/**
* constructor; sets up the Zend Acl object
*
* @return void
* @author Andy Bennett
*/
function __construct()
{
$this->acl = new Zend_Acl();
$this->conf = Kohana::config('acl.acl');
// initialise the roles from the list
foreach ($this->conf->roles as $role => $inherit) {
$this->acl->addRole(new Zend_Acl_Role($role));
}
// initialise the resources from the config
foreach ($this->conf->resources as $resource) {
$this->acl->add(new Zend_Acl_Resource($resource));
}
// initialise the resources from the config
foreach ($this->conf->allowed as $allowed) {
$r = isset($allowed['resource']) ? $allowed['resource'] : null;
$a = isset($allowed['actions']) ? $allowed['actions'] : null;
$this->acl->allow($allowed['role'], $r, $a);
}
// initialise the resources from the config
foreach ($this->conf->denied as $denied) {
$r = isset($denied['resource']) ? $denied['resource'] : null;
$a = isset($denied['actions']) ? $denied['actions'] : null;
$this->acl->deny($denied['role'], $r, $a);
}
// Singleton instance
self::$instance = $this;
}
/**
* Returns a singleton instance of acl.
*
* @return object
*/
public static function &instance()
{
if (!isset(self::$instance)) {
$class = __CLASS__;
self::$instance = new $class();
}
return self::$instance;
}
