]> git.mxchange.org Git - friendica.git/blobdiff - src/Protocol/Diaspora.php
The quote functionality is simplified
[friendica.git] / src / Protocol / Diaspora.php
index 45879df2aef340a08a4ccfc8afa022ac79be35a5..88665f949a029c657b7db8c11d4b9d10e0ba5591 100644 (file)
@@ -41,6 +41,7 @@ use Friendica\Model\Mail;
 use Friendica\Model\Post;
 use Friendica\Model\Tag;
 use Friendica\Model\User;
+use Friendica\Network\HTTPClient\Client\HttpClientAccept;
 use Friendica\Network\Probe;
 use Friendica\Util\Crypto;
 use Friendica\Util\DateTimeFormat;
@@ -49,6 +50,7 @@ use Friendica\Util\Network;
 use Friendica\Util\Strings;
 use Friendica\Util\XML;
 use Friendica\Worker\Delivery;
+use GuzzleHttp\Psr7\Uri;
 use SimpleXMLElement;
 
 /**
@@ -56,6 +58,10 @@ use SimpleXMLElement;
  */
 class Diaspora
 {
+       const PUSHED       = 0;
+       const FETCHED      = 1;
+       const FORCED_FETCH = 2;
+
        /**
         * Return a list of participating contacts for a thread
         *
@@ -69,9 +75,9 @@ class Diaspora
         * @return array of relay servers
         * @throws \Exception
         */
-       public static function participantsForThread(array $item, array $contacts)
+       public static function participantsForThread(array $item, array $contacts): array
        {
-               if (!in_array($item['private'], [Item::PUBLIC, Item::UNLISTED]) || in_array($item["verb"], [Activity::FOLLOW, Activity::TAG])) {
+               if (!in_array($item['private'], [Item::PUBLIC, Item::UNLISTED]) || in_array($item['verb'], [Activity::FOLLOW, Activity::TAG])) {
                        Logger::info('Item is private or a participation request. It will not be relayed', ['guid' => $item['guid'], 'private' => $item['private'], 'verb' => $item['verb']]);
                        return $contacts;
                }
@@ -109,27 +115,27 @@ class Diaspora
         *
         * @param string $envelope The magic envelope
         *
-        * @return string verified data
+        * @return string|bool verified data or false on error
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function verifyMagicEnvelope($envelope)
+       private static function verifyMagicEnvelope(string $envelope)
        {
                $basedom = XML::parseString($envelope, true);
 
                if (!is_object($basedom)) {
-                       Logger::notice("Envelope is no XML file");
+                       Logger::notice('Envelope is no XML file');
                        return false;
                }
 
-               $children = $basedom->children('http://salmon-protocol.org/ns/magic-env');
+               $children = $basedom->children(ActivityNamespace::SALMON_ME);
 
                if (sizeof($children) == 0) {
-                       Logger::notice("XML has no children");
+                       Logger::notice('XML has no children');
                        return false;
                }
 
-               $handle = "";
+               $handle = '';
 
                $data = Strings::base64UrlDecode($children->data);
                $type = $children->data->attributes()->type[0];
@@ -140,14 +146,14 @@ class Diaspora
 
                $sig = Strings::base64UrlDecode($children->sig);
                $key_id = $children->sig->attributes()->key_id[0];
-               if ($key_id != "") {
+               if ($key_id != '') {
                        $handle = Strings::base64UrlDecode($key_id);
                }
 
                $b64url_data = Strings::base64UrlEncode($data);
-               $msg = str_replace(["\n", "\r", " ", "\t"], ["", "", "", ""], $b64url_data);
+               $msg = str_replace(["\n", "\r", " ", "\t"], ['', '', '', ''], $b64url_data);
 
-               $signable_data = $msg.".".Strings::base64UrlEncode($type).".".Strings::base64UrlEncode($encoding).".".Strings::base64UrlEncode($alg);
+               $signable_data = $msg . '.' . Strings::base64UrlEncode($type) . '.' . Strings::base64UrlEncode($encoding) . '.' . Strings::base64UrlEncode($alg);
 
                if ($handle == '') {
                        Logger::notice('No author could be decoded. Discarding. Message: ' . $envelope);
@@ -178,7 +184,7 @@ class Diaspora
         *
         * @return string encrypted data
         */
-       private static function aesEncrypt($key, $iv, $data)
+       private static function aesEncrypt(string $key, string $iv, string $data): string
        {
                return openssl_encrypt($data, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
        }
@@ -192,19 +198,19 @@ class Diaspora
         *
         * @return string decrypted data
         */
-       private static function aesDecrypt($key, $iv, $encrypted)
+       private static function aesDecrypt(string $key, string $iv, string $encrypted): string
        {
                return openssl_decrypt($encrypted, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
        }
 
        /**
-        * Decodes incoming Diaspora message in the new format
+        * Decodes incoming Diaspora message in the new format. This method returns false on an error.
         *
         * @param string  $raw      raw post message
         * @param string  $privKey   The private key of the importer
         * @param boolean $no_exit  Don't do an http exit on error
         *
-        * @return array
+        * @return bool|array
         * 'message' -> decoded Diaspora XML message
         * 'author' -> author diaspora handle
         * 'key' -> author public key (converted to pkcs#8)
@@ -255,13 +261,13 @@ class Diaspora
                $base = $basedom->children(ActivityNamespace::SALMON_ME);
 
                // Not sure if this cleaning is needed
-               $data = str_replace([" ", "\t", "\r", "\n"], ["", "", "", ""], $base->data);
+               $data = str_replace([" ", "\t", "\r", "\n"], ['', '', '', ''], $base->data);
 
                // Build the signed data
                $type = $base->data[0]->attributes()->type[0];
                $encoding = $base->encoding;
                $alg = $base->alg;
-               $signed_data = $data.'.'.Strings::base64UrlEncode($type).'.'.Strings::base64UrlEncode($encoding).'.'.Strings::base64UrlEncode($alg);
+               $signed_data = $data . '.' . Strings::base64UrlEncode($type) . '.' . Strings::base64UrlEncode($encoding) . '.' . Strings::base64UrlEncode($alg);
 
                // This is the signature
                $signature = Strings::base64UrlDecode($base->sig);
@@ -298,9 +304,11 @@ class Diaspora
                        }
                }
 
-               return ['message' => (string)Strings::base64UrlDecode($base->data),
-                               'author' => XML::unescape($author_addr),
-                               'key' => (string)$key];
+               return [
+                       'message' => (string)Strings::base64UrlDecode($base->data),
+                       'author' => XML::unescape($author_addr),
+                       'key' => (string)$key
+               ];
        }
 
        /**
@@ -389,7 +397,7 @@ class Diaspora
                // unpack the  data
 
                // strip whitespace so our data element will return to one big base64 blob
-               $data = str_replace([" ", "\t", "\r", "\n"], ["", "", "", ""], $base->data);
+               $data = str_replace([" ", "\t", "\r", "\n"], ['', '', '', ''], $base->data);
 
 
                // stash away some other stuff for later
@@ -440,37 +448,42 @@ class Diaspora
 
                Logger::notice('Message verified.');
 
-               return ['message' => (string)$inner_decrypted,
-                               'author' => XML::unescape($author_link),
-                               'key' => (string)$key];
+               return [
+                       'message' => (string)$inner_decrypted,
+                       'author' => XML::unescape($author_link),
+                       'key' => (string)$key
+               ];
        }
 
 
        /**
         * Dispatches public messages and find the fitting receivers
         *
-        * @param array $msg     The post that will be dispatched
-        * @param bool  $fetched The message had been fetched (default "false")
+        * @param array $msg       The post that will be dispatched
+        * @param int   $direction Indicates if the message had been fetched or pushed (self::PUSHED, self::FETCHED, self::FORCED_FETCH)
         *
-        * @return int The message id of the generated message, "true" or "false" if there was an error
+        * @return int|bool The message id of the generated message, "true" or "false" if there was an error
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function dispatchPublic($msg, bool $fetched = false)
+       public static function dispatchPublic(array $msg, int $direction)
        {
-               $enabled = intval(DI::config()->get("system", "diaspora_enabled"));
+               $enabled = intval(DI::config()->get('system', 'diaspora_enabled'));
                if (!$enabled) {
-                       Logger::notice("diaspora is disabled");
+                       Logger::notice('Diaspora is disabled');
                        return false;
                }
 
                if (!($fields = self::validPosting($msg))) {
-                       Logger::notice("Invalid posting");
+                       Logger::warning('Invalid posting');
                        return false;
                }
 
-               $importer = ["uid" => 0, "page-flags" => User::PAGE_FLAGS_FREELOVE];
-               $success = self::dispatch($importer, $msg, $fields, $fetched);
+               $importer = [
+                       'uid' => 0,
+                       'page-flags' => User::PAGE_FLAGS_FREELOVE
+               ];
+               $success = self::dispatch($importer, $msg, $fields, $direction);
 
                return $success;
        }
@@ -478,26 +491,26 @@ class Diaspora
        /**
         * Dispatches the different message types to the different functions
         *
-        * @param array            $importer Array of the importer user
-        * @param array            $msg      The post that will be dispatched
-        * @param SimpleXMLElement $fields   SimpleXML object that contains the message
-        * @param bool             $fetched  The message had been fetched (default "false")
+        * @param array            $importer  Array of the importer user
+        * @param array            $msg       The post that will be dispatched
+        * @param SimpleXMLElement $fields    SimpleXML object that contains the message
+        * @param int              $direction Indicates if the message had been fetched or pushed (self::PUSHED, self::FETCHED, self::FORCED_FETCH)
         *
-        * @return int The message id of the generated message, "true" or "false" if there was an error
+        * @return int|bool The message id of the generated message, "true" or "false" if there was an error
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function dispatch(array $importer, $msg, SimpleXMLElement $fields = null, bool $fetched = false)
+       public static function dispatch(array $importer, array $msg, SimpleXMLElement $fields = null, int $direction = self::PUSHED)
        {
                // The sender is the handle of the contact that sent the message.
                // This will often be different with relayed messages (for example "like" and "comment")
-               $sender = $msg["author"];
+               $sender = $msg['author'];
 
                // This is only needed for private postings since this is already done for public ones before
                if (is_null($fields)) {
                        $private = true;
                        if (!($fields = self::validPosting($msg))) {
-                               Logger::notice("Invalid posting");
+                               Logger::warning('Invalid posting');
                                return false;
                        }
                } else {
@@ -506,77 +519,77 @@ class Diaspora
 
                $type = $fields->getName();
 
-               Logger::info('Received message', ['type' => $type, 'sender' => $sender, 'user' => $importer["uid"]]);
+               Logger::info('Received message', ['type' => $type, 'sender' => $sender, 'user' => $importer['uid']]);
 
                switch ($type) {
-                       case "account_migration":
+                       case 'account_migration':
                                if (!$private) {
                                        Logger::notice('Message with type ' . $type . ' is not private, quitting.');
                                        return false;
                                }
                                return self::receiveAccountMigration($importer, $fields);
 
-                       case "account_deletion":
+                       case 'account_deletion':
                                return self::receiveAccountDeletion($fields);
 
-                       case "comment":
-                               return self::receiveComment($importer, $sender, $fields, $msg["message"], $fetched);
+                       case 'comment':
+                               return self::receiveComment($importer, $sender, $fields, $msg['message'], $direction);
 
-                       case "contact":
+                       case 'contact':
                                if (!$private) {
                                        Logger::notice('Message with type ' . $type . ' is not private, quitting.');
                                        return false;
                                }
                                return self::receiveContactRequest($importer, $fields);
 
-                       case "conversation":
+                       case 'conversation':
                                if (!$private) {
                                        Logger::notice('Message with type ' . $type . ' is not private, quitting.');
                                        return false;
                                }
                                return self::receiveConversation($importer, $msg, $fields);
 
-                       case "like":
-                               return self::receiveLike($importer, $sender, $fields, $fetched);
+                       case 'like':
+                               return self::receiveLike($importer, $sender, $fields, $direction);
 
-                       case "message":
+                       case 'message':
                                if (!$private) {
                                        Logger::notice('Message with type ' . $type . ' is not private, quitting.');
                                        return false;
                                }
                                return self::receiveMessage($importer, $fields);
 
-                       case "participation":
+                       case 'participation':
                                if (!$private) {
                                        Logger::notice('Message with type ' . $type . ' is not private, quitting.');
                                        return false;
                                }
-                               return self::receiveParticipation($importer, $fields, $fetched);
+                               return self::receiveParticipation($importer, $fields, $direction);
 
-                       case "photo": // Not implemented
+                       case 'photo': // Not implemented
                                return self::receivePhoto($importer, $fields);
 
-                       case "poll_participation": // Not implemented
+                       case 'poll_participation': // Not implemented
                                return self::receivePollParticipation($importer, $fields);
 
-                       case "profile":
+                       case 'profile':
                                if (!$private) {
                                        Logger::notice('Message with type ' . $type . ' is not private, quitting.');
                                        return false;
                                }
                                return self::receiveProfile($importer, $fields);
 
-                       case "reshare":
-                               return self::receiveReshare($importer, $fields, $msg["message"], $fetched);
+                       case 'reshare':
+                               return self::receiveReshare($importer, $fields, $msg['message'], $direction);
 
-                       case "retraction":
+                       case 'retraction':
                                return self::receiveRetraction($importer, $sender, $fields);
 
-                       case "status_message":
-                               return self::receiveStatusMessage($importer, $fields, $msg["message"], $fetched);
+                       case 'status_message':
+                               return self::receiveStatusMessage($importer, $fields, $msg['message'], $direction);
 
                        default:
-                               Logger::notice("Unknown message type ".$type);
+                               Logger::notice('Unknown message type ' . $type);
                                return false;
                }
        }
@@ -593,9 +606,9 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function validPosting($msg)
+       private static function validPosting(array $msg)
        {
-               $data = XML::parseString($msg["message"]);
+               $data = XML::parseString($msg['message']);
 
                if (!is_object($data)) {
                        Logger::info('No valid XML', ['message' => $msg['message']]);
@@ -603,7 +616,7 @@ class Diaspora
                }
 
                // Is this the new or the old version?
-               if ($data->getName() == "XML") {
+               if ($data->getName() == 'XML') {
                        $oldXML = true;
                        foreach ($data->post->children() as $child) {
                                $element = $child;
@@ -616,106 +629,112 @@ class Diaspora
                $type = $element->getName();
                $orig_type = $type;
 
-               Logger::debug("Got message type ".$type.": ".$msg["message"]);
+               Logger::debug('Got message', ['type' => $type, 'message' => $msg['message']]);
 
                // All retractions are handled identically from now on.
                // In the new version there will only be "retraction".
-               if (in_array($type, ["signed_retraction", "relayable_retraction"]))
-                       $type = "retraction";
+               if (in_array($type, ['signed_retraction', 'relayable_retraction']))
+                       $type = 'retraction';
 
-               if ($type == "request") {
-                       $type = "contact";
+               if ($type == 'request') {
+                       $type = 'contact';
                }
 
-               $fields = new SimpleXMLElement("<".$type."/>");
+               $fields = new SimpleXMLElement('<' . $type . '/>');
 
-               $signed_data = "";
+               $signed_data = '';
                $author_signature = null;
                $parent_author_signature = null;
 
                foreach ($element->children() as $fieldname => $entry) {
                        if ($oldXML) {
                                // Translation for the old XML structure
-                               if ($fieldname == "diaspora_handle") {
-                                       $fieldname = "author";
+                               if ($fieldname == 'diaspora_handle') {
+                                       $fieldname = 'author';
                                }
-                               if ($fieldname == "participant_handles") {
-                                       $fieldname = "participants";
+                               if ($fieldname == 'participant_handles') {
+                                       $fieldname = 'participants';
                                }
-                               if (in_array($type, ["like", "participation"])) {
-                                       if ($fieldname == "target_type") {
-                                               $fieldname = "parent_type";
+                               if (in_array($type, ['like', 'participation'])) {
+                                       if ($fieldname == 'target_type') {
+                                               $fieldname = 'parent_type';
                                        }
                                }
-                               if ($fieldname == "sender_handle") {
-                                       $fieldname = "author";
+                               if ($fieldname == 'sender_handle') {
+                                       $fieldname = 'author';
                                }
-                               if ($fieldname == "recipient_handle") {
-                                       $fieldname = "recipient";
+                               if ($fieldname == 'recipient_handle') {
+                                       $fieldname = 'recipient';
                                }
-                               if ($fieldname == "root_diaspora_id") {
-                                       $fieldname = "root_author";
+                               if ($fieldname == 'root_diaspora_id') {
+                                       $fieldname = 'root_author';
                                }
-                               if ($type == "status_message") {
-                                       if ($fieldname == "raw_message") {
-                                               $fieldname = "text";
+                               if ($type == 'status_message') {
+                                       if ($fieldname == 'raw_message') {
+                                               $fieldname = 'text';
                                        }
                                }
-                               if ($type == "retraction") {
-                                       if ($fieldname == "post_guid") {
-                                               $fieldname = "target_guid";
+                               if ($type == 'retraction') {
+                                       if ($fieldname == 'post_guid') {
+                                               $fieldname = 'target_guid';
                                        }
-                                       if ($fieldname == "type") {
-                                               $fieldname = "target_type";
+                                       if ($fieldname == 'type') {
+                                               $fieldname = 'target_type';
                                        }
                                }
                        }
 
-                       if (($fieldname == "author_signature") && ($entry != "")) {
+                       if (($fieldname == 'author_signature') && ($entry != '')) {
                                $author_signature = base64_decode($entry);
-                       } elseif (($fieldname == "parent_author_signature") && ($entry != "")) {
+                       } elseif (($fieldname == 'parent_author_signature') && ($entry != '')) {
                                $parent_author_signature = base64_decode($entry);
-                       } elseif (!in_array($fieldname, ["author_signature", "parent_author_signature", "target_author_signature"])) {
-                               if ($signed_data != "") {
-                                       $signed_data .= ";";
+                       } elseif (!in_array($fieldname, ['author_signature', 'parent_author_signature', 'target_author_signature'])) {
+                               if ($signed_data != '') {
+                                       $signed_data .= ';';
                                }
 
                                $signed_data .= $entry;
                        }
-                       if (!in_array($fieldname, ["parent_author_signature", "target_author_signature"])
-                               || ($orig_type == "relayable_retraction")
+                       if (!in_array($fieldname, ['parent_author_signature', 'target_author_signature'])
+                               || ($orig_type == 'relayable_retraction')
                        ) {
                                XML::copy($entry, $fields, $fieldname);
                        }
                }
 
                // This is something that shouldn't happen at all.
-               if (in_array($type, ["status_message", "reshare", "profile"])) {
-                       if ($msg["author"] != $fields->author) {
-                               Logger::notice("Message handle is not the same as envelope sender. Quitting this message.");
+               if (in_array($type, ['status_message', 'reshare', 'profile'])) {
+                       if ($msg['author'] != $fields->author) {
+                               Logger::notice('Message handle is not the same as envelope sender. Quitting this message.', ['author1' => $msg['author'], 'author2' => $fields->author]);
                                return false;
                        }
                }
 
                // Only some message types have signatures. So we quit here for the other types.
-               if (!in_array($type, ["comment", "like"])) {
+               if (!in_array($type, ['comment', 'like'])) {
+                       return $fields;
+               }
+
+               if (!isset($author_signature) && ($msg['author'] == $fields->author)) {
+                       Logger::debug('No author signature, but the sender matches the author', ['type' => $type, 'msg-author' => $msg['author'], 'message' => $msg['message']]);
                        return $fields;
                }
+
                // No author_signature? This is a must, so we quit.
                if (!isset($author_signature)) {
-                       Logger::info("No author signature for type ".$type." - Message: ".$msg["message"]);
+                       Logger::info('No author signature', ['type' => $type, 'msg-author' => $msg['author'], 'fields-author' => $fields->author, 'message' => $msg['message']]);
                        return false;
                }
 
                if (isset($parent_author_signature)) {
-                       $key = self::key($msg["author"]);
+                       $key = self::key($msg['author']);
                        if (empty($key)) {
-                               Logger::info('No key found for parent', ['author' => $msg["author"]]);
+                               Logger::info('No key found for parent', ['author' => $msg['author']]);
                                return false;
                        }
 
-                       if (!Crypto::rsaVerify($signed_data, $parent_author_signature, $key, "sha256")) {
-                               Logger::info("No valid parent author signature for parent author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$parent_author_signature);
+                       if (!Crypto::rsaVerify($signed_data, $parent_author_signature, $key, 'sha256')) {
+                               Logger::info('No valid parent author signature', ['author' => $msg['author'], 'type' => $type, 'signed data' => $signed_data, 'message'  => $msg['message'], 'signature' => $parent_author_signature]);
                                return false;
                        }
                }
@@ -726,8 +745,8 @@ class Diaspora
                        return false;
                }
 
-               if (!Crypto::rsaVerify($signed_data, $author_signature, $key, "sha256")) {
-                       Logger::info("No valid author signature for author ".$fields->author. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$author_signature);
+               if (!Crypto::rsaVerify($signed_data, $author_signature, $key, 'sha256')) {
+                       Logger::info('No valid author signature for author', ['author' => $fields->author, 'type' => $type, 'signed data' => $signed_data, 'message'  => $msg['message'], 'signature' => $author_signature]);
                        return false;
                } else {
                        return $fields;
@@ -743,18 +762,18 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function key($handle)
+       private static function key(string $handle = null): string
        {
                $handle = strval($handle);
 
-               Logger::notice("Fetching diaspora key for: ".$handle);
+               Logger::notice('Fetching diaspora key', ['handle' => $handle, 'callstack' => System::callstack(20)]);
 
-               $r = FContact::getByURL($handle);
-               if ($r) {
-                       return $r["pubkey"];
+               $fcontact = FContact::getByURL($handle);
+               if (!empty($fcontact['pubkey'])) {
+                       return $fcontact['pubkey'];
                }
 
-               return "";
+               return '';
        }
 
        /**
@@ -766,7 +785,7 @@ class Diaspora
         * @return string the handle
         * @throws \Exception
         */
-       private static function handleFromContact($contact_id, $pcontact_id = 0)
+       private static function handleFromContact(int $contact_id, int $pcontact_id = 0): string
        {
                $handle = '';
 
@@ -799,7 +818,7 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function contactByHandle($uid, $handle)
+       private static function contactByHandle(int $uid, string $handle): array
        {
                return Contact::getByURL($handle, null, [], $uid);
        }
@@ -813,7 +832,7 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function isSupportedByContactUrl($url, $update = null)
+       public static function isSupportedByContactUrl(string $url, $update = null)
        {
                return !empty(FContact::getByURL($url, $update));
        }
@@ -827,7 +846,7 @@ class Diaspora
         *
         * @return bool is the contact allowed to post?
         */
-       private static function postAllow(array $importer, array $contact, $is_comment = false)
+       private static function postAllow(array $importer, array $contact, bool $is_comment = false): bool
        {
                /*
                 * Perhaps we were already sharing with this person. Now they're sharing with us.
@@ -837,8 +856,7 @@ class Diaspora
                // It is deactivated by now, due to side effects. See issue https://github.com/friendica/friendica/pull/4033
                // It is not removed by now. Possibly the code is needed?
                //if (!$is_comment && $contact["rel"] == Contact::FOLLOWER && in_array($importer["page-flags"], array(User::PAGE_FLAGS_FREELOVE))) {
-               //      DBA::update(
-               //              'contact',
+               //      Contact::update(
                //              array('rel' => Contact::FRIEND, 'writable' => true),
                //              array('id' => $contact["id"], 'uid' => $contact["uid"])
                //      );
@@ -851,19 +869,15 @@ class Diaspora
                if (Network::isUrlBlocked($contact['url'])) {
                        return false;
                        // We don't seem to like that person
-               } elseif ($contact["blocked"]) {
+               } elseif ($contact['blocked']) {
                        // Maybe blocked, don't accept.
                        return false;
                        // We are following this person?
-               } elseif (($contact["rel"] == Contact::SHARING) || ($contact["rel"] == Contact::FRIEND)) {
+               } elseif (($contact['rel'] == Contact::SHARING) || ($contact['rel'] == Contact::FRIEND)) {
                        // Yes, then it is fine.
                        return true;
-                       // Is it a post to a community?
-               } elseif (($contact["rel"] == Contact::FOLLOWER) && in_array($importer["page-flags"], [User::PAGE_FLAGS_COMMUNITY, User::PAGE_FLAGS_PRVGROUP])) {
-                       // That's good
-                       return true;
                        // Is the message a global user or a comment?
-               } elseif (($importer["uid"] == 0) || $is_comment) {
+               } elseif (($importer['uid'] == 0) || $is_comment) {
                        // Messages for the global users and comments are always accepted
                        return true;
                }
@@ -878,16 +892,16 @@ class Diaspora
         * @param string $handle     The checked handle in the format user@domain.tld
         * @param bool   $is_comment Is the check for a comment?
         *
-        * @return array The contact data
+        * @return array|bool The contact data or false on error
         * @throws \Exception
         */
-       private static function allowedContactByHandle(array $importer, $handle, $is_comment = false)
+       private static function allowedContactByHandle(array $importer, string $handle, bool $is_comment = false)
        {
-               $contact = self::contactByHandle($importer["uid"], $handle);
+               $contact = self::contactByHandle($importer['uid'], $handle);
                if (!$contact) {
-                       Logger::notice("A Contact for handle ".$handle." and user ".$importer["uid"]." was not found");
+                       Logger::notice('A Contact for handle ' . $handle . ' and user ' . $importer['uid'] . ' was not found');
                        // If a contact isn't found, we accept it anyway if it is a comment
-                       if ($is_comment && ($importer["uid"] != 0)) {
+                       if ($is_comment && ($importer['uid'] != 0)) {
                                return self::contactByHandle(0, $handle);
                        } elseif ($is_comment) {
                                return $importer;
@@ -897,7 +911,7 @@ class Diaspora
                }
 
                if (!self::postAllow($importer, $contact, $is_comment)) {
-                       Logger::notice("The handle: ".$handle." is not allowed to post to user ".$importer["uid"]);
+                       Logger::notice('The handle: ' . $handle . ' is not allowed to post to user ' . $importer['uid']);
                        return false;
                }
                return $contact;
@@ -912,12 +926,12 @@ class Diaspora
         * @return int|bool message id if the message already was stored into the system - or false.
         * @throws \Exception
         */
-       private static function messageExists($uid, $guid)
+       private static function messageExists(int $uid, string $guid)
        {
                $item = Post::selectFirst(['id'], ['uid' => $uid, 'guid' => $guid]);
                if (DBA::isResult($item)) {
-                       Logger::notice("message ".$guid." already exists for user ".$uid);
-                       return $item["id"];
+                       Logger::notice('Message ' . $guid . ' already exists for user ' . $uid);
+                       return $item['id'];
                }
 
                return false;
@@ -931,13 +945,12 @@ class Diaspora
         */
        private static function fetchGuid(array $item)
        {
-               $expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
                preg_replace_callback(
-                       $expression,
+                       "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism",
                        function ($match) use ($item) {
                                self::fetchGuidSub($match, $item);
                        },
-                       $item["body"]
+                       $item['body']
                );
 
                preg_replace_callback(
@@ -945,7 +958,7 @@ class Diaspora
                        function ($match) use ($item) {
                                self::fetchGuidSub($match, $item);
                        },
-                       $item["body"]
+                       $item['body']
                );
        }
 
@@ -958,7 +971,7 @@ class Diaspora
         *
         * @return string the replaced string
         */
-       public static function replacePeopleGuid($body, $author_link)
+       public static function replacePeopleGuid(string $body, string $author_link): string
        {
                $return = preg_replace_callback(
                        "&\[url=/people/([^\[\]]*)\](.*)\[\/url\]&Usi",
@@ -970,11 +983,11 @@ class Diaspora
                                $handle = FContact::getUrlByGuid($match[1]);
 
                                if ($handle) {
-                                       $return = '@[url='.$handle.']'.$match[2].'[/url]';
+                                       $return = '@[url=' . $handle . ']' . $match[2] . '[/url]';
                                } else {
                                        // No local match, restoring absolute remote URL from author scheme and host
                                        $author_url = parse_url($author_link);
-                                       $return = '[url='.$author_url['scheme'].'://'.$author_url['host'].'/people/'.$match[1].']'.$match[2].'[/url]';
+                                       $return = '[url=' . $author_url['scheme'] . '://' . $author_url['host'] . '/people/' . $match[1] . ']' . $match[2] . '[/url]';
                                }
 
                                return $return;
@@ -994,10 +1007,10 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function fetchGuidSub($match, $item)
+       private static function fetchGuidSub(array $match, array $item)
        {
-               if (!self::storeByGuid($match[1], $item["author-link"])) {
-                       self::storeByGuid($match[1], $item["owner-link"]);
+               if (!self::storeByGuid($match[1], $item['author-link'], true)) {
+                       self::storeByGuid($match[1], $item['owner-link'], true);
                }
        }
 
@@ -1006,23 +1019,23 @@ class Diaspora
         *
         * @param string $guid   the message guid
         * @param string $server The server address
-        * @param int    $uid    The user id of the user
+        * @param bool   $force  Forced fetch
         *
-        * @return int the message id of the stored message or false
+        * @return int|bool the message id of the stored message or false
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function storeByGuid($guid, $server, $uid = 0)
+       public static function storeByGuid(string $guid, string $server, bool $force)
        {
                $serverparts = parse_url($server);
 
-               if (empty($serverparts["host"]) || empty($serverparts["scheme"])) {
+               if (empty($serverparts['host']) || empty($serverparts['scheme'])) {
                        return false;
                }
 
-               $server = $serverparts["scheme"]."://".$serverparts["host"];
+               $server = $serverparts['scheme'] . '://' . $serverparts['host'];
 
-               Logger::info("Trying to fetch item ".$guid." from ".$server);
+               Logger::info('Trying to fetch item ' . $guid . ' from ' . $server);
 
                $msg = self::message($guid, $server);
 
@@ -1030,10 +1043,10 @@ class Diaspora
                        return false;
                }
 
-               Logger::info("Successfully fetched item ".$guid." from ".$server);
+               Logger::info('Successfully fetched item ' . $guid . ' from ' . $server);
 
                // Now call the dispatcher
-               return self::dispatchPublic($msg, true);
+               return self::dispatchPublic($msg, $force ? self::FORCED_FETCH : self::FETCHED);
        }
 
        /**
@@ -1049,25 +1062,25 @@ class Diaspora
         *      'key' => The public key of the author
         * @throws \Exception
         */
-       public static function message($guid, $server, $level = 0)
+       public static function message(string $guid, string $server, int $level = 0)
        {
                if ($level > 5) {
                        return false;
                }
 
                // This will work for new Diaspora servers and Friendica servers from 3.5
-               $source_url = $server."/fetch/post/".urlencode($guid);
+               $source_url = $server . '/fetch/post/' . urlencode($guid);
 
-               Logger::info("Fetch post from ".$source_url);
+               Logger::info('Fetch post from ' . $source_url);
 
-               $envelope = DI::httpClient()->fetch($source_url);
+               $envelope = DI::httpClient()->fetch($source_url, HttpClientAccept::MAGIC);
                if ($envelope) {
-                       Logger::info("Envelope was fetched.");
+                       Logger::info('Envelope was fetched.');
                        $x = self::verifyMagicEnvelope($envelope);
                        if (!$x) {
-                               Logger::info("Envelope could not be verified.");
+                               Logger::info('Envelope could not be verified.');
                        } else {
-                               Logger::info("Envelope was verified.");
+                               Logger::info('Envelope was verified.');
                        }
                } else {
                        $x = false;
@@ -1085,20 +1098,20 @@ class Diaspora
 
                if ($source_xml->post->reshare) {
                        // Reshare of a reshare - old Diaspora version
-                       Logger::info("Message is a reshare");
+                       Logger::info('Message is a reshare');
                        return self::message($source_xml->post->reshare->root_guid, $server, ++$level);
-               } elseif ($source_xml->getName() == "reshare") {
+               } elseif ($source_xml->getName() == 'reshare') {
                        // Reshare of a reshare - new Diaspora version
-                       Logger::info("Message is a new reshare");
+                       Logger::info('Message is a new reshare');
                        return self::message($source_xml->root_guid, $server, ++$level);
                }
 
-               $author = "";
+               $author = '';
 
                // Fetch the author - for the old and the new Diaspora version
                if ($source_xml->post->status_message && $source_xml->post->status_message->diaspora_handle) {
                        $author = (string)$source_xml->post->status_message->diaspora_handle;
-               } elseif ($source_xml->author && ($source_xml->getName() == "status_message")) {
+               } elseif ($source_xml->author && ($source_xml->getName() == 'status_message')) {
                        $author = (string)$source_xml->author;
                }
 
@@ -1108,26 +1121,27 @@ class Diaspora
                        return false;
                }
 
-               $msg = ["message" => $x, "author" => $author];
-
-               $msg["key"] = self::key($msg["author"]);
-
-               return $msg;
+               return [
+                       'message' => $x,
+                       'author' => $author,
+                       'key' => self::key($author)
+               ];
        }
 
        /**
         * Fetches an item with a given URL
         *
         * @param string $url the message url
+        * @param int $uid User id
         *
-        * @return int the message id of the stored message or false
+        * @return int|bool the message id of the stored message or false
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function fetchByURL($url, $uid = 0)
+       public static function fetchByURL(string $url, int $uid = 0)
        {
                // Check for Diaspora (and Friendica) typical paths
-               if (!preg_match("=(https?://.+)/(?:posts|display|objects)/([a-zA-Z0-9-_@.:%]+[a-zA-Z0-9])=i", $url, $matches)) {
+               if (!preg_match('=(https?://.+)/(?:posts|display|objects)/([a-zA-Z0-9-_@.:%]+[a-zA-Z0-9])=i', $url, $matches)) {
                        Logger::info('Invalid url', ['url' => $url]);
                        return false;
                }
@@ -1141,7 +1155,7 @@ class Diaspora
                }
 
                Logger::info('Fetch GUID from origin', ['guid' => $guid, 'server' => $matches[1]]);
-               $ret = self::storeByGuid($guid, $matches[1], $uid);
+               $ret = self::storeByGuid($guid, $matches[1], true);
                Logger::info('Result', ['ret' => $ret]);
 
                $item = Post::selectFirst(['id'], ['guid' => $guid, 'uid' => $uid]);
@@ -1162,38 +1176,39 @@ class Diaspora
         * @param string $author  The handle of the item
         * @param array  $contact The contact of the item owner
         *
-        * @return array the item record
+        * @return array|bool the item record or false on failure
         * @throws \Exception
         */
-       private static function parentItem($uid, $guid, $author, array $contact)
+       private static function parentItem(int $uid, string $guid, string $author, array $contact)
        {
                $fields = ['id', 'parent', 'body', 'wall', 'uri', 'guid', 'private', 'origin',
                        'author-name', 'author-link', 'author-avatar', 'gravity',
                        'owner-name', 'owner-link', 'owner-avatar'];
+
                $condition = ['uid' => $uid, 'guid' => $guid];
                $item = Post::selectFirst($fields, $condition);
 
                if (!DBA::isResult($item)) {
                        $person = FContact::getByURL($author);
-                       $result = self::storeByGuid($guid, $person["url"], $uid);
+                       $result = self::storeByGuid($guid, $person['url'], false);
 
                        // We don't have an url for items that arrived at the public dispatcher
-                       if (!$result && !empty($contact["url"])) {
-                               $result = self::storeByGuid($guid, $contact["url"], $uid);
+                       if (!$result && !empty($contact['url'])) {
+                               $result = self::storeByGuid($guid, $contact['url'], false);
                        }
 
                        if ($result) {
-                               Logger::info("Fetched missing item ".$guid." - result: ".$result);
+                               Logger::info('Fetched missing item ' . $guid . ' - result: ' . $result);
 
                                $item = Post::selectFirst($fields, $condition);
                        }
                }
 
                if (!DBA::isResult($item)) {
-                       Logger::notice("parent item not found: parent: ".$guid." - user: ".$uid);
+                       Logger::notice('Parent item not found: parent: ' . $guid . ' - user: ' . $uid);
                        return false;
                } else {
-                       Logger::notice("parent item found: parent: ".$guid." - user: ".$uid);
+                       Logger::notice('Parent item found: parent: ' . $guid . ' - user: ' . $uid);
                        return $item;
                }
        }
@@ -1210,19 +1225,22 @@ class Diaspora
         *      'network' => network type
         * @throws \Exception
         */
-       private static function authorContactByUrl($def_contact, $person, $uid)
+       private static function authorContactByUrl(array $def_contact, array $person, int $uid): array
        {
-               $condition = ['nurl' => Strings::normaliseLink($person["url"]), 'uid' => $uid];
+               $condition = ['nurl' => Strings::normaliseLink($person['url']), 'uid' => $uid];
                $contact = DBA::selectFirst('contact', ['id', 'network'], $condition);
                if (DBA::isResult($contact)) {
-                       $cid = $contact["id"];
-                       $network = $contact["network"];
+                       $cid = $contact['id'];
+                       $network = $contact['network'];
                } else {
-                       $cid = $def_contact["id"];
+                       $cid = $def_contact['id'];
                        $network = Protocol::DIASPORA;
                }
 
-               return ["cid" => $cid, "network" => $network];
+               return [
+                       'cid' => $cid,
+                       'network' => $network
+               ];
        }
 
        /**
@@ -1232,9 +1250,9 @@ class Diaspora
         *
         * @return bool is it a hubzilla server?
         */
-       private static function isHubzilla($url)
+       private static function isHubzilla(string $url): bool
        {
-               return(strstr($url, '/channel/'));
+               return strstr($url, '/channel/');
        }
 
        /**
@@ -1248,7 +1266,7 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function plink(string $addr, string $guid, string $parent_guid = '')
+       private static function plink(string $addr, string $guid, string $parent_guid = ''): string
        {
                $contact = Contact::getByURL($addr);
                if (empty($contact)) {
@@ -1306,30 +1324,30 @@ class Diaspora
         * Receives account migration
         *
         * @param array  $importer Array of the importer user
-        * @param object $data     The message object
+        * @param SimpleXMLElement $data The message object
         *
         * @return bool Success
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function receiveAccountMigration(array $importer, $data)
+       private static function receiveAccountMigration(array $importer, SimpleXMLElement $data): bool
        {
                $old_handle = XML::unescape($data->author);
                $new_handle = XML::unescape($data->profile->author);
                $signature = XML::unescape($data->signature);
 
-               $contact = self::contactByHandle($importer["uid"], $old_handle);
+               $contact = self::contactByHandle($importer['uid'], $old_handle);
                if (!$contact) {
-                       Logger::notice("cannot find contact for sender: ".$old_handle." and user ".$importer["uid"]);
+                       Logger::notice('Cannot find contact for sender: ' . $old_handle . ' and user ' . $importer['uid']);
                        return false;
                }
 
-               Logger::notice("Got migration for ".$old_handle.", to ".$new_handle." with user ".$importer["uid"]);
+               Logger::notice('Got migration for ' . $old_handle . ', to ' . $new_handle . ' with user ' . $importer['uid']);
 
                // Check signature
-               $signed_text = 'AccountMigration:'.$old_handle.':'.$new_handle;
+               $signed_text = 'AccountMigration:' . $old_handle . ':' . $new_handle;
                $key = self::key($old_handle);
-               if (!Crypto::rsaVerify($signed_text, $signature, $key, "sha256")) {
+               if (!Crypto::rsaVerify($signed_text, $signature, $key, 'sha256')) {
                        Logger::notice('No valid signature for migration.');
                        return false;
                }
@@ -1340,15 +1358,21 @@ class Diaspora
                // change the technical stuff in contact
                $data = Probe::uri($new_handle);
                if ($data['network'] == Protocol::PHANTOM) {
-                       Logger::notice('Account for '.$new_handle." couldn't be probed.");
+                       Logger::notice("Account for " . $new_handle . " couldn't be probed.");
                        return false;
                }
 
-               $fields = ['url' => $data['url'], 'nurl' => Strings::normaliseLink($data['url']),
-                               'name' => $data['name'], 'nick' => $data['nick'],
-                               'addr' => $data['addr'], 'batch' => $data['batch'],
-                               'notify' => $data['notify'], 'poll' => $data['poll'],
-                               'network' => $data['network']];
+               $fields = [
+                       'url'     => $data['url'],
+                       'nurl'    => Strings::normaliseLink($data['url']),
+                       'name'    => $data['name'],
+                       'nick'    => $data['nick'],
+                       'addr'    => $data['addr'],
+                       'batch'   => $data['batch'],
+                       'notify'  => $data['notify'],
+                       'poll'    => $data['poll'],
+                       'network' => $data['network'],
+               ];
 
                Contact::update($fields, ['addr' => $old_handle]);
 
@@ -1360,18 +1384,18 @@ class Diaspora
        /**
         * Processes an account deletion
         *
-        * @param object $data The message object
+        * @param SimpleXMLElement $data The message object
         *
         * @return bool Success
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         */
-       private static function receiveAccountDeletion($data)
+       private static function receiveAccountDeletion(SimpleXMLElement $data): bool
        {
                $author = XML::unescape($data->author);
 
                $contacts = DBA::select('contact', ['id'], ['addr' => $author]);
                while ($contact = DBA::fetch($contacts)) {
-                       Contact::remove($contact["id"]);
+                       Contact::remove($contact['id']);
                }
                DBA::close($contacts);
 
@@ -1387,26 +1411,26 @@ class Diaspora
         * @param string  $guid      Message guid
         * @param boolean $onlyfound Only return uri when found in the database
         *
-        * @return string The constructed uri or the one from our database
+        * @return string The constructed uri or the one from our database or empty string on if $onlyfound is true
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function getUriFromGuid($author, $guid, $onlyfound = false)
+       private static function getUriFromGuid(string $author, string $guid, bool $onlyfound = false): string
        {
                $item = Post::selectFirst(['uri'], ['guid' => $guid]);
                if (DBA::isResult($item)) {
-                       return $item["uri"];
+                       return $item['uri'];
                } elseif (!$onlyfound) {
                        $person = FContact::getByURL($author);
 
                        $parts = parse_url($person['url']);
                        unset($parts['path']);
-                       $host_url = Network::unparseURL($parts);
+                       $host_url = (string)Uri::fromParts($parts);
 
                        return $host_url . '/objects/' . $guid;
                }
 
-               return "";
+               return '';
        }
 
        /**
@@ -1446,17 +1470,17 @@ class Diaspora
        /**
         * Processes an incoming comment
         *
-        * @param array  $importer Array of the importer user
-        * @param string $sender   The sender of the message
-        * @param object $data     The message object
-        * @param string $xml      The original XML of the message
-        * @param bool   $fetched  The message had been fetched and not pushed
+        * @param array  $importer  Array of the importer user
+        * @param string $sender    The sender of the message
+        * @param SimpleXMLElement $data      The message object
+        * @param string $xml       The original XML of the message
+        * @param int    $direction Indicates if the message had been fetched or pushed (self::PUSHED, self::FETCHED, self::FORCED_FETCH)
         *
         * @return int The message id of the generated comment or "false" if there was an error
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function receiveComment(array $importer, $sender, $data, $xml, bool $fetched)
+       private static function receiveComment(array $importer, string $sender, SimpleXMLElement $data, string $xml, int $direction): bool
        {
                $author = XML::unescape($data->author);
                $guid = XML::unescape($data->guid);
@@ -1471,9 +1495,9 @@ class Diaspora
 
                if (isset($data->thread_parent_guid)) {
                        $thread_parent_guid = XML::unescape($data->thread_parent_guid);
-                       $thr_parent = self::getUriFromGuid("", $thread_parent_guid, true);
+                       $thr_parent = self::getUriFromGuid('', $thread_parent_guid, true);
                } else {
-                       $thr_parent = "";
+                       $thr_parent = '';
                }
 
                $contact = self::allowedContactByHandle($importer, $sender, true);
@@ -1485,77 +1509,72 @@ class Diaspora
                        GServer::setProtocol($contact['gsid'], Post\DeliveryData::DIASPORA);
                }
 
-               $message_id = self::messageExists($importer["uid"], $guid);
+               $message_id = self::messageExists($importer['uid'], $guid);
                if ($message_id) {
                        return true;
                }
 
-               $toplevel_parent_item = self::parentItem($importer["uid"], $parent_guid, $author, $contact);
+               $toplevel_parent_item = self::parentItem($importer['uid'], $parent_guid, $author, $contact);
                if (!$toplevel_parent_item) {
                        return false;
                }
 
                $person = FContact::getByURL($author);
                if (!is_array($person)) {
-                       Logger::notice("unable to find author details");
+                       Logger::notice('Unable to find author details');
                        return false;
                }
 
                // Fetch the contact id - if we know this contact
-               $author_contact = self::authorContactByUrl($contact, $person, $importer["uid"]);
+               $author_contact = self::authorContactByUrl($contact, $person, $importer['uid']);
 
                $datarray = [];
 
-               $datarray["uid"] = $importer["uid"];
-               $datarray["contact-id"] = $author_contact["cid"];
-               $datarray["network"]  = $author_contact["network"];
+               $datarray['uid'] = $importer['uid'];
+               $datarray['contact-id'] = $author_contact['cid'];
+               $datarray['network']  = $author_contact['network'];
 
-               $datarray["author-link"] = $person["url"];
-               $datarray["author-id"] = Contact::getIdForURL($person["url"], 0);
+               $datarray['author-link'] = $person['url'];
+               $datarray['author-id'] = Contact::getIdForURL($person['url'], 0);
 
-               $datarray["owner-link"] = $contact["url"];
-               $datarray["owner-id"] = Contact::getIdForURL($contact["url"], 0);
+               $datarray['owner-link'] = $contact['url'];
+               $datarray['owner-id'] = Contact::getIdForURL($contact['url'], 0);
 
                // Will be overwritten for sharing accounts in Item::insert
-               if ($fetched) {
-                       $datarray["post-reason"] = Item::PR_FETCHED;
-               } elseif ($datarray["uid"] == 0) {
-                       $datarray["post-reason"] = Item::PR_GLOBAL;
-               } else {
-                       $datarray["post-reason"] = Item::PR_COMMENT;
-               }
+               $datarray = self::setDirection($datarray, $direction);
 
-               $datarray["guid"] = $guid;
-               $datarray["uri"] = self::getUriFromGuid($author, $guid);
+               $datarray['guid'] = $guid;
+               $datarray['uri'] = self::getUriFromGuid($author, $guid);
                $datarray['uri-id'] = ItemURI::insert(['uri' => $datarray['uri'], 'guid' => $datarray['guid']]);
 
-               $datarray["verb"] = Activity::POST;
-               $datarray["gravity"] = GRAVITY_COMMENT;
+               $datarray['verb'] = Activity::POST;
+               $datarray['gravity'] = GRAVITY_COMMENT;
 
                $datarray['thr-parent'] = $thr_parent ?: $toplevel_parent_item['uri'];
 
-               $datarray["object-type"] = Activity\ObjectType::COMMENT;
-               $datarray["post-type"] = Item::PT_NOTE;
+               $datarray['object-type'] = Activity\ObjectType::COMMENT;
+               $datarray['post-type'] = Item::PT_NOTE;
+
+               $datarray['protocol'] = Conversation::PARCEL_DIASPORA;
+               $datarray['source'] = $xml;
 
-               $datarray["protocol"] = Conversation::PARCEL_DIASPORA;
-               $datarray["source"] = $xml;
-               $datarray["direction"] = $fetched ? Conversation::PULL : Conversation::PUSH;
+               $datarray = self::setDirection($datarray, $direction);
 
-               $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
+               $datarray['changed'] = $datarray['created'] = $datarray['edited'] = $created_at;
 
-               $datarray["plink"] = self::plink($author, $guid, $toplevel_parent_item['guid']);
+               $datarray['plink'] = self::plink($author, $guid, $toplevel_parent_item['guid']);
                $body = Markdown::toBBCode($text);
 
-               $datarray["body"] = self::replacePeopleGuid($body, $person["url"]);
+               $datarray['body'] = self::replacePeopleGuid($body, $person['url']);
 
                self::storeMentions($datarray['uri-id'], $text);
-               Tag::storeRawTagsFromBody($datarray['uri-id'], $datarray["body"]);
+               Tag::storeRawTagsFromBody($datarray['uri-id'], $datarray['body']);
 
                self::fetchGuid($datarray);
 
                // If we are the origin of the parent we store the original data.
                // We notify our followers during the item storage.
-               if ($toplevel_parent_item["origin"]) {
+               if ($toplevel_parent_item['origin']) {
                        $datarray['diaspora_signed_text'] = json_encode($data);
                }
 
@@ -1571,7 +1590,7 @@ class Diaspora
                }
 
                if ($message_id) {
-                       Logger::info("Stored comment ".$datarray["guid"]." with message id ".$message_id);
+                       Logger::info('Stored comment ' . $datarray['guid'] . ' with message id ' . $message_id);
                        if ($datarray['uid'] == 0) {
                                Item::distribute($message_id, json_encode($data));
                        }
@@ -1585,15 +1604,16 @@ class Diaspora
         *
         * @param array  $importer     Array of the importer user
         * @param array  $contact      The contact of the message
-        * @param object $data         The message object
+        * @param SimpleXMLElement $data         The message object
         * @param array  $msg          Array of the processed message, author handle and key
         * @param object $mesg         The private message
         * @param array  $conversation The conversation record to which this message belongs
         *
         * @return bool "true" if it was successful
         * @throws \Exception
+        * @todo Find type-hint for $mesg and update documentation
         */
-       private static function receiveConversationMessage(array $importer, array $contact, $data, $msg, $mesg, $conversation)
+       private static function receiveConversationMessage(array $importer, array $contact, SimpleXMLElement $data, array $msg, $mesg, array $conversation): bool
        {
                $author = XML::unescape($data->author);
                $guid = XML::unescape($data->guid);
@@ -1615,12 +1635,12 @@ class Diaspora
                $msg_created_at = DateTimeFormat::utc(XML::unescape($mesg->created_at));
 
                if ($msg_conversation_guid != $guid) {
-                       Logger::notice("message conversation guid does not belong to the current conversation.");
+                       Logger::notice('Message conversation guid does not belong to the current conversation.', ['guid' => $guid]);
                        return false;
                }
 
                $body = Markdown::toBBCode($msg_text);
-               $message_uri = $msg_author.":".$msg_guid;
+               $message_uri = $msg_author . ':' . $msg_guid;
 
                $person = FContact::getByURL($msg_author);
 
@@ -1645,12 +1665,12 @@ class Diaspora
         *
         * @param array  $importer Array of the importer user
         * @param array  $msg      Array of the processed message, author handle and key
-        * @param object $data     The message object
+        * @param SimpleXMLElement $data     The message object
         *
         * @return bool Success
         * @throws \Exception
         */
-       private static function receiveConversation(array $importer, $msg, $data)
+       private static function receiveConversation(array $importer, array $msg, SimpleXMLElement $data)
        {
                $author = XML::unescape($data->author);
                $guid = XML::unescape($data->guid);
@@ -1661,11 +1681,11 @@ class Diaspora
                $messages = $data->message;
 
                if (!count($messages)) {
-                       Logger::notice("empty conversation");
+                       Logger::notice('Empty conversation');
                        return false;
                }
 
-               $contact = self::allowedContactByHandle($importer, $msg["author"], true);
+               $contact = self::allowedContactByHandle($importer, $msg['author'], true);
                if (!$contact) {
                        return false;
                }
@@ -1674,7 +1694,7 @@ class Diaspora
                        GServer::setProtocol($contact['gsid'], Post\DeliveryData::DIASPORA);
                }
 
-               $conversation = DBA::selectFirst('conv', [], ['uid' => $importer["uid"], 'guid' => $guid]);
+               $conversation = DBA::selectFirst('conv', [], ['uid' => $importer['uid'], 'guid' => $guid]);
                if (!DBA::isResult($conversation)) {
                        $r = DBA::insert('conv', [
                                'uid'     => $importer['uid'],
@@ -1683,13 +1703,15 @@ class Diaspora
                                'created' => $created_at,
                                'updated' => DateTimeFormat::utcNow(),
                                'subject' => $subject,
-                               'recips'  => $participants]);
+                               'recips'  => $participants
+                       ]);
+
                        if ($r) {
-                               $conversation = DBA::selectFirst('conv', [], ['uid' => $importer["uid"], 'guid' => $guid]);
+                               $conversation = DBA::selectFirst('conv', [], ['uid' => $importer['uid'], 'guid' => $guid]);
                        }
                }
                if (!$conversation) {
-                       Logger::notice("unable to create conversation.");
+                       Logger::warning('Unable to create conversation.');
                        return false;
                }
 
@@ -1703,15 +1725,16 @@ class Diaspora
        /**
         * Processes "like" messages
         *
-        * @param array  $importer Array of the importer user
-        * @param string $sender   The sender of the message
-        * @param object $data     The message object
+        * @param array  $importer  Array of the importer user
+        * @param string $sender    The sender of the message
+        * @param SimpleXMLElement $data      The message object
+        * @param int    $direction Indicates if the message had been fetched or pushed (self::PUSHED, self::FETCHED, self::FORCED_FETCH)
         *
-        * @return int The message id of the generated like or "false" if there was an error
+        * @return bool Success or failure
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function receiveLike(array $importer, $sender, $data, bool $fetched)
+       private static function receiveLike(array $importer, string $sender, SimpleXMLElement $data, int $direction): bool
        {
                $author = XML::unescape($data->author);
                $guid = XML::unescape($data->guid);
@@ -1721,7 +1744,7 @@ class Diaspora
 
                // likes on comments aren't supported by Diaspora - only on posts
                // But maybe this will be supported in the future, so we will accept it.
-               if (!in_array($parent_type, ["Post", "Comment"])) {
+               if (!in_array($parent_type, ['Post', 'Comment'])) {
                        return false;
                }
 
@@ -1734,28 +1757,28 @@ class Diaspora
                        GServer::setProtocol($contact['gsid'], Post\DeliveryData::DIASPORA);
                }
 
-               $message_id = self::messageExists($importer["uid"], $guid);
+               $message_id = self::messageExists($importer['uid'], $guid);
                if ($message_id) {
                        return true;
                }
 
-               $toplevel_parent_item = self::parentItem($importer["uid"], $parent_guid, $author, $contact);
+               $toplevel_parent_item = self::parentItem($importer['uid'], $parent_guid, $author, $contact);
                if (!$toplevel_parent_item) {
                        return false;
                }
 
                $person = FContact::getByURL($author);
                if (!is_array($person)) {
-                       Logger::notice("unable to find author details");
+                       Logger::notice('Unable to find author details');
                        return false;
                }
 
                // Fetch the contact id - if we know this contact
-               $author_contact = self::authorContactByUrl($contact, $person, $importer["uid"]);
+               $author_contact = self::authorContactByUrl($contact, $person, $importer['uid']);
 
                // "positive" = "false" would be a Dislike - wich isn't currently supported by Diaspora
                // We would accept this anyhow.
-               if ($positive == "true") {
+               if ($positive == 'true') {
                        $verb = Activity::LIKE;
                } else {
                        $verb = Activity::DISLIKE;
@@ -1763,36 +1786,37 @@ class Diaspora
 
                $datarray = [];
 
-               $datarray["protocol"] = Conversation::PARCEL_DIASPORA;
-               $datarray["direction"] = $fetched ? Conversation::PULL : Conversation::PUSH;
+               $datarray['protocol'] = Conversation::PARCEL_DIASPORA;
 
-               $datarray["uid"] = $importer["uid"];
-               $datarray["contact-id"] = $author_contact["cid"];
-               $datarray["network"]  = $author_contact["network"];
+               $datarray['uid'] = $importer['uid'];
+               $datarray['contact-id'] = $author_contact['cid'];
+               $datarray['network']  = $author_contact['network'];
 
-               $datarray["owner-link"] = $datarray["author-link"] = $person["url"];
-               $datarray["owner-id"] = $datarray["author-id"] = Contact::getIdForURL($person["url"], 0);
+               $datarray = self::setDirection($datarray, $direction);
 
-               $datarray["guid"] = $guid;
-               $datarray["uri"] = self::getUriFromGuid($author, $guid);
+               $datarray['owner-link'] = $datarray['author-link'] = $person['url'];
+               $datarray['owner-id'] = $datarray['author-id'] = Contact::getIdForURL($person['url'], 0);
 
-               $datarray["verb"] = $verb;
-               $datarray["gravity"] = GRAVITY_ACTIVITY;
+               $datarray['guid'] = $guid;
+               $datarray['uri'] = self::getUriFromGuid($author, $guid);
+
+               $datarray['verb'] = $verb;
+               $datarray['gravity'] = GRAVITY_ACTIVITY;
                $datarray['thr-parent'] = $toplevel_parent_item['uri'];
 
-               $datarray["object-type"] = Activity\ObjectType::NOTE;
+               $datarray['object-type'] = Activity\ObjectType::NOTE;
 
-               $datarray["body"] = $verb;
+               $datarray['body'] = $verb;
 
                // Diaspora doesn't provide a date for likes
-               $datarray["changed"] = $datarray["created"] = $datarray["edited"] = DateTimeFormat::utcNow();
+               $datarray['changed'] = $datarray['created'] = $datarray['edited'] = DateTimeFormat::utcNow();
 
                // like on comments have the comment as parent. So we need to fetch the toplevel parent
                if ($toplevel_parent_item['gravity'] != GRAVITY_PARENT) {
                        $toplevel = Post::selectFirst(['origin'], ['id' => $toplevel_parent_item['parent']]);
-                       $origin = $toplevel["origin"];
+                       $origin = $toplevel['origin'];
                } else {
-                       $origin = $toplevel_parent_item["origin"];
+                       $origin = $toplevel_parent_item['origin'];
                }
 
                // If we are the origin of the parent we store the original data.
@@ -1813,7 +1837,7 @@ class Diaspora
                }
 
                if ($message_id) {
-                       Logger::info("Stored like ".$datarray["guid"]." with message id ".$message_id);
+                       Logger::info('Stored like ' . $datarray['guid'] . ' with message id ' . $message_id);
                        if ($datarray['uid'] == 0) {
                                Item::distribute($message_id, json_encode($data));
                        }
@@ -1826,12 +1850,12 @@ class Diaspora
         * Processes private messages
         *
         * @param array  $importer Array of the importer user
-        * @param object $data     The message object
+        * @param SimpleXMLElement $data     The message object
         *
         * @return bool Success?
         * @throws \Exception
         */
-       private static function receiveMessage(array $importer, $data)
+       private static function receiveMessage(array $importer, SimpleXMLElement $data): bool
        {
                $author = XML::unescape($data->author);
                $guid = XML::unescape($data->guid);
@@ -1850,25 +1874,25 @@ class Diaspora
 
                $conversation = null;
 
-               $condition = ['uid' => $importer["uid"], 'guid' => $conversation_guid];
+               $condition = ['uid' => $importer['uid'], 'guid' => $conversation_guid];
                $conversation = DBA::selectFirst('conv', [], $condition);
 
                if (!DBA::isResult($conversation)) {
-                       Logger::notice("conversation not available.");
+                       Logger::notice('Conversation not available.');
                        return false;
                }
 
-               $message_uri = $author.":".$guid;
+               $message_uri = $author . ':' . $guid;
 
                $person = FContact::getByURL($author);
                if (!$person) {
-                       Logger::notice("unable to find author details");
+                       Logger::notice('Unable to find author details');
                        return false;
                }
 
                $body = Markdown::toBBCode($text);
 
-               $body = self::replacePeopleGuid($body, $person["url"]);
+               $body = self::replacePeopleGuid($body, $person['url']);
 
                return Mail::insert([
                        'uid'        => $importer['uid'],
@@ -1882,7 +1906,7 @@ class Diaspora
                        'body'       => $body,
                        'reply'      => 1,
                        'uri'        => $message_uri,
-                       'parent-uri' => $author.":".$conversation['guid'],
+                       'parent-uri' => $author . ':' . $conversation['guid'],
                        'created'    => $created_at
                ]);
        }
@@ -1890,14 +1914,15 @@ class Diaspora
        /**
         * Processes participations - unsupported by now
         *
-        * @param array  $importer Array of the importer user
-        * @param object $data     The message object
+        * @param array  $importer  Array of the importer user
+        * @param SimpleXMLElement $data      The message object
+        * @param int    $direction Indicates if the message had been fetched or pushed (self::PUSHED, self::FETCHED, self::FORCED_FETCH)
         *
         * @return bool success
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function receiveParticipation(array $importer, $data, bool $fetched)
+       private static function receiveParticipation(array $importer, SimpleXMLElement $data, int $direction): bool
        {
                $author = strtolower(XML::unescape($data->author));
                $guid = XML::unescape($data->guid);
@@ -1912,11 +1937,11 @@ class Diaspora
                        GServer::setProtocol($contact['gsid'], Post\DeliveryData::DIASPORA);
                }
 
-               if (self::messageExists($importer["uid"], $guid)) {
+               if (self::messageExists($importer['uid'], $guid)) {
                        return true;
                }
 
-               $toplevel_parent_item = self::parentItem($importer["uid"], $parent_guid, $author, $contact);
+               $toplevel_parent_item = self::parentItem($importer['uid'], $parent_guid, $author, $contact);
                if (!$toplevel_parent_item) {
                        return false;
                }
@@ -1932,38 +1957,39 @@ class Diaspora
 
                $person = FContact::getByURL($author);
                if (!is_array($person)) {
-                       Logger::notice("Person not found: ".$author);
+                       Logger::notice('Person not found: ' . $author);
                        return false;
                }
 
-               $author_contact = self::authorContactByUrl($contact, $person, $importer["uid"]);
+               $author_contact = self::authorContactByUrl($contact, $person, $importer['uid']);
 
                // Store participation
                $datarray = [];
 
-               $datarray["protocol"] = Conversation::PARCEL_DIASPORA;
-               $datarray["direction"] = $fetched ? Conversation::PULL : Conversation::PUSH;
+               $datarray['protocol'] = Conversation::PARCEL_DIASPORA;
+
+               $datarray['uid'] = $importer['uid'];
+               $datarray['contact-id'] = $author_contact['cid'];
+               $datarray['network']  = $author_contact['network'];
 
-               $datarray["uid"] = $importer["uid"];
-               $datarray["contact-id"] = $author_contact["cid"];
-               $datarray["network"]  = $author_contact["network"];
+               $datarray = self::setDirection($datarray, $direction);
 
-               $datarray["owner-link"] = $datarray["author-link"] = $person["url"];
-               $datarray["owner-id"] = $datarray["author-id"] = Contact::getIdForURL($person["url"], 0);
+               $datarray['owner-link'] = $datarray['author-link'] = $person['url'];
+               $datarray['owner-id'] = $datarray['author-id'] = Contact::getIdForURL($person['url'], 0);
 
-               $datarray["guid"] = $guid;
-               $datarray["uri"] = self::getUriFromGuid($author, $guid);
+               $datarray['guid'] = $guid;
+               $datarray['uri'] = self::getUriFromGuid($author, $guid);
 
-               $datarray["verb"] = Activity::FOLLOW;
-               $datarray["gravity"] = GRAVITY_ACTIVITY;
+               $datarray['verb'] = Activity::FOLLOW;
+               $datarray['gravity'] = GRAVITY_ACTIVITY;
                $datarray['thr-parent'] = $toplevel_parent_item['uri'];
 
-               $datarray["object-type"] = Activity\ObjectType::NOTE;
+               $datarray['object-type'] = Activity\ObjectType::NOTE;
 
-               $datarray["body"] = Activity::FOLLOW;
+               $datarray['body'] = Activity::FOLLOW;
 
                // Diaspora doesn't provide a date for a participation
-               $datarray["changed"] = $datarray["created"] = $datarray["edited"] = DateTimeFormat::utcNow();
+               $datarray['changed'] = $datarray['created'] = $datarray['edited'] = DateTimeFormat::utcNow();
 
                if (Item::isTooOld($datarray)) {
                        Logger::info('Participation is too old', ['created' => $datarray['created'], 'uid' => $datarray['uid'], 'guid' => $datarray['guid']]);
@@ -1975,11 +2001,11 @@ class Diaspora
                Logger::info('Participation stored', ['id' => $message_id, 'guid' => $guid, 'parent_guid' => $parent_guid, 'author' => $author]);
 
                // Send all existing comments and likes to the requesting server
-               $comments = Post::select(['id', 'uri-id', 'parent-author-network', 'author-network', 'verb'],
+               $comments = Post::select(['id', 'uri-id', 'parent-author-network', 'author-network', 'verb', 'gravity'],
                        ['parent' => $toplevel_parent_item['id'], 'gravity' => [GRAVITY_COMMENT, GRAVITY_ACTIVITY]]);
                while ($comment = Post::fetch($comments)) {
-                       if (in_array($comment['verb'], [Activity::FOLLOW, Activity::TAG])) {
-                               Logger::info('participation messages are not relayed', ['item' => $comment['id']]);
+                       if (($comment['gravity'] == GRAVITY_ACTIVITY) && !in_array($comment['verb'], [Activity::LIKE, Activity::DISLIKE])) {
+                               Logger::info('Unsupported activities are not relayed', ['item' => $comment['id'], 'verb' => $comment['verb']]);
                                continue;
                        }
 
@@ -1993,8 +2019,8 @@ class Diaspora
                                continue;
                        }
 
-                       Logger::info('Deliver participation', ['item' => $comment['id'], 'contact' => $author_contact["cid"]]);
-                       if (Worker::add(PRIORITY_HIGH, 'Delivery', Delivery::POST, $comment['id'], $author_contact["cid"])) {
+                       Logger::info('Deliver participation', ['item' => $comment['id'], 'contact' => $author_contact['cid']]);
+                       if (Worker::add(PRIORITY_HIGH, 'Delivery', Delivery::POST, $comment['uri-id'], $author_contact['cid'], $datarray['uid'])) {
                                Post\DeliveryData::incrementQueueCount($comment['uri-id'], 1);
                        }
                }
@@ -2007,7 +2033,7 @@ class Diaspora
         * Processes photos - unneeded
         *
         * @param array  $importer Array of the importer user
-        * @param object $data     The message object
+        * @param SimpleXMLElement $data     The message object
         *
         * @return bool always true
         */
@@ -2036,68 +2062,69 @@ class Diaspora
         * Processes incoming profile updates
         *
         * @param array  $importer Array of the importer user
-        * @param object $data     The message object
+        * @param SimpleXMLElement $data     The message object
         *
         * @return bool Success
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function receiveProfile(array $importer, $data)
+       private static function receiveProfile(array $importer, SimpleXMLElement $data): bool
        {
                $author = strtolower(XML::unescape($data->author));
 
-               $contact = self::contactByHandle($importer["uid"], $author);
+               $contact = self::contactByHandle($importer['uid'], $author);
                if (!$contact) {
                        return false;
                }
 
-               $name = XML::unescape($data->first_name).((strlen($data->last_name)) ? " ".XML::unescape($data->last_name) : "");
+               $name = XML::unescape($data->first_name).((strlen($data->last_name)) ? ' ' . XML::unescape($data->last_name) : '');
                $image_url = XML::unescape($data->image_url);
                $birthday = XML::unescape($data->birthday);
                $about = Markdown::toBBCode(XML::unescape($data->bio));
                $location = Markdown::toBBCode(XML::unescape($data->location));
-               $searchable = (XML::unescape($data->searchable) == "true");
-               $nsfw = (XML::unescape($data->nsfw) == "true");
+               $searchable = (XML::unescape($data->searchable) == 'true');
+               $nsfw = (XML::unescape($data->nsfw) == 'true');
                $tags = XML::unescape($data->tag_string);
 
-               $tags = explode("#", $tags);
+               $tags = explode('#', $tags);
 
                $keywords = [];
                foreach ($tags as $tag) {
                        $tag = trim(strtolower($tag));
-                       if ($tag != "") {
+                       if ($tag != '') {
                                $keywords[] = $tag;
                        }
                }
 
-               $keywords = implode(", ", $keywords);
+               $keywords = implode(', ', $keywords);
 
-               $handle_parts = explode("@", $author);
+               $handle_parts = explode('@', $author);
                $nick = $handle_parts[0];
 
-               if ($name === "") {
+               if ($name === '') {
                        $name = $handle_parts[0];
                }
 
-               if (preg_match("|^https?://|", $image_url) === 0) {
-                       $image_url = "http://".$handle_parts[1].$image_url;
+               if (preg_match('|^https?://|', $image_url) === 0) {
+                       // @TODO No HTTPS here?
+                       $image_url = 'http://' . $handle_parts[1] . $image_url;
                }
 
-               Contact::updateAvatar($contact["id"], $image_url);
+               Contact::updateAvatar($contact['id'], $image_url);
 
                // Generic birthday. We don't know the timezone. The year is irrelevant.
 
-               $birthday = str_replace("1000", "1901", $birthday);
+               $birthday = str_replace('1000', '1901', $birthday);
 
-               if ($birthday != "") {
-                       $birthday = DateTimeFormat::utc($birthday, "Y-m-d");
+               if ($birthday != '') {
+                       $birthday = DateTimeFormat::utc($birthday, 'Y-m-d');
                }
 
                // this is to prevent multiple birthday notifications in a single year
                // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
 
-               if (substr($birthday, 5) === substr($contact["bd"], 5)) {
-                       $birthday = $contact["bd"];
+               if (substr($birthday, 5) === substr($contact['bd'], 5)) {
+                       $birthday = $contact['bd'];
                }
 
                $fields = ['name' => $name, 'location' => $location,
@@ -2111,7 +2138,7 @@ class Diaspora
 
                Contact::update($fields, ['id' => $contact['id']]);
 
-               Logger::info("Profile of contact ".$contact["id"]." stored for user ".$importer["uid"]);
+               Logger::info('Profile of contact ' . $contact['id'] . ' stored for user ' . $importer['uid']);
 
                return true;
        }
@@ -2126,11 +2153,10 @@ class Diaspora
         */
        private static function receiveRequestMakeFriend(array $importer, array $contact)
        {
-               if ($contact["rel"] == Contact::SHARING) {
-                       DBA::update(
-                               'contact',
+               if ($contact['rel'] == Contact::SHARING) {
+                       Contact::update(
                                ['rel' => Contact::FRIEND, 'writable' => true],
-                               ['id' => $contact["id"], 'uid' => $importer["uid"]]
+                               ['id' => $contact['id'], 'uid' => $importer['uid']]
                        );
                }
        }
@@ -2139,12 +2165,12 @@ class Diaspora
         * Processes incoming sharing notification
         *
         * @param array  $importer Array of the importer user
-        * @param object $data     The message object
+        * @param SimpleXMLElement $data     The message object
         *
         * @return bool Success
         * @throws \Exception
         */
-       private static function receiveContactRequest(array $importer, $data)
+       private static function receiveContactRequest(array $importer, SimpleXMLElement $data): bool
        {
                $author = XML::unescape($data->author);
                $recipient = XML::unescape($data->recipient);
@@ -2156,64 +2182,64 @@ class Diaspora
                // the current protocol version doesn't know these fields
                // That means that we will assume their existance
                if (isset($data->following)) {
-                       $following = (XML::unescape($data->following) == "true");
+                       $following = (XML::unescape($data->following) == 'true');
                } else {
                        $following = true;
                }
 
                if (isset($data->sharing)) {
-                       $sharing = (XML::unescape($data->sharing) == "true");
+                       $sharing = (XML::unescape($data->sharing) == 'true');
                } else {
                        $sharing = true;
                }
 
-               $contact = self::contactByHandle($importer["uid"], $author);
+               $contact = self::contactByHandle($importer['uid'], $author);
 
                // perhaps we were already sharing with this person. Now they're sharing with us.
                // That makes us friends.
                if ($contact) {
                        if ($following) {
-                               Logger::info("Author ".$author." (Contact ".$contact["id"].") wants to follow us.");
+                               Logger::info('Author ' . $author . ' (Contact ' . $contact['id'] . ') wants to follow us.');
                                self::receiveRequestMakeFriend($importer, $contact);
 
                                // refetch the contact array
-                               $contact = self::contactByHandle($importer["uid"], $author);
+                               $contact = self::contactByHandle($importer['uid'], $author);
 
                                // If we are now friends, we are sending a share message.
                                // Normally we needn't to do so, but the first message could have been vanished.
-                               if (in_array($contact["rel"], [Contact::FRIEND])) {
-                                       $user = DBA::selectFirst('user', [], ['uid' => $importer["uid"]]);
+                               if (in_array($contact['rel'], [Contact::FRIEND])) {
+                                       $user = DBA::selectFirst('user', [], ['uid' => $importer['uid']]);
                                        if (DBA::isResult($user)) {
-                                               Logger::info("Sending share message to author ".$author." - Contact: ".$contact["id"]." - User: ".$importer["uid"]);
+                                               Logger::info('Sending share message to author ' . $author . ' - Contact: ' . $contact['id'] . ' - User: ' . $importer['uid']);
                                                self::sendShare($user, $contact);
                                        }
                                }
                                return true;
                        } else {
-                               Logger::info("Author ".$author." doesn't want to follow us anymore.");
+                               Logger::info("Author " . $author . " doesn't want to follow us anymore.");
                                Contact::removeFollower($contact);
                                return true;
                        }
                }
 
-               if (!$following && $sharing && in_array($importer["page-flags"], [User::PAGE_FLAGS_SOAPBOX, User::PAGE_FLAGS_NORMAL])) {
-                       Logger::info("Author ".$author." wants to share with us - but doesn't want to listen. Request is ignored.");
+               if (!$following && $sharing && in_array($importer['page-flags'], [User::PAGE_FLAGS_SOAPBOX, User::PAGE_FLAGS_NORMAL])) {
+                       Logger::info("Author " . $author . " wants to share with us - but doesn't want to listen. Request is ignored.");
                        return false;
                } elseif (!$following && !$sharing) {
-                       Logger::info("Author ".$author." doesn't want anything - and we don't know the author. Request is ignored.");
+                       Logger::info("Author " . $author . " doesn't want anything - and we don't know the author. Request is ignored.");
                        return false;
                } elseif (!$following && $sharing) {
-                       Logger::info("Author ".$author." wants to share with us.");
+                       Logger::info("Author " . $author . " wants to share with us.");
                } elseif ($following && $sharing) {
-                       Logger::info("Author ".$author." wants to have a bidirectional conection.");
+                       Logger::info("Author " . $author . " wants to have a bidirectional conection.");
                } elseif ($following && !$sharing) {
-                       Logger::info("Author ".$author." wants to listen to us.");
+                       Logger::info("Author " . $author . " wants to listen to us.");
                }
 
                $ret = FContact::getByURL($author);
 
-               if (!$ret || ($ret["network"] != Protocol::DIASPORA)) {
-                       Logger::notice("Cannot resolve diaspora handle ".$author." for ".$recipient);
+               if (!$ret || ($ret['network'] != Protocol::DIASPORA)) {
+                       Logger::notice("Cannot resolve diaspora handle " . $author . " for ".$recipient);
                        return false;
                }
 
@@ -2232,7 +2258,7 @@ class Diaspora
                        $contact_record = self::contactByHandle($importer['uid'], $author);
                        if (!$contact_record) {
                                Logger::info('unable to locate newly created contact record.');
-                               return;
+                               return false;
                        }
 
                        $user = DBA::selectFirst('user', [], ['uid' => $importer['uid']]);
@@ -2247,83 +2273,6 @@ class Diaspora
                return true;
        }
 
-       /**
-        * Fetches a message with a given guid
-        *
-        * @param string $guid        message guid
-        * @param string $orig_author handle of the original post
-        * @return array The fetched item
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        * @throws \ImagickException
-        */
-       public static function originalItem($guid, $orig_author)
-       {
-               if (empty($guid)) {
-                       Logger::notice('Empty guid. Quitting.');
-                       return false;
-               }
-
-               // Do we already have this item?
-               $fields = ['body', 'title', 'app', 'created', 'object-type', 'uri', 'guid',
-                       'author-name', 'author-link', 'author-avatar', 'plink', 'uri-id'];
-               $condition = ['guid' => $guid, 'visible' => true, 'deleted' => false, 'private' => [Item::PUBLIC, Item::UNLISTED]];
-               $item = Post::selectFirst($fields, $condition);
-
-               if (DBA::isResult($item)) {
-                       Logger::notice("reshared message ".$guid." already exists on system.");
-
-                       // Maybe it is already a reshared item?
-                       // Then refetch the content, if it is a reshare from a reshare.
-                       // If it is a reshared post from another network then reformat to avoid display problems with two share elements
-                       if (self::isReshare($item["body"], true)) {
-                               $item = [];
-                       } elseif (self::isReshare($item["body"], false) || strstr($item["body"], "[share")) {
-                               $item["body"] = Markdown::toBBCode(BBCode::toMarkdown($item["body"]));
-
-                               $item["body"] = self::replacePeopleGuid($item["body"], $item["author-link"]);
-
-                               return $item;
-                       } else {
-                               return $item;
-                       }
-               }
-
-               if (!DBA::isResult($item)) {
-                       if (empty($orig_author)) {
-                               Logger::notice('Empty author for guid ' . $guid . '. Quitting.');
-                               return false;
-                       }
-
-                       $server = "https://".substr($orig_author, strpos($orig_author, "@") + 1);
-                       Logger::notice("1st try: reshared message ".$guid." will be fetched via SSL from the server ".$server);
-                       $stored = self::storeByGuid($guid, $server);
-
-                       if (!$stored) {
-                               $server = "http://".substr($orig_author, strpos($orig_author, "@") + 1);
-                               Logger::notice("2nd try: reshared message ".$guid." will be fetched without SSL from the server ".$server);
-                               $stored = self::storeByGuid($guid, $server);
-                       }
-
-                       if ($stored) {
-                               $fields = ['body', 'title', 'app', 'created', 'object-type', 'uri', 'guid',
-                                       'author-name', 'author-link', 'author-avatar', 'plink', 'uri-id'];
-                               $condition = ['guid' => $guid, 'visible' => true, 'deleted' => false, 'private' => [Item::PUBLIC, Item::UNLISTED]];
-                               $item = Post::selectFirst($fields, $condition);
-
-                               if (DBA::isResult($item)) {
-                                       // If it is a reshared post from another network then reformat to avoid display problems with two share elements
-                                       if (self::isReshare($item["body"], false)) {
-                                               $item["body"] = Markdown::toBBCode(BBCode::toMarkdown($item["body"]));
-                                               $item["body"] = self::replacePeopleGuid($item["body"], $item["author-link"]);
-                                       }
-
-                                       return $item;
-                               }
-                       }
-               }
-               return false;
-       }
-
        /**
         * Stores a reshare activity
         *
@@ -2332,7 +2281,7 @@ class Diaspora
         * @param string  $guid              GUID string of reshare action
         * @param string  $author            Author handle
         */
-       private static function addReshareActivity($item, $parent_message_id, $guid, $author)
+       private static function addReshareActivity(array $item, int $parent_message_id, string $guid, string $author)
        {
                $parent = Post::selectFirst(['uri', 'guid'], ['id' => $parent_message_id]);
 
@@ -2359,6 +2308,7 @@ class Diaspora
                $datarray['protocol'] = $item['protocol'];
                $datarray['source'] = $item['source'];
                $datarray['direction'] = $item['direction'];
+               $datarray['post-reason'] = $item['post-reason'];
 
                $datarray['plink'] = self::plink($author, $datarray['guid']);
                $datarray['private'] = $item['private'];
@@ -2382,15 +2332,16 @@ class Diaspora
        /**
         * Processes a reshare message
         *
-        * @param array  $importer Array of the importer user
-        * @param object $data     The message object
-        * @param string $xml      The original XML of the message
+        * @param array  $importer  Array of the importer user
+        * @param SimpleXMLElement $data      The message object
+        * @param string $xml       The original XML of the message
+        * @param int    $direction Indicates if the message had been fetched or pushed (self::PUSHED, self::FETCHED, self::FORCED_FETCH)
         *
-        * @return int the message id
+        * @return bool Success or failure
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function receiveReshare(array $importer, $data, $xml, bool $fetched)
+       private static function receiveReshare(array $importer, SimpleXMLElement $data, string $xml, int $direction): bool
        {
                $author = XML::unescape($data->author);
                $guid = XML::unescape($data->guid);
@@ -2409,69 +2360,48 @@ class Diaspora
                        GServer::setProtocol($contact['gsid'], Post\DeliveryData::DIASPORA);
                }
 
-               $message_id = self::messageExists($importer["uid"], $guid);
+               $message_id = self::messageExists($importer['uid'], $guid);
                if ($message_id) {
                        return true;
                }
 
-               $original_item = self::originalItem($root_guid, $root_author);
-               if (!$original_item) {
+               $original_person = FContact::getByURL($root_author);
+               if (!$original_person) {
                        return false;
                }
 
-               if (empty($original_item['plink'])) {
-                       $original_item['plink'] = self::plink($root_author, $root_guid);
-               }
-
                $datarray = [];
 
-               $datarray["uid"] = $importer["uid"];
-               $datarray["contact-id"] = $contact["id"];
-               $datarray["network"]  = Protocol::DIASPORA;
+               $datarray['uid'] = $importer['uid'];
+               $datarray['contact-id'] = $contact['id'];
+               $datarray['network']  = Protocol::DIASPORA;
 
-               $datarray["author-link"] = $contact["url"];
-               $datarray["author-id"] = Contact::getIdForURL($contact["url"], 0);
+               $datarray['author-link'] = $contact['url'];
+               $datarray['author-id'] = Contact::getIdForURL($contact['url'], 0);
 
-               $datarray["owner-link"] = $datarray["author-link"];
-               $datarray["owner-id"] = $datarray["author-id"];
+               $datarray['owner-link'] = $datarray['author-link'];
+               $datarray['owner-id'] = $datarray['author-id'];
 
-               $datarray["guid"] = $guid;
-               $datarray["uri"] = $datarray["thr-parent"] = self::getUriFromGuid($author, $guid);
+               $datarray['guid'] = $guid;
+               $datarray['uri'] = $datarray['thr-parent'] = self::getUriFromGuid($author, $guid);
                $datarray['uri-id'] = ItemURI::insert(['uri' => $datarray['uri'], 'guid' => $datarray['guid']]);
 
-               $datarray["verb"] = Activity::POST;
-               $datarray["gravity"] = GRAVITY_PARENT;
+               $datarray['verb'] = Activity::POST;
+               $datarray['gravity'] = GRAVITY_PARENT;
 
-               $datarray["protocol"] = Conversation::PARCEL_DIASPORA;
-               $datarray["source"] = $xml;
-               $datarray["direction"] = $fetched ? Conversation::PULL : Conversation::PUSH;
+               $datarray['protocol'] = Conversation::PARCEL_DIASPORA;
+               $datarray['source'] = $xml;
 
-               /// @todo Copy tag data from original post
+               $datarray = self::setDirection($datarray, $direction);
 
-               $prefix = BBCode::getShareOpeningTag(
-                       $original_item["author-name"],
-                       $original_item["author-link"],
-                       $original_item["author-avatar"],
-                       $original_item["plink"],
-                       $original_item["created"],
-                       $original_item["guid"]
-               );
-
-               if (!empty($original_item['title'])) {
-                       $prefix .= '[h3]' . $original_item['title'] . "[/h3]\n";
-               }
-
-               $datarray["body"] = $prefix.$original_item["body"]."[/share]";
-
-               Tag::storeFromBody($datarray['uri-id'], $datarray["body"]);
-
-               $datarray["app"]  = $original_item["app"];
+               $datarray['body'] = DI::contentItem()->createSharedPostByGuid($root_guid, $importer['uid'], $original_person['url']);
 
-               $datarray["plink"] = self::plink($author, $guid);
-               $datarray["private"] = (($public == "false") ? Item::PRIVATE : Item::PUBLIC);
-               $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
+               /// @todo Copy tag data from original post
+               Tag::storeFromBody($datarray['uri-id'], $datarray['body']);
 
-               $datarray["object-type"] = $original_item["object-type"];
+               $datarray['plink'] = self::plink($author, $guid);
+               $datarray['private'] = (($public == 'false') ? Item::PRIVATE : Item::PUBLIC);
+               $datarray['changed'] = $datarray['created'] = $datarray['edited'] = $created_at;
 
                self::fetchGuid($datarray);
 
@@ -2484,13 +2414,13 @@ class Diaspora
 
                self::sendParticipation($contact, $datarray);
 
-               $root_message_id = self::messageExists($importer["uid"], $root_guid);
+               $root_message_id = self::messageExists($importer['uid'], $root_guid);
                if ($root_message_id) {
                        self::addReshareActivity($datarray, $root_message_id, $guid, $author);
                }
 
                if ($message_id) {
-                       Logger::info("Stored reshare ".$datarray["guid"]." with message id ".$message_id);
+                       Logger::info('Stored reshare ' . $datarray['guid'] . ' with message id ' . $message_id);
                        if ($datarray['uid'] == 0) {
                                Item::distribute($message_id);
                        }
@@ -2505,12 +2435,12 @@ class Diaspora
         *
         * @param array  $importer Array of the importer user
         * @param array  $contact  The contact of the item owner
-        * @param object $data     The message object
+        * @param SimpleXMLElement $data     The message object
         *
         * @return bool success
         * @throws \Exception
         */
-       private static function itemRetraction(array $importer, array $contact, $data)
+       private static function itemRetraction(array $importer, array $contact, SimpleXMLElement $data): bool
        {
                $author = XML::unescape($data->author);
                $target_guid = XML::unescape($data->target_guid);
@@ -2518,12 +2448,12 @@ class Diaspora
 
                $person = FContact::getByURL($author);
                if (!is_array($person)) {
-                       Logger::notice("unable to find author detail for ".$author);
+                       Logger::notice('Unable to find author detail for ' . $author);
                        return false;
                }
 
-               if (empty($contact["url"])) {
-                       $contact["url"] = $person["url"];
+               if (empty($contact['url'])) {
+                       $contact['url'] = $person['url'];
                }
 
                // Fetch items that are about to be deleted
@@ -2538,7 +2468,7 @@ class Diaspora
 
                $r = Post::select($fields, $condition);
                if (!DBA::isResult($r)) {
-                       Logger::notice("Target guid ".$target_guid." was not found on this system for user ".$importer['uid'].".");
+                       Logger::notice('Target guid ' . $target_guid . ' was not found on this system for user ' . $importer['uid'] . '.');
                        return false;
                }
 
@@ -2552,14 +2482,14 @@ class Diaspora
                        $parent = Post::selectFirst(['author-link'], ['id' => $item['parent']]);
 
                        // Only delete it if the parent author really fits
-                       if (!Strings::compareLink($parent["author-link"], $contact["url"]) && !Strings::compareLink($item["author-link"], $contact["url"])) {
-                               Logger::info("Thread author ".$parent["author-link"]." and item author ".$item["author-link"]." don't fit to expected contact ".$contact["url"]);
+                       if (!Strings::compareLink($parent['author-link'], $contact['url']) && !Strings::compareLink($item['author-link'], $contact['url'])) {
+                               Logger::info("Thread author " . $parent['author-link'] . " and item author " . $item['author-link'] . " don't fit to expected contact " . $contact['url']);
                                continue;
                        }
 
                        Item::markForDeletion(['id' => $item['id']]);
 
-                       Logger::info("Deleted target ".$target_guid." (".$item["id"].") from user ".$item["uid"]." parent: ".$item['parent']);
+                       Logger::info('Deleted target ' . $target_guid . ' (' . $item['id'] . ') from user ' . $item['uid'] . ' parent: ' . $item['parent']);
                }
                DBA::close($r);
 
@@ -2571,18 +2501,18 @@ class Diaspora
         *
         * @param array  $importer Array of the importer user
         * @param string $sender   The sender of the message
-        * @param object $data     The message object
+        * @param SimpleXMLElement $data     The message object
         *
         * @return bool Success
         * @throws \Exception
         */
-       private static function receiveRetraction(array $importer, $sender, $data)
+       private static function receiveRetraction(array $importer, string $sender, SimpleXMLElement $data)
        {
                $target_type = XML::unescape($data->target_type);
 
-               $contact = self::contactByHandle($importer["uid"], $sender);
-               if (!$contact && (in_array($target_type, ["Contact", "Person"]))) {
-                       Logger::notice("cannot find contact for sender: ".$sender." and user ".$importer["uid"]);
+               $contact = self::contactByHandle($importer['uid'], $sender);
+               if (!$contact && (in_array($target_type, ['Contact', 'Person']))) {
+                       Logger::notice('Cannot find contact for sender: ' . $sender . ' and user ' . $importer['uid']);
                        return false;
                }
 
@@ -2590,23 +2520,23 @@ class Diaspora
                        $contact = [];
                }
 
-               Logger::info("Got retraction for ".$target_type.", sender ".$sender." and user ".$importer["uid"]);
+               Logger::info('Got retraction for ' . $target_type . ', sender ' . $sender . ' and user ' . $importer['uid']);
 
                switch ($target_type) {
-                       case "Comment":
-                       case "Like":
-                       case "Post":
-                       case "Reshare":
-                       case "StatusMessage":
+                       case 'Comment':
+                       case 'Like':
+                       case 'Post':
+                       case 'Reshare':
+                       case 'StatusMessage':
                                return self::itemRetraction($importer, $contact, $data);
 
-                       case "PollParticipation":
-                       case "Photo":
+                       case 'PollParticipation':
+                       case 'Photo':
                                // Currently unsupported
                                break;
 
                        default:
-                               Logger::notice("Unknown target type ".$target_type);
+                               Logger::notice('Unknown target type ' . $target_type);
                                return false;
                }
                return true;
@@ -2615,24 +2545,33 @@ class Diaspora
        /**
         * Checks if an incoming message is wanted
         *
-        * @param string $url
-        * @param integer $uriid
+        * @param array  $item
         * @param string $author
         * @param string $body
+        * @param int    $direction Indicates if the message had been fetched or pushed (self::PUSHED, self::FETCHED, self::FORCED_FETCH)
+        *
         * @return boolean Is the message wanted?
         */
-       private static function isSolicitedMessage(string $url, int $uriid, string $author, string $body)
+       private static function isSolicitedMessage(array $item, string $author, string $body, int $direction): bool
        {
                $contact = Contact::getByURL($author);
-               if (DBA::exists('contact', ["`nurl` = ? AND `uid` != ? AND `rel` IN (?, ?)",
-                       $contact['nurl'], 0, Contact::FRIEND, Contact::SHARING])) {
-                       Logger::info('Author has got followers - accepted', ['url' => $url, 'author' => $author]);
+               if (DBA::exists('contact', ['`nurl` = ? AND `uid` != ? AND `rel` IN (?, ?)', $contact['nurl'], 0, Contact::FRIEND, Contact::SHARING])) {
+                       Logger::debug('Author has got followers - accepted', ['uri-id' => $item['uri-id'], 'guid' => $item['guid'], 'url' => $item['uri'], 'author' => $author]);
+                       return true;
+               }
+
+               if ($direction == self::FORCED_FETCH) {
+                       Logger::debug('Post is a forced fetch - accepted', ['uri-id' => $item['uri-id'], 'guid' => $item['guid'], 'url' => $item['uri'], 'author' => $author]);
                        return true;
                }
 
-               $taglist = Tag::getByURIId($uriid, [Tag::HASHTAG]);
-               $tags = array_column($taglist, 'name');
-               return Relay::isSolicitedPost($tags, $body, $contact['id'], $url, Protocol::DIASPORA);
+               $tags = array_column(Tag::getByURIId($item['uri-id'], [Tag::HASHTAG]), 'name');
+               if (Relay::isSolicitedPost($tags, $body, $contact['id'], $item['uri'], Protocol::DIASPORA)) {
+                       Logger::debug('Post is accepted because of the relay settings', ['uri-id' => $item['uri-id'], 'guid' => $item['guid'], 'url' => $item['uri'], 'author' => $author]);
+                       return true;
+               } else {
+                       return false;
+               }
        }
 
        /**
@@ -2644,6 +2583,8 @@ class Diaspora
         */
        private static function storePhotoAsMedia(int $uriid, $photo)
        {
+               // @TODO Need to find object type, roland@f.haeder.net
+               Logger::debug('photo='.get_class($photo));
                $data = [];
                $data['uri-id'] = $uriid;
                $data['type'] = Post\Media::IMAGE;
@@ -2655,18 +2596,42 @@ class Diaspora
                Post\Media::insert($data);
        }
 
+       /**
+        * Set direction and post reason
+        *
+        * @param array $datarray
+        * @param integer $direction
+        *
+        * @return array
+        */
+       public static function setDirection(array $datarray, int $direction): array
+       {
+               $datarray['direction'] = in_array($direction, [self::FETCHED, self::FORCED_FETCH]) ? Conversation::PULL : Conversation::PUSH;
+
+               if (in_array($direction, [self::FETCHED, self::FORCED_FETCH])) {
+                       $datarray['post-reason'] = Item::PR_FETCHED;
+               } elseif ($datarray['uid'] == 0) {
+                       $datarray['post-reason'] = Item::PR_GLOBAL;
+               } else {
+                       $datarray['post-reason'] = Item::PR_PUSHED;
+               }
+
+               return $datarray;
+       }
+
        /**
         * Receives status messages
         *
-        * @param array            $importer Array of the importer user
-        * @param SimpleXMLElement $data     The message object
-        * @param string           $xml      The original XML of the message
-        * @param bool             $fetched  The message had been fetched and not pushed
-        * @return int The message id of the newly created item
+        * @param array            $importer  Array of the importer user
+        * @param SimpleXMLElement $data      The message object
+        * @param string           $xml       The original XML of the message
+        * @param int              $direction Indicates if the message had been fetched or pushed (self::PUSHED, self::FETCHED, self::FORCED_FETCH)
+        *
+        * @return int|bool The message id of the newly created item or false on error
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function receiveStatusMessage(array $importer, SimpleXMLElement $data, $xml, bool $fetched)
+       private static function receiveStatusMessage(array $importer, SimpleXMLElement $data, string $xml, int $direction)
        {
                $author = XML::unescape($data->author);
                $guid = XML::unescape($data->guid);
@@ -2684,7 +2649,7 @@ class Diaspora
                        GServer::setProtocol($contact['gsid'], Post\DeliveryData::DIASPORA);
                }
 
-               $message_id = self::messageExists($importer["uid"], $guid);
+               $message_id = self::messageExists($importer['uid'], $guid);
                if ($message_id) {
                        return true;
                }
@@ -2700,8 +2665,8 @@ class Diaspora
 
                $datarray = [];
 
-               $datarray["guid"] = $guid;
-               $datarray["uri"] = $datarray["thr-parent"] = self::getUriFromGuid($author, $guid);
+               $datarray['guid'] = $guid;
+               $datarray['uri'] = $datarray['thr-parent'] = self::getUriFromGuid($author, $guid);
                $datarray['uri-id'] = ItemURI::insert(['uri' => $datarray['uri'], 'guid' => $datarray['guid']]);
 
                // Attach embedded pictures to the body
@@ -2710,14 +2675,14 @@ class Diaspora
                                self::storePhotoAsMedia($datarray['uri-id'], $photo);
                        }
 
-                       $datarray["object-type"] = Activity\ObjectType::IMAGE;
-                       $datarray["post-type"] = Item::PT_IMAGE;
+                       $datarray['object-type'] = Activity\ObjectType::IMAGE;
+                       $datarray['post-type'] = Item::PT_IMAGE;
                } elseif ($data->poll) {
-                       $datarray["object-type"] = Activity\ObjectType::NOTE;
-                       $datarray["post-type"] = Item::PT_POLL;
+                       $datarray['object-type'] = Activity\ObjectType::NOTE;
+                       $datarray['post-type'] = Item::PT_POLL;
                } else {
-                       $datarray["object-type"] = Activity\ObjectType::NOTE;
-                       $datarray["post-type"] = Item::PT_NOTE;
+                       $datarray['object-type'] = Activity\ObjectType::NOTE;
+                       $datarray['post-type'] = Item::PT_NOTE;
                }
 
                /// @todo enable support for polls
@@ -2729,54 +2694,49 @@ class Diaspora
 
                /// @todo enable support for events
 
-               $datarray["uid"] = $importer["uid"];
-               $datarray["contact-id"] = $contact["id"];
-               $datarray["network"] = Protocol::DIASPORA;
+               $datarray['uid'] = $importer['uid'];
+               $datarray['contact-id'] = $contact['id'];
+               $datarray['network'] = Protocol::DIASPORA;
 
-               $datarray["author-link"] = $contact["url"];
-               $datarray["author-id"] = Contact::getIdForURL($contact["url"], 0);
+               $datarray['author-link'] = $contact['url'];
+               $datarray['author-id'] = Contact::getIdForURL($contact['url'], 0);
 
-               $datarray["owner-link"] = $datarray["author-link"];
-               $datarray["owner-id"] = $datarray["author-id"];
+               $datarray['owner-link'] = $datarray['author-link'];
+               $datarray['owner-id'] = $datarray['author-id'];
 
-               $datarray["verb"] = Activity::POST;
-               $datarray["gravity"] = GRAVITY_PARENT;
+               $datarray['verb'] = Activity::POST;
+               $datarray['gravity'] = GRAVITY_PARENT;
 
-               $datarray["protocol"] = Conversation::PARCEL_DIASPORA;
-               $datarray["source"] = $xml;
-               $datarray["direction"] = $fetched ? Conversation::PULL : Conversation::PUSH;
+               $datarray['protocol'] = Conversation::PARCEL_DIASPORA;
+               $datarray['source'] = $xml;
 
-               if ($fetched) {
-                       $datarray["post-reason"] = Item::PR_FETCHED;
-               } elseif ($datarray["uid"] == 0) {
-                       $datarray["post-reason"] = Item::PR_GLOBAL;
-               }
+               $datarray = self::setDirection($datarray, $direction);
 
-               $datarray["body"] = self::replacePeopleGuid($body, $contact["url"]);
-               $datarray["raw-body"] = self::replacePeopleGuid($raw_body, $contact["url"]);
+               $datarray['body'] = self::replacePeopleGuid($body, $contact['url']);
+               $datarray['raw-body'] = self::replacePeopleGuid($raw_body, $contact['url']);
 
                self::storeMentions($datarray['uri-id'], $text);
-               Tag::storeRawTagsFromBody($datarray['uri-id'], $datarray["body"]);
+               Tag::storeRawTagsFromBody($datarray['uri-id'], $datarray['body']);
 
-               if (!$fetched && !self::isSolicitedMessage($datarray["uri"], $datarray['uri-id'], $author, $body)) {
+               if (!self::isSolicitedMessage($datarray, $author, $body, $direction)) {
                        DBA::delete('item-uri', ['uri' => $datarray['uri']]);
                        return false;
                }
 
-               if ($provider_display_name != "") {
-                       $datarray["app"] = $provider_display_name;
+               if ($provider_display_name != '') {
+                       $datarray['app'] = $provider_display_name;
                }
 
-               $datarray["plink"] = self::plink($author, $guid);
-               $datarray["private"] = (($public == "false") ? Item::PRIVATE : Item::PUBLIC);
-               $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
+               $datarray['plink'] = self::plink($author, $guid);
+               $datarray['private'] = (($public == 'false') ? Item::PRIVATE : Item::PUBLIC);
+               $datarray['changed'] = $datarray['created'] = $datarray['edited'] = $created_at;
 
-               if (isset($address["address"])) {
-                       $datarray["location"] = $address["address"];
+               if (isset($address['address'])) {
+                       $datarray['location'] = $address['address'];
                }
 
-               if (isset($address["lat"]) && isset($address["lng"])) {
-                       $datarray["coord"] = $address["lat"]." ".$address["lng"];
+               if (isset($address['lat']) && isset($address['lng'])) {
+                       $datarray['coord'] = $address['lat'] . ' ' . $address['lng'];
                }
 
                self::fetchGuid($datarray);
@@ -2791,7 +2751,7 @@ class Diaspora
                self::sendParticipation($contact, $datarray);
 
                if ($message_id) {
-                       Logger::info("Stored item ".$datarray["guid"]." with message id ".$message_id);
+                       Logger::info('Stored item ' . $datarray['guid'] . ' with message id ' . $message_id);
                        if ($datarray['uid'] == 0) {
                                Item::distribute($message_id);
                        }
@@ -2813,21 +2773,21 @@ class Diaspora
         * @return string the handle in the format user@domain.tld
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         */
-       private static function myHandle(array $contact)
+       private static function myHandle(array $contact): string
        {
-               if (!empty($contact["addr"])) {
-                       return $contact["addr"];
+               if (!empty($contact['addr'])) {
+                       return $contact['addr'];
                }
 
                // Normally we should have a filled "addr" field - but in the past this wasn't the case
                // So - just in case - we build the the address here.
-               if ($contact["nickname"] != "") {
-                       $nick = $contact["nickname"];
+               if ($contact['nickname'] != '') {
+                       $nick = $contact['nickname'];
                } else {
-                       $nick = $contact["nick"];
+                       $nick = $contact['nick'];
                }
 
-               return $nick . "@" . substr(DI::baseUrl(), strpos(DI::baseUrl(), "://") + 3);
+               return $nick . '@' . substr(DI::baseUrl(), strpos(DI::baseUrl(), '://') + 3);
        }
 
 
@@ -2843,13 +2803,13 @@ class Diaspora
         * @return string The encrypted data
         * @throws \Exception
         */
-       public static function encodePrivateData($msg, array $user, array $contact, $prvkey, $pubkey)
+       public static function encodePrivateData(string $msg, array $user, array $contact, string $prvkey, string $pubkey): string
        {
-               Logger::debug("Message: ".$msg);
+               Logger::debug('Message: ' . $msg);
 
                // without a public key nothing will work
                if (!$pubkey) {
-                       Logger::notice("pubkey missing: contact id: ".$contact["id"]);
+                       Logger::notice('pubkey missing: contact id: ' . $contact['id']);
                        return false;
                }
 
@@ -2860,16 +2820,18 @@ class Diaspora
 
                $ciphertext = self::aesEncrypt($aes_key, $iv, $msg);
 
-               $json = json_encode(["iv" => $b_iv, "key" => $b_aes_key]);
+               $json = json_encode(['iv' => $b_iv, 'key' => $b_aes_key]);
 
-               $encrypted_key_bundle = "";
+               $encrypted_key_bundle = '';
                if (!@openssl_public_encrypt($json, $encrypted_key_bundle, $pubkey)) {
                        return false;
                }
 
                $json_object = json_encode(
-                       ["aes_key" => base64_encode($encrypted_key_bundle),
-                                       "encrypted_magic_envelope" => base64_encode($ciphertext)]
+                       [
+                               'aes_key' => base64_encode($encrypted_key_bundle),
+                               'encrypted_magic_envelope' => base64_encode($ciphertext)
+                       ]
                );
 
                return $json_object;
@@ -2884,33 +2846,37 @@ class Diaspora
         * @return string The envelope
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         */
-       public static function buildMagicEnvelope($msg, array $user)
+       public static function buildMagicEnvelope(string $msg, array $user): string
        {
                $b64url_data = Strings::base64UrlEncode($msg);
-               $data = str_replace(["\n", "\r", " ", "\t"], ["", "", "", ""], $b64url_data);
+               $data = str_replace(["\n", "\r", " ", "\t"], ['', '', '', ''], $b64url_data);
 
                $key_id = Strings::base64UrlEncode(self::myHandle($user));
-               $type = "application/xml";
-               $encoding = "base64url";
-               $alg = "RSA-SHA256";
-               $signable_data = $data.".".Strings::base64UrlEncode($type).".".Strings::base64UrlEncode($encoding).".".Strings::base64UrlEncode($alg);
+               $type = 'application/xml';
+               $encoding = 'base64url';
+               $alg = 'RSA-SHA256';
+               $signable_data = $data . '.' . Strings::base64UrlEncode($type) . '.' . Strings::base64UrlEncode($encoding) . '.' . Strings::base64UrlEncode($alg);
 
                // Fallback if the private key wasn't transmitted in the expected field
-               if ($user['uprvkey'] == "") {
+               if ($user['uprvkey'] == '') {
                        $user['uprvkey'] = $user['prvkey'];
                }
 
-               $signature = Crypto::rsaSign($signable_data, $user["uprvkey"]);
+               $signature = Crypto::rsaSign($signable_data, $user['uprvkey']);
                $sig = Strings::base64UrlEncode($signature);
 
-               $xmldata = ["me:env" => ["me:data" => $data,
-                                                       "@attributes" => ["type" => $type],
-                                                       "me:encoding" => $encoding,
-                                                       "me:alg" => $alg,
-                                                       "me:sig" => $sig,
-                                                       "@attributes2" => ["key_id" => $key_id]]];
+               $xmldata = [
+                       'me:env' => [
+                               'me:data' => $data,
+                               '@attributes' => ['type' => $type],
+                               'me:encoding' => $encoding,
+                               'me:alg' => $alg,
+                               'me:sig' => $sig,
+                               '@attributes2' => ['key_id' => $key_id]
+                       ]
+               ];
 
-               $namespaces = ["me" => "http://salmon-protocol.org/ns/magic-env"];
+               $namespaces = ['me' => ActivityNamespace::SALMON_ME];
 
                return XML::fromArray($xmldata, $xml, false, $namespaces);
        }
@@ -2928,7 +2894,7 @@ class Diaspora
         * @return string The message that will be transmitted to other servers
         * @throws \Exception
         */
-       public static function buildMessage($msg, array $user, array $contact, $prvkey, $pubkey, $public = false)
+       public static function buildMessage(string $msg, array $user, array $contact, string $prvkey, string $pubkey, bool $public = false): string
        {
                // The message is put into an envelope with the sender's signature
                $envelope = self::buildMagicEnvelope($msg, $user);
@@ -2949,15 +2915,15 @@ class Diaspora
         *
         * @return string The signature
         */
-       private static function signature($owner, $message)
+       private static function signature(array $owner, array $message): string
        {
                $sigmsg = $message;
-               unset($sigmsg["author_signature"]);
-               unset($sigmsg["parent_author_signature"]);
+               unset($sigmsg['author_signature']);
+               unset($sigmsg['parent_author_signature']);
 
-               $signed_text = implode(";", $sigmsg);
+               $signed_text = implode(';', $sigmsg);
 
-               return base64_encode(Crypto::rsaSign($signed_text, $owner["uprvkey"], "sha256"));
+               return base64_encode(Crypto::rsaSign($signed_text, $owner['uprvkey'], 'sha256'));
        }
 
        /**
@@ -2973,9 +2939,9 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function transmit(array $owner, array $contact, $envelope, $public_batch, $guid = "")
+       private static function transmit(array $owner, array $contact, string $envelope, bool $public_batch, string $guid = ''): int
        {
-               $enabled = intval(DI::config()->get("system", "diaspora_enabled"));
+               $enabled = intval(DI::config()->get('system', 'diaspora_enabled'));
                if (!$enabled) {
                        return 200;
                }
@@ -2987,32 +2953,32 @@ class Diaspora
                if (!empty($contact['addr'])) {
                        $fcontact = FContact::getByURL($contact['addr']);
                        if (!empty($fcontact)) {
-                               $dest_url = ($public_batch ? $fcontact["batch"] : $fcontact["notify"]);
+                               $dest_url = ($public_batch ? $fcontact['batch'] : $fcontact['notify']);
                        }
                }
 
                if (empty($dest_url)) {
-                       $dest_url = ($public_batch ? $contact["batch"] : $contact["notify"]);
+                       $dest_url = ($public_batch ? $contact['batch'] : $contact['notify']);
                }
 
                if (!$dest_url) {
-                       Logger::notice("no url for contact: ".$contact["id"]." batch mode =".$public_batch);
+                       Logger::notice('No URL for contact: ' . $contact['id'] . ' batch mode =' . $public_batch);
                        return 0;
                }
 
-               Logger::notice("transmit: ".$logid."-".$guid." ".$dest_url);
+               Logger::notice('transmit: ' . $logid . '-' . $guid . ' ' . $dest_url);
 
-               if (!intval(DI::config()->get("system", "diaspora_test"))) {
-                       $content_type = (($public_batch) ? "application/magic-envelope+xml" : "application/json");
+               if (!intval(DI::config()->get('system', 'diaspora_test'))) {
+                       $content_type = (($public_batch) ? 'application/magic-envelope+xml' : 'application/json');
 
-                       $postResult = DI::httpClient()->post($dest_url . "/", $envelope, ['Content-Type' => $content_type]);
+                       $postResult = DI::httpClient()->post($dest_url . '/', $envelope, ['Content-Type' => $content_type]);
                        $return_code = $postResult->getReturnCode();
                } else {
-                       Logger::notice("test_mode");
+                       Logger::notice('test_mode');
                        return 200;
                }
 
-               Logger::notice("transmit: ".$logid."-".$guid." to ".$dest_url." returns: ".$return_code);
+               Logger::notice('transmit: ' . $logid . '-' . $guid . ' to ' . $dest_url . ' returns: ' . $return_code);
 
                return $return_code ? $return_code : -1;
        }
@@ -3026,7 +2992,7 @@ class Diaspora
         *
         * @return string The post XML
         */
-       public static function buildPostXml($type, $message)
+       public static function buildPostXml(string $type, array $message): string
        {
                $data = [$type => $message];
 
@@ -3047,7 +3013,7 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       private static function buildAndTransmit(array $owner, array $contact, $type, $message, $public_batch = false, $guid = "")
+       private static function buildAndTransmit(array $owner, array $contact, string $type, array $message, bool $public_batch = false, string $guid = '')
        {
                $msg = self::buildPostXml($type, $message);
 
@@ -3072,7 +3038,7 @@ class Diaspora
                        Logger::notice('Empty addr', ['contact' => $contact ?? [], 'callstack' => System::callstack(20)]);
                }
 
-               $envelope = self::buildMessage($msg, $owner, $contact, $owner['uprvkey'], $pubkey, $public_batch);
+               $envelope = self::buildMessage($msg, $owner, $contact, $owner['uprvkey'], $pubkey ?? '', $public_batch);
 
                $return_code = self::transmit($owner, $contact, $envelope, $public_batch, $guid);
 
@@ -3090,18 +3056,18 @@ class Diaspora
         * @return int The result of the transmission
         * @throws \Exception
         */
-       private static function sendParticipation(array $contact, array $item)
+       private static function sendParticipation(array $contact, array $item): int
        {
                // Don't send notifications for private postings
                if ($item['private'] == Item::PRIVATE) {
-                       return;
+                       return 0;
                }
 
-               $cachekey = "diaspora:sendParticipation:".$item['guid'];
+               $cachekey = 'diaspora:sendParticipation:' . $item['guid'];
 
                $result = DI::cache()->get($cachekey);
                if (!is_null($result)) {
-                       return;
+                       return -1;
                }
 
                // Fetch some user id to have a valid handle to transmit the participation.
@@ -3119,17 +3085,19 @@ class Diaspora
 
                $author = self::myHandle($owner);
 
-               $message = ["author" => $author,
-                               "guid" => System::createUUID(),
-                               "parent_type" => "Post",
-                               "parent_guid" => $item["guid"]];
+               $message = [
+                       'author' => $author,
+                       'guid' => System::createUUID(),
+                       'parent_type' => 'Post',
+                       'parent_guid' => $item['guid']
+               ];
 
-               Logger::info("Send participation for ".$item["guid"]." by ".$author);
+               Logger::info('Send participation for ' . $item['guid'] . ' by ' . $author);
 
                // It doesn't matter what we store, we only want to avoid sending repeated notifications for the same item
-               DI::cache()->set($cachekey, $item["guid"], Duration::QUARTER_HOUR);
+               DI::cache()->set($cachekey, $item['guid'], Duration::QUARTER_HOUR);
 
-               return self::buildAndTransmit($owner, $contact, "participation", $message);
+               return self::buildAndTransmit($owner, $contact, 'participation', $message);
        }
 
        /**
@@ -3143,21 +3111,23 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function sendAccountMigration(array $owner, array $contact, $uid)
+       public static function sendAccountMigration(array $owner, array $contact, int $uid): int
        {
                $old_handle = DI::pConfig()->get($uid, 'system', 'previous_addr');
                $profile = self::createProfileData($uid);
 
                $signed_text = 'AccountMigration:'.$old_handle.':'.$profile['author'];
-               $signature = base64_encode(Crypto::rsaSign($signed_text, $owner["uprvkey"], "sha256"));
+               $signature = base64_encode(Crypto::rsaSign($signed_text, $owner['uprvkey'], 'sha256'));
 
-               $message = ["author" => $old_handle,
-                               "profile" => $profile,
-                               "signature" => $signature];
+               $message = [
+                       'author' => $old_handle,
+                       'profile' => $profile,
+                       'signature' => $signature
+               ];
 
                Logger::info('Send account migration', ['msg' => $message]);
 
-               return self::buildAndTransmit($owner, $contact, "account_migration", $message);
+               return self::buildAndTransmit($owner, $contact, 'account_migration', $message);
        }
 
        /**
@@ -3169,7 +3139,7 @@ class Diaspora
         * @return int The result of the transmission
         * @throws \Exception
         */
-       public static function sendShare(array $owner, array $contact)
+       public static function sendShare(array $owner, array $contact): int
        {
                /**
                 * @todo support the different possible combinations of "following" and "sharing"
@@ -3194,14 +3164,16 @@ class Diaspora
                }
                */
 
-               $message = ["author" => self::myHandle($owner),
-                               "recipient" => $contact["addr"],
-                               "following" => "true",
-                               "sharing" => "true"];
+               $message = [
+                       'author' => self::myHandle($owner),
+                       'recipient' => $contact['addr'],
+                       'following' => 'true',
+                       'sharing' => 'true'
+               ];
 
                Logger::info('Send share', ['msg' => $message]);
 
-               return self::buildAndTransmit($owner, $contact, "contact", $message);
+               return self::buildAndTransmit($owner, $contact, 'contact', $message);
        }
 
        /**
@@ -3213,16 +3185,18 @@ class Diaspora
         * @return int The result of the transmission
         * @throws \Exception
         */
-       public static function sendUnshare(array $owner, array $contact)
+       public static function sendUnshare(array $owner, array $contact): int
        {
-               $message = ["author" => self::myHandle($owner),
-                               "recipient" => $contact["addr"],
-                               "following" => "false",
-                               "sharing" => "false"];
+               $message = [
+                       'author'    => self::myHandle($owner),
+                       'recipient' => $contact['addr'],
+                       'following' => 'false',
+                       'sharing'   => 'false'
+               ];
 
                Logger::info('Send unshare', ['msg' => $message]);
 
-               return self::buildAndTransmit($owner, $contact, "contact", $message);
+               return self::buildAndTransmit($owner, $contact, 'contact', $message);
        }
 
        /**
@@ -3235,7 +3209,7 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function isReshare($body, $complete = true)
+       public static function isReshare(string $body, bool $complete = true)
        {
                $body = trim($body);
 
@@ -3255,8 +3229,8 @@ class Diaspora
                        $item = Post::selectFirst(['contact-id'], $condition);
                        if (DBA::isResult($item)) {
                                $ret = [];
-                               $ret["root_handle"] = self::handleFromContact($item["contact-id"]);
-                               $ret["root_guid"] = $reshared['guid'];
+                               $ret['root_handle'] = self::handleFromContact($item['contact-id']);
+                               $ret['root_guid'] = $reshared['guid'];
                                return $ret;
                        } elseif ($complete) {
                                // We are resharing something that isn't a DFRN or Diaspora post.
@@ -3291,7 +3265,7 @@ class Diaspora
         * @return array with event data
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         */
-       private static function buildEvent($event_id)
+       private static function buildEvent(string $event_id): array
        {
                $event = DBA::selectFirst('event', [], ['id' => $event_id]);
                if (!DBA::isResult($event)) {
@@ -3314,7 +3288,7 @@ class Diaspora
                $mask = DateTimeFormat::ATOM;
 
                /// @todo - establish "all day" events in Friendica
-               $eventdata["all_day"] = "false";
+               $eventdata['all_day'] = 'false';
 
                $eventdata['timezone'] = 'UTC';
 
@@ -3335,13 +3309,13 @@ class Diaspora
                        $coord = Map::getCoordinates($event['location']);
 
                        $location = [];
-                       $location["address"] = html_entity_decode(BBCode::toMarkdown($event['location']));
+                       $location['address'] = html_entity_decode(BBCode::toMarkdown($event['location']));
                        if (!empty($coord['lat']) && !empty($coord['lon'])) {
-                               $location["lat"] = $coord['lat'];
-                               $location["lng"] = $coord['lon'];
+                               $location['lat'] = $coord['lat'];
+                               $location['lng'] = $coord['lon'];
                        } else {
-                               $location["lat"] = 0;
-                               $location["lng"] = 0;
+                               $location['lat'] = 0;
+                               $location['lng'] = 0;
                        }
                        $eventdata['location'] = $location;
                }
@@ -3363,7 +3337,7 @@ class Diaspora
         */
        public static function buildStatus(array $item, array $owner)
        {
-               $cachekey = "diaspora:buildStatus:".$item['guid'];
+               $cachekey = 'diaspora:buildStatus:' . $item['guid'];
 
                $result = DI::cache()->get($cachekey);
                if (!is_null($result)) {
@@ -3372,36 +3346,38 @@ class Diaspora
 
                $myaddr = self::myHandle($owner);
 
-               $public = ($item["private"] == Item::PRIVATE ? "false" : "true");
+               $public = ($item['private'] == Item::PRIVATE ? 'false' : 'true');
                $created = DateTimeFormat::utc($item['received'], DateTimeFormat::ATOM);
-               $edited = DateTimeFormat::utc($item["edited"] ?? $item["created"], DateTimeFormat::ATOM);
+               $edited = DateTimeFormat::utc($item['edited'] ?? $item['created'], DateTimeFormat::ATOM);
 
                // Detect a share element and do a reshare
-               if (($item['private'] != Item::PRIVATE) && ($ret = self::isReshare($item["body"]))) {
-                       $message = ["author" => $myaddr,
-                                       "guid" => $item["guid"],
-                                       "created_at" => $created,
-                                       "root_author" => $ret["root_handle"],
-                                       "root_guid" => $ret["root_guid"],
-                                       "provider_display_name" => $item["app"],
-                                       "public" => $public];
-
-                       $type = "reshare";
+               if (($item['private'] != Item::PRIVATE) && ($ret = self::isReshare($item['body']))) {
+                       $message = [
+                               'author'                => $myaddr,
+                               'guid'                  => $item['guid'],
+                               'created_at'            => $created,
+                               'root_author'           => $ret['root_handle'],
+                               'root_guid'             => $ret['root_guid'],
+                               'provider_display_name' => $item['app'],
+                               'public'                => $public
+                       ];
+
+                       $type = 'reshare';
                } else {
-                       $title = $item["title"];
+                       $title = $item['title'];
                        $body = Post\Media::addAttachmentsToBody($item['uri-id'], $item['body']);
 
                        // Fetch the title from an attached link - if there is one
-                       if (empty($item["title"]) && DI::pConfig()->get($owner['uid'], 'system', 'attach_link_title')) {
+                       if (empty($item['title']) && DI::pConfig()->get($owner['uid'], 'system', 'attach_link_title')) {
                                $page_data = BBCode::getAttachmentData($item['body']);
                                if (!empty($page_data['type']) && !empty($page_data['title']) && ($page_data['type'] == 'link')) {
                                        $title = $page_data['title'];
                                }
                        }
 
+                       // @todo Check if this is obsolete and if we are still using different owners. (Possibly a fragment from the forum functionality)
                        if ($item['author-link'] != $item['owner-link']) {
-                               $body = BBCode::getShareOpeningTag($item['author-name'], $item['author-link'], $item['author-avatar'],
-                                       $item['plink'], $item['created']) . $body . '[/share]';
+                               $body = DI::contentItem()->createSharedBlockByArray($item);
                        }
 
                        // convert to markdown
@@ -3409,7 +3385,7 @@ class Diaspora
 
                        // Adding the title
                        if (strlen($title)) {
-                               $body = "### ".html_entity_decode($title)."\n\n".$body;
+                               $body = '### ' . html_entity_decode($title) . "\n\n" . $body;
                        }
 
                        $attachments = Post\Media::getByURIId($item['uri-id'], [Post\Media::DOCUMENT, Post\Media::TORRENT, Post\Media::UNKNOWN]);
@@ -3422,27 +3398,29 @@ class Diaspora
 
                        $location = [];
 
-                       if ($item["location"] != "")
-                               $location["address"] = $item["location"];
+                       if ($item['location'] != '')
+                               $location['address'] = $item['location'];
 
-                       if ($item["coord"] != "") {
-                               $coord = explode(" ", $item["coord"]);
-                               $location["lat"] = $coord[0];
-                               $location["lng"] = $coord[1];
+                       if ($item['coord'] != '') {
+                               $coord = explode(' ', $item['coord']);
+                               $location['lat'] = $coord[0];
+                               $location['lng'] = $coord[1];
                        }
 
-                       $message = ["author" => $myaddr,
-                                       "guid" => $item["guid"],
-                                       "created_at" => $created,
-                                       "edited_at" => $edited,
-                                       "public" => $public,
-                                       "text" => $body,
-                                       "provider_display_name" => $item["app"],
-                                       "location" => $location];
+                       $message = [
+                               'author' => $myaddr,
+                               'guid' => $item['guid'],
+                               'created_at' => $created,
+                               'edited_at' => $edited,
+                               'public' => $public,
+                               'text' => $body,
+                               'provider_display_name' => $item['app'],
+                               'location' => $location
+                       ];
 
                        // Diaspora rejects messages when they contain a location without "lat" or "lng"
-                       if (!isset($location["lat"]) || !isset($location["lng"])) {
-                               unset($message["location"]);
+                       if (!isset($location['lat']) || !isset($location['lng'])) {
+                               unset($message['location']);
                        }
 
                        if ($item['event-id'] > 0) {
@@ -3461,21 +3439,23 @@ class Diaspora
                                }
                        }
 
-                       $type = "status_message";
+                       $type = 'status_message';
                }
 
-               $msg = ["type" => $type, "message" => $message];
+               $msg = [
+                       'type'    => $type,
+                       'message' => $message
+               ];
 
                DI::cache()->set($cachekey, $msg, Duration::QUARTER_HOUR);
 
                return $msg;
        }
 
-       private static function prependParentAuthorMention($body, $profile_url)
+       private static function prependParentAuthorMention(string $body, string $profile_url): string
        {
-               $profile = Contact::getByURL($profile_url, false, ['addr', 'name', 'contact-type']);
+               $profile = Contact::getByURL($profile_url, false, ['addr', 'name']);
                if (!empty($profile['addr'])
-                       && $profile['contact-type'] != Contact::TYPE_COMMUNITY
                        && !strstr($body, $profile['addr'])
                        && !strstr($body, $profile_url)
                ) {
@@ -3497,11 +3477,11 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function sendStatus(array $item, array $owner, array $contact, $public_batch = false)
+       public static function sendStatus(array $item, array $owner, array $contact, bool $public_batch = false): int
        {
                $status = self::buildStatus($item, $owner);
 
-               return self::buildAndTransmit($owner, $contact, $status["type"], $status["message"], $public_batch, $item["guid"]);
+               return self::buildAndTransmit($owner, $contact, $status['type'], $status['message'], $public_batch, $item['guid']);
        }
 
        /**
@@ -3510,30 +3490,32 @@ class Diaspora
         * @param array $item  The item that will be exported
         * @param array $owner the array of the item owner
         *
-        * @return array The data for a "like"
+        * @return array|bool The data for a "like" or false on error
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         */
        private static function constructLike(array $item, array $owner)
        {
-               $parent = Post::selectFirst(['guid', 'uri', 'thr-parent'], ['uri' => $item["thr-parent"]]);
+               $parent = Post::selectFirst(['guid', 'uri', 'thr-parent'], ['uri' => $item['thr-parent']]);
                if (!DBA::isResult($parent)) {
                        return false;
                }
 
-               $target_type = ($parent["uri"] === $parent["thr-parent"] ? "Post" : "Comment");
+               $target_type = ($parent['uri'] === $parent['thr-parent'] ? 'Post' : 'Comment');
                $positive = null;
                if ($item['verb'] === Activity::LIKE) {
-                       $positive = "true";
+                       $positive = 'true';
                } elseif ($item['verb'] === Activity::DISLIKE) {
-                       $positive = "false";
+                       $positive = 'false';
                }
 
-               return(["author" => self::myHandle($owner),
-                               "guid" => $item["guid"],
-                               "parent_guid" => $parent["guid"],
-                               "parent_type" => $target_type,
-                               "positive" => $positive,
-                               "author_signature" => ""]);
+               return [
+                       'author'           => self::myHandle($owner),
+                       'guid'             => $item['guid'],
+                       'parent_guid'      => $parent['guid'],
+                       'parent_type'      => $target_type,
+                       'positive'         => $positive,
+                       'author_signature' => '',
+               ];
        }
 
        /**
@@ -3542,7 +3524,7 @@ class Diaspora
         * @param array $item  The item that will be exported
         * @param array $owner the array of the item owner
         *
-        * @return array The data for an "EventParticipation"
+        * @return array|bool The data for an "EventParticipation" or false on error
         * @throws \Exception
         */
        private static function constructAttend(array $item, array $owner)
@@ -3563,15 +3545,17 @@ class Diaspora
                                $attend_answer = 'tentative';
                                break;
                        default:
-                               Logger::notice('Unknown verb '.$item['verb'].' in item '.$item['guid']);
+                               Logger::warning('Unknown verb ' . $item['verb'] . ' in item ' . $item['guid']);
                                return false;
                }
 
-               return(["author" => self::myHandle($owner),
-                               "guid" => $item["guid"],
-                               "parent_guid" => $parent["guid"],
-                               "status" => $attend_answer,
-                               "author_signature" => ""]);
+               return [
+                       'author' => self::myHandle($owner),
+                       'guid' => $item['guid'],
+                       'parent_guid' => $parent['guid'],
+                       'status' => $attend_answer,
+                       'author_signature' => ''
+               ];
        }
 
        /**
@@ -3585,7 +3569,7 @@ class Diaspora
         */
        private static function constructComment(array $item, array $owner)
        {
-               $cachekey = "diaspora:constructComment:".$item['guid'];
+               $cachekey = 'diaspora:constructComment:' . $item['guid'];
 
                $result = DI::cache()->get($cachekey);
                if (!is_null($result)) {
@@ -3619,17 +3603,17 @@ class Diaspora
                }
 
                $text = html_entity_decode(BBCode::toMarkdown($body));
-               $created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
-               $edited = DateTimeFormat::utc($item["edited"], DateTimeFormat::ATOM);
+               $created = DateTimeFormat::utc($item['created'], DateTimeFormat::ATOM);
+               $edited = DateTimeFormat::utc($item['edited'], DateTimeFormat::ATOM);
 
                $comment = [
-                       "author"      => self::myHandle($owner),
-                       "guid"        => $item["guid"],
-                       "created_at"  => $created,
-                       "edited_at"   => $edited,
-                       "parent_guid" => $toplevel_item["guid"],
-                       "text"        => $text,
-                       "author_signature" => ""
+                       'author'      => self::myHandle($owner),
+                       'guid'        => $item['guid'],
+                       'created_at'  => $created,
+                       'edited_at'   => $edited,
+                       'parent_guid' => $toplevel_item['guid'],
+                       'text'        => $text,
+                       'author_signature' => '',
                ];
 
                // Send the thread parent guid only if it is a threaded comment
@@ -3639,7 +3623,7 @@ class Diaspora
 
                DI::cache()->set($cachekey, $comment, Duration::QUARTER_HOUR);
 
-               return($comment);
+               return $comment;
        }
 
        /**
@@ -3654,26 +3638,26 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function sendFollowup(array $item, array $owner, array $contact, $public_batch = false)
+       public static function sendFollowup(array $item, array $owner, array $contact, bool $public_batch = false): int
        {
                if (in_array($item['verb'], [Activity::ATTEND, Activity::ATTENDNO, Activity::ATTENDMAYBE])) {
                        $message = self::constructAttend($item, $owner);
-                       $type = "event_participation";
-               } elseif (in_array($item["verb"], [Activity::LIKE, Activity::DISLIKE])) {
+                       $type = 'event_participation';
+               } elseif (in_array($item['verb'], [Activity::LIKE, Activity::DISLIKE])) {
                        $message = self::constructLike($item, $owner);
-                       $type = "like";
-               } elseif (!in_array($item["verb"], [Activity::FOLLOW, Activity::TAG])) {
+                       $type = 'like';
+               } elseif (!in_array($item['verb'], [Activity::FOLLOW, Activity::TAG])) {
                        $message = self::constructComment($item, $owner);
-                       $type = "comment";
+                       $type = 'comment';
                }
 
                if (empty($message)) {
-                       return false;
+                       return -1;
                }
 
-               $message["author_signature"] = self::signature($owner, $message);
+               $message['author_signature'] = self::signature($owner, $message);
 
-               return self::buildAndTransmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
+               return self::buildAndTransmit($owner, $contact, $type, $message, $public_batch, $item['guid']);
        }
 
        /**
@@ -3687,43 +3671,43 @@ class Diaspora
         * @return int The result of the transmission
         * @throws \Exception
         */
-       public static function sendRelay(array $item, array $owner, array $contact, $public_batch = false)
+       public static function sendRelay(array $item, array $owner, array $contact, bool $public_batch = false): int
        {
-               if ($item["deleted"]) {
+               if ($item['deleted']) {
                        return self::sendRetraction($item, $owner, $contact, $public_batch, true);
-               } elseif (in_array($item["verb"], [Activity::LIKE, Activity::DISLIKE])) {
-                       $type = "like";
+               } elseif (in_array($item['verb'], [Activity::LIKE, Activity::DISLIKE])) {
+                       $type = 'like';
                } else {
-                       $type = "comment";
+                       $type = 'comment';
                }
 
-               Logger::info("Got relayable data ".$type." for item ".$item["guid"]." (".$item["id"].")");
+               Logger::info('Got relayable data ' . $type . ' for item ' . $item['guid'] . ' (' . $item['id'] . ')');
 
                $msg = json_decode($item['signed_text'], true);
 
                $message = [];
                if (is_array($msg)) {
                        foreach ($msg as $field => $data) {
-                               if (!$item["deleted"]) {
-                                       if ($field == "diaspora_handle") {
-                                               $field = "author";
+                               if (!$item['deleted']) {
+                                       if ($field == 'diaspora_handle') {
+                                               $field = 'author';
                                        }
-                                       if ($field == "target_type") {
-                                               $field = "parent_type";
+                                       if ($field == 'target_type') {
+                                               $field = 'parent_type';
                                        }
                                }
 
                                $message[$field] = $data;
                        }
                } else {
-                       Logger::info("Signature text for item ".$item["guid"]." (".$item["id"].") couldn't be extracted: ".$item['signed_text']);
+                       Logger::info('Signature text for item ' . $item['guid'] . ' (' . $item['id'] . ') could not be extracted: ' . $item['signed_text']);
                }
 
-               $message["parent_author_signature"] = self::signature($owner, $message);
+               $message['parent_author_signature'] = self::signature($owner, $message);
 
                Logger::info('Relayed data', ['msg' => $message]);
 
-               return self::buildAndTransmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
+               return self::buildAndTransmit($owner, $contact, $type, $message, $public_batch, $item['guid']);
        }
 
        /**
@@ -3738,27 +3722,29 @@ class Diaspora
         * @return int The result of the transmission
         * @throws \Exception
         */
-       public static function sendRetraction(array $item, array $owner, array $contact, $public_batch = false, $relay = false)
+       public static function sendRetraction(array $item, array $owner, array $contact, bool $public_batch = false, bool $relay = false): int
        {
-               $itemaddr = self::handleFromContact($item["contact-id"], $item["author-id"]);
+               $itemaddr = self::handleFromContact($item['contact-id'], $item['author-id']);
 
-               $msg_type = "retraction";
+               $msg_type = 'retraction';
 
                if ($item['gravity'] == GRAVITY_PARENT) {
-                       $target_type = "Post";
-               } elseif (in_array($item["verb"], [Activity::LIKE, Activity::DISLIKE])) {
-                       $target_type = "Like";
+                       $target_type = 'Post';
+               } elseif (in_array($item['verb'], [Activity::LIKE, Activity::DISLIKE])) {
+                       $target_type = 'Like';
                } else {
-                       $target_type = "Comment";
+                       $target_type = 'Comment';
                }
 
-               $message = ["author" => $itemaddr,
-                               "target_guid" => $item['guid'],
-                               "target_type" => $target_type];
+               $message = [
+                       'author' => $itemaddr,
+                       'target_guid' => $item['guid'],
+                       'target_type' => $target_type
+               ];
 
                Logger::info('Got message', ['msg' => $message]);
 
-               return self::buildAndTransmit($owner, $contact, $msg_type, $message, $public_batch, $item["guid"]);
+               return self::buildAndTransmit($owner, $contact, $msg_type, $message, $public_batch, $item['guid']);
        }
 
        /**
@@ -3772,44 +3758,44 @@ class Diaspora
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         * @throws \ImagickException
         */
-       public static function sendMail(array $item, array $owner, array $contact)
+       public static function sendMail(array $item, array $owner, array $contact): int
        {
                $myaddr = self::myHandle($owner);
 
-               $cnv = DBA::selectFirst('conv', [], ['id' => $item["convid"], 'uid' => $item["uid"]]);
+               $cnv = DBA::selectFirst('conv', [], ['id' => $item['convid'], 'uid' => $item['uid']]);
                if (!DBA::isResult($cnv)) {
-                       Logger::notice("conversation not found.");
-                       return;
+                       Logger::notice('Conversation not found.');
+                       return -1;
                }
 
-               $body = BBCode::toMarkdown($item["body"]);
-               $created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
+               $body = BBCode::toMarkdown($item['body']);
+               $created = DateTimeFormat::utc($item['created'], DateTimeFormat::ATOM);
 
                $msg = [
-                       "author" => $myaddr,
-                       "guid" => $item["guid"],
-                       "conversation_guid" => $cnv["guid"],
-                       "text" => $body,
-                       "created_at" => $created,
+                       'author' => $myaddr,
+                       'guid' => $item['guid'],
+                       'conversation_guid' => $cnv['guid'],
+                       'text' => $body,
+                       'created_at' => $created,
                ];
 
-               if ($item["reply"]) {
+               if ($item['reply']) {
                        $message = $msg;
-                       $type = "message";
+                       $type = 'message';
                } else {
                        $message = [
-                               "author" => $cnv["creator"],
-                               "guid" => $cnv["guid"],
-                               "subject" => $cnv["subject"],
-                               "created_at" => DateTimeFormat::utc($cnv['created'], DateTimeFormat::ATOM),
-                               "participants" => $cnv["recips"],
-                               "message" => $msg
+                               'author' => $cnv['creator'],
+                               'guid' => $cnv['guid'],
+                               'subject' => $cnv['subject'],
+                               'created_at' => DateTimeFormat::utc($cnv['created'], DateTimeFormat::ATOM),
+                               'participants' => $cnv['recips'],
+                               'message' => $msg
                        ];
 
-                       $type = "conversation";
+                       $type = 'conversation';
                }
 
-               return self::buildAndTransmit($owner, $contact, $type, $message, false, $item["guid"]);
+               return self::buildAndTransmit($owner, $contact, $type, $message, false, $item['guid']);
        }
 
        /**
@@ -3819,7 +3805,8 @@ class Diaspora
         *
         * @return array The array with "first" and "last"
         */
-       public static function splitName($name) {
+       public static function splitName(string $name): array
+       {
                $name = trim($name);
 
                // Is the name longer than 64 characters? Then cut the rest of it.
@@ -3876,43 +3863,47 @@ class Diaspora
         * @return array The profile data
         * @throws \Friendica\Network\HTTPException\InternalServerErrorException
         */
-       private static function createProfileData($uid)
+       private static function createProfileData(int $uid): array
        {
                $profile = DBA::selectFirst('owner-view', ['uid', 'addr', 'name', 'location', 'net-publish', 'dob', 'about', 'pub_keywords'], ['uid' => $uid]);
+
                if (!DBA::isResult($profile)) {
                        return [];
                }
 
-               $handle = $profile["addr"];
-
                $split_name = self::splitName($profile['name']);
-               $first = $split_name['first'];
-               $last = $split_name['last'];
 
-               $large = DI::baseUrl().'/photo/custom/300/'.$profile['uid'].'.jpg';
-               $medium = DI::baseUrl().'/photo/custom/100/'.$profile['uid'].'.jpg';
-               $small = DI::baseUrl().'/photo/custom/50/'  .$profile['uid'].'.jpg';
-               $searchable = ($profile['net-publish'] ? 'true' : 'false');
+               $data = [
+                       'author'           => $profile['addr'],
+                       'first_name'       => $split_name['first'],
+                       'last_name'        => $split_name['last'],
+                       'image_url'        => DI::baseUrl() . '/photo/custom/300/' . $profile['uid'] . '.jpg',
+                       'image_url_medium' => DI::baseUrl() . '/photo/custom/100/' . $profile['uid'] . '.jpg',
+                       'image_url_small'  => DI::baseUrl() . '/photo/custom/50/'  . $profile['uid'] . '.jpg',
+                       'searchable'       => ($profile['net-publish'] ? 'true' : 'false'),
+                       'birthday'         => null,
+                       'about'            => null,
+                       'location'         => null,
+                       'tag_string'       => null,
+                       'nsfw'             => 'false',
+               ];
 
-               $dob = null;
-               $about = null;
-               $location = null;
-               $tags = null;
-               if ($searchable === 'true') {
-                       $dob = '';
+               if ($data['searchable'] === 'true') {
+                       $data['birthday'] = '';
 
                        if ($profile['dob'] && ($profile['dob'] > '0000-00-00')) {
                                [$year, $month, $day] = sscanf($profile['dob'], '%4d-%2d-%2d');
                                if ($year < 1004) {
                                        $year = 1004;
                                }
-                               $dob = DateTimeFormat::utc($year . '-' . $month . '-'. $day, 'Y-m-d');
+                               $data['birthday'] = DateTimeFormat::utc($year . '-' . $month . '-' . $day, 'Y-m-d');
                        }
 
-                       $about = BBCode::toMarkdown($profile['about']);
+                       $data['about'] = BBCode::toMarkdown($profile['about'] ?? '');
+
+                       $data['location'] = $profile['location'];
+                       $data['tag_string'] = '';
 
-                       $location = $profile['location'];
-                       $tags = '';
                        if ($profile['pub_keywords']) {
                                $kw = str_replace(',', ' ', $profile['pub_keywords']);
                                $kw = str_replace('  ', ' ', $kw);
@@ -3920,61 +3911,55 @@ class Diaspora
                                if (count($arr)) {
                                        for ($x = 0; $x < 5; $x ++) {
                                                if (!empty($arr[$x])) {
-                                                       $tags .= '#'. trim($arr[$x]) .' ';
+                                                       $data['tag_string'] .= '#'. trim($arr[$x]) .' ';
                                                }
                                        }
                                }
                        }
-                       $tags = trim($tags);
-               }
-
-               return ["author" => $handle,
-                               "first_name" => $first,
-                               "last_name" => $last,
-                               "image_url" => $large,
-                               "image_url_medium" => $medium,
-                               "image_url_small" => $small,
-                               "birthday" => $dob,
-                               "bio" => $about,
-                               "location" => $location,
-                               "searchable" => $searchable,
-                               "nsfw" => "false",
-                               "tag_string" => $tags];
+                       $data['tag_string'] = trim($data['tag_string']);
+               }
+
+               return $data;
        }
 
        /**
         * Sends profile data
         *
-        * @param int  $uid    The user id
-        * @param bool $recips optional, default false
+        * @param int   $uid        The user id
+        * @param array $recipients optional, default empty array
+        *
         * @return void
         * @throws \Exception
         */
-       public static function sendProfile($uid, $recips = false)
+       public static function sendProfile(int $uid, array $recipients = [])
        {
                if (!$uid) {
+                       Logger::warning('Parameter "uid" is empty');
                        return;
                }
 
                $owner = User::getOwnerDataById($uid);
-               if (!$owner) {
+               if (empty($owner)) {
+                       Logger::warning('Cannot fetch User record', ['uid' => $uid]);
                        return;
                }
 
-               if (!$recips) {
-                       $recips = DBA::selectToArray('contact', [], ['network' => Protocol::DIASPORA, 'uid' => $uid, 'rel' => [Contact::FOLLOWER, Contact::FRIEND]]);
+               if (empty($recipients)) {
+                       Logger::debug('No recipients provided, fetching for user', ['uid' => $uid]);
+                       $recipients = DBA::selectToArray('contact', [], ['network' => Protocol::DIASPORA, 'uid' => $uid, 'rel' => [Contact::FOLLOWER, Contact::FRIEND]]);
                }
 
-               if (!$recips) {
+               if (empty($recipients)) {
+                       Logger::warning('Cannot fetch recipients', ['uid' => $uid]);
                        return;
                }
 
                $message = self::createProfileData($uid);
 
-               // @ToDo Split this into single worker jobs
-               foreach ($recips as $recip) {
-                       Logger::info("Send updated profile data for user ".$uid." to contact ".$recip["id"]);
-                       self::buildAndTransmit($owner, $recip, "profile", $message);
+               // @todo Split this into single worker jobs
+               foreach ($recipients as $recipient) {
+                       Logger::info('Send updated profile data for user ' . $uid . ' to contact ' . $recipient['id']);
+                       self::buildAndTransmit($owner, $recipient, 'profile', $message);
                }
        }
 
@@ -3984,18 +3969,19 @@ class Diaspora
         * @param integer $uid  The user of that comment
         * @param array   $item Item array
         *
-        * @return array Signed content
+        * @return array|bool Signed content or false on error
         * @throws \Exception
         */
-       public static function createLikeSignature($uid, array $item)
+       public static function createLikeSignature(int $uid, array $item)
        {
                $owner = User::getOwnerDataById($uid);
                if (empty($owner)) {
-                       Logger::info('No owner post, so not storing signature');
+                       Logger::info('No owner post, so not storing signature', ['uid' => $uid]);
                        return false;
                }
 
-               if (!in_array($item["verb"], [Activity::LIKE, Activity::DISLIKE])) {
+               if (!in_array($item['verb'], [Activity::LIKE, Activity::DISLIKE])) {
+                       Logger::warning('Item is neither a like nor a dislike', ['uid' => $uid, 'item[verb]' => $item['verb']]);;
                        return false;
                }
 
@@ -4004,7 +3990,7 @@ class Diaspora
                        return false;
                }
 
-               $message["author_signature"] = self::signature($owner, $message);
+               $message['author_signature'] = self::signature($owner, $message);
 
                return $message;
        }
@@ -4014,11 +4000,12 @@ class Diaspora
         *
         * @param array   $item Item array
         *
-        * @return array Signed content
+        * @return array|bool Signed content or false on error
         * @throws \Exception
         */
        public static function createCommentSignature(array $item)
        {
+               $contact = [];
                if (!empty($item['author-link'])) {
                        $url = $item['author-link'];
                } else {
@@ -4032,7 +4019,7 @@ class Diaspora
 
                $uid = User::getIdForURL($url);
                if (empty($uid)) {
-                       Logger::info('No owner post, so not storing signature', ['url' => $contact['url']]);
+                       Logger::info('No owner post, so not storing signature', ['url' => $contact['url'] ?? 'No contact loaded']);
                        return false;
                }
 
@@ -4047,36 +4034,57 @@ class Diaspora
                        return false;
                }
 
+               if (!self::parentSupportDiaspora($item['thr-parent-id'])) {
+                       Logger::info('One of the parents does not support Diaspora. A signature will not be created.', ['uri-id' => $item['uri-id'], 'guid' => $item['guid']]);
+                       return false;
+               }
+
                $message = self::constructComment($item, $owner);
                if ($message === false) {
                        return false;
                }
 
-               $message["author_signature"] = self::signature($owner, $message);
+               $message['author_signature'] = self::signature($owner, $message);
 
                return $message;
        }
 
-       public static function performReshare(int $UriId, int $uid)
+       /**
+        * Check if the parent and their parents support Diaspora
+        *
+        * @param integer $parent_id
+        * @return boolean
+        */
+       private static function parentSupportDiaspora(int $parent_id): bool
        {
-               $fields = ['uri-id', 'body', 'title', 'author-name', 'author-link', 'author-avatar', 'guid', 'created', 'plink'];
-               $item = Post::selectFirst($fields, ['uri-id' => $UriId, 'uid' => [$uid, 0], 'private' => [Item::PUBLIC, Item::UNLISTED]]);
-               if (!DBA::isResult($item)) {
-                       return 0;
+               $parent_post = Post::selectFirstPost(['gravity', 'signed_text', 'author-link', 'thr-parent-id'], ['uri-id' => $parent_id]);
+               if (empty($parent_post['thr-parent-id'])) {
+                       Logger::warning('Parent post does not exist.', ['parent-id' => $parent_id]);
+                       return false;
                }
 
-               if (strpos($item['body'], '[/share]') !== false) {
-                       $pos = strpos($item['body'], '[share');
-                       $post = substr($item['body'], $pos);
-               } else {
-                       $post = BBCode::getShareOpeningTag($item['author-name'], $item['author-link'], $item['author-avatar'], $item['plink'], $item['created'], $item['guid']);
+               if (empty(FContact::getByURL($parent_post['author-link'], false))) {
+                       Logger::info('Parent author is no Diaspora contact.', ['parent-id' => $parent_id]);
+                       return false;
+               }
 
-                       if (!empty($item['title'])) {
-                               $post .= '[h3]' . $item['title'] . "[/h3]\n";
-                       }
+               if (($parent_post['gravity'] == GRAVITY_COMMENT) && empty($parent_post['signed_text'])) {
+                       Logger::info('Parent comment has got no Diaspora signature.', ['parent-id' => $parent_id]);
+                       return false;
+               }
+
+               if ($parent_post['gravity'] == GRAVITY_COMMENT) {
+                       return self::parentSupportDiaspora($parent_post['thr-parent-id']);
+               }
 
-                       $post .= $item['body'];
-                       $post .= '[/share]';
+               return true;
+       }
+
+       public static function performReshare(int $UriId, int $uid): int
+       {
+               $post = DI::contentItem()->createSharedPostByUriId($UriId, $uid);
+               if (empty($post)) {
+                       return 0;
                }
 
                $owner  = User::getOwnerDataById($uid);
@@ -4089,10 +4097,10 @@ class Diaspora
                        'author-id'  => $author,
                        'owner-id'   => $author,
                        'body'       => $post,
-                       'allow_cid'  => $owner['allow_cid'],
-                       'allow_gid'  => $owner['allow_gid'],
-                       'deny_cid'   => $owner['deny_cid'],
-                       'deny_gid'   => $owner['deny_gid'],
+                       'allow_cid'  => $owner['allow_cid'] ?? '',
+                       'allow_gid'  => $owner['allow_gid']?? '',
+                       'deny_cid'   => $owner['deny_cid'] ?? '',
+                       'deny_gid'   => $owner['deny_gid'] ?? '',
                ];
 
                if (!empty($item['allow_cid'] . $item['allow_gid'] . $item['deny_cid'] . $item['deny_gid'])) {