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\L10n;
  25 use Friendica\Core\Logger;
  26 use Friendica\Core\Protocol;
  27 use Friendica\Core\System;
  28 use Friendica\Core\Session;
  29 use Friendica\Core\Worker;
  30 use Friendica\Database\DBA;
  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\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 '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         $api_source = defaults($_REQUEST, 'api_source', false);
  68
  69         $message_id = ((!empty($_REQUEST['message_id']) && $api_source) ? strip_tags($_REQUEST['message_id']) : '');
  70
  71         $return_path = defaults($_REQUEST, 'return', '');
  72         $preview = intval(defaults($_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(System::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         $toplevel_item_id = intval(defaults($_REQUEST, 'parent', 0));
  90         $thr_parent_uri = trim(defaults($_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         $profile_uid = defaults($_REQUEST, 'profile_uid', local_user());
 102         $posttype = defaults($_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(L10n::t('Unable to locate original post.') . EOL);
 125                         if (!empty($_REQUEST['return'])) {
 126                                 $a->internalRedirect($return_path);
 127                         }
 128                         exit();
 129                 }
 130
 131                 $toplevel_item_id = $toplevel_item['id'];
 132                 $parent_user = $toplevel_item['uid'];
 133
 134                 $objecttype = ACTIVITY_OBJ_COMMENT;
 135         }
 136
 137         if ($toplevel_item_id) {
 138                 Logger::info('mod_item: item_post parent=' . $toplevel_item_id);
 139         }
 140
 141         $post_id     = intval(defaults($_REQUEST, 'post_id', 0));
 142         $app         = strip_tags(defaults($_REQUEST, 'source', ''));
 143         $extid       = strip_tags(defaults($_REQUEST, 'extid', ''));
 144         $object      = defaults($_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(L10n::t('Permission denied.') . EOL);
 172
 173                 if (!empty($_REQUEST['return'])) {
 174                         $a->internalRedirect($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         $body = defaults($_REQUEST, 'body', '');
 198         $has_attachment = defaults($_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                 $attachment_type  = defaults($_REQUEST, 'attachment_type',  '');
 203                 $attachment_title = defaults($_REQUEST, 'attachment_title', '');
 204                 $attachment_text  = defaults($_REQUEST, 'attachment_text',  '');
 205
 206                 $attachment_url     = hex2bin(defaults($_REQUEST, 'attachment_url',     ''));
 207                 $attachment_img_src = hex2bin(defaults($_REQUEST, 'attachment_img_src', ''));
 208
 209                 $attachment_img_width  = defaults($_REQUEST, 'attachment_img_width',  0);
 210                 $attachment_img_height = defaults($_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 .= $att_bbcode;
 230         }
 231
 232         if (!empty($orig_post)) {
 233                 $str_group_allow   = $orig_post['allow_gid'];
 234                 $str_contact_allow = $orig_post['allow_cid'];
 235                 $str_group_deny    = $orig_post['deny_gid'];
 236                 $str_contact_deny  = $orig_post['deny_cid'];
 237                 $location          = $orig_post['location'];
 238                 $coord             = $orig_post['coord'];
 239                 $verb              = $orig_post['verb'];
 240                 $objecttype        = $orig_post['object-type'];
 241                 $app               = $orig_post['app'];
 242                 $categories        = $orig_post['file'];
 243                 $title             = Strings::escapeTags(trim($_REQUEST['title']));
 244                 $body              = Strings::escapeHtml(trim($body));
 245                 $private           = $orig_post['private'];
 246                 $pubmail_enabled   = $orig_post['pubmail'];
 247                 $network           = $orig_post['network'];
 248                 $guid              = $orig_post['guid'];
 249                 $extid             = $orig_post['extid'];
 250
 251         } else {
 252
 253                 /*
 254                  * if coming from the API and no privacy settings are set,
 255                  * use the user default permissions - as they won't have
 256                  * been supplied via a form.
 257                  */
 258                 if ($api_source
 259                         && !array_key_exists('contact_allow', $_REQUEST)
 260                         && !array_key_exists('group_allow', $_REQUEST)
 261                         && !array_key_exists('contact_deny', $_REQUEST)
 262                         && !array_key_exists('group_deny', $_REQUEST)) {
 263                         $str_group_allow   = $user['allow_gid'];
 264                         $str_contact_allow = $user['allow_cid'];
 265                         $str_group_deny    = $user['deny_gid'];
 266                         $str_contact_deny  = $user['deny_cid'];
 267                 } else {
 268                         // use the posted permissions
 269                         $str_group_allow   = perms2str(defaults($_REQUEST, 'group_allow', ''));
 270                         $str_contact_allow = perms2str(defaults($_REQUEST, 'contact_allow', ''));
 271                         $str_group_deny    = perms2str(defaults($_REQUEST, 'group_deny', ''));
 272                         $str_contact_deny  = perms2str(defaults($_REQUEST, 'contact_deny', ''));
 273                 }
 274
 275                 $title             = Strings::escapeTags(trim(defaults($_REQUEST, 'title'   , '')));
 276                 $location          = Strings::escapeTags(trim(defaults($_REQUEST, 'location', '')));
 277                 $coord             = Strings::escapeTags(trim(defaults($_REQUEST, 'coord'   , '')));
 278                 $verb              = Strings::escapeTags(trim(defaults($_REQUEST, 'verb'    , '')));
 279                 $emailcc           = Strings::escapeTags(trim(defaults($_REQUEST, 'emailcc' , '')));
 280                 $body              = Strings::escapeHtml(trim($body));
 281                 $network           = Strings::escapeTags(trim(defaults($_REQUEST, 'network' , Protocol::DFRN)));
 282                 $guid              = System::createUUID();
 283
 284                 $postopts = defaults($_REQUEST, 'postopts', '');
 285
 286                 $private = ((strlen($str_group_allow) || strlen($str_contact_allow) || strlen($str_group_deny) || strlen($str_contact_deny)) ? 1 : 0);
 287
 288                 // If this is a comment, set the permissions from the parent.
 289
 290                 if ($toplevel_item) {
 291                         // for non native networks use the network of the original post as network of the item
 292                         if (($toplevel_item['network'] != Protocol::DIASPORA)
 293                                 && ($toplevel_item['network'] != Protocol::OSTATUS)
 294                                 && ($network == "")) {
 295                                 $network = $toplevel_item['network'];
 296                         }
 297
 298                         $str_contact_allow = $toplevel_item['allow_cid'];
 299                         $str_group_allow   = $toplevel_item['allow_gid'];
 300                         $str_contact_deny  = $toplevel_item['deny_cid'];
 301                         $str_group_deny    = $toplevel_item['deny_gid'];
 302                         $private           = $toplevel_item['private'];
 303
 304                         $wall              = $toplevel_item['wall'];
 305                 }
 306
 307                 $pubmail_enabled = defaults($_REQUEST, 'pubmail_enable', false) && !$private;
 308
 309                 // if using the API, we won't see pubmail_enable - figure out if it should be set
 310                 if ($api_source && $profile_uid && $profile_uid == local_user() && !$private) {
 311                         if (function_exists('imap_open') && !Config::get('system', 'imap_disabled')) {
 312                                 $pubmail_enabled = DBA::exists('mailacct', ["`uid` = ? AND `server` != ? AND `pubmail`", local_user(), '']);
 313                         }
 314                 }
 315
 316                 if (!strlen($body)) {
 317                         if ($preview) {
 318                                 exit();
 319                         }
 320                         info(L10n::t('Empty post discarded.') . EOL);
 321                         if (!empty($_REQUEST['return'])) {
 322                                 $a->internalRedirect($return_path);
 323                         }
 324                         exit();
 325                 }
 326         }
 327
 328         if (!empty($categories)) {
 329                 // get the "fileas" tags for this post
 330                 $filedas = FileTag::fileToArray($categories);
 331         }
 332
 333         // save old and new categories, so we can determine what needs to be deleted from pconfig
 334         $categories_old = $categories;
 335         $categories = FileTag::listToFile(trim(defaults($_REQUEST, 'category', '')), 'category');
 336         $categories_new = $categories;
 337
 338         if (!empty($filedas) && is_array($filedas)) {
 339                 // append the fileas stuff to the new categories list
 340                 $categories .= FileTag::arrayToFile($filedas);
 341         }
 342
 343         // get contact info for poster
 344
 345         $author = null;
 346         $self   = false;
 347         $contact_id = 0;
 348
 349         if (local_user() && ((local_user() == $profile_uid) || $allow_comment)) {
 350                 $self = true;
 351                 $author = DBA::selectFirst('contact', [], ['uid' => local_user(), 'self' => true]);
 352         } elseif (!empty(Session::getRemoteContactID($profile_uid))) {
 353                 $author = DBA::selectFirst('contact', [], ['id' => Session::getRemoteContactID($profile_uid)]);
 354         }
 355
 356         if (DBA::isResult($author)) {
 357                 $contact_id = $author['id'];
 358         }
 359
 360         // get contact info for owner
 361         if ($profile_uid == local_user() || $allow_comment) {
 362                 $contact_record = $author;
 363         } else {
 364                 $contact_record = DBA::selectFirst('contact', [], ['uid' => $profile_uid, 'self' => true]);
 365         }
 366
 367         // Look for any tags and linkify them
 368         $str_tags = '';
 369         $inform   = '';
 370
 371         $tags = BBCode::getTags($body);
 372
 373         if ($thread_parent_id && !\Friendica\Content\Feature::isEnabled($uid, 'explicit_mentions')) {
 374                 $tags = item_add_implicit_mentions($tags, $thread_parent_contact, $thread_parent_id);
 375         }
 376
 377         $tagged = [];
 378
 379         $private_forum = false;
 380         $only_to_forum = false;
 381         $forum_contact = [];
 382
 383         if (count($tags)) {
 384                 foreach ($tags as $tag) {
 385                         $tag_type = substr($tag, 0, 1);
 386
 387                         if ($tag_type == Term::TAG_CHARACTER[Term::HASHTAG]) {
 388                                 continue;
 389                         }
 390
 391                         /*
 392                          * If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
 393                          * Robert Johnson should be first in the $tags array
 394                          */
 395                         $fullnametagged = false;
 396                         /// @TODO $tagged is initialized above if () block and is not filled, maybe old-lost code?
 397                         foreach ($tagged as $nextTag) {
 398                                 if (stristr($nextTag, $tag . ' ')) {
 399                                         $fullnametagged = true;
 400                                         break;
 401                                 }
 402                         }
 403                         if ($fullnametagged) {
 404                                 continue;
 405                         }
 406
 407                         $success = handle_tag($body, $inform, $str_tags, local_user() ? local_user() : $profile_uid, $tag, $network);
 408                         if ($success['replaced']) {
 409                                 $tagged[] = $tag;
 410                         }
 411                         // When the forum is private or the forum is addressed with a "!" make the post private
 412                         if (is_array($success['contact']) && (!empty($success['contact']['prv']) || ($tag_type == Term::TAG_CHARACTER[Term::EXCLUSIVE_MENTION]))) {
 413                                 $private_forum = $success['contact']['prv'];
 414                                 $only_to_forum = ($tag_type == Term::TAG_CHARACTER[Term::EXCLUSIVE_MENTION]);
 415                                 $private_id = $success['contact']['id'];
 416                                 $forum_contact = $success['contact'];
 417                         } elseif (is_array($success['contact']) && !empty($success['contact']['forum']) &&
 418                                 ($str_contact_allow == '<' . $success['contact']['id'] . '>')) {
 419                                 $private_forum = false;
 420                                 $only_to_forum = true;
 421                                 $private_id = $success['contact']['id'];
 422                                 $forum_contact = $success['contact'];
 423                         }
 424                 }
 425         }
 426
 427         $original_contact_id = $contact_id;
 428
 429         if (!$toplevel_item_id && count($forum_contact) && ($private_forum || $only_to_forum)) {
 430                 // we tagged a forum in a top level post. Now we change the post
 431                 $private = $private_forum;
 432
 433                 $str_group_allow = '';
 434                 $str_contact_deny = '';
 435                 $str_group_deny = '';
 436                 if ($private_forum) {
 437                         $str_contact_allow = '<' . $private_id . '>';
 438                 } else {
 439                         $str_contact_allow = '';
 440                 }
 441                 $contact_id = $private_id;
 442                 $contact_record = $forum_contact;
 443                 $_REQUEST['origin'] = false;
 444                 $wall = 0;
 445         }
 446
 447         /*
 448          * When a photo was uploaded into the message using the (profile wall) ajax
 449          * uploader, The permissions are initially set to disallow anybody but the
 450          * owner from seeing it. This is because the permissions may not yet have been
 451          * set for the post. If it's private, the photo permissions should be set
 452          * appropriately. But we didn't know the final permissions on the post until
 453          * now. So now we'll look for links of uploaded messages that are in the
 454          * post and set them to the same permissions as the post itself.
 455          */
 456
 457         $match = null;
 458
 459         if (!$preview && Photo::setPermissionFromBody($body, $profile_uid, $original_contact_id, $str_contact_allow, $str_group_allow, $str_contact_deny, $str_group_deny)) {
 460                 $objecttype = ACTIVITY_OBJ_IMAGE;
 461         }
 462
 463         /*
 464          * Next link in any attachment references we find in the post.
 465          */
 466         $match = false;
 467
 468         /// @todo these lines should be moved to Model/Attach (Once it exists)
 469         if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
 470                 $attaches = $match[1];
 471                 if (count($attaches)) {
 472                         foreach ($attaches as $attach) {
 473                                 // Ensure to only modify attachments that you own
 474                                 $srch = '<' . intval($original_contact_id) . '>';
 475
 476                                 $condition = ['allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
 477                                                 'id' => $attach];
 478                                 if (!Attach::exists($condition)) {
 479                                         continue;
 480                                 }
 481
 482                                 $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
 483                                                 'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
 484                                 $condition = ['id' => $attach];
 485                                 Attach::update($fields, $condition);
 486                         }
 487                 }
 488         }
 489
 490         // embedded bookmark or attachment in post? set bookmark flag
 491
 492         $data = BBCode::getAttachmentData($body);
 493         if ((preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data["type"]))
 494                 && ($posttype != Item::PT_PERSONAL_NOTE)) {
 495                 $posttype = Item::PT_PAGE;
 496                 $objecttype = ACTIVITY_OBJ_BOOKMARK;
 497         }
 498
 499         $body = bb_translate_video($body);
 500
 501
 502         // Fold multi-line [code] sequences
 503         $body = preg_replace('/\[\/code\]\s*\[code\]/ism', "\n", $body);
 504
 505         $body = BBCode::scaleExternalImages($body, false);
 506
 507         // Setting the object type if not defined before
 508         if (!$objecttype) {
 509                 $objecttype = ACTIVITY_OBJ_NOTE; // Default value
 510                 $objectdata = BBCode::getAttachedData($body);
 511
 512                 if ($objectdata["type"] == "link") {
 513                         $objecttype = ACTIVITY_OBJ_BOOKMARK;
 514                 } elseif ($objectdata["type"] == "video") {
 515                         $objecttype = ACTIVITY_OBJ_VIDEO;
 516                 } elseif ($objectdata["type"] == "photo") {
 517                         $objecttype = ACTIVITY_OBJ_IMAGE;
 518                 }
 519
 520         }
 521
 522         $attachments = '';
 523         $match = false;
 524
 525         if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
 526                 foreach ($match[2] as $mtch) {
 527                         $fields = ['id', 'filename', 'filesize', 'filetype'];
 528                         $attachment = Attach::selectFirst($fields, ['id' => $mtch]);
 529                         if ($attachment !== false) {
 530                                 if (strlen($attachments)) {
 531                                         $attachments .= ',';
 532                                 }
 533                                 $attachments .= '[attach]href="' . System::baseUrl() . '/attach/' . $attachment['id'] .
 534                                                 '" length="' . $attachment['filesize'] . '" type="' . $attachment['filetype'] .
 535                                                 '" title="' . ($attachment['filename'] ? $attachment['filename'] : '') . '"[/attach]';
 536                         }
 537                         $body = str_replace($match[1],'',$body);
 538                 }
 539         }
 540
 541         if (!strlen($verb)) {
 542                 $verb = ACTIVITY_POST;
 543         }
 544
 545         if ($network == "") {
 546                 $network = Protocol::DFRN;
 547         }
 548
 549         $gravity = ($toplevel_item_id ? GRAVITY_COMMENT : GRAVITY_PARENT);
 550
 551         // even if the post arrived via API we are considering that it
 552         // originated on this site by default for determining relayability.
 553
 554         // Don't use "defaults" here. It would turn 0 to 1
 555         if (!isset($_REQUEST['origin'])) {
 556                 $origin = 1;
 557         } else {
 558                 $origin = $_REQUEST['origin'];
 559         }
 560
 561         $uri = ($message_id ? $message_id : Item::newURI($api_source ? $profile_uid : $uid, $guid));
 562
 563         // Fallback so that we alway have a parent uri
 564         if (!$thr_parent_uri || !$toplevel_item_id) {
 565                 $thr_parent_uri = $uri;
 566         }
 567
 568         $datarray = [];
 569         $datarray['uid']           = $profile_uid;
 570         $datarray['wall']          = $wall;
 571         $datarray['gravity']       = $gravity;
 572         $datarray['network']       = $network;
 573         $datarray['contact-id']    = $contact_id;
 574         $datarray['owner-name']    = $contact_record['name'];
 575         $datarray['owner-link']    = $contact_record['url'];
 576         $datarray['owner-avatar']  = $contact_record['thumb'];
 577         $datarray['owner-id']      = Contact::getIdForURL($datarray['owner-link']);
 578         $datarray['author-name']   = $author['name'];
 579         $datarray['author-link']   = $author['url'];
 580         $datarray['author-avatar'] = $author['thumb'];
 581         $datarray['author-id']     = Contact::getIdForURL($datarray['author-link']);
 582         $datarray['created']       = DateTimeFormat::utcNow();
 583         $datarray['edited']        = DateTimeFormat::utcNow();
 584         $datarray['commented']     = DateTimeFormat::utcNow();
 585         $datarray['received']      = DateTimeFormat::utcNow();
 586         $datarray['changed']       = DateTimeFormat::utcNow();
 587         $datarray['extid']         = $extid;
 588         $datarray['guid']          = $guid;
 589         $datarray['uri']           = $uri;
 590         $datarray['title']         = $title;
 591         $datarray['body']          = $body;
 592         $datarray['app']           = $app;
 593         $datarray['location']      = $location;
 594         $datarray['coord']         = $coord;
 595         $datarray['tag']           = $str_tags;
 596         $datarray['file']          = $categories;
 597         $datarray['inform']        = $inform;
 598         $datarray['verb']          = $verb;
 599         $datarray['post-type']     = $posttype;
 600         $datarray['object-type']   = $objecttype;
 601         $datarray['allow_cid']     = $str_contact_allow;
 602         $datarray['allow_gid']     = $str_group_allow;
 603         $datarray['deny_cid']      = $str_contact_deny;
 604         $datarray['deny_gid']      = $str_group_deny;
 605         $datarray['private']       = $private;
 606         $datarray['pubmail']       = $pubmail_enabled;
 607         $datarray['attach']        = $attachments;
 608
 609         // This is not a bug. The item store function changes 'parent-uri' to 'thr-parent' and fetches 'parent-uri' new. (We should change this)
 610         $datarray['parent-uri']    = $thr_parent_uri;
 611
 612         $datarray['postopts']      = $postopts;
 613         $datarray['origin']        = $origin;
 614         $datarray['moderated']     = false;
 615         $datarray['object']        = $object;
 616
 617         /*
 618          * These fields are for the convenience of addons...
 619          * 'self' if true indicates the owner is posting on their own wall
 620          * If parent is 0 it is a top-level post.
 621          */
 622         $datarray['parent']        = $toplevel_item_id;
 623         $datarray['self']          = $self;
 624
 625         // This triggers posts via API and the mirror functions
 626         $datarray['api_source'] = $api_source;
 627
 628         // This field is for storing the raw conversation data
 629         $datarray['protocol'] = Conversation::PARCEL_DFRN;
 630
 631         $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $datarray['parent-uri']]);
 632         if (DBA::isResult($conversation)) {
 633                 if ($conversation['conversation-uri'] != '') {
 634                         $datarray['conversation-uri'] = $conversation['conversation-uri'];
 635                 }
 636                 if ($conversation['conversation-href'] != '') {
 637                         $datarray['conversation-href'] = $conversation['conversation-href'];
 638                 }
 639         }
 640
 641         if ($orig_post) {
 642                 $datarray['edit'] = true;
 643         } else {
 644                 $datarray['edit'] = false;
 645         }
 646
 647         // Check for hashtags in the body and repair or add hashtag links
 648         if ($preview || $orig_post) {
 649                 Item::setHashtags($datarray);
 650         }
 651
 652         // preview mode - prepare the body for display and send it via json
 653         if ($preview) {
 654                 // We set the datarray ID to -1 because in preview mode the dataray
 655                 // doesn't have an ID.
 656                 $datarray["id"] = -1;
 657                 $datarray["item_id"] = -1;
 658                 $datarray["author-network"] = Protocol::DFRN;
 659
 660                 $o = conversation($a, [array_merge($contact_record, $datarray)], new Pager($a->query_string), 'search', false, true);
 661                 Logger::log('preview: ' . $o);
 662                 echo json_encode(['preview' => $o]);
 663                 exit();
 664         }
 665
 666         Hook::callAll('post_local',$datarray);
 667
 668         if (!empty($datarray['cancel'])) {
 669                 Logger::log('mod_item: post cancelled by addon.');
 670                 if ($return_path) {
 671                         $a->internalRedirect($return_path);
 672                 }
 673
 674                 $json = ['cancel' => 1];
 675                 if (!empty($_REQUEST['jsreload'])) {
 676                         $json['reload'] = System::baseUrl() . '/' . $_REQUEST['jsreload'];
 677                 }
 678
 679                 echo json_encode($json);
 680                 exit();
 681         }
 682
 683         if ($orig_post) {
 684                 // Fill the cache field
 685                 // This could be done in Item::update as well - but we have to check for the existance of some fields.
 686                 Item::putInCache($datarray);
 687
 688                 $fields = [
 689                         'title' => $datarray['title'],
 690                         'body' => $datarray['body'],
 691                         'tag' => $datarray['tag'],
 692                         'attach' => $datarray['attach'],
 693                         'file' => $datarray['file'],
 694                         'rendered-html' => $datarray['rendered-html'],
 695                         'rendered-hash' => $datarray['rendered-hash'],
 696                         'edited' => DateTimeFormat::utcNow(),
 697                         'changed' => DateTimeFormat::utcNow()];
 698
 699                 Item::update($fields, ['id' => $post_id]);
 700
 701                 // update filetags in pconfig
 702                 FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
 703
 704                 if (!empty($_REQUEST['return']) && strlen($return_path)) {
 705                         Logger::log('return: ' . $return_path);
 706                         $a->internalRedirect($return_path);
 707                 }
 708                 exit();
 709         }
 710
 711         unset($datarray['edit']);
 712         unset($datarray['self']);
 713         unset($datarray['api_source']);
 714
 715         if ($origin) {
 716                 $signed = Diaspora::createCommentSignature($uid, $datarray);
 717                 if (!empty($signed)) {
 718                         $datarray['diaspora_signed_text'] = json_encode($signed);
 719                 }
 720         }
 721
 722         $post_id = Item::insert($datarray);
 723
 724         if (!$post_id) {
 725                 Logger::log("Item wasn't stored.");
 726                 $a->internalRedirect($return_path);
 727         }
 728
 729         $datarray = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 730
 731         if (!DBA::isResult($datarray)) {
 732                 Logger::log("Item with id ".$post_id." couldn't be fetched.");
 733                 $a->internalRedirect($return_path);
 734         }
 735
 736         // update filetags in pconfig
 737         FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
 738
 739         // These notifications are sent if someone else is commenting other your wall
 740         if ($toplevel_item_id) {
 741                 if ($contact_record != $author) {
 742                         notification([
 743                                 'type'         => NOTIFY_COMMENT,
 744                                 'notify_flags' => $user['notify-flags'],
 745                                 'language'     => $user['language'],
 746                                 'to_name'      => $user['username'],
 747                                 'to_email'     => $user['email'],
 748                                 'uid'          => $user['uid'],
 749                                 'item'         => $datarray,
 750                                 'link'         => System::baseUrl().'/display/'.urlencode($datarray['guid']),
 751                                 'source_name'  => $datarray['author-name'],
 752                                 'source_link'  => $datarray['author-link'],
 753                                 'source_photo' => $datarray['author-avatar'],
 754                                 'verb'         => ACTIVITY_POST,
 755                                 'otype'        => 'item',
 756                                 'parent'       => $toplevel_item_id,
 757                                 'parent_uri'   => $toplevel_item['uri']
 758                         ]);
 759                 }
 760         } else {
 761                 if (($contact_record != $author) && !count($forum_contact)) {
 762                         notification([
 763                                 'type'         => NOTIFY_WALL,
 764                                 'notify_flags' => $user['notify-flags'],
 765                                 'language'     => $user['language'],
 766                                 'to_name'      => $user['username'],
 767                                 'to_email'     => $user['email'],
 768                                 'uid'          => $user['uid'],
 769                                 'item'         => $datarray,
 770                                 'link'         => System::baseUrl().'/display/'.urlencode($datarray['guid']),
 771                                 'source_name'  => $datarray['author-name'],
 772                                 'source_link'  => $datarray['author-link'],
 773                                 'source_photo' => $datarray['author-avatar'],
 774                                 'verb'         => ACTIVITY_POST,
 775                                 'otype'        => 'item'
 776                         ]);
 777                 }
 778         }
 779
 780         Hook::callAll('post_local_end', $datarray);
 781
 782         if (strlen($emailcc) && $profile_uid == local_user()) {
 783                 $erecips = explode(',', $emailcc);
 784                 if (count($erecips)) {
 785                         foreach ($erecips as $recip) {
 786                                 $addr = trim($recip);
 787                                 if (!strlen($addr)) {
 788                                         continue;
 789                                 }
 790                                 $disclaimer = '<hr />' . L10n::t('This message was sent to you by %s, a member of the Friendica social network.', $a->user['username'])
 791                                         . '<br />';
 792                                 $disclaimer .= L10n::t('You may visit them online at %s', System::baseUrl() . '/profile/' . $a->user['nickname']) . EOL;
 793                                 $disclaimer .= L10n::t('Please contact the sender by replying to this post if you do not wish to receive these messages.') . EOL;
 794                                 if (!$datarray['title']=='') {
 795                                         $subject = Email::encodeHeader($datarray['title'], 'UTF-8');
 796                                 } else {
 797                                         $subject = Email::encodeHeader('[Friendica]' . ' ' . L10n::t('%s posted an update.', $a->user['username']), 'UTF-8');
 798                                 }
 799                                 $link = '<a href="' . System::baseUrl() . '/profile/' . $a->user['nickname'] . '"><img src="' . $author['thumb'] . '" alt="' . $a->user['username'] . '" /></a><br /><br />';
 800                                 $html    = Item::prepareBody($datarray);
 801                                 $message = '<html><body>' . $link . $html . $disclaimer . '</body></html>';
 802                                 $params =  [
 803                                         'fromName' => $a->user['username'],
 804                                         'fromEmail' => $a->user['email'],
 805                                         'toEmail' => $addr,
 806                                         'replyTo' => $a->user['email'],
 807                                         'messageSubject' => $subject,
 808                                         'htmlVersion' => $message,
 809                                         'textVersion' => HTML::toPlaintext($html.$disclaimer)
 810                                 ];
 811                                 Emailer::send($params);
 812                         }
 813                 }
 814         }
 815
 816         // Insert an item entry for UID=0 for global entries.
 817         // We now do it in the background to save some time.
 818         // This is important in interactive environments like the frontend or the API.
 819         // We don't fork a new process since this is done anyway with the following command
 820         Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], "CreateShadowEntry", $post_id);
 821
 822         // When we are doing some forum posting via ! we have to start the notifier manually.
 823         // These kind of posts don't initiate the notifier call in the item class.
 824         if ($only_to_forum) {
 825                 Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => false], "Notifier", Delivery::POST, $post_id);
 826         }
 827
 828         Logger::log('post_complete');
 829
 830         if ($api_source) {
 831                 return $post_id;
 832         }
 833
 834         item_post_return(System::baseUrl(), $api_source, $return_path);
 835         // NOTREACHED
 836 }
 837
 838 function item_post_return($baseurl, $api_source, $return_path)
 839 {
 840         // figure out how to return, depending on from whence we came
 841     $a = \get_app();
 842
 843         if ($api_source) {
 844                 return;
 845         }
 846
 847         if ($return_path) {
 848                 $a->internalRedirect($return_path);
 849         }
 850
 851         $json = ['success' => 1];
 852         if (!empty($_REQUEST['jsreload'])) {
 853                 $json['reload'] = $baseurl . '/' . $_REQUEST['jsreload'];
 854         }
 855
 856         Logger::log('post_json: ' . print_r($json, true), Logger::DEBUG);
 857
 858         echo json_encode($json);
 859         exit();
 860 }
 861
 862 function item_content(App $a)
 863 {
 864         if (!Session::isAuthenticated()) {
 865                 return;
 866         }
 867
 868         $o = '';
 869
 870         if (($a->argc >= 3) && ($a->argv[1] === 'drop') && intval($a->argv[2])) {
 871                 if ($a->isAjax()) {
 872                         $o = Item::deleteForUser(['id' => $a->argv[2]], local_user());
 873                 } else {
 874                         if (!empty($a->argv[3])) {
 875                                 $o = drop_item($a->argv[2], $a->argv[3]);
 876                         }
 877                         else {
 878                                 $o = drop_item($a->argv[2]);
 879                         }
 880                 }
 881
 882                 if ($a->isAjax()) {
 883                         // ajax return: [<item id>, 0 (no perm) | <owner id>]
 884                         echo json_encode([intval($a->argv[2]), intval($o)]);
 885                         exit();
 886                 }
 887         }
 888
 889         return $o;
 890 }
 891
 892 /**
 893  * This function removes the tag $tag from the text $body and replaces it with
 894  * the appropriate link.
 895  *
 896  * @param App     $a
 897  * @param string  $body     the text to replace the tag in
 898  * @param string  $inform   a comma-seperated string containing everybody to inform
 899  * @param string  $str_tags string to add the tag to
 900  * @param integer $profile_uid
 901  * @param string  $tag      the tag to replace
 902  * @param string  $network  The network of the post
 903  *
 904  * @return array|bool ['replaced' => $replaced, 'contact' => $contact];
 905  * @throws ImagickException
 906  * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 907  */
 908 function handle_tag(&$body, &$inform, &$str_tags, $profile_uid, $tag, $network = "")
 909 {
 910         $replaced = false;
 911         $r = null;
 912
 913         //is it a person tag?
 914         if (Term::isType($tag, Term::MENTION, Term::IMPLICIT_MENTION, Term::EXCLUSIVE_MENTION)) {
 915                 $tag_type = substr($tag, 0, 1);
 916                 //is it already replaced?
 917                 if (strpos($tag, '[url=')) {
 918                         //append tag to str_tags
 919                         if (!stristr($str_tags, $tag)) {
 920                                 if (strlen($str_tags)) {
 921                                         $str_tags .= ',';
 922                                 }
 923                                 $str_tags .= $tag;
 924                         }
 925
 926                         // Checking for the alias that is used for OStatus
 927                         $pattern = "/[@!]\[url\=(.*?)\](.*?)\[\/url\]/ism";
 928                         if (preg_match($pattern, $tag, $matches)) {
 929                                 $data = Contact::getDetailsByURL($matches[1]);
 930
 931                                 if ($data["alias"] != "") {
 932                                         $newtag = '@[url=' . $data["alias"] . ']' . $data["nick"] . '[/url]';
 933
 934                                         if (!stripos($str_tags, '[url=' . $data["alias"] . ']')) {
 935                                                 if (strlen($str_tags)) {
 936                                                         $str_tags .= ',';
 937                                                 }
 938
 939                                                 $str_tags .= $newtag;
 940                                         }
 941                                 }
 942                         }
 943
 944                         return $replaced;
 945                 }
 946
 947                 //get the person's name
 948                 $name = substr($tag, 1);
 949
 950                 // Sometimes the tag detection doesn't seem to work right
 951                 // This is some workaround
 952                 $nameparts = explode(" ", $name);
 953                 $name = $nameparts[0];
 954
 955                 // Try to detect the contact in various ways
 956                 if (strpos($name, 'http://')) {
 957                         // At first we have to ensure that the contact exists
 958                         Contact::getIdForURL($name);
 959
 960                         // Now we should have something
 961                         $contact = Contact::getDetailsByURL($name);
 962                 } elseif (strpos($name, '@')) {
 963                         // This function automatically probes when no entry was found
 964                         $contact = Contact::getDetailsByAddr($name);
 965                 } else {
 966                         $contact = false;
 967                         $fields = ['id', 'url', 'nick', 'name', 'alias', 'network', 'forum', 'prv'];
 968
 969                         if (strrpos($name, '+')) {
 970                                 // Is it in format @nick+number?
 971                                 $tagcid = intval(substr($name, strrpos($name, '+') + 1));
 972                                 $contact = DBA::selectFirst('contact', $fields, ['id' => $tagcid, 'uid' => $profile_uid]);
 973                         }
 974
 975                         // select someone by nick or attag in the current network
 976                         if (!DBA::isResult($contact) && ($network != "")) {
 977                                 $condition = ["(`nick` = ? OR `attag` = ?) AND `network` = ? AND `uid` = ?",
 978                                                 $name, $name, $network, $profile_uid];
 979                                 $contact = DBA::selectFirst('contact', $fields, $condition);
 980                         }
 981
 982                         //select someone by name in the current network
 983                         if (!DBA::isResult($contact) && ($network != "")) {
 984                                 $condition = ['name' => $name, 'network' => $network, 'uid' => $profile_uid];
 985                                 $contact = DBA::selectFirst('contact', $fields, $condition);
 986                         }
 987
 988                         // select someone by nick or attag in any network
 989                         if (!DBA::isResult($contact)) {
 990                                 $condition = ["(`nick` = ? OR `attag` = ?) AND `uid` = ?", $name, $name, $profile_uid];
 991                                 $contact = DBA::selectFirst('contact', $fields, $condition);
 992                         }
 993
 994                         // select someone by name in any network
 995                         if (!DBA::isResult($contact)) {
 996                                 $condition = ['name' => $name, 'uid' => $profile_uid];
 997                                 $contact = DBA::selectFirst('contact', $fields, $condition);
 998                         }
 999                 }
1000
1001                 // Check if $contact has been successfully loaded
1002                 if (DBA::isResult($contact)) {
1003                         if (strlen($inform) && (isset($contact["notify"]) || isset($contact["id"]))) {
1004                                 $inform .= ',';
1005                         }
1006
1007                         if (isset($contact["id"])) {
1008                                 $inform .= 'cid:' . $contact["id"];
1009                         } elseif (isset($contact["notify"])) {
1010                                 $inform  .= $contact["notify"];
1011                         }
1012
1013                         $profile = $contact["url"];
1014                         $alias   = $contact["alias"];
1015                         $newname = defaults($contact, "name", $contact["nick"]);
1016                 }
1017
1018                 //if there is an url for this persons profile
1019                 if (isset($profile) && ($newname != "")) {
1020                         $replaced = true;
1021                         // create profile link
1022                         $profile = str_replace(',', '%2c', $profile);
1023                         $newtag = $tag_type.'[url=' . $profile . ']' . $newname . '[/url]';
1024                         $body = str_replace($tag_type . $name, $newtag, $body);
1025                         // append tag to str_tags
1026                         if (!stristr($str_tags, $newtag)) {
1027                                 if (strlen($str_tags)) {
1028                                         $str_tags .= ',';
1029                                 }
1030                                 $str_tags .= $newtag;
1031                         }
1032
1033                         /*
1034                          * Status.Net seems to require the numeric ID URL in a mention if the person isn't
1035                          * subscribed to you. But the nickname URL is OK if they are. Grrr. We'll tag both.
1036                          */
1037                         if (!empty($alias)) {
1038                                 $newtag = '@[url=' . $alias . ']' . $newname . '[/url]';
1039                                 if (!stripos($str_tags, '[url=' . $alias . ']')) {
1040                                         if (strlen($str_tags)) {
1041                                                 $str_tags .= ',';
1042                                         }
1043                                         $str_tags .= $newtag;
1044                                 }
1045                         }
1046                 }
1047         }
1048
1049         return ['replaced' => $replaced, 'contact' => $contact];
1050 }
1051
1052 function item_add_implicit_mentions(array $tags, array $thread_parent_contact, $thread_parent_id)
1053 {
1054         if (Config::get('system', 'disable_implicit_mentions')) {
1055                 // Add a tag if the parent contact is from ActivityPub or OStatus (This will notify them)
1056                 if (in_array($thread_parent_contact['network'], [Protocol::OSTATUS, Protocol::ACTIVITYPUB])) {
1057                         $contact = Term::TAG_CHARACTER[Term::MENTION] . '[url=' . $thread_parent_contact['url'] . ']' . $thread_parent_contact['nick'] . '[/url]';
1058                         if (!stripos(implode($tags), '[url=' . $thread_parent_contact['url'] . ']')) {
1059                                 $tags[] = $contact;
1060                         }
1061                 }
1062         } else {
1063                 $implicit_mentions = [
1064                         $thread_parent_contact['url'] => $thread_parent_contact['nick']
1065                 ];
1066
1067                 $parent_terms = Term::tagArrayFromItemId($thread_parent_id, [Term::MENTION, Term::IMPLICIT_MENTION]);
1068
1069                 foreach ($parent_terms as $parent_term) {
1070                         $implicit_mentions[$parent_term['url']] = $parent_term['term'];
1071                 }
1072
1073                 foreach ($implicit_mentions as $url => $label) {
1074                         if ($url != \Friendica\Model\Profile::getMyURL() && !stripos(implode($tags), '[url=' . $url . ']')) {
1075                                 $tags[] = Term::TAG_CHARACTER[Term::IMPLICIT_MENTION] . '[url=' . $url . ']' . $label . '[/url]';
1076                         }
1077                 }
1078         }
1079
1080         return $tags;
1081 }