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\Image;
  26 use Friendica\Content\Post\Collection\PostMedias;
  27 use Friendica\Content\Post\Entity\PostMedia;
  28 use Friendica\Content\Text\BBCode;
  29 use Friendica\Content\Text\HTML;
  30 use Friendica\Core\Hook;
  31 use Friendica\Core\Logger;
  32 use Friendica\Core\Protocol;
  33 use Friendica\Core\Renderer;
  34 use Friendica\Core\System;
  35 use Friendica\Core\Worker;
  36 use Friendica\Database\DBA;
  37 use Friendica\DI;
  38 use Friendica\Model\Post\Category;
  39 use Friendica\Network\HTTPException\InternalServerErrorException;
  40 use Friendica\Network\HTTPException\ServiceUnavailableException;
  41 use Friendica\Protocol\Activity;
  42 use Friendica\Protocol\ActivityPub;
  43 use Friendica\Protocol\Delivery;
  44 use Friendica\Protocol\Diaspora;
  45 use Friendica\Util\DateTimeFormat;
  46 use Friendica\Util\Map;
  47 use Friendica\Util\Network;
  48 use Friendica\Util\Proxy;
  49 use Friendica\Util\Strings;
  50 use Friendica\Util\Temporal;
  51 use GuzzleHttp\Psr7\Uri;
  52 use LanguageDetection\Language;
  53
  54 class Item
  55 {
  56         // Posting types, inspired by https://www.w3.org/TR/activitystreams-vocabulary/#object-types
  57         const PT_ARTICLE = 0;
  58         const PT_NOTE = 1;
  59         const PT_PAGE = 2;
  60         const PT_IMAGE = 16;
  61         const PT_AUDIO = 17;
  62         const PT_VIDEO = 18;
  63         const PT_DOCUMENT = 19;
  64         const PT_EVENT = 32;
  65         const PT_POLL = 33;
  66         const PT_PERSONAL_NOTE = 128;
  67
  68         // Posting reasons (Why had a post been stored for a user?)
  69         const PR_NONE = 0;
  70         const PR_TAG = 64;
  71         const PR_TO = 65;
  72         const PR_CC = 66;
  73         const PR_BTO = 67;
  74         const PR_BCC = 68;
  75         const PR_FOLLOWER = 69;
  76         const PR_ANNOUNCEMENT = 70;
  77         const PR_COMMENT = 71;
  78         const PR_STORED = 72;
  79         const PR_GLOBAL = 73;
  80         const PR_RELAY = 74;
  81         const PR_FETCHED = 75;
  82         const PR_COMPLETION = 76;
  83         const PR_DIRECT = 77;
  84         const PR_ACTIVITY = 78;
  85         const PR_DISTRIBUTE = 79;
  86         const PR_PUSHED = 80;
  87         const PR_LOCAL = 81;
  88         const PR_AUDIENCE = 82;
  89
  90         // system.accept_only_sharer setting values
  91         const COMPLETION_NONE    = 1;
  92         const COMPLETION_COMMENT = 0;
  93         const COMPLETION_LIKE    = 2;
  94
  95         // Field list that is used to display the items
  96         const DISPLAY_FIELDLIST = [
  97                 'uid', 'id', 'parent', 'guid', 'network', 'gravity',
  98                 'uri-id', 'uri', 'thr-parent-id', 'thr-parent', 'parent-uri-id', 'parent-uri', 'conversation',
  99                 'commented', 'created', 'edited', 'received', 'verb', 'object-type', 'postopts', 'plink',
 100                 'wall', 'private', 'starred', 'origin', 'parent-origin', 'title', 'body', 'language',
 101                 'content-warning', 'location', 'coord', 'app', 'rendered-hash', 'rendered-html', 'object',
 102                 'quote-uri', 'quote-uri-id', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'mention', 'global',
 103                 'author-id', 'author-link', 'author-alias', 'author-name', 'author-avatar', 'author-network', 'author-updated', 'author-gsid', 'author-baseurl', 'author-addr', 'author-uri-id',
 104                 'owner-id', 'owner-link', 'owner-alias', 'owner-name', 'owner-avatar', 'owner-network', 'owner-contact-type', 'owner-updated', 'owner-gsid',
 105                 'causer-id', 'causer-link', 'causer-alias', 'causer-name', 'causer-avatar', 'causer-contact-type', 'causer-network', 'causer-gsid',
 106                 'contact-id', 'contact-uid', 'contact-link', 'contact-name', 'contact-avatar',
 107                 'writable', 'self', 'cid', 'alias',
 108                 'event-created', 'event-edited', 'event-start', 'event-finish',
 109                 'event-summary', 'event-desc', 'event-location', 'event-type',
 110                 'event-nofinish', 'event-ignore', 'event-id',
 111                 'question-id', 'question-multiple', 'question-voters', 'question-end-time',
 112                 'has-categories', 'has-media',
 113                 'delivery_queue_count', 'delivery_queue_done', 'delivery_queue_failed'
 114         ];
 115
 116         // Field list that is used to deliver items via the protocols
 117         const DELIVER_FIELDLIST = [
 118                 'uid', 'id', 'parent', 'uri-id', 'uri', 'thr-parent', 'parent-uri', 'guid',
 119                 'parent-guid', 'conversation', 'received', 'created', 'edited', 'verb', 'object-type', 'object', 'target',
 120                 'private', 'title', 'body', 'raw-body', 'location', 'coord', 'app',
 121                 'inform', 'deleted', 'extid', 'post-type', 'post-reason', 'gravity',
 122                 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid',
 123                 'author-id', 'author-addr', 'author-link', 'author-name', 'author-avatar', 'owner-id', 'owner-link', 'contact-uid',
 124                 'signed_text', 'network', 'wall', 'contact-id', 'plink', 'origin',
 125                 'thr-parent-id', 'parent-uri-id', 'quote-uri', 'quote-uri-id', 'postopts', 'pubmail',
 126                 'event-created', 'event-edited', 'event-start', 'event-finish',
 127                 'event-summary', 'event-desc', 'event-location', 'event-type',
 128                 'event-nofinish', 'event-ignore', 'event-id'
 129         ];
 130
 131         // All fields in the item table
 132         const ITEM_FIELDLIST = [
 133                 'id', 'uid', 'parent', 'uri', 'parent-uri', 'thr-parent',
 134                 'guid', 'uri-id', 'parent-uri-id', 'thr-parent-id', 'conversation', 'vid',
 135                 'quote-uri', 'quote-uri-id', 'contact-id', 'wall', 'gravity', 'extid', 'psid',
 136                 'created', 'edited', 'commented', 'received', 'changed', 'verb',
 137                 'postopts', 'plink', 'resource-id', 'event-id', 'inform',
 138                 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'post-type', 'post-reason',
 139                 'private', 'pubmail', 'visible', 'starred',
 140                 'unseen', 'deleted', 'origin', 'mention', 'global', 'network',
 141                 'title', 'content-warning', 'body', 'location', 'coord', 'app',
 142                 'rendered-hash', 'rendered-html', 'object-type', 'object', 'target-type', 'target',
 143                 'author-id', 'author-link', 'author-name', 'author-avatar', 'author-network',
 144                 'owner-id', 'owner-link', 'owner-name', 'owner-avatar', 'causer-id'
 145         ];
 146
 147         // List of all verbs that don't need additional content data.
 148         // Never reorder or remove entries from this list. Just add new ones at the end, if needed.
 149         const ACTIVITIES = [
 150                 Activity::LIKE, Activity::DISLIKE,
 151                 Activity::ATTEND, Activity::ATTENDNO, Activity::ATTENDMAYBE,
 152                 Activity::FOLLOW,
 153                 Activity::ANNOUNCE
 154         ];
 155
 156         // Privacy levels
 157         const PUBLIC = 0;
 158         const PRIVATE = 1;
 159         const UNLISTED = 2;
 160
 161         // Item weight for query ordering
 162         const GRAVITY_PARENT   = 0;
 163         const GRAVITY_ACTIVITY = 3;
 164         const GRAVITY_COMMENT  = 6;
 165         const GRAVITY_UNKNOWN  = 9;
 166
 167         /**
 168          * Update existing item entries
 169          *
 170          * @param array $fields    The fields that are to be changed
 171          * @param array $condition The condition for finding the item entries
 172          *
 173          * In the future we may have to change permissions as well.
 174          * Then we had to add the user id as third parameter.
 175          *
 176          * A return value of "0" doesn't mean an error - but that 0 rows had been changed.
 177          *
 178          * @return integer|boolean number of affected rows - or "false" if there was an error
 179          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 180          */
 181         public static function update(array $fields, array $condition)
 182         {
 183                 if (empty($condition) || empty($fields)) {
 184                         return false;
 185                 }
 186
 187                 if (isset($fields['extid'])) {
 188                         $fields['external-id'] = ItemURI::getIdByURI($fields['extid']);
 189                 }
 190
 191                 if (!empty($fields['verb'])) {
 192                         $fields['vid'] = Verb::getID($fields['verb']);
 193                 }
 194
 195                 if (!empty($fields['edited'])) {
 196                         $previous = Post::selectFirst(['edited'], $condition);
 197                 }
 198
 199                 $rows = Post::update($fields, $condition);
 200                 if (is_bool($rows)) {
 201                         return $rows;
 202                 }
 203
 204                 // We only need to call the line by line update for specific fields
 205                 if (
 206                         empty($fields['body']) && empty($fields['file']) &&
 207                         empty($fields['attach']) && empty($fields['edited'])
 208                 ) {
 209                         return $rows;
 210                 }
 211
 212                 Logger::info('Updating per single row method', ['fields' => $fields, 'condition' => $condition]);
 213
 214                 $items = Post::select(['id', 'origin', 'uri-id', 'uid', 'author-network', 'quote-uri-id'], $condition);
 215
 216                 $notify_items = [];
 217
 218                 while ($item = DBA::fetch($items)) {
 219                         if (!empty($fields['body'])) {
 220                                 if (!empty($item['quote-uri-id'])) {
 221                                         $fields['body'] = BBCode::removeSharedData($fields['body']);
 222
 223                                         if (!empty($fields['raw-body'])) {
 224                                                 $fields['raw-body'] = BBCode::removeSharedData($fields['raw-body']);
 225                                         }
 226                                 }
 227
 228                                 $content_fields = ['raw-body' => trim($fields['raw-body'] ?? $fields['body'])];
 229
 230                                 // Remove all media attachments from the body and store them in the post-media table
 231                                 // @todo On shared postings (Diaspora style and commented reshare) don't fetch content from the shared part
 232                                 $content_fields['raw-body'] = Post\Media::insertFromBody($item['uri-id'], $content_fields['raw-body']);
 233                                 $content_fields['raw-body'] = self::setHashtags($content_fields['raw-body']);
 234
 235                                 Post\Media::insertFromRelevantUrl($item['uri-id'], $content_fields['raw-body'], $fields['body'], $item['author-network']);
 236
 237                                 Post\Media::insertFromAttachmentData($item['uri-id'], $fields['body']);
 238                                 $content_fields['raw-body'] = BBCode::removeAttachment($content_fields['raw-body']);
 239
 240                                 Post\Content::update($item['uri-id'], $content_fields);
 241                         }
 242
 243                         if (!empty($fields['file'])) {
 244                                 Post\Category::storeTextByURIId($item['uri-id'], $item['uid'], $fields['file']);
 245                         }
 246
 247                         if (!empty($fields['attach'])) {
 248                                 Post\Media::insertFromAttachment($item['uri-id'], $fields['attach']);
 249                         }
 250
 251                         // We only need to notify others when it is an original entry from us.
 252                         // Only call the notifier when the item had been edited and records had been changed.
 253                         if ($item['origin'] && !empty($fields['edited']) && ($previous['edited'] != $fields['edited'])) {
 254                                 $notify_items[] = $item['id'];
 255                         }
 256                 }
 257
 258                 DBA::close($items);
 259
 260                 foreach ($notify_items as $notify_item) {
 261                         $post = Post::selectFirst([], ['id' => $notify_item]);
 262
 263                         if ($post['gravity'] != self::GRAVITY_PARENT) {
 264                                 $signed = Diaspora::createCommentSignature($post);
 265                                 if (!empty($signed)) {
 266                                         DBA::replace('diaspora-interaction', ['uri-id' => $post['uri-id'], 'interaction' => json_encode($signed)]);
 267                                 }
 268                         }
 269
 270                         Worker::add(Worker::PRIORITY_HIGH, 'Notifier', Delivery::POST, (int)$post['uri-id'], (int)$post['uid']);
 271                 }
 272
 273                 return $rows;
 274         }
 275
 276         /**
 277          * Delete an item and notify others about it - if it was ours
 278          *
 279          * @param array   $condition The condition for finding the item entries
 280          * @param integer $priority  Priority for the notification
 281          * @return void
 282          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 283          */
 284         public static function markForDeletion(array $condition, int $priority = Worker::PRIORITY_HIGH)
 285         {
 286                 $items = Post::select(['id'], $condition);
 287                 while ($item = Post::fetch($items)) {
 288                         self::markForDeletionById($item['id'], $priority);
 289                 }
 290                 DBA::close($items);
 291         }
 292
 293         /**
 294          * Delete an item for an user and notify others about it - if it was ours
 295          *
 296          * @param array   $condition The condition for finding the item entries
 297          * @param integer $uid       User who wants to delete this item
 298          * @return void
 299          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 300          */
 301         public static function deleteForUser(array $condition, int $uid)
 302         {
 303                 if ($uid == 0) {
 304                         return;
 305                 }
 306
 307                 $items = Post::select(['id', 'uid', 'uri-id'], $condition);
 308                 while ($item = Post::fetch($items)) {
 309                         if (in_array($item['uid'], [$uid, 0])) {
 310                                 Post\User::update($item['uri-id'], $uid, ['hidden' => true], true);
 311                                 Post\ThreadUser::update($item['uri-id'], $uid, ['hidden' => true], true);
 312                         }
 313
 314                         if ($item['uid'] == $uid) {
 315                                 self::markForDeletionById($item['id'], Worker::PRIORITY_HIGH);
 316                         } elseif ($item['uid'] != 0) {
 317                                 Logger::warning('Wrong ownership. Not deleting item', ['id' => $item['id']]);
 318                         }
 319                 }
 320                 DBA::close($items);
 321         }
 322
 323         /**
 324          * Mark an item for deletion, delete related data and notify others about it - if it was ours
 325          *
 326          * @param integer $item_id
 327          * @param integer $priority Priority for the notification
 328          * @return boolean success
 329          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 330          */
 331         public static function markForDeletionById(int $item_id, int $priority = Worker::PRIORITY_HIGH): bool
 332         {
 333                 Logger::info('Mark item for deletion by id', ['id' => $item_id, 'callstack' => System::callstack()]);
 334                 // locate item to be deleted
 335                 $fields = [
 336                         'id', 'uri', 'uri-id', 'uid', 'parent', 'parent-uri-id', 'origin',
 337                         'deleted', 'resource-id', 'event-id',
 338                         'verb', 'object-type', 'object', 'target', 'contact-id', 'psid', 'gravity'
 339                 ];
 340                 $item = Post::selectFirst($fields, ['id' => $item_id]);
 341                 if (!DBA::isResult($item)) {
 342                         Logger::info('Item not found.', ['id' => $item_id]);
 343                         return false;
 344                 }
 345
 346                 if ($item['deleted']) {
 347                         Logger::info('Item has already been marked for deletion.', ['id' => $item_id]);
 348                         return false;
 349                 }
 350
 351                 $parent = Post::selectFirst(['origin'], ['id' => $item['parent']]);
 352                 if (!DBA::isResult($parent)) {
 353                         $parent = ['origin' => false];
 354                 }
 355
 356                 // clean up categories and tags so they don't end up as orphans
 357                 Post\Category::deleteByURIId($item['uri-id'], $item['uid']);
 358
 359                 /*
 360                  * If item is a link to a photo resource, nuke all the associated photos
 361                  * (visitors will not have photo resources)
 362                  * This only applies to photos uploaded from the photos page. Photos inserted into a post do not
 363                  * generate a resource-id and therefore aren't intimately linked to the item.
 364                  */
 365                 /// @TODO: this should first check if photo is used elsewhere
 366                 if ($item['resource-id']) {
 367                         Photo::delete(['resource-id' => $item['resource-id'], 'uid' => $item['uid']]);
 368                 }
 369
 370                 // If item is a link to an event, delete the event.
 371                 if (intval($item['event-id'])) {
 372                         Event::delete($item['event-id']);
 373                 }
 374
 375                 // If item has attachments, drop them
 376                 $attachments = Post\Media::getByURIId($item['uri-id'], [Post\Media::DOCUMENT]);
 377                 foreach ($attachments as $attachment) {
 378                         if (preg_match('|attach/(\d+)|', $attachment['url'], $matches)) {
 379                                 Attach::delete(['id' => $matches[1], 'uid' => $item['uid']]);
 380                         }
 381                 }
 382
 383                 // Set the item to "deleted"
 384                 $item_fields = ['deleted' => true, 'edited' => DateTimeFormat::utcNow(), 'changed' => DateTimeFormat::utcNow()];
 385                 Post::update($item_fields, ['id' => $item['id']]);
 386
 387                 Post\Category::storeTextByURIId($item['uri-id'], $item['uid'], '');
 388
 389                 if (!Post::exists(["`uri-id` = ? AND `uid` != 0 AND NOT `deleted`", $item['uri-id']])) {
 390                         self::markForDeletion(['uri-id' => $item['uri-id'], 'uid' => 0, 'deleted' => false], $priority);
 391                 }
 392
 393                 Post\DeliveryData::delete($item['uri-id']);
 394
 395                 // If it's the parent of a comment thread, kill all the kids
 396                 if ($item['gravity'] == self::GRAVITY_PARENT) {
 397                         self::markForDeletion(['parent' => $item['parent'], 'deleted' => false], $priority);
 398                 }
 399
 400                 // Is it our comment and/or our thread?
 401                 if (($item['origin'] || $parent['origin']) && ($item['uid'] != 0)) {
 402                         // When we delete the original post we will delete all existing copies on the server as well
 403                         self::markForDeletion(['uri-id' => $item['uri-id'], 'deleted' => false], $priority);
 404
 405                         // send the notification upstream/downstream
 406                         if ($priority) {
 407                                 Worker::add(['priority' => $priority, 'dont_fork' => true], 'Notifier', Delivery::DELETION, (int)$item['uri-id'], (int)$item['uid']);
 408                         }
 409                 } elseif ($item['uid'] != 0) {
 410                         Post\User::update($item['uri-id'], $item['uid'], ['hidden' => true]);
 411                         Post\ThreadUser::update($item['uri-id'], $item['uid'], ['hidden' => true]);
 412                 }
 413
 414                 DI::notify()->deleteForItem($item['uri-id']);
 415                 DI::notification()->deleteForItem($item['uri-id']);
 416
 417                 Logger::info('Item has been marked for deletion.', ['id' => $item_id]);
 418
 419                 return true;
 420         }
 421
 422         /**
 423          * Get guid from given item record
 424          *
 425          * @param array $item Item record
 426          * @param bool Whether to notify (?)
 427          * @return string Guid
 428          */
 429         public static function guid(array $item, bool $notify): string
 430         {
 431                 if (!empty($item['guid'])) {
 432                         return trim($item['guid']);
 433                 }
 434
 435                 if ($notify) {
 436                         // We have to avoid duplicates. So we create the GUID in form of a hash of the plink or uri.
 437                         // We add the hash of our own host because our host is the original creator of the post.
 438                         $prefix_host = DI::baseUrl()->getHost();
 439                 } else {
 440                         $prefix_host = '';
 441
 442                         // We are only storing the post so we create a GUID from the original hostname.
 443                         if (!empty($item['author-link'])) {
 444                                 $parsed = parse_url($item['author-link']);
 445                                 if (!empty($parsed['host'])) {
 446                                         $prefix_host = $parsed['host'];
 447                                 }
 448                         }
 449
 450                         if (empty($prefix_host) && !empty($item['plink'])) {
 451                                 $parsed = parse_url($item['plink']);
 452                                 if (!empty($parsed['host'])) {
 453                                         $prefix_host = $parsed['host'];
 454                                 }
 455                         }
 456
 457                         if (empty($prefix_host) && !empty($item['uri'])) {
 458                                 $parsed = parse_url($item['uri']);
 459                                 if (!empty($parsed['host'])) {
 460                                         $prefix_host = $parsed['host'];
 461                                 }
 462                         }
 463
 464                         // Is it in the format data@host.tld? - Used for mail contacts
 465                         if (empty($prefix_host) && !empty($item['author-link']) && strstr($item['author-link'], '@')) {
 466                                 $mailparts = explode('@', $item['author-link']);
 467                                 $prefix_host = array_pop($mailparts);
 468                         }
 469                 }
 470
 471                 if (!empty($item['plink'])) {
 472                         $guid = self::guidFromUri($item['plink'], $prefix_host);
 473                 } elseif (!empty($item['uri'])) {
 474                         $guid = self::guidFromUri($item['uri'], $prefix_host);
 475                 } else {
 476                         $guid = System::createUUID(hash('crc32', $prefix_host));
 477                 }
 478
 479                 return $guid;
 480         }
 481
 482         /**
 483          * Returns contact id from given item record
 484          *
 485          * @param array $item Item record
 486          * @return int Contact id
 487          */
 488         private static function contactId(array $item): int
 489         {
 490                 if ($item['uid'] == 0) {
 491                         return $item['owner-id'];
 492                 }
 493
 494                 if ($item['origin']) {
 495                         $owner = User::getOwnerDataById($item['uid']);
 496                         return $owner['id'];
 497                 }
 498
 499                 $contact_id      = 0;
 500                 $user_contact_id = 0;
 501                 foreach (['group-link', 'causer-link', 'owner-link', 'author-link'] as $field) {
 502                         if (empty($item[$field])) {
 503                                 continue;
 504                         }
 505                         if (!$user_contact_id && Contact::isSharingByURL($item[$field], $item['uid'], true)) {
 506                                 $user_contact_id = Contact::getIdForURL($item[$field], $item['uid']);
 507                         } elseif (!$contact_id) {
 508                                 $contact_id = Contact::getIdForURL($item[$field]);
 509                         }
 510                 }
 511
 512                 if ($user_contact_id) {
 513                         return $user_contact_id;
 514                 }
 515
 516                 if (!empty($item['causer-id']) && Contact::isSharing($item['causer-id'], $item['uid'], true)) {
 517                         $cdata = Contact::getPublicAndUserContactID($item['causer-id'], $item['uid']);
 518                         if (!empty($cdata['user'])) {
 519                                 return $cdata['user'];
 520                         }
 521                 }
 522
 523                 if ($contact_id) {
 524                         return $contact_id;
 525                 }
 526
 527                 Logger::warning('contact-id could not be fetched, using self contact instead.', ['uid' => $item['uid'], 'item' => $item]);
 528                 $self = Contact::selectFirst(['id'], ['self' => true, 'uid' => $item['uid']]);
 529                 return $self['id'];
 530         }
 531
 532         /**
 533          * Write an item array into a spool file to be inserted later.
 534          * This command is called whenever there are issues storing an item.
 535          *
 536          * @param array $item The item fields that are to be inserted
 537          * @throws \Exception
 538          */
 539         private static function spool(array $item)
 540         {
 541                 // Now we store the data in the spool directory
 542                 // We use "microtime" to keep the arrival order and "mt_rand" to avoid duplicates
 543                 $file = 'item-' . round(microtime(true) * 10000) . '-' . mt_rand() . '.msg';
 544
 545                 $spoolpath = System::getSpoolPath();
 546                 if ($spoolpath != '') {
 547                         $spool = $spoolpath . '/' . $file;
 548
 549                         file_put_contents($spool, json_encode($item));
 550                         Logger::warning("Item wasn't stored - Item was spooled into file", ['file' => $file]);
 551                 }
 552         }
 553
 554         /**
 555          * Check if the item array is a duplicate
 556          *
 557          * @param array $item Item record
 558          * @return boolean is it a duplicate?
 559          */
 560         private static function isDuplicate(array $item): bool
 561         {
 562                 // Checking if there is already an item with the same guid
 563                 $condition = ['guid' => $item['guid'], 'network' => $item['network'], 'uid' => $item['uid']];
 564                 if (Post::exists($condition)) {
 565                         Logger::notice('Found already existing item', $condition);
 566                         return true;
 567                 }
 568
 569                 $condition = [
 570                         'uri-id' => $item['uri-id'], 'uid' => $item['uid'],
 571                         'network' => [$item['network'], Protocol::DFRN]
 572                 ];
 573                 if (Post::exists($condition)) {
 574                         Logger::notice('duplicated item with the same uri found.', $condition);
 575                         return true;
 576                 }
 577
 578                 // On Friendica and Diaspora the GUID is unique
 579                 if (in_array($item['network'], [Protocol::DFRN, Protocol::DIASPORA])) {
 580                         $condition = ['guid' => $item['guid'], 'uid' => $item['uid']];
 581                         if (Post::exists($condition)) {
 582                                 Logger::notice('duplicated item with the same guid found.', $condition);
 583                                 return true;
 584                         }
 585                 } elseif ($item['network'] == Protocol::OSTATUS) {
 586                         // Check for an existing post with the same content. There seems to be a problem with OStatus.
 587                         $condition = [
 588                                 "`body` = ? AND `network` = ? AND `created` = ? AND `contact-id` = ? AND `uid` = ?",
 589                                 $item['body'], $item['network'], $item['created'], $item['contact-id'], $item['uid']
 590                         ];
 591                         if (Post::exists($condition)) {
 592                                 Logger::notice('duplicated item with the same body found.', $item);
 593                                 return true;
 594                         }
 595                 }
 596
 597                 /*
 598                  * Check for already added items.
 599                  * There is a timing issue here that sometimes creates double postings.
 600                  * An unique index would help - but the limitations of MySQL (maximum size of index values) prevent this.
 601                  */
 602                 if (($item['uid'] == 0) && Post::exists(['uri-id' => $item['uri-id'], 'uid' => 0])) {
 603                         Logger::notice('Global item already stored.', ['uri-id' => $item['uri-id'], 'network' => $item['network']]);
 604                         return true;
 605                 }
 606
 607                 return false;
 608         }
 609
 610         /**
 611          * Check if the item array is valid
 612          *
 613          * @param array $item Item record
 614          * @return boolean item is valid
 615          */
 616         public static function isValid(array $item): bool
 617         {
 618                 // When there is no content then we don't post it
 619                 if (($item['body'] . $item['title'] == '') && empty($item['quote-uri-id']) && empty($item['attachments']) && (empty($item['uri-id']) || !Post\Media::existsByURIId($item['uri-id']))) {
 620                         Logger::notice('No body, no title.');
 621                         return false;
 622                 }
 623
 624                 if (!empty($item['uid'])) {
 625                         $owner = User::getOwnerDataById($item['uid'], false);
 626                         if (!$owner) {
 627                                 Logger::warning('Missing item user owner data', ['uid' => $item['uid']]);
 628                                 return false;
 629                         }
 630
 631                         if ($owner['account_expired'] || $owner['account_removed']) {
 632                                 Logger::notice('Item user has been deleted/expired/removed', ['uid' => $item['uid'], 'deleted' => $owner['deleted'], 'account_expired' => $owner['account_expired'], 'account_removed' => $owner['account_removed']]);
 633                                 return false;
 634                         }
 635                 }
 636
 637                 if (!empty($item['author-id']) && Contact::isBlocked($item['author-id'])) {
 638                         Logger::notice('Author is blocked node-wide', ['author-link' => $item['author-link'], 'item-uri' => $item['uri']]);
 639                         return false;
 640                 }
 641
 642                 if (!empty($item['author-link']) && Network::isUrlBlocked($item['author-link'])) {
 643                         Logger::notice('Author server is blocked', ['author-link' => $item['author-link'], 'item-uri' => $item['uri']]);
 644                         return false;
 645                 }
 646
 647                 if (!empty($item['owner-id']) && Contact::isBlocked($item['owner-id'])) {
 648                         Logger::notice('Owner is blocked node-wide', ['owner-link' => $item['owner-link'], 'item-uri' => $item['uri']]);
 649                         return false;
 650                 }
 651
 652                 if (!empty($item['owner-link']) && Network::isUrlBlocked($item['owner-link'])) {
 653                         Logger::notice('Owner server is blocked', ['owner-link' => $item['owner-link'], 'item-uri' => $item['uri']]);
 654                         return false;
 655                 }
 656
 657                 if ($item['verb'] == Activity::FOLLOW) {
 658                         if (!$item['origin'] && ($item['author-id'] == Contact::getPublicIdByUserId($item['uid']))) {
 659                                 // Our own follow request can be relayed to us. We don't store it to avoid notification chaos.
 660                                 Logger::info("Follow: Don't store not origin follow request", ['parent-uri' => $item['parent-uri']]);
 661                                 return false;
 662                         }
 663
 664                         $condition = [
 665                                 'verb' => Activity::FOLLOW, 'uid' => $item['uid'],
 666                                 'parent-uri' => $item['parent-uri'], 'author-id' => $item['author-id']
 667                         ];
 668                         if (Post::exists($condition)) {
 669                                 // It happens that we receive multiple follow requests by the same author - we only store one.
 670                                 Logger::info('Follow: Found existing follow request from author', ['author-id' => $item['author-id'], 'parent-uri' => $item['parent-uri']]);
 671                                 return false;
 672                         }
 673                 }
 674
 675                 return true;
 676         }
 677
 678         /**
 679          * Check if the item array is too old
 680          *
 681          * @param array $item Item record
 682          * @return boolean item is too old
 683          */
 684         public static function isTooOld(array $item): bool
 685         {
 686                 // check for create date and expire time
 687                 $expire_interval = DI::config()->get('system', 'dbclean-expire-days', 0);
 688
 689                 $user = DBA::selectFirst('user', ['expire'], ['uid' => $item['uid']]);
 690                 if (DBA::isResult($user) && ($user['expire'] > 0) && (($user['expire'] < $expire_interval) || ($expire_interval == 0))) {
 691                         $expire_interval = $user['expire'];
 692                 }
 693
 694                 if (($expire_interval > 0) && !empty($item['created'])) {
 695                         $expire_date = time() - ($expire_interval * 86400);
 696                         $created_date = strtotime($item['created']);
 697                         if ($created_date < $expire_date) {
 698                                 Logger::notice('Item created before expiration interval.', [
 699                                         'created' => date('c', $created_date),
 700                                         'expired' => date('c', $expire_date),
 701                                         '$item' => $item
 702                                 ]);
 703                                 return true;
 704                         }
 705                 }
 706
 707                 return false;
 708         }
 709
 710         /**
 711          * Return the id of the given item array if it has been stored before
 712          *
 713          * @param array $item Item record
 714          * @return integer Item id or zero on error
 715          */
 716         private static function getDuplicateID(array $item): int
 717         {
 718                 if (empty($item['network']) || in_array($item['network'], Protocol::FEDERATED)) {
 719                         $condition = [
 720                                 '`uri-id` = ? AND `uid` = ? AND `network` IN (?, ?, ?, ?)',
 721                                 $item['uri-id'],
 722                                 $item['uid'],
 723                                 Protocol::ACTIVITYPUB,
 724                                 Protocol::DIASPORA,
 725                                 Protocol::DFRN,
 726                                 Protocol::OSTATUS
 727                         ];
 728                         $existing = Post::selectFirst(['id', 'network'], $condition);
 729                         if (DBA::isResult($existing)) {
 730                                 // We only log the entries with a different user id than 0. Otherwise we would have too many false positives
 731                                 if ($item['uid'] != 0) {
 732                                         Logger::notice('Item already existed for user', [
 733                                                 'uri-id' => $item['uri-id'],
 734                                                 'uid' => $item['uid'],
 735                                                 'network' => $item['network'],
 736                                                 'existing_id' => $existing['id'],
 737                                                 'existing_network' => $existing['network']
 738                                         ]);
 739                                 }
 740
 741                                 return $existing['id'];
 742                         }
 743                 }
 744                 return 0;
 745         }
 746
 747         /**
 748          * Fetch the uri-id of the parent for the given uri-id
 749          *
 750          * @param integer $uriid
 751          * @return integer
 752          */
 753         public static function getParent(int $uriid): int
 754         {
 755                 $thread_parent = Post::selectFirstPost(['thr-parent-id', 'gravity'], ['uri-id' => $uriid]);
 756                 if (empty($thread_parent)) {
 757                         return 0;
 758                 }
 759
 760                 if ($thread_parent['gravity'] == Item::GRAVITY_PARENT) {
 761                         return $uriid;
 762                 }
 763
 764                 return self::getParent($thread_parent['thr-parent-id']);
 765         }
 766
 767         /**
 768          * Fetch top-level parent data for the given item array
 769          *
 770          * @param array $item
 771          * @return array item array with parent data
 772          * @throws \Exception
 773          */
 774         private static function getTopLevelParent(array $item): array
 775         {
 776                 $fields = [
 777                         'uid', 'uri', 'parent-uri', 'id', 'deleted',
 778                         'uri-id', 'parent-uri-id',
 779                         'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid',
 780                         'wall', 'private', 'origin', 'author-id'
 781                 ];
 782                 $condition = ['uri-id' => [$item['thr-parent-id'], $item['parent-uri-id']], 'uid' => $item['uid']];
 783                 $params = ['order' => ['id' => false]];
 784                 $parent = Post::selectFirst($fields, $condition, $params);
 785
 786                 if (!DBA::isResult($parent) && Post::exists(['uri-id' => [$item['thr-parent-id'], $item['parent-uri-id']], 'uid' => 0])) {
 787                         $stored = Item::storeForUserByUriId($item['thr-parent-id'], $item['uid'], ['post-reason' => Item::PR_COMPLETION]);
 788                         if (!$stored && ($item['thr-parent-id'] != $item['parent-uri-id'])) {
 789                                 $stored = Item::storeForUserByUriId($item['parent-uri-id'], $item['uid'], ['post-reason' => Item::PR_COMPLETION]);
 790                         }
 791                         if ($stored) {
 792                                 Logger::info('Stored thread parent item for user', ['uri-id' => $item['thr-parent-id'], 'uid' => $item['uid'], 'stored' => $stored]);
 793                                 $parent = Post::selectFirst($fields, $condition, $params);
 794                         }
 795                 }
 796
 797                 if (!DBA::isResult($parent)) {
 798                         Logger::notice('item parent was not found - ignoring item', ['uri-id' => $item['uri-id'], 'thr-parent-id' => $item['thr-parent-id'], 'uid' => $item['uid'], 'callstack' => System::callstack(20)]);
 799                         return [];
 800                 }
 801
 802                 if ($parent['uri-id'] == $parent['parent-uri-id']) {
 803                         return $parent;
 804                 }
 805
 806                 $condition = [
 807                         'uri-id' => $parent['parent-uri-id'],
 808                         'parent-uri-id' => $parent['parent-uri-id'],
 809                         'uid' => $parent['uid']
 810                 ];
 811                 $params = ['order' => ['id' => false]];
 812                 $toplevel_parent = Post::selectFirst($fields, $condition, $params);
 813
 814                 if (!DBA::isResult($toplevel_parent) && $item['origin']) {
 815                         $stored = Item::storeForUserByUriId($item['parent-uri-id'], $item['uid'], ['post-reason' => Item::PR_COMPLETION]);
 816                         Logger::info('Stored parent item for user', ['uri-id' => $item['parent-uri-id'], 'uid' => $item['uid'], 'stored' => $stored]);
 817                         $toplevel_parent = Post::selectFirst($fields, $condition, $params);
 818                 }
 819
 820                 if (!DBA::isResult($toplevel_parent)) {
 821                         Logger::notice('item top level parent was not found - ignoring item', ['parent-uri-id' => $parent['parent-uri-id'], 'uid' => $parent['uid']]);
 822                         return [];
 823                 }
 824
 825                 return $toplevel_parent;
 826         }
 827
 828         /**
 829          * Get the gravity for the given item array
 830          *
 831          * @param array $item
 832          * @return integer gravity
 833          */
 834         private static function getGravity(array $item): int
 835         {
 836                 $activity = DI::activity();
 837
 838                 if (isset($item['gravity'])) {
 839                         return intval($item['gravity']);
 840                 } elseif ($item['parent-uri-id'] === $item['uri-id']) {
 841                         return self::GRAVITY_PARENT;
 842                 } elseif ($activity->match($item['verb'], Activity::POST)) {
 843                         return self::GRAVITY_COMMENT;
 844                 } elseif ($activity->match($item['verb'], Activity::FOLLOW)) {
 845                         return self::GRAVITY_ACTIVITY;
 846                 } elseif ($activity->match($item['verb'], Activity::ANNOUNCE)) {
 847                         return self::GRAVITY_ACTIVITY;
 848                 }
 849
 850                 Logger::info('Unknown gravity for verb', ['verb' => $item['verb']]);
 851                 return self::GRAVITY_UNKNOWN;   // Should not happen
 852         }
 853
 854         private static function prepareOriginPost(array $item): array
 855         {
 856                 $item = DI::contentItem()->initializePost($item);
 857                 $item = DI::contentItem()->finalizePost($item);
 858
 859                 return $item;
 860         }
 861
 862         /**
 863          * Inserts item record
 864          *
 865          * @param array $item Item array to be inserted
 866          * @param int   $notify Notification (type?)
 867          * @param bool  $post_local (???)
 868          * @return int Zero means error, otherwise primary key (id) is being returned
 869          */
 870         public static function insert(array $item, int $notify = 0, bool $post_local = true): int
 871         {
 872                 $orig_item = $item;
 873
 874                 $priority = Worker::PRIORITY_HIGH;
 875
 876                 // If it is a posting where users should get notifications, then define it as wall posting
 877                 if ($notify) {
 878                         $item = self::prepareOriginPost($item);
 879
 880                         if (is_int($notify) && in_array($notify, Worker::PRIORITIES)) {
 881                                 $priority = $notify;
 882                         }
 883                 } else {
 884                         $item['network'] = trim(($item['network'] ?? '') ?: Protocol::PHANTOM);
 885                 }
 886
 887                 $uid = intval($item['uid']);
 888
 889                 $item['guid'] = self::guid($item, $notify);
 890                 $item['uri'] = substr(trim($item['uri'] ?? '') ?: self::newURI($item['guid']), 0, 255);
 891
 892                 // Store URI data
 893                 $item['uri-id'] = ItemURI::insert(['uri' => $item['uri'], 'guid' => $item['guid']]);
 894
 895                 // Backward compatibility: parent-uri used to be the direct parent uri.
 896                 // If it is provided without a thr-parent, it probably is the old behavior.
 897                 if (empty($item['thr-parent']) || empty($item['parent-uri'])) {
 898                         $item['thr-parent'] = trim($item['thr-parent'] ?? $item['parent-uri'] ?? $item['uri']);
 899                         $item['parent-uri'] = $item['thr-parent'];
 900                 }
 901
 902                 $item['thr-parent-id'] = ItemURI::getIdByURI($item['thr-parent']);
 903                 $item['parent-uri-id'] = ItemURI::getIdByURI($item['parent-uri']);
 904
 905                 // Store conversation data
 906                 $source = $item['source'] ?? '';
 907                 unset($item['conversation-uri']);
 908                 unset($item['conversation-href']);
 909                 unset($item['source']);
 910
 911                 /*
 912                  * Do we already have this item?
 913                  * We have to check several networks since Friendica posts could be repeated
 914                  * via OStatus (maybe Diaspora as well)
 915                  */
 916                 $duplicate = self::getDuplicateID($item);
 917                 if ($duplicate) {
 918                         return $duplicate;
 919                 }
 920
 921                 // Additional duplicate checks
 922                 /// @todo Check why the first duplication check returns the item number and the second a 0
 923                 if (self::isDuplicate($item)) {
 924                         return 0;
 925                 }
 926
 927                 if (!isset($item['post-type'])) {
 928                         $item['post-type'] = empty($item['title']) ? self::PT_NOTE : self::PT_ARTICLE;
 929                 }
 930
 931                 $defined_permissions = isset($item['allow_cid']) && isset($item['allow_gid']) && isset($item['deny_cid']) && isset($item['deny_gid']) && isset($item['private']);
 932
 933                 $item['wall']          = intval($item['wall'] ?? 0);
 934                 $item['extid']         = trim($item['extid'] ?? '');
 935                 $item['author-name']   = trim($item['author-name'] ?? '');
 936                 $item['author-link']   = trim($item['author-link'] ?? '');
 937                 $item['author-avatar'] = trim($item['author-avatar'] ?? '');
 938                 $item['owner-name']    = trim($item['owner-name'] ?? '');
 939                 $item['owner-link']    = trim($item['owner-link'] ?? '');
 940                 $item['owner-avatar']  = trim($item['owner-avatar'] ?? '');
 941                 $item['received']      = (isset($item['received'])  ? DateTimeFormat::utc($item['received'])  : DateTimeFormat::utcNow());
 942                 $item['created']       = (isset($item['created'])   ? DateTimeFormat::utc($item['created'])   : $item['received']);
 943                 $item['edited']        = (isset($item['edited'])    ? DateTimeFormat::utc($item['edited'])    : $item['created']);
 944                 $item['changed']       = (isset($item['changed'])   ? DateTimeFormat::utc($item['changed'])   : $item['created']);
 945                 $item['commented']     = (isset($item['commented']) ? DateTimeFormat::utc($item['commented']) : $item['created']);
 946                 $item['title']         = substr(trim($item['title'] ?? ''), 0, 255);
 947                 $item['location']      = trim($item['location'] ?? '');
 948                 $item['coord']         = trim($item['coord'] ?? '');
 949                 $item['visible']       = (isset($item['visible']) ? intval($item['visible']) : 1);
 950                 $item['deleted']       = 0;
 951                 $item['verb']          = trim($item['verb'] ?? '');
 952                 $item['object-type']   = trim($item['object-type'] ?? '');
 953                 $item['object']        = trim($item['object'] ?? '');
 954                 $item['target-type']   = trim($item['target-type'] ?? '');
 955                 $item['target']        = trim($item['target'] ?? '');
 956                 $item['plink']         = substr(trim($item['plink'] ?? ''), 0, 255);
 957                 $item['allow_cid']     = trim($item['allow_cid'] ?? '');
 958                 $item['allow_gid']     = trim($item['allow_gid'] ?? '');
 959                 $item['deny_cid']      = trim($item['deny_cid'] ?? '');
 960                 $item['deny_gid']      = trim($item['deny_gid'] ?? '');
 961                 $item['private']       = intval($item['private'] ?? self::PUBLIC);
 962                 $item['body']          = trim($item['body'] ?? '');
 963                 $item['raw-body']      = trim($item['raw-body'] ?? $item['body']);
 964                 $item['app']           = trim($item['app'] ?? '');
 965                 $item['origin']        = intval($item['origin'] ?? 0);
 966                 $item['postopts']      = trim($item['postopts'] ?? '');
 967                 $item['resource-id']   = trim($item['resource-id'] ?? '');
 968                 $item['event-id']      = intval($item['event-id'] ?? 0);
 969                 $item['inform']        = trim($item['inform'] ?? '');
 970                 $item['file']          = trim($item['file'] ?? '');
 971
 972                 // Communities aren't working with the Diaspora protocol
 973                 if (($uid != 0) && ($item['network'] == Protocol::DIASPORA)) {
 974                         $user = User::getById($uid, ['account-type']);
 975                         if ($user['account-type'] == Contact::TYPE_COMMUNITY) {
 976                                 Logger::info('Community posts are not supported via Diaspora');
 977                                 return 0;
 978                         }
 979                 }
 980
 981                 // Items cannot be stored before they happen ...
 982                 if ($item['created'] > DateTimeFormat::utcNow()) {
 983                         $item['created'] = DateTimeFormat::utcNow();
 984                 }
 985
 986                 // We haven't invented time travel by now.
 987                 if ($item['edited'] > DateTimeFormat::utcNow()) {
 988                         $item['edited'] = DateTimeFormat::utcNow();
 989                 }
 990
 991                 $item['plink'] = ($item['plink'] ?? '') ?: DI::baseUrl() . '/display/' . urlencode($item['guid']);
 992
 993                 $item['gravity'] = self::getGravity($item);
 994
 995                 $default = [
 996                         'url' => $item['author-link'], 'name' => $item['author-name'],
 997                         'photo' => $item['author-avatar'], 'network' => $item['network']
 998                 ];
 999                 $item['author-id'] = ($item['author-id'] ?? 0) ?: Contact::getIdForURL($item['author-link'], 0, null, $default);
1000
1001                 $default = [
1002                         'url' => $item['owner-link'], 'name' => $item['owner-name'],
1003                         'photo' => $item['owner-avatar'], 'network' => $item['network']
1004                 ];
1005                 $item['owner-id'] = ($item['owner-id'] ?? 0) ?: Contact::getIdForURL($item['owner-link'], 0, null, $default);
1006
1007                 $item['post-reason'] = self::getPostReason($item);
1008
1009                 // Ensure that there is an avatar cache
1010                 Contact::checkAvatarCache($item['author-id']);
1011                 Contact::checkAvatarCache($item['owner-id']);
1012
1013                 $item['contact-id'] = self::contactId($item);
1014
1015                 if (
1016                         !empty($item['direction']) && in_array($item['direction'], [Conversation::PUSH, Conversation::RELAY]) &&
1017                         empty($item['origin']) && self::isTooOld($item)
1018                 ) {
1019                         Logger::info('Item is too old', ['item' => $item]);
1020                         return 0;
1021                 }
1022
1023                 if (!self::isValid($item)) {
1024                         return 0;
1025                 }
1026
1027                 if ($item['gravity'] !== self::GRAVITY_PARENT) {
1028                         $toplevel_parent = self::getTopLevelParent($item);
1029                         if (empty($toplevel_parent)) {
1030                                 return 0;
1031                         }
1032
1033                         $parent_id             = $toplevel_parent['id'];
1034                         $item['parent-uri']    = $toplevel_parent['uri'];
1035                         $item['parent-uri-id'] = $toplevel_parent['uri-id'];
1036                         $item['deleted']       = $toplevel_parent['deleted'];
1037                         $item['wall']          = $toplevel_parent['wall'];
1038
1039                         // Reshares have to keep their permissions to allow groups to work
1040                         if (!$defined_permissions && (!$item['origin'] || ($item['verb'] != Activity::ANNOUNCE))) {
1041                                 $item['allow_cid']     = $toplevel_parent['allow_cid'];
1042                                 $item['allow_gid']     = $toplevel_parent['allow_gid'];
1043                                 $item['deny_cid']      = $toplevel_parent['deny_cid'];
1044                                 $item['deny_gid']      = $toplevel_parent['deny_gid'];
1045                         }
1046
1047                         $parent_origin         = $toplevel_parent['origin'];
1048
1049                         // Don't federate received participation messages
1050                         if ($item['verb'] != Activity::FOLLOW) {
1051                                 $item['wall'] = $toplevel_parent['wall'];
1052                         } else {
1053                                 $item['wall'] = false;
1054                                 // Participations are technical messages, so they are set to "seen" automatically
1055                                 $item['unseen'] = false;
1056                         }
1057
1058                         /*
1059                          * If the parent is private, force privacy for the entire conversation
1060                          * This differs from the above settings as it subtly allows comments from
1061                          * email correspondents to be private even if the overall thread is not.
1062                          */
1063                         if (!$defined_permissions && $toplevel_parent['private']) {
1064                                 $item['private'] = $toplevel_parent['private'];
1065                         }
1066
1067                         // If its a post that originated here then tag the thread as "mention"
1068                         if ($item['origin'] && $item['uid']) {
1069                                 DBA::update('post-thread-user', ['mention' => true], ['uri-id' => $item['parent-uri-id'], 'uid' => $item['uid']]);
1070                                 Logger::info('tagged thread as mention', ['parent' => $parent_id, 'parent-uri-id' => $item['parent-uri-id'], 'uid' => $item['uid']]);
1071                         }
1072
1073                         // Update the contact relations
1074                         Contact\Relation::store($toplevel_parent['author-id'], $item['author-id'], $item['created']);
1075                 } else {
1076                         $parent_id = 0;
1077                         $parent_origin = $item['origin'];
1078
1079                         if ($item['wall'] && empty($item['conversation'])) {
1080                                 $item['conversation'] = $item['parent-uri'] . '#context';
1081                         }
1082                 }
1083
1084                 if ($item['origin']) {
1085                         if (
1086                                 Photo::setPermissionFromBody($item['body'], $item['uid'], $item['contact-id'], $item['allow_cid'], $item['allow_gid'], $item['deny_cid'], $item['deny_gid'])
1087                                 && ($item['object-type'] != Activity\ObjectType::EVENT)
1088                         ) {
1089                                 $item['object-type'] = Activity\ObjectType::IMAGE;
1090                         }
1091
1092                         $item = DI::contentItem()->moveAttachmentsFromBodyToAttach($item);
1093                 }
1094
1095                 $item['parent-uri-id'] = ItemURI::getIdByURI($item['parent-uri']);
1096                 $item['thr-parent-id'] = ItemURI::getIdByURI($item['thr-parent']);
1097
1098                 if (!empty($item['conversation']) && empty($item['conversation-id'])) {
1099                         $item['conversation-id'] = ItemURI::getIdByURI($item['conversation']);
1100                 }
1101
1102                 // Is this item available in the global items (with uid=0)?
1103                 if ($item['uid'] == 0) {
1104                         $item['global'] = true;
1105
1106                         // Set the global flag on all items if this was a global item entry
1107                         Post::update(['global' => true], ['uri-id' => $item['uri-id']]);
1108                 } else {
1109                         $item['global'] = Post::exists(['uid' => 0, 'uri-id' => $item['uri-id']]);
1110                 }
1111
1112                 // ACL settings
1113                 if (!$defined_permissions && !empty($item['allow_cid'] . $item['allow_gid'] . $item['deny_cid'] . $item['deny_gid'])) {
1114                         $item['private'] = self::PRIVATE;
1115                 }
1116
1117                 if ($notify && $post_local) {
1118                         $item['edit'] = false;
1119                         $item['parent'] = $parent_id;
1120
1121                         // Trigger automatic reactions for addons
1122                         if (!isset($item['api_source'])) {
1123                                 $item['api_source'] = true;
1124                         }
1125
1126                         // We have to tell the hooks who we are - this really should be improved
1127                         if (!DI::userSession()->getLocalUserId()) {
1128                                 $_SESSION['authenticated'] = true;
1129                                 $_SESSION['uid'] = $uid;
1130                                 $dummy_session = true;
1131                         } else {
1132                                 $dummy_session = false;
1133                         }
1134
1135                         Hook::callAll('post_local', $item);
1136
1137                         if ($dummy_session) {
1138                                 unset($_SESSION['authenticated']);
1139                                 unset($_SESSION['uid']);
1140                         }
1141                 } elseif (!$notify) {
1142                         Hook::callAll('post_remote', $item);
1143                 }
1144
1145                 if (!empty($item['cancel'])) {
1146                         Logger::notice('post cancelled by addon.');
1147                         return 0;
1148                 }
1149
1150                 if (empty($item['vid']) && !empty($item['verb'])) {
1151                         $item['vid'] = Verb::getID($item['verb']);
1152                 }
1153
1154                 // Creates or assigns the permission set
1155                 $item['psid'] = DI::permissionSet()->selectOrCreate(
1156                         DI::permissionSetFactory()->createFromString(
1157                                 $item['uid'],
1158                                 $item['allow_cid'],
1159                                 $item['allow_gid'],
1160                                 $item['deny_cid'],
1161                                 $item['deny_gid']
1162                         )
1163                 )->id;
1164
1165                 if (!empty($item['extid'])) {
1166                         $item['external-id'] = ItemURI::getIdByURI($item['extid']);
1167                 }
1168
1169                 if ($item['verb'] == Activity::ANNOUNCE) {
1170                         self::setOwnerforResharedItem($item);
1171                 }
1172
1173                 if (isset($item['attachments'])) {
1174                         foreach ($item['attachments'] as $attachment) {
1175                                 $attachment['uri-id'] = $item['uri-id'];
1176                                 Post\Media::insert($attachment);
1177                         }
1178                         unset($item['attachments']);
1179                 }
1180
1181                 if (empty($item['quote-uri-id'])) {
1182                         $quote_id = self::getQuoteUriId($item['body']);
1183                         if (!empty($quote_id)) {
1184                                 // This is one of these "should not happen" situations.
1185                                 // The protocol implementations should already have done this job.
1186                                 Logger::notice('Quote-uri-id detected in post', ['id' => $quote_id, 'guid' => $item['guid'], 'uri-id' => $item['uri-id'], 'callstack' => System::callstack(20)]);
1187                                 $item['quote-uri-id'] = $quote_id;
1188                         }
1189                 }
1190
1191                 if (!empty($item['quote-uri-id']) && ($item['quote-uri-id'] == $item['uri-id'])) {
1192                         Logger::info('Quote-Uri-Id is identical to Uri-Id', ['uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
1193                         unset($item['quote-uri-id']);
1194                 }
1195
1196                 if (!empty($item['quote-uri-id'])) {
1197                         $item['raw-body'] = BBCode::removeSharedData($item['raw-body']);
1198                         $item['body']     = BBCode::removeSharedData($item['body']);
1199                 }
1200
1201                 // Remove all media attachments from the body and store them in the post-media table
1202                 $item['raw-body'] = Post\Media::insertFromBody($item['uri-id'], $item['raw-body']);
1203                 $item['raw-body'] = self::setHashtags($item['raw-body']);
1204
1205                 $author = Contact::getById($item['author-id'], ['network']);
1206                 Post\Media::insertFromRelevantUrl($item['uri-id'], $item['raw-body'], $item['body'], $author['network'] ?? '');
1207
1208                 Post\Media::insertFromAttachmentData($item['uri-id'], $item['body']);
1209                 $item['body']     = BBCode::removeAttachment($item['body']);
1210                 $item['raw-body'] = BBCode::removeAttachment($item['raw-body']);
1211
1212                 // Check for hashtags in the body and repair or add hashtag links
1213                 $item['body'] = self::setHashtags($item['body']);
1214
1215                 $item['language'] = self::getLanguage($item);
1216
1217                 $notify_type = Delivery::POST;
1218
1219                 // Filling item related side tables
1220                 if (!empty($item['attach'])) {
1221                         Post\Media::insertFromAttachment($item['uri-id'], $item['attach']);
1222                 }
1223
1224                 if (empty($item['event-id'])) {
1225                         unset($item['event-id']);
1226
1227                         $ev = Event::fromBBCode($item['body']);
1228                         if ((!empty($ev['desc']) || !empty($ev['summary'])) && !empty($ev['start'])) {
1229                                 Logger::info('Event found.');
1230                                 $ev['cid']       = $item['contact-id'];
1231                                 $ev['uid']       = $item['uid'];
1232                                 $ev['uri']       = $item['uri'];
1233                                 $ev['edited']    = $item['edited'];
1234                                 $ev['private']   = $item['private'];
1235                                 $ev['guid']      = $item['guid'];
1236                                 $ev['plink']     = $item['plink'];
1237                                 $ev['network']   = $item['network'];
1238                                 $ev['protocol']  = $item['protocol'] ?? Conversation::PARCEL_UNKNOWN;
1239                                 $ev['direction'] = $item['direction'] ?? Conversation::UNKNOWN;
1240                                 $ev['source']    = $item['source'] ?? '';
1241
1242                                 $event = DBA::selectFirst('event', ['id'], ['uri' => $item['uri'], 'uid' => $item['uid']]);
1243                                 if (DBA::isResult($event)) {
1244                                         $ev['id'] = $event['id'];
1245                                 }
1246
1247                                 $event_id = Event::store($ev);
1248                                 $item = Event::getItemArrayForImportedId($event_id, $item);
1249
1250                                 Logger::info('Event was stored', ['id' => $event_id]);
1251                         }
1252                 }
1253
1254                 if (empty($item['causer-id'])) {
1255                         unset($item['causer-id']);
1256                 }
1257
1258                 if (in_array($item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
1259                         $content_warning = BBCode::getAbstract($item['body'], Protocol::ACTIVITYPUB);
1260                         if (!empty($content_warning) && empty($item['content-warning'])) {
1261                                 $item['content-warning'] = BBCode::toPlaintext($content_warning);
1262                         }
1263                 }
1264
1265                 $inserted = Post::insert($item['uri-id'], $item);
1266
1267                 if ($item['gravity'] == self::GRAVITY_PARENT) {
1268                         Post\Thread::insert($item['uri-id'], $item);
1269                 }
1270
1271                 // The content of activities normally doesn't matter - except for likes from Misskey
1272                 if (!in_array($item['verb'], self::ACTIVITIES) || in_array($item['verb'], [Activity::LIKE, Activity::DISLIKE]) && !empty($item['body']) && (mb_strlen($item['body']) == 1)) {
1273                         Post\Content::insert($item['uri-id'], $item);
1274                 }
1275
1276                 $item['parent'] = $parent_id;
1277
1278                 // Create Diaspora signature
1279                 if ($item['origin'] && empty($item['diaspora_signed_text']) && ($item['gravity'] != self::GRAVITY_PARENT)) {
1280                         $signed = Diaspora::createCommentSignature($item);
1281                         if (!empty($signed)) {
1282                                 $item['diaspora_signed_text'] = json_encode($signed);
1283                         }
1284                 }
1285
1286                 if (!empty($item['diaspora_signed_text'])) {
1287                         DBA::replace('diaspora-interaction', ['uri-id' => $item['uri-id'], 'interaction' => $item['diaspora_signed_text']]);
1288                 }
1289
1290                 // Attached file links
1291                 if (!empty($item['file'])) {
1292                         Post\Category::storeTextByURIId($item['uri-id'], $item['uid'], $item['file']);
1293                 }
1294
1295                 // Delivery relevant data
1296                 $delivery_data = Post\DeliveryData::extractFields($item);
1297
1298                 if (!empty($item['origin']) || !empty($item['wall']) || !empty($delivery_data['postopts']) || !empty($delivery_data['inform'])) {
1299                         Post\DeliveryData::insert($item['uri-id'], $delivery_data);
1300                 }
1301
1302                 // Store tags from the body if this hadn't been handled previously in the protocol classes
1303                 if (!Tag::existsForPost($item['uri-id'])) {
1304                         Tag::storeFromBody($item['uri-id'], $item['body']);
1305                 }
1306
1307                 $condition = ['uri-id' => $item['uri-id'], 'uid' => $item['uid']];
1308                 if (Post::exists($condition)) {
1309                         Logger::notice('Item is already inserted - aborting', $condition);
1310                         return 0;
1311                 }
1312
1313                 $post_user_id = Post\User::insert($item['uri-id'], $item['uid'], $item);
1314                 if (!$post_user_id) {
1315                         Logger::notice('Post-User is already inserted - aborting', ['uid' => $item['uid'], 'uri-id' => $item['uri-id']]);
1316                         return 0;
1317                 }
1318
1319                 if ($item['gravity'] == self::GRAVITY_PARENT) {
1320                         $item['post-user-id'] = $post_user_id;
1321                         Post\ThreadUser::insert($item['uri-id'], $item['uid'], $item);
1322                 }
1323
1324                 Logger::notice('created item', ['post-id' => $post_user_id, 'uid' => $item['uid'], 'network' => $item['network'], 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
1325
1326                 $posted_item = Post::selectFirst(self::ITEM_FIELDLIST, ['post-user-id' => $post_user_id]);
1327                 if (!DBA::isResult($posted_item)) {
1328                         // On failure store the data into a spool file so that the "SpoolPost" worker can try again later.
1329                         Logger::warning('Could not store item. it will be spooled', ['id' => $post_user_id]);
1330                         self::spool($orig_item);
1331                         return 0;
1332                 }
1333
1334                 // update the commented timestamp on the parent
1335                 if (DI::config()->get('system', 'like_no_comment')) {
1336                         // Update when it is a comment
1337                         $update_commented = in_array($posted_item['gravity'], [self::GRAVITY_PARENT, self::GRAVITY_COMMENT]);
1338                 } else {
1339                         // Update when it isn't a follow or tag verb
1340                         $update_commented = !in_array($posted_item['verb'], [Activity::FOLLOW, Activity::TAG]);
1341                 }
1342
1343                 if ($update_commented) {
1344                         $fields = ['commented' => DateTimeFormat::utcNow(), 'changed' => DateTimeFormat::utcNow()];
1345                 } else {
1346                         $fields = ['changed' => DateTimeFormat::utcNow()];
1347                 }
1348
1349                 Post::update($fields, ['uri-id' => $posted_item['parent-uri-id'], 'uid' => $posted_item['uid']]);
1350
1351                 // In that function we check if this is a group post. Additionally we delete the item under certain circumstances
1352                 if (self::tagDeliver($posted_item['uid'], $post_user_id)) {
1353                         // Get the user information for the logging
1354                         $user = User::getById($uid);
1355
1356                         Logger::notice('Item had been deleted', ['id' => $post_user_id, 'user' => $uid, 'account-type' => $user['account-type']]);
1357                         return 0;
1358                 }
1359
1360                 if ($notify) {
1361                         DI::contentItem()->postProcessPost($posted_item);
1362                 } else {
1363                         Hook::callAll('post_remote_end', $posted_item);
1364                 }
1365
1366                 if ($posted_item['gravity'] === self::GRAVITY_PARENT) {
1367                         self::addShadow($post_user_id);
1368                 } else {
1369                         self::addShadowPost($post_user_id);
1370                 }
1371
1372                 self::updateContact($posted_item);
1373
1374                 Post\UserNotification::setNotification($posted_item['uri-id'], $posted_item['uid']);
1375
1376                 // Distribute items to users who subscribed to their tags
1377                 self::distributeByTags($posted_item);
1378
1379                 // Automatically reshare the item if the "remote_self" option is selected
1380                 self::autoReshare($posted_item);
1381
1382                 $transmit = $notify || ($posted_item['visible'] && ($parent_origin || $posted_item['origin']));
1383
1384                 if ($transmit) {
1385                         if ($posted_item['uid'] && Contact\User::isBlocked($posted_item['author-id'], $posted_item['uid'])) {
1386                                 Logger::info('Message from blocked author will not be relayed', ['item' => $posted_item['id'], 'uri' => $posted_item['uri'], 'cid' => $posted_item['author-id']]);
1387                                 $transmit = false;
1388                         }
1389                         if ($transmit && $posted_item['uid'] && Contact\User::isBlocked($posted_item['owner-id'], $posted_item['uid'])) {
1390                                 Logger::info('Message from blocked owner will not be relayed', ['item' => $posted_item['id'], 'uri' => $posted_item['uri'], 'cid' => $posted_item['owner-id']]);
1391                                 $transmit = false;
1392                         }
1393                         if ($transmit && !empty($posted_item['causer-id']) && $posted_item['uid'] && Contact\User::isBlocked($posted_item['causer-id'], $posted_item['uid'])) {
1394                                 Logger::info('Message from blocked causer will not be relayed', ['item' => $posted_item['id'], 'uri' => $posted_item['uri'], 'cid' => $posted_item['causer-id']]);
1395                                 $transmit = false;
1396                         }
1397
1398                         // Don't relay participation messages
1399                         if (($posted_item['verb'] == Activity::FOLLOW) &&
1400                                 (!$posted_item['origin'] || ($posted_item['author-id'] != Contact::getPublicIdByUserId($uid)))
1401                         ) {
1402                                 Logger::info('Participation messages will not be relayed', ['item' => $posted_item['id'], 'uri' => $posted_item['uri'], 'verb' => $posted_item['verb']]);
1403                                 $transmit = false;
1404                         }
1405                 }
1406
1407                 if (!empty($source) && ($transmit || DI::config()->get('debug', 'store_source'))) {
1408                         Post\Activity::insert($item['uri-id'], $source);
1409                 }
1410
1411                 if ($transmit) {
1412                         Worker::add(['priority' => $priority, 'dont_fork' => true], 'Notifier', $notify_type, (int)$posted_item['uri-id'], (int)$posted_item['uid']);
1413                 }
1414
1415                 // Fill the cache with the rendered content.
1416                 if (in_array($posted_item['gravity'], [self::GRAVITY_PARENT, self::GRAVITY_COMMENT]) && ($posted_item['uid'] == 0)) {
1417                         self::updateDisplayCache($posted_item['uri-id']);
1418                 }
1419
1420                 if ($inserted) {
1421                         Post\Engagement::storeFromItem($posted_item);
1422                 }
1423
1424                 return $post_user_id;
1425         }
1426
1427         /**
1428          * Fetch the post reason for a given item array
1429          *
1430          * @param array $item
1431          *
1432          * @return integer
1433          */
1434         public static function getPostReason(array $item): int
1435         {
1436                 $actor = ($item['gravity'] == self::GRAVITY_PARENT) ? $item['owner-id'] : $item['author-id'];
1437                 if (empty($item['origin']) && ($item['uid'] != 0) && Contact::isSharing($actor, $item['uid'])) {
1438                         return self::PR_FOLLOWER;
1439                 }
1440
1441                 if (!empty($item['origin']) && empty($item['post-reason'])) {
1442                         return self::PR_LOCAL;
1443                 }
1444
1445                 return $item['post-reason'] ?? self::PR_NONE;
1446         }
1447
1448         /**
1449          * Update the display cache
1450          *
1451          * @param integer $uri_id
1452          * @return void
1453          * @throws InternalServerErrorException
1454          * @throws \ImagickException
1455          */
1456         public static function updateDisplayCache(int $uri_id)
1457         {
1458                 $item = Post::selectFirst(self::DISPLAY_FIELDLIST, ['uri-id' => $uri_id]);
1459                 if (!$item) {
1460                         return;
1461                 }
1462
1463                 self::prepareBody($item, false, false, true);
1464         }
1465
1466         /**
1467          * Change the owner of a parent item if it had been shared by a group
1468          *
1469          * (public) group posts in the new format consist of the regular post by the author
1470          * followed by an announce message sent from the group account.
1471          * Changing the owner helps in grouping group posts.
1472          *
1473          * @param array $item
1474          * @return void
1475          */
1476         private static function setOwnerforResharedItem(array $item)
1477         {
1478                 $parent = Post::selectFirst(
1479                         ['id', 'causer-id', 'owner-id', 'author-id', 'author-link', 'origin', 'post-reason'],
1480                         ['uri-id' => $item['thr-parent-id'], 'uid' => $item['uid']]
1481                 );
1482                 if (!DBA::isResult($parent)) {
1483                         Logger::error('Parent not found', ['uri-id' => $item['thr-parent-id'], 'uid' => $item['uid']]);
1484                         return;
1485                 }
1486
1487                 $author = Contact::selectFirst(['url', 'contact-type', 'network'], ['id' => $item['author-id']]);
1488                 if (!DBA::isResult($author)) {
1489                         Logger::error('Author not found', ['id' => $item['author-id']]);
1490                         return;
1491                 }
1492
1493                 $self_contact = Contact::selectFirst(['id'], ['uid' => $item['uid'], 'self' => true]);
1494                 $self = !empty($self_contact) ? $self_contact['id'] : 0;
1495
1496                 $cid = Contact::getIdForURL($author['url'], $item['uid']);
1497                 if (empty($cid) || (!Contact::isSharing($cid, $item['uid']) && ($cid != $self))) {
1498                         Logger::info('The resharer is not a following contact: quit', ['resharer' => $author['url'], 'uid' => $item['uid'], 'cid' => $cid]);
1499                         return;
1500                 }
1501
1502                 if ($author['contact-type'] != Contact::TYPE_COMMUNITY) {
1503                         if ($parent['post-reason'] == self::PR_ANNOUNCEMENT) {
1504                                 Logger::info('The parent is already marked as announced: quit', ['causer' => $parent['causer-id'], 'owner' => $parent['owner-id'], 'author' => $parent['author-id'], 'uid' => $item['uid']]);
1505                                 return;
1506                         }
1507
1508                         if (Contact::isSharing($parent['owner-id'], $item['uid'])) {
1509                                 Logger::info('The resharer is no group: quit', ['resharer' => $item['author-id'], 'owner' => $parent['owner-id'], 'author' => $parent['author-id'], 'uid' => $item['uid']]);
1510                                 return;
1511                         }
1512                 }
1513
1514                 self::update(['post-reason' => self::PR_ANNOUNCEMENT, 'causer-id' => $item['author-id']], ['id' => $parent['id']]);
1515                 Logger::info('Set announcement post-reason', ['uri-id' => $item['uri-id'], 'thr-parent-id' => $item['thr-parent-id'], 'uid' => $item['uid']]);
1516         }
1517
1518         /**
1519          * Distribute the given item to users who subscribed to their tags
1520          *
1521          * @param array $item     Processed item
1522          */
1523         private static function distributeByTags(array $item)
1524         {
1525                 if (($item['uid'] != 0) || ($item['gravity'] != self::GRAVITY_PARENT) || !in_array($item['network'], Protocol::FEDERATED)) {
1526                         return;
1527                 }
1528
1529                 foreach (Tag::getUIDListByURIId($item['uri-id']) as $uid => $tags) {
1530                         $stored = self::storeForUserByUriId($item['uri-id'], $uid, ['post-reason' => self::PR_TAG]);
1531                         Logger::info('Stored item for users', ['uri-id' => $item['uri-id'], 'uid' => $uid, 'stored' => $stored]);
1532                         foreach ($tags as $tag) {
1533                                 $stored = Category::storeFileByURIId($item['uri-id'], $uid, Category::SUBCRIPTION, $tag);
1534                                 Logger::debug('Stored tag subscription for user', ['uri-id' => $item['uri-id'], 'uid' => $uid, $tag, 'stored' => $stored]);
1535                         }
1536                 }
1537         }
1538
1539         /**
1540          * Distributes public items to the receivers
1541          *
1542          * @param integer $itemid      Item ID that should be added
1543          * @param string  $signed_text Original text (for Diaspora signatures), JSON encoded.
1544          * @throws \Exception
1545          */
1546         public static function distribute(int $itemid, string $signed_text = '')
1547         {
1548                 $condition = ["`id` IN (SELECT `parent` FROM `post-user-view` WHERE `id` = ?)", $itemid];
1549                 $parent = Post::selectFirst(['owner-id'], $condition);
1550                 if (!DBA::isResult($parent)) {
1551                         Logger::warning('Item not found', ['condition' => $condition]);
1552                         return;
1553                 }
1554
1555                 // Only distribute public items from native networks
1556                 $condition = [
1557                         'id' => $itemid, 'uid' => 0,
1558                         'network' => array_merge(Protocol::FEDERATED, ['']),
1559                         'visible' => true, 'deleted' => false, 'private' => [self::PUBLIC, self::UNLISTED]
1560                 ];
1561                 $item = Post::selectFirst(array_merge(self::ITEM_FIELDLIST, ['protocol']), $condition);
1562                 if (!DBA::isResult($item)) {
1563                         Logger::warning('Item not found', ['condition' => $condition]);
1564                         return;
1565                 }
1566
1567                 $origin = $item['origin'];
1568
1569                 $users = [];
1570
1571                 /// @todo add a field "pcid" in the contact table that refers to the public contact id.
1572                 $owner = DBA::selectFirst('contact', ['url', 'nurl', 'alias'], ['id' => $parent['owner-id']]);
1573                 if (!DBA::isResult($owner)) {
1574                         return;
1575                 }
1576
1577                 $condition = ['nurl' => $owner['nurl'], 'rel' => [Contact::SHARING, Contact::FRIEND]];
1578                 $contacts = DBA::select('contact', ['uid'], $condition);
1579                 while ($contact = DBA::fetch($contacts)) {
1580                         if ($contact['uid'] == 0) {
1581                                 continue;
1582                         }
1583
1584                         $users[$contact['uid']] = $contact['uid'];
1585                 }
1586                 DBA::close($contacts);
1587
1588                 $condition = ['alias' => $owner['url'], 'rel' => [Contact::SHARING, Contact::FRIEND]];
1589                 $contacts = DBA::select('contact', ['uid'], $condition);
1590                 while ($contact = DBA::fetch($contacts)) {
1591                         if ($contact['uid'] == 0) {
1592                                 continue;
1593                         }
1594
1595                         $users[$contact['uid']] = $contact['uid'];
1596                 }
1597                 DBA::close($contacts);
1598
1599                 if (!empty($owner['alias'])) {
1600                         $condition = ['nurl' => Strings::normaliseLink($owner['alias']), 'rel' => [Contact::SHARING, Contact::FRIEND]];
1601                         $contacts = DBA::select('contact', ['uid'], $condition);
1602                         while ($contact = DBA::fetch($contacts)) {
1603                                 if ($contact['uid'] == 0) {
1604                                         continue;
1605                                 }
1606
1607                                 $users[$contact['uid']] = $contact['uid'];
1608                         }
1609                         DBA::close($contacts);
1610                 }
1611
1612                 $origin_uid = 0;
1613
1614                 if ($item['uri-id'] != $item['parent-uri-id']) {
1615                         $parents = Post::select(['uid', 'origin'], ["`uri-id` = ? AND `uid` != 0", $item['parent-uri-id']]);
1616                         while ($parent = Post::fetch($parents)) {
1617                                 $users[$parent['uid']] = $parent['uid'];
1618                                 if ($parent['origin'] && !$origin) {
1619                                         $origin_uid = $parent['uid'];
1620                                 }
1621                         }
1622                         DBA::close($parents);
1623                 }
1624
1625                 foreach ($users as $uid) {
1626                         if ($origin_uid == $uid) {
1627                                 $item['diaspora_signed_text'] = $signed_text;
1628                         }
1629                         $item['post-reason'] = self::PR_DISTRIBUTE;
1630                         self::storeForUser($item, $uid);
1631                 }
1632         }
1633
1634         /**
1635          * Store a public item defined by their URI-ID for the given users
1636          *
1637          * @param integer $uri_id     URI-ID of the given item
1638          * @param integer $uid        The user that will receive the item entry
1639          * @param array   $fields     Additional fields to be stored
1640          * @param integer $source_uid User id of the source post
1641          * @return integer stored item id
1642          */
1643         public static function storeForUserByUriId(int $uri_id, int $uid, array $fields = [], int $source_uid = 0): int
1644         {
1645                 if ($uid == $source_uid) {
1646                         Logger::warning('target UID must not be be equal to the source UID', ['uri-id' => $uri_id, 'uid' => $uid]);
1647                         return 0;
1648                 }
1649
1650                 $item = Post::selectFirst(array_merge(self::ITEM_FIELDLIST, ['protocol']), ['uri-id' => $uri_id, 'uid' => $source_uid]);
1651                 if (!DBA::isResult($item)) {
1652                         Logger::warning('Item could not be fetched', ['uri-id' => $uri_id, 'uid' => $source_uid]);
1653                         return 0;
1654                 }
1655
1656                 if (($uid != 0) && ($item['gravity'] == self::GRAVITY_PARENT)) {
1657                         $owner = User::getOwnerDataById($uid);
1658                         if (($owner['contact-type'] == User::ACCOUNT_TYPE_COMMUNITY) && !Tag::isMentioned($uri_id, $owner['url'])) {
1659                                 Logger::info('Target user is a group but is not mentioned here, thread will not be stored', ['uid' => $uid, 'uri-id' => $uri_id]);
1660                                 return 0;
1661                         }
1662                 }
1663
1664                 if (($source_uid == 0) && (($item['private'] == self::PRIVATE) || !in_array($item['network'], Protocol::FEDERATED))) {
1665                         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']]);
1666                         return 0;
1667                 }
1668
1669                 $item['post-reason'] = self::PR_STORED;
1670
1671                 $item = array_merge($item, $fields);
1672
1673                 if (($uid != 0) && Contact::isSharing(($item['gravity'] == Item::GRAVITY_PARENT) ? $item['owner-id'] : $item['author-id'], $uid)) {
1674                         $item['post-reason'] = self::PR_FOLLOWER;
1675                 }
1676
1677                 $is_reshare = ($item['gravity'] == self::GRAVITY_ACTIVITY) && ($item['verb'] == Activity::ANNOUNCE);
1678
1679                 if (($uid != 0) && (($item['gravity'] == self::GRAVITY_PARENT) || $is_reshare) &&
1680                         DI::pConfig()->get($uid, 'system', 'accept_only_sharer') == self::COMPLETION_NONE &&
1681                         !in_array($item['post-reason'], [self::PR_FOLLOWER, self::PR_TAG, self::PR_TO, self::PR_CC, self::PR_ACTIVITY, self::PR_AUDIENCE])
1682                 ) {
1683                         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']]);
1684                         return 0;
1685                 }
1686
1687                 $causer = $item['causer-id'] ?: $item['author-id'];
1688
1689                 if (($uri_id != $item['parent-uri-id']) && ($item['gravity'] == self::GRAVITY_COMMENT) && !Post::exists(['uri-id' => $item['parent-uri-id'], 'uid' => $uid])) {
1690                         if (!self::fetchParent($item['parent-uri-id'], $uid, $causer)) {
1691                                 Logger::info('Parent post had not been added', ['uri-id' => $item['parent-uri-id'], 'uid' => $uid, 'causer' => $causer]);
1692                                 return 0;
1693                         }
1694                         Logger::info('Fetched parent post', ['uri-id' => $item['parent-uri-id'], 'uid' => $uid, 'causer' => $causer]);
1695                 } elseif (($uri_id != $item['thr-parent-id']) && $is_reshare && !Post::exists(['uri-id' => $item['thr-parent-id'], 'uid' => $uid])) {
1696                         if (!self::fetchParent($item['thr-parent-id'], $uid, $causer)) {
1697                                 Logger::info('Thread parent had not been added', ['uri-id' => $item['thr-parent-id'], 'uid' => $uid, 'causer' => $causer]);
1698                                 return 0;
1699                         }
1700                         Logger::info('Fetched thread parent', ['uri-id' => $item['thr-parent-id'], 'uid' => $uid, 'causer' => $causer]);
1701                 }
1702
1703                 $stored = self::storeForUser($item, $uid);
1704                 Logger::info('Item stored for user', ['uri-id' => $item['uri-id'], 'uid' => $uid, 'causer' => $causer, 'source-uid' => $source_uid, 'stored' => $stored]);
1705                 return $stored;
1706         }
1707
1708         /**
1709          * Fetch the parent with the given uri-id
1710          *
1711          * @param integer $uri_id
1712          * @param integer $uid
1713          * @param integer $causer
1714          *
1715          * @return integer
1716          */
1717         private static function fetchParent(int $uri_id, int $uid, int $causer): int
1718         {
1719                 // Fetch the origin user for the post
1720                 $origin_uid = self::GetOriginUidForUriId($uri_id, $uid);
1721                 if (is_null($origin_uid)) {
1722                         Logger::info('Origin item was not found', ['uid' => $uid, 'uri-id' => $uri_id]);
1723                         return 0;
1724                 }
1725
1726                 return self::storeForUserByUriId($uri_id, $uid, ['causer-id' => $causer, 'post-reason' => self::PR_FETCHED], $origin_uid);
1727         }
1728
1729         /**
1730          * Returns the origin uid of a post if the given user is allowed to see it.
1731          *
1732          * @param int $uriid
1733          * @param int $uid
1734          * @return int
1735          */
1736         private static function GetOriginUidForUriId(int $uriid, int $uid)
1737         {
1738                 if (Post::exists(['uri-id' => $uriid, 'uid' => $uid])) {
1739                         return $uid;
1740                 }
1741
1742                 $post = Post::selectFirst(['uid', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'private'], ['uri-id' => $uriid, 'origin' => true]);
1743                 if (!empty($post)) {
1744                         if (in_array($post['private'], [Item::PUBLIC, Item::UNLISTED])) {
1745                                 return $post['uid'];
1746                         }
1747
1748                         $pcid = Contact::getPublicIdByUserId($uid);
1749                         if (empty($pcid)) {
1750                                 return null;
1751                         }
1752
1753                         foreach (Item::enumeratePermissions($post, true) as $receiver) {
1754                                 if ($receiver == $pcid) {
1755                                         return $post['uid'];
1756                                 }
1757                         }
1758
1759                         return null;
1760                 }
1761
1762                 if (Post::exists(['uri-id' => $uriid, 'uid' => 0])) {
1763                         return 0;
1764                 }
1765
1766                 // When the post belongs to a a group then all group users are allowed to access it
1767                 foreach (Tag::getByURIId($uriid, [Tag::MENTION, Tag::EXCLUSIVE_MENTION]) as $tag) {
1768                         if (DBA::exists('contact', ['uid' => $uid, 'nurl' => Strings::normaliseLink($tag['url']), 'contact-type' => Contact::TYPE_COMMUNITY])) {
1769                                 $target_uid = User::getIdForURL($tag['url']);
1770                                 if (!empty($target_uid)) {
1771                                         return $target_uid;
1772                                 }
1773                         }
1774                 }
1775
1776                 return null;
1777         }
1778
1779         /**
1780          * Store a public item array for the given users
1781          *
1782          * @param array   $item   The item entry that will be stored
1783          * @param integer $uid    The user that will receive the item entry
1784          * @return integer stored item id
1785          * @throws \Exception
1786          */
1787         private static function storeForUser(array $item, int $uid): int
1788         {
1789                 $post = Post::selectFirst(['id'], ['uri-id' => $item['uri-id'], 'uid' => $uid]);
1790                 if (!empty($post['id'])) {
1791                         if (!empty($item['event-id'])) {
1792                                 $event_post = Post::selectFirst(['event-id'], ['uri-id' => $item['uri-id'], 'uid' => $uid]);
1793                                 if (!empty($event_post['event-id'])) {
1794                                         $event = DBA::selectFirst('event', ['edited', 'start', 'finish', 'summary', 'desc', 'location', 'nofinish'], ['id' => $item['event-id']]);
1795                                         if (!empty($event)) {
1796                                                 // We aren't using "Event::store" here, since we don't want to trigger any further action
1797                                                 $ret = DBA::update('event', $event, ['id' => $event_post['event-id']]);
1798                                                 Logger::info('Event updated', ['uid' => $uid, 'source-event' => $item['event-id'], 'target-event' => $event_post['event-id'], 'ret' => $ret]);
1799                                         }
1800                                 }
1801                         }
1802                         Logger::info('Item already exists', ['uri-id' => $item['uri-id'], 'uid' => $uid, 'id' => $post['id']]);
1803                         return $post['id'];
1804                 }
1805
1806                 // Data from the "post-user" table
1807                 unset($item['id']);
1808                 unset($item['mention']);
1809                 unset($item['starred']);
1810                 unset($item['unseen']);
1811                 unset($item['psid']);
1812                 unset($item['pinned']);
1813                 unset($item['ignored']);
1814                 unset($item['pubmail']);
1815                 unset($item['event-id']);
1816                 unset($item['hidden']);
1817                 unset($item['notification-type']);
1818
1819                 // Data from the "post-delivery-data" table
1820                 unset($item['postopts']);
1821                 unset($item['inform']);
1822
1823                 $item['uid'] = $uid;
1824                 $item['origin'] = 0;
1825                 $item['wall'] = 0;
1826
1827                 $notify = false;
1828                 if ($item['gravity'] == self::GRAVITY_PARENT) {
1829                         $contact = DBA::selectFirst('contact', [], ['id' => $item['contact-id'], 'self' => false]);
1830                         if (DBA::isResult($contact)) {
1831                                 $notify = self::isRemoteSelf($contact, $item);
1832                                 $item['wall'] = (bool)$notify;
1833                         }
1834                 }
1835
1836                 $item['contact-id'] = self::contactId($item);
1837                 $distributed = self::insert($item, $notify);
1838
1839                 if (!$distributed) {
1840                         Logger::info("Distributed item wasn't stored", ['uri-id' => $item['uri-id'], 'user' => $uid]);
1841                 } else {
1842                         Logger::info('Distributed item was stored', ['uri-id' => $item['uri-id'], 'user' => $uid, 'stored' => $distributed]);
1843                 }
1844                 return $distributed;
1845         }
1846
1847         /**
1848          * Add a shadow entry for a given item id that is a thread starter
1849          *
1850          * We store every public item entry additionally with the user id "0".
1851          * This is used for the community page and for the search.
1852          * It is planned that in the future we will store public item entries only once.
1853          *
1854          * @param integer $itemid Item ID that should be added
1855          * @throws \Exception
1856          */
1857         private static function addShadow(int $itemid)
1858         {
1859                 $fields = ['uid', 'private', 'visible', 'deleted', 'network', 'uri-id'];
1860                 $condition = ['id' => $itemid, 'gravity' => self::GRAVITY_PARENT];
1861                 $item = Post::selectFirst($fields, $condition);
1862
1863                 if (!DBA::isResult($item)) {
1864                         return;
1865                 }
1866
1867                 // is it already a copy?
1868                 if (($itemid == 0) || ($item['uid'] == 0)) {
1869                         return;
1870                 }
1871
1872                 // Is it a visible public post?
1873                 if (!$item["visible"] || $item["deleted"]  || ($item["private"] == self::PRIVATE)) {
1874                         return;
1875                 }
1876
1877                 // is it an entry from a connector? Only add an entry for natively connected networks
1878                 if (!in_array($item["network"], array_merge(Protocol::FEDERATED, ['']))) {
1879                         return;
1880                 }
1881
1882                 if (Post::exists(['uri-id' => $item['uri-id'], 'uid' => 0])) {
1883                         return;
1884                 }
1885
1886                 $item = Post::selectFirst(array_merge(self::ITEM_FIELDLIST, ['protocol']), ['id' => $itemid]);
1887
1888                 if (DBA::isResult($item)) {
1889                         // Preparing public shadow (removing user specific data)
1890                         $item['uid'] = 0;
1891                         unset($item['id']);
1892                         unset($item['parent']);
1893                         unset($item['wall']);
1894                         unset($item['mention']);
1895                         unset($item['origin']);
1896                         unset($item['starred']);
1897                         unset($item['postopts']);
1898                         unset($item['inform']);
1899                         unset($item['post-reason']);
1900                         if ($item['uri-id'] == $item['parent-uri-id']) {
1901                                 $item['contact-id'] = $item['owner-id'];
1902                         } else {
1903                                 $item['contact-id'] = $item['author-id'];
1904                         }
1905
1906                         $public_shadow = self::insert($item);
1907
1908                         Logger::info('Stored public shadow', ['thread' => $itemid, 'id' => $public_shadow]);
1909                 }
1910         }
1911
1912         /**
1913          * Add a shadow entry for a given item id that is a comment
1914          *
1915          * This function does the same like the function above - but for comments
1916          *
1917          * @param integer $itemid Item ID that should be added
1918          * @throws \Exception
1919          */
1920         private static function addShadowPost(int $itemid)
1921         {
1922                 $item = Post::selectFirst(array_merge(self::ITEM_FIELDLIST, ['protocol']), ['id' => $itemid]);
1923                 if (!DBA::isResult($item)) {
1924                         return;
1925                 }
1926
1927                 // Is it a toplevel post?
1928                 if ($item['gravity'] == self::GRAVITY_PARENT) {
1929                         self::addShadow($itemid);
1930                         return;
1931                 }
1932
1933                 // Is this a shadow entry?
1934                 if ($item['uid'] == 0) {
1935                         return;
1936                 }
1937
1938                 // Is there a shadow parent?
1939                 if (!Post::exists(['uri-id' => $item['parent-uri-id'], 'uid' => 0])) {
1940                         return;
1941                 }
1942
1943                 // Is there already a shadow entry?
1944                 if (Post::exists(['uri-id' => $item['uri-id'], 'uid' => 0])) {
1945                         return;
1946                 }
1947
1948                 // Save "origin" and "parent" state
1949                 $origin = $item['origin'];
1950                 $parent = $item['parent'];
1951
1952                 // Preparing public shadow (removing user specific data)
1953                 $item['uid'] = 0;
1954                 unset($item['id']);
1955                 unset($item['parent']);
1956                 unset($item['wall']);
1957                 unset($item['mention']);
1958                 unset($item['origin']);
1959                 unset($item['starred']);
1960                 unset($item['postopts']);
1961                 unset($item['inform']);
1962                 unset($item['post-reason']);
1963                 $item['contact-id'] = Contact::getIdForURL($item['author-link']);
1964
1965                 $public_shadow = self::insert($item);
1966
1967                 Logger::info('Stored public shadow', ['uri-id' => $item['uri-id'], 'id' => $public_shadow]);
1968
1969                 // If this was a comment to a Diaspora post we don't get our comment back.
1970                 // This means that we have to distribute the comment by ourselves.
1971                 if ($origin && Post::exists(['id' => $parent, 'network' => Protocol::DIASPORA])) {
1972                         self::distribute($public_shadow);
1973                 }
1974         }
1975
1976         /**
1977          * Adds a language specification in a "language" element of given $arr.
1978          * Expects "body" element to exist in $arr.
1979          *
1980          * @param array $item
1981          * @return string detected language
1982          * @throws \Text_LanguageDetect_Exception
1983          */
1984         private static function getLanguage(array $item): string
1985         {
1986                 if (!empty($item['language'])) {
1987                         return $item['language'];
1988                 }
1989
1990                 if (!in_array($item['gravity'], [self::GRAVITY_PARENT, self::GRAVITY_COMMENT]) || empty($item['body'])) {
1991                         return '';
1992                 }
1993
1994                 $languages = self::getLanguageArray(trim($item['title'] . "\n" . $item['body']), 3, $item['uri-id'], $item['author-id']);
1995                 if (empty($languages)) {
1996                         return '';
1997                 }
1998
1999                 return json_encode($languages);
2000         }
2001
2002         /**
2003          * Get a language array from a given text
2004          *
2005          * @param string  $body
2006          * @param integer $count
2007          * @param integer $uri_id
2008          * @param integer $author_id
2009          * @return array
2010          */
2011         public static function getLanguageArray(string $body, int $count, int $uri_id = 0, int $author_id = 0): array
2012         {
2013                 $naked_body = BBCode::toSearchText($body, $uri_id);
2014
2015                 if ((count(explode(' ', $naked_body)) < 10) && (mb_strlen($naked_body) < 30) && $author_id) {
2016                         $author = Contact::selectFirst(['about'], ['id' => $author_id]);
2017                         if (!empty($author['about'])) {
2018                                 $about = BBCode::toSearchText($author['about'], 0);
2019                                 $about = self::getDominantLanguage($about);
2020                                 Logger::debug('About field added', ['author' => $author_id, 'body' => $naked_body, 'about' => $about]);
2021                                 $naked_body .= ' ' . $about;
2022                         }
2023                 }
2024
2025                 if (empty($naked_body)) {
2026                         return [];
2027                 }
2028
2029                 $naked_body = self::getDominantLanguage($naked_body);
2030
2031                 $availableLanguages = DI::l10n()->getAvailableLanguages(true);
2032                 $availableLanguages = DI::l10n()->convertForLanguageDetection($availableLanguages);
2033
2034                 $ld = new Language(array_keys($availableLanguages));
2035                 $languages = $ld->detect($naked_body)->limit(0, $count)->close() ?: [];
2036
2037                 $data = [
2038                         'text'     => $naked_body,
2039                         'detected' => $languages,
2040                         'uri-id'   => $uri_id,
2041                 ];
2042
2043                 Hook::callAll('detect_languages', $data);
2044                 $languages = $data['detected'];
2045
2046                 return $languages;
2047         }
2048
2049         /**
2050          * Check if latin or non latin are dominant in the body and only return the dominant one
2051          *
2052          * @param string $body
2053          * @return string
2054          */
2055         private static function getDominantLanguage(string $body): string
2056         {
2057                 $latin = '';
2058                 $non_latin = '';
2059                 for ($i = 0; $i < mb_strlen($body); $i++) {
2060                         $character = mb_substr($body, $i, 1);
2061                         $ord = mb_ord($character);
2062
2063                         // We add the most common characters to both strings.
2064                         if (($ord <= 64) || ($ord >= 91 && $ord <= 96) || ($ord >= 123 && $ord <= 191) || in_array($ord, [215, 247]) || ($ord >= 697 && $ord <= 735) || ($ord > 65535)) {
2065                                 $latin .= $character;
2066                                 $non_latin .= $character;
2067                         } elseif ($ord < 768) {
2068                                 $latin .= $character;
2069                         } else {
2070                                 $non_latin .= $character;
2071                         }
2072                 }
2073                 return (mb_strlen($latin) > mb_strlen($non_latin)) ? $latin : $non_latin;
2074         }
2075
2076         public static function getLanguageMessage(array $item): string
2077         {
2078                 $iso639 = new \Matriphe\ISO639\ISO639;
2079
2080                 $used_languages = '';
2081                 foreach (json_decode($item['language'], true) as $language => $reliability) {
2082                         $used_languages .= $iso639->languageByCode1($language) . ' (' . $language . "): " . number_format($reliability, 5) . '\n';
2083                 }
2084                 $used_languages = DI::l10n()->t('Detected languages in this post:\n%s', $used_languages);
2085                 return $used_languages;
2086         }
2087
2088         /**
2089          * Creates an unique guid out of a given uri.
2090          * This function is used for messages outside the fediverse (Connector posts, feeds, Mails, ...)
2091          * Posts that are created on this system are using System::createUUID.
2092          * Received ActivityPub posts are using Processor::getGUIDByURL.
2093          *
2094          * @param string      $uri  uri of an item entry
2095          * @param string|null $host hostname for the GUID prefix
2096          * @return string Unique guid
2097          * @throws \Exception
2098          */
2099         public static function guidFromUri(string $uri, string $host = null): string
2100         {
2101                 // Our regular guid routine is using this kind of prefix as well
2102                 // We have to avoid that different routines could accidentally create the same value
2103                 $parsed = parse_url($uri);
2104
2105                 // Remove the scheme to make sure that "https" and "http" doesn't make a difference
2106                 unset($parsed['scheme']);
2107
2108                 $hostPart = $host ?: $parsed['host'] ?? '';
2109                 if (!$hostPart) {
2110                         Logger::warning('Empty host GUID part', ['uri' => $uri, 'host' => $host, 'parsed' => $parsed, 'callstack' => System::callstack(10)]);
2111                 }
2112
2113                 // Glue it together to be able to make a hash from it
2114                 if (!empty($parsed)) {
2115                         $host_id = implode('/', $parsed);
2116                 } else {
2117                         $host_id = $uri;
2118                 }
2119
2120                 // Use a mixture of several hashes to provide some GUID like experience
2121                 return hash('crc32', $hostPart) . '-' . hash('joaat', $host_id) . '-' . hash('fnv164', $host_id);
2122         }
2123
2124         /**
2125          * generate an unique URI
2126          *
2127          * @param string $guid An existing GUID (Otherwise it will be generated)
2128          *
2129          * @return string
2130          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2131          */
2132         public static function newURI(string $guid = ''): string
2133         {
2134                 if ($guid == '') {
2135                         $guid = System::createUUID();
2136                 }
2137
2138                 return DI::baseUrl() . '/objects/' . $guid;
2139         }
2140
2141         /**
2142          * Set "success_update" and "last-item" to the date of the last time we heard from this contact
2143          *
2144          * This can be used to filter for inactive contacts.
2145          * Only do this for public postings to avoid privacy problems, since poco data is public.
2146          * Don't set this value if it isn't from the owner (could be an author that we don't know)
2147          *
2148          * @param array $arr Contains the just posted item record
2149          * @throws \Exception
2150          */
2151         private static function updateContact(array $arr)
2152         {
2153                 // Unarchive the author
2154                 $contact = DBA::selectFirst('contact', [], ['id' => $arr["author-id"]]);
2155                 if (DBA::isResult($contact)) {
2156                         Contact::unmarkForArchival($contact);
2157                 }
2158
2159                 // Unarchive the contact if it's not our own contact
2160                 $contact = DBA::selectFirst('contact', [], ['id' => $arr["contact-id"], 'self' => false]);
2161                 if (DBA::isResult($contact)) {
2162                         Contact::unmarkForArchival($contact);
2163                 }
2164
2165                 /// @todo On private posts we could obfuscate the date
2166                 $update = ($arr['private'] != self::PRIVATE) || in_array($arr['network'], Protocol::FEDERATED);
2167
2168                 // Is it a group? Then we don't care about the rules from above
2169                 if (!$update && in_array($arr["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN]) && ($arr["parent-uri-id"] === $arr["uri-id"])) {
2170                         if (DBA::exists('contact', ['id' => $arr['contact-id'], 'forum' => true])) {
2171                                 $update = true;
2172                         }
2173                 }
2174
2175                 if ($update) {
2176                         // The "self" contact id is used (for example in the connectors) when the contact is unknown
2177                         // So we have to ensure to only update the last item when it had been our own post,
2178                         // or it had been done by a "regular" contact.
2179                         if (!empty($arr['wall'])) {
2180                                 $condition = ['id' => $arr['contact-id']];
2181                         } else {
2182                                 $condition = ['id' => $arr['contact-id'], 'self' => false];
2183                         }
2184                         Contact::update(['failed' => false, 'local-data' => true, 'success_update' => $arr['received'], 'last-item' => $arr['received']], $condition);
2185                 }
2186                 // Now do the same for the system wide contacts with uid=0
2187                 if ($arr['private'] != self::PRIVATE) {
2188                         Contact::update(
2189                                 ['failed' => false, 'local-data' => true, 'success_update' => $arr['received'], 'last-item' => $arr['received']],
2190                                 ['id' => $arr['owner-id']]
2191                         );
2192
2193                         if ($arr['owner-id'] != $arr['author-id']) {
2194                                 Contact::update(
2195                                         ['failed' => false, 'local-data' => true, 'success_update' => $arr['received'], 'last-item' => $arr['received']],
2196                                         ['id' => $arr['author-id']]
2197                                 );
2198                         }
2199                 }
2200         }
2201
2202         public static function setHashtags(string $body): string
2203         {
2204                 $body = BBCode::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) {
2205                         $tags = BBCode::getTags($body);
2206
2207                         // No hashtags?
2208                         if (!count($tags)) {
2209                                 return $body;
2210                         }
2211
2212                         // This sorting is important when there are hashtags that are part of other hashtags
2213                         // Otherwise there could be problems with hashtags like #test and #test2
2214                         // Because of this we are sorting from the longest to the shortest tag.
2215                         usort($tags, function ($a, $b) {
2216                                 return strlen($b) <=> strlen($a);
2217                         });
2218
2219                         $URLSearchString = "^\[\]";
2220
2221                         // All hashtags should point to the home server if "local_tags" is activated
2222                         if (DI::config()->get('system', 'local_tags')) {
2223                                 $body = preg_replace(
2224                                         "/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
2225                                         "#[url=" . DI::baseUrl() . "/search?tag=$2]$2[/url]",
2226                                         $body
2227                                 );
2228                         }
2229
2230                         // mask hashtags inside of url, bookmarks and attachments to avoid urls in urls
2231                         $body = preg_replace_callback(
2232                                 "/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
2233                                 function ($match) {
2234                                         return ("[url=" . str_replace("#", "&num;", $match[1]) . "]" . str_replace("#", "&num;", $match[2]) . "[/url]");
2235                                 },
2236                                 $body
2237                         );
2238
2239                         $body = preg_replace_callback(
2240                                 "/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism",
2241                                 function ($match) {
2242                                         return ("[bookmark=" . str_replace("#", "&num;", $match[1]) . "]" . str_replace("#", "&num;", $match[2]) . "[/bookmark]");
2243                                 },
2244                                 $body
2245                         );
2246
2247                         $body = preg_replace_callback(
2248                                 "/\[attachment (.*?)\](.*?)\[\/attachment\]/ism",
2249                                 function ($match) {
2250                                         return ("[attachment " . str_replace("#", "&num;", $match[1]) . "]" . $match[2] . "[/attachment]");
2251                                 },
2252                                 $body
2253                         );
2254
2255                         // Repair recursive urls
2256                         $body = preg_replace(
2257                                 "/&num;\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
2258                                 "&num;$2",
2259                                 $body
2260                         );
2261
2262                         foreach ($tags as $tag) {
2263                                 if ((strpos($tag, '#') !== 0) || strpos($tag, '[url=') || strlen($tag) < 2 || $tag[1] == '#') {
2264                                         continue;
2265                                 }
2266
2267                                 $basetag = str_replace('_', ' ', substr($tag, 1));
2268                                 $newtag = '#[url=' . DI::baseUrl() . '/search?tag=' . $basetag . ']' . $basetag . '[/url]';
2269
2270                                 $body = str_replace($tag, $newtag, $body);
2271                         }
2272
2273                         // Convert back the masked hashtags
2274                         $body = str_replace("&num;", "#", $body);
2275
2276                         return $body;
2277                 });
2278
2279                 return $body;
2280         }
2281
2282         /**
2283          * look for mention tags and setup a second delivery chain for group/community posts if appropriate
2284          *
2285          * @param int $uid
2286          * @param int $item_id
2287          * @return boolean true if item was deleted, else false
2288          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2289          * @throws \ImagickException
2290          */
2291         private static function tagDeliver(int $uid, int $item_id): bool
2292         {
2293                 $owner = User::getOwnerDataById($uid);
2294                 if (!DBA::isResult($owner)) {
2295                         Logger::warning('User not found, quitting here.', ['uid' => $uid]);
2296                         return false;
2297                 }
2298
2299                 if ($owner['contact-type'] != User::ACCOUNT_TYPE_COMMUNITY) {
2300                         Logger::debug('Owner is no community, quitting here.', ['uid' => $uid, 'id' => $item_id]);
2301                         return false;
2302                 }
2303
2304                 $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $item_id, 'gravity' => [self::GRAVITY_PARENT, self::GRAVITY_COMMENT], 'origin' => false]);
2305                 if (!DBA::isResult($item)) {
2306                         Logger::debug('Post is an activity or origin or not found at all, quitting here.', ['id' => $item_id]);
2307                         return false;
2308                 }
2309
2310                 if ($item['gravity'] == self::GRAVITY_PARENT) {
2311                         if (Tag::isMentioned($item['uri-id'], $owner['url'])) {
2312                                 Logger::info('Mention found in tag.', ['uri' => $item['uri'], 'uid' => $uid, 'id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
2313                         } else {
2314                                 Logger::info('Top-level post without mention is deleted.', ['uri' => $item['uri'], $uid, 'id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
2315                                 Post\User::delete(['uri-id' => $item['uri-id'], 'uid' => $item['uid']]);
2316                                 return true;
2317                         }
2318
2319                         $arr = ['item' => $item, 'user' => $owner];
2320
2321                         Hook::callAll('tagged', $arr);
2322                 } else {
2323                         if (Tag::isMentioned($item['parent-uri-id'], $owner['url'])) {
2324                                 Logger::info('Mention found in parent tag.', ['uri' => $item['uri'], 'uid' => $uid, 'id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
2325                         } else {
2326                                 Logger::debug('No mentions found in parent, quitting here.', ['id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
2327                                 return false;
2328                         }
2329                 }
2330
2331                 Logger::info('Community post will be distributed', ['uri' => $item['uri'], 'uid' => $uid, 'id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
2332
2333                 if ($owner['page-flags'] == User::PAGE_FLAGS_PRVGROUP) {
2334                         $allow_cid = '';
2335                         $allow_gid = '<' . Circle::FOLLOWERS . '>';
2336                         $deny_cid  = '';
2337                         $deny_gid  = '';
2338                         self::performActivity($item['id'], 'announce', $uid, $allow_cid, $allow_gid, $deny_cid, $deny_gid);
2339                 } else {
2340                         self::performActivity($item['id'], 'announce', $uid);
2341                 }
2342
2343                 Logger::info('Community post had been distributed', ['uri' => $item['uri'], 'uid' => $uid, 'id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
2344                 return false;
2345         }
2346
2347         /**
2348          * Automatically reshare the item if the "remote_self" option is selected
2349          *
2350          * @param array $item
2351          * @return void
2352          */
2353         private static function autoReshare(array $item)
2354         {
2355                 if ($item['gravity'] != self::GRAVITY_PARENT) {
2356                         return;
2357                 }
2358
2359                 $cdata = Contact::getPublicAndUserContactID($item['author-id'], $item['uid']);
2360                 if (empty($cdata['user']) || ($cdata['user'] != $item['contact-id'])) {
2361                         return;
2362                 }
2363
2364                 if (!DBA::exists('contact', ['id' => $cdata['user'], 'remote_self' => LocalRelationship::MIRROR_NATIVE_RESHARE])) {
2365                         return;
2366                 }
2367
2368                 if (!in_array($item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
2369                         return;
2370                 }
2371
2372                 if (User::getById($item['uid'], ['blocked'])['blocked'] ?? false) {
2373                         return;
2374                 }
2375
2376                 Logger::info('Automatically reshare item', ['uid' => $item['uid'], 'id' => $item['id'], 'guid' => $item['guid'], 'uri-id' => $item['uri-id']]);
2377
2378                 self::performActivity($item['id'], 'announce', $item['uid']);
2379         }
2380
2381         public static function isRemoteSelf(array $contact, array &$datarray): bool
2382         {
2383                 if ($contact['remote_self'] != LocalRelationship::MIRROR_OWN_POST) {
2384                         return false;
2385                 }
2386
2387                 // Prevent the forwarding of posts that are forwarded
2388                 if (!empty($datarray['extid']) && ($datarray['extid'] == Protocol::DFRN)) {
2389                         Logger::info('Already forwarded');
2390                         return false;
2391                 }
2392
2393                 // Prevent to forward already forwarded posts
2394                 if ($datarray['app'] == DI::baseUrl()->getHost()) {
2395                         Logger::info('Already forwarded (second test)');
2396                         return false;
2397                 }
2398
2399                 // Only forward posts
2400                 if ($datarray['verb'] != Activity::POST) {
2401                         Logger::info('No post');
2402                         return false;
2403                 }
2404
2405                 if (($contact['network'] != Protocol::FEED) && ($datarray['private'] == self::PRIVATE)) {
2406                         Logger::info('Not public');
2407                         return false;
2408                 }
2409
2410                 if (User::getById($contact['uid'], ['blocked'])['blocked'] ?? false) {
2411                         Logger::info('User is blocked', ['contact' => $contact]);
2412                         return false;
2413                 }
2414
2415                 $datarray2 = $datarray;
2416                 Logger::info('remote-self start', ['contact' => $contact['url'], 'remote_self' => $contact['remote_self'], 'item' => $datarray]);
2417
2418                 $self = DBA::selectFirst(
2419                         'contact',
2420                         ['id', 'name', 'url', 'thumb'],
2421                         ['uid' => $contact['uid'], 'self' => true]
2422                 );
2423                 if (!DBA::isResult($self)) {
2424                         Logger::error('Self contact not found', ['uid' => $contact['uid']]);
2425                         return false;
2426                 }
2427
2428                 $datarray['contact-id'] = $self['id'];
2429
2430                 $datarray['author-name']   = $datarray['owner-name']   = $self['name'];
2431                 $datarray['author-link']   = $datarray['owner-link']   = $self['url'];
2432                 $datarray['author-avatar'] = $datarray['owner-avatar'] = $self['thumb'];
2433
2434                 unset($datarray['edited']);
2435
2436                 unset($datarray['network']);
2437                 unset($datarray['owner-id']);
2438                 unset($datarray['author-id']);
2439
2440                 if ($contact['network'] != Protocol::FEED) {
2441                         $old_uri_id = $datarray['uri-id'] ?? 0;
2442                         $datarray['guid'] = System::createUUID();
2443                         unset($datarray['plink']);
2444                         $datarray['uri'] = self::newURI($datarray['guid']);
2445                         $datarray['uri-id'] = ItemURI::getIdByURI($datarray['uri']);
2446                         $datarray['extid'] = Protocol::DFRN;
2447                         $urlpart = parse_url($datarray2['author-link']);
2448                         $datarray['app'] = $urlpart['host'];
2449                         if (!empty($old_uri_id)) {
2450                                 Post\Media::copy($old_uri_id, $datarray['uri-id']);
2451                         }
2452
2453                         unset($datarray['parent-uri']);
2454                         unset($datarray['thr-parent']);
2455
2456                         // Store the original post
2457                         $result = self::insert($datarray2);
2458                         Logger::info('remote-self post original item', ['contact' => $contact['url'], 'result' => $result, 'item' => $datarray2]);
2459                 } else {
2460                         $datarray['private'] = self::PUBLIC;
2461                         $datarray['app'] = 'Feed';
2462                         $result = true;
2463                 }
2464
2465                 return (bool)$result;
2466         }
2467
2468         /**
2469          *
2470          * @param string $s
2471          * @param int    $uid
2472          * @param array  $item
2473          * @param int    $cid
2474          * @return string
2475          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2476          * @throws \ImagickException
2477          */
2478         public static function fixPrivatePhotos(string $s, int $uid, array $item = null, int $cid = 0): string
2479         {
2480                 if (DI::config()->get('system', 'disable_embedded')) {
2481                         return $s;
2482                 }
2483
2484                 Logger::info('check for photos');
2485                 $site = substr(DI::baseUrl(), strpos(DI::baseUrl(), '://'));
2486
2487                 $orig_body = $s;
2488                 $new_body = '';
2489
2490                 $img_start = strpos($orig_body, '[img');
2491                 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
2492                 $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
2493
2494                 while (($img_st_close !== false) && ($img_len !== false)) {
2495                         $img_st_close++; // make it point to AFTER the closing bracket
2496                         $image = substr($orig_body, $img_start + $img_st_close, $img_len);
2497
2498                         Logger::info('found photo', ['image' => $image]);
2499
2500                         if (stristr($image, $site . '/photo/')) {
2501                                 // Only embed locally hosted photos
2502                                 $replace = false;
2503                                 $i = basename($image);
2504                                 $i = str_replace(['.jpg', '.png', '.gif'], ['', '', ''], $i);
2505                                 $x = strpos($i, '-');
2506
2507                                 if ($x) {
2508                                         $res = substr($i, $x + 1);
2509                                         $i = substr($i, 0, $x);
2510                                         $photo = Photo::getPhotoForUser($uid, $i, $res);
2511                                         if (DBA::isResult($photo)) {
2512                                                 /*
2513                                                  * Check to see if we should replace this photo link with an embedded image
2514                                                  * 1. No need to do so if the photo is public
2515                                                  * 2. If there's a contact-id provided, see if they're in the access list
2516                                                  *    for the photo. If so, embed it.
2517                                                  * 3. Otherwise, if we have an item, see if the item permissions match the photo
2518                                                  *    permissions, regardless of order but first check to see if they're an exact
2519                                                  *    match to save some processing overhead.
2520                                                  */
2521                                                 if (self::hasPermissions($photo)) {
2522                                                         if ($cid) {
2523                                                                 $recips = self::enumeratePermissions($photo);
2524                                                                 if (in_array($cid, $recips)) {
2525                                                                         $replace = true;
2526                                                                 }
2527                                                         } elseif ($item) {
2528                                                                 if (self::samePermissions($uid, $item, $photo)) {
2529                                                                         $replace = true;
2530                                                                 }
2531                                                         }
2532                                                 }
2533                                                 if ($replace) {
2534                                                         $photo_img = Photo::getImageForPhoto($photo);
2535                                                         // If a custom width and height were specified, apply before embedding
2536                                                         if (preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) {
2537                                                                 Logger::info('scaling photo');
2538
2539                                                                 $width = intval($match[1]);
2540                                                                 $height = intval($match[2]);
2541
2542                                                                 $photo_img->scaleDown(max($width, $height));
2543                                                         }
2544
2545                                                         $data = $photo_img->asString();
2546                                                         $type = $photo_img->getType();
2547
2548                                                         Logger::info('replacing photo');
2549                                                         $image = 'data:' . $type . ';base64,' . base64_encode($data);
2550                                                         Logger::debug('replaced', ['image' => $image]);
2551                                                 }
2552                                         }
2553                                 }
2554                         }
2555
2556                         $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]';
2557                         $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]'));
2558                         if ($orig_body === false) {
2559                                 $orig_body = '';
2560                         }
2561
2562                         $img_start = strpos($orig_body, '[img');
2563                         $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
2564                         $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false);
2565                 }
2566
2567                 $new_body = $new_body . $orig_body;
2568
2569                 return $new_body;
2570         }
2571
2572         private static function hasPermissions(array $obj)
2573         {
2574                 return !empty($obj['allow_cid']) || !empty($obj['allow_gid']) ||
2575                         !empty($obj['deny_cid']) || !empty($obj['deny_gid']);
2576         }
2577
2578         // @TODO $uid is unused parameter
2579         private static function samePermissions($uid, array $obj1, array $obj2): bool
2580         {
2581                 // first part is easy. Check that these are exactly the same.
2582                 if (($obj1['allow_cid'] == $obj2['allow_cid'])
2583                         && ($obj1['allow_gid'] == $obj2['allow_gid'])
2584                         && ($obj1['deny_cid'] == $obj2['deny_cid'])
2585                         && ($obj1['deny_gid'] == $obj2['deny_gid'])
2586                 ) {
2587                         return true;
2588                 }
2589
2590                 // This is harder. Parse all the permissions and compare the resulting set.
2591                 $recipients1 = self::enumeratePermissions($obj1);
2592                 $recipients2 = self::enumeratePermissions($obj2);
2593                 sort($recipients1);
2594                 sort($recipients2);
2595
2596                 /// @TODO Comparison of arrays, maybe use array_diff_assoc() here?
2597                 return ($recipients1 == $recipients2);
2598         }
2599
2600         /**
2601          * Returns an array of contact-ids that are allowed to see this object
2602          *
2603          * @param array $obj              Item array with at least uid, allow_cid, allow_gid, deny_cid and deny_gid
2604          * @param bool  $check_dead       Prunes unavailable contacts from the result
2605          * @param bool  $expand_followers Expand the list of followers
2606          * @return array
2607          * @throws \Exception
2608          */
2609         public static function enumeratePermissions(array $obj, bool $check_dead = false, bool $expand_followers = true): array
2610         {
2611                 $aclFormatter = DI::aclFormatter();
2612
2613                 if (!$expand_followers && (!empty($obj['deny_cid']) || !empty($obj['deny_gid']))) {
2614                         $expand_followers = true;
2615                 }
2616
2617                 $allow_people  = $aclFormatter->expand($obj['allow_cid']);
2618                 $allow_circles = Circle::expand($obj['uid'], $aclFormatter->expand($obj['allow_gid']), $check_dead, $expand_followers);
2619                 $deny_people   = $aclFormatter->expand($obj['deny_cid']);
2620                 $deny_circles  = Circle::expand($obj['uid'], $aclFormatter->expand($obj['deny_gid']), $check_dead);
2621                 $recipients    = array_unique(array_merge($allow_people, $allow_circles));
2622                 $deny          = array_unique(array_merge($deny_people, $deny_circles));
2623                 $recipients    = array_diff($recipients, $deny);
2624                 return $recipients;
2625         }
2626
2627         public static function expire(int $uid, int $days, string $network = "", bool $force = false)
2628         {
2629                 if (!$uid || ($days < 1)) {
2630                         return;
2631                 }
2632
2633                 $condition = [
2634                         "`uid` = ? AND NOT `deleted` AND `gravity` = ?",
2635                         $uid, self::GRAVITY_PARENT
2636                 ];
2637
2638                 /*
2639                  * $expire_network_only = save your own wall posts
2640                  * and just expire conversations started by others
2641                  */
2642                 $expire_network_only = DI::pConfig()->get($uid, 'expire', 'network_only', false);
2643
2644                 if ($expire_network_only) {
2645                         $condition[0] .= " AND NOT `wall`";
2646                 }
2647
2648                 if ($network != "") {
2649                         $condition[0] .= " AND `network` = ?";
2650                         $condition[] = $network;
2651                 }
2652
2653                 $condition[0] .= " AND `received` < ?";
2654                 $condition[] = DateTimeFormat::utc('now - ' . $days . ' day');
2655
2656                 $items = Post::select(['resource-id', 'starred', 'id', 'post-type', 'uid', 'uri-id'], $condition);
2657
2658                 if (!DBA::isResult($items)) {
2659                         return;
2660                 }
2661
2662                 $expire_items = (bool)DI::pConfig()->get($uid, 'expire', 'items', true);
2663
2664                 // Forcing expiring of items - but not notes and marked items
2665                 if ($force) {
2666                         $expire_items = true;
2667                 }
2668
2669                 $expire_notes = (bool)DI::pConfig()->get($uid, 'expire', 'notes', true);
2670                 $expire_starred = (bool)DI::pConfig()->get($uid, 'expire', 'starred', true);
2671                 $expire_photos = (bool)DI::pConfig()->get($uid, 'expire', 'photos', false);
2672
2673                 $expired = 0;
2674
2675                 $priority = DI::config()->get('system', 'expire-notify-priority');
2676
2677                 while ($item = Post::fetch($items)) {
2678                         // don't expire filed items
2679                         if (DBA::exists('post-category', ['uri-id' => $item['uri-id'], 'uid' => $item['uid'], 'type' => Post\Category::FILE])) {
2680                                 continue;
2681                         }
2682
2683                         // Only expire posts, not photos and photo comments
2684
2685                         if (!$expire_photos && !empty($item['resource-id'])) {
2686                                 continue;
2687                         } elseif (!$expire_starred && intval($item['starred'])) {
2688                                 continue;
2689                         } elseif (!$expire_notes && ($item['post-type'] == self::PT_PERSONAL_NOTE)) {
2690                                 continue;
2691                         } elseif (!$expire_items && ($item['post-type'] != self::PT_PERSONAL_NOTE)) {
2692                                 continue;
2693                         }
2694
2695                         self::markForDeletionById($item['id'], $priority);
2696
2697                         ++$expired;
2698                 }
2699                 DBA::close($items);
2700                 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]);
2701         }
2702
2703         public static function firstPostDate(int $uid, bool $wall = false)
2704         {
2705                 $user = User::getById($uid, ['register_date']);
2706                 if (empty($user)) {
2707                         return false;
2708                 }
2709
2710                 $condition = [
2711                         "`uid` = ? AND `wall` = ? AND NOT `deleted` AND `visible` AND `received` >= ?",
2712                         $uid, $wall, $user['register_date']
2713                 ];
2714                 $params = ['order' => ['received' => false]];
2715                 $thread = Post::selectFirstThread(['received'], $condition, $params);
2716                 if (DBA::isResult($thread)) {
2717                         $postdate = substr(DateTimeFormat::local($thread['received']), 0, 10);
2718                         return $postdate;
2719                 }
2720                 return false;
2721         }
2722
2723         /**
2724          * add/remove activity to an item
2725          *
2726          * Toggle activities as like,dislike,attend of an item
2727          *
2728          * @param int    $item_id
2729          * @param string $verb
2730          *            Activity verb. One of
2731          *            like, unlike, dislike, undislike, attendyes, unattendyes,
2732          *            attendno, unattendno, attendmaybe, unattendmaybe,
2733          *            announce, unannounce
2734          * @param int    $uid
2735          * @param string $allow_cid
2736          * @param string $allow_gid
2737          * @param string $deny_cid
2738          * @param string $deny_gid
2739          * @return bool
2740          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2741          * @throws \ImagickException
2742          * @hook  'post_local_end'
2743          *            array $arr
2744          *            'post_id' => ID of posted item
2745          */
2746         public static function performActivity(int $item_id, string $verb, int $uid, string $allow_cid = null, string $allow_gid = null, string $deny_cid = null, string $deny_gid = null): bool
2747         {
2748                 if (empty($uid)) {
2749                         return false;
2750                 }
2751
2752                 Logger::notice('Start create activity', ['verb' => $verb, 'item' => $item_id, 'user' => $uid]);
2753
2754                 $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $item_id]);
2755                 if (!DBA::isResult($item)) {
2756                         Logger::warning('Post had not been fetched', ['id' => $item_id]);
2757                         return false;
2758                 }
2759
2760                 $uri_id = $item['uri-id'];
2761
2762                 if (!in_array($item['uid'], [0, $uid])) {
2763                         return false;
2764                 }
2765
2766                 if (!Post::exists(['uri-id' => $item['parent-uri-id'], 'uid' => $uid])) {
2767                         $stored = self::storeForUserByUriId($item['parent-uri-id'], $uid, ['post-reason' => Item::PR_ACTIVITY]);
2768                         if (($item['parent-uri-id'] == $item['uri-id']) && !empty($stored)) {
2769                                 $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $stored]);
2770                                 if (!DBA::isResult($item)) {
2771                                         Logger::info('Could not fetch just created item - should not happen', ['stored' => $stored, 'uid' => $uid, 'uri-id' => $uri_id]);
2772                                         return false;
2773                                 }
2774                         }
2775                 }
2776
2777                 // Retrieves the local post owner
2778                 $owner = User::getOwnerDataById($uid);
2779                 if (empty($owner)) {
2780                         Logger::info('Empty owner for user', ['uid' => $uid]);
2781                         return false;
2782                 }
2783
2784                 // Retrieve the current logged in user's public contact
2785                 $author_id = Contact::getPublicIdByUserId($uid);
2786                 if (empty($author_id)) {
2787                         Logger::info('Empty public contact');
2788                         return false;
2789                 }
2790
2791                 $activity = null;
2792                 switch ($verb) {
2793                         case 'like':
2794                         case 'unlike':
2795                                 $activity = Activity::LIKE;
2796                                 break;
2797                         case 'dislike':
2798                         case 'undislike':
2799                                 $activity = Activity::DISLIKE;
2800                                 break;
2801                         case 'attendyes':
2802                         case 'unattendyes':
2803                                 $activity = Activity::ATTEND;
2804                                 break;
2805                         case 'attendno':
2806                         case 'unattendno':
2807                                 $activity = Activity::ATTENDNO;
2808                                 break;
2809                         case 'attendmaybe':
2810                         case 'unattendmaybe':
2811                                 $activity = Activity::ATTENDMAYBE;
2812                                 break;
2813                         case 'follow':
2814                         case 'unfollow':
2815                                 $activity = Activity::FOLLOW;
2816                                 break;
2817                         case 'announce':
2818                         case 'unannounce':
2819                                 $activity = Activity::ANNOUNCE;
2820                                 break;
2821                         default:
2822                                 Logger::warning('unknown verb', ['verb' => $verb, 'item' => $item_id]);
2823                                 return false;
2824                 }
2825
2826                 $mode = Strings::startsWith($verb, 'un') ? 'delete' : 'create';
2827
2828                 // Enable activity toggling instead of on/off
2829                 $event_verb_flag = $activity === Activity::ATTEND || $activity === Activity::ATTENDNO || $activity === Activity::ATTENDMAYBE;
2830
2831                 // Look for an existing verb row
2832                 // Event participation activities are mutually exclusive, only one of them can exist at all times.
2833                 if ($event_verb_flag) {
2834                         $verbs = [Activity::ATTEND, Activity::ATTENDNO, Activity::ATTENDMAYBE];
2835
2836                         // Translate to the index based activity index
2837                         $vids = [];
2838                         foreach ($verbs as $verb) {
2839                                 $vids[] = Verb::getID($verb);
2840                         }
2841                 } else {
2842                         $vids = Verb::getID($activity);
2843                 }
2844
2845                 $condition = [
2846                         'vid' => $vids, 'deleted' => false, 'gravity' => self::GRAVITY_ACTIVITY,
2847                         'author-id' => $author_id, 'uid' => $uid, 'thr-parent-id' => $uri_id
2848                 ];
2849                 $like_item = Post::selectFirst(['id', 'guid', 'verb'], $condition);
2850
2851                 if (DBA::isResult($like_item)) {
2852                         /**
2853                          * Truth table for existing activities
2854                          *
2855                          * |          Inputs            ||      Outputs      |
2856                          * |----------------------------||-------------------|
2857                          * |  Mode  | Event | Same verb || Delete? | Return? |
2858                          * |--------|-------|-----------||---------|---------|
2859                          * | create |  Yes  |    Yes    ||   No    |   Yes   |
2860                          * | create |  Yes  |    No     ||   Yes   |   No    |
2861                          * | create |  No   |    Yes    ||   No    |   Yes   |
2862                          * | create |  No   |    No     ||        N/A†       |
2863                          * | delete |  Yes  |    Yes    ||   Yes   |   N/A‡  |
2864                          * | delete |  Yes  |    No     ||   No    |   N/A‡  |
2865                          * | delete |  No   |    Yes    ||   Yes   |   N/A‡  |
2866                          * | delete |  No   |    No     ||        N/A†       |
2867                          * |--------|-------|-----------||---------|---------|
2868                          * |   A    |   B   |     C     || A xor C | !B or C |
2869                          *
2870                          * † Can't happen: It's impossible to find an existing non-event activity without
2871                          *                 the same verb because we are only looking for this single verb.
2872                          *
2873                          * ‡ The "mode = delete" is returning early whether an existing activity was found or not.
2874                          */
2875                         if ($mode == 'create' xor $like_item['verb'] == $activity) {
2876                                 self::markForDeletionById($like_item['id']);
2877                         }
2878
2879                         if (!$event_verb_flag || $like_item['verb'] == $activity) {
2880                                 return true;
2881                         }
2882                 }
2883
2884                 // No need to go further if we aren't creating anything
2885                 if ($mode == 'delete') {
2886                         return true;
2887                 }
2888
2889                 $objtype = $item['resource-id'] ? Activity\ObjectType::IMAGE : Activity\ObjectType::NOTE;
2890
2891                 $new_item = [
2892                         'guid'          => System::createUUID(),
2893                         'uri'           => self::newURI(),
2894                         'uid'           => $uid,
2895                         'contact-id'    => $owner['id'],
2896                         'wall'          => $item['wall'],
2897                         'origin'        => 1,
2898                         'network'       => Protocol::DFRN,
2899                         'protocol'      => Conversation::PARCEL_DIRECT,
2900                         'direction'     => Conversation::PUSH,
2901                         'gravity'       => self::GRAVITY_ACTIVITY,
2902                         'parent'        => $item['id'],
2903                         'thr-parent'    => $item['uri'],
2904                         'owner-id'      => $author_id,
2905                         'author-id'     => $author_id,
2906                         'body'          => $activity,
2907                         'verb'          => $activity,
2908                         'object-type'   => $objtype,
2909                         'allow_cid'     => $allow_cid ?? $item['allow_cid'],
2910                         'allow_gid'     => $allow_gid ?? $item['allow_gid'],
2911                         'deny_cid'      => $deny_cid ?? $item['deny_cid'],
2912                         'deny_gid'      => $deny_gid ?? $item['deny_gid'],
2913                         'visible'       => 1,
2914                         'unseen'        => 1,
2915                 ];
2916
2917                 if (in_array($activity, [Activity::LIKE, Activity::DISLIKE])) {
2918                         $signed = Diaspora::createLikeSignature($uid, $new_item);
2919                         if (!empty($signed)) {
2920                                 $new_item['diaspora_signed_text'] = json_encode($signed);
2921                         }
2922                 }
2923
2924                 self::insert($new_item, true);
2925
2926                 // If the parent item isn't visible then set it to visible
2927                 // @todo Check if this is still needed
2928                 if (!$item['visible']) {
2929                         self::update(['visible' => true], ['id' => $item['id']]);
2930                 }
2931                 return true;
2932         }
2933
2934         /**
2935          * Fetch the SQL condition for the given user id
2936          *
2937          * @param integer $owner_id User ID for which the permissions should be fetched
2938          * @return array condition
2939          */
2940         public static function getPermissionsConditionArrayByUserId(int $owner_id): array
2941         {
2942                 $local_user = DI::userSession()->getLocalUserId();
2943                 $remote_user = DI::userSession()->getRemoteContactID($owner_id);
2944
2945                 // default permissions - anonymous user
2946                 $condition = ["`private` != ?", self::PRIVATE];
2947
2948                 if ($local_user && ($local_user == $owner_id)) {
2949                         // Profile owner - everything is visible
2950                         $condition = [];
2951                 } elseif ($remote_user) {
2952                         // Authenticated visitor - fetch the matching permissionsets
2953                         $permissionSets = DI::permissionSet()->selectByContactId($remote_user, $owner_id);
2954                         if (!empty($set)) {
2955                                 $condition = [
2956                                         "(`private` != ? OR (`private` = ? AND `wall`
2957                                         AND `psid` IN (" . implode(', ', array_fill(0, count($set), '?')) . ")))",
2958                                         self::PRIVATE, self::PRIVATE
2959                                 ];
2960                                 $condition = array_merge($condition, $permissionSets->column('id'));
2961                         }
2962                 }
2963
2964                 return $condition;
2965         }
2966
2967         /**
2968          * Get a permission SQL string for the given user
2969          *
2970          * @param int $owner_id
2971          * @param string $table
2972          * @return string
2973          */
2974         public static function getPermissionsSQLByUserId(int $owner_id, string $table = ''): string
2975         {
2976                 $local_user = DI::userSession()->getLocalUserId();
2977                 $remote_user = DI::userSession()->getRemoteContactID($owner_id);
2978
2979                 if (!empty($table)) {
2980                         $table = DBA::quoteIdentifier($table) . '.';
2981                 }
2982
2983                 /*
2984                  * Construct permissions
2985                  *
2986                  * default permissions - anonymous user
2987                  */
2988                 $sql = sprintf(" AND " . $table . "`private` != %d", self::PRIVATE);
2989
2990                 // Profile owner - everything is visible
2991                 if ($local_user && ($local_user == $owner_id)) {
2992                         $sql = '';
2993                 } elseif ($remote_user) {
2994                         /*
2995                          * Authenticated visitor. Unless pre-verified,
2996                          * check that the contact belongs to this $owner_id
2997                          * and load the circles the visitor belongs to.
2998                          * If pre-verified, the caller is expected to have already
2999                          * done this and passed the circles into this function.
3000                          */
3001                         $permissionSets = DI::permissionSet()->selectByContactId($remote_user, $owner_id);
3002
3003                         if (!empty($set)) {
3004                                 $sql_set = sprintf(" OR (" . $table . "`private` = %d AND " . $table . "`wall` AND " . $table . "`psid` IN (", self::PRIVATE) . implode(',', $permissionSets->column('id')) . "))";
3005                         } else {
3006                                 $sql_set = '';
3007                         }
3008
3009                         $sql = sprintf(" AND (" . $table . "`private` != %d", self::PRIVATE) . $sql_set . ")";
3010                 }
3011
3012                 return $sql;
3013         }
3014
3015         /**
3016          * get translated item type
3017          *
3018          * @param array                $item
3019          * @param \Friendica\Core\L10n $l10n
3020          * @return string
3021          */
3022         public static function postType(array $item, \Friendica\Core\L10n $l10n): string
3023         {
3024                 if (!empty($item['event-id'])) {
3025                         return $l10n->t('event');
3026                 } elseif (!empty($item['resource-id'])) {
3027                         return $l10n->t('photo');
3028                 } elseif ($item['gravity'] == self::GRAVITY_ACTIVITY) {
3029                         return $l10n->t('activity');
3030                 } elseif ($item['gravity'] == self::GRAVITY_COMMENT) {
3031                         return $l10n->t('comment');
3032                 }
3033
3034                 return $l10n->t('post');
3035         }
3036
3037         /**
3038          * Sets the "rendered-html" field of the provided item
3039          *
3040          * Body is preserved to avoid side-effects as we modify it just-in-time for spoilers and private image links
3041          *
3042          * @param array $item
3043          *
3044          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3045          * @todo Remove reference, simply return "rendered-html" and "rendered-hash"
3046          */
3047         private static function putInCache(&$item)
3048         {
3049                 // Save original body to prevent addons to modify it
3050                 $body = $item['body'];
3051
3052                 $rendered_hash = $item['rendered-hash'] ?? '';
3053                 $rendered_html = $item['rendered-html'] ?? '';
3054
3055                 if (
3056                         $rendered_hash == ''
3057                         || $rendered_html == ''
3058                         || $rendered_hash != hash('md5', BBCode::VERSION . '::' . $body)
3059                         || DI::config()->get('system', 'ignore_cache')
3060                 ) {
3061                         $item['rendered-html'] = BBCode::convertForUriId($item['uri-id'], $item['body']);
3062                         $item['rendered-hash'] = hash('md5', BBCode::VERSION . '::' . $body);
3063
3064                         $hook_data = ['item' => $item, 'rendered-html' => $item['rendered-html'], 'rendered-hash' => $item['rendered-hash']];
3065                         Hook::callAll('put_item_in_cache', $hook_data);
3066                         $item['rendered-html'] = $hook_data['rendered-html'];
3067                         $item['rendered-hash'] = $hook_data['rendered-hash'];
3068                         unset($hook_data);
3069
3070                         // Update if the generated values differ from the existing ones
3071                         if ((($rendered_hash != $item['rendered-hash']) || ($rendered_html != $item['rendered-html'])) && !empty($item['id'])) {
3072                                 self::update(
3073                                         [
3074                                                 'rendered-html' => $item['rendered-html'],
3075                                                 'rendered-hash' => $item['rendered-hash']
3076                                         ],
3077                                         ['id' => $item['id']]
3078                                 );
3079                         }
3080                 }
3081
3082                 $item['body'] = $body;
3083         }
3084
3085         /**
3086          * Given an item array, convert the body element from bbcode to html and add smilie icons.
3087          * If attach is true, also add icons for item attachments.
3088          *
3089          * @param array   $item Record from item table
3090          * @param boolean $attach If true, add icons for item attachments as well
3091          * @param boolean $is_preview Whether this is a preview
3092          * @param boolean $only_cache Whether only cached HTML should be updated
3093          * @return string item body html
3094          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3095          * @throws \ImagickException
3096          * @hook  prepare_body_init item array before any work
3097          * @hook  prepare_body_content_filter ('item'=>item array, 'filter_reasons'=>string array) before first bbcode to html
3098          * @hook  prepare_body ('item'=>item array, 'html'=>body string, 'is_preview'=>boolean, 'filter_reasons'=>string array) after first bbcode to html
3099          * @hook  prepare_body_final ('item'=>item array, 'html'=>body string) after attach icons and blockquote special case handling (spoiler, author)
3100          */
3101         public static function prepareBody(array &$item, bool $attach = false, bool $is_preview = false, bool $only_cache = false): string
3102         {
3103                 $a = DI::app();
3104                 Hook::callAll('prepare_body_init', $item);
3105
3106
3107                 // In order to provide theme developers more possibilities, event items
3108                 // are treated differently.
3109                 if ($item['object-type'] === Activity\ObjectType::EVENT && isset($item['event-id'])) {
3110                         $ev = Event::getItemHTML($item);
3111                         return $ev;
3112                 }
3113
3114                 $tags = Tag::populateFromItem($item);
3115
3116                 $item['tags'] = $tags['tags'];
3117                 $item['hashtags'] = $tags['hashtags'];
3118                 $item['mentions'] = $tags['mentions'];
3119
3120                 if (!$is_preview) {
3121                         $item['body'] = preg_replace("#\s*\[attachment .*?].*?\[/attachment]\s*#ism", "\n", $item['body']);
3122                         $item['body'] = Post\Media::removeFromEndOfBody($item['body'] ?? '');
3123                         $item['body'] = Post\Media::replaceImage($item['body']);
3124                 }
3125
3126                 $body = $item['body'];
3127                 if ($is_preview) {
3128                         $item['body'] = preg_replace("#\s*\[attachment .*?].*?\[/attachment]\s*#ism", "\n", $item['body']);
3129                 }
3130
3131                 $fields = ['uri-id', 'uri', 'body', 'title', 'author-name', 'author-link', 'author-avatar', 'guid', 'created', 'plink', 'network', 'has-media', 'quote-uri-id', 'post-type'];
3132
3133                 $shared_uri_id      = 0;
3134                 $shared_links       = [];
3135                 $quote_shared_links = [];
3136
3137                 $shared = DI::contentItem()->getSharedPost($item, $fields);
3138                 if (!empty($shared['post'])) {
3139                         $shared_item  = $shared['post'];
3140                         $shared_item['body'] = Post\Media::removeFromEndOfBody($shared_item['body']);
3141                         $shared_item['body'] = Post\Media::replaceImage($shared_item['body']);
3142                         $quote_uri_id = $shared['post']['uri-id'];
3143                         $shared_links[] = strtolower($shared['post']['uri']);
3144                         $item['body'] = BBCode::removeSharedData($item['body']);
3145                 } elseif (empty($shared_item['uri-id']) && empty($item['quote-uri-id']) && ($item['network'] != Protocol::DIASPORA)) {
3146                         $media = Post\Media::getByURIId($item['uri-id'], [Post\Media::ACTIVITY]);
3147                         if (!empty($media) && ($media[0]['media-uri-id'] != $item['uri-id'])) {
3148                                 $shared_item = Post::selectFirst($fields, ['uri-id' => $media[0]['media-uri-id'], 'uid' => [$item['uid'], 0]]);
3149                                 if (empty($shared_item['uri-id'])) {
3150                                         $shared_item = Post::selectFirst($fields, ['plink' => $media[0]['url'], 'uid' => [$item['uid'], 0]]);
3151                                 } elseif (!in_array(strtolower($media[0]['url']), $shared_links)) {
3152                                         $shared_links[] = strtolower($media[0]['url']);
3153                                 }
3154
3155                                 if (empty($shared_item['uri-id'])) {
3156                                         $shared_item = Post::selectFirst($fields, ['uri' => $media[0]['url'], 'uid' => [$item['uid'], 0]]);
3157                                         $shared_links[] = strtolower($media[0]['url']);
3158                                 }
3159
3160                                 if (!empty($shared_item['uri-id'])) {
3161                                         $data = BBCode::getAttachmentData($shared_item['body']);
3162                                         if (!empty($data['url'])) {
3163                                                 $quote_shared_links[] = $data['url'];
3164                                         }
3165
3166                                         $quote_uri_id = $shared_item['uri-id'];
3167                                 }
3168                         }
3169                 }
3170
3171                 if (!empty($quote_uri_id)) {
3172                         if (isset($shared_item['plink'])) {
3173                                 $item['body'] .= "\n" . DI::contentItem()->createSharedBlockByArray($shared_item, false, true);
3174                         } else {
3175                                 DI::logger()->warning('Missing plink in shared item', ['item' => $item, 'shared' => $shared, 'quote_uri_id' => $quote_uri_id, 'shared_item' => $shared_item]);
3176                         }
3177                 }
3178
3179                 if (!empty($shared_item['uri-id'])) {
3180                         $shared_uri_id = $shared_item['uri-id'];
3181                         $shared_links[] = strtolower($shared_item['plink']);
3182                         $sharedSplitAttachments = DI::postMediaRepository()->splitAttachments($shared_uri_id, [], $shared_item['has-media']);
3183                         $shared_links = array_merge($shared_links, $sharedSplitAttachments['visual']->column('url'));
3184                         $shared_links = array_merge($shared_links, $sharedSplitAttachments['link']->column('url'));
3185                         $shared_links = array_merge($shared_links, $sharedSplitAttachments['additional']->column('url'));
3186                         $item['body'] = self::replaceVisualAttachments($sharedSplitAttachments['visual'], $item['body']);
3187                 }
3188
3189                 $itemSplitAttachments = DI::postMediaRepository()->splitAttachments($item['uri-id'], $shared_links, $item['has-media'] ?? false);
3190                 $item['body'] = self::replaceVisualAttachments($itemSplitAttachments['visual'], $item['body'] ?? '');
3191
3192                 self::putInCache($item);
3193                 $item['body'] = $body;
3194                 $s = $item["rendered-html"];
3195
3196                 if ($only_cache) {
3197                         return '';
3198                 }
3199
3200                 // Compile eventual content filter reasons
3201                 $filter_reasons = [];
3202                 if (!$is_preview && DI::userSession()->getPublicContactId() != $item['author-id']) {
3203                         if (!empty($item['user-blocked-author']) || !empty($item['user-blocked-owner'])) {
3204                                 $filter_reasons[] = DI::l10n()->t('%s is blocked', $item['author-name']);
3205                         } elseif (!empty($item['user-ignored-author']) || !empty($item['user-ignored-owner'])) {
3206                                 $filter_reasons[] = DI::l10n()->t('%s is ignored', $item['author-name']);
3207                         } elseif (!empty($item['user-collapsed-author']) || !empty($item['user-collapsed-owner'])) {
3208                                 $filter_reasons[] = DI::l10n()->t('Content from %s is collapsed', $item['author-name']);
3209                         }
3210
3211                         if (!empty($item['content-warning']) && (!DI::userSession()->getLocalUserId() || !DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'system', 'disable_cw', false))) {
3212                                 $filter_reasons[] = DI::l10n()->t('Content warning: %s', $item['content-warning']);
3213                         }
3214
3215                         $item['attachments'] = $itemSplitAttachments;
3216
3217                         $hook_data = [
3218                                 'item' => $item,
3219                                 'filter_reasons' => $filter_reasons
3220                         ];
3221                         Hook::callAll('prepare_body_content_filter', $hook_data);
3222                         $filter_reasons = $hook_data['filter_reasons'];
3223                         unset($hook_data);
3224                 }
3225
3226                 $hook_data = [
3227                         'item' => $item,
3228                         'html' => $s,
3229                         'preview' => $is_preview,
3230                         'filter_reasons' => $filter_reasons
3231                 ];
3232                 Hook::callAll('prepare_body', $hook_data);
3233                 $s = $hook_data['html'];
3234
3235                 unset($hook_data);
3236
3237                 if (!$attach) {
3238                         // Replace the blockquotes with quotes that are used in mails.
3239                         $mailquote = '<blockquote type="cite" class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">';
3240                         $s = str_replace(['<blockquote>', '<blockquote class="spoiler">', '<blockquote class="author">'], [$mailquote, $mailquote, $mailquote], $s);
3241                         return $s;
3242                 }
3243
3244                 if (!empty($sharedSplitAttachments)) {
3245                         $s = self::addGallery($s, $sharedSplitAttachments['visual']);
3246                         $s = self::addVisualAttachments($sharedSplitAttachments['visual'], $shared_item, $s, true);
3247                         $s = self::addLinkAttachment($shared_uri_id ?: $item['uri-id'], $sharedSplitAttachments, $body, $s, true, $quote_shared_links);
3248                         $s = self::addNonVisualAttachments($sharedSplitAttachments['additional'], $item, $s, true);
3249                         $body = BBCode::removeSharedData($body);
3250                 }
3251
3252                 $pos = strpos($s, BBCode::SHARED_ANCHOR);
3253                 if ($pos) {
3254                         $shared_html = substr($s, $pos + strlen(BBCode::SHARED_ANCHOR));
3255                         $s = substr($s, 0, $pos);
3256                 }
3257
3258                 $s = self::addGallery($s, $itemSplitAttachments['visual']);
3259                 $s = self::addVisualAttachments($itemSplitAttachments['visual'], $item, $s, false);
3260                 $s = self::addLinkAttachment($item['uri-id'], $itemSplitAttachments, $body, $s, false, $shared_links);
3261                 $s = self::addNonVisualAttachments($itemSplitAttachments['additional'], $item, $s, false);
3262                 $s = self::addQuestions($item, $s);
3263
3264                 // Map.
3265                 if (strpos($s, '<div class="map">') !== false && !empty($item['coord'])) {
3266                         $x = Map::byCoordinates(trim($item['coord']));
3267                         if ($x) {
3268                                 $s = preg_replace('/\<div class\=\"map\"\>/', '$0' . $x, $s);
3269                         }
3270                 }
3271
3272                 // Replace friendica image url size with theme preference.
3273                 if (!empty($a->getThemeInfoValue('item_image_size'))) {
3274                         $ps = $a->getThemeInfoValue('item_image_size');
3275                         $s = preg_replace('|(<img[^>]+src="[^"]+/photo/[0-9a-f]+)-[0-9]|', "$1-" . $ps, $s);
3276                 }
3277
3278                 if (!empty($shared_html)) {
3279                         $s .= $shared_html;
3280                 }
3281
3282                 $s = HTML::applyContentFilter($s, $filter_reasons);
3283
3284                 $hook_data = ['item' => $item, 'html' => $s];
3285                 Hook::callAll('prepare_body_final', $hook_data);
3286                 return $hook_data['html'];
3287         }
3288
3289         /**
3290          * Modify links to pictures to links for the "Fancybox" gallery
3291          *
3292          * @param string     $s
3293          * @param PostMedias $PostMedias
3294          * @return string
3295          */
3296         private static function addGallery(string $s, PostMedias $PostMedias): string
3297         {
3298                 foreach ($PostMedias as $PostMedia) {
3299                         if (!$PostMedia->preview || ($PostMedia->type !== Post\Media::IMAGE)) {
3300                                 continue;
3301                         }
3302
3303                         if ($PostMedia->hasDimensions()) {
3304                                 $pattern = '#<a href="' . preg_quote($PostMedia->url) . '">(.*?)"></a>#';
3305
3306                                 $s = preg_replace_callback($pattern, function () use ($PostMedia) {
3307                                         return Renderer::replaceMacros(Renderer::getMarkupTemplate('content/image/single_with_height_allocation.tpl'), [
3308                                                 '$image' => $PostMedia,
3309                                                 '$allocated_height' => $PostMedia->getAllocatedHeight(),
3310                                         ]);
3311                                 }, $s);
3312                         } else {
3313                                 $s = str_replace('<a href="' . $PostMedia->url . '"', '<a data-fancybox="uri-id-' . $PostMedia->uriId . '" href="' . $PostMedia->url . '"', $s);
3314                         }
3315                 }
3316
3317                 return $s;
3318         }
3319
3320         /**
3321          * Check if the body contains a link
3322          *
3323          * @param string $body
3324          * @param string $url
3325          * @param int    $type
3326          * @return bool
3327          */
3328         public static function containsLink(string $body, string $url, int $type = 0): bool
3329         {
3330                 // Make sure that for example site parameters aren't used when testing if the link is contained in the body
3331                 $urlparts = parse_url($url);
3332                 if (empty($urlparts)) {
3333                         return false;
3334                 }
3335
3336                 unset($urlparts['query']);
3337                 unset($urlparts['fragment']);
3338
3339                 try {
3340                         $url = (string)Uri::fromParts($urlparts);
3341                 } catch (\InvalidArgumentException $e) {
3342                         DI::logger()->notice('Invalid URL', ['$url' => $url, '$urlparts' => $urlparts]);
3343                         /* See https://github.com/friendica/friendica/issues/12113
3344                          * Malformed URLs will result in a Fatal Error
3345                          */
3346                         return false;
3347                 }
3348
3349                 // Remove media links to only search in embedded content
3350                 // @todo Check images for image link, audio for audio links, ...
3351                 if (in_array($type, [Post\Media::AUDIO, Post\Media::VIDEO, Post\Media::IMAGE])) {
3352                         $body = preg_replace("/\[url=[^\[\]]*\](.*)\[\/url\]/Usi", ' $1 ', $body);
3353                 }
3354
3355                 if (strpos($body, $url)) {
3356                         return true;
3357                 }
3358
3359                 foreach ([0, 1, 2] as $size) {
3360                         if (
3361                                 preg_match('#/photo/.*-' . $size . '\.#ism', $url) &&
3362                                 strpos(preg_replace('#(/photo/.*)-[012]\.#ism', '$1-' . $size . '.', $body), $url)
3363                         ) {
3364                                 return true;
3365                         }
3366                 }
3367
3368                 return false;
3369         }
3370
3371         /**
3372          * Replace visual attachments in the body
3373          *
3374          * @param PostMedias $PostMedias
3375          * @param string     $body
3376          * @return string modified body
3377          */
3378         private static function replaceVisualAttachments(PostMedias $PostMedias, string $body): string
3379         {
3380                 DI::profiler()->startRecording('rendering');
3381
3382                 foreach ($PostMedias as $PostMedia) {
3383                         if ($PostMedia->preview) {
3384                                 if (DI::baseUrl()->isLocalUri($PostMedia->preview)) {
3385                                         continue;
3386                                 }
3387                                 $proxy   = DI::baseUrl() . $PostMedia->getPreviewPath(Proxy::SIZE_LARGE);
3388                                 $search  = ['[img=' . $PostMedia->preview . ']', ']' . $PostMedia->preview . '[/img]'];
3389                                 $replace = ['[img=' . $proxy . ']', ']' . $proxy . '[/img]'];
3390
3391                                 $body = str_replace($search, $replace, $body);
3392                         } elseif ($PostMedia->mimetype->type == 'image') {
3393                                 if (DI::baseUrl()->isLocalUri($PostMedia->url)) {
3394                                         continue;
3395                                 }
3396                                 $proxy   = DI::baseUrl() . $PostMedia->getPreviewPath(Proxy::SIZE_LARGE);
3397                                 $search  = ['[img=' . $PostMedia->url . ']', ']' . $PostMedia->url . '[/img]'];
3398                                 $replace = ['[img=' . $proxy . ']', ']' . $proxy . '[/img]'];
3399
3400                                 $body = str_replace($search, $replace, $body);
3401                         }
3402                 }
3403                 DI::profiler()->stopRecording();
3404                 return $body;
3405         }
3406
3407         /**
3408          * Add visual attachments to the content
3409          *
3410          * @param PostMedias $PostMedias
3411          * @param array      $item
3412          * @param string     $content
3413          * @param bool       $shared
3414          * @return string modified content
3415          * @throws ServiceUnavailableException
3416          */
3417         private static function addVisualAttachments(PostMedias $PostMedias, array $item, string $content, bool $shared): string
3418         {
3419                 DI::profiler()->startRecording('rendering');
3420                 $leading  = '';
3421                 $trailing = '';
3422                 $images   = new PostMedias();
3423
3424                 // @todo In the future we should make a single for the template engine with all media in it. This allows more flexibilty.
3425                 foreach ($PostMedias as $PostMedia) {
3426                         if (self::containsLink($item['body'], $PostMedia->preview ?? $PostMedia->url, $PostMedia->type)) {
3427                                 continue;
3428                         }
3429
3430                         if ($PostMedia->mimetype->type == 'image') {
3431                                 $preview_size = $PostMedia->width > $PostMedia->height ? Proxy::SIZE_MEDIUM : Proxy::SIZE_LARGE;
3432                                 $preview_url = DI::baseUrl() . $PostMedia->getPreviewPath($preview_size);
3433                         } elseif ($PostMedia->preview) {
3434                                 $preview_size = Proxy::SIZE_LARGE;
3435                                 $preview_url = DI::baseUrl() . $PostMedia->getPreviewPath($preview_size);
3436                         } else {
3437                                 $preview_size = 0;
3438                                 $preview_url = '';
3439                         }
3440
3441                         if ($preview_url && self::containsLink($item['body'], $preview_url)) {
3442                                 continue;
3443                         }
3444
3445                         if ($PostMedia->mimetype->type == 'video') {
3446                                 /// @todo Move the template to /content as well
3447                                 $media = Renderer::replaceMacros(Renderer::getMarkupTemplate('video_top.tpl'), [
3448                                         '$video' => [
3449                                                 'id'      => $PostMedia->id,
3450                                                 'src'     => (string)$PostMedia->url,
3451                                                 'name'    => $PostMedia->name ?: $PostMedia->url,
3452                                                 'preview' => $preview_url,
3453                                                 'mime'    => (string)$PostMedia->mimetype,
3454                                         ],
3455                                 ]);
3456                                 if (($item['post-type'] ?? null) == Item::PT_VIDEO) {
3457                                         $leading .= $media;
3458                                 } else {
3459                                         $trailing .= $media;
3460                                 }
3461                         } elseif ($PostMedia->mimetype->type == 'audio') {
3462                                 $media = Renderer::replaceMacros(Renderer::getMarkupTemplate('content/audio.tpl'), [
3463                                         '$audio' => [
3464                                                 'id'     => $PostMedia->id,
3465                                                 'src'    => (string)$PostMedia->url,
3466                                                 'name'   => $PostMedia->name ?: $PostMedia->url,
3467                                                 'mime'   => (string)$PostMedia->mimetype,
3468                                         ],
3469                                 ]);
3470                                 if (($item['post-type'] ?? null) == Item::PT_AUDIO) {
3471                                         $leading .= $media;
3472                                 } else {
3473                                         $trailing .= $media;
3474                                 }
3475                         } elseif ($PostMedia->mimetype->type == 'image') {
3476                                 $src_url = DI::baseUrl() . $PostMedia->getPhotoPath();
3477                                 if (self::containsLink($item['body'], $src_url)) {
3478                                         continue;
3479                                 }
3480
3481                                 $images[] = $PostMedia->withUrl(new Uri($src_url))->withPreview(new Uri($preview_url), $preview_size);
3482                         }
3483                 }
3484
3485                 $media = Image::getBodyAttachHtml($images);
3486
3487                 // On Diaspora posts the attached pictures are leading
3488                 if ($item['network'] == Protocol::DIASPORA) {
3489                         $leading .= $media;
3490                 } else {
3491                         $trailing .= $media;
3492                 }
3493
3494                 if ($shared) {
3495                         $content = str_replace(BBCode::TOP_ANCHOR, '<div class="body-attach">' . $leading . '</div>' . BBCode::TOP_ANCHOR, $content);
3496                         $content = str_replace(BBCode::BOTTOM_ANCHOR, '<div class="body-attach">' . $trailing . '</div>' . BBCode::BOTTOM_ANCHOR, $content);
3497                 } else {
3498                         if ($leading != '') {
3499                                 $content = '<div class="body-attach">' . $leading . '</div>' . $content;
3500                         }
3501
3502                         if ($trailing != '') {
3503                                 $content .= '<div class="body-attach">' . $trailing . '</div>';
3504                         }
3505                 }
3506
3507                 DI::profiler()->stopRecording();
3508                 return $content;
3509         }
3510
3511         /**
3512          * Add link attachment to the content
3513          *
3514          * @param int          $uriid
3515          * @param PostMedias[] $attachments
3516          * @param string       $body
3517          * @param string       $content
3518          * @param bool         $shared
3519          * @param array        $ignore_links A list of URLs to ignore
3520          * @return string modified content
3521          * @throws InternalServerErrorException
3522          * @throws ServiceUnavailableException
3523          */
3524         private static function addLinkAttachment(int $uriid, array $attachments, string $body, string $content, bool $shared, array $ignore_links): string
3525         {
3526                 DI::profiler()->startRecording('rendering');
3527                 // Don't show a preview when there is a visual attachment (audio or video)
3528                 $types = $attachments['visual']->column('type');
3529                 $preview = !in_array(PostMedia::TYPE_IMAGE, $types) && !in_array(PostMedia::TYPE_VIDEO, $types);
3530
3531                 /** @var ?PostMedia $attachment */
3532                 $attachment = null;
3533                 foreach ($attachments['link'] as $PostMedia) {
3534                         $found = false;
3535                         foreach ($ignore_links as $ignore_link) {
3536                                 if (Strings::compareLink($PostMedia->url, $ignore_link)) {
3537                                         $found = true;
3538                                 }
3539                         }
3540                         // @todo Judge between the links to use the one with most information
3541                         if (!$found && (empty($attachment) || $PostMedia->authorName ||
3542                                 (!$attachment->name && $PostMedia->name) ||
3543                                 (!$attachment->description && $PostMedia->description) ||
3544                                 (!$attachment->preview && $PostMedia->preview))) {
3545                                 $attachment = $PostMedia;
3546                         }
3547                 }
3548
3549                 if (!empty($attachment)) {
3550                         $data = [
3551                                 'after' => '',
3552                                 'author_name' => $attachment->authorName ?? '',
3553                                 'author_url' => (string)($attachment->authorUrl ?? ''),
3554                                 'description' => $attachment->description ?? '',
3555                                 'image' => '',
3556                                 'preview' => '',
3557                                 'provider_name' => $attachment->publisherName ?? '',
3558                                 'provider_url' => (string)($attachment->publisherUrl ?? ''),
3559                                 'text' => '',
3560                                 'title' => $attachment->name ?? '',
3561                                 'type' => 'link',
3562                                 'url' => (string)$attachment->url,
3563                         ];
3564
3565                         if ($preview && $attachment->preview) {
3566                                 if ($attachment->previewWidth >= 500) {
3567                                         $data['image'] = DI::baseUrl() . $attachment->getPreviewPath(Proxy::SIZE_MEDIUM);
3568                                 } else {
3569                                         $data['preview'] = DI::baseUrl() . $attachment->getPreviewPath(Proxy::SIZE_MEDIUM);
3570                                 }
3571                         }
3572
3573                         if (!empty($data['description']) && !empty($content)) {
3574                                 similar_text($data['description'], $content, $percent);
3575                         } else {
3576                                 $percent = 0;
3577                         }
3578
3579                         if (!empty($data['description']) && (($data['title'] == $data['description']) || ($percent > 95) || (strpos($content, $data['description']) !== false))) {
3580                                 $data['description'] = '';
3581                         }
3582
3583                         if (($data['author_name'] ?? '') == ($data['provider_name'] ?? '')) {
3584                                 $data['author_name'] = '';
3585                         }
3586
3587                         if (($data['author_url'] ?? '') == ($data['provider_url'] ?? '')) {
3588                                 $data['author_url'] = '';
3589                         }
3590                 } elseif (preg_match("/.*(\[attachment.*?\].*?\[\/attachment\]).*/ism", $body, $match)) {
3591                         $data = BBCode::getAttachmentData($match[1]);
3592                 }
3593                 DI::profiler()->stopRecording();
3594
3595                 if (isset($data['url']) && !in_array(strtolower($data['url']), $ignore_links)) {
3596                         if (!empty($data['description']) || !empty($data['image']) || !empty($data['preview']) || (!empty($data['title']) && !Strings::compareLink($data['title'], $data['url']))) {
3597                                 $parts = parse_url($data['url']);
3598                                 if (!empty($parts['scheme']) && !empty($parts['host'])) {
3599                                         if (empty($data['provider_name'])) {
3600                                                 $data['provider_name'] = $parts['host'];
3601                                         }
3602                                         if (empty($data['provider_url']) || empty(parse_url($data['provider_url'], PHP_URL_SCHEME))) {
3603                                                 $data['provider_url'] = $parts['scheme'] . '://' . $parts['host'];
3604
3605                                                 if (!empty($parts['port'])) {
3606                                                         $data['provider_url'] .= ':' . $parts['port'];
3607                                                 }
3608                                         }
3609                                 }
3610
3611                                 // @todo Use a template
3612                                 $preview_mode = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'system', 'preview_mode', BBCode::PREVIEW_LARGE);
3613                                 if ($preview_mode != BBCode::PREVIEW_NONE) {
3614                                         $rendered = BBCode::convertAttachment('', BBCode::INTERNAL, false, $data, $uriid, $preview_mode);
3615                                 } else {
3616                                         $rendered = '';
3617                                 }
3618                         } elseif (!self::containsLink($content, $data['url'], Post\Media::HTML)) {
3619                                 $rendered = Renderer::replaceMacros(Renderer::getMarkupTemplate('content/link.tpl'), [
3620                                         '$url'   => $data['url'],
3621                                         '$title' => $data['title'],
3622                                 ]);
3623                         } else {
3624                                 return $content;
3625                         }
3626
3627                         if ($shared) {
3628                                 return str_replace(BBCode::BOTTOM_ANCHOR, BBCode::BOTTOM_ANCHOR . $rendered, $content);
3629                         } else {
3630                                 return $content . $rendered;
3631                         }
3632                 }
3633                 return $content;
3634         }
3635
3636         /**
3637          * Add non-visual attachments to the content
3638          *
3639          * @param PostMedias $PostMedias
3640          * @param array      $item
3641          * @param string     $content
3642          * @return string modified content
3643          * @throws InternalServerErrorException
3644          * @throws \ImagickException
3645          */
3646         private static function addNonVisualAttachments(PostMedias $PostMedias, array $item, string $content): string
3647         {
3648                 DI::profiler()->startRecording('rendering');
3649                 $trailing = '';
3650                 foreach ($PostMedias as $PostMedia) {
3651                         if (strpos($item['body'], $PostMedia->url)) {
3652                                 continue;
3653                         }
3654
3655                         $author = [
3656                                 'uid'     => 0,
3657                                 'id'      => $item['author-id'],
3658                                 'network' => $item['author-network'],
3659                                 'url'     => $item['author-link'],
3660                                 'alias'   => $item['author-alias']
3661                         ];
3662                         $the_url = Contact::magicLinkByContact($author, $PostMedia->url);
3663
3664                         $title = Strings::escapeHtml(trim($PostMedia->description ?? '' ?: $PostMedia->url));
3665
3666                         if ($PostMedia->size) {
3667                                 $title .= ' ' . $PostMedia->size . ' ' . DI::l10n()->t('bytes');
3668                         }
3669
3670                         /// @todo Use a template
3671                         $icon = '<div class="attachtype icon s22 type-' . $PostMedia->mimetype->type . ' subtype-' . $PostMedia->mimetype->subtype . '"></div>';
3672                         $trailing .= '<a href="' . strip_tags($the_url) . '" title="' . $title . '" class="attachlink" target="_blank" rel="noopener noreferrer" >' . $icon . '</a>';
3673                 }
3674
3675                 if ($trailing != '') {
3676                         $content .= '<div class="body-attach">' . $trailing . '</div>';
3677                 }
3678
3679                 DI::profiler()->stopRecording();
3680                 return $content;
3681         }
3682
3683         private static function addQuestions(array $item, string $content): string
3684         {
3685                 DI::profiler()->startRecording('rendering');
3686                 if (!empty($item['question-id'])) {
3687                         $question = [
3688                                 'id'       => $item['question-id'],
3689                                 'multiple' => $item['question-multiple'],
3690                                 'voters'   => $item['question-voters'],
3691                                 'endtime'  => $item['question-end-time']
3692                         ];
3693
3694                         $options = Post\QuestionOption::getByURIId($item['uri-id']);
3695                         foreach ($options as $key => $option) {
3696                                 if ($question['voters'] > 0) {
3697                                         $percent = $option['replies'] / $question['voters'] * 100;
3698                                         $options[$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));
3699                                 } else {
3700                                         $options[$key]['vote'] = DI::l10n()->tt('%2$s (%1$d vote)', '%2$s (%1$d votes)', $option['replies'], $option['name']);
3701                                 }
3702                         }
3703
3704                         if (!empty($question['voters']) && !empty($question['endtime'])) {
3705                                 $summary = DI::l10n()->tt('%d voter. Poll end: %s', '%d voters. Poll end: %s', $question['voters'], Temporal::getRelativeDate($question['endtime']));
3706                         } elseif (!empty($question['voters'])) {
3707                                 $summary = DI::l10n()->tt('%d voter.', '%d voters.', $question['voters']);
3708                         } elseif (!empty($question['endtime'])) {
3709                                 $summary = DI::l10n()->t('Poll end: %s', Temporal::getRelativeDate($question['endtime']));
3710                         } else {
3711                                 $summary = '';
3712                         }
3713
3714                         $content .= Renderer::replaceMacros(Renderer::getMarkupTemplate('content/question.tpl'), [
3715                                 '$question' => $question,
3716                                 '$options'  => $options,
3717                                 '$summary'  => $summary,
3718                         ]);
3719                 }
3720                 DI::profiler()->stopRecording();
3721                 return $content;
3722         }
3723
3724         /**
3725          * get private link for item
3726          *
3727          * @param array $item
3728          * @return boolean|array False if item has not plink, otherwise array('href'=>plink url, 'title'=>translated title)
3729          * @throws \Exception
3730          */
3731         public static function getPlink(array $item)
3732         {
3733                 if (!empty($item['plink']) && Network::isValidHttpUrl($item['plink'])) {
3734                         $plink = $item['plink'];
3735                 } elseif (!empty($item['uri']) && Network::isValidHttpUrl($item['uri']) && !Network::isLocalLink($item['uri'])) {
3736                         $plink = $item['uri'];
3737                 }
3738
3739                 if (DI::userSession()->getLocalUserId()) {
3740                         $ret = [
3741                                 'href' => "display/" . $item['guid'],
3742                                 'orig' => "display/" . $item['guid'],
3743                                 'title' => DI::l10n()->t('View on separate page'),
3744                                 'orig_title' => DI::l10n()->t('View on separate page'),
3745                         ];
3746
3747                         if (!empty($plink) && ($item['private'] == self::PRIVATE)) {
3748                                 $author = [
3749                                         'uid'     => 0,
3750                                         'id'      => $item['author-id'],
3751                                         'network' => $item['author-network'],
3752                                         'url'     => $item['author-link'],
3753                                         'alias'   => $item['author-alias'],
3754                                 ];
3755                                 $plink = Contact::magicLinkByContact($author, $plink);
3756                         }
3757
3758                         if (!empty($plink)) {
3759                                 $ret['href'] = DI::baseUrl()->remove($plink);
3760                                 $ret['title'] = DI::l10n()->t('Link to source');
3761                         }
3762                 } elseif (!empty($plink) && ($item['private'] != self::PRIVATE)) {
3763                         $ret = [
3764                                 'href' => $plink,
3765                                 'orig' => $plink,
3766                                 'title' => DI::l10n()->t('Link to source'),
3767                                 'orig_title' => DI::l10n()->t('Link to source'),
3768                         ];
3769                 } else {
3770                         $ret = [];
3771                 }
3772
3773                 return $ret;
3774         }
3775
3776         /**
3777          * Does the given uri-id belongs to a post that is sent as starting post to a group?
3778          * This does apply to posts that are sent via ! and not in parallel to a group via @
3779          *
3780          * @param int $uri_id
3781          *
3782          * @return boolean "true" when it is a group post
3783          */
3784         public static function isGroupPost(int $uri_id): bool
3785         {
3786                 if (Post::exists(['private' => Item::PUBLIC, 'uri-id' => $uri_id])) {
3787                         return false;
3788                 }
3789
3790                 foreach (Tag::getByURIId($uri_id, [Tag::EXCLUSIVE_MENTION, Tag::AUDIENCE]) as $tag) {
3791                         // @todo Possibly check for a public audience in the future, see https://socialhub.activitypub.rocks/t/fep-1b12-group-federation/2724
3792                         // and https://codeberg.org/fediverse/fep/src/branch/main/feps/fep-1b12.md
3793                         if (DBA::exists('contact', ['uid' => 0, 'nurl' => Strings::normaliseLink($tag['url']), 'contact-type' => Contact::TYPE_COMMUNITY])) {
3794                                 return true;
3795                         }
3796                 }
3797                 return false;
3798         }
3799
3800         /**
3801          * Search item id for given URI or plink
3802          *
3803          * @param string $uri
3804          * @param integer $uid
3805          *
3806          * @return integer item id
3807          */
3808         public static function searchByLink(string $uri, int $uid = 0): int
3809         {
3810                 $ssl_uri = str_replace('http://', 'https://', $uri);
3811                 $uris = [$uri, $ssl_uri, Strings::normaliseLink($uri)];
3812
3813                 $item = Post::selectFirst(['id'], ['uri' => $uris, 'uid' => $uid]);
3814                 if (DBA::isResult($item)) {
3815                         return $item['id'];
3816                 }
3817
3818                 $item = Post::selectFirst(['id'], ['plink' => $uris, 'uid' => $uid]);
3819                 if (DBA::isResult($item)) {
3820                         return $item['id'];
3821                 }
3822
3823                 return 0;
3824         }
3825
3826         /**
3827          * Return the URI for a link to the post
3828          *
3829          * @param string $uri URI or link to post
3830          *
3831          * @return string URI
3832          */
3833         public static function getURIByLink(string $uri): string
3834         {
3835                 $ssl_uri = str_replace('http://', 'https://', $uri);
3836                 $uris = [$uri, $ssl_uri, Strings::normaliseLink($uri)];
3837
3838                 $item = Post::selectFirst(['uri'], ['uri' => $uris]);
3839                 if (DBA::isResult($item)) {
3840                         return $item['uri'];
3841                 }
3842
3843                 $item = Post::selectFirst(['uri'], ['plink' => $uris]);
3844                 if (DBA::isResult($item)) {
3845                         return $item['uri'];
3846                 }
3847
3848                 return '';
3849         }
3850
3851         /**
3852          * Fetches item for given URI or plink
3853          *
3854          * @param string $uri
3855          * @param integer $uid
3856          *
3857          * @return integer item id
3858          */
3859         public static function fetchByLink(string $uri, int $uid = 0): int
3860         {
3861                 Logger::info('Trying to fetch link', ['uid' => $uid, 'uri' => $uri]);
3862                 $item_id = self::searchByLink($uri, $uid);
3863                 if (!empty($item_id)) {
3864                         Logger::info('Link found', ['uid' => $uid, 'uri' => $uri, 'id' => $item_id]);
3865                         return $item_id;
3866                 }
3867
3868                 $hookData = [
3869                         'uri'     => $uri,
3870                         'uid'     => $uid,
3871                         'item_id' => null,
3872                 ];
3873
3874                 Hook::callAll('item_by_link', $hookData);
3875
3876                 if (isset($hookData['item_id'])) {
3877                         return is_numeric($hookData['item_id']) ? $hookData['item_id'] : 0;
3878                 }
3879
3880                 $fetched_uri = ActivityPub\Processor::fetchMissingActivity($uri, [], '', ActivityPub\Receiver::COMPLETION_MANUAL, $uid);
3881
3882                 if ($fetched_uri) {
3883                         $item_id = self::searchByLink($fetched_uri, $uid);
3884                 } else {
3885                         $item_id = Diaspora::fetchByURL($uri);
3886                 }
3887
3888                 if (!empty($item_id)) {
3889                         Logger::info('Link fetched', ['uid' => $uid, 'uri' => $uri, 'id' => $item_id]);
3890                         return $item_id;
3891                 }
3892
3893                 Logger::info('Link not found', ['uid' => $uid, 'uri' => $uri]);
3894                 return 0;
3895         }
3896
3897         /**
3898          * Fetch the uri-id of a quote
3899          *
3900          * @param string $body
3901          * @return integer
3902          */
3903         public static function getQuoteUriId(string $body, int $uid = 0): int
3904         {
3905                 $shared = BBCode::fetchShareAttributes($body);
3906                 if (empty($shared['guid']) && empty($shared['message_id'])) {
3907                         return 0;
3908                 }
3909
3910                 if (empty($shared['link']) && empty($shared['message_id'])) {
3911                         Logger::notice('Invalid share block.', ['share' => $shared]);
3912                         return 0;
3913                 }
3914
3915                 if (!empty($shared['guid'])) {
3916                         $shared_item = Post::selectFirst(['uri-id'], ['guid' => $shared['guid'], 'uid' => [0, $uid]]);
3917                         if (!empty($shared_item['uri-id'])) {
3918                                 Logger::debug('Found post by guid', ['guid' => $shared['guid'], 'uid' => $uid]);
3919                                 return $shared_item['uri-id'];
3920                         }
3921                 }
3922
3923                 if (!empty($shared['message_id'])) {
3924                         $shared_item = Post::selectFirst(['uri-id'], ['uri' => $shared['message_id'], 'uid' => [0, $uid]]);
3925                         if (!empty($shared_item['uri-id'])) {
3926                                 Logger::debug('Found post by message_id', ['message_id' => $shared['message_id'], 'uid' => $uid]);
3927                                 return $shared_item['uri-id'];
3928                         }
3929                 }
3930
3931                 if (!empty($shared['link'])) {
3932                         $shared_item = Post::selectFirst(['uri-id'], ['plink' => $shared['link'], 'uid' => [0, $uid]]);
3933                         if (!empty($shared_item['uri-id'])) {
3934                                 Logger::debug('Found post by link', ['link' => $shared['link'], 'uid' => $uid]);
3935                                 return $shared_item['uri-id'];
3936                         }
3937                 }
3938
3939                 $url = $shared['message_id'] ?: $shared['link'];
3940                 $id = self::fetchByLink($url);
3941                 if (!$id) {
3942                         Logger::notice('Post could not be fetched.', ['url' => $url, 'uid' => $uid]);
3943                         return 0;
3944                 }
3945
3946                 $shared_item = Post::selectFirst(['uri-id'], ['id' => $id]);
3947                 if (!empty($shared_item['uri-id'])) {
3948                         Logger::debug('Fetched shared post', ['id' => $id, 'url' => $url, 'uid' => $uid]);
3949                         return $shared_item['uri-id'];
3950                 }
3951
3952                 Logger::warning('Post does not exist although it was supposed to had been fetched.', ['id' => $id, 'url' => $url, 'uid' => $uid]);
3953                 return 0;
3954         }
3955 }