React package for OAuth2 Authorization Code flow with PKCE
Adhering to the RFCs recommendations, cryptographically sound, and with zero dependencies!
Short version;
The modern and secure way to do authentication for mobile and web applications!
Long version;
https://www.rfc-editor.org/rfc/rfc6749.html
https://datatracker.ietf.org/doc/html/rfc7636
https://oauth.net/2/pkce/
- Authorization provider-agnostic. Works equally well with all OAuth2 authentication servers following the OAuth2 spec
- Supports OpenID Connect (idTokens)
- Pre- and Post-login callbacks
- Session expired callback
- Silently refreshes short-lived access tokens in the background
- Decodes JWT's
- A total of ~440 lines of code, easy for anyone to audit and understand
import { AuthContext, AuthProvider, TAuthConfig, TRefreshTokenExpiredEvent } from "react-oauth2-code-pkce"
const authConfig: TAuthConfig = {
clientId: 'myClientID',
authorizationEndpoint: 'https://myAuthProvider.com/auth',
tokenEndpoint: 'https://myAuthProvider.com/token',
redirectUri: 'http://localhost:3000/',
scope: 'someScope openid',
onRefreshTokenExpire: (event: TRefreshTokenExpiredEvent) => window.confirm('Session expired. Refresh page to continue using the site?') && event.login(),
}
const UserInfo = (): JSX.Element => {
const {token, tokenData} = useContext<IAuthContext>(AuthContext)
return <>
<h4>Access Token</h4>
<pre>{token}</pre>
<h4>User Information from JWT</h4>
<pre>{JSON.stringify(tokenData, null, 2)}</pre>
</>
}
ReactDOM.render(<AuthProvider authConfig={authConfig}>
<UserInfo/>
</AuthProvider>
, document.getElementById('root'),
)For more advanced examples, see ./examples/.
The package is available on npmjs.com here; https://www.npmjs.com/package/react-oauth2-code-pkce
npm install react-oauth2-code-pkceThe object that's returned by useContext(AuthContext) provides these values;
interface IAuthContext {
// The access token. This is what you will use for authentication against protected Web API's
token: string
// An object with all the properties encoded in the token (username, email, etc.), if the token is a JWT
tokenData?: TTokenData
// Function to trigger login.
// If you want to use 'state', you might want to set 'clearURL' configuration parameter to 'false'.
login: (state?: string) => void
// Function to trigger logout from authentication provider. You may provide optional 'state', and 'logout_hint' values.
// See https://openid.net/specs/openid-connect-rpinitiated-1_0.html#RPLogout for details.
logOut: (state?: string, logoutHint?: string) => void
// Keeps any errors that occured during login, token fetching/refreshing, decoding, etc..
error: string | null
// The idToken, if it was returned along with the access token
idToken?: string
// An object with all the properties encoded in the ID-token (username, groups, etc.)
idTokenData?: TTokenData
// If the <AuthProvider> is done fetching tokens or not. Usefull for controlling page rendering
loginInProgress: boolean
}react-oauth2-code-pkce's goal is to "just work" with any authentication provider that either
supports the OAuth2 or OpenID Connect (OIDC) standards.
However, many authentication providers are not following these standards, or have extended them.
With this in mind, if you are experiencing any problems, a good place to start is to see if the provider expects some custom parameters.
If they do, these can be injected into the different calls with these configuration options;
extraAuthParametersextraTokenParametersextraLogoutParameters
The <AuthProvider> takes a config object that supports these parameters;
type TAuthConfig = {
// Id of your app at the authentication provider
clientId: string // Required
// URL for the authentication endpoint at the authentication provider
authorizationEndpoint: string // Required
// URL for the token endpoint at the authentication provider
tokenEndpoint: string // Required
// Which URL the auth provider should redirect the user after successfull authentication/login
redirectUri: string // Required
// Which scopes to request for the auth token
scope?: string // default: ''
// Optional state value. Will often make more sense to provide the state in a call to the 'login()' function
state?: string // default: null
// Which URL to call for logging out of the auth provider
logoutEndpoint?: string // default: null
// Which URL the auth provider should redirect the user to after logout
logoutRedirect?: string // default: null
// Optionally provide a callback function to run _before_ the
// user is redirected to the auth server for login
preLogin?: () => void // default: () => null
// Optionally provide a callback function to run _after_ the
// user has been redirected back from the auth server
postLogin?: () => void // default: () => null
// Optional callback function for the 'refreshTokenExpired' event.
// You likely want to display a message saying the user need to login again. A page refresh is enough.
onRefreshTokenExpire?: (event: TRefreshTokenExpiredEvent) => void // default: undefined
// Whether or not to decode the access token (should be set to 'false' if the access token is not a JWT (e.g. from Github))
// If `false`, 'tokenData' will be 'undefined' from the <AuthContext>
decodeToken?: boolean // default: true
// By default, the package will automatically redirect the user to the login server if not already logged in.
// If set to false, you need to call the "login()" function to login (e.g. with a "Login" button)
autoLogin?: boolean // default: true
// Store login state in 'localStorage' or 'sessionStorage'
// If set to 'session', no login state is persisted by 'react-oauth2-code-pkce` when the browser closes.
// NOTE: Many authentication servers will keep the client logged in by cookies. You should therefore use
// the 'logout()'-function to properly logout the client. Or configure your server not to issue cookies.
storage?: 'local' | 'session' // default: 'local'
// Sets the prefix used when storing login state
storageKeyPrefix?: string // default: 'ROCP_'
// Set to false if you need to access the urlParameters sent back from the login server.
clearURL?: boolean // default: true
// Can be used to provide any non-standard parameters to the authentication request
extraAuthParameters?: { [key: string]: string | boolean | number } // default: null
// Can be used to provide any non-standard parameters to the token request
extraTokenParameters?: { [key: string]: string | boolean | number } // default: null
// Can be used to provide any non-standard parameters to the logout request
extraLogoutParameters?: { [key: string]: string | boolean | number } // default: null
// Superseded by 'extraTokenParameters' options. Will be deprecated in 2.0
extraAuthParams?: { [key: string]: string | boolean | number } // default: null
// Can be used if auth provider doesn't return access token expiration time in token response
tokenExpiresIn?: number // default: null
// Can be used if auth provider doesn't return refresh token expiration time in token response
refreshTokenExpiresIn?: number // default: null
// Whether or not to post 'scope' when refreshing the access token
refreshWithScope?: boolean // default: true
}If you are using libraries that intercept any fetch()-requests made. For example @tanstack/react-query. That can cause
issues for the AuthProviders token fetching. This can be solved by not wrapping the <AuthProvider> in any such library.
This could also happend if some routes in your app are not wrapped by the <AuthProvider>.
This will happen if you haven't provided a callback-function for the onRefreshTokenExpire config parameter, and the refresh token expires.
You probably want to implement some kind of "alert/message/banner", saying that the session has expired and that the user needs to login again.
Either by refreshing the page, or clicking a "Login-button".
- Update the 'authConfig' object in
src/index.jswith config from your authorization server and application - Install node_modules ->
$ yarn install - Run ->
$ yarn start
You are most welcome to create issues and pull requests :)