import {PusherRoom} from "../Model/PusherRoom"; import {CharacterLayer, ExSocketInterface} from "../Model/Websocket/ExSocketInterface"; import { GroupDeleteMessage, ItemEventMessage, PlayGlobalMessage, RoomJoinedMessage, ServerToClientMessage, SetPlayerDetailsMessage, SilentMessage, SubMessage, ReportPlayerMessage, UserLeftMessage, UserMovesMessage, ViewportMessage, WebRtcSignalToServerMessage, QueryJitsiJwtMessage, SendJitsiJwtMessage, JoinRoomMessage, CharacterLayerMessage, PusherToBackMessage, WorldFullMessage, AdminPusherToBackMessage, ServerToAdminClientMessage, UserJoinedRoomMessage, UserLeftRoomMessage, AdminMessage, BanMessage, RefreshRoomMessage } from "../Messages/generated/messages_pb"; import {ProtobufUtils} from "../Model/Websocket/ProtobufUtils"; import {JITSI_ISS, SECRET_JITSI_KEY} from "../Enum/EnvironmentVariable"; import {adminApi, CharacterTexture} from "./AdminApi"; import {emitInBatch} from "./IoSocketHelpers"; import Jwt from "jsonwebtoken"; import {JITSI_URL} from "../Enum/EnvironmentVariable"; import {clientEventsEmitter} from "./ClientEventsEmitter"; import {gaugeManager} from "./GaugeManager"; import {apiClientRepository} from "./ApiClientRepository"; import {GroupDescriptor, UserDescriptor, ZoneEventListener} from "_Model/Zone"; import Debug from "debug"; import {ExAdminSocketInterface} from "_Model/Websocket/ExAdminSocketInterface"; import {WebSocket} from "uWebSockets.js"; const debug = Debug('socket'); interface AdminSocketRoomsList { [index: string]: number; } interface AdminSocketUsersList { [index: string]: boolean; } export interface AdminSocketData { rooms: AdminSocketRoomsList, users: AdminSocketUsersList, } export class SocketManager implements ZoneEventListener { private rooms: Map = new Map(); private sockets: Map = new Map(); constructor() { clientEventsEmitter.registerToClientJoin((clientUUid: string, roomId: string) => { gaugeManager.incNbClientPerRoomGauge(roomId); }); clientEventsEmitter.registerToClientLeave((clientUUid: string, roomId: string) => { gaugeManager.decNbClientPerRoomGauge(roomId); }); } async handleAdminRoom(client: ExAdminSocketInterface, roomId: string): Promise { const apiClient = await apiClientRepository.getClient(roomId); const adminRoomStream = apiClient.adminRoom(); client.adminConnection = adminRoomStream; adminRoomStream.on('data', (message: ServerToAdminClientMessage) => { if (message.hasUserjoinedroom()) { const userJoinedRoomMessage = message.getUserjoinedroom() as UserJoinedRoomMessage; if (!client.disconnecting) { client.send(JSON.stringify({ type: 'MemberJoin', data: { uuid: userJoinedRoomMessage.getUuid(), name: userJoinedRoomMessage.getName(), ipAddress: userJoinedRoomMessage.getIpaddress(), roomId: roomId, } })); } } else if (message.hasUserleftroom()) { const userLeftRoomMessage = message.getUserleftroom() as UserLeftRoomMessage; if (!client.disconnecting) { client.send(JSON.stringify({ type: 'MemberLeave', data: { uuid: userLeftRoomMessage.getUuid() } })); } } else { throw new Error('Unexpected admin message'); } }).on('end', () => { console.warn('Admin connection lost to back server'); // Let's close the front connection if the back connection is closed. This way, we can retry connecting from the start. if (!client.disconnecting) { this.closeWebsocketConnection(client, 1011, 'Connection lost to back server'); } console.log('A user left'); }).on('error', (err: Error) => { console.error('Error in connection to back server:', err); if (!client.disconnecting) { this.closeWebsocketConnection(client, 1011, 'Error while connecting to back server'); } }); const message = new AdminPusherToBackMessage(); message.setSubscribetoroom(roomId); adminRoomStream.write(message); } leaveAdminRoom(socket : ExAdminSocketInterface) { if (socket.adminConnection) { socket.adminConnection.end(); } } getAdminSocketDataFor(roomId:string): AdminSocketData { throw new Error('Not reimplemented yet'); /*const data:AdminSocketData = { rooms: {}, users: {}, } const room = this.Worlds.get(roomId); if (room === undefined) { return data; } const users = room.getUsers(); data.rooms[roomId] = users.size; users.forEach(user => { data.users[user.uuid] = true }) return data;*/ } async handleJoinRoom(client: ExSocketInterface): Promise { const viewport = client.viewport; try { const joinRoomMessage = new JoinRoomMessage(); joinRoomMessage.setUseruuid(client.userUuid); joinRoomMessage.setIpaddress(client.IPAddress); joinRoomMessage.setRoomid(client.roomId); joinRoomMessage.setName(client.name); joinRoomMessage.setPositionmessage(ProtobufUtils.toPositionMessage(client.position)); joinRoomMessage.setTagList(client.tags); joinRoomMessage.setCompanion(client.companion); for (const characterLayer of client.characterLayers) { const characterLayerMessage = new CharacterLayerMessage(); characterLayerMessage.setName(characterLayer.name); if (characterLayer.url !== undefined) { characterLayerMessage.setUrl(characterLayer.url); } joinRoomMessage.addCharacterlayer(characterLayerMessage); } console.log('Calling joinRoom') const apiClient = await apiClientRepository.getClient(client.roomId); const streamToPusher = apiClient.joinRoom(); clientEventsEmitter.emitClientJoin(client.userUuid, client.roomId); client.backConnection = streamToPusher; streamToPusher.on('data', (message: ServerToClientMessage) => { if (message.hasRoomjoinedmessage()) { client.userId = (message.getRoomjoinedmessage() as RoomJoinedMessage).getCurrentuserid(); // TODO: do we need this.sockets anymore? this.sockets.set(client.userId, client); // If this is the first message sent, send back the viewport. this.handleViewport(client, viewport); } if (message.hasRefreshroommessage()) { const refreshMessage:RefreshRoomMessage = message.getRefreshroommessage() as unknown as RefreshRoomMessage; this.refreshRoomData(refreshMessage.getRoomid(), refreshMessage.getVersionnumber()) } // Let's pass data over from the back to the client. if (!client.disconnecting) { client.send(message.serializeBinary().buffer, true); } }).on('end', () => { console.warn('Connection lost to back server'); // Let's close the front connection if the back connection is closed. This way, we can retry connecting from the start. if (!client.disconnecting) { this.closeWebsocketConnection(client, 1011, 'Connection lost to back server'); } console.log('A user left'); }).on('error', (err: Error) => { console.error('Error in connection to back server:', err); if (!client.disconnecting) { this.closeWebsocketConnection(client, 1011, 'Error while connecting to back server'); } }); const pusherToBackMessage = new PusherToBackMessage(); pusherToBackMessage.setJoinroommessage(joinRoomMessage); streamToPusher.write(pusherToBackMessage); } catch (e) { console.error('An error occurred on "join_room" event'); console.error(e); } } private closeWebsocketConnection(client: ExSocketInterface|ExAdminSocketInterface, code: number, reason: string) { client.disconnecting = true; //this.leaveRoom(client); //client.close(); client.end(code, reason); } handleViewport(client: ExSocketInterface, viewport: ViewportMessage.AsObject) { try { client.viewport = viewport; const world = this.rooms.get(client.roomId); if (!world) { console.error("In SET_VIEWPORT, could not find world with id '", client.roomId, "'"); return; } world.setViewport(client, client.viewport); } catch (e) { console.error('An error occurred on "SET_VIEWPORT" event'); console.error(e); } } handleUserMovesMessage(client: ExSocketInterface, userMovesMessage: UserMovesMessage) { const pusherToBackMessage = new PusherToBackMessage(); pusherToBackMessage.setUsermovesmessage(userMovesMessage); client.backConnection.write(pusherToBackMessage); const viewport = userMovesMessage.getViewport(); if (viewport === undefined) { throw new Error('Missing viewport in UserMovesMessage'); } // Now, we need to listen to the correct viewport. this.handleViewport(client, viewport.toObject()) } // Useless now, will be useful again if we allow editing details in game handleSetPlayerDetails(client: ExSocketInterface, playerDetailsMessage: SetPlayerDetailsMessage) { const pusherToBackMessage = new PusherToBackMessage(); pusherToBackMessage.setSetplayerdetailsmessage(playerDetailsMessage); client.backConnection.write(pusherToBackMessage); } handleSilentMessage(client: ExSocketInterface, silentMessage: SilentMessage) { const pusherToBackMessage = new PusherToBackMessage(); pusherToBackMessage.setSilentmessage(silentMessage); client.backConnection.write(pusherToBackMessage); } handleItemEvent(client: ExSocketInterface, itemEventMessage: ItemEventMessage) { const pusherToBackMessage = new PusherToBackMessage(); pusherToBackMessage.setItemeventmessage(itemEventMessage); client.backConnection.write(pusherToBackMessage); } async handleReportMessage(client: ExSocketInterface, reportPlayerMessage: ReportPlayerMessage) { try { const reportedSocket = this.sockets.get(reportPlayerMessage.getReporteduserid()); if (!reportedSocket) { throw 'reported socket user not found'; } //TODO report user on admin application await adminApi.reportPlayer(reportedSocket.userUuid, reportPlayerMessage.getReportcomment(), client.userUuid, client.roomId.split('/')[2]) } catch (e) { console.error('An error occurred on "handleReportMessage"'); console.error(e); } } emitVideo(socket: ExSocketInterface, data: WebRtcSignalToServerMessage): void { const pusherToBackMessage = new PusherToBackMessage(); pusherToBackMessage.setWebrtcsignaltoservermessage(data); socket.backConnection.write(pusherToBackMessage); } emitScreenSharing(socket: ExSocketInterface, data: WebRtcSignalToServerMessage): void { const pusherToBackMessage = new PusherToBackMessage(); pusherToBackMessage.setWebrtcscreensharingsignaltoservermessage(data); socket.backConnection.write(pusherToBackMessage); } private searchClientByIdOrFail(userId: number): ExSocketInterface { const client: ExSocketInterface|undefined = this.sockets.get(userId); if (client === undefined) { throw new Error("Could not find user with id " + userId); } return client; } leaveRoom(socket : ExSocketInterface) { // leave previous room and world try { if (socket.roomId) { try { //user leaves room const room: PusherRoom | undefined = this.rooms.get(socket.roomId); if (room) { debug('Leaving room %s.', socket.roomId); room.leave(socket); if (room.isEmpty()) { this.rooms.delete(socket.roomId); debug('Room %s is empty. Deleting.', socket.roomId); } } else { console.error('Could not find the GameRoom the user is leaving!'); } //user leave previous room //Client.leave(Client.roomId); } finally { //delete Client.roomId; this.sockets.delete(socket.userId); clientEventsEmitter.emitClientLeave(socket.userUuid, socket.roomId); console.log('A user left (', this.sockets.size, ' connected users)'); } } } finally { if (socket.backConnection) { socket.backConnection.end(); } } } async getOrCreateRoom(roomId: string): Promise { //check and create new world for a room let world = this.rooms.get(roomId) if(world === undefined){ world = new PusherRoom(roomId, this); if (!world.public) { await this.updateRoomWithAdminData(world); } this.rooms.set(roomId, world); } return Promise.resolve(world) } public async updateRoomWithAdminData(world: PusherRoom): Promise { const data = await adminApi.fetchMapDetails(world.organizationSlug, world.worldSlug, world.roomSlug) world.tags = data.tags; world.policyType = Number(data.policy_type); } emitPlayGlobalMessage(client: ExSocketInterface, playglobalmessage: PlayGlobalMessage) { const pusherToBackMessage = new PusherToBackMessage(); pusherToBackMessage.setPlayglobalmessage(playglobalmessage); client.backConnection.write(pusherToBackMessage); } public getWorlds(): Map { return this.rooms; } searchClientByUuid(uuid: string): ExSocketInterface | null { for(const socket of this.sockets.values()){ if(socket.userUuid === uuid){ return socket; } } return null; } public handleQueryJitsiJwtMessage(client: ExSocketInterface, queryJitsiJwtMessage: QueryJitsiJwtMessage) { try { const room = queryJitsiJwtMessage.getJitsiroom(); const tag = queryJitsiJwtMessage.getTag(); // FIXME: this is not secure. We should load the JSON for the current room and check rights associated to room instead. if (SECRET_JITSI_KEY === '') { throw new Error('You must set the SECRET_JITSI_KEY key to the secret to generate JWT tokens for Jitsi.'); } // Let's see if the current client has const isAdmin = client.tags.includes(tag); const jwt = Jwt.sign({ "aud": "jitsi", "iss": JITSI_ISS, "sub": JITSI_URL, "room": room, "moderator": isAdmin }, SECRET_JITSI_KEY, { expiresIn: '1d', algorithm: "HS256", header: { "alg": "HS256", "typ": "JWT" } }); const sendJitsiJwtMessage = new SendJitsiJwtMessage(); sendJitsiJwtMessage.setJitsiroom(room); sendJitsiJwtMessage.setJwt(jwt); const serverToClientMessage = new ServerToClientMessage(); serverToClientMessage.setSendjitsijwtmessage(sendJitsiJwtMessage); client.send(serverToClientMessage.serializeBinary().buffer, true); } catch (e) { console.error('An error occured while generating the Jitsi JWT token: ', e); } } public async emitSendUserMessage(userUuid: string, message: string, type: string, roomId: string) { /*const client = this.searchClientByUuid(userUuid); if(client) { const adminMessage = new SendUserMessage(); adminMessage.setMessage(message); adminMessage.setType(type); const pusherToBackMessage = new PusherToBackMessage(); pusherToBackMessage.setSendusermessage(adminMessage); client.backConnection.write(pusherToBackMessage); return; }*/ const backConnection = await apiClientRepository.getClient(roomId); const backAdminMessage = new AdminMessage(); backAdminMessage.setMessage(message); backAdminMessage.setRoomid(roomId); backAdminMessage.setRecipientuuid(userUuid); backAdminMessage.setType(type); backConnection.sendAdminMessage(backAdminMessage, (error) => { if (error !== null) { console.error('Error while sending admin message', error); } }); } public async emitBan(userUuid: string, message: string, type: string, roomId: string) { /*const client = this.searchClientByUuid(userUuid); if(client) { const banUserMessage = new BanUserMessage(); banUserMessage.setMessage(message); banUserMessage.setType(type); const pusherToBackMessage = new PusherToBackMessage(); pusherToBackMessage.setBanusermessage(banUserMessage); client.backConnection.write(pusherToBackMessage); return; }*/ const backConnection = await apiClientRepository.getClient(roomId); const banMessage = new BanMessage(); banMessage.setMessage(message); banMessage.setRoomid(roomId); banMessage.setRecipientuuid(userUuid); banMessage.setType(type); backConnection.ban(banMessage, (error) => { if (error !== null) { console.error('Error while sending admin message', error); } }); } /** * Merges the characterLayers received from the front (as an array of string) with the custom textures from the back. */ static mergeCharacterLayersAndCustomTextures(characterLayers: string[], memberTextures: CharacterTexture[]): CharacterLayer[] { const characterLayerObjs: CharacterLayer[] = []; for (const characterLayer of characterLayers) { if (characterLayer.startsWith('customCharacterTexture')) { const customCharacterLayerId: number = +characterLayer.substr(22); for (const memberTexture of memberTextures) { if (memberTexture.id == customCharacterLayerId) { characterLayerObjs.push({ name: characterLayer, url: memberTexture.url }) break; } } } else { characterLayerObjs.push({ name: characterLayer, url: undefined }) } } return characterLayerObjs; } public onUserEnters(user: UserDescriptor, listener: ExSocketInterface): void { const subMessage = new SubMessage(); subMessage.setUserjoinedmessage(user.toUserJoinedMessage()); emitInBatch(listener, subMessage); } public onUserMoves(user: UserDescriptor, listener: ExSocketInterface): void { const subMessage = new SubMessage(); subMessage.setUsermovedmessage(user.toUserMovedMessage()); emitInBatch(listener, subMessage); } public onUserLeaves(userId: number, listener: ExSocketInterface): void { const userLeftMessage = new UserLeftMessage(); userLeftMessage.setUserid(userId); const subMessage = new SubMessage(); subMessage.setUserleftmessage(userLeftMessage); emitInBatch(listener, subMessage); } public onGroupEnters(group: GroupDescriptor, listener: ExSocketInterface): void { const subMessage = new SubMessage(); subMessage.setGroupupdatemessage(group.toGroupUpdateMessage()); emitInBatch(listener, subMessage); } public onGroupMoves(group: GroupDescriptor, listener: ExSocketInterface): void { this.onGroupEnters(group, listener); } public onGroupLeaves(groupId: number, listener: ExSocketInterface): void { const groupDeleteMessage = new GroupDeleteMessage(); groupDeleteMessage.setGroupid(groupId); const subMessage = new SubMessage(); subMessage.setGroupdeletemessage(groupDeleteMessage); emitInBatch(listener, subMessage); } public emitWorldFullMessage(client: WebSocket) { const errorMessage = new WorldFullMessage(); const serverToClientMessage = new ServerToClientMessage(); serverToClientMessage.setWorldfullmessage(errorMessage); client.send(serverToClientMessage.serializeBinary().buffer, true); } private refreshRoomData(roomId: string, versionNumber: number): void { const room = this.rooms.get(roomId); //this function is run for every users connected to the room, so we need to make sure the room wasn't already refreshed. if (!room || !room.needsUpdate(versionNumber)) return; this.updateRoomWithAdminData(room); } } export const socketManager = new SocketManager();