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<?php |
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namespace PSFS\base; |
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use PSFS\base\types\helpers\RequestHelper; |
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use PSFS\base\types\helpers\ResponseHelper; |
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use PSFS\base\types\traits\SecureTrait; |
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use PSFS\base\types\traits\SingletonTrait; |
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/** |
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* Class Security |
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* @package PSFS |
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*/ |
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class Security |
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{ |
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// sha1('user') |
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const USER_ID_TOKEN = '12dea96fec20593566ab75692c9949596833adc9'; |
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// sha1('admin') |
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const MANAGER_ID_TOKEN = 'd033e22ae348aeb5660fc2140aec35850c4da997'; |
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// sha1('superadmin') |
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const ADMIN_ID_TOKEN = '889a3a791b3875cfae413574b53da4bb8a90d53e'; |
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// sha1('FLASHES') |
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const FLASH_MESSAGE_TOKEN = '4680c68435db1bfbf17c3fcc4f7b39d2c6122504'; |
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const LOGGED_USER_TOKEN = '__U_T_L__'; |
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use SecureTrait; |
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use SingletonTrait; |
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/** |
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* @var array $user |
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*/ |
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private $user = null; |
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/** |
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* @var array $admin |
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*/ |
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private $admin = null; |
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/** |
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* @var bool $authorized |
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*/ |
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private $authorized = FALSE; |
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/** |
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* @var bool $checked |
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*/ |
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private $checked = false; |
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/** |
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* @var array $session |
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*/ |
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protected $session; |
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/** |
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* Constructor por defecto |
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*/ |
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public function init() |
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{ |
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$this->initSession(); |
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$this->session = (is_null($_SESSION)) ? array() : $_SESSION; |
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if (NULL === $this->getSessionKey('__FLASH_CLEAR__')) { |
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$this->clearFlashes(); |
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$this->setSessionKey('__FLASH_CLEAR__', microtime(TRUE)); |
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} |
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$this->user = (array_key_exists(self::USER_ID_TOKEN, $this->session)) ? unserialize($this->session[self::USER_ID_TOKEN]) : NULL; |
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$this->admin = (array_key_exists(self::ADMIN_ID_TOKEN, $this->session)) ? unserialize($this->session[self::ADMIN_ID_TOKEN]) : NULL; |
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if (null === $this->admin) { |
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$this->checkAdmin(); |
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} |
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$this->setLoaded(true); |
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} |
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/** |
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* Initializator for SESSION |
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*/ |
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private function initSession() { |
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if (PHP_SESSION_NONE === session_status() && !headers_sent()) { |
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session_start(); |
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} |
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// Fix for phpunits |
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if(!isset($_SESSION)) { |
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$_SESSION = []; |
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} |
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} |
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/** |
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* Método estático que devuelve los perfiles de la plataforma |
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* @return array |
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*/ |
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public static function getProfiles() |
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{ |
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return array( |
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self::ADMIN_ID_TOKEN => _('Administrador'), |
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self::MANAGER_ID_TOKEN => _('Gestor'), |
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self::USER_ID_TOKEN => _('Usuario'), |
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); |
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} |
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/** |
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* Method that returns all the available profiles |
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* @return array |
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*/ |
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public function getAdminProfiles() |
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{ |
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return static::getProfiles(); |
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} |
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/** |
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* Método estático que devuelve los perfiles disponibles |
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* @return array |
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*/ |
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public static function getCleanProfiles() |
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{ |
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return array( |
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'__SUPER_ADMIN__' => self::ADMIN_ID_TOKEN, |
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'__ADMIN__' => self::MANAGER_ID_TOKEN, |
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'__USER__' => self::USER_ID_TOKEN, |
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); |
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} |
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/** |
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* Método estático que devuelve los perfiles disponibles |
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* @return array |
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*/ |
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public function getAdminCleanProfiles() |
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{ |
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return static::getCleanProfiles(); |
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} |
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/** |
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* Método que guarda los administradores |
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* |
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* @param array $user |
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* |
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* @return bool |
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*/ |
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public static function save($user) |
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{ |
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$saved = true; |
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try { |
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$admins = Cache::getInstance()->getDataFromFile(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json', Cache::JSONGZ, true) ?: []; |
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$admins[$user['username']]['hash'] = sha1($user['username'] . $user['password']); |
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$admins[$user['username']]['profile'] = $user['profile']; |
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Cache::getInstance()->storeData(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json', $admins, Cache::JSONGZ, true); |
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} catch(\Exception $e) { |
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Logger::log($e->getMessage(), LOG_ERR); |
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$saved = false; |
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} |
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return $saved; |
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} |
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/** |
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* Method to save a new admin user |
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* @param array $user |
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* @return bool |
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*/ |
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public function saveUser($user) |
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{ |
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$saved = false; |
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if (!empty($user)) { |
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$saved = static::save($user); |
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} |
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return $saved; |
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} |
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/** |
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* Servicio que actualiza los datos del usuario |
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* |
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* @param $user |
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*/ |
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public function updateUser($user) |
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{ |
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$this->user = $user; |
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} |
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/** |
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* @param $alias |
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* @param $profile |
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*/ |
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public function updateAdmin($alias, $profile) { |
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$this->admin = array( |
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'alias' => $alias, |
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'profile' => $profile, |
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); |
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$this->setSessionKey(self::ADMIN_ID_TOKEN, serialize($this->admin)); |
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} |
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/** |
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* Método que devuelve los administradores de una plataforma |
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* @return array|null |
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*/ |
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public function getAdmins() |
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{ |
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return Cache::getInstance()->getDataFromFile(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json', Cache::JSONGZ, true); |
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} |
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/** |
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* Método que devuelve si un usuario tiene privilegios para acceder a la zona de administración |
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* |
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* @param null $user |
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* @param null $pass |
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* @param boolean $force |
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* |
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* @return bool |
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* @throws \HttpException |
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*/ |
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public function checkAdmin($user = NULL, $pass = NULL, $force = false) |
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{ |
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Logger::log('Checking admin session'); |
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if ((!$this->authorized && !$this->checked) || $force) { |
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$admins = $this->getAdmins(); |
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if (null !== $admins) { |
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$request = Request::getInstance(); |
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//Sacamos las credenciales de la petición |
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$user = $user ?: $request->getServer('PHP_AUTH_USER'); |
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$pass = $pass ?: $request->getServer('PHP_AUTH_PW'); |
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if (NULL === $user || (array_key_exists($user, $admins) && empty($admins[$user]))) { |
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list($user, $pass) = $this->getAdminFromCookie(); |
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} |
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if (!empty($user) && !empty($admins[$user])) { |
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$auth = $admins[$user]['hash']; |
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$this->authorized = ($auth == sha1($user . $pass)); |
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if ($this->authorized) { |
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$this->updateAdmin($user , $admins[$user]['profile']); |
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ResponseHelper::setCookieHeaders([ |
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[ |
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'name' => $this->getHash(), |
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'value' => base64_encode("$user:$pass"), |
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'http' => true, |
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'domain' => '', |
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] |
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]); |
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$this->setSessionKey(self::LOGGED_USER_TOKEN, base64_encode("{$user}:{$pass}")); |
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} |
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} else { |
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$this->admin = null; |
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$this->setSessionKey(self::ADMIN_ID_TOKEN, null); |
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} |
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$this->checked = true; |
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} |
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} |
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return $this->authorized; |
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} |
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/** |
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* Método que obtiene el usuario y contraseña de la cookie de sesión de administración |
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* @return array |
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*/ |
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protected function getAdminFromCookie() |
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{ |
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$auth_cookie = Request::getInstance()->getCookie($this->getHash()); |
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$user = $pass = array(); |
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if (!empty($auth_cookie)) { |
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list($user, $pass) = explode(':', base64_decode($auth_cookie)); |
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} |
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return array($user, $pass); |
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} |
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/** |
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* Método privado para la generación del hash de la cookie de administración |
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* @return string |
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*/ |
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public function getHash() |
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{ |
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return substr(self::MANAGER_ID_TOKEN, 0, 8); |
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} |
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/** |
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* Método que devuelve el usuario logado |
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* @return array |
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*/ |
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public function getUser() |
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{ |
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return $this->user; |
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} |
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/** |
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* Método que devuelve el usuario administrador logado |
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* @return array |
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*/ |
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public function getAdmin() |
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{ |
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return $this->admin; |
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} |
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/** |
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* Método que calcula si se está logado o para acceder a administración |
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* @return bool |
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*/ |
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public function canAccessRestrictedAdmin() |
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{ |
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return null !== $this->admin && !preg_match('/^\/admin\/login/i', Request::requestUri()); |
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} |
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/** |
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* Servicio que devuelve una pantalla de error porque se necesita estar authenticado |
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* |
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* @param string|null $route |
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* |
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* @return string|null |
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*/ |
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public function notAuthorized($route) |
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{ |
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return Template::getInstance()->render('notauthorized.html.twig', array( |
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'route' => $route, |
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)); |
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} |
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/** |
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* Servicio que chequea si un usuario es super administrador o no |
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* @return bool |
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*/ |
314
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public function isSuperAdmin() |
315
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{ |
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$users = $this->getAdmins(); |
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$logged = $this->getAdmin(); |
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if ($users[$logged['alias']]) { |
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$security = $users[$logged['alias']]['profile']; |
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return self::ADMIN_ID_TOKEN === $security; |
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} |
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return FALSE; |
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} |
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326
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/** |
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* Servicio que devuelve un dato de sesión |
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* |
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* @param string $key |
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* |
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* @return mixed |
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*/ |
333
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6 |
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public function getSessionKey($key) |
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{ |
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6 |
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$data = NULL; |
336
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6 |
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if (array_key_exists($key, $this->session)) { |
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4 |
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$data = $this->session[$key]; |
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} |
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340
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return $data; |
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} |
342
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343
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/** |
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* Servicio que setea una variable de sesión |
345
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* |
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* @param string $key |
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* @param mixed $data |
348
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* |
349
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* @return Security |
350
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*/ |
351
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5 |
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public function setSessionKey($key, $data = NULL) |
352
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{ |
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5 |
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$this->session[$key] = $data; |
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return $this; |
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} |
357
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358
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/** |
359
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* Servicio que devuelve los mensajes flash de sesiones |
360
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* @return mixed |
361
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*/ |
362
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2 |
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public function getFlashes() |
363
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{ |
364
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2 |
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$flashes = $this->getSessionKey(self::FLASH_MESSAGE_TOKEN); |
365
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366
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2 |
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return (NULL !== $flashes) ? $flashes : array(); |
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} |
368
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369
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/** |
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* Servicio que limpia los mensajes flash |
371
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* @return $this |
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*/ |
373
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3 |
|
public function clearFlashes() |
374
|
|
|
{ |
375
|
3 |
|
$this->setSessionKey(self::FLASH_MESSAGE_TOKEN, NULL); |
376
|
|
|
|
377
|
3 |
|
return $this; |
378
|
|
|
} |
379
|
|
|
|
380
|
|
|
/** |
381
|
|
|
* Servicio que inserta un flash en sesión |
382
|
|
|
* |
383
|
|
|
* @param string $key |
384
|
|
|
* @param mixed $data |
385
|
|
|
*/ |
386
|
1 |
|
public function setFlash($key, $data = NULL) |
387
|
|
|
{ |
388
|
1 |
|
$flashes = $this->getFlashes(); |
389
|
1 |
|
if (!is_array($flashes)) { |
390
|
|
|
$flashes = []; |
391
|
|
|
} |
392
|
1 |
|
$flashes[$key] = $data; |
393
|
1 |
|
$this->setSessionKey(self::FLASH_MESSAGE_TOKEN, $flashes); |
394
|
1 |
|
} |
395
|
|
|
|
396
|
|
|
/** |
397
|
|
|
* Servicio que devuelve un flash de sesión |
398
|
|
|
* |
399
|
|
|
* @param string $key |
400
|
|
|
* |
401
|
|
|
* @return mixed |
402
|
|
|
*/ |
403
|
2 |
|
public function getFlash($key) |
404
|
|
|
{ |
405
|
2 |
|
$flashes = $this->getFlashes(); |
406
|
|
|
|
407
|
2 |
|
return (NULL !== $key && array_key_exists($key, $flashes)) ? $flashes[$key] : NULL; |
408
|
|
|
} |
409
|
|
|
|
410
|
|
|
/** |
411
|
|
|
* Servicio que actualiza |
412
|
|
|
* |
413
|
|
|
* @param boolean $closeSession |
414
|
|
|
* |
415
|
|
|
* @return Security |
416
|
|
|
*/ |
417
|
2 |
|
public function updateSession($closeSession = FALSE) |
|
|
|
|
418
|
|
|
{ |
419
|
2 |
|
Logger::log('Update session'); |
420
|
2 |
|
$_SESSION = $this->session; |
421
|
2 |
|
$_SESSION[self::USER_ID_TOKEN] = serialize($this->user); |
422
|
2 |
|
$_SESSION[self::ADMIN_ID_TOKEN] = serialize($this->admin); |
423
|
2 |
|
if ($closeSession) { |
424
|
1 |
|
Logger::log('Close session'); |
425
|
1 |
|
@session_write_close(); |
426
|
1 |
|
@session_start(); |
427
|
|
|
} |
428
|
2 |
|
Logger::log('Session updated'); |
429
|
2 |
|
return $this; |
430
|
|
|
} |
431
|
|
|
|
432
|
|
|
/** |
433
|
|
|
* Servicio que limpia la sesión |
434
|
|
|
*/ |
435
|
1 |
|
public function closeSession() |
|
|
|
|
436
|
|
|
{ |
437
|
1 |
|
unset($_SESSION); |
438
|
1 |
|
@session_destroy(); |
439
|
1 |
|
@session_regenerate_id(TRUE); |
440
|
1 |
|
@session_start(); |
441
|
1 |
|
} |
442
|
|
|
|
443
|
|
|
} |
444
|
|
|
|
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: