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server.js
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var express = require('express');
var morgan = require('morgan');
var path = require('path');
var session = require('express-session');
var articles ={
'art-one': {
title: 'Art 1'
, heading: 'Article One',
date: '12 Aug',
content: `
Content 1 Should Display Here
`
},
'art-two':{
title: 'Art 2'
, heading: 'Article Two',
date: '13 Aug',
content: `
Content 2 Should Display Here
`
},
'art-three':{
title: 'Art 3'
, heading: 'Article Three',
date: '15 Aug',
content: `
Content 3 Should Display Here
`
}
};
/*
function createtemp(data){
var title=data.title;
var head=data.heading;
var cont=data.content;
var date=data.date;
var temp=`<html>
<head>
<title>
${title}
</title>
<meta name="viewport" content="width=device-width,initial scale=1"/>
<link href="/ui/style.css" rel="stylesheet" />
</head>
<body>
<div class="container">
<div>
<a href="/">Home</a>
</div>
<hr/>
<h3>
${head}
</h3>
<div>
${date}
</div>
<div>
<p>
${cont}
</p>
<p>
The Article is here
</p>
<p>
The start is here
</p>
</div>
</div>
</body>
</html>`
return temp;
}
*/
var app = express();
var Pool = require('pg').Pool;
var crypto = require('crypto');
var bodyParser = require('body-parser');
var config = {
user: 'mastersabhinav',
database: 'mastersabhinav',
host: 'db.imad.hasura-app.io',
port: '5432',
password: process.env.DB_PASSWORD
}
app.use(morgan('combined'));
app.use(bodyParser.json());
app.use(session({
secret: 'someRandomValue',
cookie: { maxAge: 1000*60*60*24*30}
}));
app.get('/', function (req, res) {
res.sendFile(path.join(__dirname, 'ui', 'index.html'));
});
var pool= new Pool(config);
app.get('/test-db', function (req, res) {
pool.query('SELECT * from test',function(err,result){
if(err){
res.status(500).send(err.toString());
}
else{
res.send(JSON.stringify(result.rows));
}
});
});
function hash(input, salt){
var hashed = crypto.pbkdf2Sync( input, salt, 10000, 512, 'sha512');
return ["pbkdf2","10000",salt,hashed.toString('hex')].join('$');
}
app.get('/hash/:input', function(req,res){
var hashedString = hash(req.params.input, 'random-string');
res.send(hashedString);
});
app.post('/create-user', function(req,res){
var username= req.body.username;
var password= req.body.password;
var salt= crypto.randomBytes(128).toString('hex');
var dbString = hash(password, salt);
pool.query('Insert into "user" (username, password) values ($1,$2)',[username, dbString], function(err,result){
if(err){
res.status(500).send(err.toString());
}
else{
res.send('user successfully created!');
}
});
});
app.post('/login', function(req,res){
var username= req.body.username;
var password= req.body.password;
pool.query('Select * from "user" where username=$1',[username], function(err,result){
if(err){
res.status(500).send(err.toString());
}
else{
if(result.rows.length===0){
res.status(400).send('username/pw invalid');
}
else{
var dbString=result.rows[0].password;
var salt=dbString.split('$')[2];
var hashedPassword = hash(password,salt);
if(hashedPassword === dbString){
req.session.auth= {userId: result.rows[0].id};
res.send('Correct!');
}
else{
res.send('Incorrect!');
}
}
}
});
});
app.get('/check-login', function(req,res){
if(req.session && req.session.auth && req.session.auth.userId){
res.send("Logged in "+ req.session.auth.userId.toString());
}
else{
res.send("Not Logged In");
}
});
app.get('/logout', function(req,res){
delete req.session.auth;
res.send("user logged out");
});
app.get('/ui/style.css', function (req, res) {
res.sendFile(path.join(__dirname, 'ui', 'style.css'));
});
app.get('/ui/madi.png', function (req, res) {
res.sendFile(path.join(__dirname, 'ui', 'madi.png'));
});
/*
var counter=0;
app.get('/counter', function(req,res) {
counter = counter + 1;
res.send(counter.toString());
});*/
var counter=0;
app.get('/counter' ,function (req,res){
counter=counter + 1;
res.send(counter.toString());
});
var names=[];
app.get('/sub',function(req,res) {
var name=req.query.name;
names.push(name);
res.send(JSON.stringify(names));
});
/*
app.get('/:articlename', function (req, res) {
var articlename = req.params.articlename;
res.send(createtemp(articles[articlename]));
});*/
app.get('/ui/main.js', function (req, res) {
res.sendFile(path.join(__dirname, 'ui', 'main.js'));
});
// Do not change port, otherwise your app won't run on IMAD servers
// Use 8080 only for local development if you already have apache running on 80
var port = 80;
app.listen(port, function () {
console.log(`IMAD course app listening on port ${port}!`);
});