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React Native bridge for AppAuth for supporting any OAuth 2 provider

React Native bridge for AppAuth for supporting any OAuth 2 provider

React Native App Auth

React native bridge for AppAuth - an SDK for communicating with OAuth2 providers

This is the API documentation for react-native-app-auth >= 2.0. See version 1.x documentation here.
React Native bridge for AppAuth-iOS and AppAuth-Android SDKS for communicating with OAuth 2.0 and OpenID Connect providers.

This library should support any OAuth provider that implements the OAuth2 spec.

Why you may want to use this library

AppAuth is a mature OAuth client implementation that follows the best practices set out in
RFC 8252 - OAuth 2.0 for Native Apps including using
SFAuthenticationSession and SFSafariViewController on iOS, and
Custom Tabs on
Android. WebViews are explicitly not supported due to the security and usability reasons
explained in Section 8.12 of RFC 8252.

AppAuth also supports the PKCE ("Pixy") extension to OAuth
which was created to secure authorization codes in public clients when custom URI scheme redirects
are used.

To learn more, read this short introduction to OAuth and PKCE on the Formidable blog.

Supported methods

See Usage for example configurations, and the included Example application for
a working sample.

authorize

This is the main function to use for authentication. Invoking this function will do the whole login
flow and returns the access token, refresh token and access token expiry date when successful, or it
throws an error when not successful.

import { authorize } from 'react-native-app-auth';

const config = {
  issuer: '<YOUR_ISSUER_URL>',
  clientId: '<YOUR_CLIENT_ID>',
  redirectUrl: '<YOUR_REDIRECT_URL>',
  scopes: ['<YOUR_SCOPES_ARRAY>'],
};

const result = await authorize(config);

config

This is your configuration object for the client. The config is passed into each of the methods
with optional overrides.

  • issuer - (string) base URI of the authentication server. If no serviceConfiguration (below) is provided, issuer is a mandatory field, so that the configuration can be fetched from the issuer's OIDC discovery endpoint.
  • serviceConfiguration - (object) you may manually configure token exchange endpoints in cases where the issuer does not support the OIDC discovery protocol, or simply to avoid an additional round trip to fetch the configuration. If no issuer (above) is provided, the service configuration is mandatory.
    • authorizationEndpoint - (string) REQUIRED fully formed url to the OAuth authorization endpoint
    • tokenEndpoint - (string) REQUIRED fully formed url to the OAuth token exchange endpoint
    • revocationEndpoint - (string) fully formed url to the OAuth token revocation endpoint. If you want to be able to revoke a token and no issuer is specified, this field is mandatory.
    • registrationEndpoint - (string) fully formed url to your OAuth/OpenID Connect registration endpoint. Only necessary for servers that require client registration.
  • clientId - (string) REQUIRED your client id on the auth server
  • clientSecret - (string) client secret to pass to token exchange requests. :warning: Read more about client secrets
  • redirectUrl - (string) REQUIRED the url that links back to your app with the auth code
  • scopes - (array<string>) the scopes for your token, e.g. ['email', 'offline_access'].
  • additionalParameters - (object) additional parameters that will be passed in the authorization request.
    Must be string values! E.g. setting additionalParameters: { hello: 'world', foo: 'bar' } would add
    hello=world&foo=bar to the authorization request.
  • dangerouslyAllowInsecureHttpRequests - (boolean) ANDROID whether to allow requests over plain HTTP or with self-signed SSL certificates. :warning: Can be useful for testing against local server, should not be used in production. This setting has no effect on iOS; to enable insecure HTTP requests, add a NSExceptionAllowsInsecureHTTPLoads exception to your App Transport Security settings.

result

This is the result from the auth server

  • accessToken - (string) the access token
  • accessTokenExpirationDate - (string) the token expiration date
  • additionalParameters - (Object) additional url parameters from the auth server
  • idToken - (string) the id token
  • refreshToken - (string) the refresh token
  • tokenType - (string) the token type, e.g. Bearer

refresh

This method will refresh the accessToken using the refreshToken. Some auth providers will also give
you a new refreshToken

import { refresh } from 'react-native-app-auth';

const config = {
  issuer: '<YOUR_ISSUER_URL>',
  clientId: '<YOUR_CLIENT_ID>',
  redirectUrl: '<YOUR_REDIRECT_URL>',
  scopes: ['<YOUR_SCOPES_ARRAY>'],
};

const result = await refresh(config, {
  refreshToken: `<REFRESH_TOKEN>`
});

revoke

This method will revoke a token. The tokenToRevoke can be either an accessToken or a refreshToken

import { revoke } from 'react-native-app-auth';

const config = {
  issuer: '<YOUR_ISSUER_URL>',
  clientId: '<YOUR_CLIENT_ID>',
  redirectUrl: '<YOUR_REDIRECT_URL>',
  scopes: ['<YOUR_SCOPES_ARRAY>'],
};

const result = await revoke(config, {
  tokenToRevoke: `<TOKEN_TO_REVOKE>`
});

Getting started

npm install react-native-app-auth --save
react-native link react-native-app-auth

Then follow the Setup steps to configure the native iOS and Android projects.

If you are not using react-native link, perform the Manual installation
steps instead.

Manual installation

iOS

  1. In XCode, in the project navigator, right click LibrariesAdd Files to [your project's name]
  2. Go to node_modulesreact-native-app-auth and add RNAppAuth.xcodeproj
  3. In XCode, in the project navigator, select your project. Add libRNAppAuth.a to your project's
    Build PhasesLink Binary With Libraries
  4. Run your project (Cmd+R)<

Android

  1. Open up android/app/src/main/java/[...]/MainApplication.java
  • Add import com.reactlibrary.RNAppAuthPackage; to the imports at the top of the file
  • Add new RNAppAuthPackage() to the list returned by the getPackages() method
  1. Append the following lines to android/settings.gradle:
    include ':react-native-app-auth'
    project(':react-native-app-auth').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-app-auth/android')
    
  2. Insert the following lines inside the dependencies block in android/app/build.gradle:
      compile project(':react-native-app-auth')
    

Setup

iOS Setup

To setup the iOS project, you need to perform three steps:

  1. Install native dependencies
  2. Register redirect URL scheme
  3. Define openURL callback in AppDelegate
Install native dependencies

This library depends on the native AppAuth-ios project. To
keep the React Native library agnostic of your dependency management method, the native libraries
are not distributed as part of the bridge.

AppAuth supports three options for dependency management.

  1. CocoaPods

    With CocoaPods, add the following line to
    your Podfile:

     pod 'AppAuth', '>= 0.91'
    

    Then run pod install. Note that version 0.91 is the first of the library to support iOS 11.

  2. Carthage

    With Carthage, add the following line to your Cartfile:

     github "openid/AppAuth-iOS" "master"
    

    Then run carthage bootstrap.

  3. Static Library

    You can also use AppAuth-iOS as a static library. This
    requires linking the library and your project and including the headers. Suggested configuration:

    1. Create an XCode Workspace.
    2. Add AppAuth.xcodeproj to your Workspace.
    3. Include libAppAuth as a linked library for your target (in the "General -> Linked Framework and
      Libraries" section of your target).
    4. Add AppAuth-iOS/Source to your search paths of your target ("Build Settings -> "Header Search
      Paths").
Register redirect URL scheme

If you intend to support iOS 10 and older, you need to define the supported redirect URL schemes in
your Info.plist as follows:

<key>CFBundleURLTypes</key>
<array>
  <dict>
    <key>CFBundleURLName</key>
    <string>com.your.app.identifier</string>
    <key>CFBundleURLSchemes</key>
    <array>
      <string>io.identityserver.demo</string>
    </array>
  </dict>
</array>
  • CFBundleURLName is any globally unique string. A common practice is to use your app identifier.
  • CFBundleURLSchemes is an array of URL schemes your app needs to handle. The scheme is the
    beginning of your OAuth Redirect URL, up to the scheme separator (:) character.
Define openURL callback in AppDelegate

You need to have a property in your AppDelegate to hold the auth session, in order to continue the
authorization flow from the redirect. To add this, open AppDelegate.h in your project and add the
following lines:

+ @protocol OIDAuthorizationFlowSession;

  @interface AppDelegate : UIResponder <UIApplicationDelegate>
+ @property(nonatomic, strong, nullable) id<OIDAuthorizationFlowSession> currentAuthorizationFlow;
  @property (nonatomic, strong) UIWindow *window;
  @end

The authorization response URL is returned to the app via the iOS openURL app delegate method, so
you need to pipe this through to the current authorization session (created in the previous
instruction).

Add a current Authorization session

To do this, open AppDelegate.m and add an import statement:

#import <AppAuth/AppAuth.h>

And in the bottom of the class, add the following handler:

- (BOOL)application:(UIApplication *)app
            openURL:(NSURL *)url
            options:(NSDictionary<NSString *, id> *)options {
  if ([_currentAuthorizationFlow resumeAuthorizationFlowWithURL:url]) {
    _currentAuthorizationFlow = nil;
    return YES;
  }
  return NO;
}

Integration of the library with a Swift iOS project

Until a better solution is available, we must use react-native-app-auth as a Static Library. This is due to the fact that the library is calling AppDelegate.swift.

  1. Unlink react-native-app-auth from your projects Libraries/.

  2. Manually copy the RNAppAuth.h and RNAppAuth.m files from the library folder in your node_modules/ into your project folder.

  3. In RNAppAuth.m add a new import:

    #import "<YouProjectName>-Swift.h"
    
  4. In your project's AppDelegate.swift, expose your function to Objective-C by annotating the AppDelegate with:

    @objc(AppDelegate)
    
  5. Add the following code just after the class declaration:

    var currentAuthorizationFlow: OIDAuthorizationFlowSession?
    
  6. At the bottom of your class add the following code:

    func application(
      _ app: UIApplication,
      open url: URL,
      options: [UIApplicationOpenURLOptionsKey: Any] = [:]) -> Bool {
    
      if currentAuthorizationFlow!.resumeAuthorizationFlow(with: url){
        currentAuthorizationFlow = nil
        return true
      }
    
      return false;
    }
    

    This is a translation of the following Objective-C code provided above

Warning:

You may need to perform Step 4 and compile your project so that the hidden bridging header file is created. If this file is not created and you follow the rest of the steps then you may fall into a chicken before the egg problem where the project is failing to build because of the missing header file and the header file won't be created because the build is failing.

Android Setup

To setup the Android project, you need to perform two steps:

  1. Install Android support libraries
  2. Add redirect scheme manifest placeholder
Install Android support libraries

This library depends on the AppAuth-Android project.
The native dependencies for Android are automatically installed by Gradle, but you need to add the
correct Android Support library version to your project:

  1. Add the Google Maven repository in your android/build.gradle
    repositories {
      google()
    }
    
  2. Make sure the appcompat version in android/app/build.gradle matches the one expected by
    AppAuth. If you generated your project using react-native init, you may have an older version
    of the appcompat libraries and need to upgdrade:
    dependencies {
      compile "com.android.support:appcompat-v7:25.3.1"
    }
    
  3. If necessary, update the compileSdkVersion to 25:
    android {
      compileSdkVersion 25
    }
    
Add redirect scheme manifest placeholder

To
capture the authorization redirect,
add the following property to the defaultConfig in android/app/build.gradle:

android {
  defaultConfig {
    manifestPlaceholders = [
      appAuthRedirectScheme: 'io.identityserver.demo'
    ]
  }
}

The scheme is the beginning of your OAuth Redirect URL, up to the scheme separator (:) character.

Usage

import { authorize } from 'react-native-app-auth';

// base config
const config = {
  issuer: '<YOUR_ISSUER_URL>',
  clientId: '<YOUR_CLIENT_ID>',
  redirectUrl: '<YOUR_REDIRECT_URL>',
  scopes: ['<YOUR_SCOPES_ARRAY>'],
};

// use the client to make the auth request and receive the authState
try {
  const result = await authorize(config);
  // result includes accessToken, accessTokenExpirationDate and refreshToken
} catch (error) {
  console.log(error);
}

See example configurations for different providers below.

Note about client secrets

Some authentication providers, including examples cited below, require you to provide a client secret. The authors of the AppAuth library

strongly recommend you avoid using static client secrets in your native applications whenever possible. Client secrets derived via a dynamic client registration are safe to use, but static client secrets can be easily extracted from your apps and allow others to impersonate your app and steal user data. If client secrets must be used by the OAuth2 provider you are integrating with, we strongly recommend performing the code exchange step on your backend, where the client secret can be kept hidden.

Having said this, in some cases using client secrets is unavoidable. In these cases, a clientSecret parameter can be provided to authorize/refresh calls when performing a token request.

Identity Server 4

This library supports authenticating for Identity Server 4 out of the box. Some quirks:

  1. In order to enable refresh tokens, offline_access must be passed in as a scope variable
  2. In order to revoke the access token, we must sent client id in the method body of the request.
    This is not part of the OAuth spec.
// Note "offline_access" scope is required to get a refresh token
const config = {
  issuer: 'https://demo.identityserver.io',
  clientId: 'native.code',
  redirectUrl: 'io.identityserver.demo:/oauthredirect',
  scopes: ['openid', 'profile', 'offline_access']
};

// Log in to get an authentication token
const authState = await authorize(config);

// Refresh token
const refreshedState = await refresh({
  ...config,
  refreshToken: authState.refreshToken,
});

// Revoke token, note that Identity Server expects a client id on revoke
await revoke(config, {
  tokenToRevoke: refreshedState.refreshToken,
  sendClientId: true
});
Example server configuration
var client = new Client
{
  ClientId = "native.code",
  ClientName = "Native Client (Code with PKCE)",
  RequireClientSecret = false,
  RedirectUris = { "io.identityserver.demo:/oauthredirect" },
  AllowedGrantTypes = GrantTypes.Code,
  RequirePkce = true,
  AllowedScopes = { "openid", "profile" },
  AllowOfflineAccess = true
};

Identity Server 3

This library supports authenticating with Identity Server 3. The only difference from
Identity Server 4 is that it requires a clientSecret and there is no way to opt out of it.

// You must include a clientSecret
const config = {
  issuer: 'your-identityserver-url',
  clientId: 'your-client-id',
  clientSecret: 'your-client-secret',
  redirectUrl: 'com.your.app.name:/oauthredirect',
  scopes: ['openid', 'profile', 'offline_access']
};

// Log in to get an authentication token
const authState = await authorize(config);

// Refresh token
const refreshedState = await refresh({
  ...config,
  refreshToken: authState.refreshToken,
});

// Revoke token, note that Identity Server expects a client id on revoke
await revoke(config, {
  tokenToRevoke: refreshedState.refreshToken,
  sendClientId: true
});
Example server configuration
var client = new Client
{
  ClientId = "native.code",
  ClientName = "Native Client (Code with PKCE)",
  Flow = Flows.AuthorizationCodeWithProofKey,            
  RedirectUris = { "com.your.app.name:/oauthredirect" },
  ClientSecrets = new List<Secret> { new Secret("your-client-secret".Sha256()) },
  AllowAccessToAllScopes = true
};

Google

Full support out of the box.

const config = {
  issuer: 'https://accounts.google.com',
  clientId: 'GOOGLE_OAUTH_APP_GUID.apps.googleusercontent.com',
  redirectUrl: 'com.googleusercontent.apps.GOOGLE_OAUTH_APP_GUID:/oauth2redirect/google',
  scopes: ['openid', 'profile', 'offline_access']
};

// Log in to get an authentication token
const authState = await authorize(config);

// Refresh token
const refreshedState = await refresh(config, {
  refreshToken: authState.refreshToken
});

// Revoke token
await revoke(config, {
  tokenToRevoke: refreshedState.refreshToken
});

Okta

Full support out of the box.

If you're using Okta and want to add App Auth to your React Native application, you'll need an application to authorize against. If you don't have an Okta Developer account, you can signup for free.

Log in to your Okta Developer account and navigate to Applications > Add Application. Click Native and click the Next button. Give the app a name you’ll remember (e.g., React Native), select Refresh Token as a grant type, in addition to the default Authorization Code. Copy the Login redirect URI (e.g., com.oktapreview.dev-158606:/callback) and save it somewhere. You'll need this value when configuring your app.

Click Done and you'll see a client ID on the next screen. Copy the redirect URI and clientId values into your App Auth config.

const config = {
  issuer: 'https://{yourOktaDomain}.com/oauth2/default',
  clientId: '{clientId}',
  redirectUrl: 'com.{yourReversedOktaDomain}:/callback',
  scopes: ['openid', 'profile']
};

// Log in to get an authentication token
const authState = await authorize(config);

// Refresh token
const refreshedState = await refresh(config, {
  refreshToken: authState.refreshToken,
});

// Revoke token
await revoke(config, {
  tokenToRevoke: refreshedState.refreshToken
});

Keycloak

Keycloak does not specify a revocation endpoint so revoke functionality doesn't work.

If you use JHipster's default Keycloak Docker image, everything will work with the following settings, except for revoke.

const config = {
  issuer: 'http://localhost:9080/auth/realms/jhipster',
  clientId: 'web_app',
  redirectUrl: '<YOUR_REDIRECT_SCHEME>:/callback'
  scopes: ['openid', 'profile']
};

// Log in to get an authentication token
const authState = await authorize(config);

// Refresh token
const refreshedState = await refresh(config, {
  refreshToken: authState.refreshToken,
});

Uber

Uber provides an OAuth 2.0 endpoint for logging in with a Uber user's credentials. You'll need to first create an Uber OAuth application here.

Please note:

  • Uber does not provide a OIDC discovery endpoint, so serviceConfiguration is used instead.
  • Uber OAuth requires a client secret.
const config = {
  clientId: 'your-client-id-generated-by-uber',
  clientSecret: 'your-client-secret-generated-by-uber',
  redirectUrl: 'com.whatever.url.you.configured.in.uber.oauth://redirect', //note: path is required
  scopes: ['profile', 'delivery'], // whatever scopes you configured in Uber OAuth portal
  serviceConfiguration: {
    authorizationEndpoint: 'https://login.uber.com/oauth/v2/authorize',
    tokenEndpoint: 'https://login.uber.com/oauth/v2/token',
    revocationEndpoint: 'https://login.uber.com/oauth/v2/revoke'
  }
};

// Log in to get an authentication token
const authState = await authorize(config);

// Refresh token
const refreshedState = await refresh(config, {
  refreshToken: authState.refreshToken,
});

// Revoke token
await revoke(config, {
  tokenToRevoke: refreshedState.refreshToken
});

Fitbit

Fitbit provides an OAuth 2.0 endpoint for logging in with a Fitbit user's credentials. You'll need to first register your Fitbit application here.

Please note:

  • Fitbit does not provide a OIDC discovery endpoint, so serviceConfiguration is used instead.
  • Fitbit OAuth requires a client secret.
const config = {
  clientId: 'your-client-id-generated-by-uber',
  clientSecret: 'your-client-secret-generated-by-fitbit',
  redirectUrl: 'com.whatever.url.you.configured.in.uber.oauth://redirect', //note: path is required
  scopes: ['activity', 'sleep'],
  serviceConfiguration: {
    authorizationEndpoint: 'https://www.fitbit.com/oauth2/authorize',
    tokenEndpoint: 'https://api.fitbit.com/oauth2/token',
    revocationEndpoint: 'https://api.fitbit.com/oauth2/revoke'
  }
};

// Log in to get an authentication token
const authState = await authorize(config);

// Refresh token
const refreshedState = await refresh(config, {
  refreshToken: authState.refreshToken,
});

// Revoke token
await revoke(config, {
  tokenToRevoke: refreshedState.refreshToken
});

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