Authentication Package for Unity

• OAuth2
  • Authorization code flow (https://www.rfc-editor.org/rfc/rfc6749#section-4.1)
  • Authorization code flow with PKCE (Proof Key for Code Exchange) (https://www.rfc-editor.org/rfc/rfc7636)
• Built-in clients
  • GitHub
  • Google
  • Facebook
• Built-in browser support
  • Deep link browser (iOS, Android, Universal Windows Platform and macOS) (https://docs.unity3d.com/Manual/deep-linking.html)
  • Standalone as local server (Windows, macOS and Linux)
  • ASWebAuthenticationSession (iOS) (https://developer.apple.com/documentation/authenticationservices/aswebauthenticationsession)
  • WKWebView (iOS) (https://developer.apple.com/documentation/webkit/wkwebview)

Install via Unity Package Manager:

• Add "com.cdm.authentication": "https://github.com/cdmvision/authentication-unity.git#1.2.0" to your project's package manifest file in dependencies section.
• Or, Package Manager > Add package from git URL... and paste this URL: https://github.com/cdmvision/authentication-unity.git#1.2.0

Example usage

You should create your client auth configuration:

// Also you can use your own client configuration.
var auth = new GoogleAuth()
{
  clientId = "...",
  redirectUrl = "...",
  scope = "openid email profile"
};

Authentication session is created with auth configuration and a browser:

using var authenticationSession = new AuthenticationSession(auth, new StandaloneBrowser());

Also you can use different browsers for each platform by using cross platform browser:

var crossPlatformBrowser = new CrossPlatformBrowser();
var crossPlatformBrowser.platformBrowsers.Add(RuntimePlatform.WindowsEditor, new StandaloneBrowser());
var crossPlatformBrowser.platformBrowsers.Add(RuntimePlatform.WindowsPlayer, new StandaloneBrowser());
var crossPlatformBrowser.platformBrowsers.Add(RuntimePlatform.OSXEditor, new StandaloneBrowser());
var crossPlatformBrowser.platformBrowsers.Add(RuntimePlatform.OSXPlayer, new StandaloneBrowser());
var crossPlatformBrowser.platformBrowsers.Add(RuntimePlatform.IPhonePlayer, new ASWebAuthenticationSessionBrowser());

using var authenticationSession = new AuthenticationSession(auth, crossPlatformBrowser);

// Opens a browser to log user in
AccessTokenResponse accessTokenResponse = await authenticationSession.AuthenticateAsync();

// Authentication header can be used to make authorized http calls.
AuthenticationHeaderValue authenticationHeader = accessTokenResponse.GetAuthenticationHeader();

// Gets the current acccess token, or refreshes if it is expired.
accessTokenResponse = await authenticationSession.GetOrRefreshTokenAsync();

// Gets new access token by using the refresh token.
AccessTokenResponse newAccessTokenResponse = await authenticationSession.RefreshTokenAsync();

// Or you can get new access token with specified refresh token (i.e. stored on the local disk to prevent multiple sign-in for each app launch)
newAccessTokenResponse = await authenticationSession.RefreshTokenAsync("my_refresh_token");