BookStack/app/Providers/LdapUserProvider.php

<?php

namespace BookStack\Providers;


use BookStack\User;
use Illuminate\Contracts\Auth\Authenticatable;
use Illuminate\Contracts\Auth\UserProvider;

class LdapUserProvider implements UserProvider
{

    /**
     * The user model.
     *
     * @var string
     */
    protected $model;


    /**
     * LdapUserProvider constructor.
     * @param $model
     */
    public function __construct($model)
    {
        $this->model = $model;
    }

    /**
     * Create a new instance of the model.
     *
     * @return \Illuminate\Database\Eloquent\Model
     */
    public function createModel()
    {
        $class = '\\'.ltrim($this->model, '\\');

        return new $class;
    }


    /**
     * Retrieve a user by their unique identifier.
     *
     * @param  mixed $identifier
     * @return \Illuminate\Contracts\Auth\Authenticatable|null
     */
    public function retrieveById($identifier)
    {
        return $this->createModel()->newQuery()->find($identifier);
    }

    /**
     * Retrieve a user by their unique identifier and "remember me" token.
     *
     * @param  mixed  $identifier
     * @param  string  $token
     * @return \Illuminate\Contracts\Auth\Authenticatable|null
     */
    public function retrieveByToken($identifier, $token)
    {
        $model = $this->createModel();

        return $model->newQuery()
            ->where($model->getAuthIdentifierName(), $identifier)
            ->where($model->getRememberTokenName(), $token)
            ->first();
    }


    /**
     * Update the "remember me" token for the given user in storage.
     *
     * @param  \Illuminate\Contracts\Auth\Authenticatable $user
     * @param  string                                     $token
     * @return void
     */
    public function updateRememberToken(Authenticatable $user, $token)
    {
        $user->setRememberToken($token);

        $user->save();
    }

    /**
     * Retrieve a user by the given credentials.
     *
     * @param  array $credentials
     * @return \Illuminate\Contracts\Auth\Authenticatable|null
     */
    public function retrieveByCredentials(array $credentials)
    {
        // TODO: Implement retrieveByCredentials() method.

        // Get user via LDAP

        // Search current user base by looking up a uid

        // If not exists create a new user instance with attached role
        // but do not store it in the database yet

        //
    }

    /**
     * Validate a user against the given credentials.
     *
     * @param  \Illuminate\Contracts\Auth\Authenticatable $user
     * @param  array                                      $credentials
     * @return bool
     */
    public function validateCredentials(Authenticatable $user, array $credentials)
    {
        // TODO: Implement validateCredentials() method.
    }
}