Authentication using Okta API in Node.js
I am currently working on a project which involves implementing authentication using API’s of various identity providers. This is a code example of authentication using Okta in Node.js.
- I am using the path
/login/okta
with POST method. - You can refer to the Okta documentation to login using authentication API here: Okta Authentication API
- For the request body, we need a username and password.
OKTA_APP_URI
is the url of our Okta application.- After authentication via Okta, I am using the profile information in the body of the response and expiry date returned via Okta to create a JWT token.
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router.post('/login/okta', async function(req, res, next) {
const username = req.body.username;
const password = req.body.password;
if (!username || !password) {
res.status(400).json({
message: 'name or password missing - both must be supplied for login'
});
} else {
request.post(OKTA_APP_URI, {
json: {
username: username,
password: password,
options: {
multiOptionalFactorEnroll: true,
warnBeforePasswordExpired: true
}
}
}, (error, resp, body) => {
if (error) {
console.error(error);
} else {
if (resp.statusCode === 401) {
res.status(401).json({
message: 'Invalid password or user name'
});
} else if (resp.statusCode === 200) {
let userProfile = body['_embedded']['user']['profile'];
let expiry = Date.parse(body['expiresAt']);
let payload = {
iss: "org_name", //can assign from env var
sub: "auth.api", //can assign from env var
jti: uuid4(),
exp: expiry,
claims: {
firstName: userProfile.firstName,
lastName: userProfile.lastName,
username: userProfile.login
}
};
let token = jwt.sign(payload, jwtOptions.secretOrKey, {
algorithm: jwtOptions.algorithm
});
res.status(200).json({
message: 'Login was successful',
"token": token
});
} else {
res.json({
message: 'Please refer to Okta error codes and description:\\' +
'\"https://developer.okta.com/docs/reference/error-codes/#example-errors-listed-by-http-return-code\\"'
})
}
}
});
}
});
Hope this helps someone. If you have any questions, feel free to comment below!