Yet Another LDAP CakePHP Plugin

CakePHP plugin for LDAP Authentication.

Requirements

This Plugin has the following requirements:

• CakePHP 2.2.0 or greater.
• PHP 5.3.0 or greater.

It could be work on lower versions of CakePHP or PHP

Installation

1. Set up your Auth environment

• Create your "users" table as specified in database scheme example. If you use Mysql basically is as it follows:

CREATE TABLE IF NOT EXISTS `groups` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(100) COLLATE utf8_unicode_ci NOT NULL,
  `created` datetime DEFAULT NULL,
  `modified` datetime DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB;


CREATE TABLE IF NOT EXISTS `users` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  `password` char(40) COLLATE utf8_unicode_ci DEFAULT NULL,
  `group_id` int(11) NOT NULL,
  `created` datetime DEFAULT NULL,
  `modified` datetime DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `username` (`username`)
) ENGINE=InnoDB;

• This plugin is designed to work exactly as CakePHP default auth component.

See: CakePHP: Simple Authentication and Authorization Application

2. Configure Auth in your AppController

This config is pretty much the same as CakePHP tutorials about Auth and ACL. It should look something like this:

App::uses('Controller', 'Controller');

class AppController extends Controller {

	public $components = array(
		'Acl',
		'Auth' => array(
			'authorize' => array(
				'Actions' => array('actionPath' => 'controllers')
			)
		),
		'Session',
	);

	public $helpers = array('Html', 'Form','Session');

	public function beforeFilter() {
		//Configure AuthComponent
		$this->Auth->loginAction = array(
			'plugin' => false, 
			'controller' => 'users',
			'action' => 'login'
			);
		$this->Auth->logoutRedirect = array(
			'plugin' => false, 
			'controller' => 'users',
			'action' => 'login'
			);
		$this->Auth->loginRedirect = '/';

		$this->Auth->authError = __('You are not authorized to access that location.');

		// If YALP not loaded then use Form Auth
		if (CakePlugin::loaded('YALP'))
			$this->Auth->authenticate = array('YALP.LDAP' => null);
		
		parent::beforeFilter();
	}
}

3. Download YALP

• Clone/Copy the files in this directory into app/Plugin/YALP. This can be done with the git submodule command

git submodule add https://github.com/jvalecillos/cakephp-yalp.git app/Plugin/YALP

4. Configure the plugin

• Ensure the plugin is loaded in app/Config/bootstrap.php:

CakePlugin::load('YALP', array('bootstrap' => true));

• Create a app/Config/ldap.php config file with correspondent LDAP values. E.g.:

$config['LDAP']['server'] = 'ldap://com.example:3268/DC=example';
$config['LDAP']['port'] = '3268';
$config['LDAP']['user'] = 'DOMAIN\ldap_user';
$config['LDAP']['password'] = 'password';
// Base DN for searching under
$config['LDAP']['base_dn'] = 'OU=Employees,DC=com,DC=example';
// This is an LDAP filter that will be used to look up user objects by username.
// %USERNAME% will be replaced by the username entered by the user.
// Therefore, you can do things like proxyAddresses lookup to find
// a user by any of their email addresses.
$config['LDAP']['user_filter'] = "(&(objectClass=User) (sAMAccountName=%USERNAME%))";
$config['LDAP']['user_wide_filter'] = "(& (objectClass=User) (| (sAMAccountName=%USERNAME%*) (givenName=%USERNAME%*) (sn=%USERNAME%*) ) )";
// Form fields - we're expecting a username and password,
// but the form data might call them e.g. 'email' and 'password'
$config['LDAP']['form_fields'] = array ('username' => 'username', 'password' => 'password');
// LDAP fields to retrieve by default
$config['LDAP']['ldap_attribs'] = array ('samaccountname','givenname', 'sn', 'mail', 'department');
// Database model for users
$config['LDAP']['db_model'] = "User";
// LDAP filter to look up for group membership
$config['LDAP']['group_filter'] = "(&(objectCategory=User) (memberOf=CN=%GROUPNAME%, OU=Common Groups,". $config['LDAP']['base_dn'] ."))";

• You could change LDAP filters as your need. Below is a link about Active Directory particular case.
• Please notice that in this case username and samaccountname (ldap attribute) correspond each other and are use for authentication.

See: Active Directory: LDAP Syntax Filters

Licence

MIT