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809 lines
27 KiB
809 lines
27 KiB
12 years ago
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<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\web;
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use yii\base\Component;
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/**
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* CWebUser represents the persistent state for a Web application user.
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*
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* CWebUser is used as an application component whose ID is 'user'.
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* Therefore, at any place one can access the user state via
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* <code>Yii::app()->user</code>.
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*
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* CWebUser should be used together with an {@link IUserIdentity identity}
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* which implements the actual authentication algorithm.
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*
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* A typical authentication process using CWebUser is as follows:
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* <ol>
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* <li>The user provides information needed for authentication.</li>
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* <li>An {@link IUserIdentity identity instance} is created with the user-provided information.</li>
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* <li>Call {@link IUserIdentity::authenticate} to check if the identity is valid.</li>
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* <li>If valid, call {@link CWebUser::login} to login the user, and
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* Redirect the user browser to {@link returnUrl}.</li>
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* <li>If not valid, retrieve the error code or message from the identity
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* instance and display it.</li>
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* </ol>
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*
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* The property {@link id} and {@link name} are both identifiers
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* for the user. The former is mainly used internally (e.g. primary key), while
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* the latter is for display purpose (e.g. username). The {@link id} property
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* is a unique identifier for a user that is persistent
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* during the whole user session. It can be a username, or something else,
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* depending on the implementation of the {@link IUserIdentity identity class}.
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*
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* Both {@link id} and {@link name} are persistent during the user session.
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* Besides, an identity may have additional persistent data which can
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* be accessed by calling {@link getState}.
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* Note, when {@link allowAutoLogin cookie-based authentication} is enabled,
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* all these persistent data will be stored in cookie. Therefore, do not
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* store password or other sensitive data in the persistent storage. Instead,
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* you should store them directly in session on the server side if needed.
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*
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* @property boolean $isGuest Whether the current application user is a guest.
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* @property mixed $id The unique identifier for the user. If null, it means the user is a guest.
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* @property string $name The user name. If the user is not logged in, this will be {@link guestName}.
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* @property string $returnUrl The URL that the user should be redirected to after login.
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* @property string $stateKeyPrefix A prefix for the name of the session variables storing user session data.
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* @property array $flashes Flash messages (key => message).
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @since 2.0
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*/
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class User extends Component
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{
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const FLASH_KEY_PREFIX = 'Yii.CWebUser.flash.';
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const FLASH_COUNTERS = 'Yii.CWebUser.flashcounters';
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const STATES_VAR = '__states';
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const AUTH_TIMEOUT_VAR = '__timeout';
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/**
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* @var boolean whether to enable cookie-based login. Defaults to false.
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*/
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public $allowAutoLogin = false;
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/**
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* @var string the name for a guest user. Defaults to 'Guest'.
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* This is used by {@link getName} when the current user is a guest (not authenticated).
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*/
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public $guestName = 'Guest';
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/**
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* @var string|array the URL for login. If using array, the first element should be
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* the route to the login action, and the rest name-value pairs are GET parameters
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* to construct the login URL (e.g. array('/site/login')). If this property is null,
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* a 403 HTTP exception will be raised instead.
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* @see CController::createUrl
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*/
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public $loginUrl = array('/site/login');
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/**
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* @var array the property values (in name-value pairs) used to initialize the identity cookie.
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* Any property of {@link CHttpCookie} may be initialized.
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* This property is effective only when {@link allowAutoLogin} is true.
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*/
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public $identityCookie;
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/**
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* @var integer timeout in seconds after which user is logged out if inactive.
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* If this property is not set, the user will be logged out after the current session expires
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* (c.f. {@link CHttpSession::timeout}).
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* @since 1.1.7
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*/
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public $authTimeout;
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/**
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* @var boolean whether to automatically renew the identity cookie each time a page is requested.
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* Defaults to false. This property is effective only when {@link allowAutoLogin} is true.
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* When this is false, the identity cookie will expire after the specified duration since the user
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* is initially logged in. When this is true, the identity cookie will expire after the specified duration
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* since the user visits the site the last time.
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* @see allowAutoLogin
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* @since 1.1.0
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*/
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public $autoRenewCookie = false;
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/**
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* @var boolean whether to automatically update the validity of flash messages.
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* Defaults to true, meaning flash messages will be valid only in the current and the next requests.
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* If this is set false, you will be responsible for ensuring a flash message is deleted after usage.
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* (This can be achieved by calling {@link getFlash} with the 3rd parameter being true).
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* @since 1.1.7
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*/
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public $autoUpdateFlash = true;
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/**
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* @var string value that will be echoed in case that user session has expired during an ajax call.
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* When a request is made and user session has expired, {@link loginRequired} redirects to {@link loginUrl} for login.
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* If that happens during an ajax call, the complete HTML login page is returned as the result of that ajax call. That could be
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* a problem if the ajax call expects the result to be a json array or a predefined string, as the login page is ignored in that case.
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* To solve this, set this property to the desired return value.
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*
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* If this property is set, this value will be returned as the result of the ajax call in case that the user session has expired.
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* @since 1.1.9
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* @see loginRequired
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*/
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public $loginRequiredAjaxResponse;
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private $_keyPrefix;
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private $_access = array();
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/**
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* PHP magic method.
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* This method is overriden so that persistent states can be accessed like properties.
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* @param string $name property name
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* @return mixed property value
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*/
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public function __get($name)
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{
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if ($this->hasState($name)) {
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return $this->getState($name);
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} else {
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return parent::__get($name);
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}
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}
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/**
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* PHP magic method.
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* This method is overriden so that persistent states can be set like properties.
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* @param string $name property name
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* @param mixed $value property value
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*/
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public function __set($name, $value)
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{
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if ($this->hasState($name)) {
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$this->setState($name, $value);
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} else {
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parent::__set($name, $value);
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}
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}
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/**
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* PHP magic method.
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* This method is overriden so that persistent states can also be checked for null value.
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* @param string $name property name
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* @return boolean
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*/
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public function __isset($name)
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{
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if ($this->hasState($name)) {
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return $this->getState($name) !== null;
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} else {
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return parent::__isset($name);
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}
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}
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/**
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* PHP magic method.
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* This method is overriden so that persistent states can also be unset.
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* @param string $name property name
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* @throws CException if the property is read only.
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*/
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public function __unset($name)
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{
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if ($this->hasState($name)) {
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$this->setState($name, null);
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} else {
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parent::__unset($name);
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}
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}
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/**
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* Initializes the application component.
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* This method overrides the parent implementation by starting session,
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* performing cookie-based authentication if enabled, and updating the flash variables.
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*/
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public function init()
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{
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parent::init();
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Yii::app()->getSession()->open();
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if ($this->getIsGuest() && $this->allowAutoLogin) {
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$this->restoreFromCookie();
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} elseif ($this->autoRenewCookie && $this->allowAutoLogin) {
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$this->renewCookie();
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}
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if ($this->autoUpdateFlash) {
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$this->updateFlash();
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}
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$this->updateAuthStatus();
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}
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/**
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* Logs in a user.
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*
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* The user identity information will be saved in storage that is
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* persistent during the user session. By default, the storage is simply
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* the session storage. If the duration parameter is greater than 0,
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* a cookie will be sent to prepare for cookie-based login in future.
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*
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* Note, you have to set {@link allowAutoLogin} to true
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* if you want to allow user to be authenticated based on the cookie information.
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*
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* @param IUserIdentity $identity the user identity (which should already be authenticated)
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* @param integer $duration number of seconds that the user can remain in logged-in status. Defaults to 0, meaning login till the user closes the browser.
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* If greater than 0, cookie-based login will be used. In this case, {@link allowAutoLogin}
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* must be set true, otherwise an exception will be thrown.
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* @return boolean whether the user is logged in
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*/
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public function login($identity, $duration = 0)
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{
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$id = $identity->getId();
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$states = $identity->getPersistentStates();
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if ($this->beforeLogin($id, $states, false)) {
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$this->changeIdentity($id, $identity->getName(), $states);
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if ($duration > 0) {
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if ($this->allowAutoLogin) {
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$this->saveToCookie($duration);
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} else {
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throw new CException(Yii::t('yii', '{class}.allowAutoLogin must be set true in order to use cookie-based authentication.',
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array('{class}' => get_class($this))));
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}
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}
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$this->afterLogin(false);
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}
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return !$this->getIsGuest();
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}
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/**
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* Logs out the current user.
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* This will remove authentication-related session data.
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* If the parameter is true, the whole session will be destroyed as well.
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* @param boolean $destroySession whether to destroy the whole session. Defaults to true. If false,
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* then {@link clearStates} will be called, which removes only the data stored via {@link setState}.
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*/
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public function logout($destroySession = true)
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{
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if ($this->beforeLogout()) {
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if ($this->allowAutoLogin) {
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Yii::app()->getRequest()->getCookies()->remove($this->getStateKeyPrefix());
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if ($this->identityCookie !== null) {
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$cookie = $this->createIdentityCookie($this->getStateKeyPrefix());
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$cookie->value = null;
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$cookie->expire = 0;
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Yii::app()->getRequest()->getCookies()->add($cookie->name, $cookie);
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}
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}
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if ($destroySession) {
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Yii::app()->getSession()->destroy();
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} else {
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$this->clearStates();
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}
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$this->_access = array();
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$this->afterLogout();
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}
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}
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/**
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* Returns a value indicating whether the user is a guest (not authenticated).
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* @return boolean whether the current application user is a guest.
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*/
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public function getIsGuest()
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{
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return $this->getState('__id') === null;
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}
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/**
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* Returns a value that uniquely represents the user.
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* @return mixed the unique identifier for the user. If null, it means the user is a guest.
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*/
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public function getId()
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{
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return $this->getState('__id');
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}
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/**
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* @param mixed $value the unique identifier for the user. If null, it means the user is a guest.
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*/
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public function setId($value)
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{
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$this->setState('__id', $value);
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}
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/**
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* Returns the unique identifier for the user (e.g. username).
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* This is the unique identifier that is mainly used for display purpose.
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* @return string the user name. If the user is not logged in, this will be {@link guestName}.
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*/
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public function getName()
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{
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if (($name = $this->getState('__name')) !== null) {
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return $name;
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} else {
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return $this->guestName;
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}
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}
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/**
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* Sets the unique identifier for the user (e.g. username).
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* @param string $value the user name.
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* @see getName
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*/
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public function setName($value)
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{
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$this->setState('__name', $value);
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}
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/**
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* Returns the URL that the user should be redirected to after successful login.
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* This property is usually used by the login action. If the login is successful,
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* the action should read this property and use it to redirect the user browser.
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* @param string $defaultUrl the default return URL in case it was not set previously. If this is null,
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* the application entry URL will be considered as the default return URL.
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* @return string the URL that the user should be redirected to after login.
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* @see loginRequired
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*/
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public function getReturnUrl($defaultUrl = null)
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{
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if ($defaultUrl === null) {
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$defaultReturnUrl = Yii::app()->getUrlManager()->showScriptName ? Yii::app()->getRequest()->getScriptUrl() : Yii::app()->getRequest()->getBaseUrl() . '/';
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} else {
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$defaultReturnUrl = CHtml::normalizeUrl($defaultUrl);
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}
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return $this->getState('__returnUrl', $defaultReturnUrl);
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}
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/**
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* @param string $value the URL that the user should be redirected to after login.
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*/
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public function setReturnUrl($value)
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{
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$this->setState('__returnUrl', $value);
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}
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/**
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* Redirects the user browser to the login page.
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* Before the redirection, the current URL (if it's not an AJAX url) will be
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* kept in {@link returnUrl} so that the user browser may be redirected back
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* to the current page after successful login. Make sure you set {@link loginUrl}
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* so that the user browser can be redirected to the specified login URL after
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* calling this method.
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* After calling this method, the current request processing will be terminated.
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*/
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||
|
|
public function loginRequired()
|
||
|
|
{
|
||
|
|
$app = Yii::app();
|
||
|
|
$request = $app->getRequest();
|
||
|
|
|
||
|
|
if (!$request->getIsAjaxRequest()) {
|
||
|
|
$this->setReturnUrl($request->getUrl());
|
||
|
|
} elseif (isset($this->loginRequiredAjaxResponse)) {
|
||
|
|
echo $this->loginRequiredAjaxResponse;
|
||
|
|
Yii::app()->end();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (($url = $this->loginUrl) !== null) {
|
||
|
|
if (is_array($url)) {
|
||
|
|
$route = isset($url[0]) ? $url[0] : $app->defaultController;
|
||
|
|
$url = $app->createUrl($route, array_splice($url, 1));
|
||
|
|
}
|
||
|
|
$request->redirect($url);
|
||
|
|
} else {
|
||
|
|
throw new CHttpException(403, Yii::t('yii', 'Login Required'));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This method is called before logging in a user.
|
||
|
|
* You may override this method to provide additional security check.
|
||
|
|
* For example, when the login is cookie-based, you may want to verify
|
||
|
|
* that the user ID together with a random token in the states can be found
|
||
|
|
* in the database. This will prevent hackers from faking arbitrary
|
||
|
|
* identity cookies even if they crack down the server private key.
|
||
|
|
* @param mixed $id the user ID. This is the same as returned by {@link getId()}.
|
||
|
|
* @param array $states a set of name-value pairs that are provided by the user identity.
|
||
|
|
* @param boolean $fromCookie whether the login is based on cookie
|
||
|
|
* @return boolean whether the user should be logged in
|
||
|
|
* @since 1.1.3
|
||
|
|
*/
|
||
|
|
protected function beforeLogin($id, $states, $fromCookie)
|
||
|
|
{
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This method is called after the user is successfully logged in.
|
||
|
|
* You may override this method to do some postprocessing (e.g. log the user
|
||
|
|
* login IP and time; load the user permission information).
|
||
|
|
* @param boolean $fromCookie whether the login is based on cookie.
|
||
|
|
* @since 1.1.3
|
||
|
|
*/
|
||
|
|
protected function afterLogin($fromCookie)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This method is invoked when calling {@link logout} to log out a user.
|
||
|
|
* If this method return false, the logout action will be cancelled.
|
||
|
|
* You may override this method to provide additional check before
|
||
|
|
* logging out a user.
|
||
|
|
* @return boolean whether to log out the user
|
||
|
|
* @since 1.1.3
|
||
|
|
*/
|
||
|
|
protected function beforeLogout()
|
||
|
|
{
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This method is invoked right after a user is logged out.
|
||
|
|
* You may override this method to do some extra cleanup work for the user.
|
||
|
|
* @since 1.1.3
|
||
|
|
*/
|
||
|
|
protected function afterLogout()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Populates the current user object with the information obtained from cookie.
|
||
|
|
* This method is used when automatic login ({@link allowAutoLogin}) is enabled.
|
||
|
|
* The user identity information is recovered from cookie.
|
||
|
|
* Sufficient security measures are used to prevent cookie data from being tampered.
|
||
|
|
* @see saveToCookie
|
||
|
|
*/
|
||
|
|
protected function restoreFromCookie()
|
||
|
|
{
|
||
|
|
$app = Yii::app();
|
||
|
|
$request = $app->getRequest();
|
||
|
|
$cookie = $request->getCookies()->itemAt($this->getStateKeyPrefix());
|
||
|
|
if ($cookie && !empty($cookie->value) && is_string($cookie->value) && ($data = $app->getSecurityManager()->validateData($cookie->value)) !== false) {
|
||
|
|
$data = @unserialize($data);
|
||
|
|
if (is_array($data) && isset($data[0], $data[1], $data[2], $data[3])) {
|
||
|
|
list($id, $name, $duration, $states) = $data;
|
||
|
|
if ($this->beforeLogin($id, $states, true)) {
|
||
|
|
$this->changeIdentity($id, $name, $states);
|
||
|
|
if ($this->autoRenewCookie) {
|
||
|
|
$cookie->expire = time() + $duration;
|
||
|
|
$request->getCookies()->add($cookie->name, $cookie);
|
||
|
|
}
|
||
|
|
$this->afterLogin(true);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Renews the identity cookie.
|
||
|
|
* This method will set the expiration time of the identity cookie to be the current time
|
||
|
|
* plus the originally specified cookie duration.
|
||
|
|
* @since 1.1.3
|
||
|
|
*/
|
||
|
|
protected function renewCookie()
|
||
|
|
{
|
||
|
|
$request = Yii::app()->getRequest();
|
||
|
|
$cookies = $request->getCookies();
|
||
|
|
$cookie = $cookies->itemAt($this->getStateKeyPrefix());
|
||
|
|
if ($cookie && !empty($cookie->value) && ($data = Yii::app()->getSecurityManager()->validateData($cookie->value)) !== false) {
|
||
|
|
$data = @unserialize($data);
|
||
|
|
if (is_array($data) && isset($data[0], $data[1], $data[2], $data[3])) {
|
||
|
|
$cookie->expire = time() + $data[2];
|
||
|
|
$cookies->add($cookie->name, $cookie);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Saves necessary user data into a cookie.
|
||
|
|
* This method is used when automatic login ({@link allowAutoLogin}) is enabled.
|
||
|
|
* This method saves user ID, username, other identity states and a validation key to cookie.
|
||
|
|
* These information are used to do authentication next time when user visits the application.
|
||
|
|
* @param integer $duration number of seconds that the user can remain in logged-in status. Defaults to 0, meaning login till the user closes the browser.
|
||
|
|
* @see restoreFromCookie
|
||
|
|
*/
|
||
|
|
protected function saveToCookie($duration)
|
||
|
|
{
|
||
|
|
$app = Yii::app();
|
||
|
|
$cookie = $this->createIdentityCookie($this->getStateKeyPrefix());
|
||
|
|
$cookie->expire = time() + $duration;
|
||
|
|
$data = array(
|
||
|
|
$this->getId(),
|
||
|
|
$this->getName(),
|
||
|
|
$duration,
|
||
|
|
$this->saveIdentityStates(),
|
||
|
|
);
|
||
|
|
$cookie->value = $app->getSecurityManager()->hashData(serialize($data));
|
||
|
|
$app->getRequest()->getCookies()->add($cookie->name, $cookie);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a cookie to store identity information.
|
||
|
|
* @param string $name the cookie name
|
||
|
|
* @return CHttpCookie the cookie used to store identity information
|
||
|
|
*/
|
||
|
|
protected function createIdentityCookie($name)
|
||
|
|
{
|
||
|
|
$cookie = new CHttpCookie($name, '');
|
||
|
|
if (is_array($this->identityCookie)) {
|
||
|
|
foreach ($this->identityCookie as $name => $value) {
|
||
|
|
$cookie->$name = $value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $cookie;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @return string a prefix for the name of the session variables storing user session data.
|
||
|
|
*/
|
||
|
|
public function getStateKeyPrefix()
|
||
|
|
{
|
||
|
|
if ($this->_keyPrefix !== null) {
|
||
|
|
return $this->_keyPrefix;
|
||
|
|
} else {
|
||
|
|
return $this->_keyPrefix = md5('Yii.' . get_class($this) . '.' . Yii::app()->getId());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param string $value a prefix for the name of the session variables storing user session data.
|
||
|
|
*/
|
||
|
|
public function setStateKeyPrefix($value)
|
||
|
|
{
|
||
|
|
$this->_keyPrefix = $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the value of a variable that is stored in user session.
|
||
|
|
*
|
||
|
|
* This function is designed to be used by CWebUser descendant classes
|
||
|
|
* who want to store additional user information in user session.
|
||
|
|
* A variable, if stored in user session using {@link setState} can be
|
||
|
|
* retrieved back using this function.
|
||
|
|
*
|
||
|
|
* @param string $key variable name
|
||
|
|
* @param mixed $defaultValue default value
|
||
|
|
* @return mixed the value of the variable. If it doesn't exist in the session,
|
||
|
|
* the provided default value will be returned
|
||
|
|
* @see setState
|
||
|
|
*/
|
||
|
|
public function getState($key, $defaultValue = null)
|
||
|
|
{
|
||
|
|
$key = $this->getStateKeyPrefix() . $key;
|
||
|
|
return isset($_SESSION[$key]) ? $_SESSION[$key] : $defaultValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Stores a variable in user session.
|
||
|
|
*
|
||
|
|
* This function is designed to be used by CWebUser descendant classes
|
||
|
|
* who want to store additional user information in user session.
|
||
|
|
* By storing a variable using this function, the variable may be retrieved
|
||
|
|
* back later using {@link getState}. The variable will be persistent
|
||
|
|
* across page requests during a user session.
|
||
|
|
*
|
||
|
|
* @param string $key variable name
|
||
|
|
* @param mixed $value variable value
|
||
|
|
* @param mixed $defaultValue default value. If $value===$defaultValue, the variable will be
|
||
|
|
* removed from the session
|
||
|
|
* @see getState
|
||
|
|
*/
|
||
|
|
public function setState($key, $value, $defaultValue = null)
|
||
|
|
{
|
||
|
|
$key = $this->getStateKeyPrefix() . $key;
|
||
|
|
if ($value === $defaultValue) {
|
||
|
|
unset($_SESSION[$key]);
|
||
|
|
} else {
|
||
|
|
$_SESSION[$key] = $value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a value indicating whether there is a state of the specified name.
|
||
|
|
* @param string $key state name
|
||
|
|
* @return boolean whether there is a state of the specified name.
|
||
|
|
*/
|
||
|
|
public function hasState($key)
|
||
|
|
{
|
||
|
|
$key = $this->getStateKeyPrefix() . $key;
|
||
|
|
return isset($_SESSION[$key]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Clears all user identity information from persistent storage.
|
||
|
|
* This will remove the data stored via {@link setState}.
|
||
|
|
*/
|
||
|
|
public function clearStates()
|
||
|
|
{
|
||
|
|
$keys = array_keys($_SESSION);
|
||
|
|
$prefix = $this->getStateKeyPrefix();
|
||
|
|
$n = strlen($prefix);
|
||
|
|
foreach ($keys as $key) {
|
||
|
|
if (!strncmp($key, $prefix, $n)) {
|
||
|
|
unset($_SESSION[$key]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns all flash messages.
|
||
|
|
* This method is similar to {@link getFlash} except that it returns all
|
||
|
|
* currently available flash messages.
|
||
|
|
* @param boolean $delete whether to delete the flash messages after calling this method.
|
||
|
|
* @return array flash messages (key => message).
|
||
|
|
* @since 1.1.3
|
||
|
|
*/
|
||
|
|
public function getFlashes($delete = true)
|
||
|
|
{
|
||
|
|
$flashes = array();
|
||
|
|
$prefix = $this->getStateKeyPrefix() . self::FLASH_KEY_PREFIX;
|
||
|
|
$keys = array_keys($_SESSION);
|
||
|
|
$n = strlen($prefix);
|
||
|
|
foreach ($keys as $key) {
|
||
|
|
if (!strncmp($key, $prefix, $n)) {
|
||
|
|
$flashes[substr($key, $n)] = $_SESSION[$key];
|
||
|
|
if ($delete) {
|
||
|
|
unset($_SESSION[$key]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($delete) {
|
||
|
|
$this->setState(self::FLASH_COUNTERS, array());
|
||
|
|
}
|
||
|
|
return $flashes;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a flash message.
|
||
|
|
* A flash message is available only in the current and the next requests.
|
||
|
|
* @param string $key key identifying the flash message
|
||
|
|
* @param mixed $defaultValue value to be returned if the flash message is not available.
|
||
|
|
* @param boolean $delete whether to delete this flash message after accessing it.
|
||
|
|
* Defaults to true.
|
||
|
|
* @return mixed the message message
|
||
|
|
*/
|
||
|
|
public function getFlash($key, $defaultValue = null, $delete = true)
|
||
|
|
{
|
||
|
|
$value = $this->getState(self::FLASH_KEY_PREFIX . $key, $defaultValue);
|
||
|
|
if ($delete) {
|
||
|
|
$this->setFlash($key, null);
|
||
|
|
}
|
||
|
|
return $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Stores a flash message.
|
||
|
|
* A flash message is available only in the current and the next requests.
|
||
|
|
* @param string $key key identifying the flash message
|
||
|
|
* @param mixed $value flash message
|
||
|
|
* @param mixed $defaultValue if this value is the same as the flash message, the flash message
|
||
|
|
* will be removed. (Therefore, you can use setFlash('key',null) to remove a flash message.)
|
||
|
|
*/
|
||
|
|
public function setFlash($key, $value, $defaultValue = null)
|
||
|
|
{
|
||
|
|
$this->setState(self::FLASH_KEY_PREFIX . $key, $value, $defaultValue);
|
||
|
|
$counters = $this->getState(self::FLASH_COUNTERS, array());
|
||
|
|
if ($value === $defaultValue) {
|
||
|
|
unset($counters[$key]);
|
||
|
|
} else {
|
||
|
|
$counters[$key] = 0;
|
||
|
|
}
|
||
|
|
$this->setState(self::FLASH_COUNTERS, $counters, array());
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param string $key key identifying the flash message
|
||
|
|
* @return boolean whether the specified flash message exists
|
||
|
|
*/
|
||
|
|
public function hasFlash($key)
|
||
|
|
{
|
||
|
|
return $this->getFlash($key, null, false) !== null;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Changes the current user with the specified identity information.
|
||
|
|
* This method is called by {@link login} and {@link restoreFromCookie}
|
||
|
|
* when the current user needs to be populated with the corresponding
|
||
|
|
* identity information. Derived classes may override this method
|
||
|
|
* by retrieving additional user-related information. Make sure the
|
||
|
|
* parent implementation is called first.
|
||
|
|
* @param mixed $id a unique identifier for the user
|
||
|
|
* @param string $name the display name for the user
|
||
|
|
* @param array $states identity states
|
||
|
|
*/
|
||
|
|
protected function changeIdentity($id, $name, $states)
|
||
|
|
{
|
||
|
|
Yii::app()->getSession()->regenerateID(true);
|
||
|
|
$this->setId($id);
|
||
|
|
$this->setName($name);
|
||
|
|
$this->loadIdentityStates($states);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retrieves identity states from persistent storage and saves them as an array.
|
||
|
|
* @return array the identity states
|
||
|
|
*/
|
||
|
|
protected function saveIdentityStates()
|
||
|
|
{
|
||
|
|
$states = array();
|
||
|
|
foreach ($this->getState(self::STATES_VAR, array()) as $name => $dummy) {
|
||
|
|
$states[$name] = $this->getState($name);
|
||
|
|
}
|
||
|
|
return $states;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Loads identity states from an array and saves them to persistent storage.
|
||
|
|
* @param array $states the identity states
|
||
|
|
*/
|
||
|
|
protected function loadIdentityStates($states)
|
||
|
|
{
|
||
|
|
$names = array();
|
||
|
|
if (is_array($states)) {
|
||
|
|
foreach ($states as $name => $value) {
|
||
|
|
$this->setState($name, $value);
|
||
|
|
$names[$name] = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$this->setState(self::STATES_VAR, $names);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Updates the internal counters for flash messages.
|
||
|
|
* This method is internally used by {@link CWebApplication}
|
||
|
|
* to maintain the availability of flash messages.
|
||
|
|
*/
|
||
|
|
protected function updateFlash()
|
||
|
|
{
|
||
|
|
$counters = $this->getState(self::FLASH_COUNTERS);
|
||
|
|
if (!is_array($counters)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
foreach ($counters as $key => $count) {
|
||
|
|
if ($count) {
|
||
|
|
unset($counters[$key]);
|
||
|
|
$this->setState(self::FLASH_KEY_PREFIX . $key, null);
|
||
|
|
} else {
|
||
|
|
$counters[$key]++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$this->setState(self::FLASH_COUNTERS, $counters, array());
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Updates the authentication status according to {@link authTimeout}.
|
||
|
|
* If the user has been inactive for {@link authTimeout} seconds,
|
||
|
|
* he will be automatically logged out.
|
||
|
|
* @since 1.1.7
|
||
|
|
*/
|
||
|
|
protected function updateAuthStatus()
|
||
|
|
{
|
||
|
|
if ($this->authTimeout !== null && !$this->getIsGuest()) {
|
||
|
|
$expires = $this->getState(self::AUTH_TIMEOUT_VAR);
|
||
|
|
if ($expires !== null && $expires < time()) {
|
||
|
|
$this->logout(false);
|
||
|
|
} else {
|
||
|
|
$this->setState(self::AUTH_TIMEOUT_VAR, time() + $this->authTimeout);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Performs access check for this user.
|
||
|
|
* @param string $operation the name of the operation that need access check.
|
||
|
|
* @param array $params name-value pairs that would be passed to business rules associated
|
||
|
|
* with the tasks and roles assigned to the user.
|
||
|
|
* Since version 1.1.11 a param with name 'userId' is added to this array, which holds the value of
|
||
|
|
* {@link getId()} when {@link CDbAuthManager} or {@link CPhpAuthManager} is used.
|
||
|
|
* @param boolean $allowCaching whether to allow caching the result of access check.
|
||
|
|
* When this parameter
|
||
|
|
* is true (default), if the access check of an operation was performed before,
|
||
|
|
* its result will be directly returned when calling this method to check the same operation.
|
||
|
|
* If this parameter is false, this method will always call {@link CAuthManager::checkAccess}
|
||
|
|
* to obtain the up-to-date access result. Note that this caching is effective
|
||
|
|
* only within the same request and only works when <code>$params=array()</code>.
|
||
|
|
* @return boolean whether the operations can be performed by this user.
|
||
|
|
*/
|
||
|
|
public function checkAccess($operation, $params = array(), $allowCaching = true)
|
||
|
|
{
|
||
|
|
if ($allowCaching && $params === array() && isset($this->_access[$operation])) {
|
||
|
|
return $this->_access[$operation];
|
||
|
|
}
|
||
|
|
|
||
|
|
$access = Yii::app()->getAuthManager()->checkAccess($operation, $this->getId(), $params);
|
||
|
|
if ($allowCaching && $params === array()) {
|
||
|
|
$this->_access[$operation] = $access;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $access;
|
||
|
|
}
|
||
|
|
}
|