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\Worker;
  29 use Friendica\Database\DBA;
  30 use Friendica\Model\Attach;
  31 use Friendica\Model\Contact;
  32 use Friendica\Model\Conversation;
  33 use Friendica\Model\FileTag;
  34 use Friendica\Model\Item;
  35 use Friendica\Model\Photo;
  36 use Friendica\Model\Term;
  37 use Friendica\Protocol\Diaspora;
  38 use Friendica\Protocol\Email;
  39 use Friendica\Util\DateTimeFormat;
  40 use Friendica\Util\Emailer;
  41 use Friendica\Util\Security;
  42 use Friendica\Util\Strings;
  43
  44 require_once 'include/items.php';
  45
  46 function item_post(App $a) {
  47         if (!local_user() && !remote_user()) {
  48                 return 0;
  49         }
  50
  51         $uid = local_user();
  52
  53         if (!empty($_REQUEST['dropitems'])) {
  54                 $arr_drop = explode(',', $_REQUEST['dropitems']);
  55                 drop_items($arr_drop);
  56                 $json = ['success' => 1];
  57                 echo json_encode($json);
  58                 exit();
  59         }
  60
  61         Hook::callAll('post_local_start', $_REQUEST);
  62
  63         Logger::log('postvars ' . print_r($_REQUEST, true), Logger::DATA);
  64
  65         $api_source = defaults($_REQUEST, 'api_source', false);
  66
  67         $message_id = ((!empty($_REQUEST['message_id']) && $api_source) ? strip_tags($_REQUEST['message_id']) : '');
  68
  69         $return_path = defaults($_REQUEST, 'return', '');
  70         $preview = intval(defaults($_REQUEST, 'preview', 0));
  71
  72         /*
  73          * Check for doubly-submitted posts, and reject duplicates
  74          * Note that we have to ignore previews, otherwise nothing will post
  75          * after it's been previewed
  76          */
  77         if (!$preview && !empty($_REQUEST['post_id_random'])) {
  78                 if (!empty($_SESSION['post-random']) && $_SESSION['post-random'] == $_REQUEST['post_id_random']) {
  79                         Logger::log("item post: duplicate post", Logger::DEBUG);
  80                         item_post_return(System::baseUrl(), $api_source, $return_path);
  81                 } else {
  82                         $_SESSION['post-random'] = $_REQUEST['post_id_random'];
  83                 }
  84         }
  85
  86         // Is this a reply to something?
  87         $toplevel_item_id = intval(defaults($_REQUEST, 'parent', 0));
  88         $thr_parent_uri = trim(defaults($_REQUEST, 'parent_uri', ''));
  89
  90         $thread_parent_id = 0;
  91         $thread_parent_contact = null;
  92
  93         $toplevel_item = null;
  94         $parent_user = null;
  95
  96         $parent_contact = null;
  97
  98         $objecttype = null;
  99         $profile_uid = defaults($_REQUEST, 'profile_uid', local_user());
 100         $posttype = defaults($_REQUEST, 'post_type', Item::PT_ARTICLE);
 101
 102         if ($toplevel_item_id || $thr_parent_uri) {
 103                 if ($toplevel_item_id) {
 104                         $toplevel_item = Item::selectFirst([], ['id' => $toplevel_item_id]);
 105                 } elseif ($thr_parent_uri) {
 106                         $toplevel_item = Item::selectFirst([], ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
 107                 }
 108
 109                 // if this isn't the top-level parent of the conversation, find it
 110                 if (DBA::isResult($toplevel_item)) {
 111                         // The URI and the contact is taken from the direct parent which needn't to be the top parent
 112                         $thread_parent_id = $toplevel_item['id'];
 113                         $thr_parent_uri = $toplevel_item['uri'];
 114                         $thread_parent_contact = Contact::getDetailsByURL($toplevel_item["author-link"]);
 115
 116                         if ($toplevel_item['id'] != $toplevel_item['parent']) {
 117                                 $toplevel_item = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $toplevel_item['parent']]);
 118                         }
 119                 }
 120
 121                 if (!DBA::isResult($toplevel_item)) {
 122                         notice(L10n::t('Unable to locate original post.') . EOL);
 123                         if (!empty($_REQUEST['return'])) {
 124                                 $a->internalRedirect($return_path);
 125                         }
 126                         exit();
 127                 }
 128
 129                 $toplevel_item_id = $toplevel_item['id'];
 130                 $parent_user = $toplevel_item['uid'];
 131
 132                 $objecttype = ACTIVITY_OBJ_COMMENT;
 133         }
 134
 135         if ($toplevel_item_id) {
 136                 Logger::info('mod_item: item_post parent=' . $toplevel_item_id);
 137         }
 138
 139         $post_id     = intval(defaults($_REQUEST, 'post_id', 0));
 140         $app         = strip_tags(defaults($_REQUEST, 'source', ''));
 141         $extid       = strip_tags(defaults($_REQUEST, 'extid', ''));
 142         $object      = defaults($_REQUEST, 'object', '');
 143
 144         // Don't use "defaults" here. It would turn 0 to 1
 145         if (!isset($_REQUEST['wall'])) {
 146                 $wall = 1;
 147         } else {
 148                 $wall = $_REQUEST['wall'];
 149         }
 150
 151         // Ensure that the user id in a thread always stay the same
 152         if (!is_null($parent_user) && in_array($parent_user, [local_user(), 0])) {
 153                 $profile_uid = $parent_user;
 154         }
 155
 156         // Check for multiple posts with the same message id (when the post was created via API)
 157         if (($message_id != '') && ($profile_uid != 0)) {
 158                 if (Item::exists(['uri' => $message_id, 'uid' => $profile_uid])) {
 159                         Logger::log("Message with URI ".$message_id." already exists for user ".$profile_uid, Logger::DEBUG);
 160                         return 0;
 161                 }
 162         }
 163
 164         // Allow commenting if it is an answer to a public post
 165         $allow_comment = local_user() && ($profile_uid == 0) && $toplevel_item_id && in_array($toplevel_item['network'], [Protocol::ACTIVITYPUB, Protocol::OSTATUS, Protocol::DIASPORA, Protocol::DFRN]);
 166
 167         // Now check that valid personal details have been provided
 168         if (!Security::canWriteToUserWall($profile_uid) && !$allow_comment) {
 169                 notice(L10n::t('Permission denied.') . EOL);
 170
 171                 if (!empty($_REQUEST['return'])) {
 172                         $a->internalRedirect($return_path);
 173                 }
 174
 175                 exit();
 176         }
 177
 178         // Init post instance
 179         $orig_post = null;
 180
 181         // is this an edited post?
 182         if ($post_id > 0) {
 183                 $orig_post = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 184         }
 185
 186         $user = DBA::selectFirst('user', [], ['uid' => $profile_uid]);
 187
 188         if (!DBA::isResult($user) && !$toplevel_item_id) {
 189                 return 0;
 190         }
 191
 192         $categories = '';
 193         $postopts = '';
 194         $emailcc = '';
 195         $body = defaults($_REQUEST, 'body', '');
 196         $has_attachment = defaults($_REQUEST, 'has_attachment', 0);
 197
 198         // If we have a speparate attachment, we need to add it to the body.
 199         if (!empty($has_attachment)) {
 200                 $attachment_type  = defaults($_REQUEST, 'attachment_type',  '');
 201                 $attachment_title = defaults($_REQUEST, 'attachment_title', '');
 202                 $attachment_text  = defaults($_REQUEST, 'attachment_text',  '');
 203
 204                 $attachment_url     = hex2bin(defaults($_REQUEST, 'attachment_url',     ''));
 205                 $attachment_img_src = hex2bin(defaults($_REQUEST, 'attachment_img_src', ''));
 206
 207                 $attachment_img_width  = defaults($_REQUEST, 'attachment_img_width',  0);
 208                 $attachment_img_height = defaults($_REQUEST, 'attachment_img_height', 0);
 209                 $attachment = [
 210                         'type'   => $attachment_type,
 211                         'title'  => $attachment_title,
 212                         'text'   => $attachment_text,
 213                         'url'    => $attachment_url,
 214                 ];
 215
 216                 if (!empty($attachment_img_src)) {
 217                         $attachment['images'] = [
 218                                 0 => [
 219                                         'src'    => $attachment_img_src,
 220                                         'width'  => $attachment_img_width,
 221                                         'height' => $attachment_img_height
 222                                 ]
 223                         ];
 224                 }
 225
 226                 $att_bbcode = add_page_info_data($attachment);
 227                 $body .= $att_bbcode;
 228         }
 229
 230         if (!empty($orig_post)) {
 231                 $str_group_allow   = $orig_post['allow_gid'];
 232                 $str_contact_allow = $orig_post['allow_cid'];
 233                 $str_group_deny    = $orig_post['deny_gid'];
 234                 $str_contact_deny  = $orig_post['deny_cid'];
 235                 $location          = $orig_post['location'];
 236                 $coord             = $orig_post['coord'];
 237                 $verb              = $orig_post['verb'];
 238                 $objecttype        = $orig_post['object-type'];
 239                 $app               = $orig_post['app'];
 240                 $categories        = $orig_post['file'];
 241                 $title             = Strings::escapeTags(trim($_REQUEST['title']));
 242                 $body              = Strings::escapeHtml(trim($body));
 243                 $private           = $orig_post['private'];
 244                 $pubmail_enabled   = $orig_post['pubmail'];
 245                 $network           = $orig_post['network'];
 246                 $guid              = $orig_post['guid'];
 247                 $extid             = $orig_post['extid'];
 248
 249         } else {
 250
 251                 /*
 252                  * if coming from the API and no privacy settings are set,
 253                  * use the user default permissions - as they won't have
 254                  * been supplied via a form.
 255                  */
 256                 if ($api_source
 257                         && !array_key_exists('contact_allow', $_REQUEST)
 258                         && !array_key_exists('group_allow', $_REQUEST)
 259                         && !array_key_exists('contact_deny', $_REQUEST)
 260                         && !array_key_exists('group_deny', $_REQUEST)) {
 261                         $str_group_allow   = $user['allow_gid'];
 262                         $str_contact_allow = $user['allow_cid'];
 263                         $str_group_deny    = $user['deny_gid'];
 264                         $str_contact_deny  = $user['deny_cid'];
 265                 } else {
 266                         // use the posted permissions
 267                         $str_group_allow   = perms2str(defaults($_REQUEST, 'group_allow', ''));
 268                         $str_contact_allow = perms2str(defaults($_REQUEST, 'contact_allow', ''));
 269                         $str_group_deny    = perms2str(defaults($_REQUEST, 'group_deny', ''));
 270                         $str_contact_deny  = perms2str(defaults($_REQUEST, 'contact_deny', ''));
 271                 }
 272
 273                 $title             = Strings::escapeTags(trim(defaults($_REQUEST, 'title'   , '')));
 274                 $location          = Strings::escapeTags(trim(defaults($_REQUEST, 'location', '')));
 275                 $coord             = Strings::escapeTags(trim(defaults($_REQUEST, 'coord'   , '')));
 276                 $verb              = Strings::escapeTags(trim(defaults($_REQUEST, 'verb'    , '')));
 277                 $emailcc           = Strings::escapeTags(trim(defaults($_REQUEST, 'emailcc' , '')));
 278                 $body              = Strings::escapeHtml(trim($body));
 279                 $network           = Strings::escapeTags(trim(defaults($_REQUEST, 'network' , Protocol::DFRN)));
 280                 $guid              = System::createUUID();
 281
 282                 $postopts = defaults($_REQUEST, 'postopts', '');
 283
 284                 $private = ((strlen($str_group_allow) || strlen($str_contact_allow) || strlen($str_group_deny) || strlen($str_contact_deny)) ? 1 : 0);
 285
 286                 if ($user['hidewall']) {
 287                         $private = 2;
 288                 }
 289
 290                 // If this is a comment, set the permissions from the parent.
 291
 292                 if ($toplevel_item) {
 293                         // for non native networks use the network of the original post as network of the item
 294                         if (($toplevel_item['network'] != Protocol::DIASPORA)
 295                                 && ($toplevel_item['network'] != Protocol::OSTATUS)
 296                                 && ($network == "")) {
 297                                 $network = $toplevel_item['network'];
 298                         }
 299
 300                         $str_contact_allow = $toplevel_item['allow_cid'];
 301                         $str_group_allow   = $toplevel_item['allow_gid'];
 302                         $str_contact_deny  = $toplevel_item['deny_cid'];
 303                         $str_group_deny    = $toplevel_item['deny_gid'];
 304                         $private           = $toplevel_item['private'];
 305
 306                         $wall              = $toplevel_item['wall'];
 307                 }
 308
 309                 $pubmail_enabled = defaults($_REQUEST, 'pubmail_enable', false) && !$private;
 310
 311                 // if using the API, we won't see pubmail_enable - figure out if it should be set
 312                 if ($api_source && $profile_uid && $profile_uid == local_user() && !$private) {
 313                         if (function_exists('imap_open') && !Config::get('system', 'imap_disabled')) {
 314                                 $pubmail_enabled = DBA::exists('mailacct', ["`uid` = ? AND `server` != ? AND `pubmail`", local_user(), '']);
 315                         }
 316                 }
 317
 318                 if (!strlen($body)) {
 319                         if ($preview) {
 320                                 exit();
 321                         }
 322                         info(L10n::t('Empty post discarded.') . EOL);
 323                         if (!empty($_REQUEST['return'])) {
 324                                 $a->internalRedirect($return_path);
 325                         }
 326                         exit();
 327                 }
 328         }
 329
 330         if (!empty($categories)) {
 331                 // get the "fileas" tags for this post
 332                 $filedas = FileTag::fileToArray($categories);
 333         }
 334
 335         // save old and new categories, so we can determine what needs to be deleted from pconfig
 336         $categories_old = $categories;
 337         $categories = FileTag::listToFile(trim(defaults($_REQUEST, 'category', '')), 'category');
 338         $categories_new = $categories;
 339
 340         if (!empty($filedas) && is_array($filedas)) {
 341                 // append the fileas stuff to the new categories list
 342                 $categories .= FileTag::arrayToFile($filedas);
 343         }
 344
 345         // get contact info for poster
 346
 347         $author = null;
 348         $self   = false;
 349         $contact_id = 0;
 350
 351         if (local_user() && ((local_user() == $profile_uid) || $allow_comment)) {
 352                 $self = true;
 353                 $author = DBA::selectFirst('contact', [], ['uid' => local_user(), 'self' => true]);
 354         } elseif (remote_user()) {
 355                 if (!empty($_SESSION['remote']) && is_array($_SESSION['remote'])) {
 356                         foreach ($_SESSION['remote'] as $v) {
 357                                 if ($v['uid'] == $profile_uid) {
 358                                         $contact_id = $v['cid'];
 359                                         break;
 360                                 }
 361                         }
 362                 }
 363                 if ($contact_id) {
 364                         $author = DBA::selectFirst('contact', [], ['id' => $contact_id]);
 365                 }
 366         }
 367
 368         if (DBA::isResult($author)) {
 369                 $contact_id = $author['id'];
 370         }
 371
 372         // get contact info for owner
 373         if ($profile_uid == local_user() || $allow_comment) {
 374                 $contact_record = $author;
 375         } else {
 376                 $contact_record = DBA::selectFirst('contact', [], ['uid' => $profile_uid, 'self' => true]);
 377         }
 378
 379         // Look for any tags and linkify them
 380         $str_tags = '';
 381         $inform   = '';
 382
 383         $tags = BBCode::getTags($body);
 384
 385         if ($thread_parent_id && !\Friendica\Content\Feature::isEnabled($uid, 'explicit_mentions')) {
 386                 $tags = item_add_implicit_mentions($tags, $thread_parent_contact, $thread_parent_id);
 387         }
 388
 389         $tagged = [];
 390
 391         $private_forum = false;
 392         $only_to_forum = false;
 393         $forum_contact = [];
 394
 395         if (count($tags)) {
 396                 foreach ($tags as $tag) {
 397                         $tag_type = substr($tag, 0, 1);
 398
 399                         if ($tag_type == Term::TAG_CHARACTER[Term::HASHTAG]) {
 400                                 continue;
 401                         }
 402
 403                         /*
 404                          * If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
 405                          * Robert Johnson should be first in the $tags array
 406                          */
 407                         $fullnametagged = false;
 408                         /// @TODO $tagged is initialized above if () block and is not filled, maybe old-lost code?
 409                         foreach ($tagged as $nextTag) {
 410                                 if (stristr($nextTag, $tag . ' ')) {
 411                                         $fullnametagged = true;
 412                                         break;
 413                                 }
 414                         }
 415                         if ($fullnametagged) {
 416                                 continue;
 417                         }
 418
 419                         $success = handle_tag($body, $inform, $str_tags, local_user() ? local_user() : $profile_uid, $tag, $network);
 420                         if ($success['replaced']) {
 421                                 $tagged[] = $tag;
 422                         }
 423                         // When the forum is private or the forum is addressed with a "!" make the post private
 424                         if (is_array($success['contact']) && (!empty($success['contact']['prv']) || ($tag_type == Term::TAG_CHARACTER[Term::EXCLUSIVE_MENTION]))) {
 425                                 $private_forum = $success['contact']['prv'];
 426                                 $only_to_forum = ($tag_type == Term::TAG_CHARACTER[Term::EXCLUSIVE_MENTION]);
 427                                 $private_id = $success['contact']['id'];
 428                                 $forum_contact = $success['contact'];
 429                         } elseif (is_array($success['contact']) && !empty($success['contact']['forum']) &&
 430                                 ($str_contact_allow == '<' . $success['contact']['id'] . '>')) {
 431                                 $private_forum = false;
 432                                 $only_to_forum = true;
 433                                 $private_id = $success['contact']['id'];
 434                                 $forum_contact = $success['contact'];
 435                         }
 436                 }
 437         }
 438
 439         $original_contact_id = $contact_id;
 440
 441         if (!$toplevel_item_id && count($forum_contact) && ($private_forum || $only_to_forum)) {
 442                 // we tagged a forum in a top level post. Now we change the post
 443                 $private = $private_forum;
 444
 445                 $str_group_allow = '';
 446                 $str_contact_deny = '';
 447                 $str_group_deny = '';
 448                 if ($private_forum) {
 449                         $str_contact_allow = '<' . $private_id . '>';
 450                 } else {
 451                         $str_contact_allow = '';
 452                 }
 453                 $contact_id = $private_id;
 454                 $contact_record = $forum_contact;
 455                 $_REQUEST['origin'] = false;
 456                 $wall = 0;
 457         }
 458
 459         /*
 460          * When a photo was uploaded into the message using the (profile wall) ajax
 461          * uploader, The permissions are initially set to disallow anybody but the
 462          * owner from seeing it. This is because the permissions may not yet have been
 463          * set for the post. If it's private, the photo permissions should be set
 464          * appropriately. But we didn't know the final permissions on the post until
 465          * now. So now we'll look for links of uploaded messages that are in the
 466          * post and set them to the same permissions as the post itself.
 467          */
 468
 469         $match = null;
 470
 471         /// @todo these lines should be moved to Model/Photo
 472         if (!$preview && preg_match_all("/\[img([\=0-9x]*?)\](.*?)\[\/img\]/",$body,$match)) {
 473                 $images = $match[2];
 474                 if (count($images)) {
 475
 476                         $objecttype = ACTIVITY_OBJ_IMAGE;
 477
 478                         foreach ($images as $image) {
 479                                 if (!stristr($image, System::baseUrl() . '/photo/')) {
 480                                         continue;
 481                                 }
 482                                 $image_uri = substr($image,strrpos($image,'/') + 1);
 483                                 $image_uri = substr($image_uri,0, strpos($image_uri,'-'));
 484                                 if (!strlen($image_uri)) {
 485                                         continue;
 486                                 }
 487
 488                                 // Ensure to only modify photos that you own
 489                                 $srch = '<' . intval($original_contact_id) . '>';
 490
 491                                 $condition = [
 492                                         'allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
 493                                         'resource-id' => $image_uri, 'uid' => $profile_uid
 494                                 ];
 495                                 if (!Photo::exists($condition)) {
 496                                         continue;
 497                                 }
 498
 499                                 $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
 500                                                 'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
 501                                 $condition = ['resource-id' => $image_uri, 'uid' => $profile_uid];
 502                                 Photo::update($fields, $condition);
 503                         }
 504                 }
 505         }
 506
 507
 508         /*
 509          * Next link in any attachment references we find in the post.
 510          */
 511         $match = false;
 512
 513         /// @todo these lines should be moved to Model/Attach (Once it exists)
 514         if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
 515                 $attaches = $match[1];
 516                 if (count($attaches)) {
 517                         foreach ($attaches as $attach) {
 518                                 // Ensure to only modify attachments that you own
 519                                 $srch = '<' . intval($original_contact_id) . '>';
 520
 521                                 $condition = ['allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
 522                                                 'id' => $attach];
 523                                 if (!Attach::exists($condition)) {
 524                                         continue;
 525                                 }
 526
 527                                 $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
 528                                                 'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
 529                                 $condition = ['id' => $attach];
 530                                 Attach::update($fields, $condition);
 531                         }
 532                 }
 533         }
 534
 535         // embedded bookmark or attachment in post? set bookmark flag
 536
 537         $data = BBCode::getAttachmentData($body);
 538         if ((preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data["type"]))
 539                 && ($posttype != Item::PT_PERSONAL_NOTE)) {
 540                 $posttype = Item::PT_PAGE;
 541                 $objecttype = ACTIVITY_OBJ_BOOKMARK;
 542         }
 543
 544         $body = bb_translate_video($body);
 545
 546
 547         // Fold multi-line [code] sequences
 548         $body = preg_replace('/\[\/code\]\s*\[code\]/ism', "\n", $body);
 549
 550         $body = BBCode::scaleExternalImages($body, false);
 551
 552         // Setting the object type if not defined before
 553         if (!$objecttype) {
 554                 $objecttype = ACTIVITY_OBJ_NOTE; // Default value
 555                 $objectdata = BBCode::getAttachedData($body);
 556
 557                 if ($objectdata["type"] == "link") {
 558                         $objecttype = ACTIVITY_OBJ_BOOKMARK;
 559                 } elseif ($objectdata["type"] == "video") {
 560                         $objecttype = ACTIVITY_OBJ_VIDEO;
 561                 } elseif ($objectdata["type"] == "photo") {
 562                         $objecttype = ACTIVITY_OBJ_IMAGE;
 563                 }
 564
 565         }
 566
 567         $attachments = '';
 568         $match = false;
 569
 570         if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
 571                 foreach ($match[2] as $mtch) {
 572                         $fields = ['id', 'filename', 'filesize', 'filetype'];
 573                         $attachment = Attach::selectFirst($fields, ['id' => $mtch]);
 574                         if ($attachment !== false) {
 575                                 if (strlen($attachments)) {
 576                                         $attachments .= ',';
 577                                 }
 578                                 $attachments .= '[attach]href="' . System::baseUrl() . '/attach/' . $attachment['id'] .
 579                                                 '" length="' . $attachment['filesize'] . '" type="' . $attachment['filetype'] .
 580                                                 '" title="' . ($attachment['filename'] ? $attachment['filename'] : '') . '"[/attach]';
 581                         }
 582                         $body = str_replace($match[1],'',$body);
 583                 }
 584         }
 585
 586         if (!strlen($verb)) {
 587                 $verb = ACTIVITY_POST;
 588         }
 589
 590         if ($network == "") {
 591                 $network = Protocol::DFRN;
 592         }
 593
 594         $gravity = ($toplevel_item_id ? GRAVITY_COMMENT : GRAVITY_PARENT);
 595
 596         // even if the post arrived via API we are considering that it
 597         // originated on this site by default for determining relayability.
 598
 599         // Don't use "defaults" here. It would turn 0 to 1
 600         if (!isset($_REQUEST['origin'])) {
 601                 $origin = 1;
 602         } else {
 603                 $origin = $_REQUEST['origin'];
 604         }
 605
 606         $notify_type = ($toplevel_item_id ? 'comment-new' : 'wall-new');
 607
 608         $uri = ($message_id ? $message_id : Item::newURI($api_source ? $profile_uid : $uid, $guid));
 609
 610         // Fallback so that we alway have a parent uri
 611         if (!$thr_parent_uri || !$toplevel_item_id) {
 612                 $thr_parent_uri = $uri;
 613         }
 614
 615         $datarray = [];
 616         $datarray['uid']           = $profile_uid;
 617         $datarray['wall']          = $wall;
 618         $datarray['gravity']       = $gravity;
 619         $datarray['network']       = $network;
 620         $datarray['contact-id']    = $contact_id;
 621         $datarray['owner-name']    = $contact_record['name'];
 622         $datarray['owner-link']    = $contact_record['url'];
 623         $datarray['owner-avatar']  = $contact_record['thumb'];
 624         $datarray['owner-id']      = Contact::getIdForURL($datarray['owner-link']);
 625         $datarray['author-name']   = $author['name'];
 626         $datarray['author-link']   = $author['url'];
 627         $datarray['author-avatar'] = $author['thumb'];
 628         $datarray['author-id']     = Contact::getIdForURL($datarray['author-link']);
 629         $datarray['created']       = DateTimeFormat::utcNow();
 630         $datarray['edited']        = DateTimeFormat::utcNow();
 631         $datarray['commented']     = DateTimeFormat::utcNow();
 632         $datarray['received']      = DateTimeFormat::utcNow();
 633         $datarray['changed']       = DateTimeFormat::utcNow();
 634         $datarray['extid']         = $extid;
 635         $datarray['guid']          = $guid;
 636         $datarray['uri']           = $uri;
 637         $datarray['title']         = $title;
 638         $datarray['body']          = $body;
 639         $datarray['app']           = $app;
 640         $datarray['location']      = $location;
 641         $datarray['coord']         = $coord;
 642         $datarray['tag']           = $str_tags;
 643         $datarray['file']          = $categories;
 644         $datarray['inform']        = $inform;
 645         $datarray['verb']          = $verb;
 646         $datarray['post-type']     = $posttype;
 647         $datarray['object-type']   = $objecttype;
 648         $datarray['allow_cid']     = $str_contact_allow;
 649         $datarray['allow_gid']     = $str_group_allow;
 650         $datarray['deny_cid']      = $str_contact_deny;
 651         $datarray['deny_gid']      = $str_group_deny;
 652         $datarray['private']       = $private;
 653         $datarray['pubmail']       = $pubmail_enabled;
 654         $datarray['attach']        = $attachments;
 655
 656         // This is not a bug. The item store function changes 'parent-uri' to 'thr-parent' and fetches 'parent-uri' new. (We should change this)
 657         $datarray['parent-uri']    = $thr_parent_uri;
 658
 659         $datarray['postopts']      = $postopts;
 660         $datarray['origin']        = $origin;
 661         $datarray['moderated']     = false;
 662         $datarray['object']        = $object;
 663
 664         /*
 665          * These fields are for the convenience of addons...
 666          * 'self' if true indicates the owner is posting on their own wall
 667          * If parent is 0 it is a top-level post.
 668          */
 669         $datarray['parent']        = $toplevel_item_id;
 670         $datarray['self']          = $self;
 671
 672         // This triggers posts via API and the mirror functions
 673         $datarray['api_source'] = $api_source;
 674
 675         // This field is for storing the raw conversation data
 676         $datarray['protocol'] = Conversation::PARCEL_DFRN;
 677
 678         $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $datarray['parent-uri']]);
 679         if (DBA::isResult($conversation)) {
 680                 if ($conversation['conversation-uri'] != '') {
 681                         $datarray['conversation-uri'] = $conversation['conversation-uri'];
 682                 }
 683                 if ($conversation['conversation-href'] != '') {
 684                         $datarray['conversation-href'] = $conversation['conversation-href'];
 685                 }
 686         }
 687
 688         if ($orig_post) {
 689                 $datarray['edit'] = true;
 690         } else {
 691                 $datarray['edit'] = false;
 692         }
 693
 694         // Check for hashtags in the body and repair or add hashtag links
 695         if ($preview || $orig_post) {
 696                 Item::setHashtags($datarray);
 697         }
 698
 699         // preview mode - prepare the body for display and send it via json
 700         if ($preview) {
 701                 // We set the datarray ID to -1 because in preview mode the dataray
 702                 // doesn't have an ID.
 703                 $datarray["id"] = -1;
 704                 $datarray["item_id"] = -1;
 705                 $datarray["author-network"] = Protocol::DFRN;
 706
 707                 $o = conversation($a, [array_merge($contact_record, $datarray)], new Pager($a->query_string), 'search', false, true);
 708                 Logger::log('preview: ' . $o);
 709                 echo json_encode(['preview' => $o]);
 710                 exit();
 711         }
 712
 713         Hook::callAll('post_local',$datarray);
 714
 715         if (!empty($datarray['cancel'])) {
 716                 Logger::log('mod_item: post cancelled by addon.');
 717                 if ($return_path) {
 718                         $a->internalRedirect($return_path);
 719                 }
 720
 721                 $json = ['cancel' => 1];
 722                 if (!empty($_REQUEST['jsreload'])) {
 723                         $json['reload'] = System::baseUrl() . '/' . $_REQUEST['jsreload'];
 724                 }
 725
 726                 echo json_encode($json);
 727                 exit();
 728         }
 729
 730         if ($orig_post) {
 731                 // Fill the cache field
 732                 // This could be done in Item::update as well - but we have to check for the existance of some fields.
 733                 Item::putInCache($datarray);
 734
 735                 $fields = [
 736                         'title' => $datarray['title'],
 737                         'body' => $datarray['body'],
 738                         'tag' => $datarray['tag'],
 739                         'attach' => $datarray['attach'],
 740                         'file' => $datarray['file'],
 741                         'rendered-html' => $datarray['rendered-html'],
 742                         'rendered-hash' => $datarray['rendered-hash'],
 743                         'edited' => DateTimeFormat::utcNow(),
 744                         'changed' => DateTimeFormat::utcNow()];
 745
 746                 Item::update($fields, ['id' => $post_id]);
 747
 748                 // update filetags in pconfig
 749                 FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
 750
 751                 if (!empty($_REQUEST['return']) && strlen($return_path)) {
 752                         Logger::log('return: ' . $return_path);
 753                         $a->internalRedirect($return_path);
 754                 }
 755                 exit();
 756         }
 757
 758         unset($datarray['edit']);
 759         unset($datarray['self']);
 760         unset($datarray['api_source']);
 761
 762         if ($origin) {
 763                 $signed = Diaspora::createCommentSignature($uid, $datarray);
 764                 if (!empty($signed)) {
 765                         $datarray['diaspora_signed_text'] = json_encode($signed);
 766                 }
 767         }
 768
 769         $post_id = Item::insert($datarray);
 770
 771         if (!$post_id) {
 772                 Logger::log("Item wasn't stored.");
 773                 $a->internalRedirect($return_path);
 774         }
 775
 776         $datarray = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 777
 778         if (!DBA::isResult($datarray)) {
 779                 Logger::log("Item with id ".$post_id." couldn't be fetched.");
 780                 $a->internalRedirect($return_path);
 781         }
 782
 783         // update filetags in pconfig
 784         FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
 785
 786         // These notifications are sent if someone else is commenting other your wall
 787         if ($toplevel_item_id) {
 788                 if ($contact_record != $author) {
 789                         notification([
 790                                 'type'         => NOTIFY_COMMENT,
 791                                 'notify_flags' => $user['notify-flags'],
 792                                 'language'     => $user['language'],
 793                                 'to_name'      => $user['username'],
 794                                 'to_email'     => $user['email'],
 795                                 'uid'          => $user['uid'],
 796                                 'item'         => $datarray,
 797                                 'link'         => System::baseUrl().'/display/'.urlencode($datarray['guid']),
 798                                 'source_name'  => $datarray['author-name'],
 799                                 'source_link'  => $datarray['author-link'],
 800                                 'source_photo' => $datarray['author-avatar'],
 801                                 'verb'         => ACTIVITY_POST,
 802                                 'otype'        => 'item',
 803                                 'parent'       => $toplevel_item_id,
 804                                 'parent_uri'   => $toplevel_item['uri']
 805                         ]);
 806                 }
 807         } else {
 808                 if (($contact_record != $author) && !count($forum_contact)) {
 809                         notification([
 810                                 'type'         => NOTIFY_WALL,
 811                                 'notify_flags' => $user['notify-flags'],
 812                                 'language'     => $user['language'],
 813                                 'to_name'      => $user['username'],
 814                                 'to_email'     => $user['email'],
 815                                 'uid'          => $user['uid'],
 816                                 'item'         => $datarray,
 817                                 'link'         => System::baseUrl().'/display/'.urlencode($datarray['guid']),
 818                                 'source_name'  => $datarray['author-name'],
 819                                 'source_link'  => $datarray['author-link'],
 820                                 'source_photo' => $datarray['author-avatar'],
 821                                 'verb'         => ACTIVITY_POST,
 822                                 'otype'        => 'item'
 823                         ]);
 824                 }
 825         }
 826
 827         Hook::callAll('post_local_end', $datarray);
 828
 829         if (strlen($emailcc) && $profile_uid == local_user()) {
 830                 $erecips = explode(',', $emailcc);
 831                 if (count($erecips)) {
 832                         foreach ($erecips as $recip) {
 833                                 $addr = trim($recip);
 834                                 if (!strlen($addr)) {
 835                                         continue;
 836                                 }
 837                                 $disclaimer = '<hr />' . L10n::t('This message was sent to you by %s, a member of the Friendica social network.', $a->user['username'])
 838                                         . '<br />';
 839                                 $disclaimer .= L10n::t('You may visit them online at %s', System::baseUrl() . '/profile/' . $a->user['nickname']) . EOL;
 840                                 $disclaimer .= L10n::t('Please contact the sender by replying to this post if you do not wish to receive these messages.') . EOL;
 841                                 if (!$datarray['title']=='') {
 842                                         $subject = Email::encodeHeader($datarray['title'], 'UTF-8');
 843                                 } else {
 844                                         $subject = Email::encodeHeader('[Friendica]' . ' ' . L10n::t('%s posted an update.', $a->user['username']), 'UTF-8');
 845                                 }
 846                                 $link = '<a href="' . System::baseUrl() . '/profile/' . $a->user['nickname'] . '"><img src="' . $author['thumb'] . '" alt="' . $a->user['username'] . '" /></a><br /><br />';
 847                                 $html    = Item::prepareBody($datarray);
 848                                 $message = '<html><body>' . $link . $html . $disclaimer . '</body></html>';
 849                                 $params =  [
 850                                         'fromName' => $a->user['username'],
 851                                         'fromEmail' => $a->user['email'],
 852                                         'toEmail' => $addr,
 853                                         'replyTo' => $a->user['email'],
 854                                         'messageSubject' => $subject,
 855                                         'htmlVersion' => $message,
 856                                         'textVersion' => HTML::toPlaintext($html.$disclaimer)
 857                                 ];
 858                                 Emailer::send($params);
 859                         }
 860                 }
 861         }
 862
 863         // Insert an item entry for UID=0 for global entries.
 864         // We now do it in the background to save some time.
 865         // This is important in interactive environments like the frontend or the API.
 866         // We don't fork a new process since this is done anyway with the following command
 867         Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], "CreateShadowEntry", $post_id);
 868
 869         // When we are doing some forum posting via ! we have to start the notifier manually.
 870         // These kind of posts don't initiate the notifier call in the item class.
 871         if ($only_to_forum) {
 872                 Worker::add(PRIORITY_HIGH, "Notifier", $notify_type, $post_id);
 873         }
 874
 875         Logger::log('post_complete');
 876
 877         if ($api_source) {
 878                 return $post_id;
 879         }
 880
 881         item_post_return(System::baseUrl(), $api_source, $return_path);
 882         // NOTREACHED
 883 }
 884
 885 function item_post_return($baseurl, $api_source, $return_path)
 886 {
 887         // figure out how to return, depending on from whence we came
 888     $a = \get_app();
 889
 890         if ($api_source) {
 891                 return;
 892         }
 893
 894         if ($return_path) {
 895                 $a->internalRedirect($return_path);
 896         }
 897
 898         $json = ['success' => 1];
 899         if (!empty($_REQUEST['jsreload'])) {
 900                 $json['reload'] = $baseurl . '/' . $_REQUEST['jsreload'];
 901         }
 902
 903         Logger::log('post_json: ' . print_r($json, true), Logger::DEBUG);
 904
 905         echo json_encode($json);
 906         exit();
 907 }
 908
 909 function item_content(App $a)
 910 {
 911         if (!local_user() && !remote_user()) {
 912                 return;
 913         }
 914
 915         $o = '';
 916
 917         if (($a->argc >= 3) && ($a->argv[1] === 'drop') && intval($a->argv[2])) {
 918                 if ($a->isAjax()) {
 919                         $o = Item::deleteForUser(['id' => $a->argv[2]], local_user());
 920                 } else {
 921                         if (!empty($a->argv[3])) {
 922                                 $o = drop_item($a->argv[2], $a->argv[3]);
 923                         }
 924                         else {
 925                                 $o = drop_item($a->argv[2]);
 926                         }
 927                 }
 928
 929                 if ($a->isAjax()) {
 930                         // ajax return: [<item id>, 0 (no perm) | <owner id>]
 931                         echo json_encode([intval($a->argv[2]), intval($o)]);
 932                         exit();
 933                 }
 934         }
 935
 936         return $o;
 937 }
 938
 939 /**
 940  * This function removes the tag $tag from the text $body and replaces it with
 941  * the appropriate link.
 942  *
 943  * @param App     $a
 944  * @param string  $body     the text to replace the tag in
 945  * @param string  $inform   a comma-seperated string containing everybody to inform
 946  * @param string  $str_tags string to add the tag to
 947  * @param integer $profile_uid
 948  * @param string  $tag      the tag to replace
 949  * @param string  $network  The network of the post
 950  *
 951  * @return array|bool ['replaced' => $replaced, 'contact' => $contact];
 952  * @throws ImagickException
 953  * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 954  */
 955 function handle_tag(&$body, &$inform, &$str_tags, $profile_uid, $tag, $network = "")
 956 {
 957         $replaced = false;
 958         $r = null;
 959
 960         //is it a person tag?
 961         if (Term::isType($tag, Term::MENTION, Term::IMPLICIT_MENTION, Term::EXCLUSIVE_MENTION)) {
 962                 $tag_type = substr($tag, 0, 1);
 963                 //is it already replaced?
 964                 if (strpos($tag, '[url=')) {
 965                         //append tag to str_tags
 966                         if (!stristr($str_tags, $tag)) {
 967                                 if (strlen($str_tags)) {
 968                                         $str_tags .= ',';
 969                                 }
 970                                 $str_tags .= $tag;
 971                         }
 972
 973                         // Checking for the alias that is used for OStatus
 974                         $pattern = "/[@!]\[url\=(.*?)\](.*?)\[\/url\]/ism";
 975                         if (preg_match($pattern, $tag, $matches)) {
 976                                 $data = Contact::getDetailsByURL($matches[1]);
 977
 978                                 if ($data["alias"] != "") {
 979                                         $newtag = '@[url=' . $data["alias"] . ']' . $data["nick"] . '[/url]';
 980
 981                                         if (!stripos($str_tags, '[url=' . $data["alias"] . ']')) {
 982                                                 if (strlen($str_tags)) {
 983                                                         $str_tags .= ',';
 984                                                 }
 985
 986                                                 $str_tags .= $newtag;
 987                                         }
 988                                 }
 989                         }
 990
 991                         return $replaced;
 992                 }
 993
 994                 //get the person's name
 995                 $name = substr($tag, 1);
 996
 997                 // Sometimes the tag detection doesn't seem to work right
 998                 // This is some workaround
 999                 $nameparts = explode(" ", $name);
1000                 $name = $nameparts[0];
1001
1002                 // Try to detect the contact in various ways
1003                 if (strpos($name, 'http://')) {
1004                         // At first we have to ensure that the contact exists
1005                         Contact::getIdForURL($name);
1006
1007                         // Now we should have something
1008                         $contact = Contact::getDetailsByURL($name);
1009                 } elseif (strpos($name, '@')) {
1010                         // This function automatically probes when no entry was found
1011                         $contact = Contact::getDetailsByAddr($name);
1012                 } else {
1013                         $contact = false;
1014                         $fields = ['id', 'url', 'nick', 'name', 'alias', 'network', 'forum', 'prv'];
1015
1016                         if (strrpos($name, '+')) {
1017                                 // Is it in format @nick+number?
1018                                 $tagcid = intval(substr($name, strrpos($name, '+') + 1));
1019                                 $contact = DBA::selectFirst('contact', $fields, ['id' => $tagcid, 'uid' => $profile_uid]);
1020                         }
1021
1022                         // select someone by nick or attag in the current network
1023                         if (!DBA::isResult($contact) && ($network != "")) {
1024                                 $condition = ["(`nick` = ? OR `attag` = ?) AND `network` = ? AND `uid` = ?",
1025                                                 $name, $name, $network, $profile_uid];
1026                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1027                         }
1028
1029                         //select someone by name in the current network
1030                         if (!DBA::isResult($contact) && ($network != "")) {
1031                                 $condition = ['name' => $name, 'network' => $network, 'uid' => $profile_uid];
1032                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1033                         }
1034
1035                         // select someone by nick or attag in any network
1036                         if (!DBA::isResult($contact)) {
1037                                 $condition = ["(`nick` = ? OR `attag` = ?) AND `uid` = ?", $name, $name, $profile_uid];
1038                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1039                         }
1040
1041                         // select someone by name in any network
1042                         if (!DBA::isResult($contact)) {
1043                                 $condition = ['name' => $name, 'uid' => $profile_uid];
1044                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1045                         }
1046                 }
1047
1048                 // Check if $contact has been successfully loaded
1049                 if (DBA::isResult($contact)) {
1050                         if (strlen($inform) && (isset($contact["notify"]) || isset($contact["id"]))) {
1051                                 $inform .= ',';
1052                         }
1053
1054                         if (isset($contact["id"])) {
1055                                 $inform .= 'cid:' . $contact["id"];
1056                         } elseif (isset($contact["notify"])) {
1057                                 $inform  .= $contact["notify"];
1058                         }
1059
1060                         $profile = $contact["url"];
1061                         $alias   = $contact["alias"];
1062                         $newname = defaults($contact, "name", $contact["nick"]);
1063                 }
1064
1065                 //if there is an url for this persons profile
1066                 if (isset($profile) && ($newname != "")) {
1067                         $replaced = true;
1068                         // create profile link
1069                         $profile = str_replace(',', '%2c', $profile);
1070                         $newtag = $tag_type.'[url=' . $profile . ']' . $newname . '[/url]';
1071                         $body = str_replace($tag_type . $name, $newtag, $body);
1072                         // append tag to str_tags
1073                         if (!stristr($str_tags, $newtag)) {
1074                                 if (strlen($str_tags)) {
1075                                         $str_tags .= ',';
1076                                 }
1077                                 $str_tags .= $newtag;
1078                         }
1079
1080                         /*
1081                          * Status.Net seems to require the numeric ID URL in a mention if the person isn't
1082                          * subscribed to you. But the nickname URL is OK if they are. Grrr. We'll tag both.
1083                          */
1084                         if (!empty($alias)) {
1085                                 $newtag = '@[url=' . $alias . ']' . $newname . '[/url]';
1086                                 if (!stripos($str_tags, '[url=' . $alias . ']')) {
1087                                         if (strlen($str_tags)) {
1088                                                 $str_tags .= ',';
1089                                         }
1090                                         $str_tags .= $newtag;
1091                                 }
1092                         }
1093                 }
1094         }
1095
1096         return ['replaced' => $replaced, 'contact' => $contact];
1097 }
1098
1099 function item_add_implicit_mentions(array $tags, array $thread_parent_contact, $thread_parent_id)
1100 {
1101         if (Config::get('system', 'disable_implicit_mentions')) {
1102                 // Add a tag if the parent contact is from ActivityPub or OStatus (This will notify them)
1103                 if (in_array($thread_parent_contact['network'], [Protocol::OSTATUS, Protocol::ACTIVITYPUB])) {
1104                         $contact = Term::TAG_CHARACTER[Term::MENTION] . '[url=' . $thread_parent_contact['url'] . ']' . $thread_parent_contact['nick'] . '[/url]';
1105                         if (!stripos(implode($tags), '[url=' . $thread_parent_contact['url'] . ']')) {
1106                                 $tags[] = $contact;
1107                         }
1108                 }
1109         } else {
1110                 $implicit_mentions = [
1111                         $thread_parent_contact['url'] => $thread_parent_contact['nick']
1112                 ];
1113
1114                 $parent_terms = Term::tagArrayFromItemId($thread_parent_id, [Term::MENTION, Term::IMPLICIT_MENTION]);
1115
1116                 foreach ($parent_terms as $parent_term) {
1117                         $implicit_mentions[$parent_term['url']] = $parent_term['term'];
1118                 }
1119
1120                 foreach ($implicit_mentions as $url => $label) {
1121                         if ($url != \Friendica\Model\Profile::getMyURL() && !stripos(implode($tags), '[url=' . $url . ']')) {
1122                                 $tags[] = Term::TAG_CHARACTER[Term::IMPLICIT_MENTION] . '[url=' . $url . ']' . $label . '[/url]';
1123                         }
1124                 }
1125         }
1126
1127         return $tags;
1128 }