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server.js
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server.js
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/**
* Redux-Cluster-WS
* (c) 2018 by Siarhei Dudko.
*
* Websocket (socket.io) Server wrapper for redux-cluster
* LICENSE MIT
*/
"use strict"
var Http = require('http'),
Https = require('https'),
SocketIO = require('socket.io'),
Fs = require('fs'),
Crypto = require('crypto'),
ReduxCluster = require('redux-cluster');
function ReduxClusterWsWrapper(store){
let self = this;
self.store = store; //постоянная ссылка на магазин
self.uid = ReduxCluster.functions.generateUID();
self.ip2ban = {}; //база данных блокнутых ip
self.ip2banAttemp = 15; //количество попыток ввода пароля
self.ip2banTimeout = 10800000; //время блокировки в мс, при срабатывании лимита попыток
self.database = {}; //база данных авторизации
self.sockets = {}; //авторизованные сокеты
self.timeout = 30000;
self.config = {host: '0.0.0.0', port: 10002}; //дефолтные настройки сервера
if((store instanceof ReduxCluster.createStore)) { //проверяю переданный объект
throw new Error('Argument requires redux-cluster store!');
}
store.createWSServer = function(config){
self.ip2banGCStart = setInterval(function(){
for(const key in self.ip2ban){
if((self.ip2ban[key].time+self.ip2banTimeout) < Date.now()){
delete self.ip2ban[key];
}
}
}, 60000);
self.ip2banGCStop = function(){ clearInterval(self.ip2banGCStart); }
self.sendtoall = function(_message){
if(self.io instanceof SocketIO){
if(typeof(_message) === 'object'){
for(const uid in self.sockets){
try{
if(self.sockets[uid] && (typeof(self.sockets[uid].emit) === 'function'))
self.sockets[uid].emit("RCMSG", _message);
} catch(err){
self.store.stderr('ReduxCluster.createWSServer write error: '+err.message);
}
}
} else {
for(const uid in self.sockets){
try{
if(self.sockets[uid] && (typeof(self.sockets[uid].emit) === 'function'))
self.sockets[uid].emit("RCMSG", {_msg:"REDUX_CLUSTER_MSGTOWORKER", _hash:self.store.RCHash, _action:{type:"REDUX_CLUSTER_SYNC", payload:self.store.getState()}});
} catch(err){
self.store.stderr('ReduxCluster.createWSServer write error: '+err.message);
}
}
}
}
}
self.unsubscribe = self.store.subscribe(function(){ //подписываю сокет на изменения Redux только в режиме snapshot
if(self.store.mode === "snapshot")
self.sendtoall();
});
self.store.allsock[self.uid] = self;
if(self.store.role.indexOf("server") === -1) { self.store.role.push("server"); }
if(typeof(config) === 'object'){
self.config = Object.assign(config);
}
if(typeof(self.config.logins) === 'object')
for(const login in self.config.logins){ self.database[ReduxCluster.functions.hasher("REDUX_CLUSTER"+login)] = ReduxCluster.functions.hasher("REDUX_CLUSTER"+self.config.logins[login]); }
if(typeof(self.config.server) === 'undefined'){
if(self.config.ssl && self.config.ssl.crt && self.config.ssl.ca && self.config.ssl.key){ //формирую сертификат сервера
self.ssl = {
key: ''+Fs.readFileSync(self.config.ssl.key),
cert: Fs.readFileSync(self.config.ssl.crt) + '\n' + Fs.readFileSync(self.config.ssl.ca)
};
}
if(self.ssl){
self.server = new Https.createServer(ssl, undefined).setTimeout(self.timeout).listen(self.config.port, self.config.host);
self.io = new SocketIO(self.server, { log: true ,pingTimeout: 7200000, pingInterval: 25000, secure:true, transports: ['websocket'], path: "/redux-cluster-"+self.store.RCHash});
} else{
self.server = new Http.createServer(undefined).setTimeout(self.timeout).listen(self.config.port, self.config.host);
self.io = new SocketIO(self.server, { log: true ,pingTimeout: 7200000, pingInterval: 25000, transports: ['websocket'], path: "/redux-cluster-"+self.store.RCHash});
}
} else if (self.config.server instanceof Http.Server){
self.server = self.config.server;
self.io = new SocketIO(self.server, { log: true ,pingTimeout: 7200000, pingInterval: 25000, transports: ['websocket'], path: "/redux-cluster-"+self.store.RCHash});
} else if (self.config.server instanceof Https.Server){
self.server = self.config.server;
self.io = new SocketIO(self.server, { log: true ,pingTimeout: 7200000, pingInterval: 25000, secure:true, transports: ['websocket'], path: "/redux-cluster-"+self.store.RCHash});
} else {
throw new Error('Server instanse is not supported library! Please use http/https native library.');
}
self.io.engine.generateId = ReduxCluster.functions.generateUID;
self.io.sockets.on('connection', function (socket) {
try{
let thisSocketAddressArr = self.io.sockets.sockets[socket.id].handshake.address.split(':');
let _i2bTest = ReduxCluster.functions.replacer(thisSocketAddressArr[thisSocketAddressArr.length-1], true);
if((typeof(_i2bTest) === 'undefined') || (typeof(self.ip2ban[_i2bTest]) === 'undefined') || ((typeof(self.ip2ban[_i2bTest]) === 'object') && ((self.ip2ban[_i2bTest].count < self.ip2banAttemp) || ((self.ip2ban[_i2bTest].time+self.ip2banTimeout) < Date.now())))){
socket.on('RCMSG', function(data){
if(data._hash === self.store.RCHash){ //проверяю что сообщение привязано к текущему хранилищу
switch(data._msg){
case 'REDUX_CLUSTER_MSGTOMASTER': //получаю диспатчер от клиента
if((typeof(socket.id) !== 'undefined') && (typeof(self.sockets[socket.id]) !== 'undefined')){
if(data._action.type === 'REDUX_CLUSTER_SYNC')
throw new Error("Please don't use REDUX_CLUSTER_SYNC action type!");
self.store.dispatch(data._action);
}
break;
case 'REDUX_CLUSTER_START': //получаю метку, что клиент запущен
if((typeof(socket.id) !== 'undefined') && (typeof(self.sockets[socket.id]) !== 'undefined')){
self.sockets[socket.id].emit('RCMSG', {_msg:"REDUX_CLUSTER_MSGTOWORKER", _hash:self.store.RCHash, _action:{type:"REDUX_CLUSTER_SYNC", payload:self.store.getState()}});
}
break;
case 'REDUX_CLUSTER_SOCKET_AUTH':
if( (typeof(data._login) !== 'undefined') &&
(typeof(data._password) !== 'undefined') &&
(typeof(self.database[data._login]) !== 'undefined') &&
(self.database[data._login] === data._password)){
self.sockets[socket.id] = socket;
if((typeof(_i2bTest) === 'string') && (typeof(self.ip2ban[_i2bTest]) === 'object')) { delete self.ip2ban[_i2bTest]; } //если логин присутствует в таблице забаненных удаляю
self.sockets[socket.id].emit('RCMSG', {_msg:"REDUX_CLUSTER_SOCKET_AUTHSTATE", _hash:self.store.RCHash, _value:true});
} else {
if(typeof(_i2bTest) === 'string') {
let _tempCount = 0;
if(typeof(self.ip2ban[_i2bTest]) === 'object'){
_tempCount = self.ip2ban[_i2bTest].count;
if(_tempCount >= self.ip2banAttemp) { _tempCount = 0; } //по таймауту сбрасываю счетчик попыток
}
self.ip2ban[_i2bTest] = {time: Date.now(), count:_tempCount+1};
}
socket.emit('RCMSG', {_msg:"REDUX_CLUSTER_SOCKET_AUTHSTATE", _hash:self.store.RCHash, _value:false});
if(typeof(socket.disconnect) === 'function'){
socket.disconnect();
}
if((typeof(socket.id) !== 'undefined') && (typeof(self.sockets[socket.id]) !== 'undefined')){
delete self.sockets[socket.id];
}
}
break;
}
}
});
} else {
socket.emit('RCMSG', {_msg:"REDUX_CLUSTER_SOCKET_AUTHSTATE", _hash:self.store.RCHash, _value:false, _banned: true});
if(typeof(socket.disconnect) === 'function'){
socket.disconnect();
}
if((typeof(socket.id) !== 'undefined') && (typeof(self.sockets[socket.id]) !== 'undefined')){
delete self.sockets[socket.id];
}
}
} catch(err){
self.store.stderr('ReduxCluster.createWSServer socket error: '+err.message);
if(typeof(socket.disconnect) === 'function'){
socket.disconnect();
}
}
socket.on('error', function(err){
self.store.stderr('ReduxCluster.createWSServer read error: '+err.message);
});
});
}
};
module.exports = function(store){
new ReduxClusterWsWrapper(store);
return store;
};