bugfixes and refactoring, cleanup

php/federator/api.php

@@ -226,10 +226,12 @@ class Api extends Main
         $signature = base64_decode($signatureParts['signature']);
         $signedHeaders = explode(' ', $signatureParts['headers']);
         $keyId = $signatureParts['keyId'];
-
+        $publicKeyPem = false;
+        if ($this->cache !== null) {
             $publicKeyPem = $this->cache->getPublicKey($keyId);
+        }
 
-        if (!isset($publicKeyPem) || $publicKeyPem === false) {
+        if ($publicKeyPem === false) {
             // Fetch public key from `keyId` (usually actor URL + #main-key)
             [$publicKeyData, $info] = \Federator\Main::getFromRemote($keyId, ['Accept: application/activity+json']);
 
@@ -251,8 +253,10 @@ class Api extends Main
             }
 
             // Cache the public key for 1 hour
+            if ($this->cache !== null) {
                 $this->cache->savePublicKey($keyId, $publicKeyPem);
             }
+        }
 
         // Reconstruct the signed string
         $signedString = '';

php/federator/api/fedusers/inbox.php

@@ -54,6 +54,7 @@ class Inbox implements \Federator\Api\FedUsers\FedUsersInterface
         try {
             $this->main->checkSignature($allHeaders);
         } catch (\Federator\Exceptions\PermissionDenied $e) {
+            error_log("signature check failed");
             throw new \Federator\Exceptions\Unauthorized('Inbox::post Signature check failed: ' . $e->getMessage());
         }
 
@@ -64,7 +65,6 @@ class Inbox implements \Federator\Api\FedUsers\FedUsersInterface
         $connector = $this->main->getConnector();
 
         $config = $this->main->getConfig();
-
         if (!is_array($activity)) {
             throw new \Federator\Exceptions\ServerError('Inbox::post Input wasn\'t of type array');
         }
@@ -74,9 +74,9 @@ class Inbox implements \Federator\Api\FedUsers\FedUsersInterface
         if ($inboxActivity === false) {
             throw new \Federator\Exceptions\ServerError('Inbox::post couldn\'t create inboxActivity');
         }
-        $user = $inboxActivity->getAActor(); // url of the sender https://contentnation.net/username
+        $actor = $inboxActivity->getAActor(); // url of the sender https://contentnation.net/username
-        $username = basename((string) (parse_url($user, PHP_URL_PATH) ?? ''));
+        $username = basename((string) (parse_url($actor, PHP_URL_PATH) ?? ''));
-        $domain = parse_url($user, PHP_URL_HOST);
+        $domain = parse_url($actor, PHP_URL_HOST);
         $userId = $username . '@' . $domain;
         $user = \Federator\DIO\FedUser::getUserByName(
             $dbh,
@@ -132,11 +132,31 @@ class Inbox implements \Federator\Api\FedUsers\FedUsersInterface
         }
         $ourDomain = $config['generic']['externaldomain'];
 
+        $finalReceivers = [];
         foreach ($receivers as $receiver) {
             if ($receiver === '' || !is_string($receiver)) {
                 continue;
             }
-
+            if (!str_contains($receiver, $ourDomain) && $receiver !== $_user) {
+                continue;
+            }
+            // check if receiver is an actor url from our domain
+            if ($receiver !== $_user) {
+                $receiverName = basename((string) (parse_url($receiver, PHP_URL_PATH) ?? ''));
+                $ourDomain = parse_url($receiver, PHP_URL_HOST);
+                if ($receiverName === null || $ourDomain === null) {
+                    error_log('Inbox::post no receiverName or domain found for receiver: ' . $receiver);
+                    continue;
+                }
+                if ($receiverName[0] === '@') {
+                    $receiverName = substr($receiverName, 1);
+                }
+                $receiver = $receiverName;
+            }
+            $finalReceivers[] = $receiver;
+        }
+        $finalReceivers = array_unique($finalReceivers); // remove duplicates
+        foreach ($finalReceivers as $receiver) {
             if (str_ends_with($receiver, '/followers')) {
                 $actor = $inboxActivity->getAActor();
                 if ($actor === null || !is_string($actor)) {
@@ -147,6 +167,7 @@ class Inbox implements \Federator\Api\FedUsers\FedUsersInterface
                 // Extract username from the actor URL
                 $username = basename((string) (parse_url($actor, PHP_URL_PATH) ?? ''));
                 $domain = parse_url($actor, PHP_URL_HOST);
+                error_log("url $actor to username $username domain $domain");
                 if ($username === null || $domain === null) {
                     error_log('Inbox::post no username or domain found for recipient: ' . $receiver);
                     continue;
@@ -168,19 +189,6 @@ class Inbox implements \Federator\Api\FedUsers\FedUsersInterface
                     $users = array_merge($users, array_column($followers, 'id'));
                 }
             } else {
-                // check if receiver is an actor url from our domain
-                if (!str_contains($receiver, $ourDomain) && $receiver !== $_user) {
-                    continue;
-                }
-                if ($receiver !== $_user) {
-                    $receiverName = basename((string) (parse_url($receiver, PHP_URL_PATH) ?? ''));
-                    $ourDomain = parse_url($receiver, PHP_URL_HOST);
-                    if ($receiverName === null || $ourDomain === null) {
-                        error_log('Inbox::post no receiverName or domain found for receiver: ' . $receiver);
-                        continue;
-                    }
-                    $receiver = $receiverName;
-                }
                 try {
                     $localUser = \Federator\DIO\User::getUserByName(
                         $dbh,
@@ -193,7 +201,7 @@ class Inbox implements \Federator\Api\FedUsers\FedUsersInterface
                     continue;
                 }
                 if ($localUser === null || $localUser->id === null) {
-                    error_log('Inbox::post couldn\'t find user: ' . $receiver);
+                    error_log('Inbox::post 210 couldn\'t find user: ' . $receiver);
                     continue;
                 }
                 $users[] = $localUser->id;
@@ -203,7 +211,7 @@ class Inbox implements \Federator\Api\FedUsers\FedUsersInterface
         $users = array_unique($users); // remove duplicates
 
         if (empty($users)) { // todo remove after proper implementation, debugging for now
-            $rootDir = PROJECT_ROOT . '/';
+            $rootDir = '/tmp/';
             // Save the raw input and parsed JSON to a file for inspection
             file_put_contents(
                 $rootDir . 'logs/inbox.log',
@@ -213,6 +221,17 @@ class Inbox implements \Federator\Api\FedUsers\FedUsersInterface
             );
         }
 
+        // Set the Redis backend for Resque
+        $rconfig = parse_ini_file($_SERVER['DOCUMENT_ROOT'] . '/../rediscache.ini');
+        $redisUrl = sprintf(
+            'redis://%s:%s@%s:%d?password-encoding=u',
+            urlencode($rconfig['username']),
+            urlencode($rconfig['password']),
+            $rconfig['host'],
+            intval($rconfig['port'], 10)
+        );
+        \Resque::setBackend($redisUrl);
+
         foreach ($users as $receiver) {
             if (!isset($receiver)) {
                 continue;
@@ -238,209 +257,6 @@ class Inbox implements \Federator\Api\FedUsers\FedUsersInterface
                     . json_encode($inboxActivity, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT));
             }
         }
-
-        $connector->sendActivity($user, $inboxActivity);
-
         return 'success';
     }
-
-    /**
-     * handle post call for specific user
-     *
-     * @param \mysqli $dbh database handle
-     * @param \Federator\Connector\Connector $connector connector to use
-     * @param \Federator\Cache\Cache|null $cache optional caching service
-     * @param string $_user user that triggered the post
-     * @param string $_recipientId recipient of the post
-     * @param \Federator\Data\ActivityPub\Common\Activity $inboxActivity the activity that we received
-     * @return boolean response
-     */
-    public static function postForUser($dbh, $connector, $cache, $_user, $_recipientId, $inboxActivity)
-    {
-        if (!isset($_user)) {
-            error_log('Inbox::postForUser no user given');
-            return false;
-        }
-
-        // get sender
-        $user = \Federator\DIO\FedUser::getUserByName(
-            $dbh,
-            $_user,
-            $cache
-        );
-        if ($user === null || $user->id === null) {
-            error_log('Inbox::postForUser couldn\'t find user: ' . $_user);
-            return false;
-        }
-
-        $type = strtolower($inboxActivity->getType());
-
-        if ($_recipientId === '') {
-            if ($type === 'undo' || $type === 'delete') {
-                switch ($type) {
-                    case 'delete':
-                        // Delete Note/Post
-                        $object = $inboxActivity->getObject();
-                        if (is_string($object)) {
-                            \Federator\DIO\Posts::deletePost($dbh, $object);
-                        } elseif (is_object($object)) {
-                            $objectId = $object->getID();
-                            \Federator\DIO\Posts::deletePost($dbh, $objectId);
-                        } else {
-                            error_log('Inbox::postForUser Error in Delete Post for user ' . $user->id
-                                . ', object is not a string or object');
-                            error_log(' object of type ' . gettype($object));
-                            return false;
-                        }
-                        break;
-
-                    case 'undo':
-                        $object = $inboxActivity->getObject();
-                        if (is_object($object)) {
-                            switch (strtolower($object->getType())) {
-                                case 'like':
-                                case 'dislike':
-                                    // Undo Like/Dislike (remove like/dislike)
-                                    $targetId = $object->getID();
-                                    // \Federator\DIO\Votes::removeVote($dbh, $user->id, $targetId, 'dislike');
-                                    \Federator\DIO\Posts::deletePost($dbh, $targetId);
-                                    break;
-                                case 'note':
-                                case 'article':
-                                    // Undo Note (remove note)
-                                    $noteId = $object->getID();
-                                    \Federator\DIO\Posts::deletePost($dbh, $noteId);
-                                    break;
-                            }
-                        }
-                        break;
-
-                    default:
-                        error_log('Inbox::postForUser Unhandled activity type ' . $type . ' for user ' . $user->id);
-                        break;
-                }
-
-                return true;
-            }
-        }
-
-        $atPos = strpos($_recipientId, '@');
-        if ($atPos !== false) {
-            $_recipientId = substr($_recipientId, 0, $atPos);
-        }
-
-        // get recipient
-        $recipient = \Federator\DIO\User::getUserByName(
-            $dbh,
-            $_recipientId,
-            $connector,
-            $cache
-        );
-        if ($recipient === null || $recipient->id === null) {
-            error_log('Inbox::postForUser couldn\'t find recipient: ' . $_recipientId);
-            return false;
-        }
-
-        $rootDir = PROJECT_ROOT . '/';
-        // Save the raw input and parsed JSON to a file for inspection
-        file_put_contents(
-            $rootDir . 'logs/inbox_' . $recipient->id . '.log',
-            date('Y-m-d H:i:s') . ": ==== POST " . $recipient->id . " Inbox Activity ====\n"
-                . json_encode($inboxActivity, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT) . "\n\n",
-            FILE_APPEND
-        );
-
-        switch ($type) {
-            case 'follow':
-                $success = \Federator\DIO\Followers::addExternalFollow(
-                    $dbh,
-                    $inboxActivity->getID(),
-                    $user->id,
-                    $recipient->id
-                );
-
-                if ($success === false) {
-                    error_log('Inbox::postForUser Failed to add follower for user ' . $user->id);
-                }
-                break;
-
-            case 'delete':
-                // Delete Note/Post
-                $object = $inboxActivity->getObject();
-                if (is_string($object)) {
-                    \Federator\DIO\Posts::deletePost($dbh, $object);
-                } elseif (is_object($object)) {
-                    $objectId = $object->getID();
-                    \Federator\DIO\Posts::deletePost($dbh, $objectId);
-                }
-                break;
-
-            case 'undo':
-                $object = $inboxActivity->getObject();
-                if (is_object($object)) {
-                    switch (strtolower($object->getType())) {
-                        case 'follow':
-                            $success = false;
-                            if ($object instanceof \Federator\Data\ActivityPub\Common\Activity) {
-                                $actor = $object->getAActor();
-                                if ($actor !== '') {
-                                    $success = \Federator\DIO\Followers::removeFollow($dbh, $user->id, $recipient->id);
-                                }
-                            }
-                            if ($success === false) {
-                                error_log('Inbox::postForUser Failed to remove follower for user ' . $user->id);
-                            }
-                            break;
-                        case 'like':
-                        case 'dislike':
-                            // Undo Like/Dislike (remove like/dislike)
-                            $targetId = $object->getID();
-                            \Federator\DIO\Votes::removeVote($dbh, $user->id, $targetId);
-                            // \Federator\DIO\Posts::deletePost($dbh, $targetId);
-                            break;
-                        case 'note':
-                            // Undo Note (remove note)
-                            $noteId = $object->getID();
-                            \Federator\DIO\Posts::deletePost($dbh, $noteId);
-                            break;
-                    }
-                }
-                break;
-
-            case 'like':
-            case 'dislike':
-                // Add Like/Dislike
-                $targetId = $inboxActivity->getObject();
-                if (is_string($targetId)) {
-                    \Federator\DIO\Votes::addVote($dbh, $user->id, $targetId, $type);
-                } else {
-                    error_log('Inbox::postForUser Error in Add Like/Dislike for user ' . $user->id
-                        . ', targetId is not a string');
-                    return false;
-                }
-                break;
-
-            case 'create':
-            case 'update':
-                $object = $inboxActivity->getObject();
-                if (is_object($object)) {
-                    switch (strtolower($object->getType())) {
-                        case 'note':
-                            \Federator\DIO\Posts::savePost($dbh, $user->id, $inboxActivity);
-                            break;
-                        case 'article':
-                            \Federator\DIO\Posts::savePost($dbh, $user->id, $inboxActivity);
-                            break;
-                        default:
-                            \Federator\DIO\Posts::savePost($dbh, $user->id, $inboxActivity);
-                            break;
-                    }
-                }
-                break;
-            default:
-                error_log('Inbox::postForUser Unhandled activity type $type for user ' . $user->id);
-                break;
-        }
-        return true;
-    }
 }

php/federator/api/v1/newcontent.php

@@ -454,7 +454,7 @@ class NewContent implements \Federator\Api\APIInterface
         }
 
         try {
-            $response = self::sendActivity($dbh, $host, $user, $recipient, $newActivity);
+            $response = \Federator\DIO\Server::sendActivity($dbh, $host, $user, $recipient, $newActivity);
         } catch (\Exception $e) {
             error_log('NewContent::postForUser Failed to send activity: ' . $e->getMessage());
             return false;
@@ -469,99 +469,6 @@ class NewContent implements \Federator\Api\APIInterface
         return true;
     }
 
-    /**
-     * send activity to federated server
-     *
-     * @param \mysqli $dbh database handle
-     * @param string $host host url of our server (e.g. federator)
-     * @param \Federator\Data\User $sender source user
-     * @param \Federator\Data\FedUser $target federated target user
-     * @param \Federator\Data\ActivityPub\Common\Activity $activity activity to send
-     * @return string|true the generated follow ID on success, false on failure
-     */
-    public static function sendActivity($dbh, $host, $sender, $target, $activity)
-    {
-        if ($dbh === false) {
-            throw new \Federator\Exceptions\ServerError('NewContent::sendActivity Failed to get database handle');
-        }
-
-        $inboxUrl = $target->inboxURL;
-
-        $json = json_encode($activity, JSON_UNESCAPED_SLASHES);
-
-        if ($json === false) {
-            throw new \Exception('Failed to encode JSON: ' . json_last_error_msg());
-        }
-        $digest = 'SHA-256=' . base64_encode(hash('sha256', $json, true));
-        $date = gmdate('D, d M Y H:i:s') . ' GMT';
-        $parsed = parse_url($inboxUrl);
-        if ($parsed === false) {
-            throw new \Exception('Failed to parse URL: ' . $inboxUrl);
-        }
-
-        if (!isset($parsed['host']) || !isset($parsed['path'])) {
-            throw new \Exception('Invalid inbox URL: missing host or path');
-        }
-        $extHost = $parsed['host'];
-        $path = $parsed['path'];
-
-        // Build the signature string
-        $signatureString = "(request-target): post {$path}\n" .
-            "host: {$extHost}\n" .
-            "date: {$date}\n" .
-            "digest: {$digest}";
-
-        // Get rsa private key
-        $privateKey = \Federator\DIO\User::getrsaprivate($dbh, $sender->id); // OR from DB
-        if ($privateKey === false) {
-            throw new \Exception('Failed to get private key');
-        }
-        $pkeyId = openssl_pkey_get_private($privateKey);
-
-        if ($pkeyId === false) {
-            throw new \Exception('Invalid private key');
-        }
-
-        openssl_sign($signatureString, $signature, $pkeyId, OPENSSL_ALGO_SHA256);
-        $signature_b64 = base64_encode($signature);
-
-        // Build keyId (public key ID from your actor object)
-        $keyId = $host . '/' . $sender->id . '#main-key';
-
-        $signatureHeader = 'keyId="' . $keyId
-            . '",algorithm="rsa-sha256",headers="(request-target) host date digest",signature="' . $signature_b64 . '"';
-
-        $ch = curl_init($inboxUrl);
-        if ($ch === false) {
-            throw new \Exception('Failed to initialize cURL');
-        }
-        $headers = [
-            'Host: ' . $extHost,
-            'Date: ' . $date,
-            'Digest: ' . $digest,
-            'Content-Type: application/activity+json',
-            'Signature: ' . $signatureHeader,
-            'Accept: application/activity+json',
-        ];
-
-        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-        curl_setopt($ch, CURLOPT_POST, true);
-        curl_setopt($ch, CURLOPT_POSTFIELDS, $json);
-        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
-        $response = curl_exec($ch);
-        curl_close($ch);
-
-        if ($response === false) {
-            throw new \Exception('Failed to send activity: ' . curl_error($ch));
-        } else {
-            $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
-            if ($httpcode != 200 && $httpcode != 202) {
-                throw new \Exception('Unexpected HTTP code ' . $httpcode . ':' . $response);
-            }
-        }
-        return $response;
-    }
-
     /**
      * get internal represenation as json string
      * @return string json string or html

php/federator/dio/feduser.php

@@ -20,7 +20,7 @@ class FedUser
      * @param string $_user user/profile name
      * @return void
      */
-    protected static function addLocalUser($dbh, $user, $_user)
+    protected static function addUserToDB($dbh, $user, $_user)
     {
         // check if it is timed out user
         $sql = 'select unix_timestamp(`validuntil`) from fedusers where id=?';
@@ -28,7 +28,7 @@ class FedUser
         if ($stmt === false) {
             throw new \Federator\Exceptions\ServerError('FedUser::addLocalUser Failed to prepare statement');
         }
-        $stmt->bind_param("s", $_user);
+        $stmt->bind_param('s', $_user);
         $validuntil = 0;
         $ret = $stmt->bind_result($validuntil);
         $stmt->execute();
@@ -118,7 +118,7 @@ class FedUser
         $stmt->close();
         // if a new user, create own database entry with additionally needed info
         if ($user->id === null || $validuntil < time()) {
-            self::addLocalUser($dbh, $user, $_user);
+            self::addUserToDB($dbh, $user, $_user);
         }
 
         // no further processing for now
@@ -205,6 +205,9 @@ class FedUser
                     throw new \Federator\Exceptions\ServerError('FedUser::getUserByName Failed to find self link '
                         . 'in webfinger for ' . $_name);
                 }
+            } else {
+                $remoteURL = $_name;
+            }
             // fetch the user
             $headers = ['Accept: application/activity+json'];
             [$response, $info] = \Federator\Main::getFromRemote($remoteURL, $headers);
@@ -232,11 +235,10 @@ class FedUser
             }
             $user = \Federator\Data\FedUser::createFromJson($data);
         }
-        }
 
         if ($cache !== null && $user !== false) {
             if ($user->id !== null && $user->actorURL !== null) {
-                self::addLocalUser($dbh, $user, $_name);
+                self::addUserToDB($dbh, $user, $_name);
             }
             $cache->saveRemoteFedUserByName($_name, $user);
         }
@@ -245,4 +247,223 @@ class FedUser
         }
         return $user;
     }
+
+    /**
+     * handle post call for specific user
+     *
+     * @param \Federator\Main $main main instance
+     * @param \mysqli $dbh database handle
+     * @param \Federator\Connector\Connector $connector connector to use
+     * @param \Federator\Cache\Cache|null $cache optional caching service
+     * @param string $_user user that triggered the post
+     * @param string $_recipientId recipient of the post
+     * @param \Federator\Data\ActivityPub\Common\Activity $inboxActivity the activity that we received
+     * @return boolean response
+     */
+    public static function inboxForUser($main, $dbh, $connector, $cache, $_user, $_recipientId, $inboxActivity)
+    {
+        if (!isset($_user)) {
+            error_log('Inbox::postForUser no user given');
+            return false;
+        }
+
+        // get sender
+        $user = \Federator\DIO\FedUser::getUserByName(
+            $dbh,
+            $_user,
+            $cache
+        );
+        if ($user === null || $user->id === null) {
+            error_log('Inbox::postForUser couldn\'t find user: ' . $_user);
+            return false;
+        }
+
+        $type = strtolower($inboxActivity->getType());
+
+        if ($_recipientId === '') {
+            if ($type === 'undo' || $type === 'delete') {
+                switch ($type) {
+                    case 'delete':
+                        // Delete Note/Post
+                        $object = $inboxActivity->getObject();
+                        if (is_string($object)) {
+                            \Federator\DIO\Posts::deletePost($dbh, $object);
+                        } elseif (is_object($object)) {
+                            $objectId = $object->getID();
+                            \Federator\DIO\Posts::deletePost($dbh, $objectId);
+                        } else {
+                            error_log('Inbox::postForUser Error in Delete Post for user ' . $user->id
+                                . ', object is not a string or object');
+                            error_log(' object of type ' . gettype($object));
+                            return false;
+                        }
+                        break;
+
+                    case 'undo':
+                        $object = $inboxActivity->getObject();
+                        if (is_object($object)) {
+                            switch (strtolower($object->getType())) {
+                                case 'like':
+                                case 'dislike':
+                                    // Undo Like/Dislike (remove like/dislike)
+                                    $targetId = $object->getID();
+                                    // \Federator\DIO\Votes::removeVote($dbh, $user->id, $targetId, 'dislike');
+                                    \Federator\DIO\Posts::deletePost($dbh, $targetId);
+                                    break;
+                                case 'note':
+                                case 'article':
+                                    // Undo Note (remove note)
+                                    $noteId = $object->getID();
+                                    \Federator\DIO\Posts::deletePost($dbh, $noteId);
+                                    break;
+                            }
+                        }
+                        break;
+
+                    default:
+                        error_log('Inbox::postForUser Unhandled activity type ' . $type . ' for user ' . $user->id);
+                        break;
+                }
+
+                return true;
+            }
+        }
+
+        $atPos = strpos($_recipientId, '@');
+        if ($atPos !== false) {
+            $_recipientId = substr($_recipientId, 0, $atPos);
+        }
+
+        // get recipient
+        $recipient = \Federator\DIO\User::getUserByName(
+            $dbh,
+            $_recipientId,
+            $connector,
+            $cache
+        );
+        if ($recipient === null || $recipient->id === null) {
+            error_log('Inbox::postForUser couldn\'t find recipient: ' . $_recipientId);
+            return false;
+        }
+
+        $rootDir = $_SERVER['DOCUMENT_ROOT'] .  '../';
+        // Save the raw input and parsed JSON to a file for inspection
+        file_put_contents(
+            $rootDir . 'logs/inbox_' . $recipient->id . '.log',
+            date('Y-m-d H:i:s') . ": ==== POST " . $recipient->id . " Inbox Activity ====\n"
+                . json_encode($inboxActivity, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT) . "\n\n",
+            FILE_APPEND
+        );
+
+        switch ($type) {
+            case 'follow':
+                $success = \Federator\DIO\Followers::addExternalFollow(
+                    $dbh,
+                    $inboxActivity->getID(),
+                    $user->id,
+                    $recipient->id
+                );
+
+                if ($success === true) {
+                    // send accept back
+                    $accept = new \Federator\Data\ActivityPub\Common\Accept();
+                    $local = $inboxActivity->getObject();
+                    if (is_string($local)) {
+                        $accept->setAActor($local);
+                        $id = bin2hex(openssl_random_pseudo_bytes(4));
+                        $accept->setID($local . '#accepts/follows/' . $id);
+                        $obj = new \Federator\Data\ActivityPub\Common\Activity($inboxActivity->getType());
+                        $config = $main->getConfig();
+                        $ourhost = $config['generic']['protocol'] . '://' . $config['generic']['externaldomain'];
+                        $obj->setID($ourhost . '/' . $id);
+                        $obj->setAActor($inboxActivity->getAActor());
+                        $obj->setObject($local);
+                        $accept->setObject($obj);
+                        // send
+                        \Federator\DIO\Server::sendActivity($dbh, $ourhost, $recipient, $user, $accept);
+                    }
+                } else {
+                    error_log('Inbox::postForUser Failed to add follower for user ' . $user->id);
+                }
+                break;
+
+            case 'delete':
+                // Delete Note/Post
+                $object = $inboxActivity->getObject();
+                if (is_string($object)) {
+                    \Federator\DIO\Posts::deletePost($dbh, $object);
+                } elseif (is_object($object)) {
+                    $objectId = $object->getID();
+                    \Federator\DIO\Posts::deletePost($dbh, $objectId);
+                }
+                break;
+
+            case 'undo':
+                $object = $inboxActivity->getObject();
+                if (is_object($object)) {
+                    switch (strtolower($object->getType())) {
+                        case 'follow':
+                            $success = false;
+                            if ($object instanceof \Federator\Data\ActivityPub\Common\Activity) {
+                                $actor = $object->getAActor();
+                                if ($actor !== '') {
+                                    $success = \Federator\DIO\Followers::removeFollow($dbh, $user->id, $recipient->id);
+                                }
+                            }
+                            if ($success === false) {
+                                error_log('Inbox::postForUser Failed to remove follower for user ' . $user->id);
+                            }
+                            break;
+                        case 'like':
+                        case 'dislike':
+                            // Undo Like/Dislike (remove like/dislike)
+                            $targetId = $object->getID();
+                            \Federator\DIO\Votes::removeVote($dbh, $user->id, $targetId);
+                            // \Federator\DIO\Posts::deletePost($dbh, $targetId);
+                            break;
+                        case 'note':
+                            // Undo Note (remove note)
+                            $noteId = $object->getID();
+                            \Federator\DIO\Posts::deletePost($dbh, $noteId);
+                            break;
+                    }
+                }
+                break;
+
+            case 'like':
+            case 'dislike':
+                // Add Like/Dislike
+                $targetId = $inboxActivity->getObject();
+                if (is_string($targetId)) {
+                    \Federator\DIO\Votes::addVote($dbh, $user->id, $targetId, $type);
+                } else {
+                    error_log('Inbox::postForUser Error in Add Like/Dislike for user ' . $user->id
+                        . ', targetId is not a string');
+                    return false;
+                }
+                break;
+
+            case 'create':
+            case 'update':
+                $object = $inboxActivity->getObject();
+                if (is_object($object)) {
+                    switch (strtolower($object->getType())) {
+                        case 'note':
+                            \Federator\DIO\Posts::savePost($dbh, $user->id, $inboxActivity);
+                            break;
+                        case 'article':
+                            \Federator\DIO\Posts::savePost($dbh, $user->id, $inboxActivity);
+                            break;
+                        default:
+                            \Federator\DIO\Posts::savePost($dbh, $user->id, $inboxActivity);
+                            break;
+                    }
+                }
+                break;
+            default:
+                error_log('Inbox::postForUser Unhandled activity type $type for user ' . $user->id);
+                break;
+        }
+        return true;
+    }
 }

php/federator/dio/server.php

@@ -0,0 +1,108 @@
+<?php
+/**
+ * SPDX-FileCopyrightText: 2025 Sascha Nitsch (grumpydeveloper) https://contentnation.net/@grumpydevelop
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * @author Sascha Nitsch (grumpyveveloper)
+ **/
+
+namespace Federator\DIO;
+
+/**
+ * Do the Server2Server communication
+ */
+class Server
+{
+    /**
+     * send activity to federated server
+     *
+     * @param \mysqli $dbh database handle
+     * @param string $ourhost host url of our server (e.g. federator)
+     * @param \Federator\Data\User $sender source user
+     * @param \Federator\Data\FedUser $receiver federated user to receive the activity
+     * @param \Federator\Data\ActivityPub\Common\Activity $activity activity to send
+     * @return boolean true on success
+     */
+    public static function sendActivity($dbh, $ourhost, $sender, $receiver, $activity)
+    {
+        $receiverInboxUrl = $receiver->inboxURL;
+
+        $json = json_encode($activity, JSON_UNESCAPED_SLASHES);
+
+        if ($json === false) {
+            throw new \Exception('Failed to encode JSON: ' . json_last_error_msg());
+        }
+        $digest = 'SHA-256=' . base64_encode(hash('sha256', $json, true));
+        $date = gmdate('D, d M Y H:i:s') . ' GMT';
+        echo "inboxurl $receiverInboxUrl\n";
+        $parsedReceiverInboxUrl = parse_url($receiverInboxUrl);
+        if ($parsedReceiverInboxUrl === false) {
+            throw new \Exception('Failed to parse URL: ' . $receiverInboxUrl);
+        }
+
+        if (!isset($parsedReceiverInboxUrl['host']) || !isset($parsedReceiverInboxUrl['path'])) {
+            throw new \Exception('Invalid inbox URL: missing host or path');
+        }
+        $extHost = $parsedReceiverInboxUrl['host'];
+        $path = $parsedReceiverInboxUrl['path'];
+
+        // Build the signature string
+        $signatureString = "(request-target): post {$path}\n" .
+            "host: {$extHost}\n" .
+            "date: {$date}\n" .
+            "digest: {$digest}";
+
+        // Get rsa private key
+        $privateKey = \Federator\DIO\User::getrsaprivate($dbh, $sender->id); // OR from DB
+        if ($privateKey === false) {
+            throw new \Exception('Failed to get private key');
+        }
+        $pkeyId = openssl_pkey_get_private($privateKey);
+
+        if ($pkeyId === false) {
+            throw new \Exception('Invalid private key');
+        }
+echo "signaturestring $signatureString\n";
+        openssl_sign($signatureString, $signature, $pkeyId, OPENSSL_ALGO_SHA256);
+        $signature_b64 = base64_encode($signature);
+
+        // Build keyId (public key ID from your actor object)
+        $keyId = $ourhost . '/' . $sender->id . '#main-key';
+
+        $signatureHeader = 'keyId="' . $keyId
+            . '",algorithm="rsa-sha256",headers="(request-target) host date digest",signature="' . $signature_b64 . '"';
+
+        $ch = curl_init($receiverInboxUrl);
+        if ($ch === false) {
+            throw new \Exception('Failed to initialize cURL');
+        }
+        $headers = [
+            'Host: ' . $extHost,
+            'Date: ' . $date,
+            'Digest: ' . $digest,
+            'Content-Type: application/activity+json',
+            'Signature: ' . $signatureHeader,
+            'Accept: application/activity+json',
+        ];
+print_r($headers);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+        curl_setopt($ch, CURLOPT_POST, true);
+        curl_setopt($ch, CURLOPT_POSTFIELDS, $json);
+        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
+        $response = curl_exec($ch);
+        curl_close($ch);
+
+        if ($response === false) {
+            throw new \Exception('Failed to send activity: ' . curl_error($ch));
+        } else {
+            $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+            if ($httpcode != 200 && $httpcode != 202) {
+                throw new \Exception('Unexpected HTTP code ' . $httpcode . ':' . $response);
+            }
+        }
+        if ($response !== true) {
+            error_log($response);
+        }
+        return true;
+    }
+}

php/federator/jobs/inboxjob.php

@@ -64,7 +64,8 @@ class InboxJob extends \Federator\Api
             return false;
         }
 
-        \Federator\Api\FedUsers\Inbox::postForUser(
+        \Federator\DIO\FedUser::inboxForUser(
+            $this,
             $this->dbh,
             $this->connector,
             $this->cache,

php/federator/main.php

@@ -20,7 +20,7 @@ class Main
      *
      * @var Cache\Cache $cache
      */
-    protected $cache;
+    protected $cache = null;
 
     /**
      * current config

php/federator/test.php

@@ -143,7 +143,8 @@ class Test
         $inboxActivity->setAActor('https://mastodon.local/users/admin');
         $inboxActivity->setObject($_url);
         $inboxActivity->setID("https://mastodon.local/users/admin#like/" . md5($_url));
-        \Federator\Api\FedUsers\Inbox::postForUser(
+        \Federator\DIO\FedUser::inboxForUser(
+            $api,
             $dbh,
             $api->getConnector(),
             null,

php/federator/workers/worker_inbox.php

@@ -1,14 +1,18 @@
 <?php
 
 define('PROJECT_ROOT', dirname(__DIR__, 3));
-
 require_once PROJECT_ROOT . '/vendor/autoload.php';
+$_SERVER['DOCUMENT_ROOT'] = PROJECT_ROOT . '/htdocs/';
+
+spl_autoload_register(static function (string $className) {
+    include PROJECT_ROOT . '/php/' . str_replace("\\", "/", strtolower($className)) . '.php';
+});
 
 $config = parse_ini_file(PROJECT_ROOT . '/rediscache.ini');
 
 // Set the Redis backend for Resque
 $redisUrl = sprintf(
-    'redis://%s:%s@%s:%d',
+    'redis://%s:%s@%s:%d?password-encoding=u',
     urlencode($config['username']),
     urlencode($config['password']),
     $config['host'],

progress.md

@@ -19,10 +19,10 @@ primary goal is to connect ContentNation via ActivityPub again.
 - [X] full cache for users
 - [X] webfinger
 - [X] discovery endpoints
-- [ ] ap outbox
+- [X] ap outbox
-- [ ] ap inbox
+- [X] ap inbox
 - [ ] support for AP profile in service
 - [ ] support for article
 - [ ] support for comment
 - [ ] posting comments from ap to service
-- [ ] callback from service to add new input
+- [X] callback from service to add new input

templates/federator/user.json

@@ -58,7 +58,7 @@
             {rdelim}
         {rdelim}
     ],
-    "id":"https://{$fqdn}/@{$username}",
+    "id":"https://{$fqdn}/{$username}",
     "type":"{$type}",
     "following":"https://{$fqdn}/{$username}/following",
     "followers":"https://{$fqdn}/{$username}/followers",
@@ -75,7 +75,7 @@
     "published":"{$registered}",
     "publicKey":{ldelim}
         "id":"https://{$fqdn}/{$username}#main-key",
-    "owner":"https://{$sourcedomain}/@{$username}",
+        "owner":"https://{$sourcedomain}/{$username}",
         "publicKeyPem":"{$publickey}"
     {rdelim},
     "tag":[],

templates/federator/webfinger_acct.json

@@ -4,7 +4,7 @@
     "https://{$sourcedomain}/@{$username}"
   ],
   "links": [
-    {ldelim}"rel": "self", "type": "application/activity+json", "href": "https://{$domain}/@{$username}"{rdelim},
+    {ldelim}"rel": "self", "type": "application/activity+json", "href": "https://{$domain}/{$username}"{rdelim},
 {if $type=='Group'}
     {ldelim}"rel": "http://webfinger.net/rel/profile-page", "type": "text/html", "href": "https://{$domain}/@{$username}/"{rdelim},
 {/if}