mod/item.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2020, Friendica
   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\Attach;
  44 use Friendica\Model\Contact;
  45 use Friendica\Model\Conversation;
  46 use Friendica\Model\FileTag;
  47 use Friendica\Model\Item;
  48 use Friendica\Model\Notification;
  49 use Friendica\Model\Photo;
  50 use Friendica\Model\Post;
  51 use Friendica\Model\Tag;
  52 use Friendica\Model\User;
  53 use Friendica\Network\HTTPException;
  54 use Friendica\Object\EMail\ItemCCEMail;
  55 use Friendica\Protocol\Activity;
  56 use Friendica\Protocol\Diaspora;
  57 use Friendica\Security\Security;
  58 use Friendica\Util\DateTimeFormat;
  59 use Friendica\Worker\Delivery;
  60
  61 function item_post(App $a) {
  62         if (!Session::isAuthenticated()) {
  63                 throw new HTTPException\ForbiddenException();
  64         }
  65
  66         $uid = local_user();
  67
  68         if (!empty($_REQUEST['dropitems'])) {
  69                 $arr_drop = explode(',', $_REQUEST['dropitems']);
  70                 foreach ($arr_drop as $item) {
  71                         Item::deleteForUser(['id' => $item], $uid);
  72                 }
  73
  74                 $json = ['success' => 1];
  75                 System::jsonExit($json);
  76         }
  77
  78         Hook::callAll('post_local_start', $_REQUEST);
  79
  80         Logger::debug('postvars', ['_REQUEST' => $_REQUEST]);
  81
  82         $api_source = $_REQUEST['api_source'] ?? false;
  83
  84         $return_path = $_REQUEST['return'] ?? '';
  85         $preview = intval($_REQUEST['preview'] ?? 0);
  86
  87         /*
  88          * Check for doubly-submitted posts, and reject duplicates
  89          * Note that we have to ignore previews, otherwise nothing will post
  90          * after it's been previewed
  91          */
  92         if (!$preview && !empty($_REQUEST['post_id_random'])) {
  93                 if (!empty($_SESSION['post-random']) && $_SESSION['post-random'] == $_REQUEST['post_id_random']) {
  94                         Logger::info('item post: duplicate post');
  95                         item_post_return(DI::baseUrl(), $api_source, $return_path);
  96                 } else {
  97                         $_SESSION['post-random'] = $_REQUEST['post_id_random'];
  98                 }
  99         }
 100
 101         // Is this a reply to something?
 102         $parent_item_id = intval($_REQUEST['parent'] ?? 0);
 103         $thr_parent_uri = trim($_REQUEST['parent_uri'] ?? '');
 104
 105         $parent_item = null;
 106         $toplevel_item = null;
 107         $toplevel_item_id = 0;
 108         $toplevel_user_id = null;
 109
 110         $objecttype = null;
 111         $profile_uid = ($_REQUEST['profile_uid'] ?? 0) ?: local_user();
 112         $posttype = ($_REQUEST['post_type'] ?? '') ?: Item::PT_ARTICLE;
 113
 114         if ($parent_item_id || $thr_parent_uri) {
 115                 if ($parent_item_id) {
 116                         $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $parent_item_id]);
 117                 } elseif ($thr_parent_uri) {
 118                         $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
 119                 }
 120
 121                 // if this isn't the top-level parent of the conversation, find it
 122                 if (DBA::isResult($parent_item)) {
 123                         // The URI and the contact is taken from the direct parent which needn't to be the top parent
 124                         $thr_parent_uri = $parent_item['uri'];
 125                         $toplevel_item = $parent_item;
 126
 127                         if ($parent_item['gravity'] != GRAVITY_PARENT) {
 128                                 $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $toplevel_item['parent']]);
 129                         }
 130                 }
 131
 132                 if (!DBA::isResult($toplevel_item)) {
 133                         notice(DI::l10n()->t('Unable to locate original post.'));
 134                         if ($return_path) {
 135                                 DI::baseUrl()->redirect($return_path);
 136                         }
 137                         throw new HTTPException\NotFoundException(DI::l10n()->t('Unable to locate original post.'));
 138                 }
 139
 140                 // When commenting on a public post then store the post for the current user
 141                 // This enables interaction like starring and saving into folders
 142                 if ($toplevel_item['uid'] == 0) {
 143                         $stored = Item::storeForUserByUriId($toplevel_item['uri-id'], local_user());
 144                         Logger::info('Public item stored for user', ['uri-id' => $toplevel_item['uri-id'], 'uid' => $uid, 'stored' => $stored]);
 145                         if ($stored) {
 146                                 $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $stored]);
 147                         }
 148                 }
 149
 150                 $toplevel_item_id = $toplevel_item['id'];
 151                 $toplevel_user_id = $toplevel_item['uid'];
 152
 153                 $objecttype = Activity\ObjectType::COMMENT;
 154         }
 155
 156         if ($toplevel_item_id) {
 157                 Logger::info('mod_item: item_post', ['parent' => $toplevel_item_id]);
 158         }
 159
 160         $post_id     = intval($_REQUEST['post_id'] ?? 0);
 161         $app         = strip_tags($_REQUEST['source'] ?? '');
 162         $extid       = strip_tags($_REQUEST['extid'] ?? '');
 163         $object      = $_REQUEST['object'] ?? '';
 164
 165         // Don't use "defaults" here. It would turn 0 to 1
 166         if (!isset($_REQUEST['wall'])) {
 167                 $wall = 1;
 168         } else {
 169                 $wall = $_REQUEST['wall'];
 170         }
 171
 172         // Ensure that the user id in a thread always stay the same
 173         if (!is_null($toplevel_user_id) && in_array($toplevel_user_id, [local_user(), 0])) {
 174                 $profile_uid = $toplevel_user_id;
 175         }
 176
 177         // Allow commenting if it is an answer to a public post
 178         $allow_comment = local_user() && ($profile_uid == 0) && $toplevel_item_id && in_array($toplevel_item['network'], Protocol::FEDERATED);
 179
 180         // Now check that valid personal details have been provided
 181         if (!Security::canWriteToUserWall($profile_uid) && !$allow_comment) {
 182                 notice(DI::l10n()->t('Permission denied.'));
 183                 if ($return_path) {
 184                         DI::baseUrl()->redirect($return_path);
 185                 }
 186
 187                 throw new HTTPException\ForbiddenException(DI::l10n()->t('Permission denied.'));
 188         }
 189
 190         // Init post instance
 191         $orig_post = null;
 192
 193         // is this an edited post?
 194         if ($post_id > 0) {
 195                 $orig_post = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 196         }
 197
 198         $user = User::getById($profile_uid, ['allow_cid', 'allow_gid', 'deny_cid', 'deny_gid']);
 199         if (!DBA::isResult($user) && !$toplevel_item_id) {
 200                 return 0;
 201         }
 202
 203         $categories = '';
 204         $postopts = '';
 205         $emailcc = '';
 206         $body = $_REQUEST['body'] ?? '';
 207         $has_attachment = $_REQUEST['has_attachment'] ?? 0;
 208
 209         // If we have a speparate attachment, we need to add it to the body.
 210         if (!empty($has_attachment)) {
 211                 $attachment_type  = $_REQUEST['attachment_type'] ??  '';
 212                 $attachment_title = $_REQUEST['attachment_title'] ?? '';
 213                 $attachment_text  = $_REQUEST['attachment_text'] ??  '';
 214
 215                 $attachment_url     = hex2bin($_REQUEST['attachment_url'] ??     '');
 216                 $attachment_img_src = hex2bin($_REQUEST['attachment_img_src'] ?? '');
 217
 218                 $attachment_img_width  = $_REQUEST['attachment_img_width'] ??  0;
 219                 $attachment_img_height = $_REQUEST['attachment_img_height'] ?? 0;
 220                 $attachment = [
 221                         'type'   => $attachment_type,
 222                         'title'  => $attachment_title,
 223                         'text'   => $attachment_text,
 224                         'url'    => $attachment_url,
 225                 ];
 226
 227                 if (!empty($attachment_img_src)) {
 228                         $attachment['images'] = [
 229                                 0 => [
 230                                         'src'    => $attachment_img_src,
 231                                         'width'  => $attachment_img_width,
 232                                         'height' => $attachment_img_height
 233                                 ]
 234                         ];
 235                 }
 236
 237                 $att_bbcode = "\n" . PageInfo::getFooterFromData($attachment);
 238                 $body .= $att_bbcode;
 239         }
 240
 241         // Convert links with empty descriptions to links without an explicit description
 242         $body = preg_replace('#\[url=([^\]]*?)\]\[/url\]#ism', '[url]$1[/url]', $body);
 243
 244         if (!empty($orig_post)) {
 245                 $str_group_allow   = $orig_post['allow_gid'];
 246                 $str_contact_allow = $orig_post['allow_cid'];
 247                 $str_group_deny    = $orig_post['deny_gid'];
 248                 $str_contact_deny  = $orig_post['deny_cid'];
 249                 $location          = $orig_post['location'];
 250                 $coord             = $orig_post['coord'];
 251                 $verb              = $orig_post['verb'];
 252                 $objecttype        = $orig_post['object-type'];
 253                 $app               = $orig_post['app'];
 254                 $categories        = Post\Category::getTextByURIId($orig_post['uri-id'], $orig_post['uid']);
 255                 $title             = trim($_REQUEST['title'] ?? '');
 256                 $body              = trim($body);
 257                 $private           = $orig_post['private'];
 258                 $pubmail_enabled   = $orig_post['pubmail'];
 259                 $network           = $orig_post['network'];
 260                 $guid              = $orig_post['guid'];
 261                 $extid             = $orig_post['extid'];
 262         } else {
 263                 $aclFormatter = DI::aclFormatter();
 264                 $str_contact_allow = isset($_REQUEST['contact_allow']) ? $aclFormatter->toString($_REQUEST['contact_allow']) : $user['allow_cid'] ?? '';
 265                 $str_group_allow   = isset($_REQUEST['group_allow'])   ? $aclFormatter->toString($_REQUEST['group_allow'])   : $user['allow_gid'] ?? '';
 266                 $str_contact_deny  = isset($_REQUEST['contact_deny'])  ? $aclFormatter->toString($_REQUEST['contact_deny'])  : $user['deny_cid']  ?? '';
 267                 $str_group_deny    = isset($_REQUEST['group_deny'])    ? $aclFormatter->toString($_REQUEST['group_deny'])    : $user['deny_gid']  ?? '';
 268
 269                 $visibility = $_REQUEST['visibility'] ?? '';
 270                 if ($visibility === 'public') {
 271                         // The ACL selector introduced in version 2019.12 sends ACL input data even when the Public visibility is selected
 272                         $str_contact_allow = $str_group_allow = $str_contact_deny = $str_group_deny = '';
 273                 } else if ($visibility === 'custom') {
 274                         // Since we know from the visibility parameter the item should be private, we have to prevent the empty ACL
 275                         // case that would make it public. So we always append the author's contact id to the allowed contacts.
 276                         // See https://github.com/friendica/friendica/issues/9672
 277                         $str_contact_allow .= $aclFormatter->toString(Contact::getPublicIdByUserId($uid));
 278                 }
 279
 280                 $title             = trim($_REQUEST['title']    ?? '');
 281                 $location          = trim($_REQUEST['location'] ?? '');
 282                 $coord             = trim($_REQUEST['coord']    ?? '');
 283                 $verb              = trim($_REQUEST['verb']     ?? '');
 284                 $emailcc           = trim($_REQUEST['emailcc']  ?? '');
 285                 $body              = trim($body);
 286                 $network           = trim(($_REQUEST['network']  ?? '') ?: Protocol::DFRN);
 287                 $guid              = System::createUUID();
 288
 289                 $postopts = $_REQUEST['postopts'] ?? '';
 290
 291                 if (strlen($str_group_allow) || strlen($str_contact_allow) || strlen($str_group_deny) || strlen($str_contact_deny)) {
 292                         $private = Item::PRIVATE;
 293                 } elseif (DI::pConfig()->get($profile_uid, 'system', 'unlisted')) {
 294                         $private = Item::UNLISTED;
 295                 } else {
 296                         $private = Item::PUBLIC;
 297                 }
 298
 299                 // If this is a comment, set the permissions from the parent.
 300
 301                 if ($toplevel_item) {
 302                         // for non native networks use the network of the original post as network of the item
 303                         if (($toplevel_item['network'] != Protocol::DIASPORA)
 304                                 && ($toplevel_item['network'] != Protocol::OSTATUS)
 305                                 && ($network == "")) {
 306                                 $network = $toplevel_item['network'];
 307                         }
 308
 309                         $str_contact_allow = $toplevel_item['allow_cid'] ?? '';
 310                         $str_group_allow   = $toplevel_item['allow_gid'] ?? '';
 311                         $str_contact_deny  = $toplevel_item['deny_cid'] ?? '';
 312                         $str_group_deny    = $toplevel_item['deny_gid'] ?? '';
 313                         $private           = $toplevel_item['private'];
 314
 315                         $wall              = $toplevel_item['wall'];
 316                 }
 317
 318                 $pubmail_enabled = ($_REQUEST['pubmail_enable'] ?? false) && !$private;
 319
 320                 // if using the API, we won't see pubmail_enable - figure out if it should be set
 321                 if ($api_source && $profile_uid && $profile_uid == local_user() && !$private) {
 322                         if (function_exists('imap_open') && !DI::config()->get('system', 'imap_disabled')) {
 323                                 $pubmail_enabled = DBA::exists('mailacct', ["`uid` = ? AND `server` != ? AND `pubmail`", local_user(), '']);
 324                         }
 325                 }
 326
 327                 if (!strlen($body)) {
 328                         if ($preview) {
 329                                 System::jsonExit(['preview' => '']);
 330                         }
 331
 332                         notice(DI::l10n()->t('Empty post discarded.'));
 333                         if ($return_path) {
 334                                 DI::baseUrl()->redirect($return_path);
 335                         }
 336
 337                         throw new HTTPException\BadRequestException(DI::l10n()->t('Empty post discarded.'));
 338                 }
 339         }
 340
 341         if (!empty($categories)) {
 342                 // get the "fileas" tags for this post
 343                 $filedas = FileTag::fileToArray($categories);
 344         }
 345
 346         $categories = FileTag::listToFile(trim($_REQUEST['category'] ?? ''), 'category');
 347
 348         if (!empty($filedas) && is_array($filedas)) {
 349                 // append the fileas stuff to the new categories list
 350                 $categories .= FileTag::arrayToFile($filedas);
 351         }
 352
 353         // get contact info for poster
 354
 355         $author = null;
 356         $self   = false;
 357         $contact_id = 0;
 358
 359         if (local_user() && ((local_user() == $profile_uid) || $allow_comment)) {
 360                 $self = true;
 361                 $author = DBA::selectFirst('contact', [], ['uid' => local_user(), 'self' => true]);
 362         } elseif (!empty(Session::getRemoteContactID($profile_uid))) {
 363                 $author = DBA::selectFirst('contact', [], ['id' => Session::getRemoteContactID($profile_uid)]);
 364         }
 365
 366         if (DBA::isResult($author)) {
 367                 $contact_id = $author['id'];
 368         }
 369
 370         // get contact info for owner
 371         if ($profile_uid == local_user() || $allow_comment) {
 372                 $contact_record = $author ?: [];
 373         } else {
 374                 $contact_record = DBA::selectFirst('contact', [], ['uid' => $profile_uid, 'self' => true]) ?: [];
 375         }
 376
 377         // Look for any tags and linkify them
 378         $inform   = '';
 379         $private_forum = false;
 380         $private_id = null;
 381         $only_to_forum = false;
 382         $forum_contact = [];
 383
 384         $body = BBCode::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) use ($profile_uid, $network, $str_contact_allow, &$inform, &$private_forum, &$private_id, &$only_to_forum, &$forum_contact) {
 385                 $tags = BBCode::getTags($body);
 386
 387                 $tagged = [];
 388
 389                 foreach ($tags as $tag) {
 390                         $tag_type = substr($tag, 0, 1);
 391
 392                         if ($tag_type == Tag::TAG_CHARACTER[Tag::HASHTAG]) {
 393                                 continue;
 394                         }
 395
 396                         /* If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
 397                          * Robert Johnson should be first in the $tags array
 398                          */
 399                         foreach ($tagged as $nextTag) {
 400                                 if (stristr($nextTag, $tag . ' ')) {
 401                                         continue 2;
 402                                 }
 403                         }
 404
 405                         $success = ItemHelper::replaceTag($body, $inform, local_user() ? local_user() : $profile_uid, $tag, $network);
 406                         if ($success['replaced']) {
 407                                 $tagged[] = $tag;
 408                         }
 409                         // When the forum is private or the forum is addressed with a "!" make the post private
 410                         if (!empty($success['contact']['prv']) || ($tag_type == Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION])) {
 411                                 $private_forum = $success['contact']['prv'];
 412                                 $only_to_forum = ($tag_type == Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION]);
 413                                 $private_id = $success['contact']['id'];
 414                                 $forum_contact = $success['contact'];
 415                         } elseif (!empty($success['contact']['forum']) && ($str_contact_allow == '<' . $success['contact']['id'] . '>')) {
 416                                 $private_forum = false;
 417                                 $only_to_forum = true;
 418                                 $private_id = $success['contact']['id'];
 419                                 $forum_contact = $success['contact'];
 420                         }
 421                 }
 422
 423                 return $body;
 424         });
 425
 426         $original_contact_id = $contact_id;
 427
 428         if (!$toplevel_item_id && !empty($forum_contact) && ($private_forum || $only_to_forum)) {
 429                 // we tagged a forum in a top level post. Now we change the post
 430                 $private = $private_forum;
 431
 432                 $str_group_allow = '';
 433                 $str_contact_deny = '';
 434                 $str_group_deny = '';
 435                 if ($private_forum) {
 436                         $str_contact_allow = '<' . $private_id . '>';
 437                 } else {
 438                         $str_contact_allow = '';
 439                 }
 440                 $contact_id = $private_id;
 441                 $contact_record = $forum_contact;
 442                 $_REQUEST['origin'] = false;
 443                 $wall = 0;
 444         }
 445
 446         /*
 447          * When a photo was uploaded into the message using the (profile wall) ajax
 448          * uploader, The permissions are initially set to disallow anybody but the
 449          * owner from seeing it. This is because the permissions may not yet have been
 450          * set for the post. If it's private, the photo permissions should be set
 451          * appropriately. But we didn't know the final permissions on the post until
 452          * now. So now we'll look for links of uploaded messages that are in the
 453          * post and set them to the same permissions as the post itself.
 454          */
 455
 456         $match = null;
 457
 458         if (!$preview && Photo::setPermissionFromBody($body, $uid, $original_contact_id, $str_contact_allow, $str_group_allow, $str_contact_deny, $str_group_deny)) {
 459                 $objecttype = Activity\ObjectType::IMAGE;
 460         }
 461
 462         /*
 463          * Next link in any attachment references we find in the post.
 464          */
 465         $match = [];
 466
 467         /// @todo these lines should be moved to Model/Attach (Once it exists)
 468         if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
 469                 $attaches = $match[1];
 470                 if (count($attaches)) {
 471                         foreach ($attaches as $attach) {
 472                                 // Ensure to only modify attachments that you own
 473                                 $srch = '<' . intval($original_contact_id) . '>';
 474
 475                                 $condition = ['allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
 476                                                 'id' => $attach];
 477                                 if (!Attach::exists($condition)) {
 478                                         continue;
 479                                 }
 480
 481                                 $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
 482                                                 'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
 483                                 $condition = ['id' => $attach];
 484                                 Attach::update($fields, $condition);
 485                         }
 486                 }
 487         }
 488
 489         // embedded bookmark or attachment in post? set bookmark flag
 490
 491         $data = BBCode::getAttachmentData($body);
 492         $match = [];
 493         if ((preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data["type"]))
 494                 && ($posttype != Item::PT_PERSONAL_NOTE)) {
 495                 $posttype = Item::PT_PAGE;
 496                 $objecttype =  Activity\ObjectType::BOOKMARK;
 497         }
 498
 499         $body = DI::bbCodeVideo()->transform($body);
 500
 501         $body = BBCode::scaleExternalImages($body);
 502
 503         // Setting the object type if not defined before
 504         if (!$objecttype) {
 505                 $objecttype = Activity\ObjectType::NOTE; // Default value
 506                 $objectdata = BBCode::getAttachedData($body);
 507
 508                 if ($objectdata["type"] == "link") {
 509                         $objecttype = Activity\ObjectType::BOOKMARK;
 510                 } elseif ($objectdata["type"] == "video") {
 511                         $objecttype = Activity\ObjectType::VIDEO;
 512                 } elseif ($objectdata["type"] == "photo") {
 513                         $objecttype = Activity\ObjectType::IMAGE;
 514                 }
 515
 516         }
 517
 518         $attachments = '';
 519         $match = [];
 520
 521         if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
 522                 foreach ($match[2] as $mtch) {
 523                         $fields = ['id', 'filename', 'filesize', 'filetype'];
 524                         $attachment = Attach::selectFirst($fields, ['id' => $mtch]);
 525                         if ($attachment !== false) {
 526                                 if (strlen($attachments)) {
 527                                         $attachments .= ',';
 528                                 }
 529                                 $attachments .= Post\Media::getAttachElement(DI::baseUrl() . '/attach/' . $attachment['id'],
 530                                         $attachment['filesize'], $attachment['filetype'], $attachment['filename'] ?? '');
 531                         }
 532                         $body = str_replace($match[1],'',$body);
 533                 }
 534         }
 535
 536         if (!strlen($verb)) {
 537                 $verb = Activity::POST;
 538         }
 539
 540         if ($network == "") {
 541                 $network = Protocol::DFRN;
 542         }
 543
 544         $gravity = ($toplevel_item_id ? GRAVITY_COMMENT : GRAVITY_PARENT);
 545
 546         // even if the post arrived via API we are considering that it
 547         // originated on this site by default for determining relayability.
 548
 549         // Don't use "defaults" here. It would turn 0 to 1
 550         if (!isset($_REQUEST['origin'])) {
 551                 $origin = 1;
 552         } else {
 553                 $origin = $_REQUEST['origin'];
 554         }
 555
 556         $uri = Item::newURI($api_source ? $profile_uid : $uid, $guid);
 557
 558         // Fallback so that we alway have a parent uri
 559         if (!$thr_parent_uri || !$toplevel_item_id) {
 560                 $thr_parent_uri = $uri;
 561         }
 562
 563         $datarray = [];
 564         $datarray['uid']           = $profile_uid;
 565         $datarray['wall']          = $wall;
 566         $datarray['gravity']       = $gravity;
 567         $datarray['network']       = $network;
 568         $datarray['contact-id']    = $contact_id;
 569         $datarray['owner-name']    = $contact_record['name'] ?? '';
 570         $datarray['owner-link']    = $contact_record['url'] ?? '';
 571         $datarray['owner-avatar']  = $contact_record['thumb'] ?? '';
 572         $datarray['owner-id']      = Contact::getIdForURL($datarray['owner-link']);
 573         $datarray['author-name']   = $author['name'];
 574         $datarray['author-link']   = $author['url'];
 575         $datarray['author-avatar'] = $author['thumb'];
 576         $datarray['author-id']     = Contact::getIdForURL($datarray['author-link']);
 577         $datarray['created']       = DateTimeFormat::utcNow();
 578         $datarray['edited']        = DateTimeFormat::utcNow();
 579         $datarray['commented']     = DateTimeFormat::utcNow();
 580         $datarray['received']      = DateTimeFormat::utcNow();
 581         $datarray['changed']       = DateTimeFormat::utcNow();
 582         $datarray['extid']         = $extid;
 583         $datarray['guid']          = $guid;
 584         $datarray['uri']           = $uri;
 585         $datarray['title']         = $title;
 586         $datarray['body']          = $body;
 587         $datarray['app']           = $app;
 588         $datarray['location']      = $location;
 589         $datarray['coord']         = $coord;
 590         $datarray['file']          = $categories;
 591         $datarray['inform']        = $inform;
 592         $datarray['verb']          = $verb;
 593         $datarray['post-type']     = $posttype;
 594         $datarray['object-type']   = $objecttype;
 595         $datarray['allow_cid']     = $str_contact_allow;
 596         $datarray['allow_gid']     = $str_group_allow;
 597         $datarray['deny_cid']      = $str_contact_deny;
 598         $datarray['deny_gid']      = $str_group_deny;
 599         $datarray['private']       = $private;
 600         $datarray['pubmail']       = $pubmail_enabled;
 601         $datarray['attach']        = $attachments;
 602
 603         $datarray['thr-parent']    = $thr_parent_uri;
 604
 605         $datarray['postopts']      = $postopts;
 606         $datarray['origin']        = $origin;
 607         $datarray['object']        = $object;
 608
 609         /*
 610          * These fields are for the convenience of addons...
 611          * 'self' if true indicates the owner is posting on their own wall
 612          * If parent is 0 it is a top-level post.
 613          */
 614         $datarray['parent']        = $toplevel_item_id;
 615         $datarray['self']          = $self;
 616
 617         // This triggers posts via API and the mirror functions
 618         $datarray['api_source'] = $api_source;
 619
 620         // This field is for storing the raw conversation data
 621         $datarray['protocol'] = Conversation::PARCEL_DIRECT;
 622         $datarray['direction'] = Conversation::PUSH;
 623
 624         $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $datarray['thr-parent']]);
 625         if (DBA::isResult($conversation)) {
 626                 if ($conversation['conversation-uri'] != '') {
 627                         $datarray['conversation-uri'] = $conversation['conversation-uri'];
 628                 }
 629                 if ($conversation['conversation-href'] != '') {
 630                         $datarray['conversation-href'] = $conversation['conversation-href'];
 631                 }
 632         }
 633
 634         if ($orig_post) {
 635                 $datarray['edit'] = true;
 636         } else {
 637                 // If this was a share, add missing data here
 638                 $datarray = Item::addShareDataFromOriginal($datarray);
 639
 640                 $datarray['edit'] = false;
 641         }
 642
 643         // Check for hashtags in the body and repair or add hashtag links
 644         if ($preview || $orig_post) {
 645                 $datarray['body'] = Item::setHashtags($datarray['body']);
 646         }
 647
 648         // preview mode - prepare the body for display and send it via json
 649         if ($preview) {
 650                 // We set the datarray ID to -1 because in preview mode the dataray
 651                 // doesn't have an ID.
 652                 $datarray["id"] = -1;
 653                 $datarray["uri-id"] = -1;
 654                 $datarray["author-network"] = Protocol::DFRN;
 655
 656                 $o = conversation($a, [array_merge($contact_record, $datarray)], 'search', false, true);
 657
 658                 System::jsonExit(['preview' => $o]);
 659         }
 660
 661         Hook::callAll('post_local',$datarray);
 662
 663         if (!empty($datarray['cancel'])) {
 664                 Logger::info('mod_item: post cancelled by addon.');
 665                 if ($return_path) {
 666                         DI::baseUrl()->redirect($return_path);
 667                 }
 668
 669                 $json = ['cancel' => 1];
 670                 if (!empty($_REQUEST['jsreload'])) {
 671                         $json['reload'] = DI::baseUrl() . '/' . $_REQUEST['jsreload'];
 672                 }
 673
 674                 System::jsonExit($json);
 675         }
 676
 677         if ($orig_post) {
 678                 // Fill the cache field
 679                 // This could be done in Item::update as well - but we have to check for the existance of some fields.
 680                 Item::putInCache($datarray);
 681
 682                 $fields = [
 683                         'title' => $datarray['title'],
 684                         'body' => $datarray['body'],
 685                         'attach' => $datarray['attach'],
 686                         'file' => $datarray['file'],
 687                         'rendered-html' => $datarray['rendered-html'],
 688                         'rendered-hash' => $datarray['rendered-hash'],
 689                         'edited' => DateTimeFormat::utcNow(),
 690                         'changed' => DateTimeFormat::utcNow()];
 691
 692                 Item::update($fields, ['id' => $post_id]);
 693
 694                 if ($return_path) {
 695                         DI::baseUrl()->redirect($return_path);
 696                 }
 697
 698                 throw new HTTPException\OKException(DI::l10n()->t('Post updated.'));
 699         }
 700
 701         unset($datarray['edit']);
 702         unset($datarray['self']);
 703         unset($datarray['api_source']);
 704
 705         if ($origin) {
 706                 $signed = Diaspora::createCommentSignature($uid, $datarray);
 707                 if (!empty($signed)) {
 708                         $datarray['diaspora_signed_text'] = json_encode($signed);
 709                 }
 710         }
 711
 712         $post_id = Item::insert($datarray);
 713
 714         if (!$post_id) {
 715                 notice(DI::l10n()->t('Item wasn\'t stored.'));
 716                 if ($return_path) {
 717                         DI::baseUrl()->redirect($return_path);
 718                 }
 719
 720                 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item wasn\'t stored.'));
 721         }
 722
 723         $datarray = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 724
 725         if (!DBA::isResult($datarray)) {
 726                 Logger::error('Item couldn\'t be fetched.', ['post_id' => $post_id]);
 727                 if ($return_path) {
 728                         DI::baseUrl()->redirect($return_path);
 729                 }
 730
 731                 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item couldn\'t be fetched.'));
 732         }
 733
 734         Tag::storeFromBody($datarray['uri-id'], $datarray['body']);
 735
 736         if (!\Friendica\Content\Feature::isEnabled($uid, 'explicit_mentions') && ($datarray['gravity'] == GRAVITY_COMMENT)) {
 737                 Tag::createImplicitMentions($datarray['uri-id'], $datarray['thr-parent-id']);
 738         }
 739
 740         // These notifications are sent if someone else is commenting other your wall
 741         if ($contact_record != $author) {
 742                 if ($toplevel_item_id) {
 743                         notification([
 744                                 'type'  => Notification\Type::COMMENT,
 745                                 'otype' => Notification\ObjectType::ITEM,
 746                                 'verb'  => Activity::POST,
 747                                 'uid'   => $profile_uid,
 748                                 'cid'   => $datarray['author-id'],
 749                                 'item'  => $datarray,
 750                                 'link'  => DI::baseUrl() . '/display/' . urlencode($datarray['guid']),
 751                         ]);
 752                 } elseif (empty($forum_contact)) {
 753                         notification([
 754                                 'type'  => Notification\Type::WALL,
 755                                 'otype' => Notification\ObjectType::ITEM,
 756                                 'verb'  => Activity::POST,
 757                                 'uid'   => $profile_uid,
 758                                 'cid'   => $datarray['author-id'],
 759                                 'item'  => $datarray,
 760                                 'link'  => DI::baseUrl() . '/display/' . urlencode($datarray['guid']),
 761                         ]);
 762                 }
 763         }
 764
 765         Hook::callAll('post_local_end', $datarray);
 766
 767         if (strlen($emailcc) && $profile_uid == local_user()) {
 768                 $recipients = explode(',', $emailcc);
 769                 if (count($recipients)) {
 770                         foreach ($recipients as $recipient) {
 771                                 $address = trim($recipient);
 772                                 if (!strlen($address)) {
 773                                         continue;
 774                                 }
 775                                 DI::emailer()->send(new ItemCCEMail(DI::app(), DI::l10n(), DI::baseUrl(),
 776                                         $datarray, $address, $author['thumb'] ?? ''));
 777                         }
 778                 }
 779         }
 780
 781         // When we are doing some forum posting via ! we have to start the notifier manually.
 782         // These kind of posts don't initiate the notifier call in the item class.
 783         if ($only_to_forum) {
 784                 Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => false], "Notifier", Delivery::POST, (int)$datarray['uri-id'], (int)$datarray['uid']);
 785         }
 786
 787         Logger::info('post_complete');
 788
 789         if ($api_source) {
 790                 return $post_id;
 791         }
 792
 793         item_post_return(DI::baseUrl(), $api_source, $return_path);
 794         // NOTREACHED
 795 }
 796
 797 function item_post_return($baseurl, $api_source, $return_path)
 798 {
 799         if ($api_source) {
 800                 return;
 801         }
 802
 803         if ($return_path) {
 804                 DI::baseUrl()->redirect($return_path);
 805         }
 806
 807         $json = ['success' => 1];
 808         if (!empty($_REQUEST['jsreload'])) {
 809                 $json['reload'] = $baseurl . '/' . $_REQUEST['jsreload'];
 810         }
 811
 812         Logger::info('post_json', ['json' => $json]);
 813
 814         System::jsonExit($json);
 815 }
 816
 817 function item_content(App $a)
 818 {
 819         if (!Session::isAuthenticated()) {
 820                 throw new HTTPException\UnauthorizedException();
 821         }
 822
 823         $args = DI::args();
 824
 825         if (!$args->has(3)) {
 826                 throw new HTTPException\BadRequestException();
 827         }
 828
 829         $o = '';
 830         switch ($args->get(1)) {
 831                 case 'drop':
 832                         if (DI::mode()->isAjax()) {
 833                                 Item::deleteForUser(['id' => $args->get(2)], local_user());
 834                                 // ajax return: [<item id>, 0 (no perm) | <owner id>]
 835                                 System::jsonExit([intval($args->get(2)), local_user()]);
 836                         } else {
 837                                 if (!empty($args->get(3))) {
 838                                         $o = drop_item($args->get(2), $args->get(3));
 839                                 } else {
 840                                         $o = drop_item($args->get(2));
 841                                 }
 842                         }
 843                         break;
 844                 case 'block':
 845                         $item = Post::selectFirstForUser(local_user(), ['guid', 'author-id', 'parent', 'gravity'], ['id' => $args->get(2)]);
 846                         if (empty($item['author-id'])) {
 847                                 throw new HTTPException\NotFoundException('Item not found');
 848                         }
 849
 850                         $cdata = Contact::getPublicAndUserContacID($item['author-id'], local_user());
 851                         if (empty($cdata['user'])) {
 852                                 throw new HTTPException\NotFoundException('Contact not found');
 853                         }
 854
 855                         Contact::block($cdata['user'], DI::l10n()->t('Blocked on item with guid %s', $item['guid']));
 856
 857                         if (DI::mode()->isAjax()) {
 858                                 // ajax return: [<item id>, 0 (no perm) | <owner id>]
 859                                 System::jsonExit([intval($args->get(2)), local_user()]);
 860                         } else {
 861                                 item_redirect_after_action($item, $args->get(3));
 862                         }
 863                         break;
 864         }
 865
 866         return $o;
 867 }
 868
 869 /**
 870  * @param int    $id
 871  * @param string $return
 872  * @return string
 873  * @throws HTTPException\InternalServerErrorException
 874  */
 875 function drop_item(int $id, string $return = '')
 876 {
 877         // locate item to be deleted
 878         $fields = ['id', 'uid', 'guid', 'contact-id', 'deleted', 'gravity', 'parent'];
 879         $item = Post::selectFirstForUser(local_user(), $fields, ['id' => $id]);
 880
 881         if (!DBA::isResult($item)) {
 882                 notice(DI::l10n()->t('Item not found.'));
 883                 DI::baseUrl()->redirect('network');
 884         }
 885
 886         if ($item['deleted']) {
 887                 return '';
 888         }
 889
 890         $contact_id = 0;
 891
 892         // check if logged in user is either the author or owner of this item
 893         if (Session::getRemoteContactID($item['uid']) == $item['contact-id']) {
 894                 $contact_id = $item['contact-id'];
 895         }
 896
 897         if ((local_user() == $item['uid']) || $contact_id) {
 898                 // delete the item
 899                 Item::deleteForUser(['id' => $item['id']], local_user());
 900
 901                 item_redirect_after_action($item, $return);
 902         } else {
 903                 notice(DI::l10n()->t('Permission denied.'));
 904                 DI::baseUrl()->redirect('display/' . $item['guid']);
 905                 //NOTREACHED
 906         }
 907
 908         return '';
 909 }
 910
 911 function item_redirect_after_action($item, $returnUrlHex)
 912 {
 913         $return_url = hex2bin($returnUrlHex);
 914
 915         // removes update_* from return_url to ignore Ajax refresh
 916         $return_url = str_replace("update_", "", $return_url);
 917
 918         // Check if delete a comment
 919         if ($item['gravity'] == GRAVITY_COMMENT) {
 920                 if (!empty($item['parent'])) {
 921                         $parentitem = Post::selectFirstForUser(local_user(), ['guid'], ['id' => $item['parent']]);
 922                 }
 923
 924                 // Return to parent guid
 925                 if (!empty($parentitem)) {
 926                         DI::baseUrl()->redirect('display/' . $parentitem['guid']);
 927                         //NOTREACHED
 928                 } // In case something goes wrong
 929                 else {
 930                         DI::baseUrl()->redirect('network');
 931                         //NOTREACHED
 932                 }
 933         } else {
 934                 // if unknown location or deleting top level post called from display
 935                 if (empty($return_url) || strpos($return_url, 'display') !== false) {
 936                         DI::baseUrl()->redirect('network');
 937                         //NOTREACHED
 938                 } else {
 939                         DI::baseUrl()->redirect($return_url);
 940                         //NOTREACHED
 941                 }
 942         }
 943 }