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Switching the available roles and the current user's capabilities no longer happens in `switch_to_blog()` and `restore_current_blog()`, instead it has been moved to a new function `wp_switch_roles_and_user()` which is hooked into the site switching process. This allows to improve performance by temporarily unhooking the function when roles and capabilities do not need to be switched. This change ensures that switching available roles now works closer to switching user capabilities, particularly the changes in [41624]. A new `WP_Roles::for_site( $site_id )` method has been introduced, and the `WP_Roles::_init()` method has been deprecated. It is furthermore possible to retrieve the site ID for which the available roles are currently initialized through a new `WP_Roles::get_site_id()`. Props johnjamesjacoby, flixos90. Fixes #38645. Built from https://develop.svn.wordpress.org/trunk@41625 git-svn-id: http://core.svn.wordpress.org/trunk@41460 1a063a9b-81f0-0310-95a4-ce76da25c4cd
362 lines
8.0 KiB
PHP
362 lines
8.0 KiB
PHP
<?php
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/**
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* User API: WP_Roles class
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*
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* @package WordPress
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* @subpackage Users
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* @since 4.4.0
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*/
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/**
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* Core class used to implement a user roles API.
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*
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* The role option is simple, the structure is organized by role name that store
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* the name in value of the 'name' key. The capabilities are stored as an array
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* in the value of the 'capability' key.
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*
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* array (
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* 'rolename' => array (
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* 'name' => 'rolename',
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* 'capabilities' => array()
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* )
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* )
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*
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* @since 2.0.0
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*/
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class WP_Roles {
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/**
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* List of roles and capabilities.
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*
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* @since 2.0.0
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* @var array
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*/
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public $roles;
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/**
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* List of the role objects.
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*
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* @since 2.0.0
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* @var array
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*/
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public $role_objects = array();
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/**
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* List of role names.
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*
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* @since 2.0.0
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* @var array
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*/
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public $role_names = array();
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/**
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* Option name for storing role list.
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*
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* @since 2.0.0
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* @var string
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*/
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public $role_key;
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/**
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* Whether to use the database for retrieval and storage.
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*
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* @since 2.1.0
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* @var bool
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*/
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public $use_db = true;
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/**
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* The site ID the roles are initialized for.
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*
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* @since 4.9.0
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* @var int
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*/
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protected $site_id = 0;
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/**
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* Constructor
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*
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* @since 2.0.0
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* @since 4.9.0 The $site_id argument was added.
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*
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* @global array $wp_user_roles Used to set the 'roles' property value.
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*
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* @param int $site_id Site ID to initialize roles for. Default is the current site.
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*/
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public function __construct( $site_id = null ) {
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global $wp_user_roles;
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$this->use_db = empty( $wp_user_roles );
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$this->for_site( $site_id );
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}
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/**
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* Make private/protected methods readable for backward compatibility.
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*
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* @since 4.0.0
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*
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* @param callable $name Method to call.
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* @param array $arguments Arguments to pass when calling.
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* @return mixed|false Return value of the callback, false otherwise.
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*/
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public function __call( $name, $arguments ) {
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if ( '_init' === $name ) {
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return call_user_func_array( array( $this, $name ), $arguments );
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}
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return false;
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}
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/**
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* Set up the object properties.
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*
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* The role key is set to the current prefix for the $wpdb object with
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* 'user_roles' appended. If the $wp_user_roles global is set, then it will
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* be used and the role option will not be updated or used.
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*
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* @since 2.1.0
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* @deprecated 4.9.0 Use WP_Roles::for_site()
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*/
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protected function _init() {
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_deprecated_function( __METHOD__, '4.9.0', 'WP_Roles::for_site()' );
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$this->for_site();
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}
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/**
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* Reinitialize the object
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*
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* Recreates the role objects. This is typically called only by switch_to_blog()
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* after switching wpdb to a new site ID.
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*
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* @since 3.5.0
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* @deprecated 4.7.0 Use WP_Roles::for_site()
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*/
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public function reinit() {
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_deprecated_function( __METHOD__, '4.7.0', 'WP_Roles::for_site()' );
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$this->for_site();
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}
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/**
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* Add role name with capabilities to list.
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*
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* Updates the list of roles, if the role doesn't already exist.
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*
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* The capabilities are defined in the following format `array( 'read' => true );`
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* To explicitly deny a role a capability you set the value for that capability to false.
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*
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* @since 2.0.0
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*
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* @param string $role Role name.
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* @param string $display_name Role display name.
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* @param array $capabilities List of role capabilities in the above format.
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* @return WP_Role|void WP_Role object, if role is added.
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*/
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public function add_role( $role, $display_name, $capabilities = array() ) {
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if ( empty( $role ) || isset( $this->roles[ $role ] ) ) {
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return;
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}
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$this->roles[$role] = array(
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'name' => $display_name,
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'capabilities' => $capabilities
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);
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if ( $this->use_db )
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update_option( $this->role_key, $this->roles );
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$this->role_objects[$role] = new WP_Role( $role, $capabilities );
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$this->role_names[$role] = $display_name;
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return $this->role_objects[$role];
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}
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/**
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* Remove role by name.
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*
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* @since 2.0.0
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*
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* @param string $role Role name.
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*/
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public function remove_role( $role ) {
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if ( ! isset( $this->role_objects[$role] ) )
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return;
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unset( $this->role_objects[$role] );
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unset( $this->role_names[$role] );
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unset( $this->roles[$role] );
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if ( $this->use_db )
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update_option( $this->role_key, $this->roles );
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if ( get_option( 'default_role' ) == $role )
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update_option( 'default_role', 'subscriber' );
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}
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/**
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* Add capability to role.
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*
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* @since 2.0.0
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*
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* @param string $role Role name.
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* @param string $cap Capability name.
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* @param bool $grant Optional, default is true. Whether role is capable of performing capability.
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*/
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public function add_cap( $role, $cap, $grant = true ) {
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if ( ! isset( $this->roles[$role] ) )
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return;
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$this->roles[$role]['capabilities'][$cap] = $grant;
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if ( $this->use_db )
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update_option( $this->role_key, $this->roles );
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}
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/**
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* Remove capability from role.
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*
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* @since 2.0.0
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*
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* @param string $role Role name.
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* @param string $cap Capability name.
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*/
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public function remove_cap( $role, $cap ) {
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if ( ! isset( $this->roles[$role] ) )
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return;
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unset( $this->roles[$role]['capabilities'][$cap] );
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if ( $this->use_db )
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update_option( $this->role_key, $this->roles );
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}
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/**
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* Retrieve role object by name.
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*
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* @since 2.0.0
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*
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* @param string $role Role name.
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* @return WP_Role|null WP_Role object if found, null if the role does not exist.
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*/
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public function get_role( $role ) {
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if ( isset( $this->role_objects[$role] ) )
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return $this->role_objects[$role];
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else
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return null;
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}
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/**
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* Retrieve list of role names.
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*
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* @since 2.0.0
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*
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* @return array List of role names.
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*/
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public function get_names() {
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return $this->role_names;
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}
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/**
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* Whether role name is currently in the list of available roles.
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*
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* @since 2.0.0
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*
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* @param string $role Role name to look up.
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* @return bool
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*/
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public function is_role( $role ) {
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return isset( $this->role_names[$role] );
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}
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/**
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* Initializes all of the available roles.
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*
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* @since 4.9.0
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*/
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public function init_roles() {
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if ( empty( $this->roles ) ) {
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return;
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}
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$this->role_objects = array();
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$this->role_names = array();
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foreach ( array_keys( $this->roles ) as $role ) {
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$this->role_objects[ $role ] = new WP_Role( $role, $this->roles[ $role ]['capabilities'] );
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$this->role_names[ $role ] = $this->roles[ $role ]['name'];
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}
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/**
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* After the roles have been initialized, allow plugins to add their own roles.
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*
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* @since 4.7.0
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*
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* @param WP_Roles $this A reference to the WP_Roles object.
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*/
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do_action( 'wp_roles_init', $this );
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}
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/**
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* Sets the site to operate on. Defaults to the current site.
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*
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* @since 4.9.0
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*
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* @global wpdb $wpdb WordPress database abstraction object.
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*
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* @param int $site_id Site ID to initialize roles for. Default is the current site.
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*/
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public function for_site( $site_id = null ) {
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global $wpdb;
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if ( ! empty( $site_id ) ) {
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$this->site_id = absint( $site_id );
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} else {
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$this->site_id = get_current_blog_id();
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}
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$this->role_key = $wpdb->get_blog_prefix( $this->site_id ) . 'user_roles';
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if ( ! empty( $this->roles ) && ! $this->use_db ) {
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return;
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}
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$this->roles = $this->get_roles_data();
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$this->init_roles();
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}
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/**
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* Gets the ID of the site for which roles are currently initialized.
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*
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* @since 4.9.0
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*
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* @return int Site ID.
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*/
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public function get_site_id() {
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return $this->site_id;
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}
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/**
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* Gets the available roles data.
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*
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* @since 4.9.0
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*
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* @global array $wp_user_roles Used to set the 'roles' property value.
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*
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* @return array Roles array.
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*/
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protected function get_roles_data() {
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global $wp_user_roles;
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if ( ! empty( $wp_user_roles ) ) {
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return $wp_user_roles;
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}
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if ( is_multisite() && $this->site_id != get_current_blog_id() ) {
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remove_action( 'switch_blog', 'wp_switch_roles_and_user', 1 );
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$roles = get_blog_option( $this->site_id, $this->role_key, array() );
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add_action( 'switch_blog', 'wp_switch_roles_and_user', 1, 2 );
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return $roles;
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}
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return get_option( $this->role_key, array() );
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}
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}
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