Auth0.swift

Overview

Swift SDK for iOS, macOS, tvOS, and watchOS that enables you to seamlessly integrate Auth0 into your apps. Add login and logout, store credentials securely, and access user information.

See the GitHub repository

Migrating from v1? Check the Migration Guide

Documentation

• Quickstart: Shows how to integrate Auth0.swift into an iOS / macOS app from scratch.

• Sample App: A complete, running iOS / macOS app you can try.

• Examples: Explains how to use most features.

• API Documentation: Documentation auto-generated from the code comments that explains all the available features.

  • Web Auth
  • Credentials Manager
  • Authentication API Client
  • Management API Client (Users)

• FAQ: Answers some common questions about Auth0.swift.

• Auth0 Documentation: Explore our docs site and learn more about Auth0.

Getting started

Requirements

• iOS 13.0+ / macOS 11.0+ / tvOS 13.0+ / watchOS 7.0+
• Xcode 14.x
• Swift 5.7+

Check the Support Policy to learn when dropping Xcode, Swift, and platform versions will not be considered a breaking change.

Installation

Swift Package Manager

Open the following menu item in Xcode:

File > Add Packages…

In the Search or Enter Package URL search box enter this URL:

https://github.com/auth0/Auth0.swift

Then, select the dependency rule and press Add Package.

Cocoapods

Add the following line to your Podfile:

pod 'Auth0', '~> 2.0'

Then, run pod install.

Carthage

Add the following line to your Cartfile:

github "auth0/Auth0.swift" ~> 2.0

Then, run carthage bootstrap --use-xcframeworks.

Configure the SDK

Go to the Auth0 Dashboard and create a new Native application.

Auth0.swift needs the Client ID and Domain of the Auth0 application to communicate with Auth0. You can find these details in the Settings page of your Auth0 application. If you are using a custom domain, use the value of your custom domain instead of the value from the Settings page.

Configure Client ID and Domain with a plist

Create a plist file named Auth0.plist in your app bundle with the following content:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>ClientId</key>
    <string>{yourAuth0ClientId}</string>
    <key>Domain</key>
    <string>{yourAuth0Domain}</string>
</dict>
</plist>

Configure Client ID and Domain programmatically

For Web Auth

Auth0
    .webAuth(clientId: "{yourAuth0ClientID}", domain: "{yourAuth0Domain}")
    // ...

For the Authentication API client

Auth0
    .authentication(clientId: "{yourAuth0ClientID}", domain: "{yourAuth0Domain}")
    // ...

For the Management API client (Users)

Auth0
    .users(token: credentials.accessToken, domain: "{yourAuth0Domain}")
    // ...

Configure Web Auth (iOS / macOS)

Configure callback URL and logout URL

The callback URL and logout URL are the URLs that Auth0 invokes to redirect back to your application. Auth0 invokes the callback URL after authenticating the user, and the logout URL after removing the session cookie.

Since the callback URL and logout URL can be manipulated, you will need to add your URLs to the Allowed Callback URLs and Allowed Logout URLs fields in the Settings page of your Auth0 application. This will enable Auth0 to recognize these URLs as valid. If the callback URL and logout URL are not set, users will be unable to log in and out of the application and will get an error.

Go to the Settings page of your Auth0 application and add the corresponding URL to Allowed Callback URLs and Allowed Logout URLs, according to the platform of your application. If you are using a custom domain, replace {yourAuth0Domain} with the value of your custom domain instead of the value from the Settings page.

iOS

{yourBundleIdentifier}://{yourAuth0Domain}/ios/{yourBundleIdentifier}/callback

macOS

{yourBundleIdentifier}://{yourAuth0Domain}/macos/{yourBundleIdentifier}/callback

For example, if your iOS bundle identifier was com.example.MyApp and your Auth0 Domain was example.us.auth0.com, then this value would be:

com.example.MyApp://example.us.auth0.com/ios/com.example.MyApp/callback

Make sure that the Token Endpoint Authentication Method setting is set to None.

Configure custom URL scheme

In Xcode, go to the Info tab of your app target settings. In the URL Types section, click the ＋ button to add a new entry. There, enter auth0 into the Identifier field and $(PRODUCT_BUNDLE_IDENTIFIER) into the URL Schemes field.

This registers your bundle identifier as a custom URL scheme, so the callback URL and logout URL can reach your app.

Web Auth login (iOS / macOS)

Import the Auth0 module in the file where you want to present the login page.

import Auth0

Then, present the Universal Login page in the action of your Login button.

Auth0
    .webAuth()
    .start { result in
        switch result {
        case .success(let credentials):
            print("Obtained credentials: \(credentials)")
        case .failure(let error):
            print("Failed with: \(error)")
        }
    }

Using async/await

do {
    let credentials = try await Auth0.webAuth().start()
    print("Obtained credentials: \(credentials)")
} catch {
    print("Failed with: \(error)")
}

Using Combine

Auth0
    .webAuth()
    .start()
    .sink(receiveCompletion: { completion in
        if case .failure(let error) = completion {
            print("Failed with: \(error)")
        }
    }, receiveValue: { credentials in
        print("Obtained credentials: \(credentials)")
    })
    .store(in: &cancellables)

Web Auth logout (iOS / macOS)

Logging the user out involves clearing the Universal Login session cookie and then deleting the user’s credentials from your application.

Call the clearSession() method in the action of your Logout button. Once the session cookie has been cleared, delete the user’s credentials.

Auth0
    .webAuth()
    .clearSession { result in
        switch result {
        case .success:
            print("Session cookie cleared")
            // Delete credentials
        case .failure(let error):
            print("Failed with: \(error)")
        }
    }

Using async/await

do {
    try await Auth0.webAuth().clearSession()
    print("Session cookie cleared")
    // Delete credentials
} catch {
    print("Failed with: \(error)")
}

Using Combine

Auth0
    .webAuth()
    .clearSession()
    .sink(receiveCompletion: { completion in
        switch completion {
        case .finished:
            print("Session cookie cleared")
            // Delete credentials
        case .failure(let error):
            print("Failed with: \(error)")
        }
    }, receiveValue: {})
    .store(in: &cancellables)

SSO alert box (iOS / macOS)

Check the FAQ for more information about the alert box that pops up by default when using Web Auth.

See also How to Create a Seamless Mobile SSO (Single Sign-On) Experience in iOS for a detailed overview.

Next steps

Learn about most features in Examples:

• Store credentials: Store the user’s credentials securely in the Keychain.
• Check for stored credentials: Check if the user is already logged in when your app starts up.
• Retrieve stored credentials: Get the user’s credentials from the Keychain, automatically renewing them if they have expired.
• Clear stored credentials: Delete the user’s credentials to complete the logout process.
• Retrieve user information: Get the latest user information from the /userinfo endpoint.