MISP/app/Model/AdminSetting.php

<?php
App::uses('AppModel', 'Model');

class AdminSetting extends AppModel
{
    public $useTable = 'admin_settings';

    public $actsAs = array(
        'SysLogLogable.SysLogLogable' => array(
            'userModel' => 'User',
            'userKey' => 'user_id',
            'change' => 'full'
        ),
        'Containable'
    );

    public $validate = array('setting' => 'isUnique');

    public function changeSetting($setting, $value = false)
    {
        $setting_object = $this->find('first', array(
            'conditions' => array('setting' => $setting)
        ));
        if (!empty($setting_object)) {
            $setting_object['AdminSetting']['value'] = $value;
        } else {
            $this->create();
            $setting_object['AdminSetting'] = array('setting' => $setting, 'value' => $value);
        }
        if ($this->save($setting_object)) {
            return true;
        } else {
            return $this->validationErrors;
        }
    }

    public function getSetting($setting)
    {
        $setting_object = $this->find('first', array(
                'conditions' => array('setting' => $setting)
        ));
        if (!empty($setting_object)) {
            return $setting_object['AdminSetting']['value'];
        } else {
            return false;
        }
    }
}