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<?php /** * User API: WP_Roles class * * @package WordPress * @subpackage Users * @since 4.4.0 / /* * Core class used to implement a user roles API. * * The role option is simple, the structure is organized by role name that store * the name in value of the 'name' key. The capabilities are stored as an array * in the value of the 'capability' key. * * array ( * 'rolename' => array ( * 'name' => 'rolename', * 'capabilities' => array() * ) * ) * * @since 2.0.0 / #[AllowDynamicProperties] class WP_Roles { /* * List of roles and capabilities. * * @since 2.0.0 * @var array[] / public $roles; /* * List of the role objects. * * @since 2.0.0 * @var WP_Role[] / public $role_objects = array(); /* * List of role names. * * @since 2.0.0 * @var string[] / public $role_names = array(); /* * Option name for storing role list. * * @since 2.0.0 * @var string / public $role_key; /* * Whether to use the database for retrieval and storage. * * @since 2.1.0 * @var bool / public $use_db = true; /* * The site ID the roles are initialized for. * * @since 4.9.0 * @var int / protected $site_id = 0; /* * Constructor. * * @since 2.0.0 * @since 4.9.0 The `$site_id` argument was added. * * @global array $wp_user_roles Used to set the 'roles' property value. * * @param int $site_id Site ID to initialize roles for. Default is the current site. / public function __construct( $site_id = null ) { global $wp_user_roles; $this->use_db = empty( $wp_user_roles ); $this->for_site( $site_id ); } /* * Makes private/protected methods readable for backward compatibility. * * @since 4.0.0 * * @param string $name Method to call. * @param array $arguments Arguments to pass when calling. * @return mixed\|false Return value of the callback, false otherwise. / public function __call( $name, $arguments ) { if ( '_init' === $name ) { return $this->_init( ...$arguments ); } return false; } /* * Sets up the object properties. * * The role key is set to the current prefix for the $wpdb object with * 'user_roles' appended. If the $wp_user_roles global is set, then it will * be used and the role option will not be updated or used. * * @since 2.1.0 * @deprecated 4.9.0 Use WP_Roles::for_site() / protected function _init() { _deprecated_function( __METHOD__, '4.9.0', 'WP_Roles::for_site()' ); $this->for_site(); } /* * Reinitializes the object. * * Recreates the role objects. This is typically called only by switch_to_blog() * after switching wpdb to a new site ID. * * @since 3.5.0 * @deprecated 4.7.0 Use WP_Roles::for_site() / public function reinit() { _deprecated_function( __METHOD__, '4.7.0', 'WP_Roles::for_site()' ); $this->for_site(); } /* * Adds a role name with capabilities to the list. * * Updates the list of roles, if the role doesn't already exist. * * The capabilities are defined in the following format: `array( 'read' => true )`. * To explicitly deny the role a capability, set the value for that capability to false. * * @since 2.0.0 * * @param string $role Role name. * @param string $display_name Role display name. * @param bool[] $capabilities Optional. List of capabilities keyed by the capability name, * e.g. `array( 'edit_posts' => true, 'delete_posts' => false )`. * Default empty array. * @return WP_Role\|void WP_Role object, if the role is added. / public function add_role( $role, $display_name, $capabilities = array() ) { if ( empty( $role ) \|\| isset( $this->roles[ $role ] ) ) { return; } $this->roles[ $role ] = array( 'name' => $display_name, 'capabilities' => $capabilities, ); if ( $this->use_db ) { update_option( $this->role_key, $this->roles, true ); } $this->role_objects[ $role ] = new WP_Role( $role, $capabilities ); $this->role_names[ $role ] = $display_name; return $this->role_objects[ $role ]; } /* * Removes a role by name. * * @since 2.0.0 * * @param string $role Role name. / public function remove_role( $role ) { if ( ! isset( $this->role_objects[ $role ] ) ) { return; } unset( $this->role_objects[ $role ] ); unset( $this->role_names[ $role ] ); unset( $this->roles[ $role ] ); if ( $this->use_db ) { update_option( $this->role_key, $this->roles ); } if ( get_option( 'default_role' ) === $role ) { update_option( 'default_role', 'subscriber' ); } } /* * Adds a capability to role. * * @since 2.0.0 * * @param string $role Role name. * @param string $cap Capability name. * @param bool $grant Optional. Whether role is capable of performing capability. * Default true. / public function add_cap( $role, $cap, $grant = true ) { if ( ! isset( $this->roles[ $role ] ) ) { return; } $this->roles[ $role ]['capabilities'][ $cap ] = $grant; if ( $this->use_db ) { update_option( $this->role_key, $this->roles ); } } /* * Removes a capability from role. * * @since 2.0.0 * * @param string $role Role name. * @param string $cap Capability name. / public function remove_cap( $role, $cap ) { if ( ! isset( $this->roles[ $role ] ) ) { return; } unset( $this->roles[ $role ]['capabilities'][ $cap ] ); if ( $this->use_db ) { update_option( $this->role_key, $this->roles ); } } /* * Retrieves a role object by name. * * @since 2.0.0 * * @param string $role Role name. * @return WP_Role\|null WP_Role object if found, null if the role does not exist. / public function get_role( $role ) { if ( isset( $this->role_objects[ $role ] ) ) { return $this->role_objects[ $role ]; } else { return null; } } /* * Retrieves a list of role names. * * @since 2.0.0 * * @return string[] List of role names. / public function get_names() { return $this->role_names; } /* * Determines whether a role name is currently in the list of available roles. * * @since 2.0.0 * * @param string $role Role name to look up. * @return bool / public function is_role( $role ) { return isset( $this->role_names[ $role ] ); } /* * Initializes all of the available roles. * * @since 4.9.0 / public function init_roles() { if ( empty( $this->roles ) ) { return; } $this->role_objects = array(); $this->role_names = array(); foreach ( array_keys( $this->roles ) as $role ) { $this->role_objects[ $role ] = new WP_Role( $role, $this->roles[ $role ]['capabilities'] ); $this->role_names[ $role ] = $this->roles[ $role ]['name']; } /* * Fires after the roles have been initialized, allowing plugins to add their own roles. * * @since 4.7.0 * * @param WP_Roles $wp_roles A reference to the WP_Roles object. / do_action( 'wp_roles_init', $this ); } /* * Sets the site to operate on. Defaults to the current site. * * @since 4.9.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $site_id Site ID to initialize roles for. Default is the current site. / public function for_site( $site_id = null ) { global $wpdb; if ( ! empty( $site_id ) ) { $this->site_id = absint( $site_id ); } else { $this->site_id = get_current_blog_id(); } $this->role_key = $wpdb->get_blog_prefix( $this->site_id ) . 'user_roles'; if ( ! empty( $this->roles ) && ! $this->use_db ) { return; } $this->roles = $this->get_roles_data(); $this->init_roles(); } /* * Gets the ID of the site for which roles are currently initialized. * * @since 4.9.0 * * @return int Site ID. / public function get_site_id() { return $this->site_id; } /* * Gets the available roles data. * * @since 4.9.0 * * @global array $wp_user_roles Used to set the 'roles' property value. * * @return array Roles array. */ protected function get_roles_data() { global $wp_user_roles; if ( ! empty( $wp_user_roles ) ) { return $wp_user_roles; } if ( is_multisite() && get_current_blog_id() !== $this->site_id ) { remove_action( 'switch_blog', 'wp_switch_roles_and_user', 1 ); $roles = get_blog_option( $this->site_id, $this->role_key, array() ); add_action( 'switch_blog', 'wp_switch_roles_and_user', 1, 2 ); return $roles; } return get_option( $this->role_key, array() ); } }