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\Group;
  47 use Friendica\Model\Item;
  48 use Friendica\Model\ItemURI;
  49 use Friendica\Model\Notification;
  50 use Friendica\Model\Photo;
  51 use Friendica\Model\Post;
  52 use Friendica\Model\Tag;
  53 use Friendica\Model\User;
  54 use Friendica\Network\HTTPException;
  55 use Friendica\Object\EMail\ItemCCEMail;
  56 use Friendica\Protocol\Activity;
  57 use Friendica\Security\Security;
  58 use Friendica\Util\DateTimeFormat;
  59 use Friendica\Util\ParseUrl;
  60 use Friendica\Worker\Delivery;
  61
  62 function item_post(App $a) {
  63         if (!Session::isAuthenticated()) {
  64                 throw new HTTPException\ForbiddenException();
  65         }
  66
  67         $uid = local_user();
  68
  69         if (!empty($_REQUEST['dropitems'])) {
  70                 $arr_drop = explode(',', $_REQUEST['dropitems']);
  71                 foreach ($arr_drop as $item) {
  72                         Item::deleteForUser(['id' => $item], $uid);
  73                 }
  74
  75                 $json = ['success' => 1];
  76                 System::jsonExit($json);
  77         }
  78
  79         Hook::callAll('post_local_start', $_REQUEST);
  80
  81         Logger::debug('postvars', ['_REQUEST' => $_REQUEST]);
  82
  83         $api_source = $_REQUEST['api_source'] ?? false;
  84
  85         $return_path = $_REQUEST['return'] ?? '';
  86         $preview = intval($_REQUEST['preview'] ?? 0);
  87
  88         /*
  89          * Check for doubly-submitted posts, and reject duplicates
  90          * Note that we have to ignore previews, otherwise nothing will post
  91          * after it's been previewed
  92          */
  93         if (!$preview && !empty($_REQUEST['post_id_random'])) {
  94                 if (!empty($_SESSION['post-random']) && $_SESSION['post-random'] == $_REQUEST['post_id_random']) {
  95                         Logger::info('item post: duplicate post');
  96                         item_post_return(DI::baseUrl(), $api_source, $return_path);
  97                 } else {
  98                         $_SESSION['post-random'] = $_REQUEST['post_id_random'];
  99                 }
 100         }
 101
 102         // Is this a reply to something?
 103         $parent_item_id = intval($_REQUEST['parent'] ?? 0);
 104         $thr_parent_uri = trim($_REQUEST['parent_uri'] ?? '');
 105
 106         $parent_item = null;
 107         $toplevel_item = null;
 108         $toplevel_item_id = 0;
 109         $toplevel_user_id = null;
 110
 111         $objecttype = null;
 112         $profile_uid = ($_REQUEST['profile_uid'] ?? 0) ?: local_user();
 113         $posttype = ($_REQUEST['post_type'] ?? '') ?: Item::PT_ARTICLE;
 114
 115         if ($parent_item_id || $thr_parent_uri) {
 116                 if ($parent_item_id) {
 117                         $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $parent_item_id]);
 118                 } elseif ($thr_parent_uri) {
 119                         $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
 120                 }
 121
 122                 // if this isn't the top-level parent of the conversation, find it
 123                 if (DBA::isResult($parent_item)) {
 124                         // The URI and the contact is taken from the direct parent which needn't to be the top parent
 125                         $thr_parent_uri = $parent_item['uri'];
 126                         $toplevel_item = $parent_item;
 127
 128                         if ($parent_item['gravity'] != GRAVITY_PARENT) {
 129                                 $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $toplevel_item['parent']]);
 130                         }
 131                 }
 132
 133                 if (!DBA::isResult($toplevel_item)) {
 134                         notice(DI::l10n()->t('Unable to locate original post.'));
 135                         if ($return_path) {
 136                                 DI::baseUrl()->redirect($return_path);
 137                         }
 138                         throw new HTTPException\NotFoundException(DI::l10n()->t('Unable to locate original post.'));
 139                 }
 140
 141                 // When commenting on a public post then store the post for the current user
 142                 // This enables interaction like starring and saving into folders
 143                 if ($toplevel_item['uid'] == 0) {
 144                         $stored = Item::storeForUserByUriId($toplevel_item['uri-id'], local_user());
 145                         Logger::info('Public item stored for user', ['uri-id' => $toplevel_item['uri-id'], 'uid' => $uid, 'stored' => $stored]);
 146                         if ($stored) {
 147                                 $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $stored]);
 148                         }
 149                 }
 150
 151                 $toplevel_item_id = $toplevel_item['id'];
 152                 $toplevel_user_id = $toplevel_item['uid'];
 153
 154                 $objecttype = Activity\ObjectType::COMMENT;
 155         }
 156
 157         if ($toplevel_item_id) {
 158                 Logger::info('mod_item: item_post', ['parent' => $toplevel_item_id]);
 159         }
 160
 161         $post_id     = intval($_REQUEST['post_id'] ?? 0);
 162         $app         = strip_tags($_REQUEST['source'] ?? '');
 163         $extid       = strip_tags($_REQUEST['extid'] ?? '');
 164         $object      = $_REQUEST['object'] ?? '';
 165
 166         // Don't use "defaults" here. It would turn 0 to 1
 167         if (!isset($_REQUEST['wall'])) {
 168                 $wall = 1;
 169         } else {
 170                 $wall = $_REQUEST['wall'];
 171         }
 172
 173         // Ensure that the user id in a thread always stay the same
 174         if (!is_null($toplevel_user_id) && in_array($toplevel_user_id, [local_user(), 0])) {
 175                 $profile_uid = $toplevel_user_id;
 176         }
 177
 178         // Allow commenting if it is an answer to a public post
 179         $allow_comment = local_user() && $toplevel_item_id && in_array($toplevel_item['private'], [Item::PUBLIC, Item::UNLISTED]) && in_array($toplevel_item['network'], Protocol::FEDERATED);
 180
 181         // Now check that valid personal details have been provided
 182         if (!Security::canWriteToUserWall($profile_uid) && !$allow_comment) {
 183                 Logger::notice('Permission denied.', ['local' => local_user(), 'profile_uid' => $profile_uid, 'toplevel_item_id' => $toplevel_item_id, 'network' => $toplevel_item['network']]);
 184                 notice(DI::l10n()->t('Permission denied.'));
 185                 if ($return_path) {
 186                         DI::baseUrl()->redirect($return_path);
 187                 }
 188
 189                 throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
 190         }
 191
 192         // Init post instance
 193         $orig_post = null;
 194
 195         // is this an edited post?
 196         if ($post_id > 0) {
 197                 $orig_post = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 198         }
 199
 200         $user = User::getById($profile_uid, ['allow_cid', 'allow_gid', 'deny_cid', 'deny_gid']);
 201         if (!DBA::isResult($user) && !$toplevel_item_id) {
 202                 return 0;
 203         }
 204
 205         $categories = '';
 206         $postopts = '';
 207         $emailcc = '';
 208         $body = $_REQUEST['body'] ?? '';
 209         $has_attachment = $_REQUEST['has_attachment'] ?? 0;
 210
 211         // If we have a speparate attachment, we need to add it to the body.
 212         if (!empty($has_attachment)) {
 213                 $attachment_type  = $_REQUEST['attachment_type'] ??  '';
 214                 $attachment_title = $_REQUEST['attachment_title'] ?? '';
 215                 $attachment_text  = $_REQUEST['attachment_text'] ??  '';
 216
 217                 $attachment_url     = hex2bin($_REQUEST['attachment_url'] ??     '');
 218                 $attachment_img_src = hex2bin($_REQUEST['attachment_img_src'] ?? '');
 219
 220                 $attachment_img_width  = $_REQUEST['attachment_img_width'] ??  0;
 221                 $attachment_img_height = $_REQUEST['attachment_img_height'] ?? 0;
 222
 223                 // Fetch the basic attachment data
 224                 $attachment = ParseUrl::getSiteinfoCached($attachment_url);
 225                 unset($attachment['keywords']);
 226
 227                 // Overwrite the basic data with possible changes from the frontend
 228                 $attachment['type'] = $attachment_type;
 229                 $attachment['title'] = $attachment_title;
 230                 $attachment['text'] = $attachment_text;
 231                 $attachment['url'] = $attachment_url;
 232
 233                 if (!empty($attachment_img_src)) {
 234                         $attachment['images'] = [
 235                                 0 => [
 236                                         'src'    => $attachment_img_src,
 237                                         'width'  => $attachment_img_width,
 238                                         'height' => $attachment_img_height
 239                                 ]
 240                         ];
 241                 } else {
 242                         unset($attachment['images']);
 243                 }
 244
 245                 $att_bbcode = "\n" . PageInfo::getFooterFromData($attachment);
 246                 $body .= $att_bbcode;
 247         }
 248
 249         // Convert links with empty descriptions to links without an explicit description
 250         $body = preg_replace('#\[url=([^\]]*?)\]\[/url\]#ism', '[url]$1[/url]', $body);
 251
 252         if (!empty($orig_post)) {
 253                 $str_group_allow   = $orig_post['allow_gid'];
 254                 $str_contact_allow = $orig_post['allow_cid'];
 255                 $str_group_deny    = $orig_post['deny_gid'];
 256                 $str_contact_deny  = $orig_post['deny_cid'];
 257                 $location          = $orig_post['location'];
 258                 $coord             = $orig_post['coord'];
 259                 $verb              = $orig_post['verb'];
 260                 $objecttype        = $orig_post['object-type'];
 261                 $app               = $orig_post['app'];
 262                 $categories        = Post\Category::getTextByURIId($orig_post['uri-id'], $orig_post['uid']);
 263                 $title             = trim($_REQUEST['title'] ?? '');
 264                 $body              = trim($body);
 265                 $private           = $orig_post['private'];
 266                 $pubmail_enabled   = $orig_post['pubmail'];
 267                 $network           = $orig_post['network'];
 268                 $guid              = $orig_post['guid'];
 269                 $extid             = $orig_post['extid'];
 270         } else {
 271                 $aclFormatter = DI::aclFormatter();
 272                 $str_contact_allow = isset($_REQUEST['contact_allow']) ? $aclFormatter->toString($_REQUEST['contact_allow']) : $user['allow_cid'] ?? '';
 273                 $str_group_allow   = isset($_REQUEST['group_allow'])   ? $aclFormatter->toString($_REQUEST['group_allow'])   : $user['allow_gid'] ?? '';
 274                 $str_contact_deny  = isset($_REQUEST['contact_deny'])  ? $aclFormatter->toString($_REQUEST['contact_deny'])  : $user['deny_cid']  ?? '';
 275                 $str_group_deny    = isset($_REQUEST['group_deny'])    ? $aclFormatter->toString($_REQUEST['group_deny'])    : $user['deny_gid']  ?? '';
 276
 277                 $visibility = $_REQUEST['visibility'] ?? '';
 278                 if ($visibility === 'public') {
 279                         // The ACL selector introduced in version 2019.12 sends ACL input data even when the Public visibility is selected
 280                         $str_contact_allow = $str_group_allow = $str_contact_deny = $str_group_deny = '';
 281                 } else if ($visibility === 'custom') {
 282                         // Since we know from the visibility parameter the item should be private, we have to prevent the empty ACL
 283                         // case that would make it public. So we always append the author's contact id to the allowed contacts.
 284                         // See https://github.com/friendica/friendica/issues/9672
 285                         $str_contact_allow .= $aclFormatter->toString(Contact::getPublicIdByUserId($uid));
 286                 }
 287
 288                 $title             = trim($_REQUEST['title']    ?? '');
 289                 $location          = trim($_REQUEST['location'] ?? '');
 290                 $coord             = trim($_REQUEST['coord']    ?? '');
 291                 $verb              = trim($_REQUEST['verb']     ?? '');
 292                 $emailcc           = trim($_REQUEST['emailcc']  ?? '');
 293                 $body              = trim($body);
 294                 $network           = trim(($_REQUEST['network']  ?? '') ?: Protocol::DFRN);
 295                 $guid              = System::createUUID();
 296
 297                 $postopts = $_REQUEST['postopts'] ?? '';
 298
 299                 if (strlen($str_group_allow) || strlen($str_contact_allow) || strlen($str_group_deny) || strlen($str_contact_deny)) {
 300                         $private = Item::PRIVATE;
 301                 } elseif (DI::pConfig()->get($profile_uid, 'system', 'unlisted')) {
 302                         $private = Item::UNLISTED;
 303                 } else {
 304                         $private = Item::PUBLIC;
 305                 }
 306
 307                 // If this is a comment, set the permissions from the parent.
 308
 309                 if ($toplevel_item) {
 310                         // for non native networks use the network of the original post as network of the item
 311                         if (($toplevel_item['network'] != Protocol::DIASPORA)
 312                                 && ($toplevel_item['network'] != Protocol::OSTATUS)
 313                                 && ($network == "")) {
 314                                 $network = $toplevel_item['network'];
 315                         }
 316
 317                         $str_contact_allow = $toplevel_item['allow_cid'] ?? '';
 318                         $str_group_allow   = $toplevel_item['allow_gid'] ?? '';
 319                         $str_contact_deny  = $toplevel_item['deny_cid'] ?? '';
 320                         $str_group_deny    = $toplevel_item['deny_gid'] ?? '';
 321                         $private           = $toplevel_item['private'];
 322
 323                         $wall              = $toplevel_item['wall'];
 324                 }
 325
 326                 $pubmail_enabled = ($_REQUEST['pubmail_enable'] ?? false) && !$private;
 327
 328                 // if using the API, we won't see pubmail_enable - figure out if it should be set
 329                 if ($api_source && $profile_uid && $profile_uid == local_user() && !$private) {
 330                         if (function_exists('imap_open') && !DI::config()->get('system', 'imap_disabled')) {
 331                                 $pubmail_enabled = DBA::exists('mailacct', ["`uid` = ? AND `server` != ? AND `pubmail`", local_user(), '']);
 332                         }
 333                 }
 334
 335                 if (!strlen($body)) {
 336                         if ($preview) {
 337                                 System::jsonExit(['preview' => '']);
 338                         }
 339
 340                         notice(DI::l10n()->t('Empty post discarded.'));
 341                         if ($return_path) {
 342                                 DI::baseUrl()->redirect($return_path);
 343                         }
 344
 345                         throw new HTTPException\BadRequestException(DI::l10n()->t('Empty post discarded.'));
 346                 }
 347         }
 348
 349         if (!empty($categories)) {
 350                 // get the "fileas" tags for this post
 351                 $filedas = FileTag::fileToArray($categories);
 352         }
 353
 354         $list_array = explode(',', trim($_REQUEST['category'] ?? ''));
 355         $categories = FileTag::arrayToFile($list_array, '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         $forum_contact = [];
 392
 393         // Personal notes must never be altered to a forum post.
 394         if ($posttype != Item::PT_PERSONAL_NOTE) {
 395                 // Convert mentions in the body to a unified format
 396                 $body = BBCode::setMentions($body, local_user() ? local_user() : $profile_uid, $network);
 397
 398                 // Search for forum mentions
 399                 foreach (Tag::getFromBody($body, Tag::TAG_CHARACTER[Tag::MENTION] . Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION]) as $tag) {
 400                         $contact = Contact::getByURLForUser($tag[2], $profile_uid);
 401                         if (!empty($inform)) {
 402                                 $inform .= ',';
 403                         }
 404                         $inform .= 'cid:' . $contact['id'];
 405
 406                         if ($toplevel_item_id || empty($contact['cid']) || ($contact['contact-type'] != Contact::TYPE_COMMUNITY)) {
 407                                 continue;
 408                         }
 409
 410                         if (!empty($contact['prv']) || ($tag[1] == Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION])) {
 411                                 $private_forum = $contact['prv'];
 412                                 $only_to_forum = ($tag[1] == Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION]);
 413                                 $private_id = $contact['id'];
 414                                 $forum_contact = $contact;
 415                                 Logger::info('Private forum or exclusive mention', ['url' => $tag[2], 'mention' => $tag[1]]);
 416                         } elseif ($str_contact_allow == '<' . $contact['id'] . '>') {
 417                                 $private_forum = false;
 418                                 $only_to_forum = true;
 419                                 $private_id = $contact['id'];
 420                                 $forum_contact = $contact;
 421                                 Logger::info('Public forum', ['url' => $tag[2], 'mention' => $tag[1]]);
 422                         } else {
 423                                 Logger::info('Post with forum mention will not be converted to a forum post', ['url' => $tag[2], 'mention' => $tag[1]]);
 424                         }
 425                 }
 426                 Logger::info('Got inform', ['inform' => $inform]);
 427         }
 428
 429         $original_contact_id = $contact_id;
 430
 431         if (!$toplevel_item_id && !empty($forum_contact) && ($private_forum || $only_to_forum)) {
 432                 // we tagged a forum in a top level post. Now we change the post
 433                 $private = $private_forum ? Item::PRIVATE : Item::UNLISTED;
 434
 435                 if ($only_to_forum) {
 436                         $postopts = '';
 437                 }
 438
 439                 $str_contact_deny  = '';
 440                 $str_group_deny    = '';
 441
 442                 if ($private_forum) {
 443                         $str_contact_allow = '<' . $private_id . '>';
 444                         $str_group_allow   = '<' . Group::getIdForForum($forum_contact['id']) . '>';
 445                 } else {
 446                         $str_contact_allow = '';
 447                         $str_group_allow   = '';
 448                 }
 449         }
 450
 451         /*
 452          * When a photo was uploaded into the message using the (profile wall) ajax
 453          * uploader, The permissions are initially set to disallow anybody but the
 454          * owner from seeing it. This is because the permissions may not yet have been
 455          * set for the post. If it's private, the photo permissions should be set
 456          * appropriately. But we didn't know the final permissions on the post until
 457          * now. So now we'll look for links of uploaded messages that are in the
 458          * post and set them to the same permissions as the post itself.
 459          */
 460
 461         $match = null;
 462
 463         if (!$preview && Photo::setPermissionFromBody($body, $uid, $original_contact_id, $str_contact_allow, $str_group_allow, $str_contact_deny, $str_group_deny)) {
 464                 $objecttype = Activity\ObjectType::IMAGE;
 465         }
 466
 467         /*
 468          * Next link in any attachment references we find in the post.
 469          */
 470         $match = [];
 471
 472         /// @todo these lines should be moved to Model/Attach (Once it exists)
 473         if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
 474                 $attaches = $match[1];
 475                 if (count($attaches)) {
 476                         foreach ($attaches as $attach) {
 477                                 // Ensure to only modify attachments that you own
 478                                 $srch = '<' . intval($original_contact_id) . '>';
 479
 480                                 $condition = ['allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
 481                                                 'id' => $attach];
 482                                 if (!Attach::exists($condition)) {
 483                                         continue;
 484                                 }
 485
 486                                 $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
 487                                                 'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
 488                                 $condition = ['id' => $attach];
 489                                 Attach::update($fields, $condition);
 490                         }
 491                 }
 492         }
 493
 494         // embedded bookmark or attachment in post? set bookmark flag
 495
 496         $data = BBCode::getAttachmentData($body);
 497         $match = [];
 498         if ((preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data["type"]))
 499                 && ($posttype != Item::PT_PERSONAL_NOTE)) {
 500                 $posttype = Item::PT_PAGE;
 501                 $objecttype =  Activity\ObjectType::BOOKMARK;
 502         }
 503
 504         $body = DI::bbCodeVideo()->transform($body);
 505
 506         $body = BBCode::scaleExternalImages($body);
 507
 508         // Setting the object type if not defined before
 509         if (!$objecttype) {
 510                 $objecttype = Activity\ObjectType::NOTE; // Default value
 511                 $objectdata = BBCode::getAttachedData($body);
 512
 513                 if ($objectdata["type"] == "link") {
 514                         $objecttype = Activity\ObjectType::BOOKMARK;
 515                 } elseif ($objectdata["type"] == "video") {
 516                         $objecttype = Activity\ObjectType::VIDEO;
 517                 } elseif ($objectdata["type"] == "photo") {
 518                         $objecttype = Activity\ObjectType::IMAGE;
 519                 }
 520
 521         }
 522
 523         $attachments = '';
 524         $match = [];
 525
 526         if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
 527                 foreach ($match[2] as $mtch) {
 528                         $fields = ['id', 'filename', 'filesize', 'filetype'];
 529                         $attachment = Attach::selectFirst($fields, ['id' => $mtch]);
 530                         if ($attachment !== false) {
 531                                 if (strlen($attachments)) {
 532                                         $attachments .= ',';
 533                                 }
 534                                 $attachments .= Post\Media::getAttachElement(DI::baseUrl() . '/attach/' . $attachment['id'],
 535                                         $attachment['filesize'], $attachment['filetype'], $attachment['filename'] ?? '');
 536                         }
 537                         $body = str_replace($match[1],'',$body);
 538                 }
 539         }
 540
 541         if (!strlen($verb)) {
 542                 $verb = Activity::POST;
 543         }
 544
 545         if ($network == "") {
 546                 $network = Protocol::DFRN;
 547         }
 548
 549         $gravity = ($toplevel_item_id ? GRAVITY_COMMENT : GRAVITY_PARENT);
 550
 551         // even if the post arrived via API we are considering that it
 552         // originated on this site by default for determining relayability.
 553
 554         // Don't use "defaults" here. It would turn 0 to 1
 555         if (!isset($_REQUEST['origin'])) {
 556                 $origin = 1;
 557         } else {
 558                 $origin = $_REQUEST['origin'];
 559         }
 560
 561         $uri = Item::newURI($api_source ? $profile_uid : $uid, $guid);
 562
 563         // Fallback so that we alway have a parent uri
 564         if (!$thr_parent_uri || !$toplevel_item_id) {
 565                 $thr_parent_uri = $uri;
 566         }
 567
 568         $datarray = [];
 569         $datarray['uid']           = $profile_uid;
 570         $datarray['wall']          = $wall;
 571         $datarray['gravity']       = $gravity;
 572         $datarray['network']       = $network;
 573         $datarray['contact-id']    = $contact_id;
 574         $datarray['owner-name']    = $contact_record['name'] ?? '';
 575         $datarray['owner-link']    = $contact_record['url'] ?? '';
 576         $datarray['owner-avatar']  = $contact_record['thumb'] ?? '';
 577         $datarray['owner-id']      = Contact::getIdForURL($datarray['owner-link']);
 578         $datarray['author-name']   = $author['name'];
 579         $datarray['author-link']   = $author['url'];
 580         $datarray['author-avatar'] = $author['thumb'];
 581         $datarray['author-id']     = Contact::getIdForURL($datarray['author-link']);
 582         $datarray['created']       = DateTimeFormat::utcNow();
 583         $datarray['edited']        = DateTimeFormat::utcNow();
 584         $datarray['commented']     = DateTimeFormat::utcNow();
 585         $datarray['received']      = DateTimeFormat::utcNow();
 586         $datarray['changed']       = DateTimeFormat::utcNow();
 587         $datarray['extid']         = $extid;
 588         $datarray['guid']          = $guid;
 589         $datarray['uri']           = $uri;
 590         $datarray['title']         = $title;
 591         $datarray['body']          = $body;
 592         $datarray['app']           = $app;
 593         $datarray['location']      = $location;
 594         $datarray['coord']         = $coord;
 595         $datarray['file']          = $categories;
 596         $datarray['inform']        = $inform;
 597         $datarray['verb']          = $verb;
 598         $datarray['post-type']     = $posttype;
 599         $datarray['object-type']   = $objecttype;
 600         $datarray['allow_cid']     = $str_contact_allow;
 601         $datarray['allow_gid']     = $str_group_allow;
 602         $datarray['deny_cid']      = $str_contact_deny;
 603         $datarray['deny_gid']      = $str_group_deny;
 604         $datarray['private']       = $private;
 605         $datarray['pubmail']       = $pubmail_enabled;
 606         $datarray['attach']        = $attachments;
 607
 608         $datarray['thr-parent']    = $thr_parent_uri;
 609
 610         $datarray['postopts']      = $postopts;
 611         $datarray['origin']        = $origin;
 612         $datarray['object']        = $object;
 613
 614         $datarray['attachments']   = $_REQUEST['attachments'] ?? [];
 615
 616         /*
 617          * These fields are for the convenience of addons...
 618          * 'self' if true indicates the owner is posting on their own wall
 619          * If parent is 0 it is a top-level post.
 620          */
 621         $datarray['parent']        = $toplevel_item_id;
 622         $datarray['self']          = $self;
 623
 624         // This triggers posts via API and the mirror functions
 625         $datarray['api_source'] = $api_source;
 626
 627         // This field is for storing the raw conversation data
 628         $datarray['protocol'] = Conversation::PARCEL_DIRECT;
 629         $datarray['direction'] = Conversation::PUSH;
 630
 631         $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $datarray['thr-parent']]);
 632         if (DBA::isResult($conversation)) {
 633                 if ($conversation['conversation-uri'] != '') {
 634                         $datarray['conversation-uri'] = $conversation['conversation-uri'];
 635                 }
 636                 if ($conversation['conversation-href'] != '') {
 637                         $datarray['conversation-href'] = $conversation['conversation-href'];
 638                 }
 639         }
 640
 641         if ($orig_post) {
 642                 $datarray['edit'] = true;
 643         } else {
 644                 // If this was a share, add missing data here
 645                 $datarray = Item::addShareDataFromOriginal($datarray);
 646
 647                 $datarray['edit'] = false;
 648         }
 649
 650         // Check for hashtags in the body and repair or add hashtag links
 651         if ($preview || $orig_post) {
 652                 $datarray['body'] = Item::setHashtags($datarray['body']);
 653         }
 654
 655         // preview mode - prepare the body for display and send it via json
 656         if ($preview) {
 657                 // We set the datarray ID to -1 because in preview mode the dataray
 658                 // doesn't have an ID.
 659                 $datarray["id"] = -1;
 660                 $datarray["uri-id"] = -1;
 661                 $datarray["author-network"] = Protocol::DFRN;
 662
 663                 $o = DI::conversation()->create([array_merge($contact_record, $datarray)], 'search', false, true);
 664
 665                 System::jsonExit(['preview' => $o]);
 666         }
 667
 668         Hook::callAll('post_local',$datarray);
 669
 670         if (!empty($_REQUEST['scheduled_at'])) {
 671                 $scheduled_at = DateTimeFormat::convert($_REQUEST['scheduled_at'], 'UTC', $a->getTimeZone());
 672                 if ($scheduled_at > DateTimeFormat::utcNow()) {
 673                         unset($datarray['created']);
 674                         unset($datarray['edited']);
 675                         unset($datarray['commented']);
 676                         unset($datarray['received']);
 677                         unset($datarray['changed']);
 678                         unset($datarray['edit']);
 679                         unset($datarray['self']);
 680                         unset($datarray['api_source']);
 681
 682                         Post\Delayed::add($datarray['uri'], $datarray, PRIORITY_HIGH, Post\Delayed::PREPARED_NO_HOOK, $scheduled_at);
 683                         item_post_return(DI::baseUrl(), $api_source, $return_path);
 684                 }
 685         }
 686
 687         if (!empty($datarray['cancel'])) {
 688                 Logger::info('mod_item: post cancelled by addon.');
 689                 if ($return_path) {
 690                         DI::baseUrl()->redirect($return_path);
 691                 }
 692
 693                 $json = ['cancel' => 1];
 694                 if (!empty($_REQUEST['jsreload'])) {
 695                         $json['reload'] = DI::baseUrl() . '/' . $_REQUEST['jsreload'];
 696                 }
 697
 698                 System::jsonExit($json);
 699         }
 700
 701         $datarray['uri-id'] = ItemURI::getIdByURI($datarray['uri']);
 702
 703         if ($orig_post) {
 704                 // Fill the cache field
 705                 // This could be done in Item::update as well - but we have to check for the existance of some fields.
 706                 Item::putInCache($datarray);
 707
 708                 $fields = [
 709                         'title' => $datarray['title'],
 710                         'body' => $datarray['body'],
 711                         'attach' => $datarray['attach'],
 712                         'file' => $datarray['file'],
 713                         'rendered-html' => $datarray['rendered-html'],
 714                         'rendered-hash' => $datarray['rendered-hash'],
 715                         'edited' => DateTimeFormat::utcNow(),
 716                         'changed' => DateTimeFormat::utcNow()];
 717
 718                 Item::update($fields, ['id' => $post_id]);
 719
 720                 if ($return_path) {
 721                         DI::baseUrl()->redirect($return_path);
 722                 }
 723
 724                 throw new HTTPException\OKException(DI::l10n()->t('Post updated.'));
 725         }
 726
 727         unset($datarray['edit']);
 728         unset($datarray['self']);
 729         unset($datarray['api_source']);
 730
 731         $post_id = Item::insert($datarray);
 732
 733         if (!$post_id) {
 734                 notice(DI::l10n()->t('Item wasn\'t stored.'));
 735                 if ($return_path) {
 736                         DI::baseUrl()->redirect($return_path);
 737                 }
 738
 739                 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item wasn\'t stored.'));
 740         }
 741
 742         $datarray = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 743
 744         if (!DBA::isResult($datarray)) {
 745                 Logger::error('Item couldn\'t be fetched.', ['post_id' => $post_id]);
 746                 if ($return_path) {
 747                         DI::baseUrl()->redirect($return_path);
 748                 }
 749
 750                 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item couldn\'t be fetched.'));
 751         }
 752
 753         Tag::storeFromBody($datarray['uri-id'], $datarray['body']);
 754
 755         if (!\Friendica\Content\Feature::isEnabled($uid, 'explicit_mentions') && ($datarray['gravity'] == GRAVITY_COMMENT)) {
 756                 Tag::createImplicitMentions($datarray['uri-id'], $datarray['thr-parent-id']);
 757         }
 758
 759         // These notifications are sent if someone else is commenting other your wall
 760         if ($contact_record != $author) {
 761                 if ($toplevel_item_id) {
 762                         DI::notify()->createFromArray([
 763                                 'type'  => Notification\Type::COMMENT,
 764                                 'otype' => Notification\ObjectType::ITEM,
 765                                 'verb'  => Activity::POST,
 766                                 'uid'   => $profile_uid,
 767                                 'cid'   => $datarray['author-id'],
 768                                 'item'  => $datarray,
 769                                 'link'  => DI::baseUrl() . '/display/' . urlencode($datarray['guid']),
 770                         ]);
 771                 } elseif (empty($forum_contact)) {
 772                         DI::notify()->createFromArray([
 773                                 'type'  => Notification\Type::WALL,
 774                                 'otype' => Notification\ObjectType::ITEM,
 775                                 'verb'  => Activity::POST,
 776                                 'uid'   => $profile_uid,
 777                                 'cid'   => $datarray['author-id'],
 778                                 'item'  => $datarray,
 779                                 'link'  => DI::baseUrl() . '/display/' . urlencode($datarray['guid']),
 780                         ]);
 781                 }
 782         }
 783
 784         Hook::callAll('post_local_end', $datarray);
 785
 786         if (strlen($emailcc) && $profile_uid == local_user()) {
 787                 $recipients = explode(',', $emailcc);
 788                 if (count($recipients)) {
 789                         foreach ($recipients as $recipient) {
 790                                 $address = trim($recipient);
 791                                 if (!strlen($address)) {
 792                                         continue;
 793                                 }
 794                                 DI::emailer()->send(new ItemCCEMail(DI::app(), DI::l10n(), DI::baseUrl(),
 795                                         $datarray, $address, $author['thumb'] ?? ''));
 796                         }
 797                 }
 798         }
 799
 800         // When we are doing some forum posting via ! we have to start the notifier manually.
 801         // These kind of posts don't initiate the notifier call in the item class.
 802         if ($only_to_forum) {
 803                 Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => false], "Notifier", Delivery::POST, (int)$datarray['uri-id'], (int)$datarray['uid']);
 804         }
 805
 806         Logger::info('post_complete');
 807
 808         if ($api_source) {
 809                 return $post_id;
 810         }
 811
 812         item_post_return(DI::baseUrl(), $api_source, $return_path);
 813         // NOTREACHED
 814 }
 815
 816 function item_post_return($baseurl, $api_source, $return_path)
 817 {
 818         if ($api_source) {
 819                 return;
 820         }
 821
 822         if ($return_path) {
 823                 DI::baseUrl()->redirect($return_path);
 824         }
 825
 826         $json = ['success' => 1];
 827         if (!empty($_REQUEST['jsreload'])) {
 828                 $json['reload'] = $baseurl . '/' . $_REQUEST['jsreload'];
 829         }
 830
 831         Logger::info('post_json', ['json' => $json]);
 832
 833         System::jsonExit($json);
 834 }
 835
 836 function item_content(App $a)
 837 {
 838         if (!Session::isAuthenticated()) {
 839                 throw new HTTPException\UnauthorizedException();
 840         }
 841
 842         $args = DI::args();
 843
 844         if (!$args->has(3)) {
 845                 throw new HTTPException\BadRequestException();
 846         }
 847
 848         $o = '';
 849         switch ($args->get(1)) {
 850                 case 'drop':
 851                         if (DI::mode()->isAjax()) {
 852                                 Item::deleteForUser(['id' => $args->get(2)], local_user());
 853                                 // ajax return: [<item id>, 0 (no perm) | <owner id>]
 854                                 System::jsonExit([intval($args->get(2)), local_user()]);
 855                         } else {
 856                                 if (!empty($args->get(3))) {
 857                                         $o = drop_item($args->get(2), $args->get(3));
 858                                 } else {
 859                                         $o = drop_item($args->get(2));
 860                                 }
 861                         }
 862                         break;
 863                 case 'block':
 864                         $item = Post::selectFirstForUser(local_user(), ['guid', 'author-id', 'parent', 'gravity'], ['id' => $args->get(2)]);
 865                         if (empty($item['author-id'])) {
 866                                 throw new HTTPException\NotFoundException('Item not found');
 867                         }
 868
 869                         Contact\User::setBlocked($item['author-id'], local_user(), true);
 870
 871                         if (DI::mode()->isAjax()) {
 872                                 // ajax return: [<item id>, 0 (no perm) | <owner id>]
 873                                 System::jsonExit([intval($args->get(2)), local_user()]);
 874                         } else {
 875                                 item_redirect_after_action($item, $args->get(3));
 876                         }
 877                         break;
 878         }
 879
 880         return $o;
 881 }
 882
 883 /**
 884  * @param int    $id
 885  * @param string $return
 886  * @return string
 887  * @throws HTTPException\InternalServerErrorException
 888  */
 889 function drop_item(int $id, string $return = '')
 890 {
 891         // locate item to be deleted
 892         $fields = ['id', 'uid', 'guid', 'contact-id', 'deleted', 'gravity', 'parent'];
 893         $item = Post::selectFirstForUser(local_user(), $fields, ['id' => $id]);
 894
 895         if (!DBA::isResult($item)) {
 896                 notice(DI::l10n()->t('Item not found.'));
 897                 DI::baseUrl()->redirect('network');
 898         }
 899
 900         if ($item['deleted']) {
 901                 return '';
 902         }
 903
 904         $contact_id = 0;
 905
 906         // check if logged in user is either the author or owner of this item
 907         if (Session::getRemoteContactID($item['uid']) == $item['contact-id']) {
 908                 $contact_id = $item['contact-id'];
 909         }
 910
 911         if ((local_user() == $item['uid']) || $contact_id) {
 912                 // delete the item
 913                 Item::deleteForUser(['id' => $item['id']], local_user());
 914
 915                 item_redirect_after_action($item, $return);
 916         } else {
 917                 Logger::notice('Permission denied.', ['local' => local_user(), 'uid' => $item['uid'], 'cid' => $contact_id]);
 918                 notice(DI::l10n()->t('Permission denied.'));
 919                 DI::baseUrl()->redirect('display/' . $item['guid']);
 920                 //NOTREACHED
 921         }
 922
 923         return '';
 924 }
 925
 926 function item_redirect_after_action($item, $returnUrlHex)
 927 {
 928         $return_url = hex2bin($returnUrlHex);
 929
 930         // removes update_* from return_url to ignore Ajax refresh
 931         $return_url = str_replace("update_", "", $return_url);
 932
 933         // Check if delete a comment
 934         if ($item['gravity'] == GRAVITY_COMMENT) {
 935                 if (!empty($item['parent'])) {
 936                         $parentitem = Post::selectFirstForUser(local_user(), ['guid'], ['id' => $item['parent']]);
 937                 }
 938
 939                 // Return to parent guid
 940                 if (!empty($parentitem)) {
 941                         DI::baseUrl()->redirect('display/' . $parentitem['guid']);
 942                         //NOTREACHED
 943                 } // In case something goes wrong
 944                 else {
 945                         DI::baseUrl()->redirect('network');
 946                         //NOTREACHED
 947                 }
 948         } else {
 949                 // if unknown location or deleting top level post called from display
 950                 if (empty($return_url) || strpos($return_url, 'display') !== false) {
 951                         DI::baseUrl()->redirect('network');
 952                         //NOTREACHED
 953                 } else {
 954                         DI::baseUrl()->redirect($return_url);
 955                         //NOTREACHED
 956                 }
 957         }
 958 }