mod/item.php

   1 <?php
   2 /**
   3  * @file mod/item.php
   4  */
   5
   6 /*
   7  * This is the POST destination for most all locally posted
   8  * text stuff. This function handles status, wall-to-wall status,
   9  * local comments, and remote coments that are posted on this site
  10  * (as opposed to being delivered in a feed).
  11  * Also processed here are posts and comments coming through the
  12  * statusnet/twitter API.
  13  *
  14  * All of these become an "item" which is our basic unit of
  15  * information.
  16  */
  17
  18 use Friendica\App;
  19 use Friendica\Content\Pager;
  20 use Friendica\Content\Text\BBCode;
  21 use Friendica\Content\Text\HTML;
  22 use Friendica\Core\Hook;
  23 use Friendica\Core\Logger;
  24 use Friendica\Core\Protocol;
  25 use Friendica\Core\Session;
  26 use Friendica\Core\System;
  27 use Friendica\Core\Worker;
  28 use Friendica\Database\DBA;
  29 use Friendica\DI;
  30 use Friendica\Model\Attach;
  31 use Friendica\Model\Contact;
  32 use Friendica\Model\Conversation;
  33 use Friendica\Model\FileTag;
  34 use Friendica\Model\Item;
  35 use Friendica\Model\Photo;
  36 use Friendica\Model\Term;
  37 use Friendica\Protocol\Activity;
  38 use Friendica\Protocol\Diaspora;
  39 use Friendica\Protocol\Email;
  40 use Friendica\Util\DateTimeFormat;
  41 use Friendica\Util\Emailer;
  42 use Friendica\Util\Security;
  43 use Friendica\Util\Strings;
  44 use Friendica\Worker\Delivery;
  45
  46 require_once __DIR__ . '/../include/items.php';
  47
  48 function item_post(App $a) {
  49         if (!Session::isAuthenticated()) {
  50                 return 0;
  51         }
  52
  53         $uid = local_user();
  54
  55         if (!empty($_REQUEST['dropitems'])) {
  56                 $arr_drop = explode(',', $_REQUEST['dropitems']);
  57                 drop_items($arr_drop);
  58                 $json = ['success' => 1];
  59                 echo json_encode($json);
  60                 exit();
  61         }
  62
  63         Hook::callAll('post_local_start', $_REQUEST);
  64
  65         Logger::log('postvars ' . print_r($_REQUEST, true), Logger::DATA);
  66
  67         $api_source = $_REQUEST['api_source'] ?? false;
  68
  69         $message_id = ((!empty($_REQUEST['message_id']) && $api_source) ? strip_tags($_REQUEST['message_id']) : '');
  70
  71         $return_path = $_REQUEST['return'] ?? '';
  72         $preview = intval($_REQUEST['preview'] ?? 0);
  73
  74         /*
  75          * Check for doubly-submitted posts, and reject duplicates
  76          * Note that we have to ignore previews, otherwise nothing will post
  77          * after it's been previewed
  78          */
  79         if (!$preview && !empty($_REQUEST['post_id_random'])) {
  80                 if (!empty($_SESSION['post-random']) && $_SESSION['post-random'] == $_REQUEST['post_id_random']) {
  81                         Logger::log("item post: duplicate post", Logger::DEBUG);
  82                         item_post_return(DI::baseUrl(), $api_source, $return_path);
  83                 } else {
  84                         $_SESSION['post-random'] = $_REQUEST['post_id_random'];
  85                 }
  86         }
  87
  88         // Is this a reply to something?
  89         $toplevel_item_id = intval($_REQUEST['parent'] ?? 0);
  90         $thr_parent_uri = trim($_REQUEST['parent_uri'] ?? '');
  91
  92         $thread_parent_id = 0;
  93         $thread_parent_contact = null;
  94
  95         $toplevel_item = null;
  96         $parent_user = null;
  97
  98         $parent_contact = null;
  99
 100         $objecttype = null;
 101         $profile_uid = ($_REQUEST['profile_uid'] ?? 0) ?: local_user();
 102         $posttype = ($_REQUEST['post_type'] ?? '') ?: Item::PT_ARTICLE;
 103
 104         if ($toplevel_item_id || $thr_parent_uri) {
 105                 if ($toplevel_item_id) {
 106                         $toplevel_item = Item::selectFirst([], ['id' => $toplevel_item_id]);
 107                 } elseif ($thr_parent_uri) {
 108                         $toplevel_item = Item::selectFirst([], ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
 109                 }
 110
 111                 // if this isn't the top-level parent of the conversation, find it
 112                 if (DBA::isResult($toplevel_item)) {
 113                         // The URI and the contact is taken from the direct parent which needn't to be the top parent
 114                         $thread_parent_id = $toplevel_item['id'];
 115                         $thr_parent_uri = $toplevel_item['uri'];
 116                         $thread_parent_contact = Contact::getDetailsByURL($toplevel_item["author-link"]);
 117
 118                         if ($toplevel_item['id'] != $toplevel_item['parent']) {
 119                                 $toplevel_item = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $toplevel_item['parent']]);
 120                         }
 121                 }
 122
 123                 if (!DBA::isResult($toplevel_item)) {
 124                         notice(DI::l10n()->t('Unable to locate original post.') . EOL);
 125                         if (!empty($_REQUEST['return'])) {
 126                                 DI::baseUrl()->redirect($return_path);
 127                         }
 128                         exit();
 129                 }
 130
 131                 $toplevel_item_id = $toplevel_item['id'];
 132                 $parent_user = $toplevel_item['uid'];
 133
 134                 $objecttype = Activity\ObjectType::COMMENT;
 135         }
 136
 137         if ($toplevel_item_id) {
 138                 Logger::info('mod_item: item_post parent=' . $toplevel_item_id);
 139         }
 140
 141         $post_id     = intval($_REQUEST['post_id'] ?? 0);
 142         $app         = strip_tags($_REQUEST['source'] ?? '');
 143         $extid       = strip_tags($_REQUEST['extid'] ?? '');
 144         $object      = $_REQUEST['object'] ?? '';
 145
 146         // Don't use "defaults" here. It would turn 0 to 1
 147         if (!isset($_REQUEST['wall'])) {
 148                 $wall = 1;
 149         } else {
 150                 $wall = $_REQUEST['wall'];
 151         }
 152
 153         // Ensure that the user id in a thread always stay the same
 154         if (!is_null($parent_user) && in_array($parent_user, [local_user(), 0])) {
 155                 $profile_uid = $parent_user;
 156         }
 157
 158         // Check for multiple posts with the same message id (when the post was created via API)
 159         if (($message_id != '') && ($profile_uid != 0)) {
 160                 if (Item::exists(['uri' => $message_id, 'uid' => $profile_uid])) {
 161                         Logger::log("Message with URI ".$message_id." already exists for user ".$profile_uid, Logger::DEBUG);
 162                         return 0;
 163                 }
 164         }
 165
 166         // Allow commenting if it is an answer to a public post
 167         $allow_comment = local_user() && ($profile_uid == 0) && $toplevel_item_id && in_array($toplevel_item['network'], Protocol::FEDERATED);
 168
 169         // Now check that valid personal details have been provided
 170         if (!Security::canWriteToUserWall($profile_uid) && !$allow_comment) {
 171                 notice(DI::l10n()->t('Permission denied.') . EOL);
 172
 173                 if (!empty($_REQUEST['return'])) {
 174                         DI::baseUrl()->redirect($return_path);
 175                 }
 176
 177                 exit();
 178         }
 179
 180         // Init post instance
 181         $orig_post = null;
 182
 183         // is this an edited post?
 184         if ($post_id > 0) {
 185                 $orig_post = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 186         }
 187
 188         $user = DBA::selectFirst('user', [], ['uid' => $profile_uid]);
 189
 190         if (!DBA::isResult($user) && !$toplevel_item_id) {
 191                 return 0;
 192         }
 193
 194         $categories = '';
 195         $postopts = '';
 196         $emailcc = '';
 197         $body = $_REQUEST['body'] ?? '';
 198         $has_attachment = $_REQUEST['has_attachment'] ?? 0;
 199
 200         // If we have a speparate attachment, we need to add it to the body.
 201         if (!empty($has_attachment)) {
 202                 $attachment_type  = $_REQUEST['attachment_type'] ??  '';
 203                 $attachment_title = $_REQUEST['attachment_title'] ?? '';
 204                 $attachment_text  = $_REQUEST['attachment_text'] ??  '';
 205
 206                 $attachment_url     = hex2bin($_REQUEST['attachment_url'] ??     '');
 207                 $attachment_img_src = hex2bin($_REQUEST['attachment_img_src'] ?? '');
 208
 209                 $attachment_img_width  = $_REQUEST['attachment_img_width'] ??  0;
 210                 $attachment_img_height = $_REQUEST['attachment_img_height'] ?? 0;
 211                 $attachment = [
 212                         'type'   => $attachment_type,
 213                         'title'  => $attachment_title,
 214                         'text'   => $attachment_text,
 215                         'url'    => $attachment_url,
 216                 ];
 217
 218                 if (!empty($attachment_img_src)) {
 219                         $attachment['images'] = [
 220                                 0 => [
 221                                         'src'    => $attachment_img_src,
 222                                         'width'  => $attachment_img_width,
 223                                         'height' => $attachment_img_height
 224                                 ]
 225                         ];
 226                 }
 227
 228                 $att_bbcode = add_page_info_data($attachment);
 229                 $body .= $att_bbcode;
 230         }
 231
 232         // Convert links with empty descriptions to links without an explicit description
 233         $body = preg_replace('#\[url=([^\]]*?)\]\[/url\]#ism', '[url]$1[/url]', $body);
 234
 235         if (!empty($orig_post)) {
 236                 $str_group_allow   = $orig_post['allow_gid'];
 237                 $str_contact_allow = $orig_post['allow_cid'];
 238                 $str_group_deny    = $orig_post['deny_gid'];
 239                 $str_contact_deny  = $orig_post['deny_cid'];
 240                 $location          = $orig_post['location'];
 241                 $coord             = $orig_post['coord'];
 242                 $verb              = $orig_post['verb'];
 243                 $objecttype        = $orig_post['object-type'];
 244                 $app               = $orig_post['app'];
 245                 $categories        = $orig_post['file'];
 246                 $title             = Strings::escapeTags(trim($_REQUEST['title']));
 247                 $body              = trim($body);
 248                 $private           = $orig_post['private'];
 249                 $pubmail_enabled   = $orig_post['pubmail'];
 250                 $network           = $orig_post['network'];
 251                 $guid              = $orig_post['guid'];
 252                 $extid             = $orig_post['extid'];
 253
 254         } else {
 255
 256                 /*
 257                  * if coming from the API and no privacy settings are set,
 258                  * use the user default permissions - as they won't have
 259                  * been supplied via a form.
 260                  */
 261                 if ($api_source
 262                         && !array_key_exists('contact_allow', $_REQUEST)
 263                         && !array_key_exists('group_allow', $_REQUEST)
 264                         && !array_key_exists('contact_deny', $_REQUEST)
 265                         && !array_key_exists('group_deny', $_REQUEST)) {
 266                         $str_group_allow   = $user['allow_gid'];
 267                         $str_contact_allow = $user['allow_cid'];
 268                         $str_group_deny    = $user['deny_gid'];
 269                         $str_contact_deny  = $user['deny_cid'];
 270                 } else {
 271                         // use the posted permissions
 272
 273                         $aclFormatter = DI::aclFormatter();
 274
 275                         $str_group_allow   = $aclFormatter->toString($_REQUEST['group_allow'] ?? '');
 276                         $str_contact_allow = $aclFormatter->toString($_REQUEST['contact_allow'] ?? '');
 277                         $str_group_deny    = $aclFormatter->toString($_REQUEST['group_deny'] ?? '');
 278                         $str_contact_deny  = $aclFormatter->toString($_REQUEST['contact_deny'] ?? '');
 279                 }
 280
 281                 $title             = Strings::escapeTags(trim($_REQUEST['title']    ?? ''));
 282                 $location          = Strings::escapeTags(trim($_REQUEST['location'] ?? ''));
 283                 $coord             = Strings::escapeTags(trim($_REQUEST['coord']    ?? ''));
 284                 $verb              = Strings::escapeTags(trim($_REQUEST['verb']     ?? ''));
 285                 $emailcc           = Strings::escapeTags(trim($_REQUEST['emailcc']  ?? ''));
 286                 $body              = trim($body);
 287                 $network           = Strings::escapeTags(trim(($_REQUEST['network']  ?? '') ?: Protocol::DFRN));
 288                 $guid              = System::createUUID();
 289
 290                 $postopts = $_REQUEST['postopts'] ?? '';
 291
 292                 $private = ((strlen($str_group_allow) || strlen($str_contact_allow) || strlen($str_group_deny) || strlen($str_contact_deny)) ? 1 : 0);
 293
 294                 // If this is a comment, set the permissions from the parent.
 295
 296                 if ($toplevel_item) {
 297                         // for non native networks use the network of the original post as network of the item
 298                         if (($toplevel_item['network'] != Protocol::DIASPORA)
 299                                 && ($toplevel_item['network'] != Protocol::OSTATUS)
 300                                 && ($network == "")) {
 301                                 $network = $toplevel_item['network'];
 302                         }
 303
 304                         $str_contact_allow = $toplevel_item['allow_cid'];
 305                         $str_group_allow   = $toplevel_item['allow_gid'];
 306                         $str_contact_deny  = $toplevel_item['deny_cid'];
 307                         $str_group_deny    = $toplevel_item['deny_gid'];
 308                         $private           = $toplevel_item['private'];
 309
 310                         $wall              = $toplevel_item['wall'];
 311                 }
 312
 313                 $pubmail_enabled = ($_REQUEST['pubmail_enable'] ?? false) && !$private;
 314
 315                 // if using the API, we won't see pubmail_enable - figure out if it should be set
 316                 if ($api_source && $profile_uid && $profile_uid == local_user() && !$private) {
 317                         if (function_exists('imap_open') && !DI::config()->get('system', 'imap_disabled')) {
 318                                 $pubmail_enabled = DBA::exists('mailacct', ["`uid` = ? AND `server` != ? AND `pubmail`", local_user(), '']);
 319                         }
 320                 }
 321
 322                 if (!strlen($body)) {
 323                         if ($preview) {
 324                                 exit();
 325                         }
 326                         info(DI::l10n()->t('Empty post discarded.') . EOL);
 327                         if (!empty($_REQUEST['return'])) {
 328                                 DI::baseUrl()->redirect($return_path);
 329                         }
 330                         exit();
 331                 }
 332         }
 333
 334         if (!empty($categories)) {
 335                 // get the "fileas" tags for this post
 336                 $filedas = FileTag::fileToArray($categories);
 337         }
 338
 339         // save old and new categories, so we can determine what needs to be deleted from pconfig
 340         $categories_old = $categories;
 341         $categories = FileTag::listToFile(trim($_REQUEST['category'] ?? ''), 'category');
 342         $categories_new = $categories;
 343
 344         if (!empty($filedas) && is_array($filedas)) {
 345                 // append the fileas stuff to the new categories list
 346                 $categories .= FileTag::arrayToFile($filedas);
 347         }
 348
 349         // get contact info for poster
 350
 351         $author = null;
 352         $self   = false;
 353         $contact_id = 0;
 354
 355         if (local_user() && ((local_user() == $profile_uid) || $allow_comment)) {
 356                 $self = true;
 357                 $author = DBA::selectFirst('contact', [], ['uid' => local_user(), 'self' => true]);
 358         } elseif (!empty(Session::getRemoteContactID($profile_uid))) {
 359                 $author = DBA::selectFirst('contact', [], ['id' => Session::getRemoteContactID($profile_uid)]);
 360         }
 361
 362         if (DBA::isResult($author)) {
 363                 $contact_id = $author['id'];
 364         }
 365
 366         // get contact info for owner
 367         if ($profile_uid == local_user() || $allow_comment) {
 368                 $contact_record = $author;
 369         } else {
 370                 $contact_record = DBA::selectFirst('contact', [], ['uid' => $profile_uid, 'self' => true]);
 371         }
 372
 373         // Look for any tags and linkify them
 374         $str_tags = '';
 375         $inform   = '';
 376
 377         $tags = BBCode::getTags($body);
 378
 379         if ($thread_parent_id && !\Friendica\Content\Feature::isEnabled($uid, 'explicit_mentions')) {
 380                 $tags = item_add_implicit_mentions($tags, $thread_parent_contact, $thread_parent_id);
 381         }
 382
 383         $tagged = [];
 384
 385         $private_forum = false;
 386         $only_to_forum = false;
 387         $forum_contact = [];
 388
 389         if (count($tags)) {
 390                 foreach ($tags as $tag) {
 391                         $tag_type = substr($tag, 0, 1);
 392
 393                         if ($tag_type == Term::TAG_CHARACTER[Term::HASHTAG]) {
 394                                 continue;
 395                         }
 396
 397                         /*
 398                          * If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
 399                          * Robert Johnson should be first in the $tags array
 400                          */
 401                         $fullnametagged = false;
 402                         /// @TODO $tagged is initialized above if () block and is not filled, maybe old-lost code?
 403                         foreach ($tagged as $nextTag) {
 404                                 if (stristr($nextTag, $tag . ' ')) {
 405                                         $fullnametagged = true;
 406                                         break;
 407                                 }
 408                         }
 409                         if ($fullnametagged) {
 410                                 continue;
 411                         }
 412
 413                         $success = handle_tag($body, $inform, $str_tags, local_user() ? local_user() : $profile_uid, $tag, $network);
 414                         if ($success['replaced']) {
 415                                 $tagged[] = $tag;
 416                         }
 417                         // When the forum is private or the forum is addressed with a "!" make the post private
 418                         if (is_array($success['contact']) && (!empty($success['contact']['prv']) || ($tag_type == Term::TAG_CHARACTER[Term::EXCLUSIVE_MENTION]))) {
 419                                 $private_forum = $success['contact']['prv'];
 420                                 $only_to_forum = ($tag_type == Term::TAG_CHARACTER[Term::EXCLUSIVE_MENTION]);
 421                                 $private_id = $success['contact']['id'];
 422                                 $forum_contact = $success['contact'];
 423                         } elseif (is_array($success['contact']) && !empty($success['contact']['forum']) &&
 424                                 ($str_contact_allow == '<' . $success['contact']['id'] . '>')) {
 425                                 $private_forum = false;
 426                                 $only_to_forum = true;
 427                                 $private_id = $success['contact']['id'];
 428                                 $forum_contact = $success['contact'];
 429                         }
 430                 }
 431         }
 432
 433         $original_contact_id = $contact_id;
 434
 435         if (!$toplevel_item_id && count($forum_contact) && ($private_forum || $only_to_forum)) {
 436                 // we tagged a forum in a top level post. Now we change the post
 437                 $private = $private_forum;
 438
 439                 $str_group_allow = '';
 440                 $str_contact_deny = '';
 441                 $str_group_deny = '';
 442                 if ($private_forum) {
 443                         $str_contact_allow = '<' . $private_id . '>';
 444                 } else {
 445                         $str_contact_allow = '';
 446                 }
 447                 $contact_id = $private_id;
 448                 $contact_record = $forum_contact;
 449                 $_REQUEST['origin'] = false;
 450                 $wall = 0;
 451         }
 452
 453         /*
 454          * When a photo was uploaded into the message using the (profile wall) ajax
 455          * uploader, The permissions are initially set to disallow anybody but the
 456          * owner from seeing it. This is because the permissions may not yet have been
 457          * set for the post. If it's private, the photo permissions should be set
 458          * appropriately. But we didn't know the final permissions on the post until
 459          * now. So now we'll look for links of uploaded messages that are in the
 460          * post and set them to the same permissions as the post itself.
 461          */
 462
 463         $match = null;
 464
 465         if (!$preview && Photo::setPermissionFromBody($body, $profile_uid, $original_contact_id, $str_contact_allow, $str_group_allow, $str_contact_deny, $str_group_deny)) {
 466                 $objecttype = Activity\ObjectType::IMAGE;
 467         }
 468
 469         /*
 470          * Next link in any attachment references we find in the post.
 471          */
 472         $match = false;
 473
 474         /// @todo these lines should be moved to Model/Attach (Once it exists)
 475         if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
 476                 $attaches = $match[1];
 477                 if (count($attaches)) {
 478                         foreach ($attaches as $attach) {
 479                                 // Ensure to only modify attachments that you own
 480                                 $srch = '<' . intval($original_contact_id) . '>';
 481
 482                                 $condition = ['allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
 483                                                 'id' => $attach];
 484                                 if (!Attach::exists($condition)) {
 485                                         continue;
 486                                 }
 487
 488                                 $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
 489                                                 'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
 490                                 $condition = ['id' => $attach];
 491                                 Attach::update($fields, $condition);
 492                         }
 493                 }
 494         }
 495
 496         // embedded bookmark or attachment in post? set bookmark flag
 497
 498         $data = BBCode::getAttachmentData($body);
 499         if ((preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data["type"]))
 500                 && ($posttype != Item::PT_PERSONAL_NOTE)) {
 501                 $posttype = Item::PT_PAGE;
 502                 $objecttype =  Activity\ObjectType::BOOKMARK;
 503         }
 504
 505         $body = DI::bbCodeVideo()->transform($body);
 506
 507         // Fold multi-line [code] sequences
 508         $body = preg_replace('/\[\/code\]\s*\[code\]/ism', "\n", $body);
 509
 510         $body = BBCode::scaleExternalImages($body);
 511
 512         // Setting the object type if not defined before
 513         if (!$objecttype) {
 514                 $objecttype = Activity\ObjectType::NOTE; // Default value
 515                 $objectdata = BBCode::getAttachedData($body);
 516
 517                 if ($objectdata["type"] == "link") {
 518                         $objecttype = Activity\ObjectType::BOOKMARK;
 519                 } elseif ($objectdata["type"] == "video") {
 520                         $objecttype = Activity\ObjectType::VIDEO;
 521                 } elseif ($objectdata["type"] == "photo") {
 522                         $objecttype = Activity\ObjectType::IMAGE;
 523                 }
 524
 525         }
 526
 527         $attachments = '';
 528         $match = false;
 529
 530         if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
 531                 foreach ($match[2] as $mtch) {
 532                         $fields = ['id', 'filename', 'filesize', 'filetype'];
 533                         $attachment = Attach::selectFirst($fields, ['id' => $mtch]);
 534                         if ($attachment !== false) {
 535                                 if (strlen($attachments)) {
 536                                         $attachments .= ',';
 537                                 }
 538                                 $attachments .= '[attach]href="' . DI::baseUrl() . '/attach/' . $attachment['id'] .
 539                                                 '" length="' . $attachment['filesize'] . '" type="' . $attachment['filetype'] .
 540                                                 '" title="' . ($attachment['filename'] ? $attachment['filename'] : '') . '"[/attach]';
 541                         }
 542                         $body = str_replace($match[1],'',$body);
 543                 }
 544         }
 545
 546         if (!strlen($verb)) {
 547                 $verb = Activity::POST;
 548         }
 549
 550         if ($network == "") {
 551                 $network = Protocol::DFRN;
 552         }
 553
 554         $gravity = ($toplevel_item_id ? GRAVITY_COMMENT : GRAVITY_PARENT);
 555
 556         // even if the post arrived via API we are considering that it
 557         // originated on this site by default for determining relayability.
 558
 559         // Don't use "defaults" here. It would turn 0 to 1
 560         if (!isset($_REQUEST['origin'])) {
 561                 $origin = 1;
 562         } else {
 563                 $origin = $_REQUEST['origin'];
 564         }
 565
 566         $uri = ($message_id ? $message_id : Item::newURI($api_source ? $profile_uid : $uid, $guid));
 567
 568         // Fallback so that we alway have a parent uri
 569         if (!$thr_parent_uri || !$toplevel_item_id) {
 570                 $thr_parent_uri = $uri;
 571         }
 572
 573         $datarray = [];
 574         $datarray['uid']           = $profile_uid;
 575         $datarray['wall']          = $wall;
 576         $datarray['gravity']       = $gravity;
 577         $datarray['network']       = $network;
 578         $datarray['contact-id']    = $contact_id;
 579         $datarray['owner-name']    = $contact_record['name'];
 580         $datarray['owner-link']    = $contact_record['url'];
 581         $datarray['owner-avatar']  = $contact_record['thumb'];
 582         $datarray['owner-id']      = Contact::getIdForURL($datarray['owner-link']);
 583         $datarray['author-name']   = $author['name'];
 584         $datarray['author-link']   = $author['url'];
 585         $datarray['author-avatar'] = $author['thumb'];
 586         $datarray['author-id']     = Contact::getIdForURL($datarray['author-link']);
 587         $datarray['created']       = DateTimeFormat::utcNow();
 588         $datarray['edited']        = DateTimeFormat::utcNow();
 589         $datarray['commented']     = DateTimeFormat::utcNow();
 590         $datarray['received']      = DateTimeFormat::utcNow();
 591         $datarray['changed']       = DateTimeFormat::utcNow();
 592         $datarray['extid']         = $extid;
 593         $datarray['guid']          = $guid;
 594         $datarray['uri']           = $uri;
 595         $datarray['title']         = $title;
 596         $datarray['body']          = $body;
 597         $datarray['app']           = $app;
 598         $datarray['location']      = $location;
 599         $datarray['coord']         = $coord;
 600         $datarray['tag']           = $str_tags;
 601         $datarray['file']          = $categories;
 602         $datarray['inform']        = $inform;
 603         $datarray['verb']          = $verb;
 604         $datarray['post-type']     = $posttype;
 605         $datarray['object-type']   = $objecttype;
 606         $datarray['allow_cid']     = $str_contact_allow;
 607         $datarray['allow_gid']     = $str_group_allow;
 608         $datarray['deny_cid']      = $str_contact_deny;
 609         $datarray['deny_gid']      = $str_group_deny;
 610         $datarray['private']       = $private;
 611         $datarray['pubmail']       = $pubmail_enabled;
 612         $datarray['attach']        = $attachments;
 613
 614         // This is not a bug. The item store function changes 'parent-uri' to 'thr-parent' and fetches 'parent-uri' new. (We should change this)
 615         $datarray['parent-uri']    = $thr_parent_uri;
 616
 617         $datarray['postopts']      = $postopts;
 618         $datarray['origin']        = $origin;
 619         $datarray['moderated']     = false;
 620         $datarray['object']        = $object;
 621
 622         /*
 623          * These fields are for the convenience of addons...
 624          * 'self' if true indicates the owner is posting on their own wall
 625          * If parent is 0 it is a top-level post.
 626          */
 627         $datarray['parent']        = $toplevel_item_id;
 628         $datarray['self']          = $self;
 629
 630         // This triggers posts via API and the mirror functions
 631         $datarray['api_source'] = $api_source;
 632
 633         // This field is for storing the raw conversation data
 634         $datarray['protocol'] = Conversation::PARCEL_DFRN;
 635
 636         $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $datarray['parent-uri']]);
 637         if (DBA::isResult($conversation)) {
 638                 if ($conversation['conversation-uri'] != '') {
 639                         $datarray['conversation-uri'] = $conversation['conversation-uri'];
 640                 }
 641                 if ($conversation['conversation-href'] != '') {
 642                         $datarray['conversation-href'] = $conversation['conversation-href'];
 643                 }
 644         }
 645
 646         if ($orig_post) {
 647                 $datarray['edit'] = true;
 648         } else {
 649                 // If this was a share, add missing data here
 650                 $datarray = Item::addShareDataFromOriginal($datarray);
 651
 652                 $datarray['edit'] = false;
 653         }
 654
 655         // Check for hashtags in the body and repair or add hashtag links
 656         if ($preview || $orig_post) {
 657                 Item::setHashtags($datarray);
 658         }
 659
 660         // preview mode - prepare the body for display and send it via json
 661         if ($preview) {
 662                 // We set the datarray ID to -1 because in preview mode the dataray
 663                 // doesn't have an ID.
 664                 $datarray["id"] = -1;
 665                 $datarray["item_id"] = -1;
 666                 $datarray["author-network"] = Protocol::DFRN;
 667
 668                 $o = conversation($a, [array_merge($contact_record, $datarray)], new Pager(DI::args()->getQueryString()), 'search', false, true);
 669                 Logger::log('preview: ' . $o);
 670                 echo json_encode(['preview' => $o]);
 671                 exit();
 672         }
 673
 674         Hook::callAll('post_local',$datarray);
 675
 676         if (!empty($datarray['cancel'])) {
 677                 Logger::log('mod_item: post cancelled by addon.');
 678                 if ($return_path) {
 679                         DI::baseUrl()->redirect($return_path);
 680                 }
 681
 682                 $json = ['cancel' => 1];
 683                 if (!empty($_REQUEST['jsreload'])) {
 684                         $json['reload'] = DI::baseUrl() . '/' . $_REQUEST['jsreload'];
 685                 }
 686
 687                 echo json_encode($json);
 688                 exit();
 689         }
 690
 691         if ($orig_post) {
 692                 // Fill the cache field
 693                 // This could be done in Item::update as well - but we have to check for the existance of some fields.
 694                 Item::putInCache($datarray);
 695
 696                 $fields = [
 697                         'title' => $datarray['title'],
 698                         'body' => $datarray['body'],
 699                         'tag' => $datarray['tag'],
 700                         'attach' => $datarray['attach'],
 701                         'file' => $datarray['file'],
 702                         'rendered-html' => $datarray['rendered-html'],
 703                         'rendered-hash' => $datarray['rendered-hash'],
 704                         'edited' => DateTimeFormat::utcNow(),
 705                         'changed' => DateTimeFormat::utcNow()];
 706
 707                 Item::update($fields, ['id' => $post_id]);
 708
 709                 // update filetags in pconfig
 710                 FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
 711
 712                 if (!empty($_REQUEST['return']) && strlen($return_path)) {
 713                         Logger::log('return: ' . $return_path);
 714                         DI::baseUrl()->redirect($return_path);
 715                 }
 716                 exit();
 717         }
 718
 719         unset($datarray['edit']);
 720         unset($datarray['self']);
 721         unset($datarray['api_source']);
 722
 723         if ($origin) {
 724                 $signed = Diaspora::createCommentSignature($uid, $datarray);
 725                 if (!empty($signed)) {
 726                         $datarray['diaspora_signed_text'] = json_encode($signed);
 727                 }
 728         }
 729
 730         $post_id = Item::insert($datarray);
 731
 732         if (!$post_id) {
 733                 Logger::log("Item wasn't stored.");
 734                 DI::baseUrl()->redirect($return_path);
 735         }
 736
 737         $datarray = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 738
 739         if (!DBA::isResult($datarray)) {
 740                 Logger::log("Item with id ".$post_id." couldn't be fetched.");
 741                 DI::baseUrl()->redirect($return_path);
 742         }
 743
 744         // update filetags in pconfig
 745         FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
 746
 747         // These notifications are sent if someone else is commenting other your wall
 748         if ($toplevel_item_id) {
 749                 if ($contact_record != $author) {
 750                         notification([
 751                                 'type'         => NOTIFY_COMMENT,
 752                                 'notify_flags' => $user['notify-flags'],
 753                                 'language'     => $user['language'],
 754                                 'to_name'      => $user['username'],
 755                                 'to_email'     => $user['email'],
 756                                 'uid'          => $user['uid'],
 757                                 'item'         => $datarray,
 758                                 'link'         => DI::baseUrl().'/display/'.urlencode($datarray['guid']),
 759                                 'source_name'  => $datarray['author-name'],
 760                                 'source_link'  => $datarray['author-link'],
 761                                 'source_photo' => $datarray['author-avatar'],
 762                                 'verb'         => Activity::POST,
 763                                 'otype'        => 'item',
 764                                 'parent'       => $toplevel_item_id,
 765                                 'parent_uri'   => $toplevel_item['uri']
 766                         ]);
 767                 }
 768         } else {
 769                 if (($contact_record != $author) && !count($forum_contact)) {
 770                         notification([
 771                                 'type'         => NOTIFY_WALL,
 772                                 'notify_flags' => $user['notify-flags'],
 773                                 'language'     => $user['language'],
 774                                 'to_name'      => $user['username'],
 775                                 'to_email'     => $user['email'],
 776                                 'uid'          => $user['uid'],
 777                                 'item'         => $datarray,
 778                                 'link'         => DI::baseUrl().'/display/'.urlencode($datarray['guid']),
 779                                 'source_name'  => $datarray['author-name'],
 780                                 'source_link'  => $datarray['author-link'],
 781                                 'source_photo' => $datarray['author-avatar'],
 782                                 'verb'         => Activity::POST,
 783                                 'otype'        => 'item'
 784                         ]);
 785                 }
 786         }
 787
 788         Hook::callAll('post_local_end', $datarray);
 789
 790         if (strlen($emailcc) && $profile_uid == local_user()) {
 791                 $erecips = explode(',', $emailcc);
 792                 if (count($erecips)) {
 793                         foreach ($erecips as $recip) {
 794                                 $addr = trim($recip);
 795                                 if (!strlen($addr)) {
 796                                         continue;
 797                                 }
 798                                 $disclaimer = '<hr />' . DI::l10n()->t('This message was sent to you by %s, a member of the Friendica social network.', $a->user['username'])
 799                                         . '<br />';
 800                                 $disclaimer .= DI::l10n()->t('You may visit them online at %s', DI::baseUrl() . '/profile/' . $a->user['nickname']) . EOL;
 801                                 $disclaimer .= DI::l10n()->t('Please contact the sender by replying to this post if you do not wish to receive these messages.') . EOL;
 802                                 if (!$datarray['title']=='') {
 803                                         $subject = Email::encodeHeader($datarray['title'], 'UTF-8');
 804                                 } else {
 805                                         $subject = Email::encodeHeader('[Friendica]' . ' ' . DI::l10n()->t('%s posted an update.', $a->user['username']), 'UTF-8');
 806                                 }
 807                                 $link = '<a href="' . DI::baseUrl() . '/profile/' . $a->user['nickname'] . '"><img src="' . $author['thumb'] . '" alt="' . $a->user['username'] . '" /></a><br /><br />';
 808                                 $html    = Item::prepareBody($datarray);
 809                                 $message = '<html><body>' . $link . $html . $disclaimer . '</body></html>';
 810                                 $params =  [
 811                                         'fromName' => $a->user['username'],
 812                                         'fromEmail' => $a->user['email'],
 813                                         'toEmail' => $addr,
 814                                         'replyTo' => $a->user['email'],
 815                                         'messageSubject' => $subject,
 816                                         'htmlVersion' => $message,
 817                                         'textVersion' => HTML::toPlaintext($html.$disclaimer)
 818                                 ];
 819                                 Emailer::send($params);
 820                         }
 821                 }
 822         }
 823
 824         // Insert an item entry for UID=0 for global entries.
 825         // We now do it in the background to save some time.
 826         // This is important in interactive environments like the frontend or the API.
 827         // We don't fork a new process since this is done anyway with the following command
 828         Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], "CreateShadowEntry", $post_id);
 829
 830         // When we are doing some forum posting via ! we have to start the notifier manually.
 831         // These kind of posts don't initiate the notifier call in the item class.
 832         if ($only_to_forum) {
 833                 Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => false], "Notifier", Delivery::POST, $post_id);
 834         }
 835
 836         Logger::log('post_complete');
 837
 838         if ($api_source) {
 839                 return $post_id;
 840         }
 841
 842         item_post_return(DI::baseUrl(), $api_source, $return_path);
 843         // NOTREACHED
 844 }
 845
 846 function item_post_return($baseurl, $api_source, $return_path)
 847 {
 848         // figure out how to return, depending on from whence we came
 849     $a = DI::app();
 850
 851         if ($api_source) {
 852                 return;
 853         }
 854
 855         if ($return_path) {
 856                 DI::baseUrl()->redirect($return_path);
 857         }
 858
 859         $json = ['success' => 1];
 860         if (!empty($_REQUEST['jsreload'])) {
 861                 $json['reload'] = $baseurl . '/' . $_REQUEST['jsreload'];
 862         }
 863
 864         Logger::log('post_json: ' . print_r($json, true), Logger::DEBUG);
 865
 866         echo json_encode($json);
 867         exit();
 868 }
 869
 870 function item_content(App $a)
 871 {
 872         if (!Session::isAuthenticated()) {
 873                 return;
 874         }
 875
 876         $o = '';
 877
 878         if (($a->argc >= 3) && ($a->argv[1] === 'drop') && intval($a->argv[2])) {
 879                 if (DI::mode()->isAjax()) {
 880                         $o = Item::deleteForUser(['id' => $a->argv[2]], local_user());
 881                 } else {
 882                         if (!empty($a->argv[3])) {
 883                                 $o = drop_item($a->argv[2], $a->argv[3]);
 884                         }
 885                         else {
 886                                 $o = drop_item($a->argv[2]);
 887                         }
 888                 }
 889
 890                 if (DI::mode()->isAjax()) {
 891                         // ajax return: [<item id>, 0 (no perm) | <owner id>]
 892                         echo json_encode([intval($a->argv[2]), intval($o)]);
 893                         exit();
 894                 }
 895         }
 896
 897         return $o;
 898 }
 899
 900 /**
 901  * This function removes the tag $tag from the text $body and replaces it with
 902  * the appropriate link.
 903  *
 904  * @param App     $a
 905  * @param string  $body     the text to replace the tag in
 906  * @param string  $inform   a comma-seperated string containing everybody to inform
 907  * @param string  $str_tags string to add the tag to
 908  * @param integer $profile_uid
 909  * @param string  $tag      the tag to replace
 910  * @param string  $network  The network of the post
 911  *
 912  * @return array|bool ['replaced' => $replaced, 'contact' => $contact];
 913  * @throws ImagickException
 914  * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 915  */
 916 function handle_tag(&$body, &$inform, &$str_tags, $profile_uid, $tag, $network = "")
 917 {
 918         $replaced = false;
 919         $r = null;
 920
 921         //is it a person tag?
 922         if (Term::isType($tag, Term::MENTION, Term::IMPLICIT_MENTION, Term::EXCLUSIVE_MENTION)) {
 923                 $tag_type = substr($tag, 0, 1);
 924                 //is it already replaced?
 925                 if (strpos($tag, '[url=')) {
 926                         //append tag to str_tags
 927                         if (!stristr($str_tags, $tag)) {
 928                                 if (strlen($str_tags)) {
 929                                         $str_tags .= ',';
 930                                 }
 931                                 $str_tags .= $tag;
 932                         }
 933
 934                         // Checking for the alias that is used for OStatus
 935                         $pattern = "/[@!]\[url\=(.*?)\](.*?)\[\/url\]/ism";
 936                         if (preg_match($pattern, $tag, $matches)) {
 937                                 $data = Contact::getDetailsByURL($matches[1]);
 938
 939                                 if ($data["alias"] != "") {
 940                                         $newtag = '@[url=' . $data["alias"] . ']' . $data["nick"] . '[/url]';
 941
 942                                         if (!stripos($str_tags, '[url=' . $data["alias"] . ']')) {
 943                                                 if (strlen($str_tags)) {
 944                                                         $str_tags .= ',';
 945                                                 }
 946
 947                                                 $str_tags .= $newtag;
 948                                         }
 949                                 }
 950                         }
 951
 952                         return $replaced;
 953                 }
 954
 955                 //get the person's name
 956                 $name = substr($tag, 1);
 957
 958                 // Sometimes the tag detection doesn't seem to work right
 959                 // This is some workaround
 960                 $nameparts = explode(" ", $name);
 961                 $name = $nameparts[0];
 962
 963                 // Try to detect the contact in various ways
 964                 if (strpos($name, 'http://')) {
 965                         // At first we have to ensure that the contact exists
 966                         Contact::getIdForURL($name);
 967
 968                         // Now we should have something
 969                         $contact = Contact::getDetailsByURL($name);
 970                 } elseif (strpos($name, '@')) {
 971                         // This function automatically probes when no entry was found
 972                         $contact = Contact::getDetailsByAddr($name);
 973                 } else {
 974                         $contact = false;
 975                         $fields = ['id', 'url', 'nick', 'name', 'alias', 'network', 'forum', 'prv'];
 976
 977                         if (strrpos($name, '+')) {
 978                                 // Is it in format @nick+number?
 979                                 $tagcid = intval(substr($name, strrpos($name, '+') + 1));
 980                                 $contact = DBA::selectFirst('contact', $fields, ['id' => $tagcid, 'uid' => $profile_uid]);
 981                         }
 982
 983                         // select someone by nick or attag in the current network
 984                         if (!DBA::isResult($contact) && ($network != "")) {
 985                                 $condition = ["(`nick` = ? OR `attag` = ?) AND `network` = ? AND `uid` = ?",
 986                                                 $name, $name, $network, $profile_uid];
 987                                 $contact = DBA::selectFirst('contact', $fields, $condition);
 988                         }
 989
 990                         //select someone by name in the current network
 991                         if (!DBA::isResult($contact) && ($network != "")) {
 992                                 $condition = ['name' => $name, 'network' => $network, 'uid' => $profile_uid];
 993                                 $contact = DBA::selectFirst('contact', $fields, $condition);
 994                         }
 995
 996                         // select someone by nick or attag in any network
 997                         if (!DBA::isResult($contact)) {
 998                                 $condition = ["(`nick` = ? OR `attag` = ?) AND `uid` = ?", $name, $name, $profile_uid];
 999                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1000                         }
1001
1002                         // select someone by name in any network
1003                         if (!DBA::isResult($contact)) {
1004                                 $condition = ['name' => $name, 'uid' => $profile_uid];
1005                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1006                         }
1007                 }
1008
1009                 // Check if $contact has been successfully loaded
1010                 if (DBA::isResult($contact)) {
1011                         if (strlen($inform) && (isset($contact["notify"]) || isset($contact["id"]))) {
1012                                 $inform .= ',';
1013                         }
1014
1015                         if (isset($contact["id"])) {
1016                                 $inform .= 'cid:' . $contact["id"];
1017                         } elseif (isset($contact["notify"])) {
1018                                 $inform  .= $contact["notify"];
1019                         }
1020
1021                         $profile = $contact["url"];
1022                         $alias   = $contact["alias"];
1023                         $newname = ($contact["name"] ?? '') ?: $contact["nick"];
1024                 }
1025
1026                 //if there is an url for this persons profile
1027                 if (isset($profile) && ($newname != "")) {
1028                         $replaced = true;
1029                         // create profile link
1030                         $profile = str_replace(',', '%2c', $profile);
1031                         $newtag = $tag_type.'[url=' . $profile . ']' . $newname . '[/url]';
1032                         $body = str_replace($tag_type . $name, $newtag, $body);
1033                         // append tag to str_tags
1034                         if (!stristr($str_tags, $newtag)) {
1035                                 if (strlen($str_tags)) {
1036                                         $str_tags .= ',';
1037                                 }
1038                                 $str_tags .= $newtag;
1039                         }
1040
1041                         /*
1042                          * Status.Net seems to require the numeric ID URL in a mention if the person isn't
1043                          * subscribed to you. But the nickname URL is OK if they are. Grrr. We'll tag both.
1044                          */
1045                         if (!empty($alias)) {
1046                                 $newtag = '@[url=' . $alias . ']' . $newname . '[/url]';
1047                                 if (!stripos($str_tags, '[url=' . $alias . ']')) {
1048                                         if (strlen($str_tags)) {
1049                                                 $str_tags .= ',';
1050                                         }
1051                                         $str_tags .= $newtag;
1052                                 }
1053                         }
1054                 }
1055         }
1056
1057         return ['replaced' => $replaced, 'contact' => $contact];
1058 }
1059
1060 function item_add_implicit_mentions(array $tags, array $thread_parent_contact, $thread_parent_id)
1061 {
1062         if (DI::config()->get('system', 'disable_implicit_mentions')) {
1063                 // Add a tag if the parent contact is from ActivityPub or OStatus (This will notify them)
1064                 if (in_array($thread_parent_contact['network'], [Protocol::OSTATUS, Protocol::ACTIVITYPUB])) {
1065                         $contact = Term::TAG_CHARACTER[Term::MENTION] . '[url=' . $thread_parent_contact['url'] . ']' . $thread_parent_contact['nick'] . '[/url]';
1066                         if (!stripos(implode($tags), '[url=' . $thread_parent_contact['url'] . ']')) {
1067                                 $tags[] = $contact;
1068                         }
1069                 }
1070         } else {
1071                 $implicit_mentions = [
1072                         $thread_parent_contact['url'] => $thread_parent_contact['nick']
1073                 ];
1074
1075                 $parent_terms = Term::tagArrayFromItemId($thread_parent_id, [Term::MENTION, Term::IMPLICIT_MENTION]);
1076
1077                 foreach ($parent_terms as $parent_term) {
1078                         $implicit_mentions[$parent_term['url']] = $parent_term['term'];
1079                 }
1080
1081                 foreach ($implicit_mentions as $url => $label) {
1082                         if ($url != \Friendica\Model\Profile::getMyURL() && !stripos(implode($tags), '[url=' . $url . ']')) {
1083                                 $tags[] = Term::TAG_CHARACTER[Term::IMPLICIT_MENTION] . '[url=' . $url . ']' . $label . '[/url]';
1084                         }
1085                 }
1086         }
1087
1088         return $tags;
1089 }