
2194                         if (!count($tags)) {
2195                                 return $body;
2196                         }
2197
2198                         // This sorting is important when there are hashtags that are part of other hashtags
2199                         // Otherwise there could be problems with hashtags like #test and #test2
2200                         // Because of this we are sorting from the longest to the shortest tag.
2201                         usort($tags, function ($a, $b) {
2202                                 return strlen($b) <=> strlen($a);
2203                         });
2204
2205                         $URLSearchString = "^\[\]";
2206
2207                         // All hashtags should point to the home server if "local_tags" is activated
2208                         if (DI::config()->get('system', 'local_tags')) {
2209                                 $body = preg_replace(
2210                                         "/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
2211                                         "#[url=" . DI::baseUrl() . "/search?tag=$2]$2[/url]",
2212                                         $body
2213                                 );
2214                         }
2215
2216                         // mask hashtags inside of url, bookmarks and attachments to avoid urls in urls
2217                         $body = preg_replace_callback(
2218                                 "/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
2219                                 function ($match) {
2220                                         return ("[url=" . str_replace("#", "&num;", $match[1]) . "]" . str_replace("#", "&num;", $match[2]) . "[/url]");
2221                                 },
2222                                 $body
2223                         );
2224
2225                         $body = preg_replace_callback(
2226                                 "/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism",
2227                                 function ($match) {
2228                                         return ("[bookmark=" . str_replace("#", "&num;", $match[1]) . "]" . str_replace("#", "&num;", $match[2]) . "[/bookmark]");
2229                                 },
2230                                 $body
2231                         );
2232
2233                         $body = preg_replace_callback(
2234                                 "/\[attachment (.*?)\](.*?)\[\/attachment\]/ism",
2235                                 function ($match) {
2236                                         return ("[attachment " . str_replace("#", "&num;", $match[1]) . "]" . $match[2] . "[/attachment]");
2237                                 },
2238                                 $body
2239                         );
2240
2241                         // Repair recursive urls
2242                         $body = preg_replace(
2243                                 "/&num;\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
2244                                 "&num;$2",
2245                                 $body
2246                         );
2247
2248                         foreach ($tags as $tag) {
2249                                 if ((strpos($tag, '#') !== 0) || strpos($tag, '[url=') || strlen($tag) < 2 || $tag[1] == '#') {
2250                                         continue;
2251                                 }
2252
2253                                 $basetag = str_replace('_', ' ', substr($tag, 1));
2254                                 $newtag = '#[url=' . DI::baseUrl() . '/search?tag=' . $basetag . ']' . $basetag . '[/url]';
2255
2256                                 $body = str_replace($tag, $newtag, $body);
2257                         }
2258
2259                         // Convert back the masked hashtags
2260                         $body = str_replace("&num;", "#", $body);
2261
2262                         return $body;
2263                 });
2264
2265                 return $body;
2266         }
2267
2268         /**
2269          * look for mention tags and setup a second delivery chain for group/community posts if appropriate
2270          *
2271          * @param int $uid
2272          * @param int $item_id
2273          * @return boolean true if item was deleted, else false
2274          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2275          * @throws \ImagickException
2276          */
2277         private static function tagDeliver(int $uid, int $item_id): bool
2278         {
2279                 $owner = User::getOwnerDataById($uid);
2280                 if (!DBA::isResult($owner)) {
2281                         Logger::warning('User not found, quitting here.', ['uid' => $uid]);
2282                         return false;
2283                 }
2284
2285                 if ($owner['contact-type'] != User::ACCOUNT_TYPE_COMMUNITY) {
2286                         Logger::debug('Owner is no community, quitting here.', ['uid' => $uid, 'id' => $item_id]);
2287                         return false;
2288                 }
2289
2290                 $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $item_id, 'gravity' => [self::GRAVITY_PARENT, self::GRAVITY_COMMENT], 'origin' => false]);
2291                 if (!DBA::isResult($item)) {
2292                         Logger::debug('Post is an activity or origin or not found at all, quitting here.', ['id' => $item_id]);
2293                         return false;
2294                 }
2295
2296                 if ($item['gravity'] == self::GRAVITY_PARENT) {
2297                         if (Tag::isMentioned($item['uri-id'], $owner['url'])) {
2298                                 Logger::info('Mention found in tag.', ['uri' => $item['uri'], 'uid' => $uid, 'id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
2299                         } else {
2300                                 Logger::info('Top-level post without mention is deleted.', ['uri' => $item['uri'], $uid, 'id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
2301                                 Post\User::delete(['uri-id' => $item['uri-id'], 'uid' => $item['uid']]);
2302                                 return true;
2303                         }
2304
2305                         $arr = ['item' => $item, 'user' => $owner];
2306
2307                         Hook::callAll('tagged', $arr);
2308                 } else {
2309                         if (Tag::isMentioned($item['parent-uri-id'], $owner['url'])) {
2310                                 Logger::info('Mention found in parent tag.', ['uri' => $item['uri'], 'uid' => $uid, 'id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
2311                         } else {
2312                                 Logger::debug('No mentions found in parent, quitting here.', ['id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
2313                                 return false;
2314                         }
2315                 }
2316
2317                 Logger::info('Community post will be distributed', ['uri' => $item['uri'], 'uid' => $uid, 'id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
2318
2319                 if ($owner['page-flags'] == User::PAGE_FLAGS_PRVGROUP) {
2320                         $allow_cid = '';
2321                         $allow_gid = '<' . Circle::FOLLOWERS . '>';
2322                         $deny_cid  = '';
2323                         $deny_gid  = '';
2324                         self::performActivity($item['id'], 'announce', $uid, $allow_cid, $allow_gid, $deny_cid, $deny_gid);
2325                 } else {
2326                         self::performActivity($item['id'], 'announce', $uid);
2327                 }
2328
2329                 Logger::info('Community post had been distributed', ['uri' => $item['uri'], 'uid' => $uid, 'id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
2330                 return false;
2331         }
2332
2333         /**
2334          * Automatically reshare the item if the "remote_self" option is selected
2335          *
2336          * @param array $item
2337          * @return void
2338          */
2339         private static function autoReshare(array $item)
2340         {
2341                 if ($item['gravity'] != self::GRAVITY_PARENT) {
2342                         return;
2343                 }
2344
2345                 $cdata = Contact::getPublicAndUserContactID($item['author-id'], $item['uid']);
2346                 if (empty($cdata['user']) || ($cdata['user'] != $item['contact-id'])) {
2347                         return;
2348                 }
2349
2350                 if (!DBA::exists('contact', ['id' => $cdata['user'], 'remote_self' => LocalRelationship::MIRROR_NATIVE_RESHARE])) {
2351                         return;
2352                 }
2353
2354                 if (!in_array($item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
2355                         return;
2356                 }
2357
2358                 if (User::getById($item['uid'], ['blocked'])['blocked'] ?? false) {
2359                         return;
2360                 }
2361
2362                 Logger::info('Automatically reshare item', ['uid' => $item['uid'], 'id' => $item['id'], 'guid' => $item['guid'], 'uri-id' => $item['uri-id']]);
2363
2364                 self::performActivity($item['id'], 'announce', $item['uid']);
2365         }
2366
2367         public static function isRemoteSelf(array $contact, array &$datarray): bool
2368         {
2369                 if ($contact['remote_self'] != LocalRelationship::MIRROR_OWN_POST) {
2370                         return false;
2371                 }
2372
2373                 // Prevent the forwarding of posts that are forwarded
2374                 if (!empty($datarray['extid']) && ($datarray['extid'] == Protocol::DFRN)) {
2375                         Logger::info('Already forwarded');
2376                         return false;
2377                 }
2378
2379                 // Prevent to forward already forwarded posts
2380                 if ($datarray['app'] == DI::baseUrl()->getHost()) {
2381                         Logger::info('Already forwarded (second test)');
2382                         return false;
2383                 }
2384
2385                 // Only forward posts
2386                 if ($datarray['verb'] != Activity::POST) {
2387                         Logger::info('No post');
2388                         return false;
2389                 }
2390
2391                 if (($contact['network'] != Protocol::FEED) && ($datarray['private'] == self::PRIVATE)) {
2392                         Logger::info('Not public');
2393                         return false;
2394                 }
2395
2396                 if (User::getById($contact['uid'], ['blocked'])['blocked'] ?? false) {
2397                         Logger::info('User is blocked', ['contact' => $contact]);
2398                         return false;
2399                 }
2400
2401                 $datarray2 = $datarray;
2402                 Logger::info('remote-self start', ['contact' => $contact['url'], 'remote_self' => $contact['remote_self'], 'item' => $datarray]);
2403
2404                 $self = DBA::selectFirst(
2405                         'contact',
2406                         ['id', 'name', 'url', 'thumb'],
2407                         ['uid' => $contact['uid'], 'self' => true]
2408                 );
2409                 if (!DBA::isResult($self)) {
2410                         Logger::error('Self contact not found', ['uid' => $contact['uid']]);
2411                         return false;
2412                 }
2413
2414                 $datarray['contact-id'] = $self['id'];
2415
2416                 $datarray['author-name']   = $datarray['owner-name']   = $self['name'];
2417                 $datarray['author-link']   = $datarray['owner-link']   = $self['url'];
2418                 $datarray['author-avatar'] = $datarray['owner-avatar'] = $self['thumb'];
2419
2420                 unset($datarray['edited']);
2421
2422                 unset($datarray['network']);
2423                 unset($datarray['owner-id']);
2424                 unset($datarray['author-id']);
2425
2426                 if ($contact['network'] != Protocol::FEED) {
2427                         $old_uri_id = $datarray['uri-id'] ?? 0;
2428                         $datarray['guid'] = System::createUUID();
2429                         unset($datarray['plink']);
2430                         $datarray['uri'] = self::newURI($datarray['guid']);
2431                         $datarray['uri-id'] = ItemURI::getIdByURI($datarray['uri']);
2432                         $datarray['extid'] = Protocol::DFRN;
2433                         $urlpart = parse_url($datarray2['author-link']);
2434                         $datarray['app'] = $urlpart['host'];
2435                         if (!empty($old_uri_id)) {
2436                                 Post\Media::copy($old_uri_id, $datarray['uri-id']);
2437                         }
2438
2439                         unset($datarray['parent-uri']);
2440                         unset($datarray['thr-parent']);
2441
2442                         // Store the original post
2443                         $result = self::insert($datarray2);
2444                         Logger::info('remote-self post original item', ['contact' => $contact['url'], 'result' => $result, 'item' => $datarray2]);
2445                 } else {
2446                         $datarray['private'] = self::PUBLIC;
2447                         $datarray['app'] = 'Feed';
2448                         $result = true;
2449                 }
2450
2451                 return (bool)$result;
2452         }
2453
2454         /**
2455          *
2456          * @param string $s
2457          * @param int    $uid
2458          * @param array  $item
2459          * @param int    $cid
2460          * @return string
2461          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2462          * @throws \ImagickException
2463          */
2464         public static function fixPrivatePhotos(string $s, int $uid, array $item = null, int $cid = 0): string
2465         {
2466                 if (DI::config()->get('system', 'disable_embedded')) {
2467                         return $s;
2468                 }
2469
2470                 Logger::info('check for photos');
2471                 $site = substr(DI::baseUrl(), strpos(DI::baseUrl(), '://'));
2472
2473                 $orig_body = $s;
2474                 $new_body = '';
2475
2476                 $img_start = strpos($orig_body, '[img');
2477                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
2478                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
2479
2480                 while (($img_st_close !== false) && ($img_len !== false)) {
2481                         $img_st_close++; // make it point to AFTER the closing bracket
2482                         $image = substr($orig_body, $img_start + $img_st_close, $img_len);
2483
2484                         Logger::info('found photo', ['image' => $image]);
2485
2486                         if (stristr($image, $site . '/photo/')) {
2487                                 // Only embed locally hosted photos
2488                                 $replace = false;
2489                                 $i = basename($image);
2490                                 $i = str_replace(['.jpg', '.png', '.gif'], ['', '', ''], $i);
2491                                 $x = strpos($i, '-');
2492
2493                                 if ($x) {
2494                                         $res = substr($i, $x + 1);
2495                                         $i = substr($i, 0, $x);
2496                                         $photo = Photo::getPhotoForUser($uid, $i, $res);
2497                                         if (DBA::isResult($photo)) {
2498                                                 /*
2499                                                  * Check to see if we should replace this photo link with an embedded image
2500                                                  * 1. No need to do so if the photo is public
2501                                                  * 2. If there's a contact-id provided, see if they're in the access list
2502                                                  *    for the photo. If so, embed it.
2503                                                  * 3. Otherwise, if we have an item, see if the item permissions match the photo
2504                                                  *    permissions, regardless of order but first check to see if they're an exact
2505                                                  *    match to save some processing overhead.
2506                                                  */
2507                                                 if (self::hasPermissions($photo)) {
2508                                                         if ($cid) {
2509                                                                 $recips = self::enumeratePermissions($photo);
2510                                                                 if (in_array($cid, $recips)) {
2511                                                                         $replace = true;
2512                                                                 }
2513                                                         } elseif ($item) {
2514                                                                 if (self::samePermissions($uid, $item, $photo)) {
2515                                                                         $replace = true;
2516                                                                 }
2517                                                         }
2518                                                 }
2519                                                 if ($replace) {
2520                                                         $photo_img = Photo::getImageForPhoto($photo);
2521                                                         // If a custom width and height were specified, apply before embedding
2522                                                         if (preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
2523                                                                 Logger::info('scaling photo');
2524
2525                                                                 $width = intval($match[1]);
2526                                                                 $height = intval($match[2]);
2527
2528                                                                 $photo_img->scaleDown(max($width, $height));
2529                                                         }
2530
2531                                                         $data = $photo_img->asString();
2532                                                         $type = $photo_img->getType();
2533
2534                                                         Logger::info('replacing photo');
2535                                                         $image = 'data:' . $type . ';base64,' . base64_encode($data);
2536                                                         Logger::debug('replaced', ['image' => $image]);
2537                                                 }
2538                                         }
2539                                 }
2540                         }
2541
2542                         $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
2543                         $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
2544                         if ($orig_body === false) {
2545                                 $orig_body = '';
2546                         }
2547
2548                         $img_start = strpos($orig_body, '[img');
2549                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
2550                         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
2551                 }
2552
2553                 $new_body = $new_body . $orig_body;
2554
2555                 return $new_body;
2556         }
2557
2558         private static function hasPermissions(array $obj)
2559         {
2560                 return !empty($obj['allow_cid']) || !empty($obj['allow_gid']) ||
2561                         !empty($obj['deny_cid']) || !empty($obj['deny_gid']);
2562         }
2563
2564         // @TODO $uid is unused parameter
2565         private static function samePermissions($uid, array $obj1, array $obj2): bool
2566         {
2567                 // first part is easy. Check that these are exactly the same.
2568                 if (($obj1['allow_cid'] == $obj2['allow_cid'])
2569                         && ($obj1['allow_gid'] == $obj2['allow_gid'])
2570                         && ($obj1['deny_cid'] == $obj2['deny_cid'])
2571                         && ($obj1['deny_gid'] == $obj2['deny_gid'])
2572                 ) {
2573                         return true;
2574                 }
2575
2576                 // This is harder. Parse all the permissions and compare the resulting set.
2577                 $recipients1 = self::enumeratePermissions($obj1);
2578                 $recipients2 = self::enumeratePermissions($obj2);
2579                 sort($recipients1);
2580                 sort($recipients2);
2581
2582                 /// @TODO Comparison of arrays, maybe use array_diff_assoc() here?
2583                 return ($recipients1 == $recipients2);
2584         }
2585
2586         /**
2587          * Returns an array of contact-ids that are allowed to see this object
2588          *
2589          * @param array $obj              Item array with at least uid, allow_cid, allow_gid, deny_cid and deny_gid
2590          * @param bool  $check_dead       Prunes unavailable contacts from the result
2591          * @param bool  $expand_followers Expand the list of followers
2592          * @return array
2593          * @throws \Exception
2594          */
2595         public static function enumeratePermissions(array $obj, bool $check_dead = false, bool $expand_followers = true): array
2596         {
2597                 $aclFormatter = DI::aclFormatter();
2598
2599                 if (!$expand_followers && (!empty($obj['deny_cid']) || !empty($obj['deny_gid']))) {
2600                         $expand_followers = true;
2601                 }
2602
2603                 $allow_people  = $aclFormatter->expand($obj['allow_cid']);
2604                 $allow_circles = Circle::expand($obj['uid'], $aclFormatter->expand($obj['allow_gid']), $check_dead, $expand_followers);
2605                 $deny_people   = $aclFormatter->expand($obj['deny_cid']);
2606                 $deny_circles  = Circle::expand($obj['uid'], $aclFormatter->expand($obj['deny_gid']), $check_dead);
2607                 $recipients    = array_unique(array_merge($allow_people, $allow_circles));
2608                 $deny          = array_unique(array_merge($deny_people, $deny_circles));
2609                 $recipients    = array_diff($recipients, $deny);
2610                 return $recipients;
2611         }
2612
2613         public static function expire(int $uid, int $days, string $network = "", bool $force = false)
2614         {
2615                 if (!$uid || ($days < 1)) {
2616                         return;
2617                 }
2618
2619                 $condition = [
2620                         "`uid` = ? AND NOT `deleted` AND `gravity` = ?",
2621                         $uid, self::GRAVITY_PARENT
2622                 ];
2623
2624                 /*
2625                  * $expire_network_only = save your own wall posts
2626                  * and just expire conversations started by others
2627                  */
2628                 $expire_network_only = DI::pConfig()->get($uid, 'expire', 'network_only', false);
2629
2630                 if ($expire_network_only) {
2631                         $condition[0] .= " AND NOT `wall`";
2632                 }
2633
2634                 if ($network != "") {
2635                         $condition[0] .= " AND `network` = ?";
2636                         $condition[] = $network;
2637                 }
2638
2639                 $condition[0] .= " AND `received` < ?";
2640                 $condition[] = DateTimeFormat::utc('now - ' . $days . ' day');
2641
2642                 $items = Post::select(['resource-id', 'starred', 'id', 'post-type', 'uid', 'uri-id'], $condition);
2643
2644                 if (!DBA::isResult($items)) {
2645                         return;
2646                 }
2647
2648                 $expire_items = (bool)DI::pConfig()->get($uid, 'expire', 'items', true);
2649
2650                 // Forcing expiring of items - but not notes and marked items
2651                 if ($force) {
2652                         $expire_items = true;
2653                 }
2654
2655                 $expire_notes = (bool)DI::pConfig()->get($uid, 'expire', 'notes', true);
2656                 $expire_starred = (bool)DI::pConfig()->get($uid, 'expire', 'starred', true);
2657                 $expire_photos = (bool)DI::pConfig()->get($uid, 'expire', 'photos', false);
2658
2659                 $expired = 0;
2660
2661                 $priority = DI::config()->get('system', 'expire-notify-priority');
2662
2663                 while ($item = Post::fetch($items)) {
2664                         // don't expire filed items
2665                         if (DBA::exists('post-category', ['uri-id' => $item['uri-id'], 'uid' => $item['uid'], 'type' => Post\Category::FILE])) {
2666                                 continue;
2667                         }
2668
2669                         // Only expire posts, not photos and photo comments
2670
2671                         if (!$expire_photos && !empty($item['resource-id'])) {
2672                                 continue;
2673                         } elseif (!$expire_starred && intval($item['starred'])) {
2674                                 continue;
2675                         } elseif (!$expire_notes && ($item['post-type'] == self::PT_PERSONAL_NOTE)) {
2676                                 continue;
2677                         } elseif (!$expire_items && ($item['post-type'] != self::PT_PERSONAL_NOTE)) {
2678                                 continue;
2679                         }
2680
2681                         self::markForDeletionById($item['id'], $priority);
2682
2683                         ++$expired;
2684                 }
2685                 DBA::close($items);
2686                 Logger::notice('Expired', ['user' => $uid, 'days' => $days, 'network' => $network, 'force' => $force, 'expired' => $expired, 'expire items' => $expire_items, 'expire notes' => $expire_notes, 'expire starred' => $expire_starred, 'expire photos' => $expire_photos, 'condition' => $condition]);
2687         }
2688
2689         public static function firstPostDate(int $uid, bool $wall = false)
2690         {
2691                 $user = User::getById($uid, ['register_date']);
2692                 if (empty($user)) {
2693                         return false;
2694                 }
2695
2696                 $condition = [
2697                         "`uid` = ? AND `wall` = ? AND NOT `deleted` AND `visible` AND `received` >= ?",
2698                         $uid, $wall, $user['register_date']
2699                 ];
2700                 $params = ['order' => ['received' => false]];
2701                 $thread = Post::selectFirstThread(['received'], $condition, $params);
2702                 if (DBA::isResult($thread)) {
2703                         $postdate = substr(DateTimeFormat::local($thread['received']), 0, 10);
2704                         return $postdate;
2705                 }
2706                 return false;
2707         }
2708
2709         /**
2710          * add/remove activity to an item
2711          *
2712          * Toggle activities as like,dislike,attend of an item
2713          *
2714          * @param int    $item_id
2715          * @param string $verb
2716          *            Activity verb. One of
2717          *            like, unlike, dislike, undislike, attendyes, unattendyes,
2718          *            attendno, unattendno, attendmaybe, unattendmaybe,
2719          *            announce, unannounce
2720          * @param int    $uid
2721          * @param string $allow_cid
2722          * @param string $allow_gid
2723          * @param string $deny_cid
2724          * @param string $deny_gid
2725          * @return bool
2726          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2727          * @throws \ImagickException
2728          * @hook  'post_local_end'
2729          *            array $arr
2730          *            'post_id' => ID of posted item
2731          */
2732         public static function performActivity(int $item_id, string $verb, int $uid, string $allow_cid = null, string $allow_gid = null, string $deny_cid = null, string $deny_gid = null): bool
2733         {
2734                 if (empty($uid)) {
2735                         return false;
2736                 }
2737
2738                 Logger::notice('Start create activity', ['verb' => $verb, 'item' => $item_id, 'user' => $uid]);
2739
2740                 $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $item_id]);
2741                 if (!DBA::isResult($item)) {
2742                         Logger::warning('Post had not been fetched', ['id' => $item_id]);
2743                         return false;
2744                 }
2745
2746                 $uri_id = $item['uri-id'];
2747
2748                 if (!in_array($item['uid'], [0, $uid])) {
2749                         return false;
2750                 }
2751
2752                 if (!Post::exists(['uri-id' => $item['parent-uri-id'], 'uid' => $uid])) {
2753                         $stored = self::storeForUserByUriId($item['parent-uri-id'], $uid, ['post-reason' => Item::PR_ACTIVITY]);
2754                         if (($item['parent-uri-id'] == $item['uri-id']) && !empty($stored)) {
2755                                 $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $stored]);
2756                                 if (!DBA::isResult($item)) {
2757                                         Logger::info('Could not fetch just created item - should not happen', ['stored' => $stored, 'uid' => $uid, 'uri-id' => $uri_id]);
2758                                         return false;
2759                                 }
2760                         }
2761                 }
2762
2763                 // Retrieves the local post owner
2764                 $owner = User::getOwnerDataById($uid);
2765                 if (empty($owner)) {
2766                         Logger::info('Empty owner for user', ['uid' => $uid]);
2767                         return false;
2768                 }
2769
2770                 // Retrieve the current logged in user's public contact
2771                 $author_id = Contact::getPublicIdByUserId($uid);
2772                 if (empty($author_id)) {
2773                         Logger::info('Empty public contact');
2774                         return false;
2775                 }
2776
2777                 $activity = null;
2778                 switch ($verb) {
2779                         case 'like':
2780                         case 'unlike':
2781                                 $activity = Activity::LIKE;
2782                                 break;
2783                         case 'dislike':
2784                         case 'undislike':
2785                                 $activity = Activity::DISLIKE;
2786                                 break;
2787                         case 'attendyes':
2788                         case 'unattendyes':
2789                                 $activity = Activity::ATTEND;
2790                                 break;
2791                         case 'attendno':
2792                         case 'unattendno':
2793                                 $activity = Activity::ATTENDNO;
2794                                 break;
2795                         case 'attendmaybe':
2796                         case 'unattendmaybe':
2797                                 $activity = Activity::ATTENDMAYBE;
2798                                 break;
2799                         case 'follow':
2800                         case 'unfollow':
2801                                 $activity = Activity::FOLLOW;
2802                                 break;
2803                         case 'announce':
2804                         case 'unannounce':
2805                                 $activity = Activity::ANNOUNCE;
2806                                 break;
2807                         default:
2808                                 Logger::warning('unknown verb', ['verb' => $verb, 'item' => $item_id]);
2809                                 return false;
2810                 }
2811
2812                 $mode = Strings::startsWith($verb, 'un') ? 'delete' : 'create';
2813
2814                 // Enable activity toggling instead of on/off
2815                 $event_verb_flag = $activity === Activity::ATTEND || $activity === Activity::ATTENDNO || $activity === Activity::ATTENDMAYBE;
2816
2817                 // Look for an existing verb row
2818                 // Event participation activities are mutually exclusive, only one of them can exist at all times.
2819                 if ($event_verb_flag) {
2820                         $verbs = [Activity::ATTEND, Activity::ATTENDNO, Activity::ATTENDMAYBE];
2821
2822                         // Translate to the index based activity index
2823                         $vids = [];
2824                         foreach ($verbs as $verb) {
2825                                 $vids[] = Verb::getID($verb);
2826                         }
2827                 } else {
2828                         $vids = Verb::getID($activity);
2829                 }
2830
2831                 $condition = [
2832                         'vid' => $vids, 'deleted' => false, 'gravity' => self::GRAVITY_ACTIVITY,
2833                         'author-id' => $author_id, 'uid' => $uid, 'thr-parent-id' => $uri_id
2834                 ];
2835                 $like_item = Post::selectFirst(['id', 'guid', 'verb'], $condition);
2836
2837                 if (DBA::isResult($like_item)) {
2838                         /**
2839                          * Truth table for existing activities
2840                          *
2841                          * |          Inputs            ||      Outputs      |
2842                          * |----------------------------||-------------------|
2843                          * |  Mode  | Event | Same verb || Delete? | Return? |
2844                          * |--------|-------|-----------||---------|---------|
2845                          * | create |  Yes  |    Yes    ||   No    |   Yes   |
2846                          * | create |  Yes  |    No     ||   Yes   |   No    |
2847                          * | create |  No   |    Yes    ||   No    |   Yes   |
2848                          * | create |  No   |    No     ||        N/A†       |
2849                          * | delete |  Yes  |    Yes    ||   Yes   |   N/A‡  |
2850                          * | delete |  Yes  |    No     ||   No    |   N/A‡  |
2851                          * | delete |  No   |    Yes    ||   Yes   |   N/A‡  |
2852                          * | delete |  No   |    No     ||        N/A†       |
2853                          * |--------|-------|-----------||---------|---------|
2854                          * |   A    |   B   |     C     || A xor C | !B or C |
2855                          *
2856                          * † Can't happen: It's impossible to find an existing non-event activity without
2857                          *                 the same verb because we are only looking for this single verb.
2858                          *
2859                          * ‡ The "mode = delete" is returning early whether an existing activity was found or not.
2860                          */
2861                         if ($mode == 'create' xor $like_item['verb'] == $activity) {
2862                                 self::markForDeletionById($like_item['id']);
2863                         }
2864
2865                         if (!$event_verb_flag || $like_item['verb'] == $activity) {
2866                                 return true;
2867                         }
2868                 }
2869
2870                 // No need to go further if we aren't creating anything
2871                 if ($mode == 'delete') {
2872                         return true;
2873                 }
2874
2875                 $objtype = $item['resource-id'] ? Activity\ObjectType::IMAGE : Activity\ObjectType::NOTE;
2876
2877                 $new_item = [
2878                         'guid'          => System::createUUID(),
2879                         'uri'           => self::newURI(),
2880                         'uid'           => $uid,
2881                         'contact-id'    => $owner['id'],
2882                         'wall'          => $item['wall'],
2883                         'origin'        => 1,
2884                         'network'       => Protocol::DFRN,
2885                         'protocol'      => Conversation::PARCEL_DIRECT,
2886                         'direction'     => Conversation::PUSH,
2887                         'gravity'       => self::GRAVITY_ACTIVITY,
2888                         'parent'        => $item['id'],
2889                         'thr-parent'    => $item['uri'],
2890                         'owner-id'      => $author_id,
2891                         'author-id'     => $author_id,
2892                         'body'          => $activity,
2893                         'verb'          => $activity,
2894                         'object-type'   => $objtype,
2895                         'allow_cid'     => $allow_cid ?? $item['allow_cid'],
2896                         'allow_gid'     => $allow_gid ?? $item['allow_gid'],
2897                         'deny_cid'      => $deny_cid ?? $item['deny_cid'],
2898                         'deny_gid'      => $deny_gid ?? $item['deny_gid'],
2899                         'visible'       => 1,
2900                         'unseen'        => 1,
2901                 ];
2902
2903                 if (in_array($activity, [Activity::LIKE, Activity::DISLIKE])) {
2904                         $signed = Diaspora::createLikeSignature($uid, $new_item);
2905                         if (!empty($signed)) {
2906                                 $new_item['diaspora_signed_text'] = json_encode($signed);
2907                         }
2908                 }
2909
2910                 self::insert($new_item, true);
2911
2912                 // If the parent item isn't visible then set it to visible
2913                 // @todo Check if this is still needed
2914                 if (!$item['visible']) {
2915                         self::update(['visible' => true], ['id' => $item['id']]);
2916                 }
2917                 return true;
2918         }
2919
2920         /**
2921          * Fetch the SQL condition for the given user id
2922          *
2923          * @param integer $owner_id User ID for which the permissions should be fetched
2924          * @return array condition
2925          */
2926         public static function getPermissionsConditionArrayByUserId(int $owner_id): array
2927         {
2928                 $local_user = DI::userSession()->getLocalUserId();
2929                 $remote_user = DI::userSession()->getRemoteContactID($owner_id);
2930
2931                 // default permissions - anonymous user
2932                 $condition = ["`private` != ?", self::PRIVATE];
2933
2934                 if ($local_user && ($local_user == $owner_id)) {
2935                         // Profile owner - everything is visible
2936                         $condition = [];
2937                 } elseif ($remote_user) {
2938                         // Authenticated visitor - fetch the matching permissionsets
2939                         $permissionSets = DI::permissionSet()->selectByContactId($remote_user, $owner_id);
2940                         if (!empty($set)) {
2941                                 $condition = [
2942                                         "(`private` != ? OR (`private` = ? AND `wall`
2943                                         AND `psid` IN (" . implode(', ', array_fill(0, count($set), '?')) . ")))",
2944                                         self::PRIVATE, self::PRIVATE
2945                                 ];
2946                                 $condition = array_merge($condition, $permissionSets->column('id'));
2947                         }
2948                 }
2949
2950                 return $condition;
2951         }
2952
2953         /**
2954          * Get a permission SQL string for the given user
2955          *
2956          * @param int $owner_id
2957          * @param string $table
2958          * @return string
2959          */
2960         public static function getPermissionsSQLByUserId(int $owner_id, string $table = ''): string
2961         {
2962                 $local_user = DI::userSession()->getLocalUserId();
2963                 $remote_user = DI::userSession()->getRemoteContactID($owner_id);
2964
2965                 if (!empty($table)) {
2966                         $table = DBA::quoteIdentifier($table) . '.';
2967                 }
2968
2969                 /*
2970                  * Construct permissions
2971                  *
2972                  * default permissions - anonymous user
2973                  */
2974                 $sql = sprintf(" AND " . $table . "`private` != %d", self::PRIVATE);
2975
2976                 // Profile owner - everything is visible
2977                 if ($local_user && ($local_user == $owner_id)) {
2978                         $sql = '';
2979                 } elseif ($remote_user) {
2980                         /*
2981                          * Authenticated visitor. Unless pre-verified,
2982                          * check that the contact belongs to this $owner_id
2983                          * and load the circles the visitor belongs to.
2984                          * If pre-verified, the caller is expected to have already
2985                          * done this and passed the circles into this function.
2986                          */
2987                         $permissionSets = DI::permissionSet()->selectByContactId($remote_user, $owner_id);
2988
2989                         if (!empty($set)) {
2990                                 $sql_set = sprintf(" OR (" . $table . "`private` = %d AND " . $table . "`wall` AND " . $table . "`psid` IN (", self::PRIVATE) . implode(',', $permissionSets->column('id')) . "))";
2991                         } else {
2992                                 $sql_set = '';
2993                         }
2994
2995                         $sql = sprintf(" AND (" . $table . "`private` != %d", self::PRIVATE) . $sql_set . ")";
2996                 }
2997
2998                 return $sql;
2999         }
3000
3001         /**
3002          * get translated item type
3003          *
3004          * @param array                $item
3005          * @param \Friendica\Core\L10n $l10n
3006          * @return string
3007          */
3008         public static function postType(array $item, \Friendica\Core\L10n $l10n): string
3009         {
3010                 if (!empty($item['event-id'])) {
3011                         return $l10n->t('event');
3012                 } elseif (!empty($item['resource-id'])) {
3013                         return $l10n->t('photo');
3014                 } elseif ($item['gravity'] == self::GRAVITY_ACTIVITY) {
3015                         return $l10n->t('activity');
3016                 } elseif ($item['gravity'] == self::GRAVITY_COMMENT) {
3017                         return $l10n->t('comment');
3018                 }
3019
3020                 return $l10n->t('post');
3021         }
3022
3023         /**
3024          * Sets the "rendered-html" field of the provided item
3025          *
3026          * Body is preserved to avoid side-effects as we modify it just-in-time for spoilers and private image links
3027          *
3028          * @param array $item
3029          *
3030          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3031          * @todo Remove reference, simply return "rendered-html" and "rendered-hash"
3032          */
3033         private static function putInCache(&$item)
3034         {
3035                 // Save original body to prevent addons to modify it
3036                 $body = $item['body'];
3037
3038                 $rendered_hash = $item['rendered-hash'] ?? '';
3039                 $rendered_html = $item['rendered-html'] ?? '';
3040
3041                 if (
3042                         $rendered_hash == ''
3043                         || $rendered_html == ''
3044                         || $rendered_hash != hash('md5', BBCode::VERSION . '::' . $body)
3045                         || DI::config()->get('system', 'ignore_cache')
3046                 ) {
3047                         $item['rendered-html'] = BBCode::convertForUriId($item['uri-id'], $item['body']);
3048                         $item['rendered-hash'] = hash('md5', BBCode::VERSION . '::' . $body);
3049
3050                         $hook_data = ['item' => $item, 'rendered-html' => $item['rendered-html'], 'rendered-hash' => $item['rendered-hash']];
3051                         Hook::callAll('put_item_in_cache', $hook_data);
3052                         $item['rendered-html'] = $hook_data['rendered-html'];
3053                         $item['rendered-hash'] = $hook_data['rendered-hash'];
3054                         unset($hook_data);
3055
3056                         // Update if the generated values differ from the existing ones
3057                         if ((($rendered_hash != $item['rendered-hash']) || ($rendered_html != $item['rendered-html'])) && !empty($item['id'])) {
3058                                 self::update(
3059                                         [
3060                                                 'rendered-html' => $item['rendered-html'],
3061                                                 'rendered-hash' => $item['rendered-hash']
3062                                         ],
3063                                         ['id' => $item['id']]
3064                                 );
3065                         }
3066                 }
3067
3068                 $item['body'] = $body;
3069         }
3070
3071         /**
3072          * Given an item array, convert the body element from bbcode to html and add smilie icons.
3073          * If attach is true, also add icons for item attachments.
3074          *
3075          * @param array   $item Record from item table
3076          * @param boolean $attach If true, add icons for item attachments as well
3077          * @param boolean $is_preview Whether this is a preview
3078          * @param boolean $only_cache Whether only cached HTML should be updated
3079          * @return string item body html
3080          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3081          * @throws \ImagickException
3082          * @hook  prepare_body_init item array before any work
3083          * @hook  prepare_body_content_filter ('item'=>item array, 'filter_reasons'=>string array) before first bbcode to html
3084          * @hook  prepare_body ('item'=>item array, 'html'=>body string, 'is_preview'=>boolean, 'filter_reasons'=>string array) after first bbcode to html
3085          * @hook  prepare_body_final ('item'=>item array, 'html'=>body string) after attach icons and blockquote special case handling (spoiler, author)
3086          */
3087         public static function prepareBody(array &$item, bool $attach = false, bool $is_preview = false, bool $only_cache = false): string
3088         {
3089                 $a = DI::app();
3090                 Hook::callAll('prepare_body_init', $item);
3091
3092
3093                 // In order to provide theme developers more possibilities, event items
3094                 // are treated differently.
3095                 if ($item['object-type'] === Activity\ObjectType::EVENT && isset($item['event-id'])) {
3096                         $ev = Event::getItemHTML($item);
3097                         return $ev;
3098                 }
3099
3100                 $tags = Tag::populateFromItem($item);
3101
3102                 $item['tags'] = $tags['tags'];
3103                 $item['hashtags'] = $tags['hashtags'];
3104                 $item['mentions'] = $tags['mentions'];
3105
3106                 if (!$is_preview) {
3107                         $item['body'] = preg_replace("#\s*\[attachment .*?].*?\[/attachment]\s*#ism", "\n", $item['body']);
3108                         $item['body'] = Post\Media::removeFromEndOfBody($item['body'] ?? '');
3109                         $item['body'] = Post\Media::replaceImage($item['body']);
3110                 }
3111
3112                 $body = $item['body'];
3113                 if ($is_preview) {
3114                         $item['body'] = preg_replace("#\s*\[attachment .*?].*?\[/attachment]\s*#ism", "\n", $item['body']);
3115                 }
3116
3117                 $fields = ['uri-id', 'uri', 'body', 'title', 'author-name', 'author-link', 'author-avatar', 'guid', 'created', 'plink', 'network', 'has-media', 'quote-uri-id', 'post-type'];
3118
3119                 $shared_uri_id      = 0;
3120                 $shared_links       = [];
3121                 $quote_shared_links = [];
3122
3123                 $shared = DI::contentItem()->getSharedPost($item, $fields);
3124                 if (!empty($shared['post'])) {
3125                         $shared_item  = $shared['post'];
3126                         $shared_item['body'] = Post\Media::removeFromEndOfBody($shared_item['body']);
3127                         $shared_item['body'] = Post\Media::replaceImage($shared_item['body']);
3128                         $quote_uri_id = $shared['post']['uri-id'];
3129                         $shared_links[] = strtolower($shared['post']['uri']);
3130                         $item['body'] = BBCode::removeSharedData($item['body']);
3131                 } elseif (empty($shared_item['uri-id']) && empty($item['quote-uri-id']) && ($item['network'] != Protocol::DIASPORA)) {
3132                         $media = Post\Media::getByURIId($item['uri-id'], [Post\Media::ACTIVITY]);
3133                         if (!empty($media) && ($media[0]['media-uri-id'] != $item['uri-id'])) {
3134                                 $shared_item = Post::selectFirst($fields, ['uri-id' => $media[0]['media-uri-id'], 'uid' => [$item['uid'], 0]]);
3135                                 if (empty($shared_item['uri-id'])) {
3136                                         $shared_item = Post::selectFirst($fields, ['plink' => $media[0]['url'], 'uid' => [$item['uid'], 0]]);
3137                                 } elseif (!in_array(strtolower($media[0]['url']), $shared_links)) {
3138                                         $shared_links[] = strtolower($media[0]['url']);
3139                                 }
3140
3141                                 if (empty($shared_item['uri-id'])) {
3142                                         $shared_item = Post::selectFirst($fields, ['uri' => $media[0]['url'], 'uid' => [$item['uid'], 0]]);
3143                                         $shared_links[] = strtolower($media[0]['url']);
3144                                 }
3145
3146                                 if (!empty($shared_item['uri-id'])) {
3147                                         $data = BBCode::getAttachmentData($shared_item['body']);
3148                                         if (!empty($data['url'])) {
3149                                                 $quote_shared_links[] = $data['url'];
3150                                         }
3151
3152                                         $quote_uri_id = $shared_item['uri-id'];
3153                                 }
3154                         }
3155                 }
3156
3157                 if (!empty($quote_uri_id)) {
3158                         if (isset($shared_item['plink'])) {
3159                                 $item['body'] .= "\n" . DI::contentItem()->createSharedBlockByArray($shared_item, false, true);
3160                         } else {
3161                                 DI::logger()->warning('Missing plink in shared item', ['item' => $item, 'shared' => $shared, 'quote_uri_id' => $quote_uri_id, 'shared_item' => $shared_item]);
3162                         }
3163                 }
3164
3165                 if (!empty($shared_item['uri-id'])) {
3166                         $shared_uri_id = $shared_item['uri-id'];
3167                         $shared_links[] = strtolower($shared_item['plink']);
3168                         $shared_attachments = Post\Media::splitAttachments($shared_uri_id, [], $shared_item['has-media']);
3169                         $shared_links = array_merge($shared_links, array_column($shared_attachments['visual'], 'url'));
3170                         $shared_links = array_merge($shared_links, array_column($shared_attachments['link'], 'url'));
3171                         $shared_links = array_merge($shared_links, array_column($shared_attachments['additional'], 'url'));
3172                         $item['body'] = self::replaceVisualAttachments($shared_attachments, $item['body']);
3173                 }
3174
3175                 $attachments = Post\Media::splitAttachments($item['uri-id'], $shared_links, $item['has-media'] ?? false);
3176                 $item['body'] = self::replaceVisualAttachments($attachments, $item['body'] ?? '');
3177
3178                 self::putInCache($item);
3179                 $item['body'] = $body;
3180                 $s = $item["rendered-html"];
3181
3182                 if ($only_cache) {
3183                         return '';
3184                 }
3185
3186                 // Compile eventual content filter reasons
3187                 $filter_reasons = [];
3188                 if (!$is_preview && DI::userSession()->getPublicContactId() != $item['author-id']) {
3189                         if (!empty($item['user-blocked-author']) || !empty($item['user-blocked-owner'])) {
3190                                 $filter_reasons[] = DI::l10n()->t('%s is blocked', $item['author-name']);
3191                         } elseif (!empty($item['user-ignored-author']) || !empty($item['user-ignored-owner'])) {
3192                                 $filter_reasons[] = DI::l10n()->t('%s is ignored', $item['author-name']);
3193                         } elseif (!empty($item['user-collapsed-author']) || !empty($item['user-collapsed-owner'])) {
3194                                 $filter_reasons[] = DI::l10n()->t('Content from %s is collapsed', $item['author-name']);
3195                         }
3196
3197                         if (!empty($item['content-warning']) && (!DI::userSession()->getLocalUserId() || !DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'system', 'disable_cw', false))) {
3198                                 $filter_reasons[] = DI::l10n()->t('Content warning: %s', $item['content-warning']);
3199                         }
3200
3201                         $item['attachments'] = $attachments;
3202
3203                         $hook_data = [
3204                                 'item' => $item,
3205                                 'filter_reasons' => $filter_reasons
3206                         ];
3207                         Hook::callAll('prepare_body_content_filter', $hook_data);
3208                         $filter_reasons = $hook_data['filter_reasons'];
3209                         unset($hook_data);
3210                 }
3211
3212                 $hook_data = [
3213                         'item' => $item,
3214                         'html' => $s,
3215                         'preview' => $is_preview,
3216                         'filter_reasons' => $filter_reasons
3217                 ];
3218                 Hook::callAll('prepare_body', $hook_data);
3219                 $s = $hook_data['html'];
3220
3221                 unset($hook_data);
3222
3223                 if (!$attach) {
3224                         // Replace the blockquotes with quotes that are used in mails.
3225                         $mailquote = '<blockquote type="cite" class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">';
3226                         $s = str_replace(['<blockquote>', '<blockquote class="spoiler">', '<blockquote class="author">'], [$mailquote, $mailquote, $mailquote], $s);
3227                         return $s;
3228                 }
3229
3230                 if (!empty($shared_attachments)) {
3231                         $s = self::addGallery($s, $shared_attachments, $item['uri-id']);
3232                         $s = self::addVisualAttachments($shared_attachments, $shared_item, $s, true);
3233                         $s = self::addLinkAttachment($shared_uri_id ?: $item['uri-id'], $shared_attachments, $body, $s, true, $quote_shared_links);
3234                         $s = self::addNonVisualAttachments($shared_attachments, $item, $s, true);
3235                         $body = BBCode::removeSharedData($body);
3236                 }
3237
3238                 $pos = strpos($s, BBCode::SHARED_ANCHOR);
3239                 if ($pos) {
3240                         $shared_html = substr($s, $pos + strlen(BBCode::SHARED_ANCHOR));
3241                         $s = substr($s, 0, $pos);
3242                 }
3243
3244                 $s = self::addGallery($s, $attachments, $item['uri-id']);
3245                 $s = self::addVisualAttachments($attachments, $item, $s, false);
3246                 $s = self::addLinkAttachment($item['uri-id'], $attachments, $body, $s, false, $shared_links);
3247                 $s = self::addNonVisualAttachments($attachments, $item, $s, false);
3248                 $s = self::addQuestions($item, $s);
3249
3250                 // Map.
3251                 if (strpos($s, '<div class="map">') !== false && !empty($item['coord'])) {
3252                         $x = Map::byCoordinates(trim($item['coord']));
3253                         if ($x) {
3254                                 $s = preg_replace('/\<div class\=\"map\"\>/', '$0' . $x, $s);
3255                         }
3256                 }
3257
3258                 // Replace friendica image url size with theme preference.
3259                 if (!empty($a->getThemeInfoValue('item_image_size'))) {
3260                         $ps = $a->getThemeInfoValue('item_image_size');
3261                         $s = preg_replace('|(<img[^>]+src="[^"]+/photo/[0-9a-f]+)-[0-9]|', "$1-" . $ps, $s);
3262                 }
3263
3264                 if (!empty($shared_html)) {
3265                         $s .= $shared_html;
3266                 }
3267
3268                 $s = HTML::applyContentFilter($s, $filter_reasons);
3269
3270                 $hook_data = ['item' => $item, 'html' => $s];
3271                 Hook::callAll('prepare_body_final', $hook_data);
3272                 return $hook_data['html'];
3273         }
3274
3275         /**
3276          * @param array $images
3277          * @return string
3278          * @throws \Friendica\Network\HTTPException\ServiceUnavailableException
3279          */
3280         private static function makeImageGrid(array $images): string
3281         {
3282                 // Image for first column (fc) and second column (sc)
3283                 $images_fc = [];
3284                 $images_sc = [];
3285
3286                 for ($i = 0; $i < count($images); $i++) {
3287                         ($i % 2 == 0) ? ($images_fc[] = $images[$i]) : ($images_sc[] = $images[$i]);
3288                 }
3289
3290                 return Renderer::replaceMacros(Renderer::getMarkupTemplate('content/image_grid.tpl'), [
3291                         'columns' => [
3292                                 'fc' => $images_fc,
3293                                 'sc' => $images_sc,
3294                         ],
3295                 ]);
3296         }
3297
3298         /**
3299          * Modify links to pictures to links for the "Fancybox" gallery
3300          *
3301          * @param string $s
3302          * @param array $attachments
3303          * @param integer $uri_id
3304          * @return string
3305          */
3306         private static function addGallery(string $s, array $attachments, int $uri_id): string
3307         {
3308                 foreach ($attachments['visual'] as $attachment) {
3309                         if (empty($attachment['preview']) || ($attachment['type'] != Post\Media::IMAGE)) {
3310                                 continue;
3311                         }
3312                         $s = str_replace('<a href="' . $attachment['url'] . '"', '<a data-fancybox="' . $uri_id . '" href="' . $attachment['url'] . '"', $s);
3313                 }
3314                 return $s;
3315         }
3316
3317         /**
3318          * Check if the body contains a link
3319          *
3320          * @param string $body
3321          * @param string $url
3322          * @param int    $type
3323          * @return bool
3324          */
3325         public static function containsLink(string $body, string $url, int $type = 0): bool
3326         {
3327                 // Make sure that for example site parameters aren't used when testing if the link is contained in the body
3328                 $urlparts = parse_url($url);
3329                 if (empty($urlparts)) {
3330                         return false;
3331                 }
3332
3333                 unset($urlparts['query']);
3334                 unset($urlparts['fragment']);
3335
3336                 try {
3337                         $url = (string)Uri::fromParts($urlparts);
3338                 } catch (\InvalidArgumentException $e) {
3339                         DI::logger()->notice('Invalid URL', ['$url' => $url, '$urlparts' => $urlparts]);
3340                         /* See https://github.com/friendica/friendica/issues/12113
3341                          * Malformed URLs will result in a Fatal Error
3342                          */
3343                         return false;
3344                 }
3345
3346                 // Remove media links to only search in embedded content
3347                 // @todo Check images for image link, audio for audio links, ...
3348                 if (in_array($type, [Post\Media::AUDIO, Post\Media::VIDEO, Post\Media::IMAGE])) {
3349                         $body = preg_replace("/\[url=[^\[\]]*\](.*)\[\/url\]/Usi", ' $1 ', $body);
3350                 }
3351
3352                 if (strpos($body, $url)) {
3353                         return true;
3354                 }
3355
3356                 foreach ([0, 1, 2] as $size) {
3357                         if (
3358                                 preg_match('#/photo/.*-' . $size . '\.#ism', $url) &&
3359                                 strpos(preg_replace('#(/photo/.*)-[012]\.#ism', '$1-' . $size . '.', $body), $url)
3360                         ) {
3361                                 return true;
3362                         }
3363                 }
3364
3365                 return false;
3366         }
3367
3368         /**
3369          * Replace visual attachments in the body
3370          *
3371          * @param array $attachments
3372          * @param string $body
3373          * @return string modified body
3374          */
3375         private static function replaceVisualAttachments(array $attachments, string $body): string
3376         {
3377                 DI::profiler()->startRecording('rendering');
3378
3379                 foreach ($attachments['visual'] as $attachment) {
3380                         if (!empty($attachment['preview'])) {
3381                                 if (Network::isLocalLink($attachment['preview'])) {
3382                                         continue;
3383                                 }
3384                                 $proxy   = Post\Media::getPreviewUrlForId($attachment['id'], Proxy::SIZE_LARGE);
3385                                 $search  = ['[img=' . $attachment['preview'] . ']', ']' . $attachment['preview'] . '[/img]'];
3386                                 $replace = ['[img=' . $proxy . ']', ']' . $proxy . '[/img]'];
3387
3388                                 $body = str_replace($search, $replace, $body);
3389                         } elseif ($attachment['filetype'] == 'image') {
3390                                 if (Network::isLocalLink($attachment['url'])) {
3391                                         continue;
3392                                 }
3393                                 $proxy   = Post\Media::getUrlForId($attachment['id']);
3394                                 $search  = ['[img=' . $attachment['url'] . ']', ']' . $attachment['url'] . '[/img]'];
3395                                 $replace = ['[img=' . $proxy . ']', ']' . $proxy . '[/img]'];
3396
3397                                 $body = str_replace($search, $replace, $body);
3398                         }
3399                 }
3400                 DI::profiler()->stopRecording();
3401                 return $body;
3402         }
3403
3404         /**
3405          * Add visual attachments to the content
3406          *
3407          * @param array $attachments
3408          * @param array $item
3409          * @param string $content
3410          * @return string modified content
3411          */
3412         private static function addVisualAttachments(array $attachments, array $item, string $content, bool $shared): string
3413         {
3414                 DI::profiler()->startRecording('rendering');
3415                 $leading  = '';
3416                 $trailing = '';
3417                 $images   = [];
3418
3419                 // @todo In the future we should make a single for the template engine with all media in it. This allows more flexibilty.
3420                 foreach ($attachments['visual'] as $attachment) {
3421                         if (self::containsLink($item['body'], $attachment['preview'] ?? $attachment['url'], $attachment['type'])) {
3422                                 continue;
3423                         }
3424
3425                         if ($attachment['filetype'] == 'image') {
3426                                 $preview_url = Post\Media::getPreviewUrlForId($attachment['id'], ($attachment['width'] > $attachment['height']) ? Proxy::SIZE_MEDIUM : Proxy::SIZE_LARGE);
3427                         } elseif (!empty($attachment['preview'])) {
3428                                 $preview_url = Post\Media::getPreviewUrlForId($attachment['id'], Proxy::SIZE_LARGE);
3429                         } else {
3430                                 $preview_url = '';
3431                         }
3432
3433                         if ($preview_url && self::containsLink($item['body'], $preview_url)) {
3434                                 continue;
3435                         }
3436
3437                         if (($attachment['filetype'] == 'video')) {
3438                                 /// @todo Move the template to /content as well
3439                                 $media = Renderer::replaceMacros(Renderer::getMarkupTemplate('video_top.tpl'), [
3440                                         '$video' => [
3441                                                 'id'      => $attachment['id'],
3442                                                 'src'     => $attachment['url'],
3443                                                 'name'    => $attachment['name'] ?: $attachment['url'],
3444                                                 'preview' => $preview_url,
3445                                                 'mime'    => $attachment['mimetype'],
3446                                         ],
3447                                 ]);
3448                                 if (($item['post-type'] ?? null) == Item::PT_VIDEO) {
3449                                         $leading .= $media;
3450                                 } else {
3451                                         $trailing .= $media;
3452                                 }
3453                         } elseif ($attachment['filetype'] == 'audio') {
3454                                 $media = Renderer::replaceMacros(Renderer::getMarkupTemplate('content/audio.tpl'), [
3455                                         '$audio' => [
3456                                                 'id'     => $attachment['id'],
3457                                                 'src'    => $attachment['url'],
3458                                                 'name'   => $attachment['name'] ?: $attachment['url'],
3459                                                 'mime'   => $attachment['mimetype'],
3460                                         ],
3461                                 ]);
3462                                 if (($item['post-type'] ?? null) == Item::PT_AUDIO) {
3463                                         $leading .= $media;
3464                                 } else {
3465                                         $trailing .= $media;
3466                                 }
3467                         } elseif ($attachment['filetype'] == 'image') {
3468                                 $src_url = Post\Media::getUrlForId($attachment['id']);
3469                                 if (self::containsLink($item['body'], $src_url)) {
3470                                         continue;
3471                                 }
3472                                 $images[] = ['src' => $src_url, 'preview' => $preview_url, 'attachment' => $attachment, 'uri_id' => $item['uri-id']];
3473                         }
3474                 }
3475
3476                 $media = '';
3477                 if (count($images) > 1) {
3478                         $media = self::makeImageGrid($images);
3479                 } elseif (count($images) == 1) {
3480                         $media = Renderer::replaceMacros(Renderer::getMarkupTemplate('content/image.tpl'), [
3481                                 '$image' => $images[0],
3482                         ]);
3483                 }
3484
3485                 // On Diaspora posts the attached pictures are leading
3486                 if ($item['network'] == Protocol::DIASPORA) {
3487                         $leading .= $media;
3488                 } else {
3489                         $trailing .= $media;
3490                 }
3491
3492                 if ($shared) {
3493                         $content = str_replace(BBCode::TOP_ANCHOR, '<div class="body-attach">' . $leading . '</div>' . BBCode::TOP_ANCHOR, $content);
3494                         $content = str_replace(BBCode::BOTTOM_ANCHOR, '<div class="body-attach">' . $trailing . '</div>' . BBCode::BOTTOM_ANCHOR, $content);
3495                 } else {
3496                         if ($leading != '') {
3497                                 $content = '<div class="body-attach">' . $leading . '</div>' . $content;
3498                         }
3499
3500                         if ($trailing != '') {
3501                                 $content .= '<div class="body-attach">' . $trailing . '</div>';
3502                         }
3503                 }
3504
3505                 DI::profiler()->stopRecording();
3506                 return $content;
3507         }
3508
3509         /**
3510          * Add link attachment to the content
3511          *
3512          * @param array  $attachments
3513          * @param string $body
3514          * @param string $content
3515          * @param bool   $shared
3516          * @param array  $ignore_links A list of URLs to ignore
3517          * @return string modified content
3518          */
3519         private static function addLinkAttachment(int $uriid, array $attachments, string $body, string $content, bool $shared, array $ignore_links): string
3520         {
3521                 DI::profiler()->startRecording('rendering');
3522                 // Don't show a preview when there is a visual attachment (audio or video)
3523                 $types = array_column($attachments['visual'], 'type');
3524                 $preview = !in_array(Post\Media::IMAGE, $types) && !in_array(Post\Media::VIDEO, $types);
3525
3526                 if (!empty($attachments['link'])) {
3527                         foreach ($attachments['link'] as $link) {
3528                                 $found = false;
3529                                 foreach ($ignore_links as $ignore_link) {
3530                                         if (Strings::compareLink($link['url'], $ignore_link)) {
3531                                                 $found = true;
3532                                         }
3533                                 }
3534                                 // @todo Judge between the links to use the one with most information
3535                                 if (!$found && (empty($attachment) || !empty($link['author-name']) ||
3536                                         (empty($attachment['name']) && !empty($link['name'])) ||
3537                                         (empty($attachment['description']) && !empty($link['description'])) ||
3538                                         (empty($attachment['preview']) && !empty($link['preview'])))) {
3539                                         $attachment = $link;
3540                                 }
3541                         }
3542                 }
3543
3544                 if (!empty($attachment)) {
3545                         $data = [
3546                                 'after' => '',
3547                                 'author_name' => $attachment['author-name'] ?? '',
3548                                 'author_url' =>  $attachment['author-url'] ?? '',
3549                                 'description' => $attachment['description'] ?? '',
3550                                 'image' => '',
3551                                 'preview' => '',
3552                                 'provider_name' => $attachment['publisher-name'] ?? '',
3553                                 'provider_url' => $attachment['publisher-url'] ?? '',
3554                                 'text' => '',
3555                                 'title' => $attachment['name'] ?? '',
3556                                 'type' => 'link',
3557                                 'url' => $attachment['url']
3558                         ];
3559
3560                         if ($preview && !empty($attachment['preview'])) {
3561                                 if ($attachment['preview-width'] >= 500) {
3562                                         $data['image'] = Post\Media::getPreviewUrlForId($attachment['id'], Proxy::SIZE_MEDIUM);
3563                                 } else {
3564                                         $data['preview'] = Post\Media::getPreviewUrlForId($attachment['id'], Proxy::SIZE_MEDIUM);
3565                                 }
3566                         }
3567
3568                         if (!empty($data['description']) && !empty($content)) {
3569                                 similar_text($data['description'], $content, $percent);
3570                         } else {
3571                                 $percent = 0;
3572                         }
3573
3574                         if (!empty($data['description']) && (($data['title'] == $data['description']) || ($percent > 95) || (strpos($content, $data['description']) !== false))) {
3575                                 $data['description'] = '';
3576                         }
3577
3578                         if (($data['author_name'] ?? '') == ($data['provider_name'] ?? '')) {
3579                                 $data['author_name'] = '';
3580                         }
3581
3582                         if (($data['author_url'] ?? '') == ($data['provider_url'] ?? '')) {
3583                                 $data['author_url'] = '';
3584                         }
3585                 } elseif (preg_match("/.*(\[attachment.*?\].*?\[\/attachment\]).*/ism", $body, $match)) {
3586                         $data = BBCode::getAttachmentData($match[1]);
3587                 }
3588                 DI::profiler()->stopRecording();
3589
3590                 if (isset($data['url']) && !in_array(strtolower($data['url']), $ignore_links)) {
3591                         if (!empty($data['description']) || !empty($data['image']) || !empty($data['preview']) || (!empty($data['title']) && !Strings::compareLink($data['title'], $data['url']))) {
3592                                 $parts = parse_url($data['url']);
3593                                 if (!empty($parts['scheme']) && !empty($parts['host'])) {
3594                                         if (empty($data['provider_name'])) {
3595                                                 $data['provider_name'] = $parts['host'];
3596                                         }
3597                                         if (empty($data['provider_url']) || empty(parse_url($data['provider_url'], PHP_URL_SCHEME))) {
3598                                                 $data['provider_url'] = $parts['scheme'] . '://' . $parts['host'];
3599
3600                                                 if (!empty($parts['port'])) {
3601                                                         $data['provider_url'] .= ':' . $parts['port'];
3602                                                 }
3603                                         }
3604                                 }
3605
3606                                 // @todo Use a template
3607                                 $preview_mode = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'system', 'preview_mode', BBCode::PREVIEW_LARGE);
3608                                 if ($preview_mode != BBCode::PREVIEW_NONE) {
3609                                         $rendered = BBCode::convertAttachment('', BBCode::INTERNAL, false, $data, $uriid, $preview_mode);
3610                                 } else {
3611                                         $rendered = '';
3612                                 }
3613                         } elseif (!self::containsLink($content, $data['url'], Post\Media::HTML)) {
3614                                 $rendered = Renderer::replaceMacros(Renderer::getMarkupTemplate('content/link.tpl'), [
3615                                         '$url'   => $data['url'],
3616                                         '$title' => $data['title'],
3617                                 ]);
3618                         } else {
3619                                 return $content;
3620                         }
3621
3622                         if ($shared) {
3623                                 return str_replace(BBCode::BOTTOM_ANCHOR, BBCode::BOTTOM_ANCHOR . $rendered, $content);
3624                         } else {
3625                                 return $content . $rendered;
3626                         }
3627                 }
3628                 return $content;
3629         }
3630
3631         /**
3632          * Add non visual attachments to the content
3633          *
3634          * @param array $attachments
3635          * @param array $item
3636          * @param string $content
3637          * @return string modified content
3638          */
3639         private static function addNonVisualAttachments(array $attachments, array $item, string $content): string
3640         {
3641                 DI::profiler()->startRecording('rendering');
3642                 $trailing = '';
3643                 foreach ($attachments['additional'] as $attachment) {
3644                         if (strpos($item['body'], $attachment['url'])) {
3645                                 continue;
3646                         }
3647
3648                         $author = [
3649                                 'uid'     => 0,
3650                                 'id'      => $item['author-id'],
3651                                 'network' => $item['author-network'],
3652                                 'url'     => $item['author-link'],
3653                                 'alias'   => $item['author-alias']
3654                         ];
3655                         $the_url = Contact::magicLinkByContact($author, $attachment['url']);
3656
3657                         $title = Strings::escapeHtml(trim(($attachment['description'] ?? '') ?: $attachment['url']));
3658
3659                         if (!empty($attachment['size'])) {
3660                                 $title .= ' ' . $attachment['size'] . ' ' . DI::l10n()->t('bytes');
3661                         }
3662
3663                         /// @todo Use a template
3664                         $icon = '<div class="attachtype icon s22 type-' . $attachment['filetype'] . ' subtype-' . $attachment['subtype'] . '"></div>';
3665                         $trailing .= '<a href="' . strip_tags($the_url) . '" title="' . $title . '" class="attachlink" target="_blank" rel="noopener noreferrer" >' . $icon . '</a>';
3666                 }
3667
3668                 if ($trailing != '') {
3669                         $content .= '<div class="body-attach">' . $trailing . '</div>';
3670                 }
3671
3672                 DI::profiler()->stopRecording();
3673                 return $content;
3674         }
3675
3676         private static function addQuestions(array $item, string $content): string
3677         {
3678                 DI::profiler()->startRecording('rendering');
3679                 if (!empty($item['question-id'])) {
3680                         $question = [
3681                                 'id'       => $item['question-id'],
3682                                 'multiple' => $item['question-multiple'],
3683                                 'voters'   => $item['question-voters'],
3684                                 'endtime'  => $item['question-end-time']
3685                         ];
3686
3687                         $options = Post\QuestionOption::getByURIId($item['uri-id']);
3688                         foreach ($options as $key => $option) {
3689                                 if ($question['voters'] > 0) {
3690                                         $percent = $option['replies'] / $question['voters'] * 100;
3691                                         $options[$key]['vote'] = DI::l10n()->tt('%2$s (%3$d%%, %1$d vote)', '%2$s (%3$d%%, %1$d votes)', $option['replies'], $option['name'], round($percent, 1));
3692                                 } else {
3693                                         $options[$key]['vote'] = DI::l10n()->tt('%2$s (%1$d vote)', '%2$s (%1$d votes)', $option['replies'], $option['name']);
3694                                 }
3695                         }
3696
3697                         if (!empty($question['voters']) && !empty($question['endtime'])) {
3698                                 $summary = DI::l10n()->tt('%d voter. Poll end: %s', '%d voters. Poll end: %s', $question['voters'], Temporal::getRelativeDate($question['endtime']));
3699                         } elseif (!empty($question['voters'])) {
3700                                 $summary = DI::l10n()->tt('%d voter.', '%d voters.', $question['voters']);
3701                         } elseif (!empty($question['endtime'])) {
3702                                 $summary = DI::l10n()->t('Poll end: %s', Temporal::getRelativeDate($question['endtime']));
3703                         } else {
3704                                 $summary = '';
3705                         }
3706
3707                         $content .= Renderer::replaceMacros(Renderer::getMarkupTemplate('content/question.tpl'), [
3708                                 '$question' => $question,
3709                                 '$options'  => $options,
3710                                 '$summary'  => $summary,
3711                         ]);
3712                 }
3713                 DI::profiler()->stopRecording();
3714                 return $content;
3715         }
3716
3717         /**
3718          * get private link for item
3719          *
3720          * @param array $item
3721          * @return boolean|array False if item has not plink, otherwise array('href'=>plink url, 'title'=>translated title)
3722          * @throws \Exception
3723          */
3724         public static function getPlink(array $item)
3725         {
3726                 if (!empty($item['plink']) && Network::isValidHttpUrl($item['plink'])) {
3727                         $plink = $item['plink'];
3728                 } elseif (!empty($item['uri']) && Network::isValidHttpUrl($item['uri']) && !Network::isLocalLink($item['uri'])) {
3729                         $plink = $item['uri'];
3730                 }
3731
3732                 if (DI::userSession()->getLocalUserId()) {
3733                         $ret = [
3734                                 'href' => "display/" . $item['guid'],
3735                                 'orig' => "display/" . $item['guid'],
3736                                 'title' => DI::l10n()->t('View on separate page'),
3737                                 'orig_title' => DI::l10n()->t('View on separate page'),
3738                         ];
3739
3740                         if (!empty($plink) && ($item['private'] == self::PRIVATE)) {
3741                                 $author = [
3742                                         'uid'     => 0,
3743                                         'id'      => $item['author-id'],
3744                                         'network' => $item['author-network'],
3745                                         'url'     => $item['author-link'],
3746                                         'alias'   => $item['author-alias'],
3747                                 ];
3748                                 $plink = Contact::magicLinkByContact($author, $plink);
3749                         }
3750
3751                         if (!empty($plink)) {
3752                                 $ret['href'] = DI::baseUrl()->remove($plink);
3753                                 $ret['title'] = DI::l10n()->t('Link to source');
3754                         }
3755                 } elseif (!empty($plink) && ($item['private'] != self::PRIVATE)) {
3756                         $ret = [
3757                                 'href' => $plink,
3758                                 'orig' => $plink,
3759                                 'title' => DI::l10n()->t('Link to source'),
3760                                 'orig_title' => DI::l10n()->t('Link to source'),
3761                         ];
3762                 } else {
3763                         $ret = [];
3764                 }
3765
3766                 return $ret;
3767         }
3768
3769         /**
3770          * Does the given uri-id belongs to a post that is sent as starting post to a group?
3771          * This does apply to posts that are sent via ! and not in parallel to a group via @
3772          *
3773          * @param int $uri_id
3774          *
3775          * @return boolean "true" when it is a group post
3776          */
3777         public static function isGroupPost(int $uri_id): bool
3778         {
3779                 if (Post::exists(['private' => Item::PUBLIC, 'uri-id' => $uri_id])) {
3780                         return false;
3781                 }
3782
3783                 foreach (Tag::getByURIId($uri_id, [Tag::EXCLUSIVE_MENTION, Tag::AUDIENCE]) as $tag) {
3784                         // @todo Possibly check for a public audience in the future, see https://socialhub.activitypub.rocks/t/fep-1b12-group-federation/2724
3785                         // and https://codeberg.org/fediverse/fep/src/branch/main/feps/fep-1b12.md
3786                         if (DBA::exists('contact', ['uid' => 0, 'nurl' => Strings::normaliseLink($tag['url']), 'contact-type' => Contact::TYPE_COMMUNITY])) {
3787                                 return true;
3788                         }
3789                 }
3790                 return false;
3791         }
3792
3793         /**
3794          * Search item id for given URI or plink
3795          *
3796          * @param string $uri
3797          * @param integer $uid
3798          *
3799          * @return integer item id
3800          */
3801         public static function searchByLink(string $uri, int $uid = 0): int
3802         {
3803                 $ssl_uri = str_replace('http://', 'https://', $uri);
3804                 $uris = [$uri, $ssl_uri, Strings::normaliseLink($uri)];
3805
3806                 $item = Post::selectFirst(['id'], ['uri' => $uris, 'uid' => $uid]);
3807                 if (DBA::isResult($item)) {
3808                         return $item['id'];
3809                 }
3810
3811                 $item = Post::selectFirst(['id'], ['plink' => $uris, 'uid' => $uid]);
3812                 if (DBA::isResult($item)) {
3813                         return $item['id'];
3814                 }
3815
3816                 return 0;
3817         }
3818
3819         /**
3820          * Return the URI for a link to the post
3821          *
3822          * @param string $uri URI or link to post
3823          *
3824          * @return string URI
3825          */
3826         public static function getURIByLink(string $uri): string
3827         {
3828                 $ssl_uri = str_replace('http://', 'https://', $uri);
3829                 $uris = [$uri, $ssl_uri, Strings::normaliseLink($uri)];
3830
3831                 $item = Post::selectFirst(['uri'], ['uri' => $uris]);
3832                 if (DBA::isResult($item)) {
3833                         return $item['uri'];
3834                 }
3835
3836                 $item = Post::selectFirst(['uri'], ['plink' => $uris]);
3837                 if (DBA::isResult($item)) {
3838                         return $item['uri'];
3839                 }
3840
3841                 return '';
3842         }
3843
3844         /**
3845          * Fetches item for given URI or plink
3846          *
3847          * @param string $uri
3848          * @param integer $uid
3849          *
3850          * @return integer item id
3851          */
3852         public static function fetchByLink(string $uri, int $uid = 0): int
3853         {
3854                 Logger::info('Trying to fetch link', ['uid' => $uid, 'uri' => $uri]);
3855                 $item_id = self::searchByLink($uri, $uid);
3856                 if (!empty($item_id)) {
3857                         Logger::info('Link found', ['uid' => $uid, 'uri' => $uri, 'id' => $item_id]);
3858                         return $item_id;
3859                 }
3860
3861                 $hookData = [
3862                         'uri'     => $uri,
3863                         'uid'     => $uid,
3864                         'item_id' => null,
3865                 ];
3866
3867                 Hook::callAll('item_by_link', $hookData);
3868
3869                 if (isset($hookData['item_id'])) {
3870                         return is_numeric($hookData['item_id']) ? $hookData['item_id'] : 0;
3871                 }
3872
3873                 $fetched_uri = ActivityPub\Processor::fetchMissingActivity($uri, [], '', ActivityPub\Receiver::COMPLETION_MANUAL, $uid);
3874
3875                 if ($fetched_uri) {
3876                         $item_id = self::searchByLink($fetched_uri, $uid);
3877                 } else {
3878                         $item_id = Diaspora::fetchByURL($uri);
3879                 }
3880
3881                 if (!empty($item_id)) {
3882                         Logger::info('Link fetched', ['uid' => $uid, 'uri' => $uri, 'id' => $item_id]);
3883                         return $item_id;
3884                 }
3885
3886                 Logger::info('Link not found', ['uid' => $uid, 'uri' => $uri]);
3887                 return 0;
3888         }
3889
3890         /**
3891          * Fetch the uri-id of a quote
3892          *
3893          * @param string $body
3894          * @return integer
3895          */
3896         public static function getQuoteUriId(string $body, int $uid = 0): int
3897         {
3898                 $shared = BBCode::fetchShareAttributes($body);
3899                 if (empty($shared['guid']) && empty($shared['message_id'])) {
3900                         return 0;
3901                 }
3902
3903                 if (empty($shared['link']) && empty($shared['message_id'])) {
3904                         Logger::notice('Invalid share block.', ['share' => $shared]);
3905                         return 0;
3906                 }
3907
3908                 if (!empty($shared['guid'])) {
3909                         $shared_item = Post::selectFirst(['uri-id'], ['guid' => $shared['guid'], 'uid' => [0, $uid]]);
3910                         if (!empty($shared_item['uri-id'])) {
3911                                 Logger::debug('Found post by guid', ['guid' => $shared['guid'], 'uid' => $uid]);
3912                                 return $shared_item['uri-id'];
3913                         }
3914                 }
3915
3916                 if (!empty($shared['message_id'])) {
3917                         $shared_item = Post::selectFirst(['uri-id'], ['uri' => $shared['message_id'], 'uid' => [0, $uid]]);
3918                         if (!empty($shared_item['uri-id'])) {
3919                                 Logger::debug('Found post by message_id', ['message_id' => $shared['message_id'], 'uid' => $uid]);
3920                                 return $shared_item['uri-id'];
3921                         }
3922                 }
3923
3924                 if (!empty($shared['link'])) {
3925                         $shared_item = Post::selectFirst(['uri-id'], ['plink' => $shared['link'], 'uid' => [0, $uid]]);
3926                         if (!empty($shared_item['uri-id'])) {
3927                                 Logger::debug('Found post by link', ['link' => $shared['link'], 'uid' => $uid]);
3928                                 return $shared_item['uri-id'];
3929                         }
3930                 }
3931
3932                 $url = $shared['message_id'] ?: $shared['link'];
3933                 $id = self::fetchByLink($url);
3934                 if (!$id) {
3935                         Logger::notice('Post could not be fetched.', ['url' => $url, 'uid' => $uid]);
3936                         return 0;
3937                 }
3938
3939                 $shared_item = Post::selectFirst(['uri-id'], ['id' => $id]);
3940                 if (!empty($shared_item['uri-id'])) {
3941                         Logger::debug('Fetched shared post', ['id' => $id, 'url' => $url, 'uid' => $uid]);
3942                         return $shared_item['uri-id'];
3943                 }
3944
3945                 Logger::warning('Post does not exist although it was supposed to had been fetched.', ['id' => $id, 'url' => $url, 'uid' => $uid]);
3946                 return 0;
3947         }
3948 }