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 use Friendica\Worker\Delivery;
  44
  45 require_once 'include/items.php';
  46
  47 function item_post(App $a) {
  48         if (!local_user() && !remote_user()) {
  49                 return 0;
  50         }
  51
  52         $uid = local_user();
  53
  54         if (!empty($_REQUEST['dropitems'])) {
  55                 $arr_drop = explode(',', $_REQUEST['dropitems']);
  56                 drop_items($arr_drop);
  57                 $json = ['success' => 1];
  58                 echo json_encode($json);
  59                 exit();
  60         }
  61
  62         Hook::callAll('post_local_start', $_REQUEST);
  63
  64         Logger::log('postvars ' . print_r($_REQUEST, true), Logger::DATA);
  65
  66         $api_source = defaults($_REQUEST, 'api_source', false);
  67
  68         $message_id = ((!empty($_REQUEST['message_id']) && $api_source) ? strip_tags($_REQUEST['message_id']) : '');
  69
  70         $return_path = defaults($_REQUEST, 'return', '');
  71         $preview = intval(defaults($_REQUEST, 'preview', 0));
  72
  73         /*
  74          * Check for doubly-submitted posts, and reject duplicates
  75          * Note that we have to ignore previews, otherwise nothing will post
  76          * after it's been previewed
  77          */
  78         if (!$preview && !empty($_REQUEST['post_id_random'])) {
  79                 if (!empty($_SESSION['post-random']) && $_SESSION['post-random'] == $_REQUEST['post_id_random']) {
  80                         Logger::log("item post: duplicate post", Logger::DEBUG);
  81                         item_post_return(System::baseUrl(), $api_source, $return_path);
  82                 } else {
  83                         $_SESSION['post-random'] = $_REQUEST['post_id_random'];
  84                 }
  85         }
  86
  87         // Is this a reply to something?
  88         $toplevel_item_id = intval(defaults($_REQUEST, 'parent', 0));
  89         $thr_parent_uri = trim(defaults($_REQUEST, 'parent_uri', ''));
  90
  91         $thread_parent_id = 0;
  92         $thread_parent_contact = null;
  93
  94         $toplevel_item = null;
  95         $parent_user = null;
  96
  97         $parent_contact = null;
  98
  99         $objecttype = null;
 100         $profile_uid = defaults($_REQUEST, 'profile_uid', local_user());
 101         $posttype = defaults($_REQUEST, 'post_type', Item::PT_ARTICLE);
 102
 103         if ($toplevel_item_id || $thr_parent_uri) {
 104                 if ($toplevel_item_id) {
 105                         $toplevel_item = Item::selectFirst([], ['id' => $toplevel_item_id]);
 106                 } elseif ($thr_parent_uri) {
 107                         $toplevel_item = Item::selectFirst([], ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
 108                 }
 109
 110                 // if this isn't the top-level parent of the conversation, find it
 111                 if (DBA::isResult($toplevel_item)) {
 112                         // The URI and the contact is taken from the direct parent which needn't to be the top parent
 113                         $thread_parent_id = $toplevel_item['id'];
 114                         $thr_parent_uri = $toplevel_item['uri'];
 115                         $thread_parent_contact = Contact::getDetailsByURL($toplevel_item["author-link"]);
 116
 117                         if ($toplevel_item['id'] != $toplevel_item['parent']) {
 118                                 $toplevel_item = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $toplevel_item['parent']]);
 119                         }
 120                 }
 121
 122                 if (!DBA::isResult($toplevel_item)) {
 123                         notice(L10n::t('Unable to locate original post.') . EOL);
 124                         if (!empty($_REQUEST['return'])) {
 125                                 $a->internalRedirect($return_path);
 126                         }
 127                         exit();
 128                 }
 129
 130                 $toplevel_item_id = $toplevel_item['id'];
 131                 $parent_user = $toplevel_item['uid'];
 132
 133                 $objecttype = ACTIVITY_OBJ_COMMENT;
 134         }
 135
 136         if ($toplevel_item_id) {
 137                 Logger::info('mod_item: item_post parent=' . $toplevel_item_id);
 138         }
 139
 140         $post_id     = intval(defaults($_REQUEST, 'post_id', 0));
 141         $app         = strip_tags(defaults($_REQUEST, 'source', ''));
 142         $extid       = strip_tags(defaults($_REQUEST, 'extid', ''));
 143         $object      = defaults($_REQUEST, 'object', '');
 144
 145         // Don't use "defaults" here. It would turn 0 to 1
 146         if (!isset($_REQUEST['wall'])) {
 147                 $wall = 1;
 148         } else {
 149                 $wall = $_REQUEST['wall'];
 150         }
 151
 152         // Ensure that the user id in a thread always stay the same
 153         if (!is_null($parent_user) && in_array($parent_user, [local_user(), 0])) {
 154                 $profile_uid = $parent_user;
 155         }
 156
 157         // Check for multiple posts with the same message id (when the post was created via API)
 158         if (($message_id != '') && ($profile_uid != 0)) {
 159                 if (Item::exists(['uri' => $message_id, 'uid' => $profile_uid])) {
 160                         Logger::log("Message with URI ".$message_id." already exists for user ".$profile_uid, Logger::DEBUG);
 161                         return 0;
 162                 }
 163         }
 164
 165         // Allow commenting if it is an answer to a public post
 166         $allow_comment = local_user() && ($profile_uid == 0) && $toplevel_item_id && in_array($toplevel_item['network'], [Protocol::ACTIVITYPUB, Protocol::OSTATUS, Protocol::DIASPORA, Protocol::DFRN]);
 167
 168         // Now check that valid personal details have been provided
 169         if (!Security::canWriteToUserWall($profile_uid) && !$allow_comment) {
 170                 notice(L10n::t('Permission denied.') . EOL);
 171
 172                 if (!empty($_REQUEST['return'])) {
 173                         $a->internalRedirect($return_path);
 174                 }
 175
 176                 exit();
 177         }
 178
 179         // Init post instance
 180         $orig_post = null;
 181
 182         // is this an edited post?
 183         if ($post_id > 0) {
 184                 $orig_post = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 185         }
 186
 187         $user = DBA::selectFirst('user', [], ['uid' => $profile_uid]);
 188
 189         if (!DBA::isResult($user) && !$toplevel_item_id) {
 190                 return 0;
 191         }
 192
 193         $categories = '';
 194         $postopts = '';
 195         $emailcc = '';
 196         $body = defaults($_REQUEST, 'body', '');
 197         $has_attachment = defaults($_REQUEST, 'has_attachment', 0);
 198
 199         // If we have a speparate attachment, we need to add it to the body.
 200         if (!empty($has_attachment)) {
 201                 $attachment_type  = defaults($_REQUEST, 'attachment_type',  '');
 202                 $attachment_title = defaults($_REQUEST, 'attachment_title', '');
 203                 $attachment_text  = defaults($_REQUEST, 'attachment_text',  '');
 204
 205                 $attachment_url     = hex2bin(defaults($_REQUEST, 'attachment_url',     ''));
 206                 $attachment_img_src = hex2bin(defaults($_REQUEST, 'attachment_img_src', ''));
 207
 208                 $attachment_img_width  = defaults($_REQUEST, 'attachment_img_width',  0);
 209                 $attachment_img_height = defaults($_REQUEST, 'attachment_img_height', 0);
 210                 $attachment = [
 211                         'type'   => $attachment_type,
 212                         'title'  => $attachment_title,
 213                         'text'   => $attachment_text,
 214                         'url'    => $attachment_url,
 215                 ];
 216
 217                 if (!empty($attachment_img_src)) {
 218                         $attachment['images'] = [
 219                                 0 => [
 220                                         'src'    => $attachment_img_src,
 221                                         'width'  => $attachment_img_width,
 222                                         'height' => $attachment_img_height
 223                                 ]
 224                         ];
 225                 }
 226
 227                 $att_bbcode = add_page_info_data($attachment);
 228                 $body .= $att_bbcode;
 229         }
 230
 231         if (!empty($orig_post)) {
 232                 $str_group_allow   = $orig_post['allow_gid'];
 233                 $str_contact_allow = $orig_post['allow_cid'];
 234                 $str_group_deny    = $orig_post['deny_gid'];
 235                 $str_contact_deny  = $orig_post['deny_cid'];
 236                 $location          = $orig_post['location'];
 237                 $coord             = $orig_post['coord'];
 238                 $verb              = $orig_post['verb'];
 239                 $objecttype        = $orig_post['object-type'];
 240                 $app               = $orig_post['app'];
 241                 $categories        = $orig_post['file'];
 242                 $title             = Strings::escapeTags(trim($_REQUEST['title']));
 243                 $body              = Strings::escapeHtml(trim($body));
 244                 $private           = $orig_post['private'];
 245                 $pubmail_enabled   = $orig_post['pubmail'];
 246                 $network           = $orig_post['network'];
 247                 $guid              = $orig_post['guid'];
 248                 $extid             = $orig_post['extid'];
 249
 250         } else {
 251
 252                 /*
 253                  * if coming from the API and no privacy settings are set,
 254                  * use the user default permissions - as they won't have
 255                  * been supplied via a form.
 256                  */
 257                 if ($api_source
 258                         && !array_key_exists('contact_allow', $_REQUEST)
 259                         && !array_key_exists('group_allow', $_REQUEST)
 260                         && !array_key_exists('contact_deny', $_REQUEST)
 261                         && !array_key_exists('group_deny', $_REQUEST)) {
 262                         $str_group_allow   = $user['allow_gid'];
 263                         $str_contact_allow = $user['allow_cid'];
 264                         $str_group_deny    = $user['deny_gid'];
 265                         $str_contact_deny  = $user['deny_cid'];
 266                 } else {
 267                         // use the posted permissions
 268                         $str_group_allow   = perms2str(defaults($_REQUEST, 'group_allow', ''));
 269                         $str_contact_allow = perms2str(defaults($_REQUEST, 'contact_allow', ''));
 270                         $str_group_deny    = perms2str(defaults($_REQUEST, 'group_deny', ''));
 271                         $str_contact_deny  = perms2str(defaults($_REQUEST, 'contact_deny', ''));
 272                 }
 273
 274                 $title             = Strings::escapeTags(trim(defaults($_REQUEST, 'title'   , '')));
 275                 $location          = Strings::escapeTags(trim(defaults($_REQUEST, 'location', '')));
 276                 $coord             = Strings::escapeTags(trim(defaults($_REQUEST, 'coord'   , '')));
 277                 $verb              = Strings::escapeTags(trim(defaults($_REQUEST, 'verb'    , '')));
 278                 $emailcc           = Strings::escapeTags(trim(defaults($_REQUEST, 'emailcc' , '')));
 279                 $body              = Strings::escapeHtml(trim($body));
 280                 $network           = Strings::escapeTags(trim(defaults($_REQUEST, 'network' , Protocol::DFRN)));
 281                 $guid              = System::createUUID();
 282
 283                 $postopts = defaults($_REQUEST, 'postopts', '');
 284
 285                 $private = ((strlen($str_group_allow) || strlen($str_contact_allow) || strlen($str_group_deny) || strlen($str_contact_deny)) ? 1 : 0);
 286
 287                 if ($user['hidewall']) {
 288                         $private = 2;
 289                 }
 290
 291                 // If this is a comment, set the permissions from the parent.
 292
 293                 if ($toplevel_item) {
 294                         // for non native networks use the network of the original post as network of the item
 295                         if (($toplevel_item['network'] != Protocol::DIASPORA)
 296                                 && ($toplevel_item['network'] != Protocol::OSTATUS)
 297                                 && ($network == "")) {
 298                                 $network = $toplevel_item['network'];
 299                         }
 300
 301                         $str_contact_allow = $toplevel_item['allow_cid'];
 302                         $str_group_allow   = $toplevel_item['allow_gid'];
 303                         $str_contact_deny  = $toplevel_item['deny_cid'];
 304                         $str_group_deny    = $toplevel_item['deny_gid'];
 305                         $private           = $toplevel_item['private'];
 306
 307                         $wall              = $toplevel_item['wall'];
 308                 }
 309
 310                 $pubmail_enabled = defaults($_REQUEST, 'pubmail_enable', false) && !$private;
 311
 312                 // if using the API, we won't see pubmail_enable - figure out if it should be set
 313                 if ($api_source && $profile_uid && $profile_uid == local_user() && !$private) {
 314                         if (function_exists('imap_open') && !Config::get('system', 'imap_disabled')) {
 315                                 $pubmail_enabled = DBA::exists('mailacct', ["`uid` = ? AND `server` != ? AND `pubmail`", local_user(), '']);
 316                         }
 317                 }
 318
 319                 if (!strlen($body)) {
 320                         if ($preview) {
 321                                 exit();
 322                         }
 323                         info(L10n::t('Empty post discarded.') . EOL);
 324                         if (!empty($_REQUEST['return'])) {
 325                                 $a->internalRedirect($return_path);
 326                         }
 327                         exit();
 328                 }
 329         }
 330
 331         if (!empty($categories)) {
 332                 // get the "fileas" tags for this post
 333                 $filedas = FileTag::fileToArray($categories);
 334         }
 335
 336         // save old and new categories, so we can determine what needs to be deleted from pconfig
 337         $categories_old = $categories;
 338         $categories = FileTag::listToFile(trim(defaults($_REQUEST, 'category', '')), 'category');
 339         $categories_new = $categories;
 340
 341         if (!empty($filedas) && is_array($filedas)) {
 342                 // append the fileas stuff to the new categories list
 343                 $categories .= FileTag::arrayToFile($filedas);
 344         }
 345
 346         // get contact info for poster
 347
 348         $author = null;
 349         $self   = false;
 350         $contact_id = 0;
 351
 352         if (local_user() && ((local_user() == $profile_uid) || $allow_comment)) {
 353                 $self = true;
 354                 $author = DBA::selectFirst('contact', [], ['uid' => local_user(), 'self' => true]);
 355         } elseif (remote_user()) {
 356                 if (!empty($_SESSION['remote']) && is_array($_SESSION['remote'])) {
 357                         foreach ($_SESSION['remote'] as $v) {
 358                                 if ($v['uid'] == $profile_uid) {
 359                                         $contact_id = $v['cid'];
 360                                         break;
 361                                 }
 362                         }
 363                 }
 364                 if ($contact_id) {
 365                         $author = DBA::selectFirst('contact', [], ['id' => $contact_id]);
 366                 }
 367         }
 368
 369         if (DBA::isResult($author)) {
 370                 $contact_id = $author['id'];
 371         }
 372
 373         // get contact info for owner
 374         if ($profile_uid == local_user() || $allow_comment) {
 375                 $contact_record = $author;
 376         } else {
 377                 $contact_record = DBA::selectFirst('contact', [], ['uid' => $profile_uid, 'self' => true]);
 378         }
 379
 380         // Look for any tags and linkify them
 381         $str_tags = '';
 382         $inform   = '';
 383
 384         $tags = BBCode::getTags($body);
 385
 386         if ($thread_parent_id && !\Friendica\Content\Feature::isEnabled($uid, 'explicit_mentions')) {
 387                 $tags = item_add_implicit_mentions($tags, $thread_parent_contact, $thread_parent_id);
 388         }
 389
 390         $tagged = [];
 391
 392         $private_forum = false;
 393         $only_to_forum = false;
 394         $forum_contact = [];
 395
 396         if (count($tags)) {
 397                 foreach ($tags as $tag) {
 398                         $tag_type = substr($tag, 0, 1);
 399
 400                         if ($tag_type == Term::TAG_CHARACTER[Term::HASHTAG]) {
 401                                 continue;
 402                         }
 403
 404                         /*
 405                          * If we already tagged 'Robert Johnson', don't try and tag 'Robert'.
 406                          * Robert Johnson should be first in the $tags array
 407                          */
 408                         $fullnametagged = false;
 409                         /// @TODO $tagged is initialized above if () block and is not filled, maybe old-lost code?
 410                         foreach ($tagged as $nextTag) {
 411                                 if (stristr($nextTag, $tag . ' ')) {
 412                                         $fullnametagged = true;
 413                                         break;
 414                                 }
 415                         }
 416                         if ($fullnametagged) {
 417                                 continue;
 418                         }
 419
 420                         $success = handle_tag($body, $inform, $str_tags, local_user() ? local_user() : $profile_uid, $tag, $network);
 421                         if ($success['replaced']) {
 422                                 $tagged[] = $tag;
 423                         }
 424                         // When the forum is private or the forum is addressed with a "!" make the post private
 425                         if (is_array($success['contact']) && (!empty($success['contact']['prv']) || ($tag_type == Term::TAG_CHARACTER[Term::EXCLUSIVE_MENTION]))) {
 426                                 $private_forum = $success['contact']['prv'];
 427                                 $only_to_forum = ($tag_type == Term::TAG_CHARACTER[Term::EXCLUSIVE_MENTION]);
 428                                 $private_id = $success['contact']['id'];
 429                                 $forum_contact = $success['contact'];
 430                         } elseif (is_array($success['contact']) && !empty($success['contact']['forum']) &&
 431                                 ($str_contact_allow == '<' . $success['contact']['id'] . '>')) {
 432                                 $private_forum = false;
 433                                 $only_to_forum = true;
 434                                 $private_id = $success['contact']['id'];
 435                                 $forum_contact = $success['contact'];
 436                         }
 437                 }
 438         }
 439
 440         $original_contact_id = $contact_id;
 441
 442         if (!$toplevel_item_id && count($forum_contact) && ($private_forum || $only_to_forum)) {
 443                 // we tagged a forum in a top level post. Now we change the post
 444                 $private = $private_forum;
 445
 446                 $str_group_allow = '';
 447                 $str_contact_deny = '';
 448                 $str_group_deny = '';
 449                 if ($private_forum) {
 450                         $str_contact_allow = '<' . $private_id . '>';
 451                 } else {
 452                         $str_contact_allow = '';
 453                 }
 454                 $contact_id = $private_id;
 455                 $contact_record = $forum_contact;
 456                 $_REQUEST['origin'] = false;
 457                 $wall = 0;
 458         }
 459
 460         /*
 461          * When a photo was uploaded into the message using the (profile wall) ajax
 462          * uploader, The permissions are initially set to disallow anybody but the
 463          * owner from seeing it. This is because the permissions may not yet have been
 464          * set for the post. If it's private, the photo permissions should be set
 465          * appropriately. But we didn't know the final permissions on the post until
 466          * now. So now we'll look for links of uploaded messages that are in the
 467          * post and set them to the same permissions as the post itself.
 468          */
 469
 470         $match = null;
 471
 472         /// @todo these lines should be moved to Model/Photo
 473         if (!$preview && preg_match_all("/\[img([\=0-9x]*?)\](.*?)\[\/img\]/",$body,$match)) {
 474                 $images = $match[2];
 475                 if (count($images)) {
 476
 477                         $objecttype = ACTIVITY_OBJ_IMAGE;
 478
 479                         foreach ($images as $image) {
 480                                 if (!stristr($image, System::baseUrl() . '/photo/')) {
 481                                         continue;
 482                                 }
 483                                 $image_uri = substr($image,strrpos($image,'/') + 1);
 484                                 $image_uri = substr($image_uri,0, strpos($image_uri,'-'));
 485                                 if (!strlen($image_uri)) {
 486                                         continue;
 487                                 }
 488
 489                                 // Ensure to only modify photos that you own
 490                                 $srch = '<' . intval($original_contact_id) . '>';
 491
 492                                 $condition = [
 493                                         'allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
 494                                         'resource-id' => $image_uri, 'uid' => $profile_uid
 495                                 ];
 496                                 if (!Photo::exists($condition)) {
 497                                         continue;
 498                                 }
 499
 500                                 $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
 501                                                 'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
 502                                 $condition = ['resource-id' => $image_uri, 'uid' => $profile_uid];
 503                                 Photo::update($fields, $condition);
 504                         }
 505                 }
 506         }
 507
 508
 509         /*
 510          * Next link in any attachment references we find in the post.
 511          */
 512         $match = false;
 513
 514         /// @todo these lines should be moved to Model/Attach (Once it exists)
 515         if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
 516                 $attaches = $match[1];
 517                 if (count($attaches)) {
 518                         foreach ($attaches as $attach) {
 519                                 // Ensure to only modify attachments that you own
 520                                 $srch = '<' . intval($original_contact_id) . '>';
 521
 522                                 $condition = ['allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
 523                                                 'id' => $attach];
 524                                 if (!Attach::exists($condition)) {
 525                                         continue;
 526                                 }
 527
 528                                 $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
 529                                                 'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
 530                                 $condition = ['id' => $attach];
 531                                 Attach::update($fields, $condition);
 532                         }
 533                 }
 534         }
 535
 536         // embedded bookmark or attachment in post? set bookmark flag
 537
 538         $data = BBCode::getAttachmentData($body);
 539         if ((preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data["type"]))
 540                 && ($posttype != Item::PT_PERSONAL_NOTE)) {
 541                 $posttype = Item::PT_PAGE;
 542                 $objecttype = ACTIVITY_OBJ_BOOKMARK;
 543         }
 544
 545         $body = bb_translate_video($body);
 546
 547
 548         // Fold multi-line [code] sequences
 549         $body = preg_replace('/\[\/code\]\s*\[code\]/ism', "\n", $body);
 550
 551         $body = BBCode::scaleExternalImages($body, false);
 552
 553         // Setting the object type if not defined before
 554         if (!$objecttype) {
 555                 $objecttype = ACTIVITY_OBJ_NOTE; // Default value
 556                 $objectdata = BBCode::getAttachedData($body);
 557
 558                 if ($objectdata["type"] == "link") {
 559                         $objecttype = ACTIVITY_OBJ_BOOKMARK;
 560                 } elseif ($objectdata["type"] == "video") {
 561                         $objecttype = ACTIVITY_OBJ_VIDEO;
 562                 } elseif ($objectdata["type"] == "photo") {
 563                         $objecttype = ACTIVITY_OBJ_IMAGE;
 564                 }
 565
 566         }
 567
 568         $attachments = '';
 569         $match = false;
 570
 571         if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
 572                 foreach ($match[2] as $mtch) {
 573                         $fields = ['id', 'filename', 'filesize', 'filetype'];
 574                         $attachment = Attach::selectFirst($fields, ['id' => $mtch]);
 575                         if ($attachment !== false) {
 576                                 if (strlen($attachments)) {
 577                                         $attachments .= ',';
 578                                 }
 579                                 $attachments .= '[attach]href="' . System::baseUrl() . '/attach/' . $attachment['id'] .
 580                                                 '" length="' . $attachment['filesize'] . '" type="' . $attachment['filetype'] .
 581                                                 '" title="' . ($attachment['filename'] ? $attachment['filename'] : '') . '"[/attach]';
 582                         }
 583                         $body = str_replace($match[1],'',$body);
 584                 }
 585         }
 586
 587         if (!strlen($verb)) {
 588                 $verb = ACTIVITY_POST;
 589         }
 590
 591         if ($network == "") {
 592                 $network = Protocol::DFRN;
 593         }
 594
 595         $gravity = ($toplevel_item_id ? GRAVITY_COMMENT : GRAVITY_PARENT);
 596
 597         // even if the post arrived via API we are considering that it
 598         // originated on this site by default for determining relayability.
 599
 600         // Don't use "defaults" here. It would turn 0 to 1
 601         if (!isset($_REQUEST['origin'])) {
 602                 $origin = 1;
 603         } else {
 604                 $origin = $_REQUEST['origin'];
 605         }
 606
 607         $notify_type = ($toplevel_item_id ? Delivery::COMMENT : Delivery::POST);
 608
 609         $uri = ($message_id ? $message_id : Item::newURI($api_source ? $profile_uid : $uid, $guid));
 610
 611         // Fallback so that we alway have a parent uri
 612         if (!$thr_parent_uri || !$toplevel_item_id) {
 613                 $thr_parent_uri = $uri;
 614         }
 615
 616         $datarray = [];
 617         $datarray['uid']           = $profile_uid;
 618         $datarray['wall']          = $wall;
 619         $datarray['gravity']       = $gravity;
 620         $datarray['network']       = $network;
 621         $datarray['contact-id']    = $contact_id;
 622         $datarray['owner-name']    = $contact_record['name'];
 623         $datarray['owner-link']    = $contact_record['url'];
 624         $datarray['owner-avatar']  = $contact_record['thumb'];
 625         $datarray['owner-id']      = Contact::getIdForURL($datarray['owner-link']);
 626         $datarray['author-name']   = $author['name'];
 627         $datarray['author-link']   = $author['url'];
 628         $datarray['author-avatar'] = $author['thumb'];
 629         $datarray['author-id']     = Contact::getIdForURL($datarray['author-link']);
 630         $datarray['created']       = DateTimeFormat::utcNow();
 631         $datarray['edited']        = DateTimeFormat::utcNow();
 632         $datarray['commented']     = DateTimeFormat::utcNow();
 633         $datarray['received']      = DateTimeFormat::utcNow();
 634         $datarray['changed']       = DateTimeFormat::utcNow();
 635         $datarray['extid']         = $extid;
 636         $datarray['guid']          = $guid;
 637         $datarray['uri']           = $uri;
 638         $datarray['title']         = $title;
 639         $datarray['body']          = $body;
 640         $datarray['app']           = $app;
 641         $datarray['location']      = $location;
 642         $datarray['coord']         = $coord;
 643         $datarray['tag']           = $str_tags;
 644         $datarray['file']          = $categories;
 645         $datarray['inform']        = $inform;
 646         $datarray['verb']          = $verb;
 647         $datarray['post-type']     = $posttype;
 648         $datarray['object-type']   = $objecttype;
 649         $datarray['allow_cid']     = $str_contact_allow;
 650         $datarray['allow_gid']     = $str_group_allow;
 651         $datarray['deny_cid']      = $str_contact_deny;
 652         $datarray['deny_gid']      = $str_group_deny;
 653         $datarray['private']       = $private;
 654         $datarray['pubmail']       = $pubmail_enabled;
 655         $datarray['attach']        = $attachments;
 656
 657         // This is not a bug. The item store function changes 'parent-uri' to 'thr-parent' and fetches 'parent-uri' new. (We should change this)
 658         $datarray['parent-uri']    = $thr_parent_uri;
 659
 660         $datarray['postopts']      = $postopts;
 661         $datarray['origin']        = $origin;
 662         $datarray['moderated']     = false;
 663         $datarray['object']        = $object;
 664
 665         /*
 666          * These fields are for the convenience of addons...
 667          * 'self' if true indicates the owner is posting on their own wall
 668          * If parent is 0 it is a top-level post.
 669          */
 670         $datarray['parent']        = $toplevel_item_id;
 671         $datarray['self']          = $self;
 672
 673         // This triggers posts via API and the mirror functions
 674         $datarray['api_source'] = $api_source;
 675
 676         // This field is for storing the raw conversation data
 677         $datarray['protocol'] = Conversation::PARCEL_DFRN;
 678
 679         $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $datarray['parent-uri']]);
 680         if (DBA::isResult($conversation)) {
 681                 if ($conversation['conversation-uri'] != '') {
 682                         $datarray['conversation-uri'] = $conversation['conversation-uri'];
 683                 }
 684                 if ($conversation['conversation-href'] != '') {
 685                         $datarray['conversation-href'] = $conversation['conversation-href'];
 686                 }
 687         }
 688
 689         if ($orig_post) {
 690                 $datarray['edit'] = true;
 691         } else {
 692                 $datarray['edit'] = false;
 693         }
 694
 695         // Check for hashtags in the body and repair or add hashtag links
 696         if ($preview || $orig_post) {
 697                 Item::setHashtags($datarray);
 698         }
 699
 700         // preview mode - prepare the body for display and send it via json
 701         if ($preview) {
 702                 // We set the datarray ID to -1 because in preview mode the dataray
 703                 // doesn't have an ID.
 704                 $datarray["id"] = -1;
 705                 $datarray["item_id"] = -1;
 706                 $datarray["author-network"] = Protocol::DFRN;
 707
 708                 $o = conversation($a, [array_merge($contact_record, $datarray)], new Pager($a->query_string), 'search', false, true);
 709                 Logger::log('preview: ' . $o);
 710                 echo json_encode(['preview' => $o]);
 711                 exit();
 712         }
 713
 714         Hook::callAll('post_local',$datarray);
 715
 716         if (!empty($datarray['cancel'])) {
 717                 Logger::log('mod_item: post cancelled by addon.');
 718                 if ($return_path) {
 719                         $a->internalRedirect($return_path);
 720                 }
 721
 722                 $json = ['cancel' => 1];
 723                 if (!empty($_REQUEST['jsreload'])) {
 724                         $json['reload'] = System::baseUrl() . '/' . $_REQUEST['jsreload'];
 725                 }
 726
 727                 echo json_encode($json);
 728                 exit();
 729         }
 730
 731         if ($orig_post) {
 732                 // Fill the cache field
 733                 // This could be done in Item::update as well - but we have to check for the existance of some fields.
 734                 Item::putInCache($datarray);
 735
 736                 $fields = [
 737                         'title' => $datarray['title'],
 738                         'body' => $datarray['body'],
 739                         'tag' => $datarray['tag'],
 740                         'attach' => $datarray['attach'],
 741                         'file' => $datarray['file'],
 742                         'rendered-html' => $datarray['rendered-html'],
 743                         'rendered-hash' => $datarray['rendered-hash'],
 744                         'edited' => DateTimeFormat::utcNow(),
 745                         'changed' => DateTimeFormat::utcNow()];
 746
 747                 Item::update($fields, ['id' => $post_id]);
 748
 749                 // update filetags in pconfig
 750                 FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
 751
 752                 if (!empty($_REQUEST['return']) && strlen($return_path)) {
 753                         Logger::log('return: ' . $return_path);
 754                         $a->internalRedirect($return_path);
 755                 }
 756                 exit();
 757         }
 758
 759         unset($datarray['edit']);
 760         unset($datarray['self']);
 761         unset($datarray['api_source']);
 762
 763         if ($origin) {
 764                 $signed = Diaspora::createCommentSignature($uid, $datarray);
 765                 if (!empty($signed)) {
 766                         $datarray['diaspora_signed_text'] = json_encode($signed);
 767                 }
 768         }
 769
 770         $post_id = Item::insert($datarray);
 771
 772         if (!$post_id) {
 773                 Logger::log("Item wasn't stored.");
 774                 $a->internalRedirect($return_path);
 775         }
 776
 777         $datarray = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 778
 779         if (!DBA::isResult($datarray)) {
 780                 Logger::log("Item with id ".$post_id." couldn't be fetched.");
 781                 $a->internalRedirect($return_path);
 782         }
 783
 784         // update filetags in pconfig
 785         FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
 786
 787         // These notifications are sent if someone else is commenting other your wall
 788         if ($toplevel_item_id) {
 789                 if ($contact_record != $author) {
 790                         notification([
 791                                 'type'         => NOTIFY_COMMENT,
 792                                 'notify_flags' => $user['notify-flags'],
 793                                 'language'     => $user['language'],
 794                                 'to_name'      => $user['username'],
 795                                 'to_email'     => $user['email'],
 796                                 'uid'          => $user['uid'],
 797                                 'item'         => $datarray,
 798                                 'link'         => System::baseUrl().'/display/'.urlencode($datarray['guid']),
 799                                 'source_name'  => $datarray['author-name'],
 800                                 'source_link'  => $datarray['author-link'],
 801                                 'source_photo' => $datarray['author-avatar'],
 802                                 'verb'         => ACTIVITY_POST,
 803                                 'otype'        => 'item',
 804                                 'parent'       => $toplevel_item_id,
 805                                 'parent_uri'   => $toplevel_item['uri']
 806                         ]);
 807                 }
 808         } else {
 809                 if (($contact_record != $author) && !count($forum_contact)) {
 810                         notification([
 811                                 'type'         => NOTIFY_WALL,
 812                                 'notify_flags' => $user['notify-flags'],
 813                                 'language'     => $user['language'],
 814                                 'to_name'      => $user['username'],
 815                                 'to_email'     => $user['email'],
 816                                 'uid'          => $user['uid'],
 817                                 'item'         => $datarray,
 818                                 'link'         => System::baseUrl().'/display/'.urlencode($datarray['guid']),
 819                                 'source_name'  => $datarray['author-name'],
 820                                 'source_link'  => $datarray['author-link'],
 821                                 'source_photo' => $datarray['author-avatar'],
 822                                 'verb'         => ACTIVITY_POST,
 823                                 'otype'        => 'item'
 824                         ]);
 825                 }
 826         }
 827
 828         Hook::callAll('post_local_end', $datarray);
 829
 830         if (strlen($emailcc) && $profile_uid == local_user()) {
 831                 $erecips = explode(',', $emailcc);
 832                 if (count($erecips)) {
 833                         foreach ($erecips as $recip) {
 834                                 $addr = trim($recip);
 835                                 if (!strlen($addr)) {
 836                                         continue;
 837                                 }
 838                                 $disclaimer = '<hr />' . L10n::t('This message was sent to you by %s, a member of the Friendica social network.', $a->user['username'])
 839                                         . '<br />';
 840                                 $disclaimer .= L10n::t('You may visit them online at %s', System::baseUrl() . '/profile/' . $a->user['nickname']) . EOL;
 841                                 $disclaimer .= L10n::t('Please contact the sender by replying to this post if you do not wish to receive these messages.') . EOL;
 842                                 if (!$datarray['title']=='') {
 843                                         $subject = Email::encodeHeader($datarray['title'], 'UTF-8');
 844                                 } else {
 845                                         $subject = Email::encodeHeader('[Friendica]' . ' ' . L10n::t('%s posted an update.', $a->user['username']), 'UTF-8');
 846                                 }
 847                                 $link = '<a href="' . System::baseUrl() . '/profile/' . $a->user['nickname'] . '"><img src="' . $author['thumb'] . '" alt="' . $a->user['username'] . '" /></a><br /><br />';
 848                                 $html    = Item::prepareBody($datarray);
 849                                 $message = '<html><body>' . $link . $html . $disclaimer . '</body></html>';
 850                                 $params =  [
 851                                         'fromName' => $a->user['username'],
 852                                         'fromEmail' => $a->user['email'],
 853                                         'toEmail' => $addr,
 854                                         'replyTo' => $a->user['email'],
 855                                         'messageSubject' => $subject,
 856                                         'htmlVersion' => $message,
 857                                         'textVersion' => HTML::toPlaintext($html.$disclaimer)
 858                                 ];
 859                                 Emailer::send($params);
 860                         }
 861                 }
 862         }
 863
 864         // Insert an item entry for UID=0 for global entries.
 865         // We now do it in the background to save some time.
 866         // This is important in interactive environments like the frontend or the API.
 867         // We don't fork a new process since this is done anyway with the following command
 868         Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], "CreateShadowEntry", $post_id);
 869
 870         // When we are doing some forum posting via ! we have to start the notifier manually.
 871         // These kind of posts don't initiate the notifier call in the item class.
 872         if ($only_to_forum) {
 873                 Worker::add(PRIORITY_HIGH, "Notifier", $notify_type, $post_id);
 874         }
 875
 876         Logger::log('post_complete');
 877
 878         if ($api_source) {
 879                 return $post_id;
 880         }
 881
 882         item_post_return(System::baseUrl(), $api_source, $return_path);
 883         // NOTREACHED
 884 }
 885
 886 function item_post_return($baseurl, $api_source, $return_path)
 887 {
 888         // figure out how to return, depending on from whence we came
 889     $a = \get_app();
 890
 891         if ($api_source) {
 892                 return;
 893         }
 894
 895         if ($return_path) {
 896                 $a->internalRedirect($return_path);
 897         }
 898
 899         $json = ['success' => 1];
 900         if (!empty($_REQUEST['jsreload'])) {
 901                 $json['reload'] = $baseurl . '/' . $_REQUEST['jsreload'];
 902         }
 903
 904         Logger::log('post_json: ' . print_r($json, true), Logger::DEBUG);
 905
 906         echo json_encode($json);
 907         exit();
 908 }
 909
 910 function item_content(App $a)
 911 {
 912         if (!local_user() && !remote_user()) {
 913                 return;
 914         }
 915
 916         $o = '';
 917
 918         if (($a->argc >= 3) && ($a->argv[1] === 'drop') && intval($a->argv[2])) {
 919                 if ($a->isAjax()) {
 920                         $o = Item::deleteForUser(['id' => $a->argv[2]], local_user());
 921                 } else {
 922                         if (!empty($a->argv[3])) {
 923                                 $o = drop_item($a->argv[2], $a->argv[3]);
 924                         }
 925                         else {
 926                                 $o = drop_item($a->argv[2]);
 927                         }
 928                 }
 929
 930                 if ($a->isAjax()) {
 931                         // ajax return: [<item id>, 0 (no perm) | <owner id>]
 932                         echo json_encode([intval($a->argv[2]), intval($o)]);
 933                         exit();
 934                 }
 935         }
 936
 937         return $o;
 938 }
 939
 940 /**
 941  * This function removes the tag $tag from the text $body and replaces it with
 942  * the appropriate link.
 943  *
 944  * @param App     $a
 945  * @param string  $body     the text to replace the tag in
 946  * @param string  $inform   a comma-seperated string containing everybody to inform
 947  * @param string  $str_tags string to add the tag to
 948  * @param integer $profile_uid
 949  * @param string  $tag      the tag to replace
 950  * @param string  $network  The network of the post
 951  *
 952  * @return array|bool ['replaced' => $replaced, 'contact' => $contact];
 953  * @throws ImagickException
 954  * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 955  */
 956 function handle_tag(&$body, &$inform, &$str_tags, $profile_uid, $tag, $network = "")
 957 {
 958         $replaced = false;
 959         $r = null;
 960
 961         //is it a person tag?
 962         if (Term::isType($tag, Term::MENTION, Term::IMPLICIT_MENTION, Term::EXCLUSIVE_MENTION)) {
 963                 $tag_type = substr($tag, 0, 1);
 964                 //is it already replaced?
 965                 if (strpos($tag, '[url=')) {
 966                         //append tag to str_tags
 967                         if (!stristr($str_tags, $tag)) {
 968                                 if (strlen($str_tags)) {
 969                                         $str_tags .= ',';
 970                                 }
 971                                 $str_tags .= $tag;
 972                         }
 973
 974                         // Checking for the alias that is used for OStatus
 975                         $pattern = "/[@!]\[url\=(.*?)\](.*?)\[\/url\]/ism";
 976                         if (preg_match($pattern, $tag, $matches)) {
 977                                 $data = Contact::getDetailsByURL($matches[1]);
 978
 979                                 if ($data["alias"] != "") {
 980                                         $newtag = '@[url=' . $data["alias"] . ']' . $data["nick"] . '[/url]';
 981
 982                                         if (!stripos($str_tags, '[url=' . $data["alias"] . ']')) {
 983                                                 if (strlen($str_tags)) {
 984                                                         $str_tags .= ',';
 985                                                 }
 986
 987                                                 $str_tags .= $newtag;
 988                                         }
 989                                 }
 990                         }
 991
 992                         return $replaced;
 993                 }
 994
 995                 //get the person's name
 996                 $name = substr($tag, 1);
 997
 998                 // Sometimes the tag detection doesn't seem to work right
 999                 // This is some workaround
1000                 $nameparts = explode(" ", $name);
1001                 $name = $nameparts[0];
1002
1003                 // Try to detect the contact in various ways
1004                 if (strpos($name, 'http://')) {
1005                         // At first we have to ensure that the contact exists
1006                         Contact::getIdForURL($name);
1007
1008                         // Now we should have something
1009                         $contact = Contact::getDetailsByURL($name);
1010                 } elseif (strpos($name, '@')) {
1011                         // This function automatically probes when no entry was found
1012                         $contact = Contact::getDetailsByAddr($name);
1013                 } else {
1014                         $contact = false;
1015                         $fields = ['id', 'url', 'nick', 'name', 'alias', 'network', 'forum', 'prv'];
1016
1017                         if (strrpos($name, '+')) {
1018                                 // Is it in format @nick+number?
1019                                 $tagcid = intval(substr($name, strrpos($name, '+') + 1));
1020                                 $contact = DBA::selectFirst('contact', $fields, ['id' => $tagcid, 'uid' => $profile_uid]);
1021                         }
1022
1023                         // select someone by nick or attag in the current network
1024                         if (!DBA::isResult($contact) && ($network != "")) {
1025                                 $condition = ["(`nick` = ? OR `attag` = ?) AND `network` = ? AND `uid` = ?",
1026                                                 $name, $name, $network, $profile_uid];
1027                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1028                         }
1029
1030                         //select someone by name in the current network
1031                         if (!DBA::isResult($contact) && ($network != "")) {
1032                                 $condition = ['name' => $name, 'network' => $network, 'uid' => $profile_uid];
1033                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1034                         }
1035
1036                         // select someone by nick or attag in any network
1037                         if (!DBA::isResult($contact)) {
1038                                 $condition = ["(`nick` = ? OR `attag` = ?) AND `uid` = ?", $name, $name, $profile_uid];
1039                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1040                         }
1041
1042                         // select someone by name in any network
1043                         if (!DBA::isResult($contact)) {
1044                                 $condition = ['name' => $name, 'uid' => $profile_uid];
1045                                 $contact = DBA::selectFirst('contact', $fields, $condition);
1046                         }
1047                 }
1048
1049                 // Check if $contact has been successfully loaded
1050                 if (DBA::isResult($contact)) {
1051                         if (strlen($inform) && (isset($contact["notify"]) || isset($contact["id"]))) {
1052                                 $inform .= ',';
1053                         }
1054
1055                         if (isset($contact["id"])) {
1056                                 $inform .= 'cid:' . $contact["id"];
1057                         } elseif (isset($contact["notify"])) {
1058                                 $inform  .= $contact["notify"];
1059                         }
1060
1061                         $profile = $contact["url"];
1062                         $alias   = $contact["alias"];
1063                         $newname = defaults($contact, "name", $contact["nick"]);
1064                 }
1065
1066                 //if there is an url for this persons profile
1067                 if (isset($profile) && ($newname != "")) {
1068                         $replaced = true;
1069                         // create profile link
1070                         $profile = str_replace(',', '%2c', $profile);
1071                         $newtag = $tag_type.'[url=' . $profile . ']' . $newname . '[/url]';
1072                         $body = str_replace($tag_type . $name, $newtag, $body);
1073                         // append tag to str_tags
1074                         if (!stristr($str_tags, $newtag)) {
1075                                 if (strlen($str_tags)) {
1076                                         $str_tags .= ',';
1077                                 }
1078                                 $str_tags .= $newtag;
1079                         }
1080
1081                         /*
1082                          * Status.Net seems to require the numeric ID URL in a mention if the person isn't
1083                          * subscribed to you. But the nickname URL is OK if they are. Grrr. We'll tag both.
1084                          */
1085                         if (!empty($alias)) {
1086                                 $newtag = '@[url=' . $alias . ']' . $newname . '[/url]';
1087                                 if (!stripos($str_tags, '[url=' . $alias . ']')) {
1088                                         if (strlen($str_tags)) {
1089                                                 $str_tags .= ',';
1090                                         }
1091                                         $str_tags .= $newtag;
1092                                 }
1093                         }
1094                 }
1095         }
1096
1097         return ['replaced' => $replaced, 'contact' => $contact];
1098 }
1099
1100 function item_add_implicit_mentions(array $tags, array $thread_parent_contact, $thread_parent_id)
1101 {
1102         if (Config::get('system', 'disable_implicit_mentions')) {
1103                 // Add a tag if the parent contact is from ActivityPub or OStatus (This will notify them)
1104                 if (in_array($thread_parent_contact['network'], [Protocol::OSTATUS, Protocol::ACTIVITYPUB])) {
1105                         $contact = Term::TAG_CHARACTER[Term::MENTION] . '[url=' . $thread_parent_contact['url'] . ']' . $thread_parent_contact['nick'] . '[/url]';
1106                         if (!stripos(implode($tags), '[url=' . $thread_parent_contact['url'] . ']')) {
1107                                 $tags[] = $contact;
1108                         }
1109                 }
1110         } else {
1111                 $implicit_mentions = [
1112                         $thread_parent_contact['url'] => $thread_parent_contact['nick']
1113                 ];
1114
1115                 $parent_terms = Term::tagArrayFromItemId($thread_parent_id, [Term::MENTION, Term::IMPLICIT_MENTION]);
1116
1117                 foreach ($parent_terms as $parent_term) {
1118                         $implicit_mentions[$parent_term['url']] = $parent_term['term'];
1119                 }
1120
1121                 foreach ($implicit_mentions as $url => $label) {
1122                         if ($url != \Friendica\Model\Profile::getMyURL() && !stripos(implode($tags), '[url=' . $url . ']')) {
1123                                 $tags[] = Term::TAG_CHARACTER[Term::IMPLICIT_MENTION] . '[url=' . $url . ']' . $label . '[/url]';
1124                         }
1125                 }
1126         }
1127
1128         return $tags;
1129 }