375 lines
8.4 KiB
PHP
375 lines
8.4 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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#[AllowDynamicProperties]
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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 WP_Role[]
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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 string[]
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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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* Makes 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 string $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 $this->_init( ...$arguments );
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}
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return false;
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}
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/**
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* Sets 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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* Reinitializes 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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* Adds a role name with capabilities to the 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 the role a capability, 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 bool[] $capabilities Optional. List of capabilities keyed by the capability name,
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* e.g. `array( 'edit_posts' => true, 'delete_posts' => false )`.
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* Default empty array.
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* @return WP_Role|void WP_Role object, if the 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, $this->roles );
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}
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$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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* Removes a 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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}
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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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}
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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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/**
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* Adds a 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. Whether role is capable of performing capability.
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* Default true.
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*/
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public function add_cap( $role, $cap, $grant = true ) {
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if ( ! isset( $this->roles[ $role ] ) ) {
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return;
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}
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$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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/**
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* Removes a 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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}
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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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/**
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* Retrieves a 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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/**
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* Retrieves a 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 string[] 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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* Determines whether a 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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* Fires after the roles have been initialized, allowing 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 $wp_roles 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() && get_current_blog_id() !== $this->site_id ) {
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remove_action( 'switch_blog', 'wp_switch_roles_and_user', 1 );
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$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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