mod/item.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, 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  * This is the POST destination for most all locally posted
  21  * text stuff. This function handles status, wall-to-wall status,
  22  * local comments, and remote coments that are posted on this site
  23  * (as opposed to being delivered in a feed).
  24  * Also processed here are posts and comments coming through the
  25  * statusnet/twitter API.
  26  *
  27  * All of these become an "item" which is our basic unit of
  28  * information.
  29  */
  30
  31 use Friendica\App;
  32 use Friendica\Content\PageInfo;
  33 use Friendica\Content\Text\BBCode;
  34 use Friendica\Core\Hook;
  35 use Friendica\Core\Logger;
  36 use Friendica\Core\Protocol;
  37 use Friendica\Core\Session;
  38 use Friendica\Core\System;
  39 use Friendica\Core\Worker;
  40 use Friendica\Database\DBA;
  41 use Friendica\DI;
  42 use Friendica\Model\Attach;
  43 use Friendica\Model\Contact;
  44 use Friendica\Model\Conversation;
  45 use Friendica\Model\FileTag;
  46 use Friendica\Model\Item;
  47 use Friendica\Model\ItemURI;
  48 use Friendica\Model\Notification;
  49 use Friendica\Model\Photo;
  50 use Friendica\Model\Post;
  51 use Friendica\Model\Tag;
  52 use Friendica\Model\User;
  53 use Friendica\Network\HTTPException;
  54 use Friendica\Object\EMail\ItemCCEMail;
  55 use Friendica\Protocol\Activity;
  56 use Friendica\Security\Security;
  57 use Friendica\Util\DateTimeFormat;
  58 use Friendica\Util\ParseUrl;
  59
  60 function item_post(App $a) {
  61         if (!Session::isAuthenticated()) {
  62                 throw new HTTPException\ForbiddenException();
  63         }
  64
  65         $uid = Session::getLocalUser();
  66
  67         if (!empty($_REQUEST['dropitems'])) {
  68                 $arr_drop = explode(',', $_REQUEST['dropitems']);
  69                 foreach ($arr_drop as $item) {
  70                         Item::deleteForUser(['id' => $item], $uid);
  71                 }
  72
  73                 $json = ['success' => 1];
  74                 System::jsonExit($json);
  75         }
  76
  77         Hook::callAll('post_local_start', $_REQUEST);
  78
  79         Logger::debug('postvars', ['_REQUEST' => $_REQUEST]);
  80
  81         $api_source = $_REQUEST['api_source'] ?? false;
  82
  83         $return_path = $_REQUEST['return'] ?? '';
  84         $preview = intval($_REQUEST['preview'] ?? 0);
  85
  86         /*
  87          * Check for doubly-submitted posts, and reject duplicates
  88          * Note that we have to ignore previews, otherwise nothing will post
  89          * after it's been previewed
  90          */
  91         if (!$preview && !empty($_REQUEST['post_id_random'])) {
  92                 if (!empty($_SESSION['post-random']) && $_SESSION['post-random'] == $_REQUEST['post_id_random']) {
  93                         Logger::warning('duplicate post');
  94                         item_post_return(DI::baseUrl(), $api_source, $return_path);
  95                 } else {
  96                         $_SESSION['post-random'] = $_REQUEST['post_id_random'];
  97                 }
  98         }
  99
 100         // Is this a reply to something?
 101         $parent_item_id = intval($_REQUEST['parent'] ?? 0);
 102         $thr_parent_uri = trim($_REQUEST['parent_uri'] ?? '');
 103
 104         $parent_item = null;
 105         $toplevel_item = null;
 106         $toplevel_item_id = 0;
 107         $toplevel_user_id = null;
 108
 109         $objecttype = null;
 110         $profile_uid = ($_REQUEST['profile_uid'] ?? 0) ?: Session::getLocalUser();
 111         $posttype = ($_REQUEST['post_type'] ?? '') ?: Item::PT_ARTICLE;
 112
 113         if ($parent_item_id || $thr_parent_uri) {
 114                 if ($parent_item_id) {
 115                         $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $parent_item_id]);
 116                 } elseif ($thr_parent_uri) {
 117                         $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
 118                 }
 119
 120                 // if this isn't the top-level parent of the conversation, find it
 121                 if (DBA::isResult($parent_item)) {
 122                         // The URI and the contact is taken from the direct parent which needn't to be the top parent
 123                         $thr_parent_uri = $parent_item['uri'];
 124                         $toplevel_item = $parent_item;
 125
 126                         if ($parent_item['gravity'] != Item::GRAVITY_PARENT) {
 127                                 $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $toplevel_item['parent']]);
 128                         }
 129                 }
 130
 131                 if (!DBA::isResult($toplevel_item)) {
 132                         DI::sysmsg()->addNotice(DI::l10n()->t('Unable to locate original post.'));
 133                         if ($return_path) {
 134                                 DI::baseUrl()->redirect($return_path);
 135                         }
 136                         throw new HTTPException\NotFoundException(DI::l10n()->t('Unable to locate original post.'));
 137                 }
 138
 139                 // When commenting on a public post then store the post for the current user
 140                 // This enables interaction like starring and saving into folders
 141                 if ($toplevel_item['uid'] == 0) {
 142                         $stored = Item::storeForUserByUriId($toplevel_item['uri-id'], Session::getLocalUser(), ['post-reason' => Item::PR_ACTIVITY]);
 143                         Logger::info('Public item stored for user', ['uri-id' => $toplevel_item['uri-id'], 'uid' => $uid, 'stored' => $stored]);
 144                         if ($stored) {
 145                                 $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $stored]);
 146                         }
 147                 }
 148
 149                 $toplevel_item_id = $toplevel_item['id'];
 150                 $toplevel_user_id = $toplevel_item['uid'];
 151
 152                 $objecttype = Activity\ObjectType::COMMENT;
 153         }
 154
 155         if ($toplevel_item_id) {
 156                 Logger::info('mod_item: item_post', ['parent' => $toplevel_item_id]);
 157         }
 158
 159         $post_id     = intval($_REQUEST['post_id'] ?? 0);
 160         $app         = strip_tags($_REQUEST['source'] ?? '');
 161         $extid       = strip_tags($_REQUEST['extid'] ?? '');
 162         $object      = $_REQUEST['object'] ?? '';
 163
 164         // Don't use "defaults" here. It would turn 0 to 1
 165         if (!isset($_REQUEST['wall'])) {
 166                 $wall = 1;
 167         } else {
 168                 $wall = $_REQUEST['wall'];
 169         }
 170
 171         // Ensure that the user id in a thread always stay the same
 172         if (!is_null($toplevel_user_id) && in_array($toplevel_user_id, [Session::getLocalUser(), 0])) {
 173                 $profile_uid = $toplevel_user_id;
 174         }
 175
 176         // Allow commenting if it is an answer to a public post
 177         $allow_comment = Session::getLocalUser() && $toplevel_item_id && in_array($toplevel_item['private'], [Item::PUBLIC, Item::UNLISTED]) && in_array($toplevel_item['network'], Protocol::FEDERATED);
 178
 179         // Now check that valid personal details have been provided
 180         if (!Security::canWriteToUserWall($profile_uid) && !$allow_comment) {
 181                 Logger::warning('Permission denied.', ['local' => Session::getLocalUser(), 'profile_uid' => $profile_uid, 'toplevel_item_id' => $toplevel_item_id, 'network' => $toplevel_item['network']]);
 182                 DI::sysmsg()->addNotice(DI::l10n()->t('Permission denied.'));
 183                 if ($return_path) {
 184                         DI::baseUrl()->redirect($return_path);
 185                 }
 186
 187                 throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
 188         }
 189
 190         // Init post instance
 191         $orig_post = null;
 192
 193         // is this an edited post?
 194         if ($post_id > 0) {
 195                 $orig_post = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 196         }
 197
 198         $user = User::getById($profile_uid, ['allow_cid', 'allow_gid', 'deny_cid', 'deny_gid']);
 199         if (!DBA::isResult($user) && !$toplevel_item_id) {
 200                 return 0;
 201         }
 202
 203         $categories = '';
 204         $postopts = '';
 205         $emailcc = '';
 206         $body = $_REQUEST['body'] ?? '';
 207         $has_attachment = $_REQUEST['has_attachment'] ?? 0;
 208
 209         // If we have a speparate attachment, we need to add it to the body.
 210         if (!empty($has_attachment)) {
 211                 $attachment_type  = $_REQUEST['attachment_type'] ??  '';
 212                 $attachment_title = $_REQUEST['attachment_title'] ?? '';
 213                 $attachment_text  = $_REQUEST['attachment_text'] ??  '';
 214
 215                 $attachment_url     = hex2bin($_REQUEST['attachment_url'] ??     '');
 216                 $attachment_img_src = hex2bin($_REQUEST['attachment_img_src'] ?? '');
 217
 218                 $attachment_img_width  = $_REQUEST['attachment_img_width'] ??  0;
 219                 $attachment_img_height = $_REQUEST['attachment_img_height'] ?? 0;
 220
 221                 // Fetch the basic attachment data
 222                 $attachment = ParseUrl::getSiteinfoCached($attachment_url);
 223                 unset($attachment['keywords']);
 224
 225                 // Overwrite the basic data with possible changes from the frontend
 226                 $attachment['type'] = $attachment_type;
 227                 $attachment['title'] = $attachment_title;
 228                 $attachment['text'] = $attachment_text;
 229                 $attachment['url'] = $attachment_url;
 230
 231                 if (!empty($attachment_img_src)) {
 232                         $attachment['images'] = [
 233                                 0 => [
 234                                         'src'    => $attachment_img_src,
 235                                         'width'  => $attachment_img_width,
 236                                         'height' => $attachment_img_height
 237                                 ]
 238                         ];
 239                 } else {
 240                         unset($attachment['images']);
 241                 }
 242
 243                 $att_bbcode = "\n" . PageInfo::getFooterFromData($attachment);
 244                 $body .= $att_bbcode;
 245         }
 246
 247         // Convert links with empty descriptions to links without an explicit description
 248         $body = preg_replace('#\[url=([^\]]*?)\]\[/url\]#ism', '[url]$1[/url]', $body);
 249
 250         if (!empty($orig_post)) {
 251                 $str_group_allow   = $orig_post['allow_gid'];
 252                 $str_contact_allow = $orig_post['allow_cid'];
 253                 $str_group_deny    = $orig_post['deny_gid'];
 254                 $str_contact_deny  = $orig_post['deny_cid'];
 255                 $location          = $orig_post['location'];
 256                 $coord             = $orig_post['coord'];
 257                 $verb              = $orig_post['verb'];
 258                 $objecttype        = $orig_post['object-type'];
 259                 $app               = $orig_post['app'];
 260                 $categories        = Post\Category::getTextByURIId($orig_post['uri-id'], $orig_post['uid']);
 261                 $title             = trim($_REQUEST['title'] ?? '');
 262                 $body              = trim($body);
 263                 $private           = $orig_post['private'];
 264                 $pubmail_enabled   = $orig_post['pubmail'];
 265                 $network           = $orig_post['network'];
 266                 $guid              = $orig_post['guid'];
 267                 $extid             = $orig_post['extid'];
 268         } else {
 269                 $aclFormatter = DI::aclFormatter();
 270                 $str_contact_allow = isset($_REQUEST['contact_allow']) ? $aclFormatter->toString($_REQUEST['contact_allow']) : $user['allow_cid'] ?? '';
 271                 $str_group_allow   = isset($_REQUEST['group_allow'])   ? $aclFormatter->toString($_REQUEST['group_allow'])   : $user['allow_gid'] ?? '';
 272                 $str_contact_deny  = isset($_REQUEST['contact_deny'])  ? $aclFormatter->toString($_REQUEST['contact_deny'])  : $user['deny_cid']  ?? '';
 273                 $str_group_deny    = isset($_REQUEST['group_deny'])    ? $aclFormatter->toString($_REQUEST['group_deny'])    : $user['deny_gid']  ?? '';
 274
 275                 $visibility = $_REQUEST['visibility'] ?? '';
 276                 if ($visibility === 'public') {
 277                         // The ACL selector introduced in version 2019.12 sends ACL input data even when the Public visibility is selected
 278                         $str_contact_allow = $str_group_allow = $str_contact_deny = $str_group_deny = '';
 279                 } else if ($visibility === 'custom') {
 280                         // Since we know from the visibility parameter the item should be private, we have to prevent the empty ACL
 281                         // case that would make it public. So we always append the author's contact id to the allowed contacts.
 282                         // See https://github.com/friendica/friendica/issues/9672
 283                         $str_contact_allow .= $aclFormatter->toString(Contact::getPublicIdByUserId($uid));
 284                 }
 285
 286                 $title             = trim($_REQUEST['title']    ?? '');
 287                 $location          = trim($_REQUEST['location'] ?? '');
 288                 $coord             = trim($_REQUEST['coord']    ?? '');
 289                 $verb              = trim($_REQUEST['verb']     ?? '');
 290                 $emailcc           = trim($_REQUEST['emailcc']  ?? '');
 291                 $body              = trim($body);
 292                 $network           = trim(($_REQUEST['network']  ?? '') ?: Protocol::DFRN);
 293                 $guid              = System::createUUID();
 294
 295                 $postopts = $_REQUEST['postopts'] ?? '';
 296
 297                 if (strlen($str_group_allow) || strlen($str_contact_allow) || strlen($str_group_deny) || strlen($str_contact_deny)) {
 298                         $private = Item::PRIVATE;
 299                 } elseif (DI::pConfig()->get($profile_uid, 'system', 'unlisted')) {
 300                         $private = Item::UNLISTED;
 301                 } else {
 302                         $private = Item::PUBLIC;
 303                 }
 304
 305                 // If this is a comment, set the permissions from the parent.
 306
 307                 if ($toplevel_item) {
 308                         // for non native networks use the network of the original post as network of the item
 309                         if (($toplevel_item['network'] != Protocol::DIASPORA)
 310                                 && ($toplevel_item['network'] != Protocol::OSTATUS)
 311                                 && ($network == '')) {
 312                                 $network = $toplevel_item['network'];
 313                         }
 314
 315                         $str_contact_allow = $toplevel_item['allow_cid'] ?? '';
 316                         $str_group_allow   = $toplevel_item['allow_gid'] ?? '';
 317                         $str_contact_deny  = $toplevel_item['deny_cid'] ?? '';
 318                         $str_group_deny    = $toplevel_item['deny_gid'] ?? '';
 319                         $private           = $toplevel_item['private'];
 320
 321                         $wall              = $toplevel_item['wall'];
 322                 }
 323
 324                 $pubmail_enabled = ($_REQUEST['pubmail_enable'] ?? false) && !$private;
 325
 326                 // if using the API, we won't see pubmail_enable - figure out if it should be set
 327                 if ($api_source && $profile_uid && $profile_uid == Session::getLocalUser() && !$private) {
 328                         if (function_exists('imap_open') && !DI::config()->get('system', 'imap_disabled')) {
 329                                 $pubmail_enabled = DBA::exists('mailacct', ["`uid` = ? AND `server` != ? AND `pubmail`", Session::getLocalUser(), '']);
 330                         }
 331                 }
 332
 333                 if (!strlen($body)) {
 334                         if ($preview) {
 335                                 System::jsonExit(['preview' => '']);
 336                         }
 337
 338                         DI::sysmsg()->addNotice(DI::l10n()->t('Empty post discarded.'));
 339                         if ($return_path) {
 340                                 DI::baseUrl()->redirect($return_path);
 341                         }
 342
 343                         throw new HTTPException\BadRequestException(DI::l10n()->t('Empty post discarded.'));
 344                 }
 345         }
 346
 347         if (!empty($categories)) {
 348                 // get the "fileas" tags for this post
 349                 $filedas = FileTag::fileToArray($categories);
 350         }
 351
 352         $list_array = explode(',', trim($_REQUEST['category'] ?? ''));
 353         $categories = FileTag::arrayToFile($list_array, 'category');
 354
 355         if (!empty($filedas) && is_array($filedas)) {
 356                 // append the fileas stuff to the new categories list
 357                 $categories .= FileTag::arrayToFile($filedas);
 358         }
 359
 360         // get contact info for poster
 361
 362         $author = null;
 363         $self   = false;
 364         $contact_id = 0;
 365
 366         if (Session::getLocalUser() && ((Session::getLocalUser() == $profile_uid) || $allow_comment)) {
 367                 $self = true;
 368                 $author = DBA::selectFirst('contact', [], ['uid' => Session::getLocalUser(), 'self' => true]);
 369         } elseif (!empty(Session::getRemoteContactID($profile_uid))) {
 370                 $author = DBA::selectFirst('contact', [], ['id' => Session::getRemoteContactID($profile_uid)]);
 371         }
 372
 373         if (DBA::isResult($author)) {
 374                 $contact_id = $author['id'];
 375         }
 376
 377         // get contact info for owner
 378         if ($profile_uid == Session::getLocalUser() || $allow_comment) {
 379                 $contact_record = $author ?: [];
 380         } else {
 381                 $contact_record = DBA::selectFirst('contact', [], ['uid' => $profile_uid, 'self' => true]) ?: [];
 382         }
 383
 384         // Personal notes must never be altered to a forum post.
 385         if ($posttype != Item::PT_PERSONAL_NOTE) {
 386                 // Look for any tags and linkify them
 387                 $item = [
 388                         'uid'       => Session::getLocalUser() ? Session::getLocalUser() : $profile_uid,
 389                         'gravity'   => $toplevel_item_id ? Item::GRAVITY_COMMENT : Item::GRAVITY_PARENT,
 390                         'network'   => $network,
 391                         'body'      => $body,
 392                         'postopts'  => $postopts,
 393                         'private'   => $private,
 394                         'allow_cid' => $str_contact_allow,
 395                         'allow_gid' => $str_group_allow,
 396                         'deny_cid'  => $str_contact_deny,
 397                         'deny_gid'  => $str_group_deny,
 398                 ];
 399
 400                 $item = DI::contentItem()->expandTags($item);
 401
 402                 $body              = $item['body'];
 403                 $inform            = $item['inform'];
 404                 $postopts          = $item['postopts'];
 405                 $private           = $item['private'];
 406                 $str_contact_allow = $item['allow_cid'];
 407                 $str_group_allow   = $item['allow_gid'];
 408                 $str_contact_deny  = $item['deny_cid'];
 409                 $str_group_deny    = $item['deny_gid'];
 410         } else {
 411                 $inform   = '';
 412         }
 413
 414         /*
 415          * When a photo was uploaded into the message using the (profile wall) ajax
 416          * uploader, The permissions are initially set to disallow anybody but the
 417          * owner from seeing it. This is because the permissions may not yet have been
 418          * set for the post. If it's private, the photo permissions should be set
 419          * appropriately. But we didn't know the final permissions on the post until
 420          * now. So now we'll look for links of uploaded messages that are in the
 421          * post and set them to the same permissions as the post itself.
 422          */
 423
 424         $match = null;
 425
 426         if (!$preview && Photo::setPermissionFromBody($body, $uid, $contact_id, $str_contact_allow, $str_group_allow, $str_contact_deny, $str_group_deny)) {
 427                 $objecttype = Activity\ObjectType::IMAGE;
 428         }
 429
 430         /*
 431          * Next link in any attachment references we find in the post.
 432          */
 433         $match = [];
 434
 435         /// @todo these lines should be moved to Model/Attach (Once it exists)
 436         if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
 437                 $attaches = $match[1];
 438                 if (count($attaches)) {
 439                         foreach ($attaches as $attach) {
 440                                 // Ensure to only modify attachments that you own
 441                                 $srch = '<' . intval($contact_id) . '>';
 442
 443                                 $condition = [
 444                                         'allow_cid' => $srch,
 445                                         'allow_gid' => '',
 446                                         'deny_cid' => '',
 447                                         'deny_gid' => '',
 448                                         'id' => $attach,
 449                                 ];
 450                                 if (!Attach::exists($condition)) {
 451                                         continue;
 452                                 }
 453
 454                                 $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
 455                                                 'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
 456                                 $condition = ['id' => $attach];
 457                                 Attach::update($fields, $condition);
 458                         }
 459                 }
 460         }
 461
 462         // embedded bookmark or attachment in post? set bookmark flag
 463
 464         $data = BBCode::getAttachmentData($body);
 465         $match = [];
 466         if ((preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data['type']))
 467                 && ($posttype != Item::PT_PERSONAL_NOTE)) {
 468                 $posttype = Item::PT_PAGE;
 469                 $objecttype =  Activity\ObjectType::BOOKMARK;
 470         }
 471
 472         $body = DI::bbCodeVideo()->transform($body);
 473
 474         $body = BBCode::scaleExternalImages($body);
 475
 476         // Setting the object type if not defined before
 477         if (!$objecttype) {
 478                 $objecttype = Activity\ObjectType::NOTE; // Default value
 479                 $objectdata = BBCode::getAttachedData($body);
 480
 481                 if ($objectdata['type'] == 'link') {
 482                         $objecttype = Activity\ObjectType::BOOKMARK;
 483                 } elseif ($objectdata['type'] == 'video') {
 484                         $objecttype = Activity\ObjectType::VIDEO;
 485                 } elseif ($objectdata['type'] == 'photo') {
 486                         $objecttype = Activity\ObjectType::IMAGE;
 487                 }
 488
 489         }
 490
 491         $attachments = '';
 492         $match = [];
 493
 494         if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
 495                 foreach ($match[2] as $mtch) {
 496                         $fields = ['id', 'filename', 'filesize', 'filetype'];
 497                         $attachment = Attach::selectFirst($fields, ['id' => $mtch]);
 498                         if ($attachment !== false) {
 499                                 if (strlen($attachments)) {
 500                                         $attachments .= ',';
 501                                 }
 502                                 $attachments .= Post\Media::getAttachElement(DI::baseUrl() . '/attach/' . $attachment['id'],
 503                                         $attachment['filesize'], $attachment['filetype'], $attachment['filename'] ?? '');
 504                         }
 505                         $body = str_replace($match[1],'',$body);
 506                 }
 507         }
 508
 509         if (!strlen($verb)) {
 510                 $verb = Activity::POST;
 511         }
 512
 513         if ($network == '') {
 514                 $network = Protocol::DFRN;
 515         }
 516
 517         $gravity = ($toplevel_item_id ? Item::GRAVITY_COMMENT : Item::GRAVITY_PARENT);
 518
 519         // even if the post arrived via API we are considering that it
 520         // originated on this site by default for determining relayability.
 521
 522         // Don't use "defaults" here. It would turn 0 to 1
 523         if (!isset($_REQUEST['origin'])) {
 524                 $origin = 1;
 525         } else {
 526                 $origin = $_REQUEST['origin'];
 527         }
 528
 529         $uri = Item::newURI($guid);
 530
 531         // Fallback so that we alway have a parent uri
 532         if (!$thr_parent_uri || !$toplevel_item_id) {
 533                 $thr_parent_uri = $uri;
 534         }
 535
 536         $datarray = [
 537                 'uid'           => $profile_uid,
 538                 'wall'          => $wall,
 539                 'gravity'       => $gravity,
 540                 'network'       => $network,
 541                 'contact-id'    => $contact_id,
 542                 'owner-name'    => $contact_record['name'] ?? '',
 543                 'owner-link'    => $contact_record['url'] ?? '',
 544                 'owner-avatar'  => $contact_record['thumb'] ?? '',
 545                 'author-name'   => $author['name'],
 546                 'author-link'   => $author['url'],
 547                 'author-avatar' => $author['thumb'],
 548                 'created'       => empty($_REQUEST['created_at']) ? DateTimeFormat::utcNow() : $_REQUEST['created_at'],
 549                 'received'      => DateTimeFormat::utcNow(),
 550                 'extid'         => $extid,
 551                 'guid'          => $guid,
 552                 'uri'           => $uri,
 553                 'title'         => $title,
 554                 'body'          => $body,
 555                 'app'           => $app,
 556                 'location'      => $location,
 557                 'coord'         => $coord,
 558                 'file'          => $categories,
 559                 'inform'        => $inform,
 560                 'verb'          => $verb,
 561                 'post-type'     => $posttype,
 562                 'object-type'   => $objecttype,
 563                 'allow_cid'     => $str_contact_allow,
 564                 'allow_gid'     => $str_group_allow,
 565                 'deny_cid'      => $str_contact_deny,
 566                 'deny_gid'      => $str_group_deny,
 567                 'private'       => $private,
 568                 'pubmail'       => $pubmail_enabled,
 569                 'attach'        => $attachments,
 570                 'thr-parent'    => $thr_parent_uri,
 571                 'postopts'      => $postopts,
 572                 'origin'        => $origin,
 573                 'object'        => $object,
 574                 'attachments'   => $_REQUEST['attachments'] ?? [],
 575                 /*
 576                  * These fields are for the convenience of addons...
 577                  * 'self' if true indicates the owner is posting on their own wall
 578                  * If parent is 0 it is a top-level post.
 579                  */
 580                 'parent'        => $toplevel_item_id,
 581                 'self'          => $self,
 582                 // This triggers posts via API and the mirror functions
 583                 'api_source'    => $api_source,
 584                 // This field is for storing the raw conversation data
 585                 'protocol'      => Conversation::PARCEL_DIRECT,
 586                 'direction'     => Conversation::PUSH,
 587         ];
 588
 589         // These cannot be part of above initialization ...
 590         $datarray['edited']    = $datarray['created'];
 591         $datarray['commented'] = $datarray['created'];
 592         $datarray['changed']   = $datarray['created'];
 593         $datarray['owner-id']  = Contact::getIdForURL($datarray['owner-link']);
 594         $datarray['author-id'] = Contact::getIdForURL($datarray['author-link']);
 595
 596         $datarray['edit'] = $orig_post;
 597
 598         // Check for hashtags in the body and repair or add hashtag links
 599         if ($preview || $orig_post) {
 600                 $datarray['body'] = Item::setHashtags($datarray['body']);
 601         }
 602
 603         // preview mode - prepare the body for display and send it via json
 604         if ($preview) {
 605                 // We set the datarray ID to -1 because in preview mode the dataray
 606                 // doesn't have an ID.
 607                 $datarray['id'] = -1;
 608                 $datarray['uri-id'] = -1;
 609                 $datarray['author-network'] = Protocol::DFRN;
 610                 $datarray['author-updated'] = '';
 611                 $datarray['author-gsid'] = 0;
 612                 $datarray['author-uri-id'] = ItemURI::getIdByURI($datarray['author-link']);
 613                 $datarray['owner-updated'] = '';
 614                 $datarray['has-media'] = false;
 615                 $datarray['body'] = Item::improveSharedDataInBody($datarray);
 616
 617                 $o = DI::conversation()->create([array_merge($contact_record, $datarray)], 'search', false, true);
 618
 619                 System::jsonExit(['preview' => $o]);
 620         }
 621
 622         Hook::callAll('post_local',$datarray);
 623
 624         if (!empty($_REQUEST['scheduled_at'])) {
 625                 $scheduled_at = DateTimeFormat::convert($_REQUEST['scheduled_at'], 'UTC', $a->getTimeZone());
 626                 if ($scheduled_at > DateTimeFormat::utcNow()) {
 627                         unset($datarray['created']);
 628                         unset($datarray['edited']);
 629                         unset($datarray['commented']);
 630                         unset($datarray['received']);
 631                         unset($datarray['changed']);
 632                         unset($datarray['edit']);
 633                         unset($datarray['self']);
 634                         unset($datarray['api_source']);
 635
 636                         Post\Delayed::add($datarray['uri'], $datarray, Worker::PRIORITY_HIGH, Post\Delayed::PREPARED_NO_HOOK, $scheduled_at);
 637                         item_post_return(DI::baseUrl(), $api_source, $return_path);
 638                 }
 639         }
 640
 641         if (!empty($datarray['cancel'])) {
 642                 Logger::info('mod_item: post cancelled by addon.');
 643                 if ($return_path) {
 644                         DI::baseUrl()->redirect($return_path);
 645                 }
 646
 647                 $json = ['cancel' => 1];
 648                 if (!empty($_REQUEST['jsreload'])) {
 649                         $json['reload'] = DI::baseUrl() . '/' . $_REQUEST['jsreload'];
 650                 }
 651
 652                 System::jsonExit($json);
 653         }
 654
 655         $datarray['uri-id'] = ItemURI::getIdByURI($datarray['uri']);
 656         $datarray['body']   = Item::improveSharedDataInBody($datarray);
 657
 658         if ($orig_post) {
 659                 $fields = [
 660                         'title'   => $datarray['title'],
 661                         'body'    => $datarray['body'],
 662                         'attach'  => $datarray['attach'],
 663                         'file'    => $datarray['file'],
 664                         'edited'  => DateTimeFormat::utcNow(),
 665                         'changed' => DateTimeFormat::utcNow()
 666                 ];
 667
 668                 Item::update($fields, ['id' => $post_id]);
 669                 Item::updateDisplayCache($datarray['uri-id']);
 670
 671                 if ($return_path) {
 672                         DI::baseUrl()->redirect($return_path);
 673                 }
 674
 675                 throw new HTTPException\OKException(DI::l10n()->t('Post updated.'));
 676         }
 677
 678         unset($datarray['edit']);
 679         unset($datarray['self']);
 680         unset($datarray['api_source']);
 681
 682         $post_id = Item::insert($datarray);
 683
 684         if (!$post_id) {
 685                 DI::sysmsg()->addNotice(DI::l10n()->t('Item wasn\'t stored.'));
 686                 if ($return_path) {
 687                         DI::baseUrl()->redirect($return_path);
 688                 }
 689
 690                 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item wasn\'t stored.'));
 691         }
 692
 693         $datarray = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 694
 695         if (!DBA::isResult($datarray)) {
 696                 Logger::error('Item couldn\'t be fetched.', ['post_id' => $post_id]);
 697                 if ($return_path) {
 698                         DI::baseUrl()->redirect($return_path);
 699                 }
 700
 701                 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item couldn\'t be fetched.'));
 702         }
 703
 704         Tag::storeFromBody($datarray['uri-id'], $datarray['body']);
 705
 706         if (!\Friendica\Content\Feature::isEnabled($uid, 'explicit_mentions') && ($datarray['gravity'] == Item::GRAVITY_COMMENT)) {
 707                 Tag::createImplicitMentions($datarray['uri-id'], $datarray['thr-parent-id']);
 708         }
 709
 710         // These notifications are sent if someone else is commenting other your wall
 711         if ($contact_record != $author) {
 712                 if ($toplevel_item_id) {
 713                         DI::notify()->createFromArray([
 714                                 'type'  => Notification\Type::COMMENT,
 715                                 'otype' => Notification\ObjectType::ITEM,
 716                                 'verb'  => Activity::POST,
 717                                 'uid'   => $profile_uid,
 718                                 'cid'   => $datarray['author-id'],
 719                                 'item'  => $datarray,
 720                                 'link'  => DI::baseUrl() . '/display/' . urlencode($datarray['guid']),
 721                         ]);
 722                 } elseif (empty($forum_contact)) {
 723                         DI::notify()->createFromArray([
 724                                 'type'  => Notification\Type::WALL,
 725                                 'otype' => Notification\ObjectType::ITEM,
 726                                 'verb'  => Activity::POST,
 727                                 'uid'   => $profile_uid,
 728                                 'cid'   => $datarray['author-id'],
 729                                 'item'  => $datarray,
 730                                 'link'  => DI::baseUrl() . '/display/' . urlencode($datarray['guid']),
 731                         ]);
 732                 }
 733         }
 734
 735         Hook::callAll('post_local_end', $datarray);
 736
 737         if (strlen($emailcc) && $profile_uid == Session::getLocalUser()) {
 738                 $recipients = explode(',', $emailcc);
 739                 if (count($recipients)) {
 740                         foreach ($recipients as $recipient) {
 741                                 $address = trim($recipient);
 742                                 if (!strlen($address)) {
 743                                         continue;
 744                                 }
 745                                 DI::emailer()->send(new ItemCCEMail(DI::app(), DI::l10n(), DI::baseUrl(),
 746                                         $datarray, $address, $author['thumb'] ?? ''));
 747                         }
 748                 }
 749         }
 750
 751         Logger::debug('post_complete');
 752
 753         if ($api_source) {
 754                 return $post_id;
 755         }
 756
 757         item_post_return(DI::baseUrl(), $api_source, $return_path);
 758         // NOTREACHED
 759 }
 760
 761 function item_post_return($baseurl, $api_source, $return_path)
 762 {
 763         if ($api_source) {
 764                 return;
 765         }
 766
 767         if ($return_path) {
 768                 DI::baseUrl()->redirect($return_path);
 769         }
 770
 771         $json = ['success' => 1];
 772         if (!empty($_REQUEST['jsreload'])) {
 773                 $json['reload'] = $baseurl . '/' . $_REQUEST['jsreload'];
 774         }
 775
 776         Logger::debug('post_json', ['json' => $json]);
 777
 778         System::jsonExit($json);
 779 }
 780
 781 function item_content(App $a)
 782 {
 783         if (!Session::isAuthenticated()) {
 784                 throw new HTTPException\UnauthorizedException();
 785         }
 786
 787         $args = DI::args();
 788
 789         if (!$args->has(3)) {
 790                 throw new HTTPException\BadRequestException();
 791         }
 792
 793         $o = '';
 794         switch ($args->get(1)) {
 795                 case 'drop':
 796                         if (DI::mode()->isAjax()) {
 797                                 Item::deleteForUser(['id' => $args->get(2)], Session::getLocalUser());
 798                                 // ajax return: [<item id>, 0 (no perm) | <owner id>]
 799                                 System::jsonExit([intval($args->get(2)), Session::getLocalUser()]);
 800                         } else {
 801                                 if (!empty($args->get(3))) {
 802                                         $o = drop_item($args->get(2), $args->get(3));
 803                                 } else {
 804                                         $o = drop_item($args->get(2));
 805                                 }
 806                         }
 807                         break;
 808
 809                 case 'block':
 810                         $item = Post::selectFirstForUser(Session::getLocalUser(), ['guid', 'author-id', 'parent', 'gravity'], ['id' => $args->get(2)]);
 811                         if (empty($item['author-id'])) {
 812                                 throw new HTTPException\NotFoundException('Item not found');
 813                         }
 814
 815                         Contact\User::setBlocked($item['author-id'], Session::getLocalUser(), true);
 816
 817                         if (DI::mode()->isAjax()) {
 818                                 // ajax return: [<item id>, 0 (no perm) | <owner id>]
 819                                 System::jsonExit([intval($args->get(2)), Session::getLocalUser()]);
 820                         } else {
 821                                 item_redirect_after_action($item, $args->get(3));
 822                         }
 823                         break;
 824         }
 825
 826         return $o;
 827 }
 828
 829 /**
 830  * @param int    $id
 831  * @param string $return
 832  * @return string
 833  * @throws HTTPException\InternalServerErrorException
 834  */
 835 function drop_item(int $id, string $return = ''): string
 836 {
 837         // Locate item to be deleted
 838         $item = Post::selectFirstForUser(Session::getLocalUser(), ['id', 'uid', 'guid', 'contact-id', 'deleted', 'gravity', 'parent'], ['id' => $id]);
 839
 840         if (!DBA::isResult($item)) {
 841                 DI::sysmsg()->addNotice(DI::l10n()->t('Item not found.'));
 842                 DI::baseUrl()->redirect('network');
 843                 //NOTREACHED
 844         }
 845
 846         if ($item['deleted']) {
 847                 return '';
 848         }
 849
 850         $contact_id = 0;
 851
 852         // check if logged in user is either the author or owner of this item
 853         if (Session::getRemoteContactID($item['uid']) == $item['contact-id']) {
 854                 $contact_id = $item['contact-id'];
 855         }
 856
 857         if ((Session::getLocalUser() == $item['uid']) || $contact_id) {
 858                 // delete the item
 859                 Item::deleteForUser(['id' => $item['id']], Session::getLocalUser());
 860
 861                 item_redirect_after_action($item, $return);
 862                 //NOTREACHED
 863         } else {
 864                 Logger::warning('Permission denied.', ['local' => Session::getLocalUser(), 'uid' => $item['uid'], 'cid' => $contact_id]);
 865                 DI::sysmsg()->addNotice(DI::l10n()->t('Permission denied.'));
 866                 DI::baseUrl()->redirect('display/' . $item['guid']);
 867                 //NOTREACHED
 868         }
 869
 870         return '';
 871 }
 872
 873 function item_redirect_after_action(array $item, string $returnUrlHex)
 874 {
 875         $return_url = hex2bin($returnUrlHex);
 876
 877         // removes update_* from return_url to ignore Ajax refresh
 878         $return_url = str_replace('update_', '', $return_url);
 879
 880         // Check if delete a comment
 881         if ($item['gravity'] == Item::GRAVITY_COMMENT) {
 882                 if (!empty($item['parent'])) {
 883                         $parentitem = Post::selectFirstForUser(Session::getLocalUser(), ['guid'], ['id' => $item['parent']]);
 884                 }
 885
 886                 // Return to parent guid
 887                 if (!empty($parentitem)) {
 888                         DI::baseUrl()->redirect('display/' . $parentitem['guid']);
 889                         //NOTREACHED
 890                 } // In case something goes wrong
 891                 else {
 892                         DI::baseUrl()->redirect('network');
 893                         //NOTREACHED
 894                 }
 895         } else {
 896                 // if unknown location or deleting top level post called from display
 897                 if (empty($return_url) || strpos($return_url, 'display') !== false) {
 898                         DI::baseUrl()->redirect('network');
 899                         //NOTREACHED
 900                 } else {
 901                         DI::baseUrl()->redirect($return_url);
 902                         //NOTREACHED
 903                 }
 904         }
 905 }