/lib/Cake/Controller/Component/Acl/PhpAcl.php - アノテート - pictcode - Redmine

pictcode / lib / Cake / Controller / Component / Acl / PhpAcl.php @ 635eef61

-eef61
+<?php
 /**
  * PHP configuration based AclInterface implementation
+ *
  * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
  * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+ *
  * Licensed under The MIT License
  * For full copyright and license information, please see the LICENSE.txt
  * Redistributions of files must retain the above copyright notice.
+ *
  * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
  * @link          http://cakephp.org CakePHP(tm) Project
  * @package       Cake.Controller.Component.Acl
  * @since         CakePHP(tm) v 2.1
  * @license       http://www.opensource.org/licenses/mit-license.php MIT License
  */
 /**
  * PhpAcl implements an access control system using a plain PHP configuration file.
  * An example file can be found in app/Config/acl.php
+ *
  * @package Cake.Controller.Component.Acl
  */
 class PhpAcl extends Object implements AclInterface {
 /**
  * Constant for deny
+ *
  * @var bool
  */
         const DENY = false;
 /**
  * Constant for allow
+ *
  * @var bool
  */
         const ALLOW = true;
 /**
  * Options:
  *  - policy: determines behavior of the check method. Deny policy needs explicit allow rules, allow policy needs explicit deny rules
  *  - config: absolute path to config file that contains the acl rules (@see app/Config/acl.php)
+ *
  * @var array
  */
         public $options = array();
 /**
  * Aro Object
+ *
  * @var PhpAro
  */
         public $Aro = null;
 /**
  * Aco Object
+ *
  * @var PhpAco
  */
         public $Aco = null;
 /**
  * Constructor
+ *
  * Sets a few default settings up.
  */
         public function __construct() {
                 $this->options = array(
                         'policy' => static::DENY,
                         'config' => APP . 'Config' . DS . 'acl.php',
                 );
+        }
 /**
  * Initialize method
+ *
  * @param AclComponent $Component Component instance
  * @return void
  */
         public function initialize(Component $Component) {
                 if (!empty($Component->settings['adapter'])) {
                         $this->options = $Component->settings['adapter'] + $this->options;
+                }
                 App::uses('PhpReader', 'Configure');
                 $Reader = new PhpReader(dirname($this->options['config']) . DS);
                 $config = $Reader->read(basename($this->options['config']));
                 $this->build($config);
                 $Component->Aco = $this->Aco;
                 $Component->Aro = $this->Aro;
+        }
 /**
  * build and setup internal ACL representation
+ *
  * @param array $config configuration array, see docs
  * @return void
  * @throws AclException When required keys are missing.
  */
         public function build(array $config) {
                 if (empty($config['roles'])) {
                         throw new AclException(__d('cake_dev', '"roles" section not found in configuration.'));
+                }
                 if (empty($config['rules']['allow']) && empty($config['rules']['deny'])) {
                         throw new AclException(__d('cake_dev', 'Neither "allow" nor "deny" rules were provided in configuration.'));
+                }
                 $rules['allow'] = !empty($config['rules']['allow']) ? $config['rules']['allow'] : array();
                 $rules['deny'] = !empty($config['rules']['deny']) ? $config['rules']['deny'] : array();
                 $roles = !empty($config['roles']) ? $config['roles'] : array();
                 $map = !empty($config['map']) ? $config['map'] : array();
                 $alias = !empty($config['alias']) ? $config['alias'] : array();
                 $this->Aro = new PhpAro($roles, $map, $alias);
                 $this->Aco = new PhpAco($rules);
+        }
 /**
  * No op method, allow cannot be done with PhpAcl
+ *
  * @param string $aro ARO The requesting object identifier.
  * @param string $aco ACO The controlled object identifier.
  * @param string $action Action (defaults to *)
  * @return bool Success
  */
         public function allow($aro, $aco, $action = "*") {
                 return $this->Aco->access($this->Aro->resolve($aro), $aco, $action, 'allow');
+        }
 /**
  * deny ARO access to ACO
+ *
  * @param string $aro ARO The requesting object identifier.
  * @param string $aco ACO The controlled object identifier.
  * @param string $action Action (defaults to *)
  * @return bool Success
  */
         public function deny($aro, $aco, $action = "*") {
                 return $this->Aco->access($this->Aro->resolve($aro), $aco, $action, 'deny');
+        }
 /**
  * No op method
+ *
  * @param string $aro ARO The requesting object identifier.
  * @param string $aco ACO The controlled object identifier.
  * @param string $action Action (defaults to *)
  * @return bool Success
  */
         public function inherit($aro, $aco, $action = "*") {
                 return false;
+        }
 /**
  * Main ACL check function. Checks to see if the ARO (access request object) has access to the
  * ACO (access control object).
+ *
  * @param string $aro ARO
  * @param string $aco ACO
  * @param string $action Action
  * @return bool true if access is granted, false otherwise
  */
         public function check($aro, $aco, $action = "*") {
                 $allow = $this->options['policy'];
                 $prioritizedAros = $this->Aro->roles($aro);
                 if ($action && $action !== "*") {
                         $aco .= '/' . $action;
+                }
                 $path = $this->Aco->path($aco);
                 if (empty($path)) {
                         return $allow;
+                }
                 foreach ($path as $node) {
                         foreach ($prioritizedAros as $aros) {
                                 if (!empty($node['allow'])) {
                                         $allow = $allow || count(array_intersect($node['allow'], $aros));
+                                }
                                 if (!empty($node['deny'])) {
                                         $allow = $allow && !count(array_intersect($node['deny'], $aros));
+                                }
+                        }
+                }
                 return $allow;
+        }
+}
 /**
  * Access Control Object
  */
 class PhpAco {
 /**
  * holds internal ACO representation
+ *
  * @var array
  */
         protected $_tree = array();
 /**
  * map modifiers for ACO paths to their respective PCRE pattern
+ *
  * @var array
  */
         public static $modifiers = array(
                 '*' => '.*',
         );
 /**
  * Constructor
+ *
  * @param array $rules Rules array
  */
         public function __construct(array $rules = array()) {
                 foreach (array('allow', 'deny') as $type) {
                         if (empty($rules[$type])) {
                                 $rules[$type] = array();
+                        }
+                }
                 $this->build($rules['allow'], $rules['deny']);
+        }
 /**
  * return path to the requested ACO with allow and deny rules attached on each level
+ *
  * @param string $aco ACO string
  * @return array
  */
         public function path($aco) {
                 $aco = $this->resolve($aco);
                 $path = array();
                 $level = 0;
                 $root = $this->_tree;
                 $stack = array(array($root, 0));
                 while (!empty($stack)) {
                         list($root, $level) = array_pop($stack);
                         if (empty($path[$level])) {
                                 $path[$level] = array();
+                        }
                         foreach ($root as $node => $elements) {
                                 $pattern = '/^' . str_replace(array_keys(static::$modifiers), array_values(static::$modifiers), $node) . '$/';
                                 if ($node == $aco[$level] || preg_match($pattern, $aco[$level])) {
                                         // merge allow/denies with $path of current level
                                         foreach (array('allow', 'deny') as $policy) {
                                                 if (!empty($elements[$policy])) {
                                                         if (empty($path[$level][$policy])) {
                                                                 $path[$level][$policy] = array();
+                                                        }
                                                         $path[$level][$policy] = array_merge($path[$level][$policy], $elements[$policy]);
+                                                }
+                                        }
                                         // traverse
                                         if (!empty($elements['children']) && isset($aco[$level + 1])) {
                                                 array_push($stack, array($elements['children'], $level + 1));
+                                        }
+                                }
+                        }
+                }
                 return $path;
+        }
 /**
  * allow/deny ARO access to ARO
+ *
  * @param string $aro ARO string
  * @param string $aco ACO string
  * @param string $action Action string
  * @param string $type access type
  * @return void
  */
         public function access($aro, $aco, $action, $type = 'deny') {
                 $aco = $this->resolve($aco);
                 $depth = count($aco);
                 $root = $this->_tree;
                 $tree = &$root;
                 foreach ($aco as $i => $node) {
                         if (!isset($tree[$node])) {
                                 $tree[$node] = array(
                                         'children' => array(),
                                 );
+                        }
                         if ($i < $depth - 1) {
                                 $tree = &$tree[$node]['children'];
                         } else {
                                 if (empty($tree[$node][$type])) {
                                         $tree[$node][$type] = array();
+                                }
                                 $tree[$node][$type] = array_merge(is_array($aro) ? $aro : array($aro), $tree[$node][$type]);
+                        }
+                }
                 $this->_tree = &$root;
+        }
 /**
  * resolve given ACO string to a path
+ *
  * @param string $aco ACO string
  * @return array path
  */
         public function resolve($aco) {
                 if (is_array($aco)) {
                         return array_map('strtolower', $aco);
+                }
                 // strip multiple occurrences of '/'
                 $aco = preg_replace('#/+#', '/', $aco);
                 // make case insensitive
                 $aco = ltrim(strtolower($aco), '/');
                 return array_filter(array_map('trim', explode('/', $aco)));
+        }
 /**
  * build a tree representation from the given allow/deny informations for ACO paths
+ *
  * @param array $allow ACO allow rules
  * @param array $deny ACO deny rules
  * @return void
  */
         public function build(array $allow, array $deny = array()) {
                 $this->_tree = array();
                 foreach ($allow as $dotPath => $aros) {
                         if (is_string($aros)) {
                                 $aros = array_map('trim', explode(',', $aros));
+                        }
                         $this->access($aros, $dotPath, null, 'allow');
+                }
                 foreach ($deny as $dotPath => $aros) {
                         if (is_string($aros)) {
                                 $aros = array_map('trim', explode(',', $aros));
+                        }
                         $this->access($aros, $dotPath, null, 'deny');
+                }
+        }
+}
 /**
  * Access Request Object
  */
 class PhpAro {
 /**
  * role to resolve to when a provided ARO is not listed in
  * the internal tree
+ *
  * @var string
  */
         const DEFAULT_ROLE = 'Role/default';
 /**
  * map external identifiers. E.g. if
+ *
  * array('User' => array('username' => 'jeff', 'role' => 'editor'))
+ *
  * is passed as an ARO to one of the methods of AclComponent, PhpAcl
  * will check if it can be resolved to an User or a Role defined in the
  * configuration file.
+ *
  * @var array
  * @see app/Config/acl.php
  */
         public $map = array(
                 'User' => 'User/username',
                 'Role' => 'User/role',
         );
 /**
  * aliases to map
+ *
  * @var array
  */
         public $aliases = array();
 /**
  * internal ARO representation
+ *
  * @var array
  */
         protected $_tree = array();
 /**
  * Constructor
+ *
  * @param array $aro The aro data
  * @param array $map The identifier mappings
  * @param array $aliases The aliases to map.
  */
         public function __construct(array $aro = array(), array $map = array(), array $aliases = array()) {
                 if (!empty($map)) {
                         $this->map = $map;
+                }
                 $this->aliases = $aliases;
                 $this->build($aro);
+        }
 /**
  * From the perspective of the given ARO, walk down the tree and
  * collect all inherited AROs levelwise such that AROs from different
  * branches with equal distance to the requested ARO will be collected at the same
  * index. The resulting array will contain a prioritized list of (list of) roles ordered from
  * the most distant AROs to the requested one itself.
+ *
  * @param string|array $aro An ARO identifier
  * @return array prioritized AROs
  */
         public function roles($aro) {
                 $aros = array();
                 $aro = $this->resolve($aro);
                 $stack = array(array($aro, 0));
                 while (!empty($stack)) {
                         list($element, $depth) = array_pop($stack);
                         $aros[$depth][] = $element;
                         foreach ($this->_tree as $node => $children) {
                                 if (in_array($element, $children)) {
                                         array_push($stack, array($node, $depth + 1));
+                                }
+                        }
+                }
                 return array_reverse($aros);
+        }
 /**
  * resolve an ARO identifier to an internal ARO string using
  * the internal mapping information.
+ *
  * @param string|array $aro ARO identifier (User.jeff, array('User' => ...), etc)
  * @return string internal aro string (e.g. User/jeff, Role/default)
  */
         public function resolve($aro) {
                 foreach ($this->map as $aroGroup => $map) {
                         list ($model, $field) = explode('/', $map, 2);
                         $mapped = '';
                         if (is_array($aro)) {
                                 if (isset($aro['model']) && isset($aro['foreign_key']) && $aro['model'] === $aroGroup) {
                                         $mapped = $aroGroup . '/' . $aro['foreign_key'];
                                 } elseif (isset($aro[$model][$field])) {
                                         $mapped = $aroGroup . '/' . $aro[$model][$field];
                                 } elseif (isset($aro[$field])) {
                                         $mapped = $aroGroup . '/' . $aro[$field];
+                                }
                         } elseif (is_string($aro)) {
                                 $aro = ltrim($aro, '/');
                                 if (strpos($aro, '/') === false) {
                                         $mapped = $aroGroup . '/' . $aro;
                                 } else {
                                         list($aroModel, $aroValue) = explode('/', $aro, 2);
                                         $aroModel = Inflector::camelize($aroModel);
                                         if ($aroModel === $model || $aroModel === $aroGroup) {
                                                 $mapped = $aroGroup . '/' . $aroValue;
+                                        }
+                                }
+                        }
                         if (isset($this->_tree[$mapped])) {
                                 return $mapped;
+                        }
                         // is there a matching alias defined (e.g. Role/1 => Role/admin)?
                         if (!empty($this->aliases[$mapped])) {
                                 return $this->aliases[$mapped];
+                        }
+                }
                 return static::DEFAULT_ROLE;
+        }
 /**
  * adds a new ARO to the tree
+ *
  * @param array $aro one or more ARO records
  * @return void
  */
         public function addRole(array $aro) {
                 foreach ($aro as $role => $inheritedRoles) {
                         if (!isset($this->_tree[$role])) {
                                 $this->_tree[$role] = array();
+                        }
                         if (!empty($inheritedRoles)) {
                                 if (is_string($inheritedRoles)) {
                                         $inheritedRoles = array_map('trim', explode(',', $inheritedRoles));
+                                }
                                 foreach ($inheritedRoles as $dependency) {
                                         // detect cycles
                                         $roles = $this->roles($dependency);
                                         if (in_array($role, Hash::flatten($roles))) {
                                                 $path = '';
                                                 foreach ($roles as $roleDependencies) {
                                                         $path .= implode('|', (array)$roleDependencies) . ' -> ';
+                                                }
                                                 trigger_error(__d('cake_dev', 'cycle detected when inheriting %s from %s. Path: %s', $role, $dependency, $path . $role));
                                                 continue;
+                                        }
                                         if (!isset($this->_tree[$dependency])) {
                                                 $this->_tree[$dependency] = array();
+                                        }
                                         $this->_tree[$dependency][] = $role;
+                                }
+                        }
+                }
+        }
 /**
  * adds one or more aliases to the internal map. Overwrites existing entries.
+ *
  * @param array $alias alias from => to (e.g. Role/13 -> Role/editor)
  * @return void
  */
         public function addAlias(array $alias) {
                 $this->aliases = $alias + $this->aliases;
+        }
 /**
  * build an ARO tree structure for internal processing
+ *
  * @param array $aros array of AROs as key and their inherited AROs as values
  * @return void
  */
         public function build(array $aros) {
                 $this->_tree = array();
                 $this->addRole($aros);
+        }
+}