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\Pager;
  33 use Friendica\Content\Text\BBCode;
  34 use Friendica\Core\Hook;
  35 use Friendica\Core\Logger;
  36 use Friendica\Core\Protocol;
  37 use Friendica\Core\Session;
  38 use Friendica\Core\System;
  39 use Friendica\Core\Worker;
  40 use Friendica\Database\DBA;
  41 use Friendica\DI;
  42 use Friendica\Model\Attach;
  43 use Friendica\Model\Contact;
  44 use Friendica\Model\Conversation;
  45 use Friendica\Model\FileTag;
  46 use Friendica\Model\Item;
  47 use Friendica\Model\Notify\Type;
  48 use Friendica\Model\Photo;
  49 use Friendica\Model\Tag;
  50 use Friendica\Model\Term;
  51 use Friendica\Network\HTTPException;
  52 use Friendica\Object\EMail\ItemCCEMail;
  53 use Friendica\Protocol\Activity;
  54 use Friendica\Protocol\Diaspora;
  55 use Friendica\Util\DateTimeFormat;
  56 use Friendica\Util\Security;
  57 use Friendica\Util\Strings;
  58 use Friendica\Worker\Delivery;
  59
  60 require_once __DIR__ . '/../include/items.php';
  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(',', $_REQUEST['dropitems']);
  71                 drop_items($arr_drop);
  72                 $json = ['success' => 1];
  73                 System::jsonExit($json);
  74         }
  75
  76         Hook::callAll('post_local_start', $_REQUEST);
  77
  78         Logger::debug('postvars', ['_REQUEST' => $_REQUEST]);
  79
  80         $api_source = $_REQUEST['api_source'] ?? false;
  81
  82         $message_id = ((!empty($_REQUEST['message_id']) && $api_source) ? strip_tags($_REQUEST['message_id']) : '');
  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         $toplevel_item_id = intval($_REQUEST['parent'] ?? 0);
 103         $thr_parent_uri = trim($_REQUEST['parent_uri'] ?? '');
 104
 105         $thread_parent_id = 0;
 106         $thread_parent_contact = null;
 107
 108         $toplevel_item = null;
 109         $parent_user = null;
 110
 111         $parent_contact = null;
 112
 113         $objecttype = null;
 114         $profile_uid = ($_REQUEST['profile_uid'] ?? 0) ?: local_user();
 115         $posttype = ($_REQUEST['post_type'] ?? '') ?: Item::PT_ARTICLE;
 116
 117         if ($toplevel_item_id || $thr_parent_uri) {
 118                 if ($toplevel_item_id) {
 119                         $toplevel_item = Item::selectFirst([], ['id' => $toplevel_item_id]);
 120                 } elseif ($thr_parent_uri) {
 121                         $toplevel_item = Item::selectFirst([], ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
 122                 }
 123
 124                 // if this isn't the top-level parent of the conversation, find it
 125                 if (DBA::isResult($toplevel_item)) {
 126                         // The URI and the contact is taken from the direct parent which needn't to be the top parent
 127                         $thread_parent_id = $toplevel_item['id'];
 128                         $thr_parent_uri = $toplevel_item['uri'];
 129                         $thread_parent_contact = Contact::getDetailsByURL($toplevel_item["author-link"]);
 130
 131                         if ($toplevel_item['id'] != $toplevel_item['parent']) {
 132                                 $toplevel_item = Item::selectFirst([], ['id' => $toplevel_item['parent']]);
 133                         }
 134                 }
 135
 136                 if (!DBA::isResult($toplevel_item)) {
 137                         notice(DI::l10n()->t('Unable to locate original post.'));
 138                         if ($return_path) {
 139                                 DI::baseUrl()->redirect($return_path);
 140                         }
 141                         throw new HTTPException\NotFoundException(DI::l10n()->t('Unable to locate original post.'));
 142                 }
 143
 144                 $toplevel_item_id = $toplevel_item['id'];
 145                 $parent_user = $toplevel_item['uid'];
 146
 147                 $objecttype = Activity\ObjectType::COMMENT;
 148         }
 149
 150         if ($toplevel_item_id) {
 151                 Logger::info('mod_item: item_post', ['parent' => $toplevel_item_id]);
 152         }
 153
 154         $post_id     = intval($_REQUEST['post_id'] ?? 0);
 155         $app         = strip_tags($_REQUEST['source'] ?? '');
 156         $extid       = strip_tags($_REQUEST['extid'] ?? '');
 157         $object      = $_REQUEST['object'] ?? '';
 158
 159         // Don't use "defaults" here. It would turn 0 to 1
 160         if (!isset($_REQUEST['wall'])) {
 161                 $wall = 1;
 162         } else {
 163                 $wall = $_REQUEST['wall'];
 164         }
 165
 166         // Ensure that the user id in a thread always stay the same
 167         if (!is_null($parent_user) && in_array($parent_user, [local_user(), 0])) {
 168                 $profile_uid = $parent_user;
 169         }
 170
 171         // Check for multiple posts with the same message id (when the post was created via API)
 172         if (($message_id != '') && ($profile_uid != 0)) {
 173                 if (Item::exists(['uri' => $message_id, 'uid' => $profile_uid])) {
 174                         Logger::info('Message already exists for user', ['uri' => $message_id, 'uid' => $profile_uid]);
 175                         return 0;
 176                 }
 177         }
 178
 179         // Allow commenting if it is an answer to a public post
 180         $allow_comment = local_user() && ($profile_uid == 0) && $toplevel_item_id && in_array($toplevel_item['network'], Protocol::FEDERATED);
 181
 182         // Now check that valid personal details have been provided
 183         if (!Security::canWriteToUserWall($profile_uid) && !$allow_comment) {
 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 = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 198         }
 199
 200         $user = DBA::selectFirst('user', [], ['uid' => $profile_uid]);
 201
 202         if (!DBA::isResult($user) && !$toplevel_item_id) {
 203                 return 0;
 204         }
 205
 206         $categories = '';
 207         $postopts = '';
 208         $emailcc = '';
 209         $body = $_REQUEST['body'] ?? '';
 210         $has_attachment = $_REQUEST['has_attachment'] ?? 0;
 211
 212         // If we have a speparate attachment, we need to add it to the body.
 213         if (!empty($has_attachment)) {
 214                 $attachment_type  = $_REQUEST['attachment_type'] ??  '';
 215                 $attachment_title = $_REQUEST['attachment_title'] ?? '';
 216                 $attachment_text  = $_REQUEST['attachment_text'] ??  '';
 217
 218                 $attachment_url     = hex2bin($_REQUEST['attachment_url'] ??     '');
 219                 $attachment_img_src = hex2bin($_REQUEST['attachment_img_src'] ?? '');
 220
 221                 $attachment_img_width  = $_REQUEST['attachment_img_width'] ??  0;
 222                 $attachment_img_height = $_REQUEST['attachment_img_height'] ?? 0;
 223                 $attachment = [
 224                         'type'   => $attachment_type,
 225                         'title'  => $attachment_title,
 226                         'text'   => $attachment_text,
 227                         'url'    => $attachment_url,
 228                 ];
 229
 230                 if (!empty($attachment_img_src)) {
 231                         $attachment['images'] = [
 232                                 0 => [
 233                                         'src'    => $attachment_img_src,
 234                                         'width'  => $attachment_img_width,
 235                                         'height' => $attachment_img_height
 236                                 ]
 237                         ];
 238                 }
 239
 240                 $att_bbcode = add_page_info_data($attachment);
 241                 $body .= $att_bbcode;
 242         }
 243
 244         // Convert links with empty descriptions to links without an explicit description
 245         $body = preg_replace('#\[url=([^\]]*?)\]\[/url\]#ism', '[url]$1[/url]', $body);
 246
 247         if (!empty($orig_post)) {
 248                 $str_group_allow   = $orig_post['allow_gid'];
 249                 $str_contact_allow = $orig_post['allow_cid'];
 250                 $str_group_deny    = $orig_post['deny_gid'];
 251                 $str_contact_deny  = $orig_post['deny_cid'];
 252                 $location          = $orig_post['location'];
 253                 $coord             = $orig_post['coord'];
 254                 $verb              = $orig_post['verb'];
 255                 $objecttype        = $orig_post['object-type'];
 256                 $app               = $orig_post['app'];
 257                 $categories        = $orig_post['file'];
 258                 $title             = Strings::escapeTags(trim($_REQUEST['title']));
 259                 $body              = trim($body);
 260                 $private           = $orig_post['private'];
 261                 $pubmail_enabled   = $orig_post['pubmail'];
 262                 $network           = $orig_post['network'];
 263                 $guid              = $orig_post['guid'];
 264                 $extid             = $orig_post['extid'];
 265         } else {
 266                 $str_contact_allow = '';
 267                 $str_group_allow   = '';
 268                 $str_contact_deny  = '';
 269                 $str_group_deny    = '';
 270
 271                 if (($_REQUEST['visibility'] ?? '') !== 'public') {
 272                         $aclFormatter = DI::aclFormatter();
 273                         $str_contact_allow = isset($_REQUEST['contact_allow']) ? $aclFormatter->toString($_REQUEST['contact_allow']) : $user['allow_cid'] ?? '';
 274                         $str_group_allow   = isset($_REQUEST['group_allow'])   ? $aclFormatter->toString($_REQUEST['group_allow'])   : $user['allow_gid'] ?? '';
 275                         $str_contact_deny  = isset($_REQUEST['contact_deny'])  ? $aclFormatter->toString($_REQUEST['contact_deny'])  : $user['deny_cid']  ?? '';
 276                         $str_group_deny    = isset($_REQUEST['group_deny'])    ? $aclFormatter->toString($_REQUEST['group_deny'])    : $user['deny_gid']  ?? '';
 277                 }
 278
 279                 $title             = Strings::escapeTags(trim($_REQUEST['title']    ?? ''));
 280                 $location          = Strings::escapeTags(trim($_REQUEST['location'] ?? ''));
 281                 $coord             = Strings::escapeTags(trim($_REQUEST['coord']    ?? ''));
 282                 $verb              = Strings::escapeTags(trim($_REQUEST['verb']     ?? ''));
 283                 $emailcc           = Strings::escapeTags(trim($_REQUEST['emailcc']  ?? ''));
 284                 $body              = trim($body);
 285                 $network           = Strings::escapeTags(trim(($_REQUEST['network']  ?? '') ?: Protocol::DFRN));
 286                 $guid              = System::createUUID();
 287
 288                 $postopts = $_REQUEST['postopts'] ?? '';
 289
 290                 if (strlen($str_group_allow) || strlen($str_contact_allow) || strlen($str_group_deny) || strlen($str_contact_deny)) {
 291                         $private = Item::PRIVATE;
 292                 } elseif (DI::pConfig()->get($profile_uid, 'system', 'unlisted')) {
 293                         $private = Item::UNLISTED;
 294                 } else {
 295                         $private = Item::PUBLIC;
 296                 }
 297
 298                 // If this is a comment, set the permissions from the parent.
 299
 300                 if ($toplevel_item) {
 301                         // for non native networks use the network of the original post as network of the item
 302                         if (($toplevel_item['network'] != Protocol::DIASPORA)
 303                                 && ($toplevel_item['network'] != Protocol::OSTATUS)
 304                                 && ($network == "")) {
 305                                 $network = $toplevel_item['network'];
 306                         }
 307
 308                         $str_contact_allow = $toplevel_item['allow_cid'] ?? '';
 309                         $str_group_allow   = $toplevel_item['allow_gid'] ?? '';
 310                         $str_contact_deny  = $toplevel_item['deny_cid'] ?? '';
 311                         $str_group_deny    = $toplevel_item['deny_gid'] ?? '';
 312                         $private           = $toplevel_item['private'];
 313
 314                         $wall              = $toplevel_item['wall'];
 315                 }
 316
 317                 $pubmail_enabled = ($_REQUEST['pubmail_enable'] ?? false) && !$private;
 318
 319                 // if using the API, we won't see pubmail_enable - figure out if it should be set
 320                 if ($api_source && $profile_uid && $profile_uid == local_user() && !$private) {
 321                         if (function_exists('imap_open') && !DI::config()->get('system', 'imap_disabled')) {
 322                                 $pubmail_enabled = DBA::exists('mailacct', ["`uid` = ? AND `server` != ? AND `pubmail`", local_user(), '']);
 323                         }
 324                 }
 325
 326                 if (!strlen($body)) {
 327                         if ($preview) {
 328                                 System::jsonExit(['preview' => '']);
 329                         }
 330
 331                         info(DI::l10n()->t('Empty post discarded.'));
 332                         if ($return_path) {
 333                                 DI::baseUrl()->redirect($return_path);
 334                         }
 335
 336                         throw new HTTPException\BadRequestException(DI::l10n()->t('Empty post discarded.'));
 337                 }
 338         }
 339
 340         if (!empty($categories)) {
 341                 // get the "fileas" tags for this post
 342                 $filedas = FileTag::fileToArray($categories);
 343         }
 344
 345         // save old and new categories, so we can determine what needs to be deleted from pconfig
 346         $categories_old = $categories;
 347         $categories = FileTag::listToFile(trim($_REQUEST['category'] ?? ''), 'category');
 348         $categories_new = $categories;
 349
 350         if (!empty($filedas) && is_array($filedas)) {
 351                 // append the fileas stuff to the new categories list
 352                 $categories .= FileTag::arrayToFile($filedas);
 353         }
 354
 355         // get contact info for poster
 356
 357         $author = null;
 358         $self   = false;
 359         $contact_id = 0;
 360
 361         if (local_user() && ((local_user() == $profile_uid) || $allow_comment)) {
 362                 $self = true;
 363                 $author = DBA::selectFirst('contact', [], ['uid' => local_user(), 'self' => true]);
 364         } elseif (!empty(Session::getRemoteContactID($profile_uid))) {
 365                 $author = DBA::selectFirst('contact', [], ['id' => Session::getRemoteContactID($profile_uid)]);
 366         }
 367
 368         if (DBA::isResult($author)) {
 369                 $contact_id = $author['id'];
 370         }
 371
 372         // get contact info for owner
 373         if ($profile_uid == local_user() || $allow_comment) {
 374                 $contact_record = $author;
 375         } else {
 376                 $contact_record = DBA::selectFirst('contact', [], ['uid' => $profile_uid, 'self' => true]);
 377         }
 378
 379         // Look for any tags and linkify them
 380         $str_tags = '';
 381         $inform   = '';
 382
 383         $tags = BBCode::getTags($body);
 384
 385         if ($thread_parent_id && !\Friendica\Content\Feature::isEnabled($uid, 'explicit_mentions')) {
 386                 $tags = item_add_implicit_mentions($tags, $thread_parent_contact, $thread_parent_id);
 387         }
 388
 389         $tagged = [];
 390
 391         $private_forum = false;
 392         $only_to_forum = false;
 393         $forum_contact = [];
 394
 395         if (count($tags)) {
 396                 foreach ($tags as $tag) {
 397                         $tag_type = substr($tag, 0, 1);
 398
 399                         if ($tag_type == Term::TAG_CHARACTER[Term::HASHTAG]) {
 400                                 continue;
 401                         }
 402
 403                         /*
 404                          * If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
 405                          * Robert Johnson should be first in the $tags array
 406                          */
 407                         $fullnametagged = false;
 408                         /// @TODO $tagged is initialized above if () block and is not filled, maybe old-lost code?
 409                         foreach ($tagged as $nextTag) {
 410                                 if (stristr($nextTag, $tag . ' ')) {
 411                                         $fullnametagged = true;
 412                                         break;
 413                                 }
 414                         }
 415                         if ($fullnametagged) {
 416                                 continue;
 417                         }
 418
 419                         $success = handle_tag($body, $inform, $str_tags, local_user() ? local_user() : $profile_uid, $tag, $network);
 420                         if ($success['replaced']) {
 421                                 $tagged[] = $tag;
 422                         }
 423                         // When the forum is private or the forum is addressed with a "!" make the post private
 424                         if (is_array($success['contact']) && (!empty($success['contact']['prv']) || ($tag_type == Term::TAG_CHARACTER[Term::EXCLUSIVE_MENTION]))) {
 425                                 $private_forum = $success['contact']['prv'];
 426                                 $only_to_forum = ($tag_type == Term::TAG_CHARACTER[Term::EXCLUSIVE_MENTION]);
 427                                 $private_id = $success['contact']['id'];
 428                                 $forum_contact = $success['contact'];
 429                         } elseif (is_array($success['contact']) && !empty($success['contact']['forum']) &&
 430                                 ($str_contact_allow == '<' . $success['contact']['id'] . '>')) {
 431                                 $private_forum = false;
 432                                 $only_to_forum = true;
 433                                 $private_id = $success['contact']['id'];
 434                                 $forum_contact = $success['contact'];
 435                         }
 436                 }
 437         }
 438
 439         $original_contact_id = $contact_id;
 440
 441         if (!$toplevel_item_id && count($forum_contact) && ($private_forum || $only_to_forum)) {
 442                 // we tagged a forum in a top level post. Now we change the post
 443                 $private = $private_forum;
 444
 445                 $str_group_allow = '';
 446                 $str_contact_deny = '';
 447                 $str_group_deny = '';
 448                 if ($private_forum) {
 449                         $str_contact_allow = '<' . $private_id . '>';
 450                 } else {
 451                         $str_contact_allow = '';
 452                 }
 453                 $contact_id = $private_id;
 454                 $contact_record = $forum_contact;
 455                 $_REQUEST['origin'] = false;
 456                 $wall = 0;
 457         }
 458
 459         /*
 460          * When a photo was uploaded into the message using the (profile wall) ajax
 461          * uploader, The permissions are initially set to disallow anybody but the
 462          * owner from seeing it. This is because the permissions may not yet have been
 463          * set for the post. If it's private, the photo permissions should be set
 464          * appropriately. But we didn't know the final permissions on the post until
 465          * now. So now we'll look for links of uploaded messages that are in the
 466          * post and set them to the same permissions as the post itself.
 467          */
 468
 469         $match = null;
 470
 471         if (!$preview && Photo::setPermissionFromBody($body, $uid, $original_contact_id, $str_contact_allow, $str_group_allow, $str_contact_deny, $str_group_deny)) {
 472                 $objecttype = Activity\ObjectType::IMAGE;
 473         }
 474
 475         /*
 476          * Next link in any attachment references we find in the post.
 477          */
 478         $match = false;
 479
 480         /// @todo these lines should be moved to Model/Attach (Once it exists)
 481         if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
 482                 $attaches = $match[1];
 483                 if (count($attaches)) {
 484                         foreach ($attaches as $attach) {
 485                                 // Ensure to only modify attachments that you own
 486                                 $srch = '<' . intval($original_contact_id) . '>';
 487
 488                                 $condition = ['allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
 489                                                 'id' => $attach];
 490                                 if (!Attach::exists($condition)) {
 491                                         continue;
 492                                 }
 493
 494                                 $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
 495                                                 'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
 496                                 $condition = ['id' => $attach];
 497                                 Attach::update($fields, $condition);
 498                         }
 499                 }
 500         }
 501
 502         // embedded bookmark or attachment in post? set bookmark flag
 503
 504         $data = BBCode::getAttachmentData($body);
 505         if ((preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data["type"]))
 506                 && ($posttype != Item::PT_PERSONAL_NOTE)) {
 507                 $posttype = Item::PT_PAGE;
 508                 $objecttype =  Activity\ObjectType::BOOKMARK;
 509         }
 510
 511         $body = DI::bbCodeVideo()->transform($body);
 512
 513         $body = BBCode::scaleExternalImages($body);
 514
 515         // Setting the object type if not defined before
 516         if (!$objecttype) {
 517                 $objecttype = Activity\ObjectType::NOTE; // Default value
 518                 $objectdata = BBCode::getAttachedData($body);
 519
 520                 if ($objectdata["type"] == "link") {
 521                         $objecttype = Activity\ObjectType::BOOKMARK;
 522                 } elseif ($objectdata["type"] == "video") {
 523                         $objecttype = Activity\ObjectType::VIDEO;
 524                 } elseif ($objectdata["type"] == "photo") {
 525                         $objecttype = Activity\ObjectType::IMAGE;
 526                 }
 527
 528         }
 529
 530         $attachments = '';
 531         $match = false;
 532
 533         if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
 534                 foreach ($match[2] as $mtch) {
 535                         $fields = ['id', 'filename', 'filesize', 'filetype'];
 536                         $attachment = Attach::selectFirst($fields, ['id' => $mtch]);
 537                         if ($attachment !== false) {
 538                                 if (strlen($attachments)) {
 539                                         $attachments .= ',';
 540                                 }
 541                                 $attachments .= '[attach]href="' . DI::baseUrl() . '/attach/' . $attachment['id'] .
 542                                                 '" length="' . $attachment['filesize'] . '" type="' . $attachment['filetype'] .
 543                                                 '" title="' . ($attachment['filename'] ? $attachment['filename'] : '') . '"[/attach]';
 544                         }
 545                         $body = str_replace($match[1],'',$body);
 546                 }
 547         }
 548
 549         if (!strlen($verb)) {
 550                 $verb = Activity::POST;
 551         }
 552
 553         if ($network == "") {
 554                 $network = Protocol::DFRN;
 555         }
 556
 557         $gravity = ($toplevel_item_id ? GRAVITY_COMMENT : GRAVITY_PARENT);
 558
 559         // even if the post arrived via API we are considering that it
 560         // originated on this site by default for determining relayability.
 561
 562         // Don't use "defaults" here. It would turn 0 to 1
 563         if (!isset($_REQUEST['origin'])) {
 564                 $origin = 1;
 565         } else {
 566                 $origin = $_REQUEST['origin'];
 567         }
 568
 569         $uri = ($message_id ? $message_id : Item::newURI($api_source ? $profile_uid : $uid, $guid));
 570
 571         // Fallback so that we alway have a parent uri
 572         if (!$thr_parent_uri || !$toplevel_item_id) {
 573                 $thr_parent_uri = $uri;
 574         }
 575
 576         $datarray = [];
 577         $datarray['uid']           = $profile_uid;
 578         $datarray['wall']          = $wall;
 579         $datarray['gravity']       = $gravity;
 580         $datarray['network']       = $network;
 581         $datarray['contact-id']    = $contact_id;
 582         $datarray['owner-name']    = $contact_record['name'];
 583         $datarray['owner-link']    = $contact_record['url'];
 584         $datarray['owner-avatar']  = $contact_record['thumb'];
 585         $datarray['owner-id']      = Contact::getIdForURL($datarray['owner-link']);
 586         $datarray['author-name']   = $author['name'];
 587         $datarray['author-link']   = $author['url'];
 588         $datarray['author-avatar'] = $author['thumb'];
 589         $datarray['author-id']     = Contact::getIdForURL($datarray['author-link']);
 590         $datarray['created']       = DateTimeFormat::utcNow();
 591         $datarray['edited']        = DateTimeFormat::utcNow();
 592         $datarray['commented']     = DateTimeFormat::utcNow();
 593         $datarray['received']      = DateTimeFormat::utcNow();
 594         $datarray['changed']       = DateTimeFormat::utcNow();
 595         $datarray['extid']         = $extid;
 596         $datarray['guid']          = $guid;
 597         $datarray['uri']           = $uri;
 598         $datarray['title']         = $title;
 599         $datarray['body']          = $body;
 600         $datarray['app']           = $app;
 601         $datarray['location']      = $location;
 602         $datarray['coord']         = $coord;
 603         $datarray['tag']           = $str_tags;
 604         $datarray['file']          = $categories;
 605         $datarray['inform']        = $inform;
 606         $datarray['verb']          = $verb;
 607         $datarray['post-type']     = $posttype;
 608         $datarray['object-type']   = $objecttype;
 609         $datarray['allow_cid']     = $str_contact_allow;
 610         $datarray['allow_gid']     = $str_group_allow;
 611         $datarray['deny_cid']      = $str_contact_deny;
 612         $datarray['deny_gid']      = $str_group_deny;
 613         $datarray['private']       = $private;
 614         $datarray['pubmail']       = $pubmail_enabled;
 615         $datarray['attach']        = $attachments;
 616
 617         // This is not a bug. The item store function changes 'parent-uri' to 'thr-parent' and fetches 'parent-uri' new. (We should change this)
 618         $datarray['parent-uri']    = $thr_parent_uri;
 619
 620         $datarray['postopts']      = $postopts;
 621         $datarray['origin']        = $origin;
 622         $datarray['moderated']     = false;
 623         $datarray['object']        = $object;
 624
 625         /*
 626          * These fields are for the convenience of addons...
 627          * 'self' if true indicates the owner is posting on their own wall
 628          * If parent is 0 it is a top-level post.
 629          */
 630         $datarray['parent']        = $toplevel_item_id;
 631         $datarray['self']          = $self;
 632
 633         // This triggers posts via API and the mirror functions
 634         $datarray['api_source'] = $api_source;
 635
 636         // This field is for storing the raw conversation data
 637         $datarray['protocol'] = Conversation::PARCEL_DFRN;
 638
 639         $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $datarray['parent-uri']]);
 640         if (DBA::isResult($conversation)) {
 641                 if ($conversation['conversation-uri'] != '') {
 642                         $datarray['conversation-uri'] = $conversation['conversation-uri'];
 643                 }
 644                 if ($conversation['conversation-href'] != '') {
 645                         $datarray['conversation-href'] = $conversation['conversation-href'];
 646                 }
 647         }
 648
 649         if ($orig_post) {
 650                 $datarray['edit'] = true;
 651         } else {
 652                 // If this was a share, add missing data here
 653                 $datarray = Item::addShareDataFromOriginal($datarray);
 654
 655                 $datarray['edit'] = false;
 656         }
 657
 658         // Check for hashtags in the body and repair or add hashtag links
 659         if ($preview || $orig_post) {
 660                 Item::setHashtags($datarray);
 661         }
 662
 663         // preview mode - prepare the body for display and send it via json
 664         if ($preview) {
 665                 // We set the datarray ID to -1 because in preview mode the dataray
 666                 // doesn't have an ID.
 667                 $datarray["id"] = -1;
 668                 $datarray["item_id"] = -1;
 669                 $datarray["author-network"] = Protocol::DFRN;
 670
 671                 $o = conversation($a, [array_merge($contact_record, $datarray)], 'search', false, true);
 672
 673                 System::jsonExit(['preview' => $o]);
 674         }
 675
 676         Hook::callAll('post_local',$datarray);
 677
 678         if (!empty($datarray['cancel'])) {
 679                 Logger::info('mod_item: post cancelled by addon.');
 680                 if ($return_path) {
 681                         DI::baseUrl()->redirect($return_path);
 682                 }
 683
 684                 $json = ['cancel' => 1];
 685                 if (!empty($_REQUEST['jsreload'])) {
 686                         $json['reload'] = DI::baseUrl() . '/' . $_REQUEST['jsreload'];
 687                 }
 688
 689                 System::jsonExit($json);
 690         }
 691
 692         if ($orig_post) {
 693                 // Fill the cache field
 694                 // This could be done in Item::update as well - but we have to check for the existance of some fields.
 695                 Item::putInCache($datarray);
 696
 697                 $fields = [
 698                         'title' => $datarray['title'],
 699                         'body' => $datarray['body'],
 700                         'tag' => $datarray['tag'],
 701                         'attach' => $datarray['attach'],
 702                         'file' => $datarray['file'],
 703                         'rendered-html' => $datarray['rendered-html'],
 704                         'rendered-hash' => $datarray['rendered-hash'],
 705                         'edited' => DateTimeFormat::utcNow(),
 706                         'changed' => DateTimeFormat::utcNow()];
 707
 708                 Item::update($fields, ['id' => $post_id]);
 709
 710                 // update filetags in pconfig
 711                 FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
 712
 713                 info(DI::l10n()->t('Post updated.'));
 714                 if ($return_path) {
 715                         DI::baseUrl()->redirect($return_path);
 716                 }
 717
 718                 throw new HTTPException\OKException(DI::l10n()->t('Post updated.'));
 719         }
 720
 721         unset($datarray['edit']);
 722         unset($datarray['self']);
 723         unset($datarray['api_source']);
 724
 725         if ($origin) {
 726                 $signed = Diaspora::createCommentSignature($uid, $datarray);
 727                 if (!empty($signed)) {
 728                         $datarray['diaspora_signed_text'] = json_encode($signed);
 729                 }
 730         }
 731
 732         $post_id = Item::insert($datarray);
 733
 734         if (!$post_id) {
 735                 info(DI::l10n()->t('Item wasn\'t stored.'));
 736                 if ($return_path) {
 737                         DI::baseUrl()->redirect($return_path);
 738                 }
 739
 740                 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item wasn\'t stored.'));
 741         }
 742
 743         $datarray = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 744
 745         if (!DBA::isResult($datarray)) {
 746                 Logger::error('Item couldn\'t be fetched.', ['post_id' => $post_id]);
 747                 if ($return_path) {
 748                         DI::baseUrl()->redirect($return_path);
 749                 }
 750
 751                 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item couldn\'t be fetched.'));
 752         }
 753
 754         Tag::storeFromBody($datarray['uri-id'], $datarray['body']);
 755
 756         // update filetags in pconfig
 757         FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
 758
 759         // These notifications are sent if someone else is commenting other your wall
 760         if ($toplevel_item_id) {
 761                 if ($contact_record != $author) {
 762                         notification([
 763                                 'type'         => Type::COMMENT,
 764                                 'notify_flags' => $user['notify-flags'],
 765                                 'language'     => $user['language'],
 766                                 'to_name'      => $user['username'],
 767                                 'to_email'     => $user['email'],
 768                                 'uid'          => $user['uid'],
 769                                 'item'         => $datarray,
 770                                 'link'         => DI::baseUrl().'/display/'.urlencode($datarray['guid']),
 771                                 'source_name'  => $datarray['author-name'],
 772                                 'source_link'  => $datarray['author-link'],
 773                                 'source_photo' => $datarray['author-avatar'],
 774                                 'verb'         => Activity::POST,
 775                                 'otype'        => 'item',
 776                                 'parent'       => $toplevel_item_id,
 777                                 'parent_uri'   => $toplevel_item['uri']
 778                         ]);
 779                 }
 780         } else {
 781                 if (($contact_record != $author) && !count($forum_contact)) {
 782                         notification([
 783                                 'type'         => Type::WALL,
 784                                 'notify_flags' => $user['notify-flags'],
 785                                 'language'     => $user['language'],
 786                                 'to_name'      => $user['username'],
 787                                 'to_email'     => $user['email'],
 788                                 'uid'          => $user['uid'],
 789                                 'item'         => $datarray,
 790                                 'link'         => DI::baseUrl().'/display/'.urlencode($datarray['guid']),
 791                                 'source_name'  => $datarray['author-name'],
 792                                 'source_link'  => $datarray['author-link'],
 793                                 'source_photo' => $datarray['author-avatar'],
 794                                 'verb'         => Activity::POST,
 795                                 'otype'        => 'item'
 796                         ]);
 797                 }
 798         }
 799
 800         Hook::callAll('post_local_end', $datarray);
 801
 802         if (strlen($emailcc) && $profile_uid == local_user()) {
 803                 $recipients = explode(',', $emailcc);
 804                 if (count($recipients)) {
 805                         foreach ($recipients as $recipient) {
 806                                 $address = trim($recipient);
 807                                 if (!strlen($address)) {
 808                                         continue;
 809                                 }
 810                                 DI::emailer()->send(new ItemCCEMail(DI::app(), DI::l10n(), DI::baseUrl(),
 811                                         $datarray, $address, $author['thumb'] ?? ''));
 812                         }
 813                 }
 814         }
 815
 816         // Insert an item entry for UID=0 for global entries.
 817         // We now do it in the background to save some time.
 818         // This is important in interactive environments like the frontend or the API.
 819         // We don't fork a new process since this is done anyway with the following command
 820         Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], "CreateShadowEntry", $post_id);
 821
 822         // When we are doing some forum posting via ! we have to start the notifier manually.
 823         // These kind of posts don't initiate the notifier call in the item class.
 824         if ($only_to_forum) {
 825                 Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => false], "Notifier", Delivery::POST, $post_id);
 826         }
 827
 828         Logger::info('post_complete');
 829
 830         if ($api_source) {
 831                 return $post_id;
 832         }
 833
 834         info(DI::l10n()->t('Post published.'));
 835         item_post_return(DI::baseUrl(), $api_source, $return_path);
 836         // NOTREACHED
 837 }
 838
 839 function item_post_return($baseurl, $api_source, $return_path)
 840 {
 841         if ($api_source) {
 842                 return;
 843         }
 844
 845         if ($return_path) {
 846                 DI::baseUrl()->redirect($return_path);
 847         }
 848
 849         $json = ['success' => 1];
 850         if (!empty($_REQUEST['jsreload'])) {
 851                 $json['reload'] = $baseurl . '/' . $_REQUEST['jsreload'];
 852         }
 853
 854         Logger::info('post_json', ['json' => $json]);
 855
 856         System::jsonExit($json);
 857 }
 858
 859 function item_content(App $a)
 860 {
 861         if (!Session::isAuthenticated()) {
 862                 return;
 863         }
 864
 865         $o = '';
 866
 867         if (($a->argc >= 3) && ($a->argv[1] === 'drop') && intval($a->argv[2])) {
 868                 if (DI::mode()->isAjax()) {
 869                         $o = Item::deleteForUser(['id' => $a->argv[2]], local_user());
 870                 } else {
 871                         if (!empty($a->argv[3])) {
 872                                 $o = drop_item($a->argv[2], $a->argv[3]);
 873                         }
 874                         else {
 875                                 $o = drop_item($a->argv[2]);
 876                         }
 877                 }
 878
 879                 if (DI::mode()->isAjax()) {
 880                         // ajax return: [<item id>, 0 (no perm) | <owner id>]
 881                         System::jsonExit([intval($a->argv[2]), intval($o)]);
 882                 }
 883         }
 884
 885         return $o;
 886 }
 887
 888 /**
 889  * This function removes the tag $tag from the text $body and replaces it with
 890  * the appropriate link.
 891  *
 892  * @param App     $a
 893  * @param string  $body     the text to replace the tag in
 894  * @param string  $inform   a comma-seperated string containing everybody to inform
 895  * @param string  $str_tags string to add the tag to
 896  * @param integer $profile_uid
 897  * @param string  $tag      the tag to replace
 898  * @param string  $network  The network of the post
 899  *
 900  * @return array|bool ['replaced' => $replaced, 'contact' => $contact];
 901  * @throws ImagickException
 902  * @throws HTTPException\InternalServerErrorException
 903  */
 904 function handle_tag(&$body, &$inform, &$str_tags, $profile_uid, $tag, $network = "")
 905 {
 906         $replaced = false;
 907         $r = null;
 908
 909         //is it a person tag?
 910         if (Term::isType($tag, Term::MENTION, Term::IMPLICIT_MENTION, Term::EXCLUSIVE_MENTION)) {
 911                 $tag_type = substr($tag, 0, 1);
 912                 //is it already replaced?
 913                 if (strpos($tag, '[url=')) {
 914                         //append tag to str_tags
 915                         if (!stristr($str_tags, $tag)) {
 916                                 if (strlen($str_tags)) {
 917                                         $str_tags .= ',';
 918                                 }
 919                                 $str_tags .= $tag;
 920                         }
 921
 922                         // Checking for the alias that is used for OStatus
 923                         $pattern = "/[@!]\[url\=(.*?)\](.*?)\[\/url\]/ism";
 924                         if (preg_match($pattern, $tag, $matches)) {
 925                                 $data = Contact::getDetailsByURL($matches[1]);
 926
 927                                 if ($data["alias"] != "") {
 928                                         $newtag = '@[url=' . $data["alias"] . ']' . $data["nick"] . '[/url]';
 929
 930                                         if (!stripos($str_tags, '[url=' . $data["alias"] . ']')) {
 931                                                 if (strlen($str_tags)) {
 932                                                         $str_tags .= ',';
 933                                                 }
 934
 935                                                 $str_tags .= $newtag;
 936                                         }
 937                                 }
 938                         }
 939
 940                         return $replaced;
 941                 }
 942
 943                 //get the person's name
 944                 $name = substr($tag, 1);
 945
 946                 // Sometimes the tag detection doesn't seem to work right
 947                 // This is some workaround
 948                 $nameparts = explode(" ", $name);
 949                 $name = $nameparts[0];
 950
 951                 // Try to detect the contact in various ways
 952                 if (strpos($name, 'http://')) {
 953                         // At first we have to ensure that the contact exists
 954                         Contact::getIdForURL($name);
 955
 956                         // Now we should have something
 957                         $contact = Contact::getDetailsByURL($name);
 958                 } elseif (strpos($name, '@')) {
 959                         // This function automatically probes when no entry was found
 960                         $contact = Contact::getDetailsByAddr($name);
 961                 } else {
 962                         $contact = false;
 963                         $fields = ['id', 'url', 'nick', 'name', 'alias', 'network', 'forum', 'prv'];
 964
 965                         if (strrpos($name, '+')) {
 966                                 // Is it in format @nick+number?
 967                                 $tagcid = intval(substr($name, strrpos($name, '+') + 1));
 968                                 $contact = DBA::selectFirst('contact', $fields, ['id' => $tagcid, 'uid' => $profile_uid]);
 969                         }
 970
 971                         // select someone by nick or attag in the current network
 972                         if (!DBA::isResult($contact) && ($network != "")) {
 973                                 $condition = ["(`nick` = ? OR `attag` = ?) AND `network` = ? AND `uid` = ?",
 974                                                 $name, $name, $network, $profile_uid];
 975                                 $contact = DBA::selectFirst('contact', $fields, $condition);
 976                         }
 977
 978                         //select someone by name in the current network
 979                         if (!DBA::isResult($contact) && ($network != "")) {
 980                                 $condition = ['name' => $name, 'network' => $network, 'uid' => $profile_uid];
 981                                 $contact = DBA::selectFirst('contact', $fields, $condition);
 982                         }
 983
 984                         // select someone by nick or attag in any network
 985                         if (!DBA::isResult($contact)) {
 986                                 $condition = ["(`nick` = ? OR `attag` = ?) AND `uid` = ?", $name, $name, $profile_uid];
 987                                 $contact = DBA::selectFirst('contact', $fields, $condition);
 988                         }
 989
 990                         // select someone by name in any network
 991                         if (!DBA::isResult($contact)) {
 992                                 $condition = ['name' => $name, 'uid' => $profile_uid];
 993                                 $contact = DBA::selectFirst('contact', $fields, $condition);
 994                         }
 995                 }
 996
 997                 // Check if $contact has been successfully loaded
 998                 if (DBA::isResult($contact)) {
 999                         if (strlen($inform) && (isset($contact["notify"]) || isset($contact["id"]))) {
1000                                 $inform .= ',';
1001                         }
1002
1003                         if (isset($contact["id"])) {
1004                                 $inform .= 'cid:' . $contact["id"];
1005                         } elseif (isset($contact["notify"])) {
1006                                 $inform  .= $contact["notify"];
1007                         }
1008
1009                         $profile = $contact["url"];
1010                         $alias   = $contact["alias"];
1011                         $newname = ($contact["name"] ?? '') ?: $contact["nick"];
1012                 }
1013
1014                 //if there is an url for this persons profile
1015                 if (isset($profile) && ($newname != "")) {
1016                         $replaced = true;
1017                         // create profile link
1018                         $profile = str_replace(',', '%2c', $profile);
1019                         $newtag = $tag_type.'[url=' . $profile . ']' . $newname . '[/url]';
1020                         $body = str_replace($tag_type . $name, $newtag, $body);
1021                         // append tag to str_tags
1022                         if (!stristr($str_tags, $newtag)) {
1023                                 if (strlen($str_tags)) {
1024                                         $str_tags .= ',';
1025                                 }
1026                                 $str_tags .= $newtag;
1027                         }
1028
1029                         /*
1030                          * Status.Net seems to require the numeric ID URL in a mention if the person isn't
1031                          * subscribed to you. But the nickname URL is OK if they are. Grrr. We'll tag both.
1032                          */
1033                         if (!empty($alias)) {
1034                                 $newtag = '@[url=' . $alias . ']' . $newname . '[/url]';
1035                                 if (!stripos($str_tags, '[url=' . $alias . ']')) {
1036                                         if (strlen($str_tags)) {
1037                                                 $str_tags .= ',';
1038                                         }
1039                                         $str_tags .= $newtag;
1040                                 }
1041                         }
1042                 }
1043         }
1044
1045         return ['replaced' => $replaced, 'contact' => $contact];
1046 }
1047
1048 function item_add_implicit_mentions(array $tags, array $thread_parent_contact, $thread_parent_id)
1049 {
1050         if (DI::config()->get('system', 'disable_implicit_mentions')) {
1051                 // Add a tag if the parent contact is from ActivityPub or OStatus (This will notify them)
1052                 if (in_array($thread_parent_contact['network'], [Protocol::OSTATUS, Protocol::ACTIVITYPUB])) {
1053                         $contact = Term::TAG_CHARACTER[Term::MENTION] . '[url=' . $thread_parent_contact['url'] . ']' . $thread_parent_contact['nick'] . '[/url]';
1054                         if (!stripos(implode($tags), '[url=' . $thread_parent_contact['url'] . ']')) {
1055                                 $tags[] = $contact;
1056                         }
1057                 }
1058         } else {
1059                 $implicit_mentions = [
1060                         $thread_parent_contact['url'] => $thread_parent_contact['nick']
1061                 ];
1062
1063                 $parent_terms = Term::tagArrayFromItemId($thread_parent_id, [Term::MENTION, Term::IMPLICIT_MENTION]);
1064
1065                 foreach ($parent_terms as $parent_term) {
1066                         $implicit_mentions[$parent_term['url']] = $parent_term['term'];
1067                 }
1068
1069                 foreach ($implicit_mentions as $url => $label) {
1070                         if ($url != \Friendica\Model\Profile::getMyURL() && !stripos(implode($tags), '[url=' . $url . ']')) {
1071                                 $tags[] = Term::TAG_CHARACTER[Term::IMPLICIT_MENTION] . '[url=' . $url . ']' . $label . '[/url]';
1072                         }
1073                 }
1074         }
1075
1076         return $tags;
1077 }