This class can be used to authenticate and manage OTP user tokens for strong two-factor authentication. It can create, update and delete tokens to authenticate users with one time passwords (OTP). The users data is stored in files.
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{tip} Want to get started fast? Install the laravel/ui Composer package and run php artisan ui vue --auth in a fresh Laravel application. After migrating your database, navigate your browser to http://your-app.test/register or any other URL that is assigned to your application. These commands will take care of scaffolding your entire authentication system!
Laravel makes implementing authentication very simple. In fact, almost everything is configured for you out of the box. The authentication configuration file is located at config/auth.php, which contains several well documented options for tweaking the behavior of the authentication services.
At its core, Laravel's authentication facilities are made up of 'guards' and 'providers'. Guards define how users are authenticated for each request. For example, Laravel ships with a session guard which maintains state using session storage and cookies.
Providers define how users are retrieved from your persistent storage. Laravel ships with support for retrieving users using Eloquent and the database query builder. However, you are free to define additional providers as needed for your application.
Don't worry if this all sounds confusing now! Many applications will never need to modify the default authentication configuration.
By default, Laravel includes an AppUserEloquent model in your app directory. This model may be used with the default Eloquent authentication driver. If your application is not using Eloquent, you may use the database authentication driver which uses the Laravel query builder.
When building the database schema for the AppUser model, make sure the password column is at least 60 characters in length. Maintaining the default string column length of 255 characters would be a good choice.
Also, you should verify that your users (or equivalent) table contains a nullable, string remember_token column of 100 characters. This column will be used to store a token for users that select the 'remember me' option when logging into your application.
Laravel's laravel/ui package provides a quick way to scaffold all of the routes and views you need for authentication using a few simple commands:
This command should be used on fresh applications and will install a layout view, registration and login views, as well as routes for all authentication end-points. A HomeController will also be generated to handle post-login requests to your application's dashboard.
The laravel/ui package also generates several pre-built authentication controllers, which are located in the AppHttpControllersAuth namespace. The RegisterController handles new user registration, the LoginController handles authentication, the ForgotPasswordController handles e-mailing links for resetting passwords, and the ResetPasswordController contains the logic to reset passwords. Each of these controllers uses a trait to include their necessary methods. For many applications, you will not need to modify these controllers at all.
{tip} If your application doesn’t need registration, you may disable it by removing the newly created RegisterController and modifying your route declaration: Auth::routes(['register' => false]);.
If you are starting a brand new application and would like to include the authentication scaffolding, you may use the --auth directive when creating your application. This command will create a new application with all of the authentication scaffolding compiled and installed:
As mentioned in the previous section, the laravel/ui package's php artisan ui vue --auth command will create all of the views you need for authentication and place them in the resources/views/auth directory.
The ui command will also create a resources/views/layouts directory containing a base layout for your application. All of these views use the Bootstrap CSS framework, but you are free to customize them however you wish.
Now that you have routes and views setup for the included authentication controllers, you are ready to register and authenticate new users for your application! You may access your application in a browser since the authentication controllers already contain the logic (via their traits) to authenticate existing users and store new users in the database.
When a user is successfully authenticated, they will be redirected to the /home URI. You can customize the post-authentication redirect path using the HOME constant defined in your RouteServiceProvider:
If you need more robust customization of the response returned when a user is authenticated, Laravel provides an empty authenticated(Request $request, $user) method that may be overwritten if desired:
By default, Laravel uses the email field for authentication. If you would like to customize this, you may define a username method on your LoginController:
You may also customize the 'guard' that is used to authenticate and register users. To get started, define a guard method on your LoginController, RegisterController, and ResetPasswordController. The method should return a guard instance:
To modify the form fields that are required when a new user registers with your application, or to customize how new users are stored into your database, you may modify the RegisterController class. This class is responsible for validating and creating new users of your application.
The validator method of the RegisterController contains the validation rules for new users of the application. You are free to modify this method as you wish.
The create method of the RegisterController is responsible for creating new AppUser records in your database using the Eloquent ORM. You are free to modify this method according to the needs of your database.
You may access the authenticated user via the Auth facade:
Alternatively, once a user is authenticated, you may access the authenticated user via an IlluminateHttpRequest instance. Remember, type-hinted classes will automatically be injected into your controller methods:
To determine if the user is already logged into your application, you may use the check method on the Auth facade, which will return true if the user is authenticated:
{tip} Even though it is possible to determine if a user is authenticated using the check method, you will typically use a middleware to verify that the user is authenticated before allowing the user access to certain routes / controllers. To learn more about this, check out the documentation on protecting routes.
Route middleware can be used to only allow authenticated users to access a given route. Laravel ships with an auth middleware, which is defined at IlluminateAuthMiddlewareAuthenticate. Since this middleware is already registered in your HTTP kernel, all you need to do is attach the middleware to a route definition:
If you are using controllers, you may call the middleware method from the controller's constructor instead of attaching it in the route definition directly:
When the auth middleware detects an unauthorized user, it will redirect the user to the loginnamed route. You may modify this behavior by updating the redirectTo function in your app/Http/Middleware/Authenticate.php file:
When attaching the auth middleware to a route, you may also specify which guard should be used to authenticate the user. The guard specified should correspond to one of the keys in the guards array of your auth.php configuration file:
Sometimes, you may wish to require the user to confirm their password before accessing a specific area of your application. For example, you may require this before the user modifies any billing settings within the application.
To accomplish this, Laravel provides a password.confirm middleware. Attaching the password.confirm middleware to a route will redirect users to a screen where they need to confirm their password before they can continue:
After the user has successfully confirmed their password, the user is redirected to the route they originally tried to access. By default, after confirming their password, the user will not have to confirm their password again for three hours. You are free to customize the length of time before the user must re-confirm their password using the auth.password_timeout configuration option.
If you are using Laravel's built-in LoginController class, the IlluminateFoundationAuthThrottlesLogins trait will already be included in your controller. By default, the user will not be able to login for one minute if they fail to provide the correct credentials after several attempts. The throttling is unique to the user's username / e-mail address and their IP address.
Note that you are not required to use the authentication controllers included with Laravel. If you choose to remove these controllers, you will need to manage user authentication using the Laravel authentication classes directly. Don't worry, it's a cinch!
We will access Laravel's authentication services via the Authfacade, so we'll need to make sure to import the Auth facade at the top of the class. Next, let's check out the attempt method:
The attempt method accepts an array of key / value pairs as its first argument. The values in the array will be used to find the user in your database table. So, in the example above, the user will be retrieved by the value of the email column. If the user is found, the hashed password stored in the database will be compared with the password value passed to the method via the array. You should not hash the password specified as the password value, since the framework will automatically hash the value before comparing it to the hashed password in the database. If the two hashed passwords match an authenticated session will be started for the user.
The attempt method will return true if authentication was successful. Otherwise, false will be returned.
The intended method on the redirector will redirect the user to the URL they were attempting to access before being intercepted by the authentication middleware. A fallback URI may be given to this method in case the intended destination is not available.
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If you wish, you may also add extra conditions to the authentication query in addition to the user's e-mail and password. For example, we may verify that user is marked as 'active':
{note} In these examples, email is not a required option, it is merely used as an example. You should use whatever column name corresponds to a 'username' in your database.
You may specify which guard instance you would like to utilize using the guard method on the Auth facade. This allows you to manage authentication for separate parts of your application using entirely separate authenticatable models or user tables.
The guard name passed to the guard method should correspond to one of the guards configured in your auth.php configuration file:
To log users out of your application, you may use the logout method on the Auth facade. This will clear the authentication information in the user's session:
If you would like to provide 'remember me' functionality in your application, you may pass a boolean value as the second argument to the attempt method, which will keep the user authenticated indefinitely, or until they manually logout. Your users table must include the string remember_token column, which will be used to store the 'remember me' token.
{tip} If you are using the built-in LoginController that is shipped with Laravel, the proper logic to 'remember' users is already implemented by the traits used by the controller.
If you are 'remembering' users, you may use the viaRemember method to determine if the user was authenticated using the 'remember me' cookie:
If you need to log an existing user instance into your application, you may call the login method with the user instance. The given object must be an implementation of the IlluminateContractsAuthAuthenticatablecontract. The AppUser model included with Laravel already implements this interface:
You may specify the guard instance you would like to use:
To log a user into the application by their ID, you may use the loginUsingId method. This method accepts the primary key of the user you wish to authenticate:
You may use the once method to log a user into the application for a single request. No sessions or cookies will be utilized, which means this method may be helpful when building a stateless API:
HTTP Basic Authentication provides a quick way to authenticate users of your application without setting up a dedicated 'login' page. To get started, attach the auth.basicmiddleware to your route. The auth.basic middleware is included with the Laravel framework, so you do not need to define it:
Once the middleware has been attached to the route, you will automatically be prompted for credentials when accessing the route in your browser. By default, the auth.basic middleware will use the email column on the user record as the 'username'.
If you are using PHP FastCGI, HTTP Basic authentication may not work correctly out of the box. The following lines should be added to your .htaccess file:
You may also use HTTP Basic Authentication without setting a user identifier cookie in the session, which is particularly useful for API authentication. To do so, define a middleware that calls the onceBasic method. If no response is returned by the onceBasic method, the request may be passed further into the application:
Next, register the route middleware and attach it to a route:
To manually log users out of your application, you may use the logout method on the Auth facade. This will clear the authentication information in the user's session:
Laravel also provides a mechanism for invalidating and 'logging out' a user's sessions that are active on other devices without invalidating the session on their current device. This feature is typically utilized when a user is changing or updating their password and you would like to invalidate sessions on other devices while keeping the current device authenticated.
Before getting started, you should make sure that the IlluminateSessionMiddlewareAuthenticateSession middleware is present and un-commented in your app/Http/Kernel.php class' web middleware group:
Then, you may use the logoutOtherDevices method on the Auth facade. This method requires the user to provide their current password, which your application should accept through an input form:
When the logoutOtherDevices method is invoked, the user's other sessions will be invalidated entirely, meaning they will be 'logged out' of all guards they were previously authenticated by.
{note} When using the AuthenticateSession middleware in combination with a custom route name for the login route, you must override the unauthenticated method on your application's exception handler to properly redirect users to your login page.
You may define your own authentication guards using the extend method on the Auth facade. You should place this call to extend within a service provider. Since Laravel already ships with an AuthServiceProvider, we can place the code in that provider:
As you can see in the example above, the callback passed to the extend method should return an implementation of IlluminateContractsAuthGuard. This interface contains a few methods you will need to implement to define a custom guard. Once your custom guard has been defined, you may use this guard in the guards configuration of your auth.php configuration file:
The simplest way to implement a custom, HTTP request based authentication system is by using the Auth::viaRequest method. This method allows you to quickly define your authentication process using a single Closure.
To get started, call the Auth::viaRequest method within the boot method of your AuthServiceProvider. The viaRequest method accepts an authentication driver name as its first argument. This name can be any string that describes your custom guard. The second argument passed to the method should be a Closure that receives the incoming HTTP request and returns a user instance or, if authentication fails, null:
Once your custom authentication driver has been defined, you use it as a driver within guards configuration of your auth.php configuration file:
If you are not using a traditional relational database to store your users, you will need to extend Laravel with your own authentication user provider. We will use the provider method on the Auth facade to define a custom user provider:
After you have registered the provider using the provider method, you may switch to the new user provider in your auth.php configuration file. First, define a provider that uses your new driver:
Finally, you may use this provider in your guards configuration:
The IlluminateContractsAuthUserProvider implementations are only responsible for fetching a IlluminateContractsAuthAuthenticatable implementation out of a persistent storage system, such as MySQL, Riak, etc. These two interfaces allow the Laravel authentication mechanisms to continue functioning regardless of how the user data is stored or what type of class is used to represent it.
Let's take a look at the IlluminateContractsAuthUserProvider contract:
The retrieveById function typically receives a key representing the user, such as an auto-incrementing ID from a MySQL database. The Authenticatable implementation matching the ID should be retrieved and returned by the method.
The retrieveByToken function retrieves a user by their unique $identifier and 'remember me' $token, stored in a field remember_token. As with the previous method, the Authenticatable implementation should be returned.
The updateRememberToken method updates the $user field remember_token with the new $token. A fresh token is assigned on a successful 'remember me' login attempt or when the user is logging out.
The retrieveByCredentials method receives the array of credentials passed to the Auth::attempt method when attempting to sign into an application. The method should then 'query' the underlying persistent storage for the user matching those credentials. Typically, this method will run a query with a 'where' condition on $credentials['username']. The method should then return an implementation of Authenticatable. This method should not attempt to do any password validation or authentication.
The validateCredentials method should compare the given $user with the $credentials to authenticate the user. For example, this method should probably use Hash::check to compare the value of $user->getAuthPassword() to the value of $credentials['password']. This method should return true or false indicating on whether the password is valid.
Now that we have explored each of the methods on the UserProvider, let's take a look at the Authenticatable contract. Remember, the provider should return implementations of this interface from the retrieveById, retrieveByToken, and retrieveByCredentials methods:
This interface is simple. The getAuthIdentifierName method should return the name of the 'primary key' field of the user and the getAuthIdentifier method should return the 'primary key' of the user. In a MySQL back-end, again, this would be the auto-incrementing primary key. The getAuthPassword should return the user's hashed password. This interface allows the authentication system to work with any User class, regardless of what ORM or storage abstraction layer you are using. By default, Laravel includes a User class in the app directory which implements this interface, so you may consult this class for an implementation example.
Laravel raises a variety of events during the authentication process. You may attach listeners to these events in your EventServiceProvider: