NodeJS / Express: Get Username and Password from Request - node.js

Question

I am using NodeJS and Express, and I want to get the Username and Password parameters from a request. I've searched for a while now, and I can't find my answer.
I want to accept a user parameter from a cURL command:
curl --request --POST -u USERNAME:PASSWORD -H "Content-Type:application/json" -d "{\"key":\"value\"}" --url https://api.example.com/my_endpoint
In my application:
app.post('/my_endpoint', async (req, res, next) => {
const kwargs =. req.body;
const userName = req['?'];
const password = req['?'];
});

Answer 1

You are sending the credentials as a basic-auth header (since you're using curl's -u option). So in order to get the credentials from your request, you need to access this header and decode it. Here's one way to do this:
app.post('/my_endpoint', async (req, res, next) => {
if(req.headers.authorization) {
const base64Credentials = req.headers.authorization.split(' ')[1];
const credentials = Buffer.from(base64Credentials, 'base64').toString('utf8');
const [username, password] = credentials.split(':');
console.log(username, password);
}
});

Answer 2

How do I consume the JSON POST data in an Express application
I would do it this way
Assuming your call includes json content like this :
Remove -u USERNAME:PASSWORD
Edit -d "{ "username": "user", "password": "test" }"
curl --request --POST -H "Content-Type:application/json" -d "{ "username": "user", "password": "test" }" --url https://api.example.com/my_endpoint
Then you can access those variables with :
const userName = req.body.username;
const password = req.body.password;
Be careful, you need to use bodyParser middleware in express in order to be able to access the body variables.