]> git.mxchange.org Git - friendica.git/blobdiff - mod/item.php
Merge pull request #10166 from mexon/mat/refactor-user-arguments
[friendica.git] / mod / item.php
index 17f6486f89c25172bc6b6c06d45945d416d60d9c..04e7c7c39c21240ba09915f94cfaebfb5ac3dd88 100644 (file)
@@ -1,6 +1,6 @@
 <?php
 /**
- * @copyright Copyright (C) 2020, Friendica
+ * @copyright Copyright (C) 2010-2021, the Friendica project
  *
  * @license GNU AGPL version 3 or any later version
  *
@@ -35,7 +35,6 @@ use Friendica\Content\Text\BBCode;
 use Friendica\Core\Hook;
 use Friendica\Core\Logger;
 use Friendica\Core\Protocol;
-use Friendica\Core\Renderer;
 use Friendica\Core\Session;
 use Friendica\Core\System;
 use Friendica\Core\Worker;
@@ -46,16 +45,19 @@ use Friendica\Model\Contact;
 use Friendica\Model\Conversation;
 use Friendica\Model\FileTag;
 use Friendica\Model\Item;
-use Friendica\Model\Notify\Type;
+use Friendica\Model\ItemURI;
+use Friendica\Model\Notification;
 use Friendica\Model\Photo;
+use Friendica\Model\Post;
 use Friendica\Model\Tag;
+use Friendica\Model\User;
 use Friendica\Network\HTTPException;
 use Friendica\Object\EMail\ItemCCEMail;
 use Friendica\Protocol\Activity;
 use Friendica\Protocol\Diaspora;
+use Friendica\Security\Security;
 use Friendica\Util\DateTimeFormat;
-use Friendica\Util\Security;
-use Friendica\Util\Strings;
+use Friendica\Util\ParseUrl;
 use Friendica\Worker\Delivery;
 
 function item_post(App $a) {
@@ -81,8 +83,6 @@ function item_post(App $a) {
 
        $api_source = $_REQUEST['api_source'] ?? false;
 
-       $message_id = ((!empty($_REQUEST['message_id']) && $api_source) ? strip_tags($_REQUEST['message_id']) : '');
-
        $return_path = $_REQUEST['return'] ?? '';
        $preview = intval($_REQUEST['preview'] ?? 0);
 
@@ -101,30 +101,33 @@ function item_post(App $a) {
        }
 
        // Is this a reply to something?
-       $toplevel_item_id = intval($_REQUEST['parent'] ?? 0);
+       $parent_item_id = intval($_REQUEST['parent'] ?? 0);
        $thr_parent_uri = trim($_REQUEST['parent_uri'] ?? '');
 
+       $parent_item = null;
        $toplevel_item = null;
-       $parent_user = null;
+       $toplevel_item_id = 0;
+       $toplevel_user_id = null;
 
        $objecttype = null;
        $profile_uid = ($_REQUEST['profile_uid'] ?? 0) ?: local_user();
        $posttype = ($_REQUEST['post_type'] ?? '') ?: Item::PT_ARTICLE;
 
-       if ($toplevel_item_id || $thr_parent_uri) {
-               if ($toplevel_item_id) {
-                       $toplevel_item = Item::selectFirst([], ['id' => $toplevel_item_id]);
+       if ($parent_item_id || $thr_parent_uri) {
+               if ($parent_item_id) {
+                       $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $parent_item_id]);
                } elseif ($thr_parent_uri) {
-                       $toplevel_item = Item::selectFirst([], ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
+                       $parent_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['uri' => $thr_parent_uri, 'uid' => $profile_uid]);
                }
 
                // if this isn't the top-level parent of the conversation, find it
-               if (DBA::isResult($toplevel_item)) {
+               if (DBA::isResult($parent_item)) {
                        // The URI and the contact is taken from the direct parent which needn't to be the top parent
-                       $thr_parent_uri = $toplevel_item['uri'];
+                       $thr_parent_uri = $parent_item['uri'];
+                       $toplevel_item = $parent_item;
 
-                       if ($toplevel_item['gravity'] != GRAVITY_PARENT) {
-                               $toplevel_item = Item::selectFirst([], ['id' => $toplevel_item['parent']]);
+                       if ($parent_item['gravity'] != GRAVITY_PARENT) {
+                               $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $toplevel_item['parent']]);
                        }
                }
 
@@ -142,12 +145,12 @@ function item_post(App $a) {
                        $stored = Item::storeForUserByUriId($toplevel_item['uri-id'], local_user());
                        Logger::info('Public item stored for user', ['uri-id' => $toplevel_item['uri-id'], 'uid' => $uid, 'stored' => $stored]);
                        if ($stored) {
-                               $toplevel_item = Item::selectFirst([], ['id' => $stored]);
+                               $toplevel_item = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $stored]);
                        }
                }
 
                $toplevel_item_id = $toplevel_item['id'];
-               $parent_user = $toplevel_item['uid'];
+               $toplevel_user_id = $toplevel_item['uid'];
 
                $objecttype = Activity\ObjectType::COMMENT;
        }
@@ -169,16 +172,8 @@ function item_post(App $a) {
        }
 
        // 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)) {
-               if (Item::exists(['uri' => $message_id, 'uid' => $profile_uid])) {
-                       Logger::info('Message already exists for user', ['uri' => $message_id, 'uid' => $profile_uid]);
-                       return 0;
-               }
+       if (!is_null($toplevel_user_id) && in_array($toplevel_user_id, [local_user(), 0])) {
+               $profile_uid = $toplevel_user_id;
        }
 
        // Allow commenting if it is an answer to a public post
@@ -199,11 +194,10 @@ function item_post(App $a) {
 
        // is this an edited post?
        if ($post_id > 0) {
-               $orig_post = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
+               $orig_post = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
        }
 
-       $user = DBA::selectFirst('user', [], ['uid' => $profile_uid]);
-
+       $user = User::getById($profile_uid, ['allow_cid', 'allow_gid', 'deny_cid', 'deny_gid']);
        if (!DBA::isResult($user) && !$toplevel_item_id) {
                return 0;
        }
@@ -225,12 +219,16 @@ function item_post(App $a) {
 
                $attachment_img_width  = $_REQUEST['attachment_img_width'] ??  0;
                $attachment_img_height = $_REQUEST['attachment_img_height'] ?? 0;
-               $attachment = [
-                       'type'   => $attachment_type,
-                       'title'  => $attachment_title,
-                       'text'   => $attachment_text,
-                       'url'    => $attachment_url,
-               ];
+
+               // Fetch the basic attachment data
+               $attachment = ParseUrl::getSiteinfoCached($attachment_url);
+               unset($attachment['keywords']);
+
+               // Overwrite the basic data with possible changes from the frontend
+               $attachment['type'] = $attachment_type;
+               $attachment['title'] = $attachment_title;
+               $attachment['text'] = $attachment_text;
+               $attachment['url'] = $attachment_url;
 
                if (!empty($attachment_img_src)) {
                        $attachment['images'] = [
@@ -240,6 +238,8 @@ function item_post(App $a) {
                                        'height' => $attachment_img_height
                                ]
                        ];
+               } else {
+                       unset($attachment['images']);
                }
 
                $att_bbcode = "\n" . PageInfo::getFooterFromData($attachment);
@@ -259,7 +259,7 @@ function item_post(App $a) {
                $verb              = $orig_post['verb'];
                $objecttype        = $orig_post['object-type'];
                $app               = $orig_post['app'];
-               $categories        = $orig_post['file'] ?? '';
+               $categories        = Post\Category::getTextByURIId($orig_post['uri-id'], $orig_post['uid']);
                $title             = trim($_REQUEST['title'] ?? '');
                $body              = trim($body);
                $private           = $orig_post['private'];
@@ -268,17 +268,21 @@ function item_post(App $a) {
                $guid              = $orig_post['guid'];
                $extid             = $orig_post['extid'];
        } else {
-               $str_contact_allow = '';
-               $str_group_allow   = '';
-               $str_contact_deny  = '';
-               $str_group_deny    = '';
-
-               if (($_REQUEST['visibility'] ?? '') !== 'public') {
-                       $aclFormatter = DI::aclFormatter();
-                       $str_contact_allow = isset($_REQUEST['contact_allow']) ? $aclFormatter->toString($_REQUEST['contact_allow']) : $user['allow_cid'] ?? '';
-                       $str_group_allow   = isset($_REQUEST['group_allow'])   ? $aclFormatter->toString($_REQUEST['group_allow'])   : $user['allow_gid'] ?? '';
-                       $str_contact_deny  = isset($_REQUEST['contact_deny'])  ? $aclFormatter->toString($_REQUEST['contact_deny'])  : $user['deny_cid']  ?? '';
-                       $str_group_deny    = isset($_REQUEST['group_deny'])    ? $aclFormatter->toString($_REQUEST['group_deny'])    : $user['deny_gid']  ?? '';
+               $aclFormatter = DI::aclFormatter();
+               $str_contact_allow = isset($_REQUEST['contact_allow']) ? $aclFormatter->toString($_REQUEST['contact_allow']) : $user['allow_cid'] ?? '';
+               $str_group_allow   = isset($_REQUEST['group_allow'])   ? $aclFormatter->toString($_REQUEST['group_allow'])   : $user['allow_gid'] ?? '';
+               $str_contact_deny  = isset($_REQUEST['contact_deny'])  ? $aclFormatter->toString($_REQUEST['contact_deny'])  : $user['deny_cid']  ?? '';
+               $str_group_deny    = isset($_REQUEST['group_deny'])    ? $aclFormatter->toString($_REQUEST['group_deny'])    : $user['deny_gid']  ?? '';
+
+               $visibility = $_REQUEST['visibility'] ?? '';
+               if ($visibility === 'public') {
+                       // The ACL selector introduced in version 2019.12 sends ACL input data even when the Public visibility is selected
+                       $str_contact_allow = $str_group_allow = $str_contact_deny = $str_group_deny = '';
+               } else if ($visibility === 'custom') {
+                       // Since we know from the visibility parameter the item should be private, we have to prevent the empty ACL
+                       // case that would make it public. So we always append the author's contact id to the allowed contacts.
+                       // See https://github.com/friendica/friendica/issues/9672
+                       $str_contact_allow .= $aclFormatter->toString(Contact::getPublicIdByUserId($uid));
                }
 
                $title             = trim($_REQUEST['title']    ?? '');
@@ -347,10 +351,7 @@ function item_post(App $a) {
                $filedas = FileTag::fileToArray($categories);
        }
 
-       // save old and new categories, so we can determine what needs to be deleted from pconfig
-       $categories_old = $categories;
        $categories = FileTag::listToFile(trim($_REQUEST['category'] ?? ''), 'category');
-       $categories_new = $categories;
 
        if (!empty($filedas) && is_array($filedas)) {
                // append the fileas stuff to the new categories list
@@ -469,7 +470,7 @@ function item_post(App $a) {
        /*
         * Next link in any attachment references we find in the post.
         */
-       $match = false;
+       $match = [];
 
        /// @todo these lines should be moved to Model/Attach (Once it exists)
        if (!$preview && preg_match_all("/\[attachment\](.*?)\[\/attachment\]/", $body, $match)) {
@@ -496,6 +497,7 @@ function item_post(App $a) {
        // embedded bookmark or attachment in post? set bookmark flag
 
        $data = BBCode::getAttachmentData($body);
+       $match = [];
        if ((preg_match_all("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $body, $match, PREG_SET_ORDER) || isset($data["type"]))
                && ($posttype != Item::PT_PERSONAL_NOTE)) {
                $posttype = Item::PT_PAGE;
@@ -522,7 +524,7 @@ function item_post(App $a) {
        }
 
        $attachments = '';
-       $match = false;
+       $match = [];
 
        if (preg_match_all('/(\[attachment\]([0-9]+)\[\/attachment\])/',$body,$match)) {
                foreach ($match[2] as $mtch) {
@@ -532,9 +534,8 @@ function item_post(App $a) {
                                if (strlen($attachments)) {
                                        $attachments .= ',';
                                }
-                               $attachments .= '[attach]href="' . DI::baseUrl() . '/attach/' . $attachment['id'] .
-                                               '" length="' . $attachment['filesize'] . '" type="' . $attachment['filetype'] .
-                                               '" title="' . ($attachment['filename'] ? $attachment['filename'] : '') . '"[/attach]';
+                               $attachments .= Post\Media::getAttachElement(DI::baseUrl() . '/attach/' . $attachment['id'],
+                                       $attachment['filesize'], $attachment['filetype'], $attachment['filename'] ?? '');
                        }
                        $body = str_replace($match[1],'',$body);
                }
@@ -560,7 +561,7 @@ function item_post(App $a) {
                $origin = $_REQUEST['origin'];
        }
 
-       $uri = ($message_id ? $message_id : Item::newURI($api_source ? $profile_uid : $uid, $guid));
+       $uri = Item::newURI($api_source ? $profile_uid : $uid, $guid);
 
        // Fallback so that we alway have a parent uri
        if (!$thr_parent_uri || !$toplevel_item_id) {
@@ -607,14 +608,14 @@ function item_post(App $a) {
        $datarray['pubmail']       = $pubmail_enabled;
        $datarray['attach']        = $attachments;
 
-       // 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['thr-parent']    = $thr_parent_uri;
 
        $datarray['postopts']      = $postopts;
        $datarray['origin']        = $origin;
-       $datarray['moderated']     = false;
        $datarray['object']        = $object;
 
+       $datarray["uri-id"]        = ItemURI::getIdByURI($datarray["uri"]);
+
        /*
         * These fields are for the convenience of addons...
         * 'self' if true indicates the owner is posting on their own wall
@@ -627,9 +628,10 @@ function item_post(App $a) {
        $datarray['api_source'] = $api_source;
 
        // This field is for storing the raw conversation data
-       $datarray['protocol'] = Conversation::PARCEL_DFRN;
+       $datarray['protocol'] = Conversation::PARCEL_DIRECT;
+       $datarray['direction'] = Conversation::PUSH;
 
-       $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $datarray['parent-uri']]);
+       $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $datarray['thr-parent']]);
        if (DBA::isResult($conversation)) {
                if ($conversation['conversation-uri'] != '') {
                        $datarray['conversation-uri'] = $conversation['conversation-uri'];
@@ -659,7 +661,6 @@ function item_post(App $a) {
                // doesn't have an ID.
                $datarray["id"] = -1;
                $datarray["uri-id"] = -1;
-               $datarray["item_id"] = -1;
                $datarray["author-network"] = Protocol::DFRN;
 
                $o = conversation($a, [array_merge($contact_record, $datarray)], 'search', false, true);
@@ -700,9 +701,6 @@ function item_post(App $a) {
 
                Item::update($fields, ['id' => $post_id]);
 
-               // update filetags in pconfig
-               FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
-
                if ($return_path) {
                        DI::baseUrl()->redirect($return_path);
                }
@@ -732,7 +730,7 @@ function item_post(App $a) {
                throw new HTTPException\InternalServerErrorException(DI::l10n()->t('Item wasn\'t stored.'));
        }
 
-       $datarray = Item::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
+       $datarray = Post::selectFirst(Item::ITEM_FIELDLIST, ['id' => $post_id]);
 
        if (!DBA::isResult($datarray)) {
                Logger::error('Item couldn\'t be fetched.', ['post_id' => $post_id]);
@@ -749,44 +747,27 @@ function item_post(App $a) {
                Tag::createImplicitMentions($datarray['uri-id'], $datarray['thr-parent-id']);
        }
 
-       // update filetags in pconfig
-       FileTag::updatePconfig($uid, $categories_old, $categories_new, 'category');
-
        // These notifications are sent if someone else is commenting other your wall
        if ($contact_record != $author) {
                if ($toplevel_item_id) {
                        notification([
-                               'type'         => Type::COMMENT,
-                               'notify_flags' => $user['notify-flags'],
-                               'language'     => $user['language'],
-                               'to_name'      => $user['username'],
-                               'to_email'     => $user['email'],
-                               'uid'          => $user['uid'],
-                               'item'         => $datarray,
-                               'link'         => DI::baseUrl().'/display/'.urlencode($datarray['guid']),
-                               'source_name'  => $datarray['author-name'],
-                               'source_link'  => $datarray['author-link'],
-                               'source_photo' => $datarray['author-avatar'],
-                               'verb'         => Activity::POST,
-                               'otype'        => 'item',
-                               'parent'       => $toplevel_item_id,
-                               'parent_uri'   => $toplevel_item['uri']
+                               'type'  => Notification\Type::COMMENT,
+                               'otype' => Notification\ObjectType::ITEM,
+                               'verb'  => Activity::POST,
+                               'uid'   => $profile_uid,
+                               'cid'   => $datarray['author-id'],
+                               'item'  => $datarray,
+                               'link'  => DI::baseUrl() . '/display/' . urlencode($datarray['guid']),
                        ]);
                } elseif (empty($forum_contact)) {
                        notification([
-                               'type'         => Type::WALL,
-                               'notify_flags' => $user['notify-flags'],
-                               'language'     => $user['language'],
-                               'to_name'      => $user['username'],
-                               'to_email'     => $user['email'],
-                               'uid'          => $user['uid'],
-                               'item'         => $datarray,
-                               'link'         => DI::baseUrl().'/display/'.urlencode($datarray['guid']),
-                               'source_name'  => $datarray['author-name'],
-                               'source_link'  => $datarray['author-link'],
-                               'source_photo' => $datarray['author-avatar'],
-                               'verb'         => Activity::POST,
-                               'otype'        => 'item'
+                               'type'  => Notification\Type::WALL,
+                               'otype' => Notification\ObjectType::ITEM,
+                               'verb'  => Activity::POST,
+                               'uid'   => $profile_uid,
+                               'cid'   => $datarray['author-id'],
+                               'item'  => $datarray,
+                               'link'  => DI::baseUrl() . '/display/' . urlencode($datarray['guid']),
                        ]);
                }
        }
@@ -807,16 +788,10 @@ function item_post(App $a) {
                }
        }
 
-       // 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(['priority' => PRIORITY_HIGH, 'dont_fork' => true], "CreateShadowEntry", $post_id);
-
        // When we are doing some forum posting via ! we have to start the notifier manually.
        // These kind of posts don't initiate the notifier call in the item class.
        if ($only_to_forum) {
-               Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => false], "Notifier", Delivery::POST, $post_id);
+               Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => false], "Notifier", Delivery::POST, (int)$datarray['uri-id'], (int)$datarray['uid']);
        }
 
        Logger::info('post_complete');
@@ -852,24 +827,45 @@ function item_post_return($baseurl, $api_source, $return_path)
 function item_content(App $a)
 {
        if (!Session::isAuthenticated()) {
-               return;
+               throw new HTTPException\UnauthorizedException();
        }
 
-       $o = '';
+       $args = DI::args();
 
-       if (($a->argc >= 3) && ($a->argv[1] === 'drop') && intval($a->argv[2])) {
-               if (DI::mode()->isAjax()) {
-                       Item::deleteForUser(['id' => $a->argv[2]], local_user());
-                       // ajax return: [<item id>, 0 (no perm) | <owner id>]
-                       System::jsonExit([intval($a->argv[2]), local_user()]);
-               } else {
-                       if (!empty($a->argv[3])) {
-                               $o = drop_item($a->argv[2], $a->argv[3]);
+       if (!$args->has(3)) {
+               throw new HTTPException\BadRequestException();
+       }
+
+       $o = '';
+       switch ($args->get(1)) {
+               case 'drop':
+                       if (DI::mode()->isAjax()) {
+                               Item::deleteForUser(['id' => $args->get(2)], local_user());
+                               // ajax return: [<item id>, 0 (no perm) | <owner id>]
+                               System::jsonExit([intval($args->get(2)), local_user()]);
+                       } else {
+                               if (!empty($args->get(3))) {
+                                       $o = drop_item($args->get(2), $args->get(3));
+                               } else {
+                                       $o = drop_item($args->get(2));
+                               }
                        }
-                       else {
-                               $o = drop_item($a->argv[2]);
+                       break;
+               case 'block':
+                       $item = Post::selectFirstForUser(local_user(), ['guid', 'author-id', 'parent', 'gravity'], ['id' => $args->get(2)]);
+                       if (empty($item['author-id'])) {
+                               throw new HTTPException\NotFoundException('Item not found');
                        }
-               }
+
+                       Contact\User::setBlocked($item['author-id'], local_user(), true);
+
+                       if (DI::mode()->isAjax()) {
+                               // ajax return: [<item id>, 0 (no perm) | <owner id>]
+                               System::jsonExit([intval($args->get(2)), local_user()]);
+                       } else {
+                               item_redirect_after_action($item, $args->get(3));
+                       }
+                       break;
        }
 
        return $o;
@@ -885,7 +881,7 @@ function drop_item(int $id, string $return = '')
 {
        // locate item to be deleted
        $fields = ['id', 'uid', 'guid', 'contact-id', 'deleted', 'gravity', 'parent'];
-       $item = Item::selectFirstForUser(local_user(), $fields, ['id' => $id]);
+       $item = Post::selectFirstForUser(local_user(), $fields, ['id' => $id]);
 
        if (!DBA::isResult($item)) {
                notice(DI::l10n()->t('Item not found.'));
@@ -904,39 +900,10 @@ function drop_item(int $id, string $return = '')
        }
 
        if ((local_user() == $item['uid']) || $contact_id) {
-               if (!empty($item['parent'])) {
-                       $parentitem = Item::selectFirstForUser(local_user(), ['guid'], ['id' => $item['parent']]);
-               }
-
                // delete the item
                Item::deleteForUser(['id' => $item['id']], local_user());
 
-               $return_url = hex2bin($return);
-
-               // removes update_* from return_url to ignore Ajax refresh
-               $return_url = str_replace("update_", "", $return_url);
-
-               // Check if delete a comment
-               if ($item['gravity'] == GRAVITY_COMMENT) {
-                       // Return to parent guid
-                       if (!empty($parentitem)) {
-                               DI::baseUrl()->redirect('display/' . $parentitem['guid']);
-                               //NOTREACHED
-                       } // In case something goes wrong
-                       else {
-                               DI::baseUrl()->redirect('network');
-                               //NOTREACHED
-                       }
-               } else {
-                       // if unknown location or deleting top level post called from display
-                       if (empty($return_url) || strpos($return_url, 'display') !== false) {
-                               DI::baseUrl()->redirect('network');
-                               //NOTREACHED
-                       } else {
-                               DI::baseUrl()->redirect($return_url);
-                               //NOTREACHED
-                       }
-               }
+               item_redirect_after_action($item, $return);
        } else {
                notice(DI::l10n()->t('Permission denied.'));
                DI::baseUrl()->redirect('display/' . $item['guid']);
@@ -945,3 +912,37 @@ function drop_item(int $id, string $return = '')
 
        return '';
 }
+
+function item_redirect_after_action($item, $returnUrlHex)
+{
+       $return_url = hex2bin($returnUrlHex);
+
+       // removes update_* from return_url to ignore Ajax refresh
+       $return_url = str_replace("update_", "", $return_url);
+
+       // Check if delete a comment
+       if ($item['gravity'] == GRAVITY_COMMENT) {
+               if (!empty($item['parent'])) {
+                       $parentitem = Post::selectFirstForUser(local_user(), ['guid'], ['id' => $item['parent']]);
+               }
+
+               // Return to parent guid
+               if (!empty($parentitem)) {
+                       DI::baseUrl()->redirect('display/' . $parentitem['guid']);
+                       //NOTREACHED
+               } // In case something goes wrong
+               else {
+                       DI::baseUrl()->redirect('network');
+                       //NOTREACHED
+               }
+       } else {
+               // if unknown location or deleting top level post called from display
+               if (empty($return_url) || strpos($return_url, 'display') !== false) {
+                       DI::baseUrl()->redirect('network');
+                       //NOTREACHED
+               } else {
+                       DI::baseUrl()->redirect($return_url);
+                       //NOTREACHED
+               }
+       }
+}