220 lines
6.7 KiB
PHP
Executable File
220 lines
6.7 KiB
PHP
Executable File
<?php
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/**
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @license http://www.opensource.org/licenses/mit-license.php MIT License
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*/
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App::uses('Security', 'Utility');
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App::uses('Hash', 'Utility');
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/**
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* Base Authentication class with common methods and properties.
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*
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* @package Cake.Controller.Component.Auth
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*/
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abstract class BaseAuthenticate {
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/**
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* Settings for this object.
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*
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* - `fields` The fields to use to identify a user by.
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* - `userModel` The model name of the User, defaults to User.
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* - `scope` Additional conditions to use when looking up and authenticating users,
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* i.e. `array('User.is_active' => 1).`
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* - `recursive` The value of the recursive key passed to find(). Defaults to 0.
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* - `contain` Extra models to contain and store in session.
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* - `passwordHasher` Password hasher class. Can be a string specifying class name
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* or an array containing `className` key, any other keys will be passed as
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* settings to the class. Defaults to 'Simple'.
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*
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* @var array
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*/
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public $settings = array(
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'fields' => array(
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'username' => 'username',
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'password' => 'password'
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),
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'userModel' => 'User',
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'scope' => array(),
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'recursive' => 0,
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'contain' => null,
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'passwordHasher' => 'Simple'
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);
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/**
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* A Component collection, used to get more components.
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*
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* @var ComponentCollection
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*/
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protected $_Collection;
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/**
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* Password hasher instance.
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*
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* @var AbstractPasswordHasher
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*/
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protected $_passwordHasher;
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/**
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* Constructor
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*
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* @param ComponentCollection $collection The Component collection used on this request.
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* @param array $settings Array of settings to use.
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*/
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public function __construct(ComponentCollection $collection, $settings) {
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$this->_Collection = $collection;
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$this->settings = Hash::merge($this->settings, $settings);
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}
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/**
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* Find a user record using the standard options.
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*
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* The $username parameter can be a (string)username or an array containing
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* conditions for Model::find('first'). If the $password param is not provided
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* the password field will be present in returned array.
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*
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* Input passwords will be hashed even when a user doesn't exist. This
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* helps mitigate timing attacks that are attempting to find valid usernames.
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*
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* @param string|array $username The username/identifier, or an array of find conditions.
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* @param string $password The password, only used if $username param is string.
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* @return boolean|array Either false on failure, or an array of user data.
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*/
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protected function _findUser($username, $password = null) {
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$userModel = $this->settings['userModel'];
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list(, $model) = pluginSplit($userModel);
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$fields = $this->settings['fields'];
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if (is_array($username)) {
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$conditions = $username;
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} else {
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$conditions = array(
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$model . '.' . $fields['username'] => $username
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);
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}
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if (!empty($this->settings['scope'])) {
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$conditions = array_merge($conditions, $this->settings['scope']);
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}
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$result = ClassRegistry::init($userModel)->find('first', array(
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'conditions' => $conditions,
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'recursive' => $this->settings['recursive'],
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'contain' => $this->settings['contain'],
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));
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if (empty($result[$model])) {
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$this->passwordHasher()->hash($password);
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return false;
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}
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$user = $result[$model];
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if ($password !== null) {
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if (!$this->passwordHasher()->check($password, $user[$fields['password']])) {
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return false;
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}
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unset($user[$fields['password']]);
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}
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unset($result[$model]);
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return array_merge($user, $result);
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}
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/**
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* Return password hasher object
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*
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* @return AbstractPasswordHasher Password hasher instance
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* @throws CakeException If password hasher class not found or
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* it does not extend AbstractPasswordHasher
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*/
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public function passwordHasher() {
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if ($this->_passwordHasher) {
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return $this->_passwordHasher;
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}
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$config = array();
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if (is_string($this->settings['passwordHasher'])) {
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$class = $this->settings['passwordHasher'];
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} else {
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$class = $this->settings['passwordHasher']['className'];
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$config = $this->settings['passwordHasher'];
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unset($config['className']);
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}
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list($plugin, $class) = pluginSplit($class, true);
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$className = $class . 'PasswordHasher';
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App::uses($className, $plugin . 'Controller/Component/Auth');
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if (!class_exists($className)) {
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throw new CakeException(__d('cake_dev', 'Password hasher class "%s" was not found.', $class));
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}
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if (!is_subclass_of($className, 'AbstractPasswordHasher')) {
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throw new CakeException(__d('cake_dev', 'Password hasher must extend AbstractPasswordHasher class.'));
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}
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$this->_passwordHasher = new $className($config);
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return $this->_passwordHasher;
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}
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/**
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* Hash the plain text password so that it matches the hashed/encrypted password
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* in the datasource.
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*
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* @param string $password The plain text password.
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* @return string The hashed form of the password.
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* @deprecated Since 2.4. Use a PasswordHasher class instead.
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*/
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protected function _password($password) {
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return Security::hash($password, null, true);
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}
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/**
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* Authenticate a user based on the request information.
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*
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* @param CakeRequest $request Request to get authentication information from.
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* @param CakeResponse $response A response object that can have headers added.
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* @return mixed Either false on failure, or an array of user data on success.
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*/
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abstract public function authenticate(CakeRequest $request, CakeResponse $response);
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/**
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* Allows you to hook into AuthComponent::logout(),
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* and implement specialized logout behavior.
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*
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* All attached authentication objects will have this method
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* called when a user logs out.
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*
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* @param array $user The user about to be logged out.
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* @return void
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*/
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public function logout($user) {
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}
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/**
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* Get a user based on information in the request. Primarily used by stateless authentication
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* systems like basic and digest auth.
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*
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* @param CakeRequest $request Request object.
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* @return mixed Either false or an array of user information
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*/
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public function getUser(CakeRequest $request) {
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return false;
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}
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/**
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* Handle unauthenticated access attempt.
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*
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* @param CakeRequest $request A request object.
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* @param CakeResponse $response A response object.
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* @return mixed Either true to indicate the unauthenticated request has been
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* dealt with and no more action is required by AuthComponent or void (default).
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*/
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public function unauthenticated(CakeRequest $request, CakeResponse $response) {
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}
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}
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