Sign in with Firebase-Admin using node.js

Question

I am trying to sign in with node.js with firebase-admin, but when I look up there API, they only have sections on update, delete and create.

They do have sections on how to get the user by email but if i want to sign in a user should I not be verifying also by their password as well. I feel like I am incorrectly reading how to use firebase-admin. My best guess is that I should be using straight Firebase and not the new firebase-admin.

Edit:

I only want to sign in the user by email (i.e. not by google sign in or facebook login), if that is possible.

You can use the client side node.js Firebase library for that: https://www.npmjs.com/package/firebase — bojeil, Mar 23 '17 at 01:41

score 16 · Accepted Answer · answered Mar 23 '17 at 02:27

16

The Firebase Admin Node.js SDK (firebase-admin on npm) is for administrative actions like fetching user data or changing a user's email without their existing password. If you just want to sign in as a user, you should use the Firebase client Node.js SDK (firebase on npm).

answered Mar 23 '17 at 02:27

jwngr

4,284
1
24
27

it turns out that I was not properly configuring `firebase` and that was my problem. – Matthew Mar 23 '17 at 03:00
1

This is probably what firebase meant for but this approach what makes firebase hard to understand (at least for me) – chenop May 01 '20 at 16:18

score 1 · Answer 2 · answered Mar 20 '19 at 18:07

Here is the answer in another post: How to authenticate an user in firebase-admin in nodejs?.

Copy and Paste, just in case:

Install firebase module: npm install firebase --save

const firebase = require("firebase");
const config = {
    apiKey: "",
    authDomain: "",
    databaseURL: "",
    projectId: "",
    storageBucket: "",
    messagingSenderId: ""
};
firebase.initializeApp(config);

exports.login = functions.https.onRequest((req, rsp)=>{
    const email = req.body.email;
    const password = req.body.password;
    const key = req.body.key;
    const _key = '_my_key_';
    let token = '';
    if(key === _key){           
    firebase.auth().signInWithEmailAndPassword(email,password).then((user)=>{
//The promise sends me a user object, now I get the token, and refresh it by sending true (obviously another promise)            
user.getIdToken(true).then((token)=>{
                rsp.writeHead(200, {"Content-Type": "application/json"});
                rsp.end(JSON.stringify({token:token}));
            }).catch((err)=>{
                rsp.writeHead(500, {"Content-Type": "application/json"});
                rsp.end(JSON.stringify({error:err}));
            });
        }).catch((err)=>{
            rsp.writeHead(500, {"Content-Type": "application/json"});
            rsp.end(JSON.stringify({error:err}));
        });
    } else {
        rsp.writeHead(500, {"Content-Type": "application/json"});
        rsp.end(JSON.stringify('error - no key'));
    }
});

`require("firebase");` is using the normal sdk, not the admin one. — joshuakcockrell, Jul 02 '23 at 07:05

score -2 · Answer 3 · answered Aug 05 '19 at 05:30

If you are still looking for sign in without using client libraries, here is the approach.

Fire a request to the following url's based on the required action

Signup : https://www.googleapis.com/identitytoolkit/v3/relyingparty/signupNewUser

Signin : https://www.googleapis.com/identitytoolkit/v3/relyingparty/verifyPassword

This allows to create/signin users by firing a http request to the above urls. You get the required tokens and these are compatible with firebase. I assume firebase internally uses these url's in the client libraries.

Hope its helpful!

Sign in with Firebase-Admin using node.js

3 Answers3

Linked