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"use strict";
var cmn=require("../$common.js"),
persist=require("node-persist"),
crypto=require("crypto"),
basicAuth=require("basic-auth"),
fs=require("fs");
var moddir=null;
persist=persist.create({
dir:cmn.persistdir+"/timetrack",
continuous:false,
interval:false
});
persist.initSync();
//events: {"user": [{id: Int,sheet: String,text: String,date: Date,type: String}]}
// type: "in" / "out"
//accounts: {"user": hash (String)}
var nextid=persist.getItemSync("nextid");
if(nextid==null){
nextid=1;
persist.setItemSync("nextid",nextid);
}
var events=persist.getItemSync("events");
(function(){
if(events==null){
events={};
persist.setItemSync("events",events);
} else {
for(var user in events){
for(var ev of events[user]){
ev.date=new Date(ev.date);
if(nextid<=ev.id)nextid=ev.id+1;
}
}
persist.setItemSync("nextid",nextid);
}
})();
var accounts=persist.getItemSync("accounts");
if(accounts==null){
accounts={};
persist.setItemSync("accounts",accounts);
}
var naccounts=0;
(function(){
var user;
for(user in accounts)naccounts++;
})();
function scryptHash(password,cb){
crypto.randomBytes(16,function(err,salt){
if(err){
cb(err,null);
return;
}
crypto.scrypt(password,salt,32,function(err,key){
if(err)cb(err,null);
else cb(null,salt.toString("hex")+"$"+key.toString("hex"));
});
});
}
function scryptCompare(password,hash,cb){
hash=hash.split("$");
if(hash.length!=2){
cb(new Error("Invalid hash in database"),null);
return;
}
var salt=Buffer.from(hash[0],"hex"),shash=hash[1];
crypto.scrypt(password,salt,32,function(err,key){
if(err)cb(err,null);
else if(key.toString("hex")==shash)cb(null,true);
else cb(null,false);
});
}
function sendUnauth(res){
res.set("WWW-Authenticate","Basic realm=Authorization required");
return res.sendStatus(401);
}
function unknownUserHandler(req,res,next){
res.sendFile(moddir+"/unknownuser.html");
}
function authMiddleware(req,res,next){
var user=basicAuth(req);
req.authuser=null;
if(!user||!user.name){
sendUnauth(res);
return;
}
req.authuser=user.name;
if(accounts[req.authuser]){
scryptCompare(user.pass,accounts[req.authuser],function(err,ok){
if(ok)next();
else sendUnauth(res);
});
} else {
unknownUserHandler(req,res,next);
}
}
function asciiValid(str){
var i,c;
for(i=0;i<str.length;i++){
c=str.charCodeAt(i);
if(c<32||c>=127)return false;
}
return true;
}
module.exports=function(app,io,_moddir){
moddir=_moddir;
//first the endpoints that need to bypass authMiddleware
app.get("/timetrack/authfail",function(req,res){
sendUnauth(res);
});
app.post("/timetrack/createuser",function(req,res){
var user=basicAuth(req);
if(!user||!user.name){
res.status(400).send("No credentials sent");
return;
}
if(user.name.length<3||user.name.length>32||!asciiValid(user.name)){
res.status(400).send("Invalid username");
return;
}
if(user.pass.length<3||user.pass.length>32||!asciiValid(user.pass)){
res.status(400).send("Invalid password");
return;
}
if(accounts[user.name]){
res.status(400).send("User already exists");
return;
}
if(naccounts>=20){
res.status(500).send("Too many accounts created, please contact Tom...");
return;
}
scryptHash(user.pass,function(err,hash){
if(!hash){
res.status(500).send("Something went wrong...");
console.log(err);
return;
}
accounts[user.name]=hash;
events[user.name]=[];
naccounts++;
persist.setItemSync("accounts",accounts);
persist.setItemSync("events",events);
res.status(200).end();
});
});
app.all(["/timetrack","/timetrack/*"],authMiddleware); //for all the other endpoints
app.get("/timetrack",function(req,res){
res.sendFile(moddir+"/timetrack.html");
});
app.get("/timetrack/list",function(req,res){
res.json(events[req.authuser]);
});
app.get("/timetrack/sheets",function(req,res){
var seen=new Map();
var list=[];
for (var i=0;i<events[req.authuser].length;i++){
if (!seen.has(events[req.authuser][i].sheet)) {
seen.set(events[req.authuser][i].sheet, 0);
list.push(events[req.authuser][i].sheet);
}
}
res.json(list);
});
app.delete("/timetrack/event",function(req,res){
var id=+req.body;
var i;
var fail=false;
var userevents=events[req.authuser];
if(id<0||~~id!=id||isNaN(id)||!userevents){
fail=true;
} else {
for(i=0;i<userevents.length;i++)if(userevents[i].id==id)break;
if(i==userevents.length)fail=true;
else {
userevents.splice(i,1);
persist.setItemSync("events",events);
}
}
if(fail)res.status(404).send("Unknown id");
else res.status(200).end();
});
app.post("/timetrack/event",function(req,res){
var obj;
try {
obj=JSON.parse(req.body);
} catch(e){
res.status(400).send("Invalid request");
return;
}
var sheet=obj.sheet+"",text=obj.text+"",date=new Date(obj.date),type=obj.type+"";
if(sheet.length==0||isNaN(date.getTime())||(type!="in"&&type!="out")){
res.status(400).send("Invalid data");
return;
}
if(events[req.authuser].length>=4000){
res.status(400).send("Isn't 4000 events enough for you?");
return;
}
events[req.authuser].push({
id:nextid++,
sheet:sheet,
text:text,
date:date,
type:type
});
events[req.authuser].sort(function(a, b) { return a.date - b.date; });
persist.setItemSync("events",events);
persist.setItemSync("nextid",nextid);
res.status(200).end();
});
};
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