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\Config;
  23 use Friendica\Core\Hook;
  24 use Friendica\Core\Logger;
  25 use Friendica\Core\Protocol;
  26 use Friendica\Core\Session;
  27 use Friendica\Core\System;
  28 use Friendica\Core\Worker;
  29 use Friendica\Database\DBA;
  30 use Friendica\DI;
  31 use Friendica\Model\Attach;
  32 use Friendica\Model\Contact;
  33 use Friendica\Model\Conversation;
  34 use Friendica\Model\FileTag;
  35 use Friendica\Model\Item;
  36 use Friendica\Model\Photo;
  37 use Friendica\Model\Term;
  38 use Friendica\Protocol\Activity;
  39 use Friendica\Protocol\Diaspora;
  40 use Friendica\Protocol\Email;
  41 use Friendica\Util\DateTimeFormat;
  42 use Friendica\Util\Emailer;
  43 use Friendica\Util\Security;
  44 use Friendica\Util\Strings;
  45 use Friendica\Worker\Delivery;
  46
  47 require_once __DIR__ . '/../include/items.php';
  48
  49 function item_post(App $a) {
  50         if (!Session::isAuthenticated()) {
  51                 return 0;
  52         }
  53
  54         $uid = local_user();
  55
  56         if (!empty($_REQUEST['dropitems'])) {
  57                 $arr_drop = explode(',', $_REQUEST['dropitems']);
  58                 drop_items($arr_drop);
  59                 $json = ['success' => 1];
  60                 echo json_encode($json);
  61                 exit();
  62         }
  63
  64         Hook::callAll('post_local_start', $_REQUEST);
  65
  66         Logger::log('postvars ' . print_r($_REQUEST, true), Logger::DATA);
  67
  68         $api_source = $_REQUEST['api_source'] ?? false;
  69
  70         $message_id = ((!empty($_REQUEST['message_id']) && $api_source) ? strip_tags($_REQUEST['message_id']) : '');
  71
  72         $return_path = $_REQUEST['return'] ?? '';
  73         $preview = intval($_REQUEST['preview'] ?? 0);
  74
  75         /*
  76          * Check for doubly-submitted posts, and reject duplicates
  77          * Note that we have to ignore previews, otherwise nothing will post
  78          * after it's been previewed
  79          */
  80         if (!$preview && !empty($_REQUEST['post_id_random'])) {
  81                 if (!empty($_SESSION['post-random']) && $_SESSION['post-random'] == $_REQUEST['post_id_random']) {
  82                         Logger::log("item post: duplicate post", Logger::DEBUG);
  83                         item_post_return(DI::baseUrl(), $api_source, $return_path);
  84                 } else {
  85                         $_SESSION['post-random'] = $_REQUEST['post_id_random'];
  86                 }
  87         }
  88
  89         // Is this a reply to something?
  90         $toplevel_item_id = intval($_REQUEST['parent'] ?? 0);
  91         $thr_parent_uri = trim($_REQUEST['parent_uri'] ?? '');
  92
  93         $thread_parent_id = 0;
  94         $thread_parent_contact = null;
  95
  96         $toplevel_item = null;
  97         $parent_user = null;
  98
  99         $parent_contact = null;
 100
 101         $objecttype = null;
 102         $profile_uid = ($_REQUEST['profile_uid'] ?? 0) ?: local_user();
 103         $posttype = ($_REQUEST['post_type'] ?? '') ?: Item::PT_ARTICLE;
 104
 105         if ($toplevel_item_id || $thr_parent_uri) {
 106                 if ($toplevel_item_id) {
 107                         $toplevel_item = Item::selectFirst([], ['id' => $toplevel_item_id]);
 108                 } elseif ($thr_parent_uri) {
 109                         $toplevel_item = Item::selectFirst([], ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
 110                 }
 111
 112                 // if this isn't the top-level parent of the conversation, find it
 113                 if (DBA::isResult($toplevel_item)) {
 114                         // The URI and the contact is taken from the direct parent which needn't to be the top parent
 115                         $thread_parent_id = $toplevel_item['id'];
 116                         $thr_parent_uri = $toplevel_item['uri'];
 117                         $thread_parent_contact = Contact::getDetailsByURL($toplevel_item["author-link"]);
 118
 119                         if ($toplevel_item['id'] != $toplevel_item['parent']) {
 120                                 $toplevel_item = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $toplevel_item['parent']]);
 121                         }
 122                 }
 123
 124                 if (!DBA::isResult($toplevel_item)) {
 125                         notice(DI::l10n()->t('Unable to locate original post.') . EOL);
 126                         if (!empty($_REQUEST['return'])) {
 127                                 DI::baseUrl()->redirect($return_path);
 128                         }
 129                         exit();
 130                 }
 131
 132                 $toplevel_item_id = $toplevel_item['id'];
 133                 $parent_user = $toplevel_item['uid'];
 134
 135                 $objecttype = Activity\ObjectType::COMMENT;
 136         }
 137
 138         if ($toplevel_item_id) {
 139                 Logger::info('mod_item: item_post parent=' . $toplevel_item_id);
 140         }
 141
 142         $post_id     = intval($_REQUEST['post_id'] ?? 0);
 143         $app         = strip_tags($_REQUEST['source'] ?? '');
 144         $extid       = strip_tags($_REQUEST['extid'] ?? '');
 145         $object      = $_REQUEST['object'] ?? '';
 146
 147         // Don't use "defaults" here. It would turn 0 to 1
 148         if (!isset($_REQUEST['wall'])) {
 149                 $wall = 1;
 150         } else {
 151                 $wall = $_REQUEST['wall'];
 152         }
 153
 154         // Ensure that the user id in a thread always stay the same
 155         if (!is_null($parent_user) && in_array($parent_user, [local_user(), 0])) {
 156                 $profile_uid = $parent_user;
 157         }
 158
 159         // Check for multiple posts with the same message id (when the post was created via API)
 160         if (($message_id != '') && ($profile_uid != 0)) {
 161                 if (Item::exists(['uri' => $message_id, 'uid' => $profile_uid])) {
 162                         Logger::log("Message with URI ".$message_id." already exists for user ".$profile_uid, Logger::DEBUG);
 163                         return 0;
 164                 }
 165         }
 166
 167         // Allow commenting if it is an answer to a public post
 168         $allow_comment = local_user() && ($profile_uid == 0) && $toplevel_item_id && in_array($toplevel_item['network'], Protocol::FEDERATED);
 169
 170         // Now check that valid personal details have been provided
 171         if (!Security::canWriteToUserWall($profile_uid) && !$allow_comment) {
 172                 notice(DI::l10n()->t('Permission denied.') . EOL);
 173
 174                 if (!empty($_REQUEST['return'])) {
 175                         DI::baseUrl()->redirect($return_path);
 176                 }
 177
 178                 exit();
 179         }
 180
 181         // Init post instance
 182         $orig_post = null;
 183
 184         // is this an edited post?
 185         if ($post_id > 0) {
 186                 $orig_post = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 187         }
 188
 189         $user = DBA::selectFirst('user', [], ['uid' => $profile_uid]);
 190
 191         if (!DBA::isResult($user) && !$toplevel_item_id) {
 192                 return 0;
 193         }
 194
 195         $categories = '';
 196         $postopts = '';
 197         $emailcc = '';
 198         $body = $_REQUEST['body'] ?? '';
 199         $has_attachment = $_REQUEST['has_attachment'] ?? 0;
 200
 201         // If we have a speparate attachment, we need to add it to the body.
 202         if (!empty($has_attachment)) {
 203                 $attachment_type  = $_REQUEST['attachment_type'] ??  '';
 204                 $attachment_title = $_REQUEST['attachment_title'] ?? '';
 205                 $attachment_text  = $_REQUEST['attachment_text'] ??  '';
 206
 207                 $attachment_url     = hex2bin($_REQUEST['attachment_url'] ??     '');
 208                 $attachment_img_src = hex2bin($_REQUEST['attachment_img_src'] ?? '');
 209
 210                 $attachment_img_width  = $_REQUEST['attachment_img_width'] ??  0;
 211                 $attachment_img_height = $_REQUEST['attachment_img_height'] ?? 0;
 212                 $attachment = [
 213                         'type'   => $attachment_type,
 214                         'title'  => $attachment_title,
 215                         'text'   => $attachment_text,
 216                         'url'    => $attachment_url,
 217                 ];
 218
 219                 if (!empty($attachment_img_src)) {
 220                         $attachment['images'] = [
 221                                 0 => [
 222                                         'src'    => $attachment_img_src,
 223                                         'width'  => $attachment_img_width,
 224                                         'height' => $attachment_img_height
 225                                 ]
 226                         ];
 227                 }
 228
 229                 $att_bbcode = add_page_info_data($attachment);
 230                 $body .= $att_bbcode;
 231         }
 232
 233         // Convert links with empty descriptions to links without an explicit description
 234         $body = preg_replace('#\[url=([^\]]*?)\]\[/url\]#ism', '[url]$1[/url]', $body);
 235
 236         if (!empty($orig_post)) {
 237                 $str_group_allow   = $orig_post['allow_gid'];
 238                 $str_contact_allow = $orig_post['allow_cid'];
 239                 $str_group_deny    = $orig_post['deny_gid'];
 240                 $str_contact_deny  = $orig_post['deny_cid'];
 241                 $location          = $orig_post['location'];
 242                 $coord             = $orig_post['coord'];
 243                 $verb              = $orig_post['verb'];
 244                 $objecttype        = $orig_post['object-type'];
 245                 $app               = $orig_post['app'];
 246                 $categories        = $orig_post['file'];
 247                 $title             = Strings::escapeTags(trim($_REQUEST['title']));
 248                 $body              = trim($body);
 249                 $private           = $orig_post['private'];
 250                 $pubmail_enabled   = $orig_post['pubmail'];
 251                 $network           = $orig_post['network'];
 252                 $guid              = $orig_post['guid'];
 253                 $extid             = $orig_post['extid'];
 254
 255         } else {
 256
 257                 /*
 258                  * if coming from the API and no privacy settings are set,
 259                  * use the user default permissions - as they won't have
 260                  * been supplied via a form.
 261                  */
 262                 if ($api_source
 263                         && !array_key_exists('contact_allow', $_REQUEST)
 264                         && !array_key_exists('group_allow', $_REQUEST)
 265                         && !array_key_exists('contact_deny', $_REQUEST)
 266                         && !array_key_exists('group_deny', $_REQUEST)) {
 267                         $str_group_allow   = $user['allow_gid'];
 268                         $str_contact_allow = $user['allow_cid'];
 269                         $str_group_deny    = $user['deny_gid'];
 270                         $str_contact_deny  = $user['deny_cid'];
 271                 } else {
 272                         // use the posted permissions
 273
 274                         $aclFormatter = DI::aclFormatter();
 275
 276                         $str_group_allow   = $aclFormatter->toString($_REQUEST['group_allow'] ?? '');
 277                         $str_contact_allow = $aclFormatter->toString($_REQUEST['contact_allow'] ?? '');
 278                         $str_group_deny    = $aclFormatter->toString($_REQUEST['group_deny'] ?? '');
 279                         $str_contact_deny  = $aclFormatter->toString($_REQUEST['contact_deny'] ?? '');
 280                 }
 281
 282                 $title             = Strings::escapeTags(trim($_REQUEST['title']    ?? ''));
 283                 $location          = Strings::escapeTags(trim($_REQUEST['location'] ?? ''));
 284                 $coord             = Strings::escapeTags(trim($_REQUEST['coord']    ?? ''));
 285                 $verb              = Strings::escapeTags(trim($_REQUEST['verb']     ?? ''));
 286                 $emailcc           = Strings::escapeTags(trim($_REQUEST['emailcc']  ?? ''));
 287                 $body              = trim($body);
 288                 $network           = Strings::escapeTags(trim(($_REQUEST['network']  ?? '') ?: Protocol::DFRN));
 289                 $guid              = System::createUUID();
 290
 291                 $postopts = $_REQUEST['postopts'] ?? '';
 292
 293                 $private = ((strlen($str_group_allow) || strlen($str_contact_allow) || strlen($str_group_deny) || strlen($str_contact_deny)) ? 1 : 0);
 294
 295                 // If this is a comment, set the permissions from the parent.
 296
 297                 if ($toplevel_item) {
 298                         // for non native networks use the network of the original post as network of the item
 299                         if (($toplevel_item['network'] != Protocol::DIASPORA)
 300                                 && ($toplevel_item['network'] != Protocol::OSTATUS)
 301                                 && ($network == "")) {
 302                                 $network = $toplevel_item['network'];
 303                         }
 304
 305                         $str_contact_allow = $toplevel_item['allow_cid'];
 306                         $str_group_allow   = $toplevel_item['allow_gid'];
 307                         $str_contact_deny  = $toplevel_item['deny_cid'];
 308                         $str_group_deny    = $toplevel_item['deny_gid'];
 309                         $private           = $toplevel_item['private'];
 310
 311                         $wall              = $toplevel_item['wall'];
 312                 }
 313
 314                 $pubmail_enabled = ($_REQUEST['pubmail_enable'] ?? false) && !$private;
 315
 316                 // if using the API, we won't see pubmail_enable - figure out if it should be set
 317                 if ($api_source && $profile_uid && $profile_uid == local_user() && !$private) {
 318                         if (function_exists('imap_open') && !DI::config()->get('system', 'imap_disabled')) {
 319                                 $pubmail_enabled = DBA::exists('mailacct', ["`uid` = ? AND `server` != ? AND `pubmail`", local_user(), '']);
 320                         }
 321                 }
 322
 323                 if (!strlen($body)) {
 324                         if ($preview) {
 325                                 exit();
 326                         }
 327                         info(DI::l10n()->t('Empty post discarded.') . EOL);
 328                         if (!empty($_REQUEST['return'])) {
 329                                 DI::baseUrl()->redirect($return_path);
 330                         }
 331                         exit();
 332                 }
 333         }
 334
 335         if (!empty($categories)) {
 336                 // get the "fileas" tags for this post
 337                 $filedas = FileTag::fileToArray($categories);
 338         }
 339
 340         // save old and new categories, so we can determine what needs to be deleted from pconfig
 341         $categories_old = $categories;
 342         $categories = FileTag::listToFile(trim($_REQUEST['category'] ?? ''), 'category');
 343         $categories_new = $categories;
 344
 345         if (!empty($filedas) && is_array($filedas)) {
 346                 // append the fileas stuff to the new categories list
 347                 $categories .= FileTag::arrayToFile($filedas);
 348         }
 349
 350         // get contact info for poster
 351
 352         $author = null;
 353         $self   = false;
 354         $contact_id = 0;
 355
 356         if (local_user() && ((local_user() == $profile_uid) || $allow_comment)) {
 357                 $self = true;
 358                 $author = DBA::selectFirst('contact', [], ['uid' => local_user(), 'self' => true]);
 359         } elseif (!empty(Session::getRemoteContactID($profile_uid))) {
 360                 $author = DBA::selectFirst('contact', [], ['id' => Session::getRemoteContactID($profile_uid)]);
 361         }
 362
 363         if (DBA::isResult($author)) {
 364                 $contact_id = $author['id'];
 365         }
 366
 367         // get contact info for owner
 368         if ($profile_uid == local_user() || $allow_comment) {
 369                 $contact_record = $author;
 370         } else {
 371                 $contact_record = DBA::selectFirst('contact', [], ['uid' => $profile_uid, 'self' => true]);
 372         }
 373
 374         // Look for any tags and linkify them
 375         $str_tags = '';
 376         $inform   = '';
 377
 378         $tags = BBCode::getTags($body);
 379
 380         if ($thread_parent_id && !\Friendica\Content\Feature::isEnabled($uid, 'explicit_mentions')) {
 381                 $tags = item_add_implicit_mentions($tags, $thread_parent_contact, $thread_parent_id);
 382         }
 383
 384         $tagged = [];
 385
 386         $private_forum = false;
 387         $only_to_forum = false;
 388         $forum_contact = [];
 389
 390         if (count($tags)) {
 391                 foreach ($tags as $tag) {
 392                         $tag_type = substr($tag, 0, 1);
 393
 394                         if ($tag_type == Term::TAG_CHARACTER[Term::HASHTAG]) {
 395                                 continue;
 396                         }
 397
 398                         /*
 399                          * If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
 400                          * Robert Johnson should be first in the $tags array
 401                          */
 402                         $fullnametagged = false;
 403                         /// @TODO $tagged is initialized above if () block and is not filled, maybe old-lost code?
 404                         foreach ($tagged as $nextTag) {
 405                                 if (stristr($nextTag, $tag . ' ')) {
 406                                         $fullnametagged = true;
 407                                         break;
 408                                 }
 409                         }
 410                         if ($fullnametagged) {
 411                                 continue;
 412                         }
 413
 414                         $success = handle_tag($body, $inform, $str_tags, local_user() ? local_user() : $profile_uid, $tag, $network);
 415                         if ($success['replaced']) {
 416                                 $tagged[] = $tag;
 417                         }
 418                         // When the forum is private or the forum is addressed with a "!" make the post private
 419                         if (is_array($success['contact']) && (!empty($success['contact']['prv']) || ($tag_type == Term::TAG_CHARACTER[Term::EXCLUSIVE_MENTION]))) {
 420                                 $private_forum = $success['contact']['prv'];
 421                                 $only_to_forum = ($tag_type == Term::TAG_CHARACTER[Term::EXCLUSIVE_MENTION]);
 422                                 $private_id = $success['contact']['id'];
 423                                 $forum_contact = $success['contact'];
 424                         } elseif (is_array($success['contact']) && !empty($success['contact']['forum']) &&
 425                                 ($str_contact_allow == '<' . $success['contact']['id'] . '>')) {
 426                                 $private_forum = false;
 427                                 $only_to_forum = true;
 428                                 $private_id = $success['contact']['id'];
 429                                 $forum_contact = $success['contact'];
 430                         }
 431                 }
 432         }
 433
 434         $original_contact_id = $contact_id;
 435
 436         if (!$toplevel_item_id && count($forum_contact) && ($private_forum || $only_to_forum)) {
 437                 // we tagged a forum in a top level post. Now we change the post
 438                 $private = $private_forum;
 439
 440                 $str_group_allow = '';
 441                 $str_contact_deny = '';
 442                 $str_group_deny = '';
 443                 if ($private_forum) {
 444                         $str_contact_allow = '<' . $private_id . '>';
 445                 } else {
 446                         $str_contact_allow = '';
 447                 }
 448                 $contact_id = $private_id;
 449                 $contact_record = $forum_contact;
 450                 $_REQUEST['origin'] = false;
 451                 $wall = 0;
 452         }
 453
 454         /*
 455          * When a photo was uploaded into the message using the (profile wall) ajax
 456          * uploader, The permissions are initially set to disallow anybody but the
 457          * owner from seeing it. This is because the permissions may not yet have been
 458          * set for the post. If it's private, the photo permissions should be set
 459          * appropriately. But we didn't know the final permissions on the post until
 460          * now. So now we'll look for links of uploaded messages that are in the
 461          * post and set them to the same permissions as the post itself.
 462          */
 463
 464         $match = null;
 465
 466         if (!$preview && Photo::setPermissionFromBody($body, $profile_uid, $original_contact_id, $str_contact_allow, $str_group_allow, $str_contact_deny, $str_group_deny)) {
 467                 $objecttype = Activity\ObjectType::IMAGE;
 468         }
 469
 470         /*
 471          * Next link in any attachment references we find in the post.
 472          */
 473         $match = false;
 474
 475         /// @todo these lines should be moved to Model/Attach (Once it exists)
 476         if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
 477                 $attaches = $match[1];
 478                 if (count($attaches)) {
 479                         foreach ($attaches as $attach) {
 480                                 // Ensure to only modify attachments that you own
 481                                 $srch = '<' . intval($original_contact_id) . '>';
 482
 483                                 $condition = ['allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
 484                                                 'id' => $attach];
 485                                 if (!Attach::exists($condition)) {
 486                                         continue;
 487                                 }
 488
 489                                 $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
 490                                                 'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
 491                                 $condition = ['id' => $attach];
 492                                 Attach::update($fields, $condition);
 493                         }
 494                 }
 495         }
 496
 497         // embedded bookmark or attachment in post? set bookmark flag
 498
 499         $data = BBCode::getAttachmentData($body);
 500         if ((preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data["type"]))
 501                 && ($posttype != Item::PT_PERSONAL_NOTE)) {
 502                 $posttype = Item::PT_PAGE;
 503                 $objecttype =  Activity\ObjectType::BOOKMARK;
 504         }
 505
 506         $body = DI::bbCodeVideo()->transform($body);
 507
 508         // Fold multi-line [code] sequences
 509         $body = preg_replace('/\[\/code\]\s*\[code\]/ism', "\n", $body);
 510
 511         $body = BBCode::scaleExternalImages($body);
 512
 513         // Setting the object type if not defined before
 514         if (!$objecttype) {
 515                 $objecttype = Activity\ObjectType::NOTE; // Default value
 516                 $objectdata = BBCode::getAttachedData($body);
 517
 518                 if ($objectdata["type"] == "link") {
 519                         $objecttype = Activity\ObjectType::BOOKMARK;
 520                 } elseif ($objectdata["type"] == "video") {
 521                         $objecttype = Activity\ObjectType::VIDEO;
 522                 } elseif ($objectdata["type"] == "photo") {
 523                         $objecttype = Activity\ObjectType::IMAGE;
 524                 }
 525
 526         }
 527
 528         $attachments = '';
 529         $match = false;
 530
 531         if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
 532                 foreach ($match[2] as $mtch) {
 533                         $fields = ['id', 'filename', 'filesize', 'filetype'];
 534                         $attachment = Attach::selectFirst($fields, ['id' => $mtch]);
 535                         if ($attachment !== false) {
 536                                 if (strlen($attachments)) {
 537                                         $attachments .= ',';
 538                                 }
 539                                 $attachments .= '[attach]href="' . DI::baseUrl() . '/attach/' . $attachment['id'] .
 540                                                 '" length="' . $attachment['filesize'] . '" type="' . $attachment['filetype'] .
 541                                                 '" title="' . ($attachment['filename'] ? $attachment['filename'] : '') . '"[/attach]';
 542                         }
 543                         $body = str_replace($match[1],'',$body);
 544                 }
 545         }
 546
 547         if (!strlen($verb)) {
 548                 $verb = Activity::POST;
 549         }
 550
 551         if ($network == "") {
 552                 $network = Protocol::DFRN;
 553         }
 554
 555         $gravity = ($toplevel_item_id ? GRAVITY_COMMENT : GRAVITY_PARENT);
 556
 557         // even if the post arrived via API we are considering that it
 558         // originated on this site by default for determining relayability.
 559
 560         // Don't use "defaults" here. It would turn 0 to 1
 561         if (!isset($_REQUEST['origin'])) {
 562                 $origin = 1;
 563         } else {
 564                 $origin = $_REQUEST['origin'];
 565         }
 566
 567         $uri = ($message_id ? $message_id : Item::newURI($api_source ? $profile_uid : $uid, $guid));
 568
 569         // Fallback so that we alway have a parent uri
 570         if (!$thr_parent_uri || !$toplevel_item_id) {
 571                 $thr_parent_uri = $uri;
 572         }
 573
 574         $datarray = [];
 575         $datarray['uid']           = $profile_uid;
 576         $datarray['wall']          = $wall;
 577         $datarray['gravity']       = $gravity;
 578         $datarray['network']       = $network;
 579         $datarray['contact-id']    = $contact_id;
 580         $datarray['owner-name']    = $contact_record['name'];
 581         $datarray['owner-link']    = $contact_record['url'];
 582         $datarray['owner-avatar']  = $contact_record['thumb'];
 583         $datarray['owner-id']      = Contact::getIdForURL($datarray['owner-link']);
 584         $datarray['author-name']   = $author['name'];
 585         $datarray['author-link']   = $author['url'];
 586         $datarray['author-avatar'] = $author['thumb'];
 587         $datarray['author-id']     = Contact::getIdForURL($datarray['author-link']);
 588         $datarray['created']       = DateTimeFormat::utcNow();
 589         $datarray['edited']        = DateTimeFormat::utcNow();
 590         $datarray['commented']     = DateTimeFormat::utcNow();
 591         $datarray['received']      = DateTimeFormat::utcNow();
 592         $datarray['changed']       = DateTimeFormat::utcNow();
 593         $datarray['extid']         = $extid;
 594         $datarray['guid']          = $guid;
 595         $datarray['uri']           = $uri;
 596         $datarray['title']         = $title;
 597         $datarray['body']          = $body;
 598         $datarray['app']           = $app;
 599         $datarray['location']      = $location;
 600         $datarray['coord']         = $coord;
 601         $datarray['tag']           = $str_tags;
 602         $datarray['file']          = $categories;
 603         $datarray['inform']        = $inform;
 604         $datarray['verb']          = $verb;
 605         $datarray['post-type']     = $posttype;
 606         $datarray['object-type']   = $objecttype;
 607         $datarray['allow_cid']     = $str_contact_allow;
 608         $datarray['allow_gid']     = $str_group_allow;
 609         $datarray['deny_cid']      = $str_contact_deny;
 610         $datarray['deny_gid']      = $str_group_deny;
 611         $datarray['private']       = $private;
 612         $datarray['pubmail']       = $pubmail_enabled;
 613         $datarray['attach']        = $attachments;
 614
 615         // This is not a bug. The item store function changes 'parent-uri' to 'thr-parent' and fetches 'parent-uri' new. (We should change this)
 616         $datarray['parent-uri']    = $thr_parent_uri;
 617
 618         $datarray['postopts']      = $postopts;
 619         $datarray['origin']        = $origin;
 620         $datarray['moderated']     = false;
 621         $datarray['object']        = $object;
 622
 623         /*
 624          * These fields are for the convenience of addons...
 625          * 'self' if true indicates the owner is posting on their own wall
 626          * If parent is 0 it is a top-level post.
 627          */
 628         $datarray['parent']        = $toplevel_item_id;
 629         $datarray['self']          = $self;
 630
 631         // This triggers posts via API and the mirror functions
 632         $datarray['api_source'] = $api_source;
 633
 634         // This field is for storing the raw conversation data
 635         $datarray['protocol'] = Conversation::PARCEL_DFRN;
 636
 637         $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $datarray['parent-uri']]);
 638         if (DBA::isResult($conversation)) {
 639                 if ($conversation['conversation-uri'] != '') {
 640                         $datarray['conversation-uri'] = $conversation['conversation-uri'];
 641                 }
 642                 if ($conversation['conversation-href'] != '') {
 643                         $datarray['conversation-href'] = $conversation['conversation-href'];
 644                 }
 645         }
 646
 647         if ($orig_post) {
 648                 $datarray['edit'] = true;
 649         } else {
 650                 // If this was a share, add missing data here
 651                 $datarray = Item::addShareDataFromOriginal($datarray);
 652
 653                 $datarray['edit'] = false;
 654         }
 655
 656         // Check for hashtags in the body and repair or add hashtag links
 657         if ($preview || $orig_post) {
 658                 Item::setHashtags($datarray);
 659         }
 660
 661         // preview mode - prepare the body for display and send it via json
 662         if ($preview) {
 663                 // We set the datarray ID to -1 because in preview mode the dataray
 664                 // doesn't have an ID.
 665                 $datarray["id"] = -1;
 666                 $datarray["item_id"] = -1;
 667                 $datarray["author-network"] = Protocol::DFRN;
 668
 669                 $o = conversation($a, [array_merge($contact_record, $datarray)], new Pager(DI::args()->getQueryString()), 'search', false, true);
 670                 Logger::log('preview: ' . $o);
 671                 echo json_encode(['preview' => $o]);
 672                 exit();
 673         }
 674
 675         Hook::callAll('post_local',$datarray);
 676
 677         if (!empty($datarray['cancel'])) {
 678                 Logger::log('mod_item: post cancelled by addon.');
 679                 if ($return_path) {
 680                         DI::baseUrl()->redirect($return_path);
 681                 }
 682
 683                 $json = ['cancel' => 1];
 684                 if (!empty($_REQUEST['jsreload'])) {
 685                         $json['reload'] = DI::baseUrl() . '/' . $_REQUEST['jsreload'];
 686                 }
 687
 688                 echo json_encode($json);
 689                 exit();
 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, $categories_new, 'category');
 712
 713                 if (!empty($_REQUEST['return']) && strlen($return_path)) {
 714                         Logger::log('return: ' . $return_path);
 715                         DI::baseUrl()->redirect($return_path);
 716                 }
 717                 exit();
 718         }
 719
 720         unset($datarray['edit']);
 721         unset($datarray['self']);
 722         unset($datarray['api_source']);
 723
 724         if ($origin) {
 725                 $signed = Diaspora::createCommentSignature($uid, $datarray);
 726                 if (!empty($signed)) {
 727                         $datarray['diaspora_signed_text'] = json_encode($signed);
 728                 }
 729         }
 730
 731         $post_id = Item::insert($datarray);
 732
 733         if (!$post_id) {
 734                 Logger::log("Item wasn't stored.");
 735                 DI::baseUrl()->redirect($return_path);
 736         }
 737
 738         $datarray = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 739
 740         if (!DBA::isResult($datarray)) {
 741                 Logger::log("Item with id ".$post_id." couldn't be fetched.");
 742                 DI::baseUrl()->redirect($return_path);
 743         }
 744
 745         // update filetags in pconfig
 746         FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
 747
 748         // These notifications are sent if someone else is commenting other your wall
 749         if ($toplevel_item_id) {
 750                 if ($contact_record != $author) {
 751                         notification([
 752                                 'type'         => NOTIFY_COMMENT,
 753                                 'notify_flags' => $user['notify-flags'],
 754                                 'language'     => $user['language'],
 755                                 'to_name'      => $user['username'],
 756                                 'to_email'     => $user['email'],
 757                                 'uid'          => $user['uid'],
 758                                 'item'         => $datarray,
 759                                 'link'         => DI::baseUrl().'/display/'.urlencode($datarray['guid']),
 760                                 'source_name'  => $datarray['author-name'],
 761                                 'source_link'  => $datarray['author-link'],
 762                                 'source_photo' => $datarray['author-avatar'],
 763                                 'verb'         => Activity::POST,
 764                                 'otype'        => 'item',
 765                                 'parent'       => $toplevel_item_id,
 766                                 'parent_uri'   => $toplevel_item['uri']
 767                         ]);
 768                 }
 769         } else {
 770                 if (($contact_record != $author) && !count($forum_contact)) {
 771                         notification([
 772                                 'type'         => NOTIFY_WALL,
 773                                 'notify_flags' => $user['notify-flags'],
 774                                 'language'     => $user['language'],
 775                                 'to_name'      => $user['username'],
 776                                 'to_email'     => $user['email'],
 777                                 'uid'          => $user['uid'],
 778                                 'item'         => $datarray,
 779                                 'link'         => DI::baseUrl().'/display/'.urlencode($datarray['guid']),
 780                                 'source_name'  => $datarray['author-name'],
 781                                 'source_link'  => $datarray['author-link'],
 782                                 'source_photo' => $datarray['author-avatar'],
 783                                 'verb'         => Activity::POST,
 784                                 'otype'        => 'item'
 785                         ]);
 786                 }
 787         }
 788
 789         Hook::callAll('post_local_end', $datarray);
 790
 791         if (strlen($emailcc) && $profile_uid == local_user()) {
 792                 $erecips = explode(',', $emailcc);
 793                 if (count($erecips)) {
 794                         foreach ($erecips as $recip) {
 795                                 $addr = trim($recip);
 796                                 if (!strlen($addr)) {
 797                                         continue;
 798                                 }
 799                                 $disclaimer = '<hr />' . DI::l10n()->t('This message was sent to you by %s, a member of the Friendica social network.', $a->user['username'])
 800                                         . '<br />';
 801                                 $disclaimer .= DI::l10n()->t('You may visit them online at %s', DI::baseUrl() . '/profile/' . $a->user['nickname']) . EOL;
 802                                 $disclaimer .= DI::l10n()->t('Please contact the sender by replying to this post if you do not wish to receive these messages.') . EOL;
 803                                 if (!$datarray['title']=='') {
 804                                         $subject = Email::encodeHeader($datarray['title'], 'UTF-8');
 805                                 } else {
 806                                         $subject = Email::encodeHeader('[Friendica]' . ' ' . DI::l10n()->t('%s posted an update.', $a->user['username']), 'UTF-8');
 807                                 }
 808                                 $link = '<a href="' . DI::baseUrl() . '/profile/' . $a->user['nickname'] . '"><img src="' . $author['thumb'] . '" alt="' . $a->user['username'] . '" /></a><br /><br />';
 809                                 $html    = Item::prepareBody($datarray);
 810                                 $message = '<html><body>' . $link . $html . $disclaimer . '</body></html>';
 811                                 $params =  [
 812                                         'fromName' => $a->user['username'],
 813                                         'fromEmail' => $a->user['email'],
 814                                         'toEmail' => $addr,
 815                                         'replyTo' => $a->user['email'],
 816                                         'messageSubject' => $subject,
 817                                         'htmlVersion' => $message,
 818                                         'textVersion' => HTML::toPlaintext($html.$disclaimer)
 819                                 ];
 820                                 Emailer::send($params);
 821                         }
 822                 }
 823         }
 824
 825         // Insert an item entry for UID=0 for global entries.
 826         // We now do it in the background to save some time.
 827         // This is important in interactive environments like the frontend or the API.
 828         // We don't fork a new process since this is done anyway with the following command
 829         Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], "CreateShadowEntry", $post_id);
 830
 831         // When we are doing some forum posting via ! we have to start the notifier manually.
 832         // These kind of posts don't initiate the notifier call in the item class.
 833         if ($only_to_forum) {
 834                 Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => false], "Notifier", Delivery::POST, $post_id);
 835         }
 836
 837         Logger::log('post_complete');
 838
 839         if ($api_source) {
 840                 return $post_id;
 841         }
 842
 843         item_post_return(DI::baseUrl(), $api_source, $return_path);
 844         // NOTREACHED
 845 }
 846
 847 function item_post_return($baseurl, $api_source, $return_path)
 848 {
 849         // figure out how to return, depending on from whence we came
 850     $a = DI::app();
 851
 852         if ($api_source) {
 853                 return;
 854         }
 855
 856         if ($return_path) {
 857                 DI::baseUrl()->redirect($return_path);
 858         }
 859
 860         $json = ['success' => 1];
 861         if (!empty($_REQUEST['jsreload'])) {
 862                 $json['reload'] = $baseurl . '/' . $_REQUEST['jsreload'];
 863         }
 864
 865         Logger::log('post_json: ' . print_r($json, true), Logger::DEBUG);
 866
 867         echo json_encode($json);
 868         exit();
 869 }
 870
 871 function item_content(App $a)
 872 {
 873         if (!Session::isAuthenticated()) {
 874                 return;
 875         }
 876
 877         $o = '';
 878
 879         if (($a->argc >= 3) && ($a->argv[1] === 'drop') && intval($a->argv[2])) {
 880                 if (DI::mode()->isAjax()) {
 881                         $o = Item::deleteForUser(['id' => $a->argv[2]], local_user());
 882                 } else {
 883                         if (!empty($a->argv[3])) {
 884                                 $o = drop_item($a->argv[2], $a->argv[3]);
 885                         }
 886                         else {
 887                                 $o = drop_item($a->argv[2]);
 888                         }
 889                 }
 890
 891                 if (DI::mode()->isAjax()) {
 892                         // ajax return: [<item id>, 0 (no perm) | <owner id>]
 893                         echo json_encode([intval($a->argv[2]), intval($o)]);
 894                         exit();
 895                 }
 896         }
 897
 898         return $o;
 899 }
 900
 901 /**
 902  * This function removes the tag $tag from the text $body and replaces it with
 903  * the appropriate link.
 904  *
 905  * @param App     $a
 906  * @param string  $body     the text to replace the tag in
 907  * @param string  $inform   a comma-seperated string containing everybody to inform
 908  * @param string  $str_tags string to add the tag to
 909  * @param integer $profile_uid
 910  * @param string  $tag      the tag to replace
 911  * @param string  $network  The network of the post
 912  *
 913  * @return array|bool ['replaced' => $replaced, 'contact' => $contact];
 914  * @throws ImagickException
 915  * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 916  */
 917 function handle_tag(&$body, &$inform, &$str_tags, $profile_uid, $tag, $network = "")
 918 {
 919         $replaced = false;
 920         $r = null;
 921
 922         //is it a person tag?
 923         if (Term::isType($tag, Term::MENTION, Term::IMPLICIT_MENTION, Term::EXCLUSIVE_MENTION)) {
 924                 $tag_type = substr($tag, 0, 1);
 925                 //is it already replaced?
 926                 if (strpos($tag, '[url=')) {
 927                         //append tag to str_tags
 928                         if (!stristr($str_tags, $tag)) {
 929                                 if (strlen($str_tags)) {
 930                                         $str_tags .= ',';
 931                                 }
 932                                 $str_tags .= $tag;
 933                         }
 934
 935                         // Checking for the alias that is used for OStatus
 936                         $pattern = "/[@!]\[url\=(.*?)\](.*?)\[\/url\]/ism";
 937                         if (preg_match($pattern, $tag, $matches)) {
 938                                 $data = Contact::getDetailsByURL($matches[1]);
 939
 940                                 if ($data["alias"] != "") {
 941                                         $newtag = '@[url=' . $data["alias"] . ']' . $data["nick"] . '[/url]';
 942
 943                                         if (!stripos($str_tags, '[url=' . $data["alias"] . ']')) {
 944                                                 if (strlen($str_tags)) {
 945                                                         $str_tags .= ',';
 946                                                 }
 947
 948                                                 $str_tags .= $newtag;
 949                                         }
 950                                 }
 951                         }
 952
 953                         return $replaced;
 954                 }
 955
 956                 //get the person's name
 957                 $name = substr($tag, 1);
 958
 959                 // Sometimes the tag detection doesn't seem to work right
 960                 // This is some workaround
 961                 $nameparts = explode(" ", $name);
 962                 $name = $nameparts[0];
 963
 964                 // Try to detect the contact in various ways
 965                 if (strpos($name, 'http://')) {
 966                         // At first we have to ensure that the contact exists
 967                         Contact::getIdForURL($name);
 968
 969                         // Now we should have something
 970                         $contact = Contact::getDetailsByURL($name);
 971                 } elseif (strpos($name, '@')) {
 972                         // This function automatically probes when no entry was found
 973                         $contact = Contact::getDetailsByAddr($name);
 974                 } else {
 975                         $contact = false;
 976                         $fields = ['id', 'url', 'nick', 'name', 'alias', 'network', 'forum', 'prv'];
 977
 978                         if (strrpos($name, '+')) {
 979                                 // Is it in format @nick+number?
 980                                 $tagcid = intval(substr($name, strrpos($name, '+') + 1));
 981                                 $contact = DBA::selectFirst('contact', $fields, ['id' => $tagcid, 'uid' => $profile_uid]);
 982                         }
 983
 984                         // select someone by nick or attag in the current network
 985                         if (!DBA::isResult($contact) && ($network != "")) {
 986                                 $condition = ["(`nick` = ? OR `attag` = ?) AND `network` = ? AND `uid` = ?",
 987                                                 $name, $name, $network, $profile_uid];
 988                                 $contact = DBA::selectFirst('contact', $fields, $condition);
 989                         }
 990
 991                         //select someone by name in the current network
 992                         if (!DBA::isResult($contact) && ($network != "")) {
 993                                 $condition = ['name' => $name, 'network' => $network, 'uid' => $profile_uid];
 994                                 $contact = DBA::selectFirst('contact', $fields, $condition);
 995                         }
 996
 997                         // select someone by nick or attag in any network
 998                         if (!DBA::isResult($contact)) {
 999                                 $condition = ["(`nick` = ? OR `attag` = ?) AND `uid` = ?", $name, $name, $profile_uid];
1000                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1001                         }
1002
1003                         // select someone by name in any network
1004                         if (!DBA::isResult($contact)) {
1005                                 $condition = ['name' => $name, 'uid' => $profile_uid];
1006                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1007                         }
1008                 }
1009
1010                 // Check if $contact has been successfully loaded
1011                 if (DBA::isResult($contact)) {
1012                         if (strlen($inform) && (isset($contact["notify"]) || isset($contact["id"]))) {
1013                                 $inform .= ',';
1014                         }
1015
1016                         if (isset($contact["id"])) {
1017                                 $inform .= 'cid:' . $contact["id"];
1018                         } elseif (isset($contact["notify"])) {
1019                                 $inform  .= $contact["notify"];
1020                         }
1021
1022                         $profile = $contact["url"];
1023                         $alias   = $contact["alias"];
1024                         $newname = ($contact["name"] ?? '') ?: $contact["nick"];
1025                 }
1026
1027                 //if there is an url for this persons profile
1028                 if (isset($profile) && ($newname != "")) {
1029                         $replaced = true;
1030                         // create profile link
1031                         $profile = str_replace(',', '%2c', $profile);
1032                         $newtag = $tag_type.'[url=' . $profile . ']' . $newname . '[/url]';
1033                         $body = str_replace($tag_type . $name, $newtag, $body);
1034                         // append tag to str_tags
1035                         if (!stristr($str_tags, $newtag)) {
1036                                 if (strlen($str_tags)) {
1037                                         $str_tags .= ',';
1038                                 }
1039                                 $str_tags .= $newtag;
1040                         }
1041
1042                         /*
1043                          * Status.Net seems to require the numeric ID URL in a mention if the person isn't
1044                          * subscribed to you. But the nickname URL is OK if they are. Grrr. We'll tag both.
1045                          */
1046                         if (!empty($alias)) {
1047                                 $newtag = '@[url=' . $alias . ']' . $newname . '[/url]';
1048                                 if (!stripos($str_tags, '[url=' . $alias . ']')) {
1049                                         if (strlen($str_tags)) {
1050                                                 $str_tags .= ',';
1051                                         }
1052                                         $str_tags .= $newtag;
1053                                 }
1054                         }
1055                 }
1056         }
1057
1058         return ['replaced' => $replaced, 'contact' => $contact];
1059 }
1060
1061 function item_add_implicit_mentions(array $tags, array $thread_parent_contact, $thread_parent_id)
1062 {
1063         if (DI::config()->get('system', 'disable_implicit_mentions')) {
1064                 // Add a tag if the parent contact is from ActivityPub or OStatus (This will notify them)
1065                 if (in_array($thread_parent_contact['network'], [Protocol::OSTATUS, Protocol::ACTIVITYPUB])) {
1066                         $contact = Term::TAG_CHARACTER[Term::MENTION] . '[url=' . $thread_parent_contact['url'] . ']' . $thread_parent_contact['nick'] . '[/url]';
1067                         if (!stripos(implode($tags), '[url=' . $thread_parent_contact['url'] . ']')) {
1068                                 $tags[] = $contact;
1069                         }
1070                 }
1071         } else {
1072                 $implicit_mentions = [
1073                         $thread_parent_contact['url'] => $thread_parent_contact['nick']
1074                 ];
1075
1076                 $parent_terms = Term::tagArrayFromItemId($thread_parent_id, [Term::MENTION, Term::IMPLICIT_MENTION]);
1077
1078                 foreach ($parent_terms as $parent_term) {
1079                         $implicit_mentions[$parent_term['url']] = $parent_term['term'];
1080                 }
1081
1082                 foreach ($implicit_mentions as $url => $label) {
1083                         if ($url != \Friendica\Model\Profile::getMyURL() && !stripos(implode($tags), '[url=' . $url . ']')) {
1084                                 $tags[] = Term::TAG_CHARACTER[Term::IMPLICIT_MENTION] . '[url=' . $url . ']' . $label . '[/url]';
1085                         }
1086                 }
1087         }
1088
1089         return $tags;
1090 }