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"json2yaml": "bin/json2yaml", + "yaml2json": "bin/yaml2json" + } + }, + "node_modules/yeast": { + "version": "0.1.2", + "resolved": "https://registry.npmjs.org/yeast/-/yeast-0.1.2.tgz", + "integrity": "sha1-AI4G2AlDIMNy28L47XagymyKxBk=" + } + }, "dependencies": { "accepts": { "version": "1.3.7", diff --git a/public/client.js b/public/client.js index 4666aba..f8b81aa 100644 --- a/public/client.js +++ b/public/client.js @@ -427,7 +427,8 @@ function setup() { document.body.innerHTML = errorMessage; socket.disconnect(); } - + // MM2021HACKING + window.DATA = DATA; ROOMS = DATA.ROOMS; SETTINGS = DATA.SETTINGS; @@ -798,7 +799,7 @@ function newGame() { // players[p.id] = new Player(p); - //console.log("I shall introduce myself to " + p.id); + // console.log("I shall introduce myself to " + p.id); //If I"m not the new player send an introduction to the new player socket.emit("intro", p.id, { diff --git a/requirements.txt b/requirements.txt new file mode 100644 index 0000000..7328baf --- /dev/null +++ b/requirements.txt @@ -0,0 +1,4 @@ +python-socketio==4.6.0 +python-engineio==3.13.2 +Flask-SocketIO==4.3.1 + diff --git a/server.js b/server.js index 4318946..b443fc7 100644 --- a/server.js +++ b/server.js @@ -120,7 +120,7 @@ io.on("connection", function (socket) { //wait for the player to send their name and info, then broadcast them socket.on("join", function (playerInfo) { - + // console.log("join", playerInfo) //console.log("Number of sockets " + Object.keys(io.sockets.connected).length); try { @@ -301,6 +301,7 @@ io.on("connection", function (socket) { //when I receive an intro send it to the recipient socket.on("intro", function (newComer, obj) { //verify the id to make sure a hacked client can"t fake players + // console.log("intro", newComer, obj); if (obj != null) { if (obj.id == socket.id) { diff --git a/server.py b/server.py new file mode 100644 index 0000000..11ef7ab --- /dev/null +++ b/server.py @@ -0,0 +1,582 @@ +import flask +from flask import Flask, render_template +from flask_socketio import SocketIO, send, emit, join_room, leave_room, has_request_context, disconnect +import datetime, time, json, re + + +PACKETS_PER_SECONDS = 30 + +""" +The client and server version strings MUST be the same! +They can be used to force clients to hard refresh to load the latest client. +If the server gets updated it can be restarted, but if there are active clients (users' open browsers) they could be outdated and create issues. +If the VERSION vars are mismatched they will send all clients in an infinite refresh loop. Make sure you update sketch.js before restarting server.js +""" +VERSION = "1.0" + +# TODO... +with open("data.json") as datafile: + DATA = json.load(datafile) + +# time before disconnecting (forgot the tab open?) +ACTIVITY_TIMEOUT = 10 * 60 * 1000 +# should be the same as index maxlength="16" +MAX_NAME_LENGTH = 16 + +# cap the overall players +MAX_PLAYERS = -1 +# refuse people when a room is full +MAX_PLAYERS_PER_ROOM = 200 + +# views since the server started counts relogs +visits = 0 +admins = [] +# We want the server to keep track of the whole game state +# in this case the game state are the attributes of each player +gameState = { + 'players': {}, + 'NPCs': {} +} + +# save the server startup time and send it in case the clients need to syncronize something +START_TIME = datetime.datetime.now() + +# a collection of banned IPs +# not permanent, it lasts until the server restarts +banned = [] + + +app = Flask(__name__, static_url_path='', static_folder='public') +# self.add_url_rule(f"{self.static_url_path}/", endpoint="static", host=static_host, view_func=lambda **kw: self_ref().send_static_file(**kw), # type: ignore # noqa: B950) +app.add_url_rule("/", view_func=lambda **kw: app.send_static_file("index.html", **kw)) +app.config['SECRET_KEY'] = 'secret!' +socketio = SocketIO(app) +connections = 0 + +@socketio.on('connect') +def connect(sid=None, environ=None, auth=None): + global connections + connections += 1 + print (f"A user connected ({connections} connections)") + emit('serverWelcome', (VERSION, DATA, START_TIME.isoformat())) + +@socketio.on('disconnect') +def disconnect(auth=None): + global connections + connections -= 1 + # print ("disconnect") + print(f'Client disconnected ({connections} connections)') + # when a client disconnects I have to delete its player object + # or I would end up with ghost players + try: + print(f"Player disconnected {flask.request.sid}") + playerObject = gameState['players'].get(flask.request.sid); + emit("playerLeft", { 'id': flask.request.sid, 'disconnect': True }, broadcast=True) + # check if there is a custom function in the MOD to call at this point + if playerObject is not None: + if playerObject['room']: + if (playerObject['room']+"Leave" in MOD): + # call it! + MOD[playerObject.room+"Leave"](playerObject, playerObject['room']) + + # send the disconnect + # delete the player object + if flask.request.sid in gameState['players']: + del gameState['players'][flask.request.sid] + print(f"There are now {len(gameState['players'])} players on this server") + except Exception as e: + print(f"Error on disconnect, object malformed from {flask.request.sid}?") + print(f"Exception: {e}") + +@socketio.on('join') +def join (playerInfo): + global visits + # print ("join", playerInfo) + try: + # if running locally it's not gonna work + IP = "" + if (has_request_context() and flask.request.headers): + if (flask.request.headers.get("x-forwarded-for") is not None): + IP = flask.request.headers.get("x-forwarded-for").split(",")[0] + if (playerInfo['nickName'] == ""): + print(f"New user joined the server in lurking mode {flask.request.sid} {IP}") + else: + print(f"New user joined the game: {playerInfo['nickName']} avatar# {playerInfo['avatar']} colors# {playerInfo['colors']} {flask.request.sid}") + + roomPlayers = 1 + # from https://github.com/miguelgrinberg/python-socketio/blob/main/src/socketio/base_manager.py + # manager.rooms = {} # self.rooms[namespace][room][sio_sid] = eio_sid + # io.sockets.adapter (js) == socketio.server.manager (python) + # print ("rooms", socketio.server.manager.rooms) + myRoom = socketio.server.manager.rooms['/'].get(playerInfo['room']) + if myRoom is not None: + roomPlayers = len(myRoom.keys()) + 1 + # roomPlayers = len(list(socketio.server.manager.get_participants('/', playerInfo['room']))) + print (f"There are now {roomPlayers} users in {playerInfo['room']}") + # serverPlayers = Object.keys(io.sockets.connected).length + 1 + serverPlayers = connections + 1 + isBanned = False + + # prevent banned IPs from joining + if (IP != ""): + try: + index = banned.index(IP); + print(f"ATTENTION: banned {IP} is trying to log in again") + isBanned = True + emit("errorMessage", "You have been banned") + disconnect() + except ValueError: + pass + + # prevent secret rooms to be joined through URL + if playerInfo['room'] in DATA['ROOMS']: + if DATA['ROOMS'][playerInfo['room']].get('secret'): + playerInfo['room'] = DATA['SETTINGS']['defaultRoom'] + + if isBanned: + pass + elif flask.request.sid in gameState['players']: + # prevent a hacked client from duplicating players + print(f"ATTENTION: there is already a player associated to the socket {flask.request.sid}") + elif ((serverPlayers > MAX_PLAYERS and MAX_PLAYERS != -1) or (roomPlayers > MAX_PLAYERS_PER_ROOM and MAX_PLAYERS_PER_ROOM != -1)): + # limit the number of players + print(f"ATTENTION: {playerInfo['room']} reached maximum capacity") + emit("errorMessage", "The server is full, please try again later.") + disconnect() + else: + # if client hacked truncate + playerInfo['nickName'] = playerInfo['nickName'][:MAX_NAME_LENGTH] + + # the first validation was to give the player feedback, this one is for real + val = 1 + + # always validate lurkers, they can't do anything + if playerInfo['nickName'] != "": + val = validateName(playerInfo['nickName']) + + if (val == 0 or val == 3): + print(f"ATTENTION: {flask.request.sid} tried to bypass username validation") + else: + #if there is an | strip the after so the password remains in the admin client + combo = playerInfo['nickName'].split("|") + playerInfo['nickName'] = combo[0] + + if (val == 2): + print(f"{playerInfo['nickName']} joins as admin") + + #the player objects on the client will keep track of the room + newPlayer = { 'id': flask.request.sid, 'nickName': filter.clean(playerInfo['nickName']), 'colors': playerInfo['colors'], 'room': playerInfo['room'], 'avatar': playerInfo['avatar'], 'x': playerInfo['x'], 'y': playerInfo['y']} + + # save the same information in my game state + sid = flask.request.sid + gameState['players'][sid] = newPlayer + # set last message at the beginning of time, the SEVENTIES + gameState['players'][sid]['lastMessage'] = 0; + # is it admin? + gameState['players'][sid]['admin'] = (val == 2) + gameState['players'][sid]['spam'] = 0; + gameState['players'][sid]['lastActivity'] = int(time.time()*1000) + gameState['players'][sid]['muted'] = False + gameState['players'][sid]['IP'] = IP + gameState['players'][sid]['floodCount'] = 0 + gameState['players'][sid]['room'] = playerInfo['room'] + + # send the user to the default room + join_room(playerInfo['room']) + + newPlayer['new'] = True + + # let's not count lurkers + if playerInfo['nickName'] != "": + visits += 1 + + #send all players information about the new player + #upon creation destination and position are the same + # print (f"playerJoined {newPlayer} {playerInfo['room']}") + emit("playerJoined", newPlayer, room=playerInfo['room']) + + # check if there are NPCs in this room and make them send info to the player + for NPCId in gameState['NPCs']: + npc = gameState['NPCs'][NPCId] + if npc['room'] == playerInfo['room']: + npc.sendIntroTo(flask.request.sid) + #check if there is a custom function in the MOD to call at this point + if playerInfo['room']+"Join" in MOD: + # call it! + MOD[playerInfo['room']+"Join"](newPlayer, playerInfo['room']) + + print(f"There are now {len(gameState['players'])} players on this server. Total visits {visits}") + except Exception as e: + print(f"Error on join, object malformed from {flask.request.sid}?") + print(f"Exception: {e}") + +@socketio.on('intro') +def intro (newComer, obj): + """ when I receive an intro send it to the recipient """ + # print (f"intro {newComer} {obj}") + # verify the id to make sure a hacked client can"t fake players + if (obj is not None): + if obj['id'] == flask.request.sid: + emit("onIntro", obj, room=newComer) + if (obj['room'] + "Intro" in MOD): + MOD[obj.room + "Intro"](newComer, obj) + else: + print(f"ATTENTION: Illegitimate intro from {flask.request.sid}") + +@socketio.on('talk') +def talk (obj): + """ when I receive a talk send it to everybody in the room """ + try: + mtime = int(time.time()*1000) + + # block if spamming + if (mtime - gameState['players'][flask.request.sid]['lastMessage'] > DATA['SETTINGS']['ANTI_SPAM'] and not gameState['players'][flask.request.sid]['muted']): + + # Admin commands can be typed as messages + # is this an admin + if (gameState['players'][flask.request.sid].get("admin") and obj['message'][0] == "/"): + print(f"Admin {gameState['players'][flask.request.sid]['nickName']} attempts command {obj['message']}") + adminCommand(socket, obj['message']) + + else: + # normal talk stuff + # aphostrophe + obj['message'] = obj['message'].replace("’", "'") + + # replace unmapped characters + # obj.message = obj.message.replace(/[^A-Za-z0-9_!$%*()@./#&+-|]*$/g, ""); + obj['message'] = re.sub(r'[^A-Za-z0-9_!$%*()@./#&+-|]*$', "", obj['message']) + + # remove leading and trailing whitespaces + obj['message'] = obj['message'].strip() + + # filter bad words + obj['message'] = filter.clean(obj['message']) + + # advanced cleaning + # f u c k + test = re.sub('\s', "", obj['message']) + # fffffuuuuck + test2 = re.sub('(.)(?=.*\1)', "", obj['message']) + # f*u*c*k + test3 = re.sub('\W', "", obj['message']) + # spaces + test4 = re.sub('\s', "", obj['message']); + + if (filter.isProfane(test) or filter.isProfane(test2) or filter.isProfane(test3) or test4 == ""): + print(f"{flask.request.sid} is problematic") + else: + + # check if there is a custom function in the MOD to call at this point + if obj['room']+"TalkFilter" in MOD: + + # call it! + obj.message = MOD[obj.room + "TalkFilter"](gameState['players'][flask.request.sid], obj['message']) + + if obj['message'] is not None: + print("MOD: Warning - TalkFilter should return a message ") + obj['message'] = "" + + if obj['message']: + emit("playerTalked", { 'id': flask.request.sid, 'color': obj['color'], 'message': obj['message'], 'x': obj['x'], 'y': obj['y'] }, room=obj['room']) + + # update the last message time + # if (gameState['players'][flask.request.sid]: + gameState['players'][flask.request.sid]['lastMessage'] = mtime + gameState['players'][flask.request.sid]['lastActivity'] = mtime + + except Exception as e: + print(f"Error on talk, object malformed from {flask.request.sid}?") + print(f"Exception: {e}") + +@socketio.on('changeRoom') +def changeRoom (obj): + """ when I receive a move sent it to everybody""" + try: + roomPlayers = 1 + + # myRoom = io.sockets.adapter.rooms[obj.to]; + # if myRoom is not None: + # roomPlayers = myRoom.length + 1; + + myRoom = socketio.server.manager.rooms['/'].get(obj['to']) + if myRoom is not None: + roomPlayers = len(myRoom.keys()) + 1 + + if roomPlayers > MAX_PLAYERS_PER_ROOM and MAX_PLAYERS_PER_ROOM != -1: + # limit the number of players + print(f"ATTENTION: {obj['to']} reached maximum capacity") + # keep the player in game, send a message + emit("godMessage", "The room looks full") + else: + print(f"Player {flask.request.sid} moved from {obj['from']} to {obj['to']}") + + leave_room(obj['from']) + join_room(obj['to']) + + # broadcast the change to everybody in the current room + # from the client perspective leaving the room is the same as disconnecting + emit("playerLeft", { 'id': flask.request.sid, 'room': obj['from'], 'disconnect': False }, room=obj['from']) + + # same for joining, sending everybody in the room the player state + playerObject = gameState['players'][flask.request.sid] + playerObject['room'] = obj['to'] + playerObject['x'] = playerObject['destinationX'] = obj['x'] + playerObject['y'] = playerObject['destinationY'] = obj['y'] + playerObject['new'] = False + + # check if there is a custom function in the MOD to call at this point + if obj['from']+"Leave" in MOD: + # call it! + MOD[obj['from'] + "Leave"](playerObject, obj['from']) + + emit("playerJoined", playerObject, room=obj['to']) + + # check if there is a custom function in the MOD to call at this point + if obj['to']+"Join" in MOD: + # call it! + MOD[obj['to']+"Join"](playerObject, obj['to']) + + # check if there are NPCs in this room and make them send info to the player + for NPCId in gameState['NPCs']: + npc = gameState['NPCs'][NPCId] + if (npc.room == obj['to']): + npc.sendIntroTo(flask.request.sid) + except Exception as e: + print(f"Error on changeRoom, object malformed from {flask.request.sid}?") + print(f"Exception: {e}") + + + +# when I receive a move sent it to everybody +@socketio.on('move') +def move(obj): + try: + gameState['players'][flask.request.sid]['lastActivity'] = int(time.time()*1000) + + # broadcast the movement to everybody + # print (f"emit playerMoved to everybody in {obj['room']}") + emit("playerMoved", { 'id': flask.request.sid, 'x': obj['x'], 'y': obj['y'], 'destinationX': obj['destinationX'], 'destinationY': obj['destinationY'] }, room=obj['room']) + + except Exception as e: + print(f"Error on move, object malformed from {flask.request.sid}?") + print(f"Exception: {e}") + +# when I receive a user name validate it +@socketio.on('sendName') +def sendName(nn): + try: + res = validateName(nn) + # send the code 0 no - 1 ok - 2 admin + emit("nameValidation", res) + except Exception as e: + print(f"Error on sendName, object malformed from {flask.request.sid}?") + print(f"Exception: {e}") + +@socketio.on('emote') +def emote(obj): + """when a character emote animation changes""" + try: + emit("playerEmoted", (flask.request.sid, obj['em']), room=obj['room']) + except Exception as e: + print(f"Error on emote, object malformed from {flask.request.sid}?") + print(f"Exception: {e}") + +@socketio.on('focus') +def focus(obj): + """user afk """ + try: + # print(f"{flask.request.sid} back from AFK") + emit("playerFocused", flask.request.sid, room=obj['room']); + except Exception as e: + print(f"Error on focus, object malformed from {flask.request.sid}?") + print(f"Exception: {e}") + +@socketio.on('blur') +def blur(obj): + try: + # print(f"{flask.request.sid} is AFK") + emit("playerBlurred", flask.request.sid, room=obj['room']) + except Exception as e: + print(f"Error on blur, object malformed from {flask.request.sid}?") + print(f"Exception: {e}") + +@socketio.on('action') +def action(aId): + """ generic action listener, looks for a function with that id in the mod """ + if "on"+aId in MOD: + # call it! + # print(f"on {aId} exists in the mod, call it") + MOD["on"+aId](flask.request.sid); + +def validateName(nn): + admin = False + duplicate = False + reserved = False + + #check if the nickname is a name + password combo + combo = nn.split("|") + + #it may be + if len(combo) > 1: + n = combo[0] + p = combo[1] + for admin in admins: + if admin.upper() == nn.upper(): + #it is an admin name! check if the password is correct, case insensitive + envCombo = admin.split("|") + if (p == envCombo[1]): + admin = True + # if there is an | just strip the after + nn = n + + + #if not admin check if the nickname is reserved (case insensitive) + if not admin: + for admin in admins: + combo = admin.split("|"); + if combo[0].upper() == nn.upper(): + #it is! kill it. Yes, it should be done at login and communicated + #but hey I don't have to be nice to users who steal my name + reserved = True + + id = idByName(nn) + if (id is not None): + duplicate = True + print(f"There is already a player named {nn}") + + #i hate this double negative logic but I hate learning regex more + res = re.match(r'^([a-zA-Z0-9 !@#$%&*(),._-]+)$', nn) + + if (res is None): + return 3 + elif duplicate or reserved: + return 0 + elif admin: + print(f"{nn} logging as admin") + return 2 + else: + return 1 + + +def adminCommand(adminSocket, str): + try: + # remove / + str = str[1:] + cmd = str.split(" ") + if cmd[0] == "kick": + sid = socketIDByName(cmd[1]) + if sid: + # shadow disconnect + disconnect(sid) + else: + # popup to admin + emit("popup", f"I can't find a user named {cmd[1]}") + + elif cmd[0] == "mute": + s = idByName(cmd[1]) + if s: + gameState['players'][s]['muted'] = True + else: + # popup to admin + emit("popup", f"I can't find a user named {cmd[1]}") + + elif cmd[0] == "unmute": + s = idByName(cmd[1]); + if s: + gameState['players'][s]['muted'] = False + else: + # popup to admin + emit("popup", f"I can't find a user named {cmd[1]}") + + # trigger a direct popup + elif cmd[0] == "popup": + s = socketIDByName(cmd[1]) + if s: + msg = cmd[2:].join(" "); + emit("popup", msg, room=s) + else: + # popup to admin + emit("popup", f"I can't find a user named {cmd[1]}") + + # send fullscreen message to everybody + elif cmd[0] == "god": + msg = cmd[1:].join(" "); + emit("godMessage", msg, broadcast=True) + + # disconnect all sockets + elif cmd[0] == "nuke": + emit("errorMessage", "Server Restarted\nPlease Refresh", broadcast=True) + for sid in gameState['players']: + disconnect(sid) + + # add to the list of banned IPs + elif cmd[0] == "ban": + IP = IPByName(cmd[1]) + s = socketByName(cmd[1]) + if IP: + banned.append(IP) + if s: + s.emit("errorMessage", "You have been banned") + s.disconnect() + else: + # popup to admin + emit("popup", f"I can't find a user named {cmd[1]}") + + elif cmd[0] == "unban": + # releases the ban + banned = [] + + # forces a hard refresh - all players disconnect + # used to load a new version of the client + elif cmd[0] == "refresh": + io.sockets.emit("refresh"); + + except Exception as e: + print ("Error admin command") + print (f"Exception: {e}") + + +# admin functions, the admin exists in the client frontend so they don't have access to ip and id of other users +def socketIDByName(nick): + s = None + for sid in gameState['players']: + if gameState['players'][sid]['nickName'].upper() == nick.upper(): + s = sid + return s + +def idByName(nick): + i = None + for sid in gameState['players']: + if gameState['players'][sid]['nickName'].upper() == nick.upper(): + i = sid + return i + +def IPByName(nick): + IP = "" + for sid in gameState['players']: + if gameState['players'][sid]['nickName'].upper() == nick.upper(): + IP = gameState['players'][sid]['IP'] + return IP + +class BadWordsFilter (object): + def __init__(self, initial_data=None): + pass + def clean (self, text): + return text + def isProfane(self, text): + return False + +filter = BadWordsFilter() + + +# modding +MOD = {} +# try: +# import serverMod as MOD +# MOD.initMod(gameState, DATA) +# except ImportError: +# pass + +if __name__ == '__main__': + socketio.run(app) \ No newline at end of file