Plain Auth Configuration

Introduction

To configure a plain LDAP authentication provider, navigate to the providers array inside your config/auth.php file, and paste the following users provider:

You will have to remove/alter the default users provider, or create your own.

// config/auth.php

'providers' => [
    // ...

    'users' => [
        'driver' => 'ldap',
        'model' => LdapRecord\Models\ActiveDirectory\User::class,
        'rules' => [],
        'scopes' => [],
    ],
],

Important: If your application requires more than one LDAP connection, you must create a new provider for each connection.

This new provider must have its own unique model class which must use your alternate configured connection name using the $connection property.

In the scenario of having multiple LDAP connections, it may be helpful to namespace the LDAP models you create with the desired connection. For example:

App\Ldap\DomainAlpha\User

This will allow you to segregate scopes, rules and other classes to their relating connection.

Driver

The driver option must be ldap as this is what indicates to Laravel the proper authentication driver to use.

Model

The model option must be the class name of your LdapRecord model. This model will be used for fetching users from your directory.

Using your own model

If you're using an LDAP directory that is not directly supported by LdapRecord, you may publish your own model using the below command:

php artisan ldap:make:model User

The model will be created inside the app/Ldap directory.

Once created, insert the following interface and trait onto the model:

Interface:

Illuminate\Contracts\Auth\Authenticatable

Trait:

LdapRecord\Models\Concerns\CanAuthenticate

Finally, you must define a $guidKey property which will contain the name of the attribute your LDAP directory uses to store its unique identifier.

Important: Don't forget to also define the models $objectClasses.

namespace App\Ldap;

use LdapRecord\Models\Model;
use LdapRecord\Models\Concerns\CanAuthenticate;
use Illuminate\Contracts\Auth\Authenticatable;

class User extends Model implements Authenticatable
{
    use CanAuthenticate;

    public static array $objectClasses = ['...'];

    protected string $guidKey = 'uuid';
}

Rules

The rules option must be an array of authentication rule class names.

Overview

LDAP authentication rules give you the ability to allow or deny users from signing in to your application using a condition you would like to apply. These rules are executed after a user successfully passes LDAP authentication against your configured server.

Think of them as a final authorization gate before they are allowed in.

Authentication rules are never executed if a user fails LDAP authentication.

Creating Rules

Let's create an LDAP rule that only allows members of our domain Administrators group.

To create an authentication rule, call the ldap:make:rule command:

php artisan ldap:make:rule OnlyAdministrators

A rule will then be created in your applications app/Ldap/Rules directory:

<?php

namespace App\Ldap\Rules;

use LdapRecord\Laravel\Auth\Rule;
use LdapRecord\Models\Model as LdapRecord;
use Illuminate\Database\Eloquent\Model as Eloquent;

class OnlyAdministrators implements Rule
{
    /**
     * Check if the rule passes validation.
     */
    public function passes(LdapRecord $user, Eloquent $model = null): bool
    {
        //
    }
}

In the authentication rule, a $user property will be made available to us.

Now, we will update the passes method to check the LDAP users groups relationship to see if they are a member:

<?php

namespace App\Ldap\Rules;

use LdapRecord\Laravel\Auth\Rule;
use LdapRecord\Models\Model as LdapRecord;
use LdapRecord\Models\ActiveDirectory\Group;
use Illuminate\Database\Eloquent\Model as Eloquent;

class OnlyAdministrators implements Rule
{
    public function passes(LdapRecord $user, Eloquent $model = null): bool
    {
        $administrators = Group::find('cn=Administrators,dc=local,dc=com');

        return $user->groups()->recursive()->exists($administrators);
    }
}

We call the recursive method on the relationship to make sure we load groups of groups in case the user is not an immediate member of the Administrators group.

Once we have our rule defined, we will add it into our authentication provider in the config/auth.php file:

'providers' => [
    // ...

    'users' => [
        'driver' => 'ldap',
        'model' => LdapRecord\Models\ActiveDirectory\User::class,
        'rules' => [
            App\Ldap\Rules\OnlyAdministrators::class,
        ],
    ],
],

Now when you attempt to log in to your application with an LDAP user that successfully passes LDAP authentication, they will need to be a member of the Administrators group.

If you are caching your configuration, make sure you re-run config:cache to re-cache your modifications.

Scopes

The scopes option must be an array of LdapRecord scope class names.

Overview

The scopes inserted in this option allow you to apply query scopes to your configured model, only during authentication. This is option is useful for when you don't want to add global scopes to your configured model, but would like to scope the query used to retrieve users during import and authentication into your application.

Creating Scopes

Let's create an LDAP scope that scopes the authentication query to only return users that are located inside the Accounting Organizational Unit.

To create a new LDAP scope, call the ldap:make:scope command:

php artisan ldap:make:scope Accounting

A scope will then be created in your applications app/Ldap/Scopes directory:

<?php

namespace App\Ldap\Scopes;

use LdapRecord\Models\Model;
use LdapRecord\Models\Scope;
use LdapRecord\Query\Model\Builder;

class Accounting implements Scope
{
    /**
     * Apply the scope to the given query.
     */
    public function apply(Builder $query, Model $model): void
    {
        // ...
    }
}

Now let's update the apply method to only return users located inside the Accounting Organizational Unit:

We're using automatic base DN subsitution in query below by supplying {base} in the $query->in() method.

class Accounting implements Scope
{
    /**
     * Apply the scope to the given query.
     */
    public function apply(Builder $query, Model $model): void
    {
        $query->in('ou=Accounting,{base}');
    }
}

Once we have our scope defined, we will add it into our authentication provider in the config/auth.php file:

'providers' => [
    // ...

    'users' => [
        'driver' => 'ldap',
        'model' => LdapRecord\Models\ActiveDirectory\User::class,
        'rules' => [],
        'scopes' => [
            App\Ldap\Scopes\Accounting::class,
        ],
    ],
],

Now when you attempt to log in to your application with an LDAP user, that LDAP user must be located inside the Accounting Organizational Unit to be able to authenticate into your application.

If you are caching your configuration, make sure you re-run config:cache to re-cache your modifications.