]> git.mxchange.org Git - friendica.git/blobdiff - mod/item.php
Fix for: empty posts and comments that hadn't been transmitted to Diaspora
[friendica.git] / mod / item.php
index ffac1c8e445deb4dddb6c824212d77d83b7bb3fe..be9fa09c478985c2496525ede78ca73fa2c03ce7 100644 (file)
  *
  * All of these become an "item" which is our basic unit of
  * information.
- *
- * Posts that originate externally or do not fall into the above
- * posting categories go through item_store() instead of this function.
  */
+
 use Friendica\App;
+use Friendica\Content\Text\BBCode;
+use Friendica\Core\Addon;
 use Friendica\Core\Config;
+use Friendica\Core\L10n;
 use Friendica\Core\System;
 use Friendica\Core\Worker;
 use Friendica\Database\DBM;
-use Friendica\Model\GlobalContact;
-use Friendica\Network\Probe;
-use Friendica\Object\Contact;
+use Friendica\Model\Contact;
+use Friendica\Model\Item;
 use Friendica\Protocol\Diaspora;
 use Friendica\Protocol\Email;
+use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Emailer;
 
-require_once 'include/crypto.php';
 require_once 'include/enotify.php';
-require_once 'include/tags.php';
-require_once 'include/files.php';
-require_once 'include/threads.php';
 require_once 'include/text.php';
 require_once 'include/items.php';
 
 function item_post(App $a) {
-
-       if ((! local_user()) && (! remote_user()) && (! x($_REQUEST, 'commenter'))) {
+       if (!local_user() && !remote_user()) {
                return;
        }
 
@@ -50,21 +46,21 @@ function item_post(App $a) {
        if (x($_REQUEST, 'dropitems')) {
                $arr_drop = explode(',', $_REQUEST['dropitems']);
                drop_items($arr_drop);
-               $json = array('success' => 1);
+               $json = ['success' => 1];
                echo json_encode($json);
                killme();
        }
 
-       call_hooks('post_local_start', $_REQUEST);
-       // logger('postinput ' . file_get_contents('php://input'));
+       Addon::callHooks('post_local_start', $_REQUEST);
+
        logger('postvars ' . print_r($_REQUEST,true), LOGGER_DATA);
 
-       $api_source = ((x($_REQUEST, 'api_source') && $_REQUEST['api_source']) ? true : false);
+       $api_source = defaults($_REQUEST, 'api_source', false);
 
        $message_id = ((x($_REQUEST, 'message_id') && $api_source) ? strip_tags($_REQUEST['message_id']) : '');
 
-       $return_path = ((x($_REQUEST, 'return')) ? $_REQUEST['return'] : '');
-       $preview = ((x($_REQUEST, 'preview')) ? intval($_REQUEST['preview']) : 0);
+       $return_path = defaults($_REQUEST, 'return', '');
+       $preview = intval(defaults($_REQUEST, 'preview', 0));
 
        /*
         * Check for doubly-submitted posts, and reject duplicates
@@ -81,94 +77,56 @@ function item_post(App $a) {
        }
 
        // Is this a reply to something?
-       $parent = ((x($_REQUEST, 'parent')) ? intval($_REQUEST['parent']) : 0);
-       $parent_uri = ((x($_REQUEST, 'parent_uri')) ? trim($_REQUEST['parent_uri']) : '');
+       $thr_parent = intval(defaults($_REQUEST, 'parent', 0));
+       $thr_parent_uri = trim(defaults($_REQUEST, 'parent_uri', ''));
 
-       $parent_item = null;
-       $parent_contact = null;
-       $thr_parent = '';
-       $parid = 0;
-       $r = false;
-       $objecttype = null;
+       $thr_parent_contact = null;
 
-       if ($parent || $parent_uri) {
+       $parent = 0;
+       $parent_item = null;
+       $parent_user = null;
 
-               $objecttype = ACTIVITY_OBJ_COMMENT;
+       $parent_contact = null;
 
-               if (! x($_REQUEST, 'type')) {
-                       $_REQUEST['type'] = 'net-comment';
-               }
+       $objecttype = null;
+       $profile_uid = defaults($_REQUEST, 'profile_uid', local_user());
 
-               if ($parent) {
-                       $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1",
-                               intval($parent)
-                       );
-               } elseif ($parent_uri && local_user()) {
-                       // This is coming from an API source, and we are logged in
-                       $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
-                               dbesc($parent_uri),
-                               intval(local_user())
-                       );
+       if ($thr_parent || $thr_parent_uri) {
+               if ($thr_parent) {
+                       $parent_item = Item::selectFirst([], ['id' => $thr_parent]);
+               } elseif ($thr_parent_uri) {
+                       $parent_item = Item::selectFirst([], ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
                }
 
                // if this isn't the real parent of the conversation, find it
-               if (DBM::is_result($r)) {
-                       $parid = $r[0]['parent'];
-                       $parent_uri = $r[0]['uri'];
-                       if ($r[0]['id'] != $r[0]['parent']) {
-                               $r = q("SELECT * FROM `item` WHERE `id` = `parent` AND `parent` = %d LIMIT 1",
-                                       intval($parid)
-                               );
+               if (DBM::is_result($parent_item)) {
+
+                       // The URI and the contact is taken from the direct parent which needn't to be the top parent
+                       $thr_parent_uri = $parent_item['uri'];
+                       $thr_parent_contact = Contact::getDetailsByURL($parent_item["author-link"]);
+
+                       if ($parent_item['id'] != $parent_item['parent']) {
+                               $parent_item = dba::selectFirst('item', [], ['id' => $parent_item['parent']]);
                        }
                }
 
-               if (! DBM::is_result($r)) {
-                       notice( t('Unable to locate original post.') . EOL);
+               if (!DBM::is_result($parent_item)) {
+                       notice(L10n::t('Unable to locate original post.') . EOL);
                        if (x($_REQUEST, 'return')) {
                                goaway($return_path);
                        }
                        killme();
                }
-               $parent_item = $r[0];
-               $parent = $r[0]['id'];
-
-               // multi-level threading - preserve the info but re-parent to our single level threading
-               //if(($parid) && ($parid != $parent))
-               $thr_parent = $parent_uri;
-
-               if ($parent_item['contact-id'] && $uid) {
-                       $r = q("SELECT * FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
-                               intval($parent_item['contact-id']),
-                               intval($uid)
-                       );
-                       if (DBM::is_result($r)) {
-                               $parent_contact = $r[0];
-                       }
 
-                       // If the contact id doesn't fit with the contact, then set the contact to null
-                       $thrparent = q("SELECT `author-link`, `network` FROM `item` WHERE `uri` = '%s' LIMIT 1", dbesc($thr_parent));
-                       if (DBM::is_result($thrparent) && ($thrparent[0]["network"] === NETWORK_OSTATUS)
-                               && (normalise_link($parent_contact["url"]) != normalise_link($thrparent[0]["author-link"]))) {
-                               $parent_contact = Contact::getDetailsByURL($thrparent[0]["author-link"]);
-
-                               if (!isset($parent_contact["nick"])) {
-                                       $probed_contact = Probe::uri($thrparent[0]["author-link"]);
-                                       if ($probed_contact["network"] != NETWORK_FEED) {
-                                               $parent_contact = $probed_contact;
-                                               $parent_contact["nurl"] = normalise_link($probed_contact["url"]);
-                                               $parent_contact["thumb"] = $probed_contact["photo"];
-                                               $parent_contact["micro"] = $probed_contact["photo"];
-                                               $parent_contact["addr"] = $probed_contact["addr"];
-                                       }
-                               }
-                               logger('no contact found: ' . print_r($thrparent, true), LOGGER_DEBUG);
-                       } else {
-                               logger('parent contact: ' . print_r($parent_contact, true), LOGGER_DEBUG);
-                       }
+               $parent = $parent_item['id'];
+               $parent_user = $parent_item['uid'];
 
-                       if ($parent_contact["nick"] == "") {
-                               $parent_contact["nick"] = $parent_contact["name"];
-                       }
+               $parent_contact = Contact::getDetailsByURL($parent_item["author-link"]);
+
+               $objecttype = ACTIVITY_OBJ_COMMENT;
+
+               if (!x($_REQUEST, 'type')) {
+                       $_REQUEST['type'] = 'net-comment';
                }
        }
 
@@ -176,45 +134,30 @@ function item_post(App $a) {
                logger('mod_item: item_post parent=' . $parent);
        }
 
-       $profile_uid = ((x($_REQUEST, 'profile_uid')) ? intval($_REQUEST['profile_uid']) : 0);
-       $post_id     = ((x($_REQUEST, 'post_id'))     ? intval($_REQUEST['post_id'])     : 0);
-       $app         = ((x($_REQUEST, 'source'))      ? strip_tags($_REQUEST['source'])  : '');
-       $extid       = ((x($_REQUEST, 'extid'))       ? strip_tags($_REQUEST['extid'])   : '');
-       $object      = ((x($_REQUEST, 'object'))      ? $_REQUEST['object']              : '');
+       $post_id     = intval(defaults($_REQUEST, 'post_id', 0));
+       $app         = strip_tags(defaults($_REQUEST, 'source', ''));
+       $extid       = strip_tags(defaults($_REQUEST, 'extid', ''));
+       $object      = defaults($_REQUEST, 'object', '');
+
+       // Ensure that the user id in a thread always stay the same
+       if (!is_null($parent_user) && in_array($parent_user, [local_user(), 0])) {
+               $profile_uid = $parent_user;
+       }
 
        // Check for multiple posts with the same message id (when the post was created via API)
        if (($message_id != '') && ($profile_uid != 0)) {
-               $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
-                       dbesc($message_id),
-                       intval($profile_uid)
-               );
-
-               if (DBM::is_result($r)) {
+               if (dba::exists('item', ['uri' => $message_id, 'uid' => $profile_uid])) {
                        logger("Message with URI ".$message_id." already exists for user ".$profile_uid, LOGGER_DEBUG);
                        return;
                }
        }
 
-       $allow_moderated = false;
+       // Allow commenting if it is an answer to a public post
+       $allow_comment = local_user() && ($profile_uid == 0) && $parent && in_array($parent_item['network'], [NETWORK_OSTATUS, NETWORK_DIASPORA, NETWORK_DFRN]);
 
-       // here is where we are going to check for permission to post a moderated comment.
-
-       // First check that the parent exists and it is a wall item.
-
-       if ((x($_REQUEST, 'commenter')) && ((! $parent) || (! $parent_item['wall']))) {
-               notice(t('Permission denied.') . EOL) ;
-               if (x($_REQUEST, 'return')) {
-                       goaway($return_path);
-               }
-               killme();
-       }
-
-       /*
-        * Now check that it is a page_type of PAGE_BLOG, and that valid personal details
-        * have been provided, and run any anti-spam plugins
-        */
-       if ((! can_write_wall($a, $profile_uid)) && (! $allow_moderated)) {
-               notice(t('Permission denied.') . EOL) ;
+       // Now check that valid personal details have been provided
+       if (!can_write_wall($profile_uid) && !$allow_comment) {
+               notice(L10n::t('Permission denied.') . EOL) ;
                if (x($_REQUEST, 'return')) {
                        goaway($return_path);
                }
@@ -227,23 +170,12 @@ function item_post(App $a) {
        $orig_post = null;
 
        if ($post_id) {
-               $i = q("SELECT * FROM `item` WHERE `uid` = %d AND `id` = %d LIMIT 1",
-                       intval($profile_uid),
-                       intval($post_id)
-               );
-               if (! DBM::is_result($i)) {
-                       killme();
-               }
-               $orig_post = $i[0];
+               $orig_post = dba::selectFirst('item', [], ['id' => $post_id]);
        }
 
-       $user = null;
-
-       $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
-               intval($profile_uid)
-       );
-       if (DBM::is_result($r)) {
-               $user = $r[0];
+       $user = dba::selectFirst('user', [], ['uid' => $profile_uid]);
+       if (!DBM::is_result($user) && !$parent) {
+               return;
        }
 
        if ($orig_post) {
@@ -261,7 +193,7 @@ function item_post(App $a) {
                $title             = notags(trim($_REQUEST['title']));
                $body              = escape_tags(trim($_REQUEST['body']));
                $private           = $orig_post['private'];
-               $pubmail_enable    = $orig_post['pubmail'];
+               $pubmail_enabled   = $orig_post['pubmail'];
                $network           = $orig_post['network'];
                $guid              = $orig_post['guid'];
                $extid             = $orig_post['extid'];
@@ -274,19 +206,17 @@ function item_post(App $a) {
                 * been supplied via a form.
                 */
                /// @TODO use x($_REQUEST, 'foo') here
-               if (($api_source)
-                       && (! array_key_exists('contact_allow', $_REQUEST))
-                       && (! array_key_exists('group_allow', $_REQUEST))
-                       && (! array_key_exists('contact_deny', $_REQUEST))
-                       && (! array_key_exists('group_deny', $_REQUEST))) {
+               if ($api_source
+                       && !array_key_exists('contact_allow', $_REQUEST)
+                       && !array_key_exists('group_allow', $_REQUEST)
+                       && !array_key_exists('contact_deny', $_REQUEST)
+                       && !array_key_exists('group_deny', $_REQUEST)) {
                        $str_group_allow   = $user['allow_gid'];
                        $str_contact_allow = $user['allow_cid'];
                        $str_group_deny    = $user['deny_gid'];
                        $str_contact_deny  = $user['deny_cid'];
                } else {
-
                        // use the posted permissions
-
                        $str_group_allow   = perms2str($_REQUEST['group_allow']);
                        $str_contact_allow = perms2str($_REQUEST['contact_allow']);
                        $str_group_deny    = perms2str($_REQUEST['group_deny']);
@@ -299,11 +229,10 @@ function item_post(App $a) {
                $verb              = notags(trim($_REQUEST['verb']));
                $emailcc           = notags(trim($_REQUEST['emailcc']));
                $body              = escape_tags(trim($_REQUEST['body']));
-               $network           = notags(trim($_REQUEST['network']));
+               $network           = notags(trim(defaults($_REQUEST, 'network', NETWORK_DFRN)));
                $guid              = get_guid(32);
 
-               item_add_language_opt($_REQUEST);
-               $postopts = $_REQUEST['postopts'] ? $_REQUEST['postopts'] : "";
+               $postopts = defaults($_REQUEST, 'postopts', '');
 
                $private = ((strlen($str_group_allow) || strlen($str_contact_allow) || strlen($str_group_deny) || strlen($str_contact_deny)) ? 1 : 0);
 
@@ -329,28 +258,20 @@ function item_post(App $a) {
                        $private           = $parent_item['private'];
                }
 
-               $pubmail_enable    = ((x($_REQUEST, 'pubmail_enable') && intval($_REQUEST['pubmail_enable']) && (! $private)) ? 1 : 0);
+               $pubmail_enabled = defaults($_REQUEST, 'pubmail_enable', false) && !$private;
 
                // if using the API, we won't see pubmail_enable - figure out if it should be set
-
-               if ($api_source && $profile_uid && $profile_uid == local_user() && (! $private)) {
-                       $mail_disabled = ((function_exists('imap_open') && (! Config::get('system', 'imap_disabled'))) ? 0 : 1);
-                       if (! $mail_disabled) {
-                               /// @TODO Check if only pubmail is loaded, * loads all columns
-                               $r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1",
-                                       intval(local_user())
-                               );
-                               if (DBM::is_result($r) && intval($r[0]['pubmail'])) {
-                                       $pubmail_enabled = true;
-                               }
+               if ($api_source && $profile_uid && $profile_uid == local_user() && !$private) {
+                       if (function_exists('imap_open') && !Config::get('system', 'imap_disabled')) {
+                               $pubmail_enabled = dba::exists('mailacct', ["`uid` = ? AND `server` != ? AND `pubmail`", local_user(), '']);
                        }
                }
 
-               if (! strlen($body)) {
+               if (!strlen($body)) {
                        if ($preview) {
                                killme();
                        }
-                       info(t('Empty post discarded.') . EOL );
+                       info(L10n::t('Empty post discarded.') . EOL);
                        if (x($_REQUEST, 'return')) {
                                goaway($return_path);
                        }
@@ -377,11 +298,10 @@ function item_post(App $a) {
        $self   = false;
        $contact_id = 0;
 
-       if ((local_user()) && (local_user() == $profile_uid)) {
+       if (local_user() && ((local_user() == $profile_uid) || $allow_comment)) {
                $self = true;
-               $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
-                       intval($_SESSION['uid']));
-       } elseif(remote_user()) {
+               $author = dba::selectFirst('contact', [], ['uid' => local_user(), 'self' => true]);
+       } elseif (remote_user()) {
                if (x($_SESSION, 'remote') && is_array($_SESSION['remote'])) {
                        foreach ($_SESSION['remote'] as $v) {
                                if ($v['uid'] == $profile_uid) {
@@ -391,28 +311,19 @@ function item_post(App $a) {
                        }
                }
                if ($contact_id) {
-                       $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
-                               intval($contact_id)
-                       );
+                       $author = dba::selectFirst('contact', [], ['id' => $contact_id]);
                }
        }
 
-       if (DBM::is_result($r)) {
-               $author = $r[0];
+       if (DBM::is_result($author)) {
                $contact_id = $author['id'];
        }
 
        // get contact info for owner
-
-       if ($profile_uid == local_user()) {
+       if ($profile_uid == local_user() || $allow_comment) {
                $contact_record = $author;
        } else {
-               $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 1 LIMIT 1",
-                       intval($profile_uid)
-               );
-               if (DBM::is_result($r)) {
-                       $contact_record = $r[0];
-               }
+               $contact_record = dba::selectFirst('contact', [], ['uid' => $profile_uid, 'self' => true]);
        }
 
        $post_type = notags(trim($_REQUEST['type']));
@@ -431,47 +342,31 @@ function item_post(App $a) {
 
        $tags = get_tags($body);
 
-       /*
-        * add a statusnet style reply tag if the original post was from there
-        * and we are replying, and there isn't one already
-        */
-       if ($parent && ($parent_contact['network'] == NETWORK_OSTATUS)) {
-               $contact = '@[url=' . $parent_contact['url'] . ']' . $parent_contact['nick'] . '[/url]';
-
-               if (!in_array($contact, $tags)) {
-                       $body = $contact . ' ' . $body;
-                       $tags[] = $contact;
-               }
-
-               $toplevel_contact = "";
-               $toplevel_parent = q("SELECT `contact`.* FROM `contact`
-                                               INNER JOIN `item` ON `item`.`contact-id` = `contact`.`id` AND `contact`.`url` = `item`.`author-link`
-                                               WHERE `item`.`id` = `item`.`parent` AND `item`.`parent` = %d", intval($parent));
-               if (DBM::is_result($toplevel_parent)) {
-                       if (!empty($toplevel_parent[0]['addr'])) {
-                               $toplevel_contact = '@' . $toplevel_parent[0]['addr'];
-                       } else {
-                               $toplevel_contact = '@' . $toplevel_parent[0]['nick'] . '+' . $toplevel_parent[0]['id'];
+       // Add a tag if the parent contact is from OStatus (This will notify them during delivery)
+       if ($parent) {
+               if ($thr_parent_contact['network'] == NETWORK_OSTATUS) {
+                       $contact = '@[url=' . $thr_parent_contact['url'] . ']' . $thr_parent_contact['nick'] . '[/url]';
+                       if (!stripos(implode($tags), '[url=' . $thr_parent_contact['url'] . ']')) {
+                               $tags[] = $contact;
                        }
-               } else {
-                       $toplevel_parent = q("SELECT `author-link`, `author-name` FROM `item` WHERE `id` = `parent` AND `parent` = %d", intval($parent));
-                       $toplevel_contact = '@[url=' . $toplevel_parent[0]['author-link'] . ']' . $toplevel_parent[0]['author-name'] . '[/url]';
                }
 
-               if (!in_array($toplevel_contact, $tags)) {
-                       $tags[] = $toplevel_contact;
+               if ($parent_contact['network'] == NETWORK_OSTATUS) {
+                       $contact = '@[url=' . $parent_contact['url'] . ']' . $parent_contact['nick'] . '[/url]';
+                       if (!stripos(implode($tags), '[url=' . $parent_contact['url'] . ']')) {
+                               $tags[] = $contact;
+                       }
                }
        }
 
-       $tagged = array();
+       $tagged = [];
 
        $private_forum = false;
        $only_to_forum = false;
-       $forum_contact = array();
+       $forum_contact = [];
 
        if (count($tags)) {
                foreach ($tags as $tag) {
-
                        $tag_type = substr($tag, 0, 1);
 
                        if ($tag_type == '#') {
@@ -483,7 +378,7 @@ function item_post(App $a) {
                         * Robert Johnson should be first in the $tags array
                         */
                        $fullnametagged = false;
-                       /// @TODO $tagged is initialized above if() block and is not filled, maybe old-lost code?
+                       /// @TODO $tagged is initialized above if () block and is not filled, maybe old-lost code?
                        foreach ($tagged as $nextTag) {
                                if (stristr($nextTag, $tag . ' ')) {
                                        $fullnametagged = true;
@@ -494,7 +389,7 @@ function item_post(App $a) {
                                continue;
                        }
 
-                       $success = handle_tag($a, $body, $inform, $str_tags, (local_user()) ? local_user() : $profile_uid , $tag, $network);
+                       $success = handle_tag($a, $body, $inform, $str_tags, local_user() ? local_user() : $profile_uid, $tag, $network);
                        if ($success['replaced']) {
                                $tagged[] = $tag;
                        }
@@ -545,6 +440,7 @@ function item_post(App $a) {
 
        $match = null;
 
+       /// @todo these lines should be moved to Model/Photo
        if (!$preview && preg_match_all("/\[img([\=0-9x]*?)\](.*?)\[\/img\]/",$body,$match)) {
                $images = $match[2];
                if (count($images)) {
@@ -560,29 +456,20 @@ function item_post(App $a) {
                                if (!strlen($image_uri)) {
                                        continue;
                                }
-                               $srch = '<' . intval($original_contact_id) . '>';
 
-                               $r = q("SELECT `id` FROM `photo` WHERE `allow_cid` = '%s' AND `allow_gid` = '' AND `deny_cid` = '' AND `deny_gid` = ''
-                                       AND `resource-id` = '%s' AND `uid` = %d LIMIT 1",
-                                       dbesc($srch),
-                                       dbesc($image_uri),
-                                       intval($profile_uid)
-                               );
+                               // Ensure to only modify photos that you own
+                               $srch = '<' . intval($original_contact_id) . '>';
 
-                               if (! DBM::is_result($r)) {
+                               $condition = ['allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
+                                               'resource-id' => $image_uri, 'uid' => $profile_uid];
+                               if (!dba::exists('photo', $condition)) {
                                        continue;
                                }
 
-                               $r = q("UPDATE `photo` SET `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s'
-                                       WHERE `resource-id` = '%s' AND `uid` = %d AND `album` = '%s' ",
-                                       dbesc($str_contact_allow),
-                                       dbesc($str_group_allow),
-                                       dbesc($str_contact_deny),
-                                       dbesc($str_group_deny),
-                                       dbesc($image_uri),
-                                       intval($profile_uid),
-                                       dbesc(t('Wall Photos'))
-                               );
+                               $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
+                                               'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
+                               $condition = ['resource-id' => $image_uri, 'uid' => $profile_uid, 'album' => L10n::t('Wall Photos')];
+                               dba::update('photo', $fields, $condition);
                        }
                }
        }
@@ -593,25 +480,24 @@ function item_post(App $a) {
         */
        $match = false;
 
-       if ((! $preview) && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
+       /// @todo these lines should be moved to Model/Attach (Once it exists)
+       if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
                $attaches = $match[1];
                if (count($attaches)) {
                        foreach ($attaches as $attach) {
-                               $r = q("SELECT * FROM `attach` WHERE `uid` = %d AND `id` = %d LIMIT 1",
-                                       intval($profile_uid),
-                                       intval($attach)
-                               );
-                               if (DBM::is_result($r)) {
-                                       $r = q("UPDATE `attach` SET `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s'
-                                               WHERE `uid` = %d AND `id` = %d",
-                                               dbesc($str_contact_allow),
-                                               dbesc($str_group_allow),
-                                               dbesc($str_contact_deny),
-                                               dbesc($str_group_deny),
-                                               intval($profile_uid),
-                                               intval($attach)
-                                       );
+                               // Ensure to only modify attachments that you own
+                               $srch = '<' . intval($original_contact_id) . '>';
+
+                               $condition = ['allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
+                                               'id' => $attach];
+                               if (!dba::exists('attach', $condition)) {
+                                       continue;
                                }
+
+                               $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
+                                               'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
+                               $condition = ['id' => $attach];
+                               dba::update('attach', $fields, $condition);
                        }
                }
        }
@@ -619,7 +505,7 @@ function item_post(App $a) {
        // embedded bookmark or attachment in post? set bookmark flag
 
        $bookmark = 0;
-       $data = get_attachment_data($body);
+       $data = BBCode::getAttachmentData($body);
        if (preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data["type"])) {
                $objecttype = ACTIVITY_OBJ_BOOKMARK;
                $bookmark = 1;
@@ -631,13 +517,12 @@ function item_post(App $a) {
        // Fold multi-line [code] sequences
        $body = preg_replace('/\[\/code\]\s*\[code\]/ism', "\n", $body);
 
-       $body = scale_external_images($body, false);
+       $body = BBCode::scaleExternalImages($body, false);
 
        // Setting the object type if not defined before
        if (!$objecttype) {
                $objecttype = ACTIVITY_OBJ_NOTE; // Default value
-               require_once 'include/plaintext.php';
-               $objectdata = get_attached_data($body);
+               $objectdata = BBCode::getAttachedData($body);
 
                if ($objectdata["type"] == "link") {
                        $objecttype = ACTIVITY_OBJ_BOOKMARK;
@@ -654,15 +539,15 @@ function item_post(App $a) {
 
        if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
                foreach ($match[2] as $mtch) {
-                       $r = q("SELECT `id`,`filename`,`filesize`,`filetype` FROM `attach` WHERE `uid` = %d AND `id` = %d LIMIT 1",
-                               intval($profile_uid),
-                               intval($mtch)
-                       );
-                       if (DBM::is_result($r)) {
+                       $fields = ['id', 'filename', 'filesize', 'filetype'];
+                       $attachment = dba::selectFirst('attach', $fields, ['id' => $mtch]);
+                       if (DBM::is_result($attachment)) {
                                if (strlen($attachments)) {
                                        $attachments .= ',';
                                }
-                               $attachments .= '[attach]href="' . System::baseUrl() . '/attach/' . $r[0]['id'] . '" length="' . $r[0]['filesize'] . '" type="' . $r[0]['filetype'] . '" title="' . (($r[0]['filename']) ? $r[0]['filename'] : '') . '"[/attach]';
+                               $attachments .= '[attach]href="' . System::baseUrl() . '/attach/' . $attachment['id'] .
+                                               '" length="' . $attachment['filesize'] . '" type="' . $attachment['filetype'] .
+                                               '" title="' . ($attachment['filename'] ? $attachment['filename'] : '') . '"[/attach]';
                        }
                        $body = str_replace($match[1],'',$body);
                }
@@ -674,31 +559,31 @@ function item_post(App $a) {
                $wall = 1;
        }
 
-       if (! strlen($verb)) {
-               $verb = ACTIVITY_POST ;
+       if (!strlen($verb)) {
+               $verb = ACTIVITY_POST;
        }
 
        if ($network == "") {
                $network = NETWORK_DFRN;
        }
 
-       $gravity = (($parent) ? 6 : 0 );
+       $gravity = ($parent ? GRAVITY_COMMENT : GRAVITY_PARENT);
 
        // even if the post arrived via API we are considering that it
        // originated on this site by default for determining relayability.
 
-       $origin = ((x($_REQUEST, 'origin')) ? intval($_REQUEST['origin']) : 1);
+       $origin = intval(defaults($_REQUEST, 'origin', 1));
 
-       $notify_type = (($parent) ? 'comment-new' : 'wall-new' );
+       $notify_type = ($parent ? 'comment-new' : 'wall-new');
 
-       $uri = (($message_id) ? $message_id : item_new_uri($a->get_hostname(),$profile_uid, $guid));
+       $uri = ($message_id ? $message_id : Item::newURI($profile_uid, $guid));
 
-       // Fallback so that we alway have a thr-parent
-       if (!$thr_parent) {
-               $thr_parent = $uri;
+       // Fallback so that we alway have a parent uri
+       if (!$thr_parent_uri || !$parent) {
+               $thr_parent_uri = $uri;
        }
 
-       $datarray = array();
+       $datarray = [];
        $datarray['uid']           = $profile_uid;
        $datarray['type']          = $post_type;
        $datarray['wall']          = $wall;
@@ -708,16 +593,16 @@ function item_post(App $a) {
        $datarray['owner-name']    = $contact_record['name'];
        $datarray['owner-link']    = $contact_record['url'];
        $datarray['owner-avatar']  = $contact_record['thumb'];
-       $datarray['owner-id']      = Contact::getIdForURL($datarray['owner-link'], 0);
+       $datarray['owner-id']      = Contact::getIdForURL($datarray['owner-link']);
        $datarray['author-name']   = $author['name'];
        $datarray['author-link']   = $author['url'];
        $datarray['author-avatar'] = $author['thumb'];
-       $datarray['author-id']     = Contact::getIdForURL($datarray['author-link'], 0);
-       $datarray['created']       = datetime_convert();
-       $datarray['edited']        = datetime_convert();
-       $datarray['commented']     = datetime_convert();
-       $datarray['received']      = datetime_convert();
-       $datarray['changed']       = datetime_convert();
+       $datarray['author-id']     = Contact::getIdForURL($datarray['author-link']);
+       $datarray['created']       = DateTimeFormat::utcNow();
+       $datarray['edited']        = DateTimeFormat::utcNow();
+       $datarray['commented']     = DateTimeFormat::utcNow();
+       $datarray['received']      = DateTimeFormat::utcNow();
+       $datarray['changed']       = DateTimeFormat::utcNow();
        $datarray['extid']         = $extid;
        $datarray['guid']          = $guid;
        $datarray['uri']           = $uri;
@@ -736,43 +621,39 @@ function item_post(App $a) {
        $datarray['deny_cid']      = $str_contact_deny;
        $datarray['deny_gid']      = $str_group_deny;
        $datarray['private']       = $private;
-       $datarray['pubmail']       = $pubmail_enable;
+       $datarray['pubmail']       = $pubmail_enabled;
        $datarray['attach']        = $attachments;
        $datarray['bookmark']      = intval($bookmark);
-       $datarray['thr-parent']    = $thr_parent;
+
+       // This is not a bug. The item store function changes 'parent-uri' to 'thr-parent' and fetches 'parent-uri' new. (We should change this)
+       $datarray['parent-uri']    = $thr_parent_uri;
+
        $datarray['postopts']      = $postopts;
        $datarray['origin']        = $origin;
-       $datarray['moderated']     = $allow_moderated;
-       $datarray['gcontact-id']   = GlobalContact::getId(array("url" => $datarray['author-link'], "network" => $datarray['network'],
-                                                       "photo" => $datarray['author-avatar'], "name" => $datarray['author-name']));
+       $datarray['moderated']     = false;
        $datarray['object']        = $object;
 
        /*
-        * These fields are for the convenience of plugins...
+        * These fields are for the convenience of addons...
         * 'self' if true indicates the owner is posting on their own wall
         * If parent is 0 it is a top-level post.
         */
        $datarray['parent']        = $parent;
        $datarray['self']          = $self;
-//     $datarray['prvnets']       = $user['prvnets'];
 
        // This triggers posts via API and the mirror functions
        $datarray['api_source'] = $api_source;
 
-       $datarray['parent-uri'] = ($parent == 0) ? $uri : $parent_item['uri'];
-       $datarray['plink'] = System::baseUrl() . '/display/' . urlencode($datarray['guid']);
-       $datarray['last-child'] = 1;
-       $datarray['visible'] = 1;
-
+       // This field is for storing the raw conversation data
        $datarray['protocol'] = PROTOCOL_DFRN;
 
-       $r = dba::fetch_first("SELECT `conversation-uri`, `conversation-href` FROM `conversation` WHERE `item-uri` = ?", $datarray['parent-uri']);
-       if (DBM::is_result($r)) {
+       $conversation = dba::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $datarray['parent-uri']]);
+       if (DBM::is_result($conversation)) {
                if ($r['conversation-uri'] != '') {
-                       $datarray['conversation-uri'] = $r['conversation-uri'];
+                       $datarray['conversation-uri'] = $conversation['conversation-uri'];
                }
                if ($r['conversation-href'] != '') {
-                       $datarray['conversation-href'] = $r['conversation-href'];
+                       $datarray['conversation-href'] = $conversation['conversation-href'];
                }
        }
 
@@ -780,8 +661,10 @@ function item_post(App $a) {
                $datarray['edit'] = true;
        }
 
-       // Search for hashtags
-       item_body_set_hashtags($datarray);
+       // Check for hashtags in the body and repair or add hashtag links
+       if ($preview || $orig_post) {
+               Item::setHashtags($datarray);
+       }
 
        // preview mode - prepare the body for display and send it via json
        if ($preview) {
@@ -789,21 +672,21 @@ function item_post(App $a) {
                // We set the datarray ID to -1 because in preview mode the dataray
                // doesn't have an ID.
                $datarray["id"] = -1;
-               $o = conversation($a,array(array_merge($contact_record,$datarray)),'search', false, true);
+               $o = conversation($a,[array_merge($contact_record,$datarray)],'search', false, true);
                logger('preview: ' . $o);
-               echo json_encode(array('preview' => $o));
+               echo json_encode(['preview' => $o]);
                killme();
        }
 
-       call_hooks('post_local',$datarray);
+       Addon::callHooks('post_local',$datarray);
 
        if (x($datarray, 'cancel')) {
-               logger('mod_item: post cancelled by plugin.');
+               logger('mod_item: post cancelled by addon.');
                if ($return_path) {
                        goaway($return_path);
                }
 
-               $json = array('cancel' => 1);
+               $json = ['cancel' => 1];
                if (x($_REQUEST, 'jsreload') && strlen($_REQUEST['jsreload'])) {
                        $json['reload'] = System::baseUrl() . '/' . $_REQUEST['jsreload'];
                }
@@ -812,35 +695,29 @@ function item_post(App $a) {
                killme();
        }
 
-       // Fill the cache field
-       put_item_in_cache($datarray);
+       if ($orig_post) {
 
-       $datarray = store_conversation($datarray);
+               // Fill the cache field
+               // This could be done in Item::update as well - but we have to check for the existance of some fields.
+               put_item_in_cache($datarray);
 
-       if ($orig_post) {
-               $r = q("UPDATE `item` SET `title` = '%s', `body` = '%s', `tag` = '%s', `attach` = '%s', `file` = '%s', `rendered-html` = '%s', `rendered-hash` = '%s', `edited` = '%s', `changed` = '%s' WHERE `id` = %d AND `uid` = %d",
-                       dbesc($datarray['title']),
-                       dbesc($datarray['body']),
-                       dbesc($datarray['tag']),
-                       dbesc($datarray['attach']),
-                       dbesc($datarray['file']),
-                       dbesc($datarray['rendered-html']),
-                       dbesc($datarray['rendered-hash']),
-                       dbesc(datetime_convert()),
-                       dbesc(datetime_convert()),
-                       intval($post_id),
-                       intval($profile_uid)
-               );
-
-               create_tags_from_item($post_id);
-               create_files_from_item($post_id);
-               update_thread($post_id);
+               $fields = [
+                       'title' => $datarray['title'],
+                       'body' => $datarray['body'],
+                       'tag' => $datarray['tag'],
+                       'attach' => $datarray['attach'],
+                       'file' => $datarray['file'],
+                       'rendered-html' => $datarray['rendered-html'],
+                       'rendered-hash' => $datarray['rendered-hash'],
+                       'edited' => DateTimeFormat::utcNow(),
+                       'changed' => DateTimeFormat::utcNow()];
+
+               Item::update($fields, ['id' => $post_id]);
 
                // update filetags in pconfig
                file_tag_update_pconfig($uid,$categories_old,$categories_new,'category');
 
-               Worker::add(PRIORITY_HIGH, "Notifier", 'edit_post', $post_id);
-               if ((x($_REQUEST, 'return')) && strlen($return_path)) {
+               if (x($_REQUEST, 'return') && strlen($return_path)) {
                        logger('return: ' . $return_path);
                        goaway($return_path);
                }
@@ -849,125 +726,31 @@ function item_post(App $a) {
                $post_id = 0;
        }
 
-       dba::transaction();
-
-       $r = q("INSERT INTO `item` (`guid`, `extid`, `uid`,`type`,`wall`,`gravity`, `network`, `contact-id`,
-                                       `owner-name`,`owner-link`,`owner-avatar`, `owner-id`,
-                                       `author-name`, `author-link`, `author-avatar`, `author-id`,
-                                       `created`, `edited`, `commented`, `received`, `changed`,
-                                       `uri`, `thr-parent`, `title`, `body`, `app`, `location`, `coord`,
-                                       `tag`, `inform`, `verb`, `object-type`, `postopts`,
-                                       `allow_cid`, `allow_gid`, `deny_cid`, `deny_gid`, `private`,
-                                       `pubmail`, `attach`, `bookmark`,`origin`, `moderated`, `file`,
-                                       `rendered-html`, `rendered-hash`, `gcontact-id`, `object`,
-                                       `parent`, `parent-uri`, `plink`, `last-child`, `visible`)
-               VALUES('%s', '%s', %d, '%s', %d, %d, '%s', %d,
-                       '%s', '%s', '%s', %d,
-                       '%s', '%s', '%s', %d,
-                       '%s', '%s', '%s', '%s', '%s',
-                       '%s', '%s', '%s', '%s', '%s', '%s', '%s',
-                       '%s', '%s', '%s', '%s', '%s',
-                       '%s', '%s', '%s', '%s', %d,
-                       %d, '%s', %d, %d, %d, '%s',
-                       '%s', '%s', %d, '%s',
-                       %d, '%s', '%s', %d, %d)",
-               dbesc($datarray['guid']),
-               dbesc($datarray['extid']),
-               intval($datarray['uid']),
-               dbesc($datarray['type']),
-               intval($datarray['wall']),
-               intval($datarray['gravity']),
-               dbesc($datarray['network']),
-               intval($datarray['contact-id']),
-               dbesc($datarray['owner-name']),
-               dbesc($datarray['owner-link']),
-               dbesc($datarray['owner-avatar']),
-               intval($datarray['owner-id']),
-               dbesc($datarray['author-name']),
-               dbesc($datarray['author-link']),
-               dbesc($datarray['author-avatar']),
-               intval($datarray['author-id']),
-               dbesc($datarray['created']),
-               dbesc($datarray['edited']),
-               dbesc($datarray['commented']),
-               dbesc($datarray['received']),
-               dbesc($datarray['changed']),
-               dbesc($datarray['uri']),
-               dbesc($datarray['thr-parent']),
-               dbesc($datarray['title']),
-               dbesc($datarray['body']),
-               dbesc($datarray['app']),
-               dbesc($datarray['location']),
-               dbesc($datarray['coord']),
-               dbesc($datarray['tag']),
-               dbesc($datarray['inform']),
-               dbesc($datarray['verb']),
-               dbesc($datarray['object-type']),
-               dbesc($datarray['postopts']),
-               dbesc($datarray['allow_cid']),
-               dbesc($datarray['allow_gid']),
-               dbesc($datarray['deny_cid']),
-               dbesc($datarray['deny_gid']),
-               intval($datarray['private']),
-               intval($datarray['pubmail']),
-               dbesc($datarray['attach']),
-               intval($datarray['bookmark']),
-               intval($datarray['origin']),
-               intval($datarray['moderated']),
-               dbesc($datarray['file']),
-               dbesc($datarray['rendered-html']),
-               dbesc($datarray['rendered-hash']),
-               intval($datarray['gcontact-id']),
-               dbesc($datarray['object']),
-               intval($datarray['parent']),
-               dbesc($datarray['parent-uri']),
-               dbesc($datarray['plink']),
-               intval($datarray['last-child']),
-               intval($datarray['visible'])
-       );
-
-       if (DBM::is_result($r)) {
-               $post_id = dba::lastInsertId();
-       } else {
-               logger('mod_item: unable to create post.');
-               $post_id = 0;
-       }
+       unset($datarray['edit']);
+       unset($datarray['self']);
+       unset($datarray['api_source']);
 
-       if ($post_id == 0) {
-               dba::commit();
-               logger('mod_item: unable to retrieve post that was just stored.');
-               notice(t('System error. Post not saved.') . EOL);
+       $post_id = Item::insert($datarray);
+
+       if (!$post_id) {
+               logger("Item wasn't stored.");
                goaway($return_path);
-               // NOTREACHED
        }
 
-       logger('mod_item: saved item ' . $post_id);
-
-       $datarray["id"] = $post_id;
+       $datarray = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 
-       item_set_last_item($datarray);
+       if (!DBM::is_result($datarray)) {
+               logger("Item with id ".$post_id." couldn't be fetched.");
+               goaway($return_path);
+       }
 
        // update filetags in pconfig
-       file_tag_update_pconfig($uid,$categories_old,$categories_new,'category');
+       file_tag_update_pconfig($uid, $categories_old, $categories_new, 'category');
 
+       // These notifications are sent if someone else is commenting other your wall
        if ($parent) {
-
-               // This item is the last leaf and gets the comment box, clear any ancestors
-               $r = q("UPDATE `item` SET `last-child` = 0, `changed` = '%s' WHERE `parent` = %d AND `last-child` AND `id` != %d",
-                       dbesc(datetime_convert()),
-                       intval($parent),
-                       intval($post_id)
-               );
-
-               // update the commented timestamp on the parent
-               q("UPDATE `item` SET `visible` = 1, `commented` = '%s', `changed` = '%s' WHERE `id` = %d",
-                       dbesc(datetime_convert()),
-                       dbesc(datetime_convert()),
-                       intval($parent)
-               );
-
                if ($contact_record != $author) {
-                       notification(array(
+                       notification([
                                'type'         => NOTIFY_COMMENT,
                                'notify_flags' => $user['notify-flags'],
                                'language'     => $user['language'],
@@ -983,23 +766,14 @@ function item_post(App $a) {
                                'otype'        => 'item',
                                'parent'       => $parent,
                                'parent_uri'   => $parent_item['uri']
-                       ));
-
+                       ]);
                }
 
-
                // Store the comment signature information in case we need to relay to Diaspora
                Diaspora::storeCommentSignature($datarray, $author, ($self ? $user['prvkey'] : false), $post_id);
-
        } else {
-               $parent = $post_id;
-
-               $r = q("UPDATE `item` SET `parent` = %d WHERE `id` = %d",
-                       intval($parent),
-                       intval($post_id));
-
                if (($contact_record != $author) && !count($forum_contact)) {
-                       notification(array(
+                       notification([
                                'type'         => NOTIFY_WALL,
                                'notify_flags' => $user['notify-flags'],
                                'language'     => $user['language'],
@@ -1013,63 +787,51 @@ function item_post(App $a) {
                                'source_photo' => $datarray['author-avatar'],
                                'verb'         => ACTIVITY_POST,
                                'otype'        => 'item'
-                       ));
+                       ]);
                }
        }
 
-       call_hooks('post_local_end', $datarray);
+       Addon::callHooks('post_local_end', $datarray);
 
        if (strlen($emailcc) && $profile_uid == local_user()) {
                $erecips = explode(',', $emailcc);
                if (count($erecips)) {
                        foreach ($erecips as $recip) {
                                $addr = trim($recip);
-                               if (! strlen($addr)) {
+                               if (!strlen($addr)) {
                                        continue;
                                }
-                               $disclaimer = '<hr />' . sprintf( t('This message was sent to you by %s, a member of the Friendica social network.'), $a->user['username'])
+                               $disclaimer = '<hr />' . L10n::t('This message was sent to you by %s, a member of the Friendica social network.', $a->user['username'])
                                        . '<br />';
-                               $disclaimer .= sprintf( t('You may visit them online at %s'), System::baseUrl() . '/profile/' . $a->user['nickname']) . EOL;
-                               $disclaimer .= t('Please contact the sender by replying to this post if you do not wish to receive these messages.') . EOL;
+                               $disclaimer .= L10n::t('You may visit them online at %s', System::baseUrl() . '/profile/' . $a->user['nickname']) . EOL;
+                               $disclaimer .= L10n::t('Please contact the sender by replying to this post if you do not wish to receive these messages.') . EOL;
                                if (!$datarray['title']=='') {
                                        $subject = Email::encodeHeader($datarray['title'], 'UTF-8');
                                } else {
-                                       $subject = Email::encodeHeader('[Friendica]' . ' ' . sprintf( t('%s posted an update.'), $a->user['username']), 'UTF-8');
+                                       $subject = Email::encodeHeader('[Friendica]' . ' ' . L10n::t('%s posted an update.', $a->user['username']), 'UTF-8');
                                }
                                $link = '<a href="' . System::baseUrl() . '/profile/' . $a->user['nickname'] . '"><img src="' . $author['thumb'] . '" alt="' . $a->user['username'] . '" /></a><br /><br />';
                                $html    = prepare_body($datarray);
                                $message = '<html><body>' . $link . $html . $disclaimer . '</body></html>';
-                               include_once 'include/html2plain.php';
-                               $params = array (
+                               $params =  [
                                        'fromName' => $a->user['username'],
                                        'fromEmail' => $a->user['email'],
                                        'toEmail' => $addr,
                                        'replyTo' => $a->user['email'],
                                        'messageSubject' => $subject,
                                        'htmlVersion' => $message,
-                                       'textVersion' => html2plain($html.$disclaimer)
-                               );
+                                       'textVersion' => Friendica\Content\Text\HTML::toPlaintext($html.$disclaimer)
+                               ];
                                Emailer::send($params);
                        }
                }
        }
 
-       if ($post_id == $parent) {
-               add_thread($post_id);
-       } else {
-               update_thread($parent, true);
-       }
-
-       dba::commit();
-
-       create_tags_from_item($post_id);
-       create_files_from_item($post_id);
-
        // Insert an item entry for UID=0 for global entries.
        // We now do it in the background to save some time.
        // This is important in interactive environments like the frontend or the API.
        // We don't fork a new process since this is done anyway with the following command
-       Worker::add(array('priority' => PRIORITY_HIGH, 'dont_fork' => true), "CreateShadowEntry", $post_id);
+       Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], "CreateShadowEntry", $post_id);
 
        // Call the background process that is delivering the item to the receivers
        Worker::add(PRIORITY_HIGH, "Notifier", $notify_type, $post_id);
@@ -1091,7 +853,7 @@ function item_post_return($baseurl, $api_source, $return_path) {
                goaway($return_path);
        }
 
-       $json = array('success' => 1);
+       $json = ['success' => 1];
        if (x($_REQUEST, 'jsreload') && strlen($_REQUEST['jsreload'])) {
                $json['reload'] = $baseurl . '/' . $_REQUEST['jsreload'];
        }
@@ -1106,7 +868,7 @@ function item_post_return($baseurl, $api_source, $return_path) {
 
 function item_content(App $a) {
 
-       if ((! local_user()) && (! remote_user())) {
+       if (!local_user() && !remote_user()) {
                return;
        }
 
@@ -1114,10 +876,14 @@ function item_content(App $a) {
 
        $o = '';
        if (($a->argc == 3) && ($a->argv[1] === 'drop') && intval($a->argv[2])) {
-               $o = drop_item($a->argv[2], !is_ajax());
+               if (is_ajax()) {
+                       $o = Item::deleteForUser(['id' => $a->argv[2]], local_user());
+               } else {
+                       $o = drop_item($a->argv[2]);
+               }
                if (is_ajax()) {
                        // ajax return: [<item id>, 0 (no perm) | <owner id>]
-                       echo json_encode(array(intval($a->argv[2]), intval($o)));
+                       echo json_encode([intval($a->argv[2]), intval($o)]);
                        killme();
                }
        }
@@ -1160,22 +926,10 @@ function handle_tag(App $a, &$body, &$inform, &$str_tags, $profile_uid, $tag, $n
                        // Checking for the alias that is used for OStatus
                        $pattern = "/[@!]\[url\=(.*?)\](.*?)\[\/url\]/ism";
                        if (preg_match($pattern, $tag, $matches)) {
-
-                               $r = q("SELECT `alias`, `name` FROM `contact` WHERE `nurl` = '%s' AND `alias` != '' AND `uid` = 0",
-                                       normalise_link($matches[1]));
-                               if (!DBM::is_result($r)) {
-                                       $r = q("SELECT `alias`, `name` FROM `gcontact` WHERE `nurl` = '%s' AND `alias` != ''",
-                                               normalise_link($matches[1]));
-                               }
-                               if (DBM::is_result($r)) {
-                                       $data = $r[0];
-                               } else {
-                                       $data = Probe::uri($matches[1]);
-                               }
-
+                               $data = Contact::getDetailsByURL($matches[1]);
                                if ($data["alias"] != "") {
-                                       $newtag = '@[url=' . $data["alias"] . ']' . $data["name"] . '[/url]';
-                                       if (!stristr($str_tags, $newtag)) {
+                                       $newtag = '@[url=' . $data["alias"] . ']' . $data["nick"] . '[/url]';
+                                       if (!stripos($str_tags, '[url=' . $data["alias"] . ']')) {
                                                if (strlen($str_tags)) {
                                                        $str_tags .= ',';
                                                }
@@ -1196,124 +950,68 @@ function handle_tag(App $a, &$body, &$inform, &$str_tags, $profile_uid, $tag, $n
                $name = $nameparts[0];
 
                // Try to detect the contact in various ways
-               if ((strpos($name, '@')) || (strpos($name, 'http://'))) {
-                       // Is it in format @user@domain.tld or @http://domain.tld/...?
-
-                       // First check the contact table for the address
-                       $r = q("SELECT `id`, `url`, `nick`, `name`, `alias`, `network`, `notify`, `forum`, `prv` FROM `contact`
-                               WHERE `addr` = '%s' AND `uid` = %d AND
-                                       (`network` != '%s' OR (`notify` != '' AND `alias` != ''))
-                               LIMIT 1",
-                                       dbesc($name),
-                                       intval($profile_uid),
-                                       dbesc(NETWORK_OSTATUS)
-                       );
-
-                       // Then check in the contact table for the url
-                       if (!DBM::is_result($r)) {
-                               $r = q("SELECT `id`, `url`, `nick`, `name`, `alias`, `network`, `notify`, `forum`, `prv` FROM `contact`
-                                       WHERE `nurl` = '%s' AND `uid` = %d AND
-                                               (`network` != '%s' OR (`notify` != '' AND `alias` != ''))
-                                       LIMIT 1",
-                                               dbesc(normalise_link($name)),
-                                               intval($profile_uid),
-                                               dbesc(NETWORK_OSTATUS)
-                               );
-                       }
-
-                       // Then check in the global contacts for the address
-                       if (!DBM::is_result($r)) {
-                               $r = q("SELECT `url`, `nick`, `name`, `alias`, `network`, `notify` FROM `gcontact`
-                                       WHERE `addr` = '%s' AND (`network` != '%s' OR (`notify` != '' AND `alias` != ''))
-                                       LIMIT 1",
-                                               dbesc($name),
-                                               dbesc(NETWORK_OSTATUS)
-                               );
-                       }
-
-                       // Then check in the global contacts for the url
-                       if (!DBM::is_result($r)) {
-                               $r = q("SELECT `url`, `nick`, `name`, `alias`, `network`, `notify` FROM `gcontact`
-                                       WHERE `nurl` = '%s' AND (`network` != '%s' OR (`notify` != '' AND `alias` != ''))
-                                       LIMIT 1",
-                                               dbesc(normalise_link($name)),
-                                               dbesc(NETWORK_OSTATUS)
-                               );
-                       }
-
-                       if (!DBM::is_result($r)) {
-                               $probed = Probe::uri($name);
-                               if ($result['network'] != NETWORK_PHANTOM) {
-                                       GlobalContact::update($probed);
-                                       $r = q("SELECT `url`, `name`, `nick`, `network`, `alias`, `notify` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
-                                               dbesc(normalise_link($probed["url"])));
-                               }
-                       }
+               if (strpos($name, 'http://')) {
+                       // At first we have to ensure that the contact exists
+                       Contact::getIdForURL($name);
+
+                       // Now we should have something
+                       $contact = Contact::getDetailsByURL($name);
+               } elseif (strpos($name, '@')) {
+                       // This function automatically probes when no entry was found
+                       $contact = Contact::getDetailsByAddr($name);
                } else {
-                       $r = false;
+                       $contact = false;
+                       $fields = ['id', 'url', 'nick', 'name', 'alias', 'network'];
+
                        if (strrpos($name, '+')) {
                                // Is it in format @nick+number?
                                $tagcid = intval(substr($name, strrpos($name, '+') + 1));
+                               $contact = dba::selectFirst('contact', $fields, ['id' => $tagcid, 'uid' => $profile_uid]);
+                       }
 
-                               $r = q("SELECT `id`, `url`, `nick`, `name`, `alias`, `network` FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
-                                               intval($tagcid),
-                                               intval($profile_uid)
-                               );
+                       // select someone by nick or attag in the current network
+                       if (!DBM::is_result($contact) && ($network != "")) {
+                               $condition = ["(`nick` = ? OR `attag` = ?) AND `network` = ? AND `uid` = ?",
+                                               $name, $name, $network, $profile_uid];
+                               $contact = dba::selectFirst('contact', $fields, $condition);
                        }
 
-                       // select someone by attag or nick and the name passed in the current network
-                       if(!DBM::is_result($r) && ($network != ""))
-                               $r = q("SELECT `id`, `url`, `nick`, `name`, `alias`, `network` FROM `contact` WHERE `attag` = '%s' OR `nick` = '%s' AND `network` = '%s' AND `uid` = %d ORDER BY `attag` DESC LIMIT 1",
-                                               dbesc($name),
-                                               dbesc($name),
-                                               dbesc($network),
-                                               intval($profile_uid)
-                               );
-
-                       //select someone from this user's contacts by name in the current network
-                       if (!DBM::is_result($r) && ($network != "")) {
-                               $r = q("SELECT `id`, `url`, `nick`, `name`, `alias`, `network` FROM `contact` WHERE `name` = '%s' AND `network` = '%s' AND `uid` = %d LIMIT 1",
-                                               dbesc($name),
-                                               dbesc($network),
-                                               intval($profile_uid)
-                               );
+                       //select someone by name in the current network
+                       if (!DBM::is_result($contact) && ($network != "")) {
+                               $condition = ['name' => $name, 'network' => $network, 'uid' => $profile_uid];
+                               $contact = dba::selectFirst('contact', $fields, $condition);
                        }
 
-                       // select someone by attag or nick and the name passed in
-                       if(!DBM::is_result($r)) {
-                               $r = q("SELECT `id`, `url`, `nick`, `name`, `alias`, `network` FROM `contact` WHERE `attag` = '%s' OR `nick` = '%s' AND `uid` = %d ORDER BY `attag` DESC LIMIT 1",
-                                               dbesc($name),
-                                               dbesc($name),
-                                               intval($profile_uid)
-                               );
+                       // select someone by nick or attag in any network
+                       if (!DBM::is_result($contact)) {
+                               $condition = ["(`nick` = ? OR `attag` = ?) AND `uid` = ?", $name, $name, $profile_uid];
+                               $contact = dba::selectFirst('contact', $fields, $condition);
                        }
 
-                       // select someone from this user's contacts by name
-                       if(!DBM::is_result($r)) {
-                               $r = q("SELECT `id`, `url`, `nick`, `name`, `alias`, `network` FROM `contact` WHERE `name` = '%s' AND `uid` = %d LIMIT 1",
-                                               dbesc($name),
-                                               intval($profile_uid)
-                               );
+                       // select someone by name in any network
+                       if (!DBM::is_result($contact)) {
+                               $condition = ['name' => $name, 'uid' => $profile_uid];
+                               $contact = dba::selectFirst('contact', $fields, $condition);
                        }
                }
 
-               if (DBM::is_result($r)) {
-                       if (strlen($inform) && (isset($r[0]["notify"]) || isset($r[0]["id"]))) {
+               if ($contact) {
+                       if (strlen($inform) && (isset($contact["notify"]) || isset($contact["id"]))) {
                                $inform .= ',';
                        }
 
-                       if (isset($r[0]["id"])) {
-                               $inform .= 'cid:' . $r[0]["id"];
-                       } elseif (isset($r[0]["notify"])) {
-                               $inform  .= $r[0]["notify"];
+                       if (isset($contact["id"])) {
+                               $inform .= 'cid:' . $contact["id"];
+                       } elseif (isset($contact["notify"])) {
+                               $inform  .= $contact["notify"];
                        }
 
-                       $profile = $r[0]["url"];
-                       $alias   = $r[0]["alias"];
-                       $newname = $r[0]["nick"];
-                       if (($newname == "") || (($r[0]["network"] != NETWORK_OSTATUS) && ($r[0]["network"] != NETWORK_TWITTER)
-                               && ($r[0]["network"] != NETWORK_STATUSNET) && ($r[0]["network"] != NETWORK_APPNET))) {
-                               $newname = $r[0]["name"];
+                       $profile = $contact["url"];
+                       $alias   = $contact["alias"];
+                       $newname = $contact["nick"];
+                       if (($newname == "") || (($contact["network"] != NETWORK_OSTATUS) && ($contact["network"] != NETWORK_TWITTER)
+                               && ($contact["network"] != NETWORK_STATUSNET) && ($contact["network"] != NETWORK_APPNET))) {
+                               $newname = $contact["name"];
                        }
                }
 
@@ -1325,7 +1023,7 @@ function handle_tag(App $a, &$body, &$inform, &$str_tags, $profile_uid, $tag, $n
                        $newtag = $tag_type.'[url=' . $profile . ']' . $newname . '[/url]';
                        $body = str_replace($tag_type . $name, $newtag, $body);
                        // append tag to str_tags
-                       if (! stristr($str_tags, $newtag)) {
+                       if (!stristr($str_tags, $newtag)) {
                                if (strlen($str_tags)) {
                                        $str_tags .= ',';
                                }
@@ -1338,7 +1036,7 @@ function handle_tag(App $a, &$body, &$inform, &$str_tags, $profile_uid, $tag, $n
                         */
                        if (strlen($alias)) {
                                $newtag = '@[url=' . $alias . ']' . $newname . '[/url]';
-                               if (! stristr($str_tags, $newtag)) {
+                               if (!stripos($str_tags, '[url=' . $alias . ']')) {
                                        if (strlen($str_tags)) {
                                                $str_tags .= ',';
                                        }
@@ -1348,5 +1046,5 @@ function handle_tag(App $a, &$body, &$inform, &$str_tags, $profile_uid, $tag, $n
                }
        }
 
-       return array('replaced' => $replaced, 'contact' => $r[0]);
+       return ['replaced' => $replaced, 'contact' => $contact];
 }