oidc-client

OpenID Connect (OIDC) client server side library

Install

$ npm install oidc-client-node

Configuration Options

var oidcConfig = {
 scope: 'profile roles',
 client_id: 'implicit_client',
 callbackURL: '/auth/oidc/callback', // callback url, can be absolute or relative
 authority: 'https://localhost:50000/core'; //'--insert-your-openid-provider-domain-name-here--',
 response_type: "id_token token", 
 response_mode: "form_post",
 scopeSeparator: ' ',
 verbose_logging: true,
 httpSettings: { strictSSL = true } // optional http settings for Request
};

Local options

You can also set options on a per request basis and have those options merged in. For example:

var localOptions = {
  callbackURL: '/auth/oidc/callback', 
  acr_values: "tenant:12"
};
    
var oidcClient = new OidcClient(req, res, oidcConfig);

oidcClient.mergeRequestOptions(req, localOptions);

**Note: You are currently required to merge request options (even if they are empty), otherwise the client may not work appropriately.**

Implicit Flow Configuration Example

var oidcConfig = {
 scope: 'profile roles',
 client_id: 'implicit_client',
 callbackURL: '/auth/oidc/callback',
 authority: 'https://localhost:50000/core';
 response_type: "id_token token", 
 response_mode: "form_post",
 scopeSeparator: ' ',
 verbose_logging: true
};

Code Flow Configuration Example

var oidcConfig = {
 scope: 'profile roles offline_access', // offline is not required for code flow, but is typically used in this flow to get refresh tokens
 client_id: 'implicit_client',
 callbackURL: '/auth/oidc/callback',
 authority: 'https://localhost:50000/core';
 response_type: "code", 
 response_mode: "form_post",
 scopeSeparator: ' ',
 verbose_logging: true
};

Wiring up your routes

Wire up your routes (this example uses req.body which was based on express / body parser)

app.get('/auth/oidc/login',
  function (req, res) {
    
    var oidcClient = new OidcClient(req, res, oidcConfig);
        
    var tokenRequest = oidcClient.createTokenRequestAsync();
    
    tokenRequest.then(function (results) {
      console.log('about to redirect');
      res.redirect(results.url);  
    }).catch(function(error){
        console.log('error generating redirect url: ' + error);
    });
});

app.post(/auth/oidc/callback,
  function (req, res) {
    
    var oidcClient = new OidcClient(req, res, oidcConfig);
    
    var tokenResponse = oidcClient.processResponseAsync(req.body);
    
    tokenResponse.then(function (results) {
      console.log(results);
    }).catch(function(error) {
        console.log('error parsing token response: ' + error);
    });
    
    console.log('Made it to the end of the response function');
});

Response Example

Here's an example of all the possible data in a response. What values you get back will dependent on the flow as well as the identity provider you are integrating with.

{
  "profile": {
    "sub": "1",
    "name": "User"
  },
  "id_token": "613bfdfc867a4a838784965582aecfbb",
  "access_token": "b976452d0cb94ced8825f3297bed2628",
  "refresh_token": "62fd0a32fbc0496ab21e48835343b852",
  "expires_in": 360
}

Refreshing a token

Refreshing a token is very similar to the other scenarios, it still requires configuration of the oidc client. The main difference is that no call-back to a route occurs.

Refresh Token Configuration Example

var oidcConfig = {
 scope: 'profile roles',
 client_id: 'clientcreds_client',
 client_secret: 'your_secret',
 callbackURL: '/auth/oidc/callback',
 authority: 'https://localhost:50000/core';
 scopeSeparator: ' ',
 verbose_logging: true
};

Refresh Token Request Example

app.get('/token/refresh/', function(req, res) {
  var oidcClient = new OidcClient(req, res, oidcConfig);
  oidcClient.mergeRequestOptions(req, {});
  
  var refreshToken = getRefreshToken(); // get the current refresh token you have persisted somewhere
  
  oidcClient.refreshAccessTokenAsync(refreshToken).then(function (tokenResponse) {
    handleTokenResponse(tokenResponse); // do something with the token you received
    res.redirect('/');
  });
});

edwinf/oidc-client-node