How to call jwt verification function from routes? - node.js

Question

verify_jwt_token
var jwt = require('jsonwebtoken');
var config = require('./env/config.json')
module.exports = function(req,res,next) {
var token = req.body.token || req.query.token || req.headers['x-access-token'];
if (token) {
console.log("----------------------------------------");
console.log(token);
console.log("----------------------------------------");
console.log(config.jwt_secret);
console.log("----------------------------------------");
// verifies secret and checks exp
jwt.verify(token, config.jwt_secret, function(err, decoded) {
if (err) { //failed verification.
return res.json({"error": true});
}
req.decoded = decoded;
next(); //no error, proceed
});
} else {
// forbidden without token
return res.status(403).send({
"error": true
});
}
}
Routes
var user = require('../controller/user.controller.js');
var token_verify = require('../../config/verify_jwt_token.js')
module.exports = function (app) {
app.route('/register_user').post(user.register);
app.route('/login').get(user.login);
app.route('/auth',token_verify).get(user.auth);
}
I want to call j w t verification function from this route.I don't want to call from the controller. app.route('/auth',token_verify).get(user.auth); Calling from this route
Please help.
Thank you in advance.

Answer 1

This will work-ish:
const express = require('express')
const app = express()
function jwtVerify (req, res, next) {
console.log('verifying token...')
// logic
next()
}
app
.use(jwtVerify)
.route('/example')
.get((req, res) => res.json({ hello: 'World' }))
app.listen(3000)
The issue you will run into is that the middleware will execute for every route you define because the middleware is applied to the app instance. To fix this, you need to make use of the Router. Quick dirty example below:
app.js
const express = require('express')
const app = express()
const securedRoutes = require('./secured-routes')
function jwtVerify (req, res, next) {
console.log('verifying token...')
// logic
next()
}
app.use('/secured', jwtVerify, securedRoutes)
app.listen(3000)
secured-routes.js
const express = require('express')
const router = express.Router()
router.get('/', (req, res) => res.json({ message: 'Hello from secured routes' }))
module.exports = router