mod/item.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2021, 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\Item as ItemHelper;
  33 use Friendica\Content\PageInfo;
  34 use Friendica\Content\Text\BBCode;
  35 use Friendica\Core\Hook;
  36 use Friendica\Core\Logger;
  37 use Friendica\Core\Protocol;
  38 use Friendica\Core\Session;
  39 use Friendica\Core\System;
  40 use Friendica\Core\Worker;
  41 use Friendica\Database\DBA;
  42 use Friendica\DI;
  43 use Friendica\Model\APContact;
  44 use Friendica\Model\Attach;
  45 use Friendica\Model\Contact;
  46 use Friendica\Model\Conversation;
  47 use Friendica\Model\FileTag;
  48 use Friendica\Model\Item;
  49 use Friendica\Model\ItemURI;
  50 use Friendica\Model\Notification;
  51 use Friendica\Model\Photo;
  52 use Friendica\Model\Post;
  53 use Friendica\Model\Tag;
  54 use Friendica\Model\User;
  55 use Friendica\Network\HTTPException;
  56 use Friendica\Object\EMail\ItemCCEMail;
  57 use Friendica\Protocol\Activity;
  58 use Friendica\Protocol\Diaspora;
  59 use Friendica\Security\Security;
  60 use Friendica\Util\DateTimeFormat;
  61 use Friendica\Util\ParseUrl;
  62 use Friendica\Worker\Delivery;
  63
  64 function item_post(App $a) {
  65         if (!Session::isAuthenticated()) {
  66                 throw new HTTPException\ForbiddenException();
  67         }
  68
  69         $uid = local_user();
  70
  71         if (!empty($_REQUEST['dropitems'])) {
  72                 $arr_drop = explode(',', $_REQUEST['dropitems']);
  73                 foreach ($arr_drop as $item) {
  74                         Item::deleteForUser(['id' => $item], $uid);
  75                 }
  76
  77                 $json = ['success' => 1];
  78                 System::jsonExit($json);
  79         }
  80
  81         Hook::callAll('post_local_start', $_REQUEST);
  82
  83         Logger::debug('postvars', ['_REQUEST' => $_REQUEST]);
  84
  85         $api_source = $_REQUEST['api_source'] ?? false;
  86
  87         $return_path = $_REQUEST['return'] ?? '';
  88         $preview = intval($_REQUEST['preview'] ?? 0);
  89
  90         /*
  91          * Check for doubly-submitted posts, and reject duplicates
  92          * Note that we have to ignore previews, otherwise nothing will post
  93          * after it's been previewed
  94          */
  95         if (!$preview && !empty($_REQUEST['post_id_random'])) {
  96                 if (!empty($_SESSION['post-random']) && $_SESSION['post-random'] == $_REQUEST['post_id_random']) {
  97                         Logger::info('item post: duplicate post');
  98                         item_post_return(DI::baseUrl(), $api_source, $return_path);
  99                 } else {
 100                         $_SESSION['post-random'] = $_REQUEST['post_id_random'];
 101                 }
 102         }
 103
 104         // Is this a reply to something?
 105         $parent_item_id = intval($_REQUEST['parent'] ?? 0);
 106         $thr_parent_uri = trim($_REQUEST['parent_uri'] ?? '');
 107
 108         $parent_item = null;
 109         $toplevel_item = null;
 110         $toplevel_item_id = 0;
 111         $toplevel_user_id = null;
 112
 113         $objecttype = null;
 114         $profile_uid = ($_REQUEST['profile_uid'] ?? 0) ?: local_user();
 115         $posttype = ($_REQUEST['post_type'] ?? '') ?: Item::PT_ARTICLE;
 116
 117         if ($parent_item_id || $thr_parent_uri) {
 118                 if ($parent_item_id) {
 119                         $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $parent_item_id]);
 120                 } elseif ($thr_parent_uri) {
 121                         $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
 122                 }
 123
 124                 // if this isn't the top-level parent of the conversation, find it
 125                 if (DBA::isResult($parent_item)) {
 126                         // The URI and the contact is taken from the direct parent which needn't to be the top parent
 127                         $thr_parent_uri = $parent_item['uri'];
 128                         $toplevel_item = $parent_item;
 129
 130                         if ($parent_item['gravity'] != GRAVITY_PARENT) {
 131                                 $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $toplevel_item['parent']]);
 132                         }
 133                 }
 134
 135                 if (!DBA::isResult($toplevel_item)) {
 136                         notice(DI::l10n()->t('Unable to locate original post.'));
 137                         if ($return_path) {
 138                                 DI::baseUrl()->redirect($return_path);
 139                         }
 140                         throw new HTTPException\NotFoundException(DI::l10n()->t('Unable to locate original post.'));
 141                 }
 142
 143                 // When commenting on a public post then store the post for the current user
 144                 // This enables interaction like starring and saving into folders
 145                 if ($toplevel_item['uid'] == 0) {
 146                         $stored = Item::storeForUserByUriId($toplevel_item['uri-id'], local_user());
 147                         Logger::info('Public item stored for user', ['uri-id' => $toplevel_item['uri-id'], 'uid' => $uid, 'stored' => $stored]);
 148                         if ($stored) {
 149                                 $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $stored]);
 150                         }
 151                 }
 152
 153                 $toplevel_item_id = $toplevel_item['id'];
 154                 $toplevel_user_id = $toplevel_item['uid'];
 155
 156                 $objecttype = Activity\ObjectType::COMMENT;
 157         }
 158
 159         if ($toplevel_item_id) {
 160                 Logger::info('mod_item: item_post', ['parent' => $toplevel_item_id]);
 161         }
 162
 163         $post_id     = intval($_REQUEST['post_id'] ?? 0);
 164         $app         = strip_tags($_REQUEST['source'] ?? '');
 165         $extid       = strip_tags($_REQUEST['extid'] ?? '');
 166         $object      = $_REQUEST['object'] ?? '';
 167
 168         // Don't use "defaults" here. It would turn 0 to 1
 169         if (!isset($_REQUEST['wall'])) {
 170                 $wall = 1;
 171         } else {
 172                 $wall = $_REQUEST['wall'];
 173         }
 174
 175         // Ensure that the user id in a thread always stay the same
 176         if (!is_null($toplevel_user_id) && in_array($toplevel_user_id, [local_user(), 0])) {
 177                 $profile_uid = $toplevel_user_id;
 178         }
 179
 180         // Allow commenting if it is an answer to a public post
 181         $allow_comment = local_user() && ($profile_uid == 0) && $toplevel_item_id && in_array($toplevel_item['network'], Protocol::FEDERATED);
 182
 183         // Now check that valid personal details have been provided
 184         if (!Security::canWriteToUserWall($profile_uid) && !$allow_comment) {
 185                 notice(DI::l10n()->t('Permission denied.'));
 186                 if ($return_path) {
 187                         DI::baseUrl()->redirect($return_path);
 188                 }
 189
 190                 throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
 191         }
 192
 193         // Init post instance
 194         $orig_post = null;
 195
 196         // is this an edited post?
 197         if ($post_id > 0) {
 198                 $orig_post = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 199         }
 200
 201         $user = User::getById($profile_uid, ['allow_cid', 'allow_gid', 'deny_cid', 'deny_gid']);
 202         if (!DBA::isResult($user) && !$toplevel_item_id) {
 203                 return 0;
 204         }
 205
 206         $categories = '';
 207         $postopts = '';
 208         $emailcc = '';
 209         $body = $_REQUEST['body'] ?? '';
 210         $has_attachment = $_REQUEST['has_attachment'] ?? 0;
 211
 212         // If we have a speparate attachment, we need to add it to the body.
 213         if (!empty($has_attachment)) {
 214                 $attachment_type  = $_REQUEST['attachment_type'] ??  '';
 215                 $attachment_title = $_REQUEST['attachment_title'] ?? '';
 216                 $attachment_text  = $_REQUEST['attachment_text'] ??  '';
 217
 218                 $attachment_url     = hex2bin($_REQUEST['attachment_url'] ??     '');
 219                 $attachment_img_src = hex2bin($_REQUEST['attachment_img_src'] ?? '');
 220
 221                 $attachment_img_width  = $_REQUEST['attachment_img_width'] ??  0;
 222                 $attachment_img_height = $_REQUEST['attachment_img_height'] ?? 0;
 223
 224                 // Fetch the basic attachment data
 225                 $attachment = ParseUrl::getSiteinfoCached($attachment_url);
 226                 unset($attachment['keywords']);
 227
 228                 // Overwrite the basic data with possible changes from the frontend
 229                 $attachment['type'] = $attachment_type;
 230                 $attachment['title'] = $attachment_title;
 231                 $attachment['text'] = $attachment_text;
 232                 $attachment['url'] = $attachment_url;
 233
 234                 if (!empty($attachment_img_src)) {
 235                         $attachment['images'] = [
 236                                 0 => [
 237                                         'src'    => $attachment_img_src,
 238                                         'width'  => $attachment_img_width,
 239                                         'height' => $attachment_img_height
 240                                 ]
 241                         ];
 242                 } else {
 243                         unset($attachment['images']);
 244                 }
 245
 246                 $att_bbcode = "\n" . PageInfo::getFooterFromData($attachment);
 247                 $body .= $att_bbcode;
 248         }
 249
 250         // Convert links with empty descriptions to links without an explicit description
 251         $body = preg_replace('#\[url=([^\]]*?)\]\[/url\]#ism', '[url]$1[/url]', $body);
 252
 253         if (!empty($orig_post)) {
 254                 $str_group_allow   = $orig_post['allow_gid'];
 255                 $str_contact_allow = $orig_post['allow_cid'];
 256                 $str_group_deny    = $orig_post['deny_gid'];
 257                 $str_contact_deny  = $orig_post['deny_cid'];
 258                 $location          = $orig_post['location'];
 259                 $coord             = $orig_post['coord'];
 260                 $verb              = $orig_post['verb'];
 261                 $objecttype        = $orig_post['object-type'];
 262                 $app               = $orig_post['app'];
 263                 $categories        = Post\Category::getTextByURIId($orig_post['uri-id'], $orig_post['uid']);
 264                 $title             = trim($_REQUEST['title'] ?? '');
 265                 $body              = trim($body);
 266                 $private           = $orig_post['private'];
 267                 $pubmail_enabled   = $orig_post['pubmail'];
 268                 $network           = $orig_post['network'];
 269                 $guid              = $orig_post['guid'];
 270                 $extid             = $orig_post['extid'];
 271         } else {
 272                 $aclFormatter = DI::aclFormatter();
 273                 $str_contact_allow = isset($_REQUEST['contact_allow']) ? $aclFormatter->toString($_REQUEST['contact_allow']) : $user['allow_cid'] ?? '';
 274                 $str_group_allow   = isset($_REQUEST['group_allow'])   ? $aclFormatter->toString($_REQUEST['group_allow'])   : $user['allow_gid'] ?? '';
 275                 $str_contact_deny  = isset($_REQUEST['contact_deny'])  ? $aclFormatter->toString($_REQUEST['contact_deny'])  : $user['deny_cid']  ?? '';
 276                 $str_group_deny    = isset($_REQUEST['group_deny'])    ? $aclFormatter->toString($_REQUEST['group_deny'])    : $user['deny_gid']  ?? '';
 277
 278                 $visibility = $_REQUEST['visibility'] ?? '';
 279                 if ($visibility === 'public') {
 280                         // The ACL selector introduced in version 2019.12 sends ACL input data even when the Public visibility is selected
 281                         $str_contact_allow = $str_group_allow = $str_contact_deny = $str_group_deny = '';
 282                 } else if ($visibility === 'custom') {
 283                         // Since we know from the visibility parameter the item should be private, we have to prevent the empty ACL
 284                         // case that would make it public. So we always append the author's contact id to the allowed contacts.
 285                         // See https://github.com/friendica/friendica/issues/9672
 286                         $str_contact_allow .= $aclFormatter->toString(Contact::getPublicIdByUserId($uid));
 287                 }
 288
 289                 $title             = trim($_REQUEST['title']    ?? '');
 290                 $location          = trim($_REQUEST['location'] ?? '');
 291                 $coord             = trim($_REQUEST['coord']    ?? '');
 292                 $verb              = trim($_REQUEST['verb']     ?? '');
 293                 $emailcc           = trim($_REQUEST['emailcc']  ?? '');
 294                 $body              = trim($body);
 295                 $network           = trim(($_REQUEST['network']  ?? '') ?: Protocol::DFRN);
 296                 $guid              = System::createUUID();
 297
 298                 $postopts = $_REQUEST['postopts'] ?? '';
 299
 300                 if (strlen($str_group_allow) || strlen($str_contact_allow) || strlen($str_group_deny) || strlen($str_contact_deny)) {
 301                         $private = Item::PRIVATE;
 302                 } elseif (DI::pConfig()->get($profile_uid, 'system', 'unlisted')) {
 303                         $private = Item::UNLISTED;
 304                 } else {
 305                         $private = Item::PUBLIC;
 306                 }
 307
 308                 // If this is a comment, set the permissions from the parent.
 309
 310                 if ($toplevel_item) {
 311                         // for non native networks use the network of the original post as network of the item
 312                         if (($toplevel_item['network'] != Protocol::DIASPORA)
 313                                 && ($toplevel_item['network'] != Protocol::OSTATUS)
 314                                 && ($network == "")) {
 315                                 $network = $toplevel_item['network'];
 316                         }
 317
 318                         $str_contact_allow = $toplevel_item['allow_cid'] ?? '';
 319                         $str_group_allow   = $toplevel_item['allow_gid'] ?? '';
 320                         $str_contact_deny  = $toplevel_item['deny_cid'] ?? '';
 321                         $str_group_deny    = $toplevel_item['deny_gid'] ?? '';
 322                         $private           = $toplevel_item['private'];
 323
 324                         $wall              = $toplevel_item['wall'];
 325                 }
 326
 327                 $pubmail_enabled = ($_REQUEST['pubmail_enable'] ?? false) && !$private;
 328
 329                 // if using the API, we won't see pubmail_enable - figure out if it should be set
 330                 if ($api_source && $profile_uid && $profile_uid == local_user() && !$private) {
 331                         if (function_exists('imap_open') && !DI::config()->get('system', 'imap_disabled')) {
 332                                 $pubmail_enabled = DBA::exists('mailacct', ["`uid` = ? AND `server` != ? AND `pubmail`", local_user(), '']);
 333                         }
 334                 }
 335
 336                 if (!strlen($body)) {
 337                         if ($preview) {
 338                                 System::jsonExit(['preview' => '']);
 339                         }
 340
 341                         notice(DI::l10n()->t('Empty post discarded.'));
 342                         if ($return_path) {
 343                                 DI::baseUrl()->redirect($return_path);
 344                         }
 345
 346                         throw new HTTPException\BadRequestException(DI::l10n()->t('Empty post discarded.'));
 347                 }
 348         }
 349
 350         if (!empty($categories)) {
 351                 // get the "fileas" tags for this post
 352                 $filedas = FileTag::fileToArray($categories);
 353         }
 354
 355         $categories = FileTag::listToFile(trim($_REQUEST['category'] ?? ''), 'category');
 356
 357         if (!empty($filedas) && is_array($filedas)) {
 358                 // append the fileas stuff to the new categories list
 359                 $categories .= FileTag::arrayToFile($filedas);
 360         }
 361
 362         // get contact info for poster
 363
 364         $author = null;
 365         $self   = false;
 366         $contact_id = 0;
 367
 368         if (local_user() && ((local_user() == $profile_uid) || $allow_comment)) {
 369                 $self = true;
 370                 $author = DBA::selectFirst('contact', [], ['uid' => local_user(), 'self' => true]);
 371         } elseif (!empty(Session::getRemoteContactID($profile_uid))) {
 372                 $author = DBA::selectFirst('contact', [], ['id' => Session::getRemoteContactID($profile_uid)]);
 373         }
 374
 375         if (DBA::isResult($author)) {
 376                 $contact_id = $author['id'];
 377         }
 378
 379         // get contact info for owner
 380         if ($profile_uid == local_user() || $allow_comment) {
 381                 $contact_record = $author ?: [];
 382         } else {
 383                 $contact_record = DBA::selectFirst('contact', [], ['uid' => $profile_uid, 'self' => true]) ?: [];
 384         }
 385
 386         // Look for any tags and linkify them
 387         $inform   = '';
 388         $private_forum = false;
 389         $private_id = null;
 390         $only_to_forum = false;
 391         $forum_contact = [];
 392
 393         $body = BBCode::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) use ($profile_uid, $network, $str_contact_allow, &$inform, &$private_forum, &$private_id, &$only_to_forum, &$forum_contact) {
 394                 $tags = BBCode::getTags($body);
 395
 396                 $tagged = [];
 397
 398                 foreach ($tags as $tag) {
 399                         $tag_type = substr($tag, 0, 1);
 400
 401                         if ($tag_type == Tag::TAG_CHARACTER[Tag::HASHTAG]) {
 402                                 continue;
 403                         }
 404
 405                         /* If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
 406                          * Robert Johnson should be first in the $tags array
 407                          */
 408                         foreach ($tagged as $nextTag) {
 409                                 if (stristr($nextTag, $tag . ' ')) {
 410                                         continue 2;
 411                                 }
 412                         }
 413
 414                         if ($success = ItemHelper::replaceTag($body, $inform, local_user() ? local_user() : $profile_uid, $tag, $network)) {
 415                                 if ($success['replaced']) {
 416                                         $tagged[] = $tag;
 417                                 }
 418                                 // When the forum is private or the forum is addressed with a "!" make the post private
 419                                 if (!empty($success['contact']['prv']) || ($tag_type == Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION])) {
 420                                         $private_forum = $success['contact']['prv'];
 421                                         $only_to_forum = ($tag_type == Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION]);
 422                                         $private_id = $success['contact']['id'];
 423                                         $forum_contact = $success['contact'];
 424                                 } elseif (!empty($success['contact']['forum']) && ($str_contact_allow == '<' . $success['contact']['id'] . '>')) {
 425                                         $private_forum = false;
 426                                         $only_to_forum = true;
 427                                         $private_id = $success['contact']['id'];
 428                                         $forum_contact = $success['contact'];
 429                                 }
 430                         }
 431                 }
 432
 433                 return $body;
 434         });
 435
 436         $original_contact_id = $contact_id;
 437
 438         if (!$toplevel_item_id && !empty($forum_contact) && ($private_forum || $only_to_forum)) {
 439                 // we tagged a forum in a top level post. Now we change the post
 440                 $private = $private_forum;
 441
 442                 if ($only_to_forum) {
 443                         $postopts = '';
 444                 }
 445
 446                 if ($private_forum || !APContact::getByURL($forum_contact['url'])) {
 447                         $str_group_allow = '';
 448                         $str_contact_deny = '';
 449                         $str_group_deny = '';
 450                         if ($private_forum) {
 451                                 $str_contact_allow = '<' . $private_id . '>';
 452                         } else {
 453                                 $str_contact_allow = '';
 454                         }
 455                         $contact_id = $private_id;
 456                         $contact_record = $forum_contact;
 457                         $_REQUEST['origin'] = false;
 458                         $wall = 0;
 459                 }
 460         }
 461
 462         /*
 463          * When a photo was uploaded into the message using the (profile wall) ajax
 464          * uploader, The permissions are initially set to disallow anybody but the
 465          * owner from seeing it. This is because the permissions may not yet have been
 466          * set for the post. If it's private, the photo permissions should be set
 467          * appropriately. But we didn't know the final permissions on the post until
 468          * now. So now we'll look for links of uploaded messages that are in the
 469          * post and set them to the same permissions as the post itself.
 470          */
 471
 472         $match = null;
 473
 474         if (!$preview && Photo::setPermissionFromBody($body, $uid, $original_contact_id, $str_contact_allow, $str_group_allow, $str_contact_deny, $str_group_deny)) {
 475                 $objecttype = Activity\ObjectType::IMAGE;
 476         }
 477
 478         /*
 479          * Next link in any attachment references we find in the post.
 480          */
 481         $match = [];
 482
 483         /// @todo these lines should be moved to Model/Attach (Once it exists)
 484         if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
 485                 $attaches = $match[1];
 486                 if (count($attaches)) {
 487                         foreach ($attaches as $attach) {
 488                                 // Ensure to only modify attachments that you own
 489                                 $srch = '<' . intval($original_contact_id) . '>';
 490
 491                                 $condition = ['allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
 492                                                 'id' => $attach];
 493                                 if (!Attach::exists($condition)) {
 494                                         continue;
 495                                 }
 496
 497                                 $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
 498                                                 'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
 499                                 $condition = ['id' => $attach];
 500                                 Attach::update($fields, $condition);
 501                         }
 502                 }
 503         }
 504
 505         // embedded bookmark or attachment in post? set bookmark flag
 506
 507         $data = BBCode::getAttachmentData($body);
 508         $match = [];
 509         if ((preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data["type"]))
 510                 && ($posttype != Item::PT_PERSONAL_NOTE)) {
 511                 $posttype = Item::PT_PAGE;
 512                 $objecttype =  Activity\ObjectType::BOOKMARK;
 513         }
 514
 515         $body = DI::bbCodeVideo()->transform($body);
 516
 517         $body = BBCode::scaleExternalImages($body);
 518
 519         // Setting the object type if not defined before
 520         if (!$objecttype) {
 521                 $objecttype = Activity\ObjectType::NOTE; // Default value
 522                 $objectdata = BBCode::getAttachedData($body);
 523
 524                 if ($objectdata["type"] == "link") {
 525                         $objecttype = Activity\ObjectType::BOOKMARK;
 526                 } elseif ($objectdata["type"] == "video") {
 527                         $objecttype = Activity\ObjectType::VIDEO;
 528                 } elseif ($objectdata["type"] == "photo") {
 529                         $objecttype = Activity\ObjectType::IMAGE;
 530                 }
 531
 532         }
 533
 534         $attachments = '';
 535         $match = [];
 536
 537         if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
 538                 foreach ($match[2] as $mtch) {
 539                         $fields = ['id', 'filename', 'filesize', 'filetype'];
 540                         $attachment = Attach::selectFirst($fields, ['id' => $mtch]);
 541                         if ($attachment !== false) {
 542                                 if (strlen($attachments)) {
 543                                         $attachments .= ',';
 544                                 }
 545                                 $attachments .= Post\Media::getAttachElement(DI::baseUrl() . '/attach/' . $attachment['id'],
 546                                         $attachment['filesize'], $attachment['filetype'], $attachment['filename'] ?? '');
 547                         }
 548                         $body = str_replace($match[1],'',$body);
 549                 }
 550         }
 551
 552         if (!strlen($verb)) {
 553                 $verb = Activity::POST;
 554         }
 555
 556         if ($network == "") {
 557                 $network = Protocol::DFRN;
 558         }
 559
 560         $gravity = ($toplevel_item_id ? GRAVITY_COMMENT : GRAVITY_PARENT);
 561
 562         // even if the post arrived via API we are considering that it
 563         // originated on this site by default for determining relayability.
 564
 565         // Don't use "defaults" here. It would turn 0 to 1
 566         if (!isset($_REQUEST['origin'])) {
 567                 $origin = 1;
 568         } else {
 569                 $origin = $_REQUEST['origin'];
 570         }
 571
 572         $uri = Item::newURI($api_source ? $profile_uid : $uid, $guid);
 573
 574         // Fallback so that we alway have a parent uri
 575         if (!$thr_parent_uri || !$toplevel_item_id) {
 576                 $thr_parent_uri = $uri;
 577         }
 578
 579         $datarray = [];
 580         $datarray['uid']           = $profile_uid;
 581         $datarray['wall']          = $wall;
 582         $datarray['gravity']       = $gravity;
 583         $datarray['network']       = $network;
 584         $datarray['contact-id']    = $contact_id;
 585         $datarray['owner-name']    = $contact_record['name'] ?? '';
 586         $datarray['owner-link']    = $contact_record['url'] ?? '';
 587         $datarray['owner-avatar']  = $contact_record['thumb'] ?? '';
 588         $datarray['owner-id']      = Contact::getIdForURL($datarray['owner-link']);
 589         $datarray['author-name']   = $author['name'];
 590         $datarray['author-link']   = $author['url'];
 591         $datarray['author-avatar'] = $author['thumb'];
 592         $datarray['author-id']     = Contact::getIdForURL($datarray['author-link']);
 593         $datarray['created']       = DateTimeFormat::utcNow();
 594         $datarray['edited']        = DateTimeFormat::utcNow();
 595         $datarray['commented']     = DateTimeFormat::utcNow();
 596         $datarray['received']      = DateTimeFormat::utcNow();
 597         $datarray['changed']       = DateTimeFormat::utcNow();
 598         $datarray['extid']         = $extid;
 599         $datarray['guid']          = $guid;
 600         $datarray['uri']           = $uri;
 601         $datarray['title']         = $title;
 602         $datarray['body']          = $body;
 603         $datarray['app']           = $app;
 604         $datarray['location']      = $location;
 605         $datarray['coord']         = $coord;
 606         $datarray['file']          = $categories;
 607         $datarray['inform']        = $inform;
 608         $datarray['verb']          = $verb;
 609         $datarray['post-type']     = $posttype;
 610         $datarray['object-type']   = $objecttype;
 611         $datarray['allow_cid']     = $str_contact_allow;
 612         $datarray['allow_gid']     = $str_group_allow;
 613         $datarray['deny_cid']      = $str_contact_deny;
 614         $datarray['deny_gid']      = $str_group_deny;
 615         $datarray['private']       = $private;
 616         $datarray['pubmail']       = $pubmail_enabled;
 617         $datarray['attach']        = $attachments;
 618
 619         $datarray['thr-parent']    = $thr_parent_uri;
 620
 621         $datarray['postopts']      = $postopts;
 622         $datarray['origin']        = $origin;
 623         $datarray['object']        = $object;
 624
 625         $datarray['uri-id']        = ItemURI::getIdByURI($datarray['uri']);
 626         $datarray['attachments']   = $_REQUEST['attachments'] ?? [];
 627
 628         /*
 629          * These fields are for the convenience of addons...
 630          * 'self' if true indicates the owner is posting on their own wall
 631          * If parent is 0 it is a top-level post.
 632          */
 633         $datarray['parent']        = $toplevel_item_id;
 634         $datarray['self']          = $self;
 635
 636         // This triggers posts via API and the mirror functions
 637         $datarray['api_source'] = $api_source;
 638
 639         // This field is for storing the raw conversation data
 640         $datarray['protocol'] = Conversation::PARCEL_DIRECT;
 641         $datarray['direction'] = Conversation::PUSH;
 642
 643         $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $datarray['thr-parent']]);
 644         if (DBA::isResult($conversation)) {
 645                 if ($conversation['conversation-uri'] != '') {
 646                         $datarray['conversation-uri'] = $conversation['conversation-uri'];
 647                 }
 648                 if ($conversation['conversation-href'] != '') {
 649                         $datarray['conversation-href'] = $conversation['conversation-href'];
 650                 }
 651         }
 652
 653         if ($orig_post) {
 654                 $datarray['edit'] = true;
 655         } else {
 656                 // If this was a share, add missing data here
 657                 $datarray = Item::addShareDataFromOriginal($datarray);
 658
 659                 $datarray['edit'] = false;
 660         }
 661
 662         // Check for hashtags in the body and repair or add hashtag links
 663         if ($preview || $orig_post) {
 664                 $datarray['body'] = Item::setHashtags($datarray['body']);
 665         }
 666
 667         // preview mode - prepare the body for display and send it via json
 668         if ($preview) {
 669                 // We set the datarray ID to -1 because in preview mode the dataray
 670                 // doesn't have an ID.
 671                 $datarray["id"] = -1;
 672                 $datarray["uri-id"] = -1;
 673                 $datarray["author-network"] = Protocol::DFRN;
 674
 675                 $o = conversation($a, [array_merge($contact_record, $datarray)], 'search', false, true);
 676
 677                 System::jsonExit(['preview' => $o]);
 678         }
 679
 680         Hook::callAll('post_local',$datarray);
 681
 682         if (!empty($datarray['cancel'])) {
 683                 Logger::info('mod_item: post cancelled by addon.');
 684                 if ($return_path) {
 685                         DI::baseUrl()->redirect($return_path);
 686                 }
 687
 688                 $json = ['cancel' => 1];
 689                 if (!empty($_REQUEST['jsreload'])) {
 690                         $json['reload'] = DI::baseUrl() . '/' . $_REQUEST['jsreload'];
 691                 }
 692
 693                 System::jsonExit($json);
 694         }
 695
 696         if ($orig_post) {
 697                 // Fill the cache field
 698                 // This could be done in Item::update as well - but we have to check for the existance of some fields.
 699                 Item::putInCache($datarray);
 700
 701                 $fields = [
 702                         'title' => $datarray['title'],
 703                         'body' => $datarray['body'],
 704                         'attach' => $datarray['attach'],
 705                         'file' => $datarray['file'],
 706                         'rendered-html' => $datarray['rendered-html'],
 707                         'rendered-hash' => $datarray['rendered-hash'],
 708                         'edited' => DateTimeFormat::utcNow(),
 709                         'changed' => DateTimeFormat::utcNow()];
 710
 711                 Item::update($fields, ['id' => $post_id]);
 712
 713                 if ($return_path) {
 714                         DI::baseUrl()->redirect($return_path);
 715                 }
 716
 717                 throw new HTTPException\OKException(DI::l10n()->t('Post updated.'));
 718         }
 719
 720         unset($datarray['edit']);
 721         unset($datarray['self']);
 722         unset($datarray['api_source']);
 723
 724         $post_id = Item::insert($datarray);
 725
 726         if (!$post_id) {
 727                 notice(DI::l10n()->t('Item wasn\'t stored.'));
 728                 if ($return_path) {
 729                         DI::baseUrl()->redirect($return_path);
 730                 }
 731
 732                 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item wasn\'t stored.'));
 733         }
 734
 735         $datarray = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 736
 737         if (!DBA::isResult($datarray)) {
 738                 Logger::error('Item couldn\'t be fetched.', ['post_id' => $post_id]);
 739                 if ($return_path) {
 740                         DI::baseUrl()->redirect($return_path);
 741                 }
 742
 743                 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item couldn\'t be fetched.'));
 744         }
 745
 746         Tag::storeFromBody($datarray['uri-id'], $datarray['body']);
 747
 748         if (!\Friendica\Content\Feature::isEnabled($uid, 'explicit_mentions') && ($datarray['gravity'] == GRAVITY_COMMENT)) {
 749                 Tag::createImplicitMentions($datarray['uri-id'], $datarray['thr-parent-id']);
 750         }
 751
 752         // These notifications are sent if someone else is commenting other your wall
 753         if ($contact_record != $author) {
 754                 if ($toplevel_item_id) {
 755                         notification([
 756                                 'type'  => Notification\Type::COMMENT,
 757                                 'otype' => Notification\ObjectType::ITEM,
 758                                 'verb'  => Activity::POST,
 759                                 'uid'   => $profile_uid,
 760                                 'cid'   => $datarray['author-id'],
 761                                 'item'  => $datarray,
 762                                 'link'  => DI::baseUrl() . '/display/' . urlencode($datarray['guid']),
 763                         ]);
 764                 } elseif (empty($forum_contact)) {
 765                         notification([
 766                                 'type'  => Notification\Type::WALL,
 767                                 'otype' => Notification\ObjectType::ITEM,
 768                                 'verb'  => Activity::POST,
 769                                 'uid'   => $profile_uid,
 770                                 'cid'   => $datarray['author-id'],
 771                                 'item'  => $datarray,
 772                                 'link'  => DI::baseUrl() . '/display/' . urlencode($datarray['guid']),
 773                         ]);
 774                 }
 775         }
 776
 777         Hook::callAll('post_local_end', $datarray);
 778
 779         if (strlen($emailcc) && $profile_uid == local_user()) {
 780                 $recipients = explode(',', $emailcc);
 781                 if (count($recipients)) {
 782                         foreach ($recipients as $recipient) {
 783                                 $address = trim($recipient);
 784                                 if (!strlen($address)) {
 785                                         continue;
 786                                 }
 787                                 DI::emailer()->send(new ItemCCEMail(DI::app(), DI::l10n(), DI::baseUrl(),
 788                                         $datarray, $address, $author['thumb'] ?? ''));
 789                         }
 790                 }
 791         }
 792
 793         // When we are doing some forum posting via ! we have to start the notifier manually.
 794         // These kind of posts don't initiate the notifier call in the item class.
 795         if ($only_to_forum) {
 796                 Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => false], "Notifier", Delivery::POST, (int)$datarray['uri-id'], (int)$datarray['uid']);
 797         }
 798
 799         Logger::info('post_complete');
 800
 801         if ($api_source) {
 802                 return $post_id;
 803         }
 804
 805         item_post_return(DI::baseUrl(), $api_source, $return_path);
 806         // NOTREACHED
 807 }
 808
 809 function item_post_return($baseurl, $api_source, $return_path)
 810 {
 811         if ($api_source) {
 812                 return;
 813         }
 814
 815         if ($return_path) {
 816                 DI::baseUrl()->redirect($return_path);
 817         }
 818
 819         $json = ['success' => 1];
 820         if (!empty($_REQUEST['jsreload'])) {
 821                 $json['reload'] = $baseurl . '/' . $_REQUEST['jsreload'];
 822         }
 823
 824         Logger::info('post_json', ['json' => $json]);
 825
 826         System::jsonExit($json);
 827 }
 828
 829 function item_content(App $a)
 830 {
 831         if (!Session::isAuthenticated()) {
 832                 throw new HTTPException\UnauthorizedException();
 833         }
 834
 835         $args = DI::args();
 836
 837         if (!$args->has(3)) {
 838                 throw new HTTPException\BadRequestException();
 839         }
 840
 841         $o = '';
 842         switch ($args->get(1)) {
 843                 case 'drop':
 844                         if (DI::mode()->isAjax()) {
 845                                 Item::deleteForUser(['id' => $args->get(2)], local_user());
 846                                 // ajax return: [<item id>, 0 (no perm) | <owner id>]
 847                                 System::jsonExit([intval($args->get(2)), local_user()]);
 848                         } else {
 849                                 if (!empty($args->get(3))) {
 850                                         $o = drop_item($args->get(2), $args->get(3));
 851                                 } else {
 852                                         $o = drop_item($args->get(2));
 853                                 }
 854                         }
 855                         break;
 856                 case 'block':
 857                         $item = Post::selectFirstForUser(local_user(), ['guid', 'author-id', 'parent', 'gravity'], ['id' => $args->get(2)]);
 858                         if (empty($item['author-id'])) {
 859                                 throw new HTTPException\NotFoundException('Item not found');
 860                         }
 861
 862                         Contact\User::setBlocked($item['author-id'], local_user(), true);
 863
 864                         if (DI::mode()->isAjax()) {
 865                                 // ajax return: [<item id>, 0 (no perm) | <owner id>]
 866                                 System::jsonExit([intval($args->get(2)), local_user()]);
 867                         } else {
 868                                 item_redirect_after_action($item, $args->get(3));
 869                         }
 870                         break;
 871         }
 872
 873         return $o;
 874 }
 875
 876 /**
 877  * @param int    $id
 878  * @param string $return
 879  * @return string
 880  * @throws HTTPException\InternalServerErrorException
 881  */
 882 function drop_item(int $id, string $return = '')
 883 {
 884         // locate item to be deleted
 885         $fields = ['id', 'uid', 'guid', 'contact-id', 'deleted', 'gravity', 'parent'];
 886         $item = Post::selectFirstForUser(local_user(), $fields, ['id' => $id]);
 887
 888         if (!DBA::isResult($item)) {
 889                 notice(DI::l10n()->t('Item not found.'));
 890                 DI::baseUrl()->redirect('network');
 891         }
 892
 893         if ($item['deleted']) {
 894                 return '';
 895         }
 896
 897         $contact_id = 0;
 898
 899         // check if logged in user is either the author or owner of this item
 900         if (Session::getRemoteContactID($item['uid']) == $item['contact-id']) {
 901                 $contact_id = $item['contact-id'];
 902         }
 903
 904         if ((local_user() == $item['uid']) || $contact_id) {
 905                 // delete the item
 906                 Item::deleteForUser(['id' => $item['id']], local_user());
 907
 908                 item_redirect_after_action($item, $return);
 909         } else {
 910                 notice(DI::l10n()->t('Permission denied.'));
 911                 DI::baseUrl()->redirect('display/' . $item['guid']);
 912                 //NOTREACHED
 913         }
 914
 915         return '';
 916 }
 917
 918 function item_redirect_after_action($item, $returnUrlHex)
 919 {
 920         $return_url = hex2bin($returnUrlHex);
 921
 922         // removes update_* from return_url to ignore Ajax refresh
 923         $return_url = str_replace("update_", "", $return_url);
 924
 925         // Check if delete a comment
 926         if ($item['gravity'] == GRAVITY_COMMENT) {
 927                 if (!empty($item['parent'])) {
 928                         $parentitem = Post::selectFirstForUser(local_user(), ['guid'], ['id' => $item['parent']]);
 929                 }
 930
 931                 // Return to parent guid
 932                 if (!empty($parentitem)) {
 933                         DI::baseUrl()->redirect('display/' . $parentitem['guid']);
 934                         //NOTREACHED
 935                 } // In case something goes wrong
 936                 else {
 937                         DI::baseUrl()->redirect('network');
 938                         //NOTREACHED
 939                 }
 940         } else {
 941                 // if unknown location or deleting top level post called from display
 942                 if (empty($return_url) || strpos($return_url, 'display') !== false) {
 943                         DI::baseUrl()->redirect('network');
 944                         //NOTREACHED
 945                 } else {
 946                         DI::baseUrl()->redirect($return_url);
 947                         //NOTREACHED
 948                 }
 949         }
 950 }