authCheck(); $this->validate($request, [ 'acct' => 'required|string|min:3|max:255', ]); $acct = $request->input('acct'); $nickname = Nickname::normalizeProfileUrl($acct); return view('federation.authorizefollow', compact('acct', 'nickname')); } public function remoteFollow() { $this->authCheck(); return view('federation.remotefollow'); } public function remoteFollowStore(Request $request) { $this->authCheck(); $this->validate($request, [ 'url' => 'required|string', ]); if (config('pixelfed.remote_follow_enabled') !== true) { abort(403); } $follower = Auth::user()->profile; $url = $request->input('url'); RemoteFollowPipeline::dispatch($follower, $url); return redirect()->back(); } public function nodeinfoWellKnown() { $res = [ 'links' => [ [ 'href' => config('pixelfed.nodeinfo.url'), 'rel' => 'http://nodeinfo.diaspora.software/ns/schema/2.0', ], ], ]; return response()->json($res); } public function nodeinfo() { $res = Cache::remember('api:nodeinfo', now()->addHours(1), function () { return [ 'metadata' => [ 'nodeName' => config('app.name'), 'software' => [ 'homepage' => 'https://pixelfed.org', 'github' => 'https://github.com/pixelfed', 'follow' => 'https://mastodon.social/@pixelfed', ], 'captcha' => (bool) config('pixelfed.recaptcha'), ], 'openRegistrations' => config('pixelfed.open_registration'), 'protocols' => [ 'activitypub', ], 'services' => [ 'inbound' => [], 'outbound' => [], ], 'software' => [ 'name' => 'pixelfed', 'version' => config('pixelfed.version'), ], 'usage' => [ 'localPosts' => \App\Status::whereLocal(true)->whereHas('media')->count(), 'localComments' => \App\Status::whereLocal(true)->whereNotNull('in_reply_to_id')->count(), 'users' => [ 'total' => \App\User::count(), 'activeHalfyear' => \App\AccountLog::select('user_id')->whereAction('auth.login')->where('updated_at', '>',Carbon::now()->subMonths(6)->toDateTimeString())->groupBy('user_id')->get()->count(), 'activeMonth' => \App\AccountLog::select('user_id')->whereAction('auth.login')->where('updated_at', '>',Carbon::now()->subMonths(1)->toDateTimeString())->groupBy('user_id')->get()->count(), ], ], 'version' => '2.0', ]; }); return response()->json($res, 200, [ 'Access-Control-Allow-Origin' => '*' ]); } public function webfinger(Request $request) { $this->validate($request, ['resource'=>'required|string|min:3|max:255']); $resource = $request->input('resource'); $hash = hash('sha256', $resource); $parsed = Nickname::normalizeProfileUrl($resource); $username = $parsed['username']; $profile = Profile::whereUsername($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) { $path = route('well-known.webfinger'); $xml = << XML; return response($xml)->header('Content-Type', 'application/xrd+xml'); } public function userOutbox(Request $request, $username) { if (config('pixelfed.activitypub_enabled') == false) { abort(403); } $profile = Profile::whereNull('remote_url')->whereUsername($username)->firstOrFail(); if($profile->status != null) { return ProfileController::accountCheck($profile); } if($profile->is_private) { return response()->json(['error'=>'403', 'msg' => 'private profile'], 403); } $timeline = $profile->statuses()->whereVisibility('public')->orderBy('created_at', 'desc')->paginate(10); $fractal = new Fractal\Manager(); $resource = new Fractal\Resource\Item($profile, new ProfileOutbox()); $res = $fractal->createData($resource)->toArray(); return response(json_encode($res['data']))->header('Content-Type', 'application/activity+json'); } public function userInbox(Request $request, $username) { if (config('pixelfed.activitypub_enabled') == false) { abort(403); } $profile = Profile::whereNull('domain')->whereUsername($username)->firstOrFail(); if($profile->status != null) { return ProfileController::accountCheck($profile); } $body = $request->getContent(); $bodyDecoded = json_decode($body, true, 8); 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 = $request->header('date'); if(!$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(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']); } $pkey = openssl_pkey_get_public($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 = $request->header('signature'); if(!$signature) { abort(400, 'Missing signature header'); } $signatureData = HttpSignature::parseSignatureHeader($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) { if (config('pixelfed.activitypub_enabled') == false) { abort(403); } $profile = Profile::whereNull('remote_url') ->whereUsername($username) ->whereIsPrivate(false) ->firstOrFail(); if($profile->status != null) { return ProfileController::accountCheck($profile); } $obj = [ '@context' => 'https://www.w3.org/ns/activitystreams', 'id' => $request->getUri(), 'type' => 'OrderedCollectionPage', 'totalItems' => $profile->following()->count(), 'orderedItems' => $profile->following->map(function($f) { return $f->permalink(); }) ]; return response()->json($obj); } public function userFollowers(Request $request, $username) { if (config('pixelfed.activitypub_enabled') == false) { abort(403); } $profile = Profile::whereNull('remote_url') ->whereUsername($username) ->whereIsPrivate(false) ->firstOrFail(); if($profile->status != null) { return ProfileController::accountCheck($profile); } $obj = [ '@context' => 'https://www.w3.org/ns/activitystreams', 'id' => $request->getUri(), 'type' => 'OrderedCollectionPage', 'totalItems' => $profile->followers()->count(), 'orderedItems' => $profile->followers->map(function($f) { return $f->permalink(); }) ]; return response()->json($obj); } }