react-oidc-context

react-oidc-context

Lightweight auth library using the oidc-client-ts library for React single page applications (SPA). Support for hooks and higher-order components (HOC).

Table of Contents

• Documentation
• Installation
• Getting Started
• Contributing
• Influences
• License

Documentation

This library implements an auth context provider by making use of the oidc-client-ts library. Its configuration is tight coupled to that library.

• oidc-client-ts

The User and UserManager is hold in this context, which is accessible from the React application. Additionally it intercepts the auth redirects by looking at the query/fragment parameters and acts accordingly. You still need to setup a redirect uri, which must point to your application, but you do not need to create that route.

To renew the access token, the automatic silent renew feature of oidc-client-ts can be used.

Installation

Using npm

npm install oidc-client-ts react-oidc-context --save

Using yarn

yarn add oidc-client-ts react-oidc-context

Getting Started

Configure the library by wrapping your application in AuthProvider:

// src/index.jsx
import React from "react";
import ReactDOM from "react-dom";
import { AuthProvider } from "react-oidc-context";
import App from "./App";

const oidcConfig = {
  authority: "<your authority>",
  client_id: "<your client id>",
  redirect_uri: "<your redirect uri>",
  // ...
};

ReactDOM.render(
  <AuthProvider {...oidcConfig}>
    <App />
  </AuthProvider>,
  document.getElementById("app")
);

Use the useAuth hook in your components to access authentication state (isLoading, isAuthenticated and user) and authentication methods (signinRedirect, removeUser and signOutRedirect):

// src/App.jsx
import React from "react";
import { useAuth } from "react-oidc-context";

function App() {
    const auth = useAuth();

    switch (auth.activeNavigator) {
        case "signinSilent":
            return <div>Signing you in...</div>;
        case "signoutRedirect":
            return <div>Signing you out...</div>;
    }

    if (auth.isLoading) {
        return <div>Loading...</div>;
    }

    if (auth.error) {
        return <div>Oops... {auth.error.message}</div>;
    }

    if (auth.isAuthenticated) {
        return (
        <div>
            Hello {auth.user?.profile.sub}{" "}
            <button onClick={() => void auth.removeUser()}>Log out</button>
        </div>
        );
    }

    return <button onClick={() => void auth.signinRedirect()}>Log in</button>;
}

export default App;

You must provide an implementation of onSigninCallback to oidcConfig to remove the payload from the URL upon successful login. Otherwise if you refresh the page and the payload is still there, signinSilent - which handles renewing your token - won't work.

A working implementation is already in the code here.

Use with a Class Component

Use the withAuth higher-order component to add the auth property to class components:

// src/Profile.jsx
import React from "react";
import { withAuth } from "react-oidc-context";

class Profile extends React.Component {
    render() {
        // `this.props.auth` has all the same properties as the `useAuth` hook
        const auth = this.props.auth;
        return <div>Hello {auth.user?.profile.sub}</div>;
    }
}

export default withAuth(Profile);

Call a protected API

As a child of AuthProvider with a user containing an access token:

// src/Posts.jsx
import React from "react";
import { useAuth } from "react-oidc-context";

const Posts = () => {
    const auth = useAuth();
    const [posts, setPosts] = React.useState(Array);

    React.useEffect(() => {
        (async () => {
            try {
                const token = auth.user?.access_token;
                const response = await fetch("https://api.example.com/posts", {
                    headers: {
                        Authorization: `Bearer ${token}`,
                    },
                });
                setPosts(await response.json());
            } catch (e) {
                console.error(e);
            }
        })();
    }, [auth]);

    if (!posts.length) {
        return <div>Loading...</div>;
    }

    return (
        <ul>
        {posts.map((post, index) => {
            return <li key={index}>{post}</li>;
        })}
        </ul>
    );
};

export default Posts;

As not a child of AuthProvider (e.g. redux slice) when using local storage (WebStorageStateStore) for the user containing an access token:

// src/slice.js
import { User } from "oidc-client-ts"

function getUser() {
    const oidcStorage = localStorage.getItem(`oidc.user:<your authority>:<your client id>`)
    if (!oidcStorage) {
        return null;
    }

    return User.fromStorageString(oidcStorage);
}

export const getPosts = createAsyncThunk(
    "store/getPosts",
    async () => {
        const user = getUser();
        const token = user?.access_token;
        return fetch("https://api.example.com/posts", {
            headers: {
                Authorization: `Bearer ${token}`,
            },
        });
    },
    // ...
)

Protect a route

Secure a route component by using the withAuthenticationRequired higher-order component. If a user attempts to access this route without authentication, they will be redirected to the login page.

import React from 'react';
import { withAuthenticationRequired } from "react-oidc-context";

const PrivateRoute = () => (<div>Private</div>);

export default withAuthenticationRequired(PrivateRoute, {
  onRedirecting: () => (<div>Redirecting to the login page...</div>)
});

Adding event listeners

The underlying UserManagerEvents instance can be imperatively managed with the useAuth hook.

// src/App.jsx
import React from "react";
import { useAuth } from "react-oidc-context";

function App() {
    const auth = useAuth();

    React.useEffect(() => {
        // the `return` is important - addAccessTokenExpiring() returns a cleanup function
        return auth.events.addAccessTokenExpiring(() => {
            if (alert("You're about to be signed out due to inactivity. Press continue to stay signed in.")) {
                auth.signinSilent();
            }
        })
    }, [auth.events, auth.signinSilent]);

    return <button onClick={() => void auth.signinRedirect()}>Log in</button>;
}

export default App;

Automatic sign-in

Automatically sign-in and silently reestablish your previous session, if you close the tab and reopen the application.

// index.jsx
const oidcConfig: AuthProviderProps = {
    ...
    userStore: new WebStorageStateStore({ store: window.localStorage }),
};

// src/App.jsx
import React from "react";
import { useAuth, hasAuthParams } from "react-oidc-context";

function App() {
    const auth = useAuth();
    const [hasTriedSignin, setHasTriedSignin] = React.useState(false);

    // automatically sign-in
    React.useEffect(() => {
        if (!hasAuthParams() &&
            !auth.isAuthenticated && !auth.activeNavigator && !auth.isLoading &&
            !hasTriedSignin
        ) {
            auth.signinRedirect();
            setHasTriedSignin(true);
        }
    }, [auth, hasTriedSignin]);

    if (auth.isLoading) {
        return <div>Signing you in/out...</div>;
    }

    if (!auth.isAuthenticated) {
        return <div>Unable to log in</div>;
    }

    return <button onClick={() => void auth.removeUser()}>Log out</button>;
}

export default App;

Contributing

We appreciate feedback and contribution to this repo!

Influences

This library is inspired by oidc-react, which lacks error handling and auth0-react, which is focused on auth0.

License

This project is licensed under the MIT license. See the LICENSE file for more info.