haydenholligan / Lock.swift

A Swift & iOS framework to authenticate using Auth0 and with a Native Look & Feel

Lock.swift

Auth0 is an authentication broker that supports social identity providers as well as enterprise identity providers such as Active Directory, LDAP, Google Apps and Salesforce.

Lock makes it easy to integrate SSO in your app. You won't have to worry about:

• Having a professional looking login dialog that displays well on any device.
• Finding the right icons for popular social providers.
• Solving the home realm discovery challenge with enterprise users (i.e.: asking the enterprise user the email, and redirecting to the right enterprise identity provider).
• Implementing a standard sign in protocol (OpenID Connect / OAuth2 Login)

Need help migrating from v1? Please check our Migration Guide

Requirements

• iOS 9 or later
• Xcode 8
• Swift 3.0

Install

CocoaPods

Add the following line to your Podfile:

pod "Lock", "~> 2.1.0"

Carthage

In your Cartfile add

github "auth0/Lock.swift" "2.0.0"

Usage

First import Lock

import Lock

Next in your AppDelegate.swift add the following:

func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any]) -> Bool {
  return Lock.resumeAuth(url, options: options)
}

Configuration

In order to use Lock you need to provide your Auth0 Client Id and Domain.

Auth0 ClientId & Domain can be found in your Auth0 Dashboard

Auth0.plist file

In your application bundle you can add a plist file named Auth0.plist with the following format

<?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>{YOUR_CLIENT_ID}</string>
  <key>Domain</key>
  <string>{YOUR_DOMAIN}</string>
</dict>
</plist>

Classic

Lock Classic handles authentication using Database, Social & Enterprise connections.

To show Lock, add the following snippet in your UIViewController

Lock
    .classic()
    .withOptions {
        $0.closable = false
    }
    .withStyle {
      $0.title = "Welcome to my App!"
    }
    .onAuth {
      print("Obtained credentials \($0)")
    }
    .onError {
      print("Failed with \($0)")
    }
    .onCancel {
      print("User cancelled")
    }
    .present(from: self)

Specify Connections

Lock will automatically load your client configuration automatically, if you wish to override this behaviour you can manually specify which of your connections to use.

Before presenting Lock you can tell it what connections it should display and use to authenticate an user. You can do that by calling the method and supply a closure that can specify the connections.

Adding a database connection:

.withConnections {
    $0.database(name: "Username-Password-Authentication", requiresUsername: true)
}

Adding multiple social connections:

connections.database(name: "{CONNECTION_NAME}", requiresUsername: true)

.withConnections { connections in
    connections.social(name: "facebook", style: .Facebook)
    connections.social(name: "google-oauth2", style: .Google)
}

Logging

You can easily turn on/off logging capabilities.

Lock
    .classic()
    .withOptions {
        $0.logLevel = .all
        $0.logHttpRequest = true
    }

Styling Lock

Lock provides many styling options to help you apply your own brand identity to Lock.

Customize your header and primary color

.withStyle {
  $0.title = "Company LLC"
  $0.logo = LazyImage(name: "company_logo")
  $0.primaryColor = UIColor(red: 0.6784, green: 0.5412, blue: 0.7333, alpha: 1.0)
}

You can explore the full range of styling options in Style.swift

Styling a custom OAuth2 connection

.withStyle {
  $0.oauth2["slack"] = AuthStyle(
      name: "Slack",
      color: UIColor(red: 0.4118, green: 0.8078, blue: 0.6588, alpha: 1.0),
      withImage: LazyImage(name: "ic_slack")
  )
}

Customization options

Lock provides numerous options to customize the Lock experience.

Closable

Allows Lock to be dismissed by the user. By default this is false.

.withOptions {
    $0.closable = true
}

Terms of Service

By default Lock will use Auth0's Terms of Service and Privacy Policy

.withOptions {
  $0.termsOfService = "https://mycompany.com/terms"
  $0.privacyPolicy = "https://mycompany.com/privacy"
}

Logging

• logLevel: By default this is .off, Syslog logging levels are supported.
• logHttpRequest: Log Auth0.swift API requests. By default this is false
• loggerOutput: Specify output handler, by default this uses the print statement.

.withOptions {
    $0.logLevel = .all
    $0.logHttpRequest = true
    $0.loggerOutput = CleanroomLockLogger()
}

In the code above, the loggerOutput has been set to use CleanroomLogger. This can typically be achieved by implementing the loggerOutput protocol. You can of course use your favorite logger library.

class CleanroomLockLogger: LoggerOutput {
  func message(_ message: String, level: LoggerLevel, filename: String, line: Int) {
    let channel: LogChannel?
    switch level {
    case .debug:
        channel = Log.debug
    case .error:
        channel = Log.error
    case .info:
        channel = Log.info
    case .verbose:
        channel = Log.verbose
    case .warn:
        channel = Log.warning
    default:
        channel = nil
    }
    channel?.message(message, filePath: filename, fileLine: line)
  }
}

Scope

Scope used for authentication. By default is openid. It will return not only the access_token, but also an id_token which is a JSON Web Token (JWT) containing user information.

.withOptions {
  $0.scope = "openid name email picture"
}

Connection Scope

Allows you to set provider scopes for oauth2/social connections with a comma separated list. By default is empty.

.withOptions {
  $0.connectionScope = ["facebook": "user_friends,email"]
}

Database

• allow: Which database screens will be accessible, the default is enable all screens e.g. .Login, .Signup, .ResetPassword
• initialScreen: The first screen to present to the user, the default is .login.
• usernameStyle: Specify the type of identifier the login will require. The default is either [.Username, .Email]. However it's important to note that this option is only active if you have set the requires_username flag to true in your Auth0 Dashboard

.withOptions {
  $0.allow = [.Login, .ResetPassword]
  $0.initialScreen = .login
  $0.usernameStyle = [.Username]
}

#### Custom Signup Fields

When signing up the default information requirements are the user's email and password. You can expand your data capture requirements as needed.

.withOptions {
  $0.customSignupFields = [
    CustomTextField(name: "first_name", placeholder: "First Name", icon: LazyImage(name: "ic_person", bundle: Lock.bundle)),
    CustomTextField(name: "last_name", placeholder: "Last Name", icon: LazyImage(name: "ic_person", bundle: Lock.bundle))
  ]
}

Note: You must specify the icon to use with your custom text field and store it in your App's bundle.

#### Enterprise

• enterpriseConnectionUsingActiveAuth: By default Enterprise connections will use Web Authentication. However you can specify which connections will alternatively use credential authentication and prompt for a username and password.
• activeDirectoryEmailAsUsername: When Lock request your enterprise credentials after performing Home Realm Discovery (HRD), e.g. for Active Directory, it will try to prefill the username for you. By default it will parse the email's local part and use that as the username, e.g. [e-mail] will be john.doe. If you don't want that you can turn on this flag and it will just use the email address.

.withOptions {
  $0.activeDirectoryEmailAsUsername = true
  $0.enterpriseConnectionUsingActiveAuth = ["enterprisedomain.com"]
}

What is Auth0?

Auth0 helps you to:

• Add authentication with multiple authentication sources, either social like Google, Facebook, Microsoft Account, LinkedIn, GitHub, Twitter, Box, Salesforce, amont others, or enterprise identity systems like Windows Azure AD, Google Apps, Active Directory, ADFS or any SAML Identity Provider.
• Add support for Custom OAuth2 Connections.
• Add authentication through more traditional username/password databases.
• Add support for linking different user accounts with the same user.
• Support for generating signed JSON Web Tokens to call your APIs and flow the user identity securely.
• Analytics of how, when and where users are logging in.
• Pull data from other sources and add it to the user profile, through JavaScript rules.

Create a free account in Auth0

1. Go to Auth0 and click Sign Up.
2. Use Google, GitHub or Microsoft Account to login.

Issue Reporting

If you have found a bug or if you have a feature request, please report them at this repository issues section. Please do not report security vulnerabilities on the public GitHub issue tracker. The Responsible Disclosure Program details the procedure for disclosing security issues.

Author

Auth0

License

This project is licensed under the MIT license. See the LICENSE file for more info.