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https://github.com/kamilwylegala/cakephp2-php8.git
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c7d2c7bacd
git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@5711 3807eeeb-6ff5-0310-8944-8be069107fe0
825 lines
24 KiB
PHP
825 lines
24 KiB
PHP
<?php
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/* SVN FILE: $Id$ */
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/**
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* Authentication component
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*
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* Manages user logins and permissions.
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*
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* PHP versions 4 and 5
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*
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* CakePHP(tm) : Rapid Development Framework <http://www.cakephp.org/>
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* Copyright 2005-2007, Cake Software Foundation, Inc.
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* 1785 E. Sahara Avenue, Suite 490-204
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* Las Vegas, Nevada 89104
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @filesource
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* @copyright Copyright 2005-2007, Cake Software Foundation, Inc.
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* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
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* @package cake
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* @subpackage cake.cake.libs.controller.components
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* @since CakePHP(tm) v 0.10.0.1076
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* @version $Revision$
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* @modifiedby $LastChangedBy$
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* @lastmodified $Date$
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License
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*/
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uses('set', 'security');
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/**
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* Authentication control component class
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*
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* Binds access control with user authentication and session management.
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*
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* @package cake
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* @subpackage cake.cake.libs.controller.components
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*/
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class AuthComponent extends Object {
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/**
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* Maintains current user login state.
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*
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* @var boolean
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* @access private
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*/
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var $_loggedIn = false;
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/**
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* Other components utilized by AuthComponent
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*
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* @var array
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* @access public
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*/
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var $components = array('Session', 'RequestHandler');
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/**
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* The name of the component to use for Authorization or set this to
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* 'controller' will validate against Controller::isAuthorized()
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* 'actions' will validate Controller::action against an AclComponent::check()
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* 'crud' will validate mapActions against an AclComponent::check()
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* array('model'=> 'name'); will validate mapActions against model $name::isAuthorize(user, controller, mapAction)
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* 'object' will validate Controller::action against object::isAuthorized(user, controller, action)
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*
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* @var string
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* @access public
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*/
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var $authorize = false;
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/**
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* The name of an optional view element to render when an Ajax request is made
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* with an invalid or expired session
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*
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* @var string
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* @access public
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*/
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var $ajaxLogin = null;
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/**
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* The name of the model that represents users which will be authenticated. Defaults to 'User'.
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*
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* @var string
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* @access public
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*/
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var $userModel = 'User';
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/**
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* Additional query conditions to use when looking up and authenticating users,
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* i.e. array('User.is_active' => 1).
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*
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* @var array
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* @access public
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*/
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var $userScope = array();
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/**
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* Allows you to specify non-default login name and password fields used in
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* $userModel, i.e. array('username' => 'login_name', 'password' => 'passwd').
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*
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* @var array
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* @access public
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*/
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var $fields = array('username' => 'username', 'password' => 'password');
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/**
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* the hash function to use, options: sha1, sha256, md5
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*
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* @var string
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* @access public
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*/
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var $hash = 'sha1';
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/**
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* The session key name where the record of the current user is stored. If
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* unspecified, it will be "Auth.{$userModel name}".
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*
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* @var string
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* @access public
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*/
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var $sessionKey = null;
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/**
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* If using action-based access control, this defines how the paths to action
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* ACO nodes is computed. If, for example, all controller nodes are nested
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* under an ACO node named 'Controllers', $actionPath should be set to
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* "Controllers/".
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*
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* @var string
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* @access public
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*/
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var $actionPath = null;
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/**
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* A URL (defined as a string or array) to the controller action that handles
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* logins.
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*
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* @var mixed
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* @access public
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*/
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var $loginAction = null;
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/**
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* Normally, if a user is redirected to the $loginAction page, the location they
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* were redirected from will be stored in the session so that they can be
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* redirected back after a successful login. If this session value is not
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* set, the user will be redirected to the page specified in $loginRedirect.
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*
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* @var mixed
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* @access public
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*/
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var $loginRedirect = null;
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/**
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* The the default action to redirect to after the user is logged out. While AuthComponent does
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* not handle post-logout redirection, a redirect URL will be returned from AuthComponent::logout().
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* Defaults to AuthComponent::$loginAction.
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*
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* @var mixed
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* @access public
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* @see AuthComponent::$loginAction
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* @see AuthComponent::logout()
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*/
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var $logoutRedirect = null;
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/**
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* The name of model or model object, or any other object has an isAuthorized method.
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*
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* @var string
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* @access public
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*/
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var $object = null;
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/**
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* Error to display when user login fails. For security purposes, only one error is used for all
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* login failures, so as not to expose information on why the login failed.
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*
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* @var string
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* @access public
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*/
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var $loginError = 'Login failed. Invalid username or password.';
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/**
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* Error to display when user attempts to access an object or action to which they do not have
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* acccess.
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*
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* @var string
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* @access public
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*/
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var $authError = 'You are not authorized to access that location.';
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/**
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* Determines whether AuthComponent will automatically redirect and exit if login is successful.
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*
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* @var boolean
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* @access public
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*/
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var $autoRedirect = true;
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/**
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* Controller actions for which user validation is not required.
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*
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* @var array
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* @access public
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* @see AuthComponent::allow()
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*/
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var $allowedActions = array();
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/**
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* Maps actions to CRUD operations. Used for controller-based validation ($validate = 'controller').
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*
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* @var array
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* @access public
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* @see AuthComponent::mapActions()
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*/
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var $actionMap = array(
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'index' => 'read',
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'add' => 'create',
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'edit' => 'update',
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'view' => 'read',
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'remove' => 'delete'
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);
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/**
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* Form data from Controller::$data
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*
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* @var array
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* @access public
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*/
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var $data = array();
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/**
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* Parameter data from Controller::$params
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*
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* @var array
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* @access public
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*/
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var $params = array();
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/**
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* Initializes AuthComponent for use in the controller
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*
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* @access public
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* @param object $controller A reference to the instantiating controller object
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* @return void
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*/
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function initialize(&$controller) {
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$this->params = $controller->params;
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$crud = array('create', 'read', 'update', 'delete');
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$this->actionMap = am($this->actionMap, array_combine($crud, $crud));
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$admin = Configure::read('Routing.admin');
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if (!empty($admin)) {
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$this->actionMap = am($this->actionMap, array(
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$admin . '_index' => 'read',
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$admin . '_add' => 'create',
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$admin . '_edit' => 'update',
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$admin . '_view' => 'read',
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$admin . '_remove' => 'delete',
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$admin . '_create' => 'create',
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$admin . '_read' => 'read',
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$admin . '_update' => 'update',
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$admin . '_delete' => 'delete'
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));
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}
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if (Configure::read() > 0) {
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uses('debugger');
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Debugger::checkSessionKey();
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}
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}
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/**
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* Main execution method. Handles redirecting of invalid users, and processing
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* of login form data.
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*
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* @access public
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* @param object $controller A reference to the instantiating controller object
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* @return void
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*/
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function startup(&$controller) {
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if (low($controller->name) == 'app' || (low($controller->name) == 'tests' && Configure::read() > 0)) {
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return;
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}
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if ($this->allowedActions == array('*') || in_array($controller->action, $this->allowedActions)) {
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return false;
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}
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if (!$this->__setDefaults()) {
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return false;
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}
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$this->data = $controller->data = $this->hashPasswords($controller->data);
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if (!isset($controller->params['url']['url'])) {
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$url = '';
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} else {
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$url = $controller->params['url']['url'];
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}
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$this->loginAction = $this->_normalizeURL($this->loginAction);
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if ($this->loginAction == $this->_normalizeURL($url)) {
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if (empty($controller->data) || !isset($controller->data[$this->userModel])) {
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if (!$this->Session->check('Auth.redirect') && env('HTTP_REFERER')) {
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$this->Session->write('Auth.redirect', $controller->referer());
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}
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return false;
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}
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$data = array(
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$this->userModel . '.' . $this->fields['username'] => '= ' . $controller->data[$this->userModel][$this->fields['username']],
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$this->userModel . '.' . $this->fields['password'] => '= ' . $controller->data[$this->userModel][$this->fields['password']]
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);
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if ($this->login($data)) {
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if ($this->autoRedirect) {
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$controller->redirect($this->redirect(), null, true);
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}
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return true;
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} else {
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$this->Session->setFlash($this->loginError, 'default', array(), 'auth');
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unset($controller->data[$this->userModel][$this->fields['password']]);
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}
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return false;
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} else {
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if (!$this->user()) {
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if (!$this->RequestHandler->isAjax()) {
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$this->Session->setFlash($this->authError, 'default', array(), 'auth');
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$this->Session->write('Auth.redirect', $url);
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$controller->redirect($this->loginAction, null, true);
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return false;
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} elseif (!empty($this->ajaxLogin)) {
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$controller->viewPath = 'elements';
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$controller->render($this->ajaxLogin, 'ajax');
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exit();
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}
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}
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}
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if ($this->authorize) {
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extract($this->__authType());
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if ($type == 'controller') {
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if ($controller->isAuthorized()) {
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return true;
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}
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} else {
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switch ($type) {
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case 'crud':
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case 'actions':
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if (isset($controller->Acl)) {
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$this->Acl =& $controller->Acl;
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} else {
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trigger_error(__('Could not find AclComponent. Please include Acl in Controller::$components.', true), E_USER_WARNING);
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}
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break;
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case 'model':
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if (!isset($object)) {
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if (isset($controller->{$controller->modelClass}) && is_object($controller->{$controller->modelClass})) {
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$object = $controller->modelClass;
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} elseif (!empty($controller->uses) && isset($controller->{$controller->uses[0]}) && is_object($controller->{$controller->uses[0]})) {
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$object = $controller->uses[0];
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}
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}
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$type = array('model' => $object);
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break;
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default:
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break;
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}
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if ($this->isAuthorized($type)) {
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return true;
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}
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}
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$this->Session->setFlash($this->authError, 'default', array(), 'auth');
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$controller->redirect($controller->referer(), null, true);
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return false;
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} else {
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return true;
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}
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}
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/**
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* Attempts to introspect the correct values for object properties including
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* $userModel and $sessionKey.
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*
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* @access private
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* @param object $controller A reference to the instantiating controller object
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* @return void
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*/
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function __setDefaults() {
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if (empty($this->userModel)) {
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trigger_error(__('Could not find $userModel. Please set AuthComponent::$userModel in beforeFilter().', true), E_USER_WARNING);
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return false;
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}
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if (empty($this->loginAction)) {
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$this->loginAction = Router::url(array('controller'=> Inflector::underscore(Inflector::pluralize($this->userModel)), 'action'=>'login'));
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}
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if (empty($this->sessionKey)) {
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$this->sessionKey = 'Auth.' . $this->userModel;
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}
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if (empty($this->logoutRedirect)) {
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$this->logoutRedirect = $this->loginAction;
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}
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return true;
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}
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/**
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* Determines whether the given user is authorized to perform an action. The type of authorization
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* used is based on the value of AuthComponent::$authorize or the passed $type param.
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*
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* Types:
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* 'controller' will validate against Controller::isAuthorized()
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* 'actions' will validate Controller::action against an AclComponent::check()
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* 'crud' will validate mapActions against an AclComponent::check()
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* array('model'=> 'name'); will validate mapActions against model $name::isAuthorize(user, controller, mapAction)
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* 'object' will validate Controller::action against object::isAuthorized(user, controller, action)
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*
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* @access public
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* @param string $type
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* @param mixed $object object, model object, or model name
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* @param mixed $user The user to check the authorization of
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* @return boolean True if $user is authorized, otherwise false
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*/
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function isAuthorized($type = null, $object = null, $user = null) {
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if (empty($user) && !$this->user()) {
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return false;
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} elseif (empty($user)) {
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$user = $this->user();
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}
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extract($this->__authType($type));
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if (!$object) {
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$object = $this->object;
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}
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$valid = false;
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switch ($type) {
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case 'actions':
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$valid = $this->Acl->check($user, $this->action());
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break;
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case 'crud':
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$this->mapActions();
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if (!isset($this->actionMap[$this->params['action']])) {
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trigger_error(sprintf(__('Auth::startup() - Attempted access of un-mapped action "%s" in controller "%s"', true), $this->params['action'], $this->params['controller']), E_USER_WARNING);
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} else {
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$valid = $this->Acl->check($user, $this->action(':controller'), $this->actionMap[$this->params['action']]);
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}
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break;
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case 'model':
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$this->mapActions();
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$action = $this->params['action'];
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if(isset($this->actionMap[$action])) {
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$action = $this->actionMap[$action];
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}
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if (is_string($object)) {
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$object = $this->getModel($object);
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}
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case 'object':
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if (!isset($action)) {
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$action = $this->action(':action');
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}
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if (empty($object)) {
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trigger_error(sprintf(__('Could not find %s. Set AuthComponent::$object in beforeFilter() or pass a valid object', true), get_class($object)), E_USER_WARNING);
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return;
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}
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if (method_exists($object, 'isAuthorized')) {
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$valid = $object->isAuthorized($user, $this->action(':controller'), $action);
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} elseif ($object){
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trigger_error(sprintf(__('%s::isAuthorized() is not defined.', true), get_class($object)), E_USER_WARNING);
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}
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break;
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case null:
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case false:
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return true;
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break;
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default:
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trigger_error(__('Auth::isAuthorized() - $authorize is set to an incorrect value. Allowed settings are: "actions", "crud", "model" or null.', true), E_USER_WARNING);
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break;
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}
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return $valid;
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}
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/**
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*
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* @access private
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* @param string $auth
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* @return type, object, asssoc
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*/
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function __authType($auth = null) {
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if ($auth == null) {
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$auth = $this->authorize;
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}
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$object = null;
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if (is_array($auth)) {
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$type = key($auth);
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$object = $auth[$type];
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} else {
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$type = $auth;
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return compact('type');
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}
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return compact('type', 'object');
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}
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/**
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* Takes a list of actions in the current controller for which authentication is not required, or
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* no parameters to allow all actions.
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*
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* @access public
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* @param string $action Controller action name
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* @param string $action Controller action name
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* @param string ... etc.
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* @return void
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*/
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function allow() {
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$args = func_get_args();
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if (empty($args)) {
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$this->allowedActions = array('*');
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} else {
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$this->allowedActions = am($this->allowedActions, $args);
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}
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}
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/**
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* Removes items from the list of allowed actions.
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*
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* @access public
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* @param string $action Controller action name
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* @param string $action Controller action name
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* @param string ... etc.
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* @return void
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* @see AuthComponent::allow()
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*/
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function deny() {
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$args = func_get_args();
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foreach ($args as $arg) {
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$i = array_search($arg, $this->allowedActions);
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if (is_int($i)) {
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unset($this->allowedActions[$i]);
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}
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}
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$this->allowedActions = array_values($this->allowedActions);
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}
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/**
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* Maps action names to CRUD operations. Used for controller-based authentication.
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*
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* @param array $map
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* @access public
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* @return void
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*/
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function mapActions($map = array()) {
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$crud = array('create', 'read', 'update', 'delete');
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foreach ($map as $action => $type) {
|
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if (in_array($action, $crud) && is_array($type)) {
|
|
foreach ($type as $typedAction) {
|
|
$this->actionMap[$typedAction] = $action;
|
|
}
|
|
} else {
|
|
$this->actionMap[$action] = $type;
|
|
}
|
|
}
|
|
}
|
|
/**
|
|
* Manually log-in a user with the given parameter data. The $data provided can be any data
|
|
* structure used to identify a user in AuthComponent::identify(). If $data is empty or not
|
|
* specified, POST data from Controller::$data will be used automatically.
|
|
*
|
|
* After (if) login is successful, the user record is written to the session key specified in
|
|
* AuthComponent::$sessionKey.
|
|
*
|
|
* @access public
|
|
* @param mixed $data User object
|
|
* @return boolean True on login success, false on failure
|
|
*/
|
|
function login($data = null) {
|
|
$this->__setDefaults();
|
|
$this->_loggedIn = false;
|
|
|
|
if (empty($data)) {
|
|
$data = $this->data;
|
|
}
|
|
|
|
if ($user = $this->identify($data)) {
|
|
$this->Session->write($this->sessionKey, $user);
|
|
$this->_loggedIn = true;
|
|
}
|
|
return $this->_loggedIn;
|
|
}
|
|
/**
|
|
* Logs a user out, and returns the login action to redirect to.
|
|
*
|
|
* @access public
|
|
* @param mixed $url Optional URL to redirect the user to after logout
|
|
* @return string AuthComponent::$loginAction
|
|
* @see AuthComponent::$loginAction
|
|
*/
|
|
function logout() {
|
|
$this->__setDefaults();
|
|
$this->Session->del($this->sessionKey);
|
|
$this->Session->del('Auth.redirect');
|
|
$this->_loggedIn = false;
|
|
return $this->_normalizeURL($this->logoutRedirect);
|
|
}
|
|
/**
|
|
* Get the current user from the session.
|
|
*
|
|
* @access public
|
|
* @return array User record, or null if no user is logged in.
|
|
*/
|
|
function user($key = null) {
|
|
$this->__setDefaults();
|
|
if (!$this->Session->check($this->sessionKey)) {
|
|
return null;
|
|
}
|
|
|
|
if ($key == null) {
|
|
return array($this->userModel => $this->Session->read($this->sessionKey));
|
|
} else {
|
|
$user = $this->Session->read($this->sessionKey);
|
|
if (isset($user[$key])) {
|
|
return $user[$key];
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
/**
|
|
* If no parameter is passed, gets the authentication redirect URL.
|
|
*
|
|
* @param mixed $url Optional URL to write as the login redirect URL.
|
|
* @access public
|
|
* @return string Redirect URL
|
|
*/
|
|
function redirect($url = null) {
|
|
if (!is_null($url)) {
|
|
return $this->Session->write('Auth.redirect', $url);
|
|
}
|
|
if ($this->Session->check('Auth.redirect')) {
|
|
$redir = $this->Session->read('Auth.redirect');
|
|
$this->Session->delete('Auth.redirect');
|
|
|
|
if ($this->_normalizeURL($redir) == $this->loginAction) {
|
|
$redir = $this->loginRedirect;
|
|
}
|
|
} else {
|
|
$redir = $this->loginRedirect;
|
|
}
|
|
return $this->_normalizeURL($redir);
|
|
}
|
|
/**
|
|
* Validates a user against an abstract object.
|
|
*
|
|
* @access public
|
|
* @param mixed $object The object to validate the user against.
|
|
* @param mixed $user Optional. The identity of the user to be validated.
|
|
* Uses the current user session if none specified. For
|
|
* valid forms of identifying users, see
|
|
* AuthComponent::identify().
|
|
* @see AuthComponent::identify()
|
|
* @return boolean True if the user validates, false otherwise.
|
|
*/
|
|
function validate($object, $user = null, $action = null) {
|
|
if (empty($user)) {
|
|
$this->getModel();
|
|
$user = $this->user();
|
|
}
|
|
if (empty($user)) {
|
|
return false;
|
|
}
|
|
return $this->Acl->check($user, $object, $action);
|
|
}
|
|
/**
|
|
* Returns the path to the ACO node bound to a controller/action.
|
|
*
|
|
* @access public
|
|
* @param string $action Optional. The controller/action path to validate the
|
|
* user against. The current request action is used if
|
|
* none is specified.
|
|
* @return boolean ACO node path
|
|
*/
|
|
function action($action = ':controller/:action') {
|
|
return r(
|
|
array(':controller', ':action'),
|
|
array(Inflector::camelize($this->params['controller']), $this->params['action']),
|
|
$this->actionPath . $action
|
|
);
|
|
}
|
|
/**
|
|
* Returns a reference to the model object specified by $userModel, and attempts
|
|
* to load it if it is not found.
|
|
*
|
|
* @access public
|
|
* @return object A reference to a model object.
|
|
*/
|
|
function &getModel($name = null) {
|
|
$model = null;
|
|
if (!$name) {
|
|
$name = $this->userModel;
|
|
}
|
|
if (!ClassRegistry::isKeySet($name)) {
|
|
if (!loadModel(Inflector::underscore($name))) {
|
|
trigger_error(sprintf(__('Auth::getModel() - %s is not set or could not be found', true), $name), E_USER_WARNING);
|
|
return $model;
|
|
} else {
|
|
$model = new $name();
|
|
}
|
|
}
|
|
|
|
if (empty($model)) {
|
|
if (PHP5) {
|
|
$model = ClassRegistry::getObject($name);
|
|
} else {
|
|
$model =& ClassRegistry::getObject($name);
|
|
}
|
|
}
|
|
|
|
if (empty($model)) {
|
|
trigger_error(sprintf(__('Auth::getModel() - %s is not set or could not be found', true), $name), E_USER_WARNING);
|
|
return null;
|
|
}
|
|
|
|
return $model;
|
|
}
|
|
/**
|
|
* Identifies a user based on specific criteria.
|
|
*
|
|
* @access public
|
|
* @param mixed $user Optional. The identity of the user to be validated.
|
|
* Uses the current user session if none specified.
|
|
* @return array User record data, or null, if the user could not be identified.
|
|
*/
|
|
function identify($user = null) {
|
|
if (empty($user)) {
|
|
$user = $this->user();
|
|
if (empty($user)) {
|
|
return null;
|
|
}
|
|
} elseif (is_object($user) && is_a($user, 'Model')) {
|
|
if (!$user->exists()) {
|
|
return null;
|
|
}
|
|
$user = $user->read();
|
|
$user = $user[$this->userModel];
|
|
} elseif (is_array($user) && isset($user[$this->userModel])) {
|
|
$user = $user[$this->userModel];
|
|
}
|
|
|
|
if (is_array($user) && (isset($user[$this->fields['username']]) || isset($user[$this->userModel . '.' . $this->fields['username']]))) {
|
|
if (isset($user[$this->fields['username']]) && !empty($user[$this->fields['username']]) && !empty($user[$this->fields['password']])) {
|
|
if (trim($user[$this->fields['username']]) == '=' || trim($user[$this->fields['password']]) == '=') {
|
|
return false;
|
|
}
|
|
$find = array(
|
|
$this->fields['username'] => $user[$this->fields['username']],
|
|
$this->fields['password'] => $user[$this->fields['password']]
|
|
);
|
|
} elseif (isset($user[$this->userModel . '.' . $this->fields['username']]) && !empty($user[$this->userModel . '.' . $this->fields['username']])) {
|
|
if (trim($user[$this->userModel . '.' . $this->fields['username']]) == '=' || trim($user[$this->userModel . '.' . $this->fields['password']]) == '=') {
|
|
return false;
|
|
}
|
|
$find = array(
|
|
$this->fields['username'] => $user[$this->userModel . '.' . $this->fields['username']],
|
|
$this->fields['password'] => $user[$this->userModel . '.' . $this->fields['password']]
|
|
);
|
|
} else {
|
|
return false;
|
|
}
|
|
$model =& $this->getModel();
|
|
$data = $model->find(am($find, $this->userScope), null, null, -1);
|
|
if (empty($data) || empty($data[$this->userModel])) {
|
|
return null;
|
|
}
|
|
} elseif (is_numeric($user)) {
|
|
// Assume it's a user's ID
|
|
$model =& $this->getModel();
|
|
$data = $model->find(am(array($model->escapeField() => $user), $this->userScope));
|
|
|
|
if (empty($data) || empty($data[$this->userModel])) {
|
|
return null;
|
|
}
|
|
}
|
|
if (isset($data) && !empty($data)) {
|
|
if (!empty($data[$this->userModel][$this->fields['password']])) {
|
|
unset($data[$this->userModel][$this->fields['password']]);
|
|
}
|
|
return $data[$this->userModel];
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
/**
|
|
* Hash any passwords found in $data using $userModel and $fields['password']
|
|
*
|
|
* @access public
|
|
* @param array $data
|
|
* @param array $hash sha1, sha256, md5
|
|
* @return array
|
|
*/
|
|
function hashPasswords($data) {
|
|
if (isset($data[$this->userModel])) {
|
|
if (!empty($data[$this->userModel][$this->fields['username']]) && !empty($data[$this->userModel][$this->fields['password']])) {
|
|
$data[$this->userModel][$this->fields['password']] = $this->password($data[$this->userModel][$this->fields['password']]);
|
|
}
|
|
}
|
|
return $data;
|
|
}
|
|
/**
|
|
* Hash a password with the application's salt value (as defined in CAKE_SESSION_STRING)
|
|
*
|
|
* @access public
|
|
* @param string $password
|
|
* @param array $hash sha1, sha256, md5
|
|
* @return string
|
|
*/
|
|
function password($password) {
|
|
return Security::hash(CAKE_SESSION_STRING . $password, $this->hash);
|
|
}
|
|
/**
|
|
* Component shutdown. If user is logged in, wipe out redirect.
|
|
*
|
|
* @access public
|
|
* @param object $controller
|
|
* @return void
|
|
*/
|
|
function shutdown(&$controller) {
|
|
if ($this->_loggedIn) {
|
|
$this->Session->del('Auth.redirect');
|
|
}
|
|
}
|
|
/**
|
|
* @access protected
|
|
*/
|
|
function _normalizeURL($url = '/') {
|
|
if (is_array($url)) {
|
|
$url = Router::url($url);
|
|
}
|
|
|
|
$paths = Router::getPaths();
|
|
if (!empty($paths['base']) && stristr($url, $paths['base'])) {
|
|
$url = r($paths['base'], '', $url);
|
|
}
|
|
|
|
$url = '/' . $url . '/';
|
|
|
|
while (strpos($url, '//') !== false) {
|
|
$url = r('//', '/', $url);
|
|
}
|
|
return $url;
|
|
}
|
|
}
|
|
?>
|