okta-react

Okta React SDK

Okta React SDK makes it easy to integrate react-router with Okta's OpenID Connect API.

This library currently supports:

• OAuth 2.0 Implicit Flow

Prerequisites

• If you do not already have a Developer Edition Account, you can create one at https://developer.okta.com/signup/.
• If you don't have a React app, or are new to React, please continue with the React Quickstart guide. It will walk you through the creation of a React app, creating routes, and other application development essentials.

Add an OpenID Connect Client in Okta

In Okta, applications are OpenID Connect clients that can use Okta Authorization servers to authenticate users. Your Okta Org already has a default authorization server, so you just need to create an OIDC client that will use it.

• Log into the Okta Developer Dashboard, click Applications then Add Application.
• Choose Single Page App (SPA) as the platform, then submit the form the default values, which should look like this:

Setting	Value
App Name	My SPA App
Base URIs	http://localhost:{port}
Login redirect URIs	http://localhost:{port}/implicit/callback
Grant Types Allowed	Implicit

After you have created the application there are two more values you will need to gather:

Setting	Where to Find
Client ID	In the applications list, or on the "General" tab of a specific application.
Org URL	On the home screen of the developer dashboard, in the upper right.

These values will be used in your React application to setup the OpenID Connect flow with Okta.

Installation

This library is available through npm. To install it, simply add it to your project:

# npm
npm install --save @okta/okta-react

# yarn
yarn add @okta/okta-react

Usage

okta-react works directly with react-router and provides four additional components:

• Security - (required) Allows you to supply your OpenID Connect client configuration.
• SecureRoute - (required) A normal Route except authentication is needed to render the component.
• ImplicitCallback - (required) Handles the implicit flow callback. This will parse the tokens and store them automatically.

Create Routes

Here are the minimum requirements for a working example:

• / - Anyone can access the home page
• /protected - Protected is only visible to authenticated users
• /implicit/callback - This is where auth is handled for you after redirection

// src/App.js

import React, { Component } from 'react';
import { BrowserRouter as Router, Route } from 'react-router-dom';
import { Security, SecureRoute, ImplicitCallback } from '@okta/okta-react';
import Home from './Home';
import Protected from './Protected';

class App extends Component {
  render() {
    return (
      <Router>
        <Security issuer='https://{yourOktaDomain}.com/oauth2/default'
                  client_id='{clientId}'
                  redirect_uri={window.location.origin + '/implicit/callback'} >
          <Route path='/' exact={true} component={Home}/>
          <SecureRoute path='/protected' component={Protected}/>
          <Route path='/implicit/callback' component={ImplicitCallback} />
        </Security>
      </Router>
    );
  }
}

export default App;

Show Login and Logout Buttons

In the relevant location in your application, you will want to provide Login and Logout buttons for the user. You can show/hide the correct button by using the auth.isAuthenticated() method. For example:

// src/Home.js

import React, { Component } from 'react';
import { withAuth } from '@okta/okta-react';

export default withAuth(class Home extends Component {
  constructor(props) {
    super(props);
    this.state = { authenticated: null };
    this.checkAuthentication = this.checkAuthentication.bind(this);
    this.login = this.login.bind(this);
    this.logout = this.logout.bind(this);
  }

  async checkAuthentication() {
    const authenticated = await this.props.auth.isAuthenticated();
    if (authenticated !== this.state.authenticated) {
      this.setState({ authenticated });
    }
  }

  async login() {
    this.props.auth.login('/');
  }

  async logout() {
    this.props.auth.logout('/');
  }

  async componentDidMount() {
    this.checkAuthentication();
  }

  async componentDidUpdate() {
    this.checkAuthentication();
  }

  render() {
    if (this.state.authenticated === null) return null;
    return this.state.authenticated ?
      <button onClick={this.logout}>Logout</button> :
      <button onClick={this.login}>Login</button>;
  }
});

Use the Access Token

When your users are authenticated, your React application has an access token that was issued by your Okta Authorization server. You can use this token to authenticate requests for resources on your server or API. As a hypothetical example, let's say you have an API that provides messages for a user. You could create a MessageList component that gets the access token and uses it to make an authenticated request to your server.

Here is what the React component could look like for this hypothetical example:

import fetch from 'isomorphic-fetch';
import React, { Component } from 'react';
import { withAuth } from '@okta/okta-react';

export default withAuth(class MessageList extends Component {
  constructor(props) {
    super(props)
    this.state = {
      messages: null
    }
  }

  async componentDidMount() {
    try {
      const response = await fetch('http://localhost:{serverPort}/api/messages', {
        headers: {
          Authorization: 'Bearer ' + await this.props.auth.getAccessToken()
        }
      });
      const data = await response.json();
      this.setState({ messages: data.messages });
    } catch (err) {
      // handle error as needed
    }
  }

  render() {
    if (!this.state.messages) return <div>Loading..</div>;
    const items = this.state.messages.map(message =>
      <li key={message}>{message}</li>
    );
    return <ul>{items}</ul>;
  }
});

Reference

Security

Security is the top-most component of okta-react. This is where most of the configuration is provided.

Configuration options

• issuer (required) - The OpenId Connect issuer

• client_id (required) - The OpenId Connect client_id

• redirect_uri (required) - Where the callback handler is hosted

• scope (optional): Reserved or custom claims to be returned in the tokens

• response_type (optional): Desired token grant types

• onAuthRequired (optional)

• auth (optional) - Provide an Auth object instead of the options above. This is helpful when integrating okta-react with external libraries that need access to the tokens.

  Accepts a callback to make a decision when authentication is required. If this is not supplied, okta-react redirects to Okta. This callback will receive auth and history parameters. This is triggered when:

  1. auth.login is called
  2. SecureRoute is accessed without authentication

• storage (optional): Specify the type of storage for tokens. The types are:

  • localStorage
  • sessionStorage
  • cookie

  Defaults to localStorage. If local storage is not available, falls back to sessionStorage or cookie.

• auto_renew (optional): By default, the library will attempt to renew expired tokens. When an expired token is requested by the library, a renewal request is executed to update the token. If you wish to to disable auto renewal of tokens, set auto_renew to false.

Example

function customAuthHandler({auth, history}) {
  // Redirect to the /login page that has a CustomLoginComponent
  history.push('/login');
}

class App extends Component {
  render() {
    return (
      <Router>
        <Security issuer='https://{yourOktaDomain}.com/oauth2/default'
                  client_id='{clientId}'
                  redirect_uri={window.location.origin + '/implicit/callback'}
                  onAuthRequired={customAuthHandler} >
          <Router path='/login' component={CustomLoginComponent}>
          {/* some routes here */}
        </Security>
      </Router>
    );
  }
}

Example with Auth object

// src/App.js

import React, { Component } from 'react';
import { Router, Route } from 'react-router-dom';
import { Security, SecureRoute, ImplicitCallback, Auth } from '@okta/okta-react';
import Home from './Home';
import Protected from './Protected';
import { createBrowserHistory } from 'history'

const history = createBrowserHistory();

const auth = new Auth({
  history,
  issuer: 'https://{yourOktaDomain}.com/oauth2/default',
  client_id: '{clientId}',
  redirect_uri: window.location.origin + '/implicit/callback',
  onAuthRequired: ({history}) => history.push('/login')
});

class App extends Component {
  render() {
    return (
      <Router history={history}>
        <Security auth={auth} >
          <Route path='/' exact={true} component={Home}/>
          <SecureRoute path='/protected' component={Protected}/>
          <Route path='/implicit/callback' component={ImplicitCallback} />
        </Security>
      </Router>
    );
  }
}

export default App;

SecureRoute

SecureRoute ensures that a route is only rendered if the user is authenticated. If the user is not authenticated, it calls onAuthRequired if it exists, otherwise, it redirects to Okta.

ImplicitCallback

ImplicitCallback handles the callback after the redirect. By default, it parses the tokens from the uri, stores them, then redirects to /. If a SecureRoute caused the redirect, then the callback redirects to the secured route.

withAuth

withAuth provides a way for components to make decisions based on auth state. It injects an auth prop into the component.

auth

auth provides methods that allow managing tokens and auth state. All of the methods return Promises.

auth.isAuthenticated()

Returns true or false, depending on whether the user has an active access or id token.

auth.getUser()

Returns the result of the OpenID Connect /userinfo endpoint if an access token exists.

auth.getIdToken()

Retrieves the id token from storage if it exists.

auth.getAccessToken()

Retrieves the access token from storage if it exists.

auth.login(fromUri, additionalParams)

Calls onAuthRequired or redirects to Okta if onAuthRequired is undefined. This method accepts a fromUri parameter to push the user to after successful authentication, and an optional additionalParams object.

For more information on additionalParams, see the auth.redirect method below.

auth.logout(uri)

Terminates the user's session in Okta and clears all stored tokens. Accepts an optional uri parameter to push the user to after logout.

auth.redirect(additionalParams)

Performs a full-page redirect to Okta with optional request parameters.

The additionalParams are mapped to Okta's /authorize request parameters. This will override any existing configuration. As an example, if you have an Okta sessionToken, you can bypass the full-page redirect by passing in this token. This is recommended when using the Okta Sign-In Widget. Simply pass in a sessionToken into the redirect method as follows:

auth.redirect({
  sessionToken: '{sampleSessionToken}'
});

Note: For information on obtaining a sessionToken using the Okta Sign-In Widget, please see the renderEl() example.

auth.handleAuthentication()

Parses tokens from the url and stores them.

Development

See the getting started section for step-by-step instructions.

Commands

Command	Description
yarn start	Start the sample app using the SDK
yarn test	Run unit and integration tests
yarn lint	Run eslint linting tests