OIDC-Consumer (TS)

This module provides and OpenId Connect Consumer that takes care of managing the OAuth-flow between your servers and your IDP.

Table of Contents

• Installation
• How to use
  • Initiate
  • Consume
    • For OAuth-Flow
      • with sessions
      • without sessions
    • For Token Management
      • Refresh a Token
      • Revoke a Token

Installation

npm install @fundwave/oidc-consumer # comes prepackaged with types

How to use

1. Initiate

   Initiate an consumer-client by passing a configuration:

   const oidcConsumer = new OidcConsumer({
     scope: "openid profile email",
     callback_route: "/register",
     clientConfig: {
       client: {
         id: CLIENT_ID,
         secret: CLIENT_SECRET,
       },
       auth: {
         tokenHost: "https://example.site.com",
         tokenPath: "/auth/realms/realm-example/protocol/openid-connect/token",
         revokePath: "/auth/realms/realm-example/protocol/openid-connect/logout",
         authorizePath: "/auth/realms/realm-example/protocol/openid-connect/auth",
       },
       options: {
         authorizationMethod: "body",
       },
     },
   });

2. Consume

   1. OAuth-Flow

      1. For initiating an oauth-login flow we need to supply an entry-point on the server. You simply need to add oidcConsumer.serve method and it will handle the rest!

         router.get("/authorize", oidcConsumer.serve());

         A successful login should redirect the user back to your server with their auth-code. We don't need to worry about the exchange as the library will handle that too.

         • with sessions

           1. ensure that you pass in a configuration for managing your sessions; checkout express-session

                const oidcConsumer = new OidcConsumer({
                  ...
                  sessionOptions: {
                    name: "yodlee.oidc",
                    secret: SESSION_SECRETS,
                    resave: false,
                    saveUninitialized: true,
                    store: new FirestoreStore({
                      dataset: new Firestore({
                        kind: "express-sessions",
                      }),
                    }) as unknown as Store,
                  },
                });

           2. Add oidcConsumer.parseCallback as a middleware to the route supplied earlier @ callback_route

              router.get("/register", oidcConsumer.parseCallback(), authenticateToken, ...);

         • without sessions

           Add oidcConsumer.parseCallback as a middleware to the route supplied earlier @ callback_route

           router.get("/register", oidcConsumer.authCallback, authenticateToken, ...);

      Other middlewares and handlers can be chained in the call e.g. authenticateToken.

      Once these handler have been prefixed, you may access the updated token at request.headers.token

   2. Token Management

      1. Refresh Token

         to refresh a token, use the .refresh utility and pass-in the scope that the token needs to be refreshed to

         oidcConsumer.refresh(token);

         Note: you may also supply a scope and the token will be refreshed to that scope only, by default it refreshed to the scope that the client was initiated with

      2. Revoke Token

         to revoke a token you may use the .revoke by passing in the whole auth-token and wether access/refresh token are to be revoked

         oidcConsumer.revoke(token, "all");

   3. Miscellaneous

      You may pass in additional http payload (headers, body) for token exchange calls e.g. create, refresh, revoke by passing in those options in their respective methods (.authCallback, .refresh, .revoke) as optional last params

      we use @hapi/wreck as our underlying http library so options being passed should conform to their standards (see "options" variable under advanced usage)

Refer to the documentation for more