json(Nodeinfo::wellKnown()); } public function nodeinfo() { abort_if(!config('federation.nodeinfo.enabled'), 404); return response()->json(Nodeinfo::get()) ->header('Access-Control-Allow-Origin','*'); } public function webfinger(Request $request) { abort_if(!config('federation.webfinger.enabled'), 400); abort_if(!$request->filled('resource'), 400); $resource = $request->input('resource'); $parsed = Nickname::normalizeProfileUrl($resource); if($parsed['domain'] !== config('pixelfed.domain.app')) { abort(400); } $username = $parsed['username']; $profile = Profile::whereNull('domain')->whereUsername($username)->firstOrFail(); if($profile->status != null) { return ProfileController::accountCheck($profile); } $webfinger = (new Webfinger($profile))->generate(); return response()->json($webfinger, 200, [], JSON_PRETTY_PRINT); } public function hostMeta(Request $request) { abort_if(!config('federation.webfinger.enabled'), 404); $path = route('well-known.webfinger'); $xml = ''; return response($xml)->header('Content-Type', 'application/xrd+xml'); } public function userOutbox(Request $request, $username) { abort_if(!config('federation.activitypub.enabled'), 404); abort_if(!config('federation.activitypub.outbox'), 404); $profile = Profile::whereNull('domain') ->whereNull('status') ->whereIsPrivate(false) ->whereUsername($username) ->firstOrFail(); $key = 'ap:outbox:latest_10:pid:' . $profile->id; $ttl = now()->addMinutes(15); $res = Cache::remember($key, $ttl, function() use($profile) { return Outbox::get($profile); }); return response(json_encode($res, JSON_UNESCAPED_SLASHES))->header('Content-Type', 'application/activity+json'); } public function userInbox(Request $request, $username) { abort_if(!config('federation.activitypub.enabled'), 404); abort_if(!config('federation.activitypub.inbox'), 404); $headers = $request->headers->all(); $payload = $request->getContent(); InboxValidator::dispatch($username, $headers, $payload); // $profile = Profile::whereNull('domain')->whereUsername($username)->firstOrFail(); // if($profile->status != null) { // return ProfileController::accountCheck($profile); // } // $body = $request->getContent(); // $bodyDecoded = json_decode($body, true, 12); // if($this->verifySignature($request, $profile) == true) { // InboxWorker::dispatch($request->headers->all(), $profile, $bodyDecoded); // } else if($this->blindKeyRotation($request, $profile) == true) { // InboxWorker::dispatch($request->headers->all(), $profile, $bodyDecoded); // } else { // abort(400, 'Bad Signature'); // } return; } protected function verifySignature(Request $request, Profile $profile) { $body = $request->getContent(); $bodyDecoded = json_decode($body, true, 8); $signature = $request->header('signature'); $date = $request->header('date'); $digest = $request->header('digest'); if(!$digest) { abort(400, 'Missing digest header'); } if(!$signature) { abort(400, 'Missing signature header'); } if(!$date) { abort(400, 'Missing date header'); } if(!now()->parse($date)->gt(now()->subDays(1)) || !now()->parse($date)->lt(now()->addDays(1))) { abort(400, 'Invalid date'); } $signatureData = HttpSignature::parseSignatureHeader($signature); $keyId = Helpers::validateUrl($signatureData['keyId']); $id = Helpers::validateUrl($bodyDecoded['id']); $keyDomain = parse_url($keyId, PHP_URL_HOST); $idDomain = parse_url($id, PHP_URL_HOST); if($keyDomain == config('pixelfed.domain.app') || $idDomain == config('pixelfed.domain.app')) { return false; } if(isset($bodyDecoded['object']) && is_array($bodyDecoded['object']) && isset($bodyDecoded['object']['attributedTo']) ) { if(parse_url($bodyDecoded['object']['attributedTo'], PHP_URL_HOST) !== $keyDomain) { abort(400, 'Invalid request'); } } if(!$keyDomain || !$idDomain || $keyDomain !== $idDomain) { abort(400, 'Invalid request'); } $actor = Profile::whereKeyId($keyId)->first(); if(!$actor) { $actor = Helpers::profileFirstOrNew($bodyDecoded['actor']); } if(!$actor) { return false; } $pkey = openssl_pkey_get_public($actor->public_key); $inboxPath = "/users/{$profile->username}/inbox"; list($verified, $headers) = HttpSignature::verify($pkey, $signatureData, $request->headers->all(), $inboxPath, $body); if($verified == 1) { return true; } else { return false; } } protected function blindKeyRotation(Request $request, Profile $profile) { $signature = $request->header('signature'); $date = $request->header('date'); if(!$signature) { abort(400, 'Missing signature header'); } if(!$date) { abort(400, 'Missing date header'); } if(!now()->parse($date)->gt(now()->subDays(1)) || !now()->parse($date)->lt(now()->addDays(1))) { abort(400, 'Invalid date'); } $signatureData = HttpSignature::parseSignatureHeader($signature); $keyId = Helpers::validateUrl($signatureData['keyId']); $actor = Profile::whereKeyId($keyId)->whereNotNull('remote_url')->firstOrFail(); $res = Zttp::timeout(5)->withHeaders([ 'Accept' => 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"', 'User-Agent' => 'PixelfedBot v0.1 - https://pixelfed.org', ])->get($actor->remote_url); $res = json_decode($res->body(), true, 8); if($res['publicKey']['id'] !== $actor->key_id) { return false; } $actor->public_key = $res['publicKey']['publicKeyPem']; $actor->save(); return $this->verifySignature($request, $profile); } public function userFollowing(Request $request, $username) { abort_if(!config('federation.activitypub.enabled'), 404); $profile = Profile::whereNull('remote_url') ->whereUsername($username) ->whereIsPrivate(false) ->firstOrFail(); if($profile->status != null) { abort(404); } $obj = [ '@context' => 'https://www.w3.org/ns/activitystreams', 'id' => $request->getUri(), 'type' => 'OrderedCollectionPage', 'totalItems' => 0, 'orderedItems' => [] ]; return response()->json($obj); } public function userFollowers(Request $request, $username) { abort_if(!config('federation.activitypub.enabled'), 404); $profile = Profile::whereNull('remote_url') ->whereUsername($username) ->whereIsPrivate(false) ->firstOrFail(); if($profile->status != null) { abort(404); } $obj = [ '@context' => 'https://www.w3.org/ns/activitystreams', 'id' => $request->getUri(), 'type' => 'OrderedCollectionPage', 'totalItems' => 0, 'orderedItems' => [] ]; return response()->json($obj); } }