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#!/usr/bin/env node
var fs=require("fs"),
http=require("http"),
util=require("util"),
WebSocketServer=require("ws").Server,
CircularBuffer=require("circular-buffer"),
Persist=require("node-persist"),
Naampje=require("naampje").name;
var HTTPPORT=81,WSPORT=8000;
var nickdeleteregex=/[\x00-\x20\x7F\x80-\xFF]/g;
////////// WEBSOCKETS //////////
function uniqid(){
if(!uniqid.$)uniqid.$=1;
return uniqid.$++;
}
function lobby_create(lname){
lobbies.push({id:uniqid(),name:lname,users:[],history:new CircularBuffer(40)});
}
var __do_persist_lobbies_timeout=null;
function do_persist_lobbies(){
if(__do_persist_lobbies_timeout)return;
__do_persist_lobbies_timeout=setTimeout(function(){
__do_persist_lobbies_timeout=null;
Persist.setItem("lobbies",lobbies,function(err,res){
if(err)console.log("persist lobbies error: "+err);
else console.log("persist lobbies: "+res);
});
},10*1000);
}
var users=[],lobbies;
Persist.initSync({});
lobbies=Persist.getItemSync("lobbies");
if(!lobbies){
lobbies=[];
["lobby_1","lobby_2"].forEach(lobby_create);
} else {
lobbies.forEach(function(l){
l.users=[];
l.history=new CircularBuffer(l.history);
});
}
new WebSocketServer({port:WSPORT}).on("connection",function(ws){
var uobj;
(function(){
//var nick="_user"+uniqid();
var nick=Naampje(),suffix="";
if(fnick(nick)!=-1)for(suffix=1;fnick(nick+suffix)!=-1;suffix++);
uobj=new UserObject((nick+suffix).replace(nickdeleteregex,""),ws);
})();
users.push(uobj);
ws.send("#yournick "+uobj.nick);
ws.on("message",function(msg,flags){
console.log("("+uobj.id+","+uobj.nick+"): "+msg);
if(msg.match(/^#lobby /)){
var which=parseInt(msg.slice(7),10),lobidx=flob(which),oldlobidx;
if(lobidx==-1){
ws.send("#error Invalid lobby");
return;
}
ws.send("#lobby "+which);
if(uobj.lob!=null)leave_lobby(uobj);
join_lobby(lobidx,uobj);
send_history(lobidx,uobj);
do_persist_lobbies();
} else if(msg.match(/^#mylobby/)){
if(uobj.lob==null)ws.send("#mylobby");
else ws.send("#mylobby "+uobj.lob);
} else if(msg.match(/^#nick /)){
var choice=msg.slice(6).replace(nickdeleteregex,""); //all shitty characters including space (' ')
var i;
if(choice.length==0||choice.length>8){
ws.send("#error Invalid nick");
return;
}
if(uobj.lob!=null){
if(fnick(choice)!=-1){
i=1;
while(fnick(choice+i)!=-1)i++;
choice+=i;
}
lobbysend(lobbies[flob(uobj.lob)],"#nick "+uobj.nick+" "+choice,[uobj.id]);
}
uobj.nick=choice;
ws.send("#yournick "+uobj.nick);
do_persist_lobbies();
} else if(msg.match(/^#lobbylist/)){
ws.send("#lobbylist "+lobbies.map(function(lob){return lob.id+":"+lob.name;}).join(" "));
} else if(msg.match(/^#nicklist/)){
if(this.lob==null){
ws.send("#error Cannot request nicklist while not in a lobby");
return;
}
ws.send("#nicklist "+lobbies[flob(uobj.lob)].users.map(function(usr){
return users[fuser(usr)].nick;
}).join(" "));
} else if(msg[0]==">"){ //message!
var lobidx;
if(uobj.lob==null){
ws.send("#error Cannot send message while not in a lobby");
return;
}
lobidx=flob(uobj.lob);
lobbysend(lobbies[lobidx],"<"+uobj.nick+" "+msg.slice(1));
lobbies[lobidx].history.push([">",uobj.nick,msg.slice(1)]);
do_persist_lobbies();
} else {
ws.send("#error Invalid message starting with \""+msg.slice(0,10)+"\"");
return;
}
});
ws.on("close",function(){
var lobidx;
if(uobj.lob!=null){
lobidx=flob(uobj.lob);
lobbysend(lobbies[lobidx],"#part "+uobj.nick,[uobj.id]);
lobbies[lobidx].history.push(["part",uobj.nick]);
lobbies[lobidx].users.splice(lobfuser(lobbies[lobidx],uobj.id),1);
}
users.splice(fuser(uobj.id),1);
do_persist_lobbies();
});
});
console.log("Websocket server started on port "+WSPORT+".");
function UserObject(nick,ws){
if(!(this instanceof UserObject))return new UserObject(nick,ws);
this.id=uniqid();
this.nick=nick;
this.ws=ws;
this.lob=null;
}
function lobbysend(lob,msg,exceptids){
var uidx;
if(exceptids==undefined)exceptids=[];
for(var i=0;i<lob.users.length;i++){
if(exceptids.indexOf(lob.users[i])==-1){
uidx=fuser(lob.users[i]);
users[uidx].ws.send(msg);
}
}
}
function lobfuser(lob,id){
for(var i=0;i<lob.users.length;i++)if(users[fuser(lob.users[i])].id==id)return i;
return -1;
}
function fuser(id){
for(var i=0;i<users.length;i++)if(users[i].id==id)return i;
return -1;
}
function fnick(nick){
for(var i=0;i<users.length;i++)if(users[i].nick==nick)return i;
return -1;
}
function flob(lobid){
for(var i=0;i<lobbies.length;i++)if(lobbies[i].id==lobid)return i;
return -1;
}
function join_lobby(lobidx,uobj){
var lobid=lobbies[lobidx].id;
uobj.lob=lobid;
lobbies[lobidx].users.push(uobj.id);
lobbysend(lobbies[lobidx],"#join "+uobj.nick);
lobbies[lobidx].history.push(["join",uobj.nick]);
}
function send_history(lobidx,uobj){
uobj.ws.send("#historystart");
lobbies[lobidx].history.toarray().forEach(function(h){
uobj.ws.send("#history "+h.join(" "));
});
uobj.ws.send("#historyend");
}
function leave_lobby(uobj){
var lobidx=flob(uobj.lob);
lobbies[lobidx].users.splice(lobfuser(lobbies[lobidx],uobj.id),1);
lobbysend(lobbies[lobidx],"#part "+uobj.nick);
lobbies[lobidx].history.push(["part",uobj.nick]);
}
////////// HTTP //////////
var pagehtml;
try{
pagehtml=fs.readFileSync("chatserver.html").toString();
} catch(e){
console.log("Could not read file 'chatserver.html'.");
console.log(e);
process.exit();
}
http.createServer(function(req,res){
if(req.url=="/"){
res.writeHead(200,{"Content-Type":"text/html"});
res.end(pagehtml);
} else {
var url=req.url.slice(1); //strip off the initial '/'
if(url.indexOf("?")!=-1)url=url.slice(0,url.indexOf("?")); //strip off parameters
if(!/^theme-[a-z0-9]+\.css$/i.test(url))res.end("not permitted");
try{res.end(fs.readFileSync(url).toString());}
catch(e){res.end("error");}
}
}).listen(HTTPPORT);
console.log("HTTP server started on port "+HTTPPORT+".");
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