]> git.mxchange.org Git - friendica.git/blobdiff - src/Model/Item.php
"MIRROR_FORWARDED" is no more
[friendica.git] / src / Model / Item.php
index acd2360ef8550efbad433370b0d8e5b6c1901982..911e4216f0a70ea7c7d13a81ab6b1e4e6fab2fe9 100644 (file)
@@ -27,7 +27,6 @@ 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\Model\Tag;
 use Friendica\Core\Worker;
@@ -93,7 +92,7 @@ class Item
                'commented', 'created', 'edited', 'received', 'verb', 'object-type', 'postopts', 'plink',
                'wall', 'private', 'starred', 'origin', 'parent-origin', 'title', 'body', 'language',
                'content-warning', 'location', 'coord', 'app', 'rendered-hash', 'rendered-html', 'object',
-               'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'mention', 'global',
+               'quote-uri', 'quote-uri-id', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'mention', 'global',
                'author-id', 'author-link', 'author-name', 'author-avatar', 'author-network', 'author-updated', 'author-gsid', 'author-addr', 'author-uri-id',
                'owner-id', 'owner-link', 'owner-name', 'owner-avatar', 'owner-network', 'owner-contact-type', 'owner-updated',
                'causer-id', 'causer-link', 'causer-name', 'causer-avatar', 'causer-contact-type', 'causer-network',
@@ -113,9 +112,9 @@ class Item
                        'private', 'title', 'body', 'raw-body', 'location', 'coord', 'app',
                        'inform', 'deleted', 'extid', 'post-type', 'post-reason', 'gravity',
                        'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid',
-                       'author-id', 'author-link', 'author-name', 'author-avatar', 'owner-id', 'owner-link', 'contact-uid',
+                       'author-id', 'author-addr', 'author-link', 'author-name', 'author-avatar', 'owner-id', 'owner-link', 'contact-uid',
                        'signed_text', 'network', 'wall', 'contact-id', 'plink', 'origin',
-                       'thr-parent-id', 'parent-uri-id', 'postopts', 'pubmail',
+                       'thr-parent-id', 'parent-uri-id', 'quote-uri', 'quote-uri-id', 'postopts', 'pubmail',
                        'event-created', 'event-edited', 'event-start', 'event-finish',
                        'event-summary', 'event-desc', 'event-location', 'event-type',
                        'event-nofinish', 'event-ignore', 'event-id'];
@@ -123,7 +122,7 @@ class Item
        // All fields in the item table
        const ITEM_FIELDLIST = ['id', 'uid', 'parent', 'uri', 'parent-uri', 'thr-parent',
                        'guid', 'uri-id', 'parent-uri-id', 'thr-parent-id', 'conversation', 'vid',
-                       'contact-id', 'wall', 'gravity', 'extid', 'psid',
+                       'quote-uri', 'quote-uri-id', 'contact-id', 'wall', 'gravity', 'extid', 'psid',
                        'created', 'edited', 'commented', 'received', 'changed', 'verb',
                        'postopts', 'plink', 'resource-id', 'event-id', 'inform',
                        'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'post-type', 'post-reason',
@@ -142,10 +141,17 @@ class Item
                Activity::FOLLOW,
                Activity::ANNOUNCE];
 
+       // Privacy levels
        const PUBLIC = 0;
        const PRIVATE = 1;
        const UNLISTED = 2;
 
+       // Item weight for query ordering
+       const GRAVITY_PARENT   = 0;
+       const GRAVITY_ACTIVITY = 3;
+       const GRAVITY_COMMENT  = 6;
+       const GRAVITY_UNKNOWN  = 9;
+
        /**
         * Update existing item entries
         *
@@ -191,12 +197,20 @@ class Item
 
                Logger::info('Updating per single row method', ['fields' => $fields, 'condition' => $condition]);
 
-               $items = Post::select(['id', 'origin', 'uri-id', 'uid', 'author-network'], $condition);
+               $items = Post::select(['id', 'origin', 'uri-id', 'uid', 'author-network', 'quote-uri-id'], $condition);
 
                $notify_items = [];
 
                while ($item = DBA::fetch($items)) {
                        if (!empty($fields['body'])) {
+                               if (!empty($item['quote-uri-id'])) {
+                                       $fields['body'] = BBCode::removeSharedData($fields['body']);
+
+                                       if (!empty($fields['raw-body'])) {
+                                               $fields['raw-body'] = BBCode::removeSharedData($fields['raw-body']);
+                                       }
+                               }
+
                                Post\Media::insertFromAttachmentData($item['uri-id'], $fields['body']);
 
                                $content_fields = ['raw-body' => trim($fields['raw-body'] ?? $fields['body'])];
@@ -206,10 +220,7 @@ class Item
                                $content_fields['raw-body'] = Post\Media::insertFromBody($item['uri-id'], $content_fields['raw-body']);
                                $content_fields['raw-body'] = self::setHashtags($content_fields['raw-body']);
 
-                               if ($item['author-network'] != Protocol::DFRN) {
-                                       Post\Media::insertFromRelevantUrl($item['uri-id'], $content_fields['raw-body']);
-                               }
-
+                               Post\Media::insertFromRelevantUrl($item['uri-id'], $content_fields['raw-body']);
                                Post\Content::update($item['uri-id'], $content_fields);
                        }
 
@@ -232,7 +243,7 @@ class Item
 
                foreach ($notify_items as $notify_item) {
                        $post = Post::selectFirst(['uri-id', 'uid'], ['id' => $notify_item]);
-                       Worker::add(PRIORITY_HIGH, 'Notifier', Delivery::POST, (int)$post['uri-id'], (int)$post['uid']);
+                       Worker::add(Worker::PRIORITY_HIGH, 'Notifier', Delivery::POST, (int)$post['uri-id'], (int)$post['uid']);
                }
 
                return $rows;
@@ -246,7 +257,7 @@ class Item
         * @return void
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         */
-       public static function markForDeletion(array $condition, int $priority = PRIORITY_HIGH)
+       public static function markForDeletion(array $condition, int $priority = Worker::PRIORITY_HIGH)
        {
                $items = Post::select(['id'], $condition);
                while ($item = Post::fetch($items)) {
@@ -277,7 +288,7 @@ class Item
                        }
 
                        if ($item['uid'] == $uid) {
-                               self::markForDeletionById($item['id'], PRIORITY_HIGH);
+                               self::markForDeletionById($item['id'], Worker::PRIORITY_HIGH);
                        } elseif ($item['uid'] != 0) {
                                Logger::warning('Wrong ownership. Not deleting item', ['id' => $item['id']]);
                        }
@@ -293,7 +304,7 @@ class Item
         * @return boolean success
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         */
-       public static function markForDeletionById(int $item_id, int $priority = PRIORITY_HIGH): bool
+       public static function markForDeletionById(int $item_id, int $priority = Worker::PRIORITY_HIGH): bool
        {
                Logger::info('Mark item for deletion by id', ['id' => $item_id, 'callstack' => System::callstack()]);
                // locate item to be deleted
@@ -326,7 +337,7 @@ class Item
                 * generate a resource-id and therefore aren't intimately linked to the item.
                 */
                /// @TODO: this should first check if photo is used elsewhere
-               if (strlen($item['resource-id'])) {
+               if ($item['resource-id']) {
                        Photo::delete(['resource-id' => $item['resource-id'], 'uid' => $item['uid']]);
                }
 
@@ -356,7 +367,7 @@ class Item
                Post\DeliveryData::delete($item['uri-id']);
 
                // If it's the parent of a comment thread, kill all the kids
-               if ($item['gravity'] == GRAVITY_PARENT) {
+               if ($item['gravity'] == self::GRAVITY_PARENT) {
                        self::markForDeletion(['parent' => $item['parent'], 'deleted' => false], $priority);
                }
 
@@ -463,7 +474,7 @@ class Item
                        }
                }
 
-               if ($item['gravity'] == GRAVITY_PARENT) {
+               if ($item['gravity'] == self::GRAVITY_PARENT) {
                        if (Contact::isSharingByURL($item['owner-link'], $item['uid'], true)) {
                                $contact_id = Contact::getIdForURL($item['owner-link'], $item['uid']);
                        } else {
@@ -572,7 +583,7 @@ class Item
        public static function isValid(array $item): bool
        {
                // When there is no content then we don't post it
-               if (($item['body'] . $item['title'] == '') && (empty($item['uri-id']) || !Post\Media::existsByURIId($item['uri-id']))) {
+               if (($item['body'] . $item['title'] == '') && empty($item['quote-uri-id']) && (empty($item['uri-id']) || !Post\Media::existsByURIId($item['uri-id']))) {
                        Logger::notice('No body, no title.');
                        return false;
                }
@@ -714,7 +725,7 @@ class Item
                        return 0;
                }
 
-               if ($thread_parent['gravity'] == GRAVITY_PARENT) {
+               if ($thread_parent['gravity'] == Item::GRAVITY_PARENT) {
                        return $uriid;
                }
 
@@ -791,17 +802,60 @@ class Item
                if (isset($item['gravity'])) {
                        return intval($item['gravity']);
                } elseif ($item['parent-uri-id'] === $item['uri-id']) {
-                       return GRAVITY_PARENT;
+                       return self::GRAVITY_PARENT;
                } elseif ($activity->match($item['verb'], Activity::POST)) {
-                       return GRAVITY_COMMENT;
+                       return self::GRAVITY_COMMENT;
                } elseif ($activity->match($item['verb'], Activity::FOLLOW)) {
-                       return GRAVITY_ACTIVITY;
+                       return self::GRAVITY_ACTIVITY;
                } elseif ($activity->match($item['verb'], Activity::ANNOUNCE)) {
-                       return GRAVITY_ACTIVITY;
+                       return self::GRAVITY_ACTIVITY;
                }
 
                Logger::info('Unknown gravity for verb', ['verb' => $item['verb']]);
-               return GRAVITY_UNKNOWN;   // Should not happen
+               return self::GRAVITY_UNKNOWN;   // Should not happen
+       }
+
+       private static function prepareOriginPost(array $item): array
+       {
+               $item['wall'] = 1;
+               $item['origin'] = 1;
+               $item['network'] = Protocol::DFRN;
+               $item['protocol'] = Conversation::PARCEL_DIRECT;
+               $item['direction'] = Conversation::PUSH;
+
+               $owner = User::getOwnerDataById($item['uid']);
+
+               if (empty($item['contact-id'])) {
+                       $item['contact-id'] = $owner['id'];
+               }
+
+               if (empty($item['author-link']) && empty($item['author-id'])) {
+                       $item['author-link']   = $owner['url'];
+                       $item['author-name']   = $owner['name'];
+                       $item['author-avatar'] = $owner['thumb'];
+               }
+
+               if (empty($item['owner-link']) && empty($item['owner-id'])) {
+                       $item['owner-link']   = $item['author-link'];
+                       $item['owner-name']   = $item['author-name'];
+                       $item['owner-avatar'] = $item['author-avatar'];
+               }
+
+               // Setting the object type if not defined before
+               if (empty($item['object-type'])) {
+                       $item['object-type'] = Activity\ObjectType::NOTE; // Default value
+                       $objectdata = BBCode::getAttachedData($item['body']);
+
+                       if ($objectdata['type'] == 'link') {
+                               $item['object-type'] = Activity\ObjectType::BOOKMARK;
+                       } elseif ($objectdata['type'] == 'video') {
+                               $item['object-type'] = Activity\ObjectType::VIDEO;
+                       } elseif ($objectdata['type'] == 'photo') {
+                               $item['object-type'] = Activity\ObjectType::IMAGE;
+                       }
+               }
+
+               return $item;
        }
 
        /**
@@ -816,17 +870,13 @@ class Item
        {
                $orig_item = $item;
 
-               $priority = PRIORITY_HIGH;
+               $priority = Worker::PRIORITY_HIGH;
 
                // If it is a posting where users should get notifications, then define it as wall posting
                if ($notify) {
-                       $item['wall'] = 1;
-                       $item['origin'] = 1;
-                       $item['network'] = Protocol::DFRN;
-                       $item['protocol'] = Conversation::PARCEL_DIRECT;
-                       $item['direction'] = Conversation::PUSH;
+                       $item = self::prepareOriginPost($item);
 
-                       if (is_int($notify) && in_array($notify, PRIORITIES)) {
+                       if (is_int($notify) && in_array($notify, Worker::PRIORITIES)) {
                                $priority = $notify;
                        }
                } else {
@@ -965,7 +1015,7 @@ class Item
                        return 0;
                }
 
-               if ($item['gravity'] !== GRAVITY_PARENT) {
+               if ($item['gravity'] !== self::GRAVITY_PARENT) {
                        $toplevel_parent = self::getTopLevelParent($item);
                        if (empty($toplevel_parent)) {
                                return 0;
@@ -982,6 +1032,7 @@ class Item
                        $item['parent-uri']    = $toplevel_parent['uri'];
                        $item['parent-uri-id'] = $toplevel_parent['uri-id'];
                        $item['deleted']       = $toplevel_parent['deleted'];
+                       $item['wall']          = $toplevel_parent['wall'];
 
                        // Reshares have to keep their permissions to allow forums to work
                        if (!$item['origin'] || ($item['verb'] != Activity::ANNOUNCE)) {
@@ -1060,7 +1111,7 @@ class Item
                        }
 
                        // We have to tell the hooks who we are - this really should be improved
-                       if (!local_user()) {
+                       if (!DI::userSession()->getLocalUserId()) {
                                $_SESSION['authenticated'] = true;
                                $_SESSION['uid'] = $uid;
                                $dummy_session = true;
@@ -1113,15 +1164,28 @@ class Item
                        unset($item['attachments']);
                }
 
+               if (empty($item['quote-uri-id'])) {
+                       $quote_id = self::getQuoteUriId($item['body']);
+                       if (!empty($quote_id)) {
+                               // This is one of these "should not happen" situations.
+                               // The protocol implementations should already have done this job.
+                               Logger::notice('Quote-uri-id detected in post', ['id' => $quote_id, 'guid' => $item['guid'], 'uri-id' => $item['uri-id'], 'callstack' => System::callstack(20)]);
+                               $item['quote-uri-id'] = $quote_id;
+                       }
+               }
+
+               if (!empty($item['quote-uri-id'])) {
+                       $item['raw-body'] = BBCode::removeSharedData($item['raw-body']);
+                       $item['body']     = BBCode::removeSharedData($item['body']);
+               }
+
                Post\Media::insertFromAttachmentData($item['uri-id'], $item['body']);
 
                // Remove all media attachments from the body and store them in the post-media table
                $item['raw-body'] = Post\Media::insertFromBody($item['uri-id'], $item['raw-body']);
                $item['raw-body'] = self::setHashtags($item['raw-body']);
 
-               if (!DBA::exists('contact', ['id' => $item['author-id'], 'network' => Protocol::DFRN])) {
-                       Post\Media::insertFromRelevantUrl($item['uri-id'], $item['raw-body']);
-               }
+               Post\Media::insertFromRelevantUrl($item['uri-id'], $item['raw-body']);
 
                // Check for hashtags in the body and repair or add hashtag links
                $item['body'] = self::setHashtags($item['body']);
@@ -1178,7 +1242,7 @@ class Item
 
                Post::insert($item['uri-id'], $item);
 
-               if ($item['gravity'] == GRAVITY_PARENT) {
+               if ($item['gravity'] == self::GRAVITY_PARENT) {
                        Post\Thread::insert($item['uri-id'], $item);
                }
 
@@ -1187,7 +1251,7 @@ class Item
                }
 
                // Create Diaspora signature
-               if ($item['origin'] && empty($item['diaspora_signed_text']) && ($item['gravity'] != GRAVITY_PARENT)) {
+               if ($item['origin'] && empty($item['diaspora_signed_text']) && ($item['gravity'] != self::GRAVITY_PARENT)) {
                        $signed = Diaspora::createCommentSignature($item);
                        if (!empty($signed)) {
                                $item['diaspora_signed_text'] = json_encode($signed);
@@ -1227,7 +1291,7 @@ class Item
                        return 0;
                }
 
-               if ($item['gravity'] == GRAVITY_PARENT) {
+               if ($item['gravity'] == self::GRAVITY_PARENT) {
                        $item['post-user-id'] = $post_user_id;
                        Post\ThreadUser::insert($item['uri-id'], $item['uid'], $item);
                }
@@ -1245,7 +1309,7 @@ class Item
                // update the commented timestamp on the parent
                if (DI::config()->get('system', 'like_no_comment')) {
                        // Update when it is a comment
-                       $update_commented = in_array($posted_item['gravity'], [GRAVITY_PARENT, GRAVITY_COMMENT]);
+                       $update_commented = in_array($posted_item['gravity'], [self::GRAVITY_PARENT, self::GRAVITY_COMMENT]);
                } else {
                        // Update when it isn't a follow or tag verb
                        $update_commented = !in_array($posted_item['verb'], [Activity::FOLLOW, Activity::TAG]);
@@ -1269,7 +1333,7 @@ class Item
                }
 
                if ($notify) {
-                       if (!\Friendica\Content\Feature::isEnabled($posted_item['uid'], 'explicit_mentions') && ($posted_item['gravity'] == GRAVITY_COMMENT)) {
+                       if (!\Friendica\Content\Feature::isEnabled($posted_item['uid'], 'explicit_mentions') && ($posted_item['gravity'] == self::GRAVITY_COMMENT)) {
                                Tag::createImplicitMentions($posted_item['uri-id'], $posted_item['thr-parent-id']);
                        }
                        Hook::callAll('post_local_end', $posted_item);
@@ -1277,7 +1341,7 @@ class Item
                        Hook::callAll('post_remote_end', $posted_item);
                }
 
-               if ($posted_item['gravity'] === GRAVITY_PARENT) {
+               if ($posted_item['gravity'] === self::GRAVITY_PARENT) {
                        self::addShadow($post_user_id);
                } else {
                        self::addShadowPost($post_user_id);
@@ -1304,15 +1368,16 @@ class Item
                        }
                }
 
+               if (!empty($source) && ($transmit || DI::config()->get('debug', 'store_source'))) {
+                       Post\Activity::insert($item['uri-id'], $source);
+               }
+
                if ($transmit) {
-                       if (!empty($source)) {
-                               Post\Activity::insert($item['uri-id'], $source);
-                       }
                        Worker::add(['priority' => $priority, 'dont_fork' => true], 'Notifier', $notify_type, (int)$posted_item['uri-id'], (int)$posted_item['uid']);
                }
 
                // Fill the cache with the rendered content.
-               if (in_array($posted_item['gravity'], [GRAVITY_PARENT, GRAVITY_COMMENT]) && ($posted_item['uid'] == 0)) {
+               if (in_array($posted_item['gravity'], [self::GRAVITY_PARENT, self::GRAVITY_COMMENT]) && ($posted_item['uid'] == 0)) {
                        self::updateDisplayCache($posted_item['uri-id']);
                }
 
@@ -1328,7 +1393,7 @@ class Item
         */
        public static function getPostReason(array $item): int
        {
-               $actor = ($item['gravity'] == GRAVITY_PARENT) ? $item['owner-id'] : $item['author-id'];
+               $actor = ($item['gravity'] == self::GRAVITY_PARENT) ? $item['owner-id'] : $item['author-id'];
                if (empty($item['origin']) && ($item['uid'] != 0) && Contact::isSharing($actor, $item['uid'])) {
                        return self::PR_FOLLOWER;
                }
@@ -1409,7 +1474,7 @@ class Item
         */
        private static function distributeByTags(array $item)
        {
-               if (($item['uid'] != 0) || ($item['gravity'] != GRAVITY_PARENT) || !in_array($item['network'], Protocol::FEDERATED)) {
+               if (($item['uid'] != 0) || ($item['gravity'] != self::GRAVITY_PARENT) || !in_array($item['network'], Protocol::FEDERATED)) {
                        return;
                }
 
@@ -1535,7 +1600,7 @@ class Item
                        return 0;
                }
 
-               if (($uid != 0) && ($item['gravity'] == GRAVITY_PARENT)) {
+               if (($uid != 0) && ($item['gravity'] == self::GRAVITY_PARENT)) {
                        $owner = User::getOwnerDataById($uid);
                        if (($owner['contact-type'] == User::ACCOUNT_TYPE_COMMUNITY) && !Tag::isMentioned($uri_id, $owner['url'])) {
                                Logger::info('Target user is a forum but is not mentioned here, thread will not be stored', ['uid' => $uid, 'uri-id' => $uri_id]);
@@ -1552,13 +1617,13 @@ class Item
 
                $item = array_merge($item, $fields);
 
-               if (($uid != 0) && Contact::isSharing(($item['gravity'] == GRAVITY_PARENT) ? $item['owner-id'] : $item['author-id'], $uid)) {
+               if (($uid != 0) && Contact::isSharing(($item['gravity'] == Item::GRAVITY_PARENT) ? $item['owner-id'] : $item['author-id'], $uid)) {
                        $item['post-reason'] = self::PR_FOLLOWER;
                }
 
-               $is_reshare = ($item['gravity'] == GRAVITY_ACTIVITY) && ($item['verb'] == Activity::ANNOUNCE);
+               $is_reshare = ($item['gravity'] == self::GRAVITY_ACTIVITY) && ($item['verb'] == Activity::ANNOUNCE);
 
-               if (($uid != 0) && (($item['gravity'] == GRAVITY_PARENT) || $is_reshare) &&
+               if (($uid != 0) && (($item['gravity'] == self::GRAVITY_PARENT) || $is_reshare) &&
                        DI::pConfig()->get($uid, 'system', 'accept_only_sharer') == self::COMPLETION_NONE &&
                        !in_array($item['post-reason'], [self::PR_FOLLOWER, self::PR_TAG, self::PR_TO, self::PR_CC])) {
                        Logger::info('Contact is not a follower, thread will not be stored', ['author' => $item['author-link'], 'uid' => $uid, 'uri-id' => $uri_id, 'post-reason' => $item['post-reason']]);
@@ -1567,7 +1632,7 @@ class Item
 
                $causer = $item['causer-id'] ?: $item['author-id'];
 
-               if (($uri_id != $item['parent-uri-id']) && ($item['gravity'] == GRAVITY_COMMENT) && !Post::exists(['uri-id' => $item['parent-uri-id'], 'uid' => $uid])) {
+               if (($uri_id != $item['parent-uri-id']) && ($item['gravity'] == self::GRAVITY_COMMENT) && !Post::exists(['uri-id' => $item['parent-uri-id'], 'uid' => $uid])) {
                        if (!self::fetchParent($item['parent-uri-id'], $uid, $causer)) {
                                Logger::info('Parent post had not been added', ['uri-id' => $item['parent-uri-id'], 'uid' => $uid, 'causer' => $causer]);
                                return 0;
@@ -1708,7 +1773,7 @@ class Item
                $item['contact-id'] = self::contactId($item);
 
                $notify = false;
-               if ($item['gravity'] == GRAVITY_PARENT) {
+               if ($item['gravity'] == self::GRAVITY_PARENT) {
                        $contact = DBA::selectFirst('contact', [], ['id' => $item['contact-id'], 'self' => false]);
                        if (DBA::isResult($contact)) {
                                $notify = self::isRemoteSelf($contact, $item);
@@ -1738,7 +1803,7 @@ class Item
        private static function addShadow(int $itemid)
        {
                $fields = ['uid', 'private', 'visible', 'deleted', 'network', 'uri-id'];
-               $condition = ['id' => $itemid, 'gravity' => GRAVITY_PARENT];
+               $condition = ['id' => $itemid, 'gravity' => self::GRAVITY_PARENT];
                $item = Post::selectFirst($fields, $condition);
 
                if (!DBA::isResult($item)) {
@@ -1806,7 +1871,7 @@ class Item
                }
 
                // Is it a toplevel post?
-               if ($item['gravity'] == GRAVITY_PARENT) {
+               if ($item['gravity'] == self::GRAVITY_PARENT) {
                        self::addShadow($itemid);
                        return;
                }
@@ -1868,7 +1933,7 @@ class Item
                        return $item['language'];
                }
 
-               if (!in_array($item['gravity'], [GRAVITY_PARENT, GRAVITY_COMMENT]) || empty($item['body'])) {
+               if (!in_array($item['gravity'], [self::GRAVITY_PARENT, self::GRAVITY_COMMENT]) || empty($item['body'])) {
                        return '';
                }
 
@@ -1930,7 +1995,7 @@ class Item
        {
                $latin = '';
                $non_latin = '';
-               for ($i = 0; $i < mb_strlen($body); $i++) { 
+               for ($i = 0; $i < mb_strlen($body); $i++) {
                        $character = mb_substr($body, $i, 1);
                        $ord = mb_ord($character);
 
@@ -2148,13 +2213,13 @@ class Item
                        return false;
                }
 
-               $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $item_id, 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT], 'origin' => false]);
+               $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $item_id, 'gravity' => [self::GRAVITY_PARENT, self::GRAVITY_COMMENT], 'origin' => false]);
                if (!DBA::isResult($item)) {
                        Logger::debug('Post is an activity or origin or not found at all, quitting here.', ['id' => $item_id]);
                        return false;
                }
 
-               if ($item['gravity'] == GRAVITY_PARENT) {
+               if ($item['gravity'] == self::GRAVITY_PARENT) {
                        if (Tag::isMentioned($item['uri-id'], $owner['url'])) {
                                Logger::info('Mention found in tag.', ['uri' => $item['uri'], 'uid' => $uid, 'id' => $item_id, 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
                        } else {
@@ -2199,7 +2264,7 @@ class Item
         */
        private static function autoReshare(array $item)
        {
-               if ($item['gravity'] != GRAVITY_PARENT) {
+               if ($item['gravity'] != self::GRAVITY_PARENT) {
                        return;
                }
 
@@ -2247,7 +2312,7 @@ class Item
 
                $datarray2 = $datarray;
                Logger::info('remote-self start', ['contact' => $contact['url'], 'remote_self'=> $contact['remote_self'], 'item' => $datarray]);
-               if ($contact['remote_self'] == Contact::MIRROR_OWN_POST) {
+               if (in_array($contact['remote_self'], [Contact::MIRROR_OWN_POST, Contact::MIRROR_FORWARDED])) {
                        $self = DBA::selectFirst('contact', ['id', 'name', 'url', 'thumb'],
                                        ['uid' => $contact['uid'], 'self' => true]);
                        if (DBA::isResult($self)) {
@@ -2293,8 +2358,8 @@ class Item
                        $result = self::insert($datarray2);
                        Logger::info('remote-self post original item', ['contact' => $contact['url'], 'result'=> $result, 'item' => $datarray2]);
                } else {
-                       $datarray["app"] = "Feed";
-                       $result = true;
+                       Logger::info('No valid mirroring option', ['uid' => $contact['uid'], 'id' => $contact['id'], 'network' => $contact['network'], 'remote_self' => $contact['remote_self']]);
+                       return false;
                }
 
                return (bool)$result;
@@ -2460,7 +2525,7 @@ class Item
                }
 
                $condition = ["`uid` = ? AND NOT `deleted` AND `gravity` = ?",
-                       $uid, GRAVITY_PARENT];
+                       $uid, self::GRAVITY_PARENT];
 
                /*
                 * $expire_network_only = save your own wall posts
@@ -2667,8 +2732,8 @@ class Item
                        $vids = Verb::getID($activity);
                }
 
-               $condition = ['vid' => $vids, 'deleted' => false, 'gravity' => GRAVITY_ACTIVITY,
-                       'author-id' => $author_id, 'uid' => $item['uid'], 'thr-parent-id' => $uri_id];
+               $condition = ['vid' => $vids, 'deleted' => false, 'gravity' => self::GRAVITY_ACTIVITY,
+                       'author-id' => $author_id, 'uid' => $uid, 'thr-parent-id' => $uri_id];
                $like_item = Post::selectFirst(['id', 'guid', 'verb'], $condition);
 
                if (DBA::isResult($like_item)) {
@@ -2721,7 +2786,7 @@ class Item
                        'network'       => Protocol::DFRN,
                        'protocol'      => Conversation::PARCEL_DIRECT,
                        'direction'     => Conversation::PUSH,
-                       'gravity'       => GRAVITY_ACTIVITY,
+                       'gravity'       => self::GRAVITY_ACTIVITY,
                        'parent'        => $item['id'],
                        'thr-parent'    => $item['uri'],
                        'owner-id'      => $author_id,
@@ -2762,8 +2827,8 @@ class Item
         */
        public static function getPermissionsConditionArrayByUserId(int $owner_id): array
        {
-               $local_user = local_user();
-               $remote_user = Session::getRemoteContactID($owner_id);
+               $local_user = DI::userSession()->getLocalUserId();
+               $remote_user = DI::userSession()->getRemoteContactID($owner_id);
 
                // default permissions - anonymous user
                $condition = ["`private` != ?", self::PRIVATE];
@@ -2794,8 +2859,8 @@ class Item
         */
        public static function getPermissionsSQLByUserId(int $owner_id, string $table = ''): string
        {
-               $local_user = local_user();
-               $remote_user = Session::getRemoteContactID($owner_id);
+               $local_user = DI::userSession()->getLocalUserId();
+               $remote_user = DI::userSession()->getRemoteContactID($owner_id);
 
                if (!empty($table)) {
                        $table = DBA::quoteIdentifier($table) . '.';
@@ -2846,9 +2911,9 @@ class Item
                        return $l10n->t('event');
                } elseif (!empty($item['resource-id'])) {
                        return $l10n->t('photo');
-               } elseif ($item['gravity'] == GRAVITY_ACTIVITY) {
+               } elseif ($item['gravity'] == self::GRAVITY_ACTIVITY) {
                        return $l10n->t('activity');
-               } elseif ($item['gravity'] == GRAVITY_COMMENT) {
+               } elseif ($item['gravity'] == self::GRAVITY_COMMENT) {
                        return $l10n->t('comment');
                }
 
@@ -2937,22 +3002,47 @@ class Item
                $item['mentions'] = $tags['mentions'];
 
                $body = $item['body'] ?? '';
-               $shared = BBCode::fetchShareAttributes($body);
-               if (!empty($shared['guid'])) {
-                       $shared_item = Post::selectFirst(['uri-id', 'plink', 'has-media'], ['guid' => $shared['guid']]);
-                       $shared_uri_id = $shared_item['uri-id'] ?? 0;
-                       $shared_links = [strtolower($shared_item['plink'] ?? '')];
-                       $shared_attachments = Post\Media::splitAttachments($shared_uri_id, $shared['guid'], [], $shared_item['has-media'] ?? false);
+
+               $fields = ['uri-id', 'uri', 'body', 'title', 'author-name', 'author-link', 'author-avatar', 'guid', 'created', 'plink', 'network', 'has-media', 'quote-uri-id', 'post-type'];
+
+               $shared_uri_id = 0;
+               $shared_links  = [];
+
+               $shared = DI::contentItem()->getSharedPost($item, $fields);
+               if (!empty($shared['post'])) {
+                       $shared_item  = $shared['post'];
+                       $quote_uri_id = $shared['post']['uri-id'];
+                       $shared_links[] = strtolower($shared['post']['uri']);
+                       $item['body'] = BBCode::removeSharedData($item['body']);
+               } elseif (empty($shared_item['uri-id']) && empty($item['quote-uri-id']) && ($item['network'] != Protocol::DIASPORA)) {
+                       $media = Post\Media::getByURIId($item['uri-id'], [Post\Media::ACTIVITY]);
+                       if (!empty($media)) {
+                               $shared_item = Post::selectFirst($fields, ['plink' => $media[0]['url'], 'uid' => [$item['uid'], 0]]);
+
+                               if (empty($shared_item['uri-id'])) {
+                                       $shared_item = Post::selectFirst($fields, ['uri' => $media[0]['url'], 'uid' => [$item['uid'], 0]]);
+                                       $shared_links[] = strtolower($media[0]['url']);
+                               }
+
+                               $quote_uri_id = $shared_item['uri-id'] ?? 0;
+                       }
+               }
+
+               if (!empty($quote_uri_id)) {
+                       $item['body'] .= "\n" . DI::contentItem()->createSharedBlockByArray($shared_item);
+               }
+
+               if (!empty($shared_item['uri-id'])) {
+                       $shared_uri_id = $shared_item['uri-id'];
+                       $shared_links[] = strtolower($shared_item['plink']);
+                       $shared_attachments = Post\Media::splitAttachments($shared_uri_id, [], $shared_item['has-media']);
                        $shared_links = array_merge($shared_links, array_column($shared_attachments['visual'], 'url'));
                        $shared_links = array_merge($shared_links, array_column($shared_attachments['link'], 'url'));
                        $shared_links = array_merge($shared_links, array_column($shared_attachments['additional'], 'url'));
                        $item['body'] = self::replaceVisualAttachments($shared_attachments, $item['body']);
-               } else {
-                       $shared_uri_id = 0;
-                       $shared_links = [];
                }
 
-               $attachments = Post\Media::splitAttachments($item['uri-id'], $item['guid'] ?? '', $shared_links, $item['has-media'] ?? false);
+               $attachments = Post\Media::splitAttachments($item['uri-id'], $shared_links, $item['has-media'] ?? false);
                $item['body'] = self::replaceVisualAttachments($attachments, $item['body'] ?? '');
 
                $item['body'] = preg_replace("/\s*\[attachment .*?\].*?\[\/attachment\]\s*/ism", "\n", $item['body']);
@@ -2966,8 +3056,8 @@ class Item
 
                // Compile eventual content filter reasons
                $filter_reasons = [];
-               if (!$is_preview && public_contact() != $item['author-id']) {
-                       if (!empty($item['content-warning']) && (!local_user() || !DI::pConfig()->get(local_user(), 'system', 'disable_cw', false))) {
+               if (!$is_preview && DI::userSession()->getPublicContactId() != $item['author-id']) {
+                       if (!empty($item['content-warning']) && (!DI::userSession()->getLocalUserId() || !DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'system', 'disable_cw', false))) {
                                $filter_reasons[] = DI::l10n()->t('Content warning: %s', $item['content-warning']);
                        }
 
@@ -3000,10 +3090,10 @@ class Item
                }
 
                if (!empty($shared_attachments)) {
-                       $s = self::addVisualAttachments($shared_attachments, $item, $s, true);
+                       $s = self::addVisualAttachments($shared_attachments, $shared_item, $s, true);
                        $s = self::addLinkAttachment($shared_uri_id ?: $item['uri-id'], $shared_attachments, $body, $s, true, []);
                        $s = self::addNonVisualAttachments($shared_attachments, $item, $s, true);
-                       $body = preg_replace("/\s*\[share .*?\].*?\[\/share\]\s*/ism", '', $body);
+                       $body = BBCode::removeSharedData($body);
                }
 
                $s = self::addVisualAttachments($attachments, $item, $s, false);
@@ -3045,11 +3135,20 @@ class Item
        {
                // Make sure that for example site parameters aren't used when testing if the link is contained in the body
                $urlparts = parse_url($url);
-               if (!empty($urlparts)) {
-                       unset($urlparts['query']);
-                       unset($urlparts['fragment']);
+               if (empty($urlparts)) {
+                       return false;
+               }
+
+               unset($urlparts['query']);
+               unset($urlparts['fragment']);
+
+               try {
                        $url = (string)Uri::fromParts($urlparts);
-               } else {
+               } catch (\InvalidArgumentException $e) {
+                       DI::logger()->notice('Invalid URL', ['$url' => $url, '$urlparts' => $urlparts]);
+                       /* See https://github.com/friendica/friendica/issues/12113
+                        * Malformed URLs will result in a Fatal Error
+                        */
                        return false;
                }
 
@@ -3062,12 +3161,14 @@ class Item
                if (strpos($body, $url)) {
                        return true;
                }
+
                foreach ([0, 1, 2] as $size) {
                        if (preg_match('#/photo/.*-' . $size . '\.#ism', $url) &&
                                strpos(preg_replace('#(/photo/.*)-[012]\.#ism', '$1-' . $size . '.', $body), $url)) {
                                return true;
                        }
                }
+
                return false;
        }
 
@@ -3121,12 +3222,18 @@ class Item
                                continue;
                        }
 
-                       if (!empty($attachment['preview'])) {
+                       if ($attachment['filetype'] == 'image') {
+                               $preview_url = Post\Media::getPreviewUrlForId($attachment['id'], ($attachment['width'] > $attachment['height']) ? Proxy::SIZE_MEDIUM : Proxy::SIZE_LARGE);
+                       } elseif (!empty($attachment['preview'])) {
                                $preview_url = Post\Media::getPreviewUrlForId($attachment['id'], Proxy::SIZE_LARGE);
                        } else {
                                $preview_url = '';
                        }
 
+                       if ($preview_url && self::containsLink($item['body'], $preview_url)) {
+                               continue;
+                       }
+
                        if (($attachment['filetype'] == 'video')) {
                                /// @todo Move the template to /content as well
                                $media = Renderer::replaceMacros(Renderer::getMarkupTemplate('video_top.tpl'), [
@@ -3158,10 +3265,14 @@ class Item
                                        $trailing .= $media;
                                }
                        } elseif ($attachment['filetype'] == 'image') {
+                               $src_url = Post\Media::getUrlForId($attachment['id']);
+                               if (self::containsLink($item['body'], $src_url)) {
+                                       continue;
+                               }
                                $media = Renderer::replaceMacros(Renderer::getMarkupTemplate('content/image.tpl'), [
                                        '$image' => [
-                                               'src'        => Post\Media::getUrlForId($attachment['id']),
-                                               'preview'    => Post\Media::getPreviewUrlForId($attachment['id'], ($attachment['width'] > $attachment['height']) ? Proxy::SIZE_MEDIUM : Proxy::SIZE_LARGE),
+                                               'src'        => $src_url,
+                                               'preview'    => $preview_url,
                                                'attachment' => $attachment,
                                        ],
                                ]);
@@ -3271,7 +3382,7 @@ class Item
                }
                DI::profiler()->stopRecording();
 
-               if (isset($data['url']) && !in_array($data['url'], $ignore_links)) {
+               if (isset($data['url']) && !in_array(strtolower($data['url']), $ignore_links)) {
                        if (!empty($data['description']) || !empty($data['image']) || !empty($data['preview'])) {
                                $parts = parse_url($data['url']);
                                if (!empty($parts['scheme']) && !empty($parts['host'])) {
@@ -3364,7 +3475,7 @@ class Item
                                        $percent = $option['replies'] / $question['voters'] * 100;
                                        $options[$key]['vote'] = DI::l10n()->tt('%2$s (%3$d%%, %1$d vote)', '%2$s (%3$d%%, %1$d votes)', $option['replies'], $option['name'], round($percent, 1));
                                } else {
-                                       $options[$key]['vote'] = DI::l10n()->tt('%2$s (%1$d vote)', '%2$s (%1$d votes)', $option['replies'], $option['name']);
+                                       $options[$key]['vote'] = DI::l10n()->tt('%2$s (%1$d vote)', '%2$s (%1$d votes)', $option['replies'], $option['name']);
                                }
                        }
 
@@ -3403,7 +3514,7 @@ class Item
                        $plink = $item['uri'];
                }
 
-               if (local_user()) {
+               if (DI::userSession()->getLocalUserId()) {
                        $ret = [
                                'href' => "display/" . $item['guid'],
                                'orig' => "display/" . $item['guid'],
@@ -3549,78 +3660,6 @@ class Item
                return 0;
        }
 
-       /**
-        * Return share data from an item array (if the item is shared item)
-        * We are providing the complete Item array, because at some time in the future
-        * we hopefully will define these values not in the body anymore but in some item fields.
-        * This function is meant to replace all similar functions in the system.
-        *
-        * @param array $item
-        *
-        * @return array with share information
-        */
-       public static function getShareArray(array $item): array
-       {
-               return BBCode::fetchShareAttributes($item['body']);
-       }
-
-       /**
-        * Fetch item information for shared items from the original items and adds it.
-        *
-        * @param array $item
-        *
-        * @return array item array with data from the original item
-        */
-       public static function addShareDataFromOriginal(array $item): array
-       {
-               $shared = self::getShareArray($item);
-               if (empty($shared)) {
-                       return $item;
-               }
-
-               // Real reshares always have got a GUID.
-               if (empty($shared['guid'])) {
-                       return $item;
-               }
-
-               $uid = $item['uid'] ?? 0;
-
-               // first try to fetch the item via the GUID. This will work for all reshares that had been created on this system
-               $shared_item = Post::selectFirst(['title', 'body'], ['guid' => $shared['guid'], 'uid' => [0, $uid]]);
-               if (!DBA::isResult($shared_item)) {
-                       if (empty($shared['link'])) {
-                               return $item;
-                       }
-
-                       // Otherwhise try to find (and possibly fetch) the item via the link. This should work for Diaspora and ActivityPub posts
-                       $id = self::fetchByLink($shared['link'] ?? '', $uid);
-                       if (empty($id)) {
-                               Logger::info('Original item not found', ['url' => $shared['link'] ?? '', 'callstack' => System::callstack()]);
-                               return $item;
-                       }
-
-                       $shared_item = Post::selectFirst(['title', 'body'], ['id' => $id]);
-                       if (!DBA::isResult($shared_item)) {
-                               return $item;
-                       }
-                       Logger::info('Got shared data from url', ['url' => $shared['link'], 'callstack' => System::callstack()]);
-               } else {
-                       Logger::info('Got shared data from guid', ['guid' => $shared['guid'], 'callstack' => System::callstack()]);
-               }
-
-               if (!empty($shared_item['title'])) {
-                       $body = '[h3]' . $shared_item['title'] . "[/h3]\n" . $shared_item['body'];
-                       unset($shared_item['title']);
-               } else {
-                       $body = $shared_item['body'];
-               }
-
-               $item['body'] = preg_replace("/\[share ([^\[\]]*)\].*\[\/share\]/ism", '[share $1]' . str_replace('$', '\$', $body) . '[/share]', $item['body']);
-               unset($shared_item['body']);
-
-               return array_merge($item, $shared_item);
-       }
-
        /**
         * Check a prospective item array against user-level permissions
         *
@@ -3650,7 +3689,7 @@ class Item
                        return false;
                }
 
-               if (!empty($item['causer-id']) && ($item['gravity'] === GRAVITY_PARENT) && Contact\User::isIgnored($item['causer-id'], $user_id)) {
+               if (!empty($item['causer-id']) && ($item['gravity'] === self::GRAVITY_PARENT) && Contact\User::isIgnored($item['causer-id'], $user_id)) {
                        Logger::notice('Causer is ignored by user', ['causer-link' => $item['causer-link'] ?? $item['causer-id'], 'uid' => $user_id, 'item-uri' => $item['uri']]);
                        return false;
                }
@@ -3659,39 +3698,61 @@ class Item
        }
 
        /**
-        * Improve the data in shared posts
+        * Fetch the uri-id of a quote
         *
-        * @param array $item
-        * @return string body
+        * @param string $body
+        * @return integer
         */
-       public static function improveSharedDataInBody(array $item): string
+       public static function getQuoteUriId(string $body, int $uid = 0): int
        {
-               $shared = BBCode::fetchShareAttributes($item['body']);
-               if (empty($shared['link'])) {
-                       return $item['body'];
+               $shared = BBCode::fetchShareAttributes($body);
+               if (empty($shared['guid']) && empty($shared['message_id'])) {
+                       return 0;
                }
 
-               $id = self::fetchByLink($shared['link']);
-               Logger::info('Fetched shared post', ['uri-id' => $item['uri-id'], 'id' => $id, 'author' => $shared['profile'], 'url' => $shared['link'], 'guid' => $shared['guid'], 'callstack' => System::callstack()]);
-               if (!$id) {
-                       return $item['body'];
+               if (empty($shared['link']) && empty($shared['message_id'])) {
+                       Logger::notice('Invalid share block.', ['share' => $shared]);
+                       return 0;
                }
 
-               $shared_item = Post::selectFirst(['author-name', 'author-link', 'author-avatar', 'plink', 'created', 'guid', 'title', 'body'], ['id' => $id]);
-               if (!DBA::isResult($shared_item)) {
-                       return $item['body'];
+               if (!empty($shared['guid'])) {
+                       $shared_item = Post::selectFirst(['uri-id'], ['guid' => $shared['guid'], 'uid' => [0, $uid]]);
+                       if (!empty($shared_item['uri-id'])) {
+                               Logger::debug('Found post by guid', ['guid' => $shared['guid'], 'uid' => $uid]);
+                               return $shared_item['uri-id'];
+                       }
                }
 
-               $shared_content = BBCode::getShareOpeningTag($shared_item['author-name'], $shared_item['author-link'], $shared_item['author-avatar'], $shared_item['plink'], $shared_item['created'], $shared_item['guid']);
+               if (!empty($shared['message_id'])) {
+                       $shared_item = Post::selectFirst(['uri-id'], ['uri' => $shared['message_id'], 'uid' => [0, $uid]]);
+                       if (!empty($shared_item['uri-id'])) {
+                               Logger::debug('Found post by message_id', ['message_id' => $shared['message_id'], 'uid' => $uid]);
+                               return $shared_item['uri-id'];
+                       }
+               }
 
-               if (!empty($shared_item['title'])) {
-                       $shared_content .= '[h3]'.$shared_item['title'].'[/h3]'."\n";
+               if (!empty($shared['link'])) {
+                       $shared_item = Post::selectFirst(['uri-id'], ['plink' => $shared['link'], 'uid' => [0, $uid]]);
+                       if (!empty($shared_item['uri-id'])) {
+                               Logger::debug('Found post by link', ['link' => $shared['link'], 'uid' => $uid]);
+                               return $shared_item['uri-id'];
+                       }
                }
 
-               $shared_content .= $shared_item['body'];
+               $url = $shared['message_id'] ?: $shared['link'];
+               $id = self::fetchByLink($url);
+               if (!$id) {
+                       Logger::notice('Post could not be fetched.', ['url' => $url, 'uid' => $uid]);
+                       return 0;
+               }
 
-               $item['body'] = preg_replace("/\[share.*?\](.*)\[\/share\]/ism", $shared_content . '[/share]', $item['body']);
-               Logger::info('New shared data', ['uri-id' => $item['uri-id'], 'id' => $id, 'shared_item' => $shared_item]);
-               return $item['body'];
+               $shared_item = Post::selectFirst(['uri-id'], ['id' => $id]);
+               if (!empty($shared_item['uri-id'])) {
+                       Logger::debug('Fetched shared post', ['id' => $id, 'url' => $url, 'uid' => $uid]);
+                       return $shared_item['uri-id'];
+               }
+
+               Logger::warning('Post does not exist although it was supposed to had been fetched.', ['id' => $id, 'url' => $url, 'uid' => $uid]);
+               return 0;
        }
 }