Laravel 8: LDAP Login Succeeds, but redirected to login page

[t0mcat1337]

Hi everybody,

for hours I'm trying to implement LDAP Auth in a fresh setup Laravel 8 UI App without success.

I configured everything as described here:
https://ldaprecord.com/docs/laravel/v2/auth/plain/laravel-ui

After entering valid credentials in the LoginForm one can read this in the laravel.log:
[2021-05-11 16:10:57] local.INFO: LDAP (ldap://ldapURL:389) - Operation: Binding - Username:
[2021-05-11 16:10:57] local.INFO: LDAP (ldap://ldapURL:389) - Operation: Bound - Username:
[2021-05-11 16:10:57] local.INFO: LDAP (ldap://ldapURL:389) - Operation: Search - Base DN: - Filter: (&(objectclass=top)(objectclass=person)(objectclass=organizationalperson)(objectclass=inetorgperson)(cn=userID)) - Selected: (objectguid,*) - Time Elapsed: 149.85
[2021-05-11 16:10:57] local.INFO: User [userID] has been successfully discovered for authentication.
[2021-05-11 16:10:57] local.INFO: User [userID] is authenticating.
[2021-05-11 16:10:57] local.INFO: LDAP (ldap://ldapURL:389) - Operation: Attempting - Username: cn=userID,baseDN
[2021-05-11 16:10:57] local.INFO: LDAP (ldap://ldapURL:389) - Operation: Binding - Username: cn=userID,baseDN
[2021-05-11 16:10:57] local.INFO: LDAP (ldap://ldapURL:389) - Operation: Bound - Username: cn=userID,baseDN
[2021-05-11 16:10:57] local.INFO: LDAP (ldap://ldapURL:389) - Operation: Passed - Username: cn=userID,baseDN
[2021-05-11 16:10:57] local.INFO: LDAP (ldap://ldapURL:389) - Operation: Binding - Username:
[2021-05-11 16:10:57] local.INFO: LDAP (ldap://ldapURL:389) - Operation: Bound - Username:
[2021-05-11 16:10:57] local.INFO: User [userID] has successfully passed LDAP authentication.
[2021-05-11 16:10:57] local.INFO: User [userID] has successfully authenticated.

But then the LoginPage re-appears as if there was an error but no error message is shown. Obviously the HomeController redirects to it because the auth-middleware doesn't recognize the successful auth.

This is the code:
config/auth.php:

   [...]
    */

    'providers' => [
        // 'users' => [
        //     'driver' => 'eloquent',
        //     'model' => App\Models\User::class,
        // ],

        'users' => [
            'driver' => 'ldap',
            'model' => LdapRecord\Models\OpenLDAP\User::class,
            'rules' => [],
        ],
        // 'users' => [
        //     'driver' => 'database',
        //     'table' => 'users',
        // ],
    ],

    /*
[...]

LoginController:

<?php

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use App\Providers\RouteServiceProvider;
use Illuminate\Foundation\Auth\AuthenticatesUsers;
use Illuminate\Http\Request;

class LoginController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Login Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles authenticating users for the application and
    | redirecting them to your home screen. The controller uses a trait
    | to conveniently provide its functionality to your applications.
    |
    */

    use AuthenticatesUsers;

    /**
     * Where to redirect users after login.
     *
     * @var string
     */
    protected $redirectTo = RouteServiceProvider::HOME;

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('guest')->except('logout');
    }

    protected function credentials(Request $request)
    {
        return [
            'cn' => $request->user,
            'password' => $request->password,
        ];
    }

    public function username()
    {
        return 'user';
    }
}

HomeController.php:

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class HomeController extends Controller
{
    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
       $this->middleware('auth');
    }

    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Contracts\Support\Renderable
     */
    public function index()
    {

        return view('home');
    }
}

When commenting out "$this->middleware('auth');" in the HomeController::__construct() method, of course the Home - View appears, but dumping Auth::user() returns "null"...

Any hint what I'm doing wrong here?

[PaSch1]

Unfortunately I have the same behavior. :(

[PaSch1]

I think i did it. :) My GUID have a different syntax. With a return of true it works.

../vendor/directorytree/ldaprecord/src/Utilities.php
public static function isValidGuid($guid)
{
return true;
// return (bool) preg_match('/^([0-9a-fA-F]){8}(-([0-9a-fA-F]){4}){3}-([0-9a-fA-F]){12}$/', (string) $guid);
}