/** * User API: WP_User class * * @package WordPress * @subpackage Users * @since 4.4.0 */ /** * Core class used to implement the WP_User object. * * @since 2.0.0 * * @property string $nickname * @property string $description * @property string $user_description * @property string $first_name * @property string $user_firstname * @property string $last_name * @property string $user_lastname * @property string $user_login * @property string $user_pass * @property string $user_nicename * @property string $user_email * @property string $user_url * @property string $user_registered * @property string $user_activation_key * @property string $user_status * @property string $display_name * @property string $spam * @property string $deleted */ class WP_User { /** * User data container. * * @since 2.0.0 * @var object */ public $data; /** * The user's ID. * * @since 2.1.0 * @access public * @var int */ public $ID = 0; /** * The individual capabilities the user has been given. * * @since 2.0.0 * @access public * @var array */ public $caps = array(); /** * User metadata option name. * * @since 2.0.0 * @access public * @var string */ public $cap_key; /** * The roles the user is part of. * * @since 2.0.0 * @access public * @var array */ public $roles = array(); /** * All capabilities the user has, including individual and role based. * * @since 2.0.0 * @access public * @var array */ public $allcaps = array(); /** * The filter context applied to user data fields. * * @since 2.9.0 * @access private * @var string */ var $filter = null; /** * @static * @access private * @var array */ private static $back_compat_keys; /** * Constructor. * * Retrieves the userdata and passes it to WP_User::init(). * * @since 2.0.0 * @access public * * @global wpdb $wpdb WordPress database abstraction object. * * @param int|string|stdClass|WP_User $id User's ID, a WP_User object, or a user object from the DB. * @param string $name Optional. User's username * @param int $blog_id Optional Site ID, defaults to current site. */ public function __construct( $id = 0, $name = '', $blog_id = '' ) { if ( ! isset( self::$back_compat_keys ) ) { $prefix = $GLOBALS['wpdb']->prefix; self::$back_compat_keys = array( 'user_firstname' => 'first_name', 'user_lastname' => 'last_name', 'user_description' => 'description', 'user_level' => $prefix . 'user_level', $prefix . 'usersettings' => $prefix . 'user-settings', $prefix . 'usersettingstime' => $prefix . 'user-settings-time', ); } if ( $id instanceof WP_User ) { $this->init( $id->data, $blog_id ); return; } elseif ( is_object( $id ) ) { $this->init( $id, $blog_id ); return; } if ( ! empty( $id ) && ! is_numeric( $id ) ) { $name = $id; $id = 0; } if ( $id ) { $data = self::get_data_by( 'id', $id ); } else { $data = self::get_data_by( 'login', $name ); } if ( $data ) { $this->init( $data, $blog_id ); } else { $this->data = new stdClass; } } /** * Sets up object properties, including capabilities. * * @param object $data User DB row object. * @param int $blog_id Optional. The site ID to initialize for. */ public function init( $data, $blog_id = '' ) { $this->data = $data; $this->ID = (int) $data->ID; $this->for_blog( $blog_id ); } /** * Return only the main user fields * * @since 3.3.0 * @since 4.4.0 Added 'ID' as an alias of 'id' for the `$field` parameter. * * @static * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $field The field to query against: 'id', 'ID', 'slug', 'email' or 'login'. * @param string|int $value The field value * @return object|false Raw user object */ public static function get_data_by( $field, $value ) { global $wpdb; // 'ID' is an alias of 'id'. if ( 'ID' === $field ) { $field = 'id'; } if ( 'id' == $field ) { // Make sure the value is numeric to avoid casting objects, for example, // to int 1. if ( ! is_numeric( $value ) ) return false; $value = intval( $value ); if ( $value < 1 ) return false; } else { $value = trim( $value ); } if ( !$value ) return false; switch ( $field ) { case 'id': $user_id = $value; $db_field = 'ID'; break; case 'slug': $user_id = wp_cache_get($value, 'userslugs'); $db_field = 'user_nicename'; break; case 'email': $user_id = wp_cache_get($value, 'useremail'); $db_field = 'user_email'; break; case 'login': $value = sanitize_user( $value ); $user_id = wp_cache_get($value, 'userlogins'); $db_field = 'user_login'; break; default: return false; } if ( false !== $user_id ) { if ( $user = wp_cache_get( $user_id, 'users' ) ) return $user; } if ( !$user = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->users WHERE $db_field = %s", $value ) ) ) return false; update_user_caches( $user ); return $user; } /** * Makes private/protected methods readable for backward compatibility. * * @since 4.3.0 * @access public * * @param callable $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_caps' === $name ) { return call_user_func_array( array( $this, $name ), $arguments ); } return false; } /** * Magic method for checking the existence of a certain custom field. * * @since 3.3.0 * @access public * * @param string $key User meta key to check if set. * @return bool Whether the given user meta key is set. */ public function __isset( $key ) { if ( 'id' == $key ) { _deprecated_argument( 'WP_User->id', '2.1.0', sprintf( /* translators: %s: WP_User->ID */ __( 'Use %s instead.' ), 'WP_User->ID' ) ); $key = 'ID'; } if ( isset( $this->data->$key ) ) return true; if ( isset( self::$back_compat_keys[ $key ] ) ) $key = self::$back_compat_keys[ $key ]; return metadata_exists( 'user', $this->ID, $key ); } /** * Magic method for accessing custom fields. * * @since 3.3.0 * @access public * * @param string $key User meta key to retrieve. * @return mixed Value of the given user meta key (if set). If `$key` is 'id', the user ID. */ public function __get( $key ) { if ( 'id' == $key ) { _deprecated_argument( 'WP_User->id', '2.1.0', sprintf( /* translators: %s: WP_User->ID */ __( 'Use %s instead.' ), 'WP_User->ID' ) ); return $this->ID; } if ( isset( $this->data->$key ) ) { $value = $this->data->$key; } else { if ( isset( self::$back_compat_keys[ $key ] ) ) $key = self::$back_compat_keys[ $key ]; $value = get_user_meta( $this->ID, $key, true ); } if ( $this->filter ) { $value = sanitize_user_field( $key, $value, $this->ID, $this->filter ); } return $value; } /** * Magic method for setting custom user fields. * * This method does not update custom fields in the database. It only stores * the value on the WP_User instance. * * @since 3.3.0 * @access public * * @param string $key User meta key. * @param mixed $value User meta value. */ public function __set( $key, $value ) { if ( 'id' == $key ) { _deprecated_argument( 'WP_User->id', '2.1.0', sprintf( /* translators: %s: WP_User->ID */ __( 'Use %s instead.' ), 'WP_User->ID' ) ); $this->ID = $value; return; } $this->data->$key = $value; } /** * Magic method for unsetting a certain custom field. * * @since 4.4.0 * @access public * * @param string $key User meta key to unset. */ public function __unset( $key ) { if ( 'id' == $key ) { _deprecated_argument( 'WP_User->id', '2.1.0', sprintf( /* translators: %s: WP_User->ID */ __( 'Use %s instead.' ), 'WP_User->ID' ) ); } if ( isset( $this->data->$key ) ) { unset( $this->data->$key ); } if ( isset( self::$back_compat_keys[ $key ] ) ) { unset( self::$back_compat_keys[ $key ] ); } } /** * Determine whether the user exists in the database. * * @since 3.4.0 * @access public * * @return bool True if user exists in the database, false if not. */ public function exists() { return ! empty( $this->ID ); } /** * Retrieve the value of a property or meta key. * * Retrieves from the users and usermeta table. * * @since 3.3.0 * * @param string $key Property * @return mixed */ public function get( $key ) { return $this->__get( $key ); } /** * Determine whether a property or meta key is set * * Consults the users and usermeta tables. * * @since 3.3.0 * * @param string $key Property * @return bool */ public function has_prop( $key ) { return $this->__isset( $key ); } /** * Return an array representation. * * @since 3.5.0 * * @return array Array representation. */ public function to_array() { return get_object_vars( $this->data ); } /** * Set up capability object properties. * * Will set the value for the 'cap_key' property to current database table * prefix, followed by 'capabilities'. Will then check to see if the * property matching the 'cap_key' exists and is an array. If so, it will be * used. * * @access protected * @since 2.1.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $cap_key Optional capability key */ protected function _init_caps( $cap_key = '' ) { global $wpdb; if ( empty($cap_key) ) $this->cap_key = $wpdb->get_blog_prefix() . 'capabilities'; else $this->cap_key = $cap_key; $this->caps = get_user_meta( $this->ID, $this->cap_key, true ); if ( ! is_array( $this->caps ) ) $this->caps = array(); $this->get_role_caps(); } /** * Retrieve all of the role capabilities and merge with individual capabilities. * * All of the capabilities of the roles the user belongs to are merged with * the users individual roles. This also means that the user can be denied * specific roles that their role might have, but the specific user isn't * granted permission to. * * @since 2.0.0 * @access public * * @return array List of all capabilities for the user. */ public function get_role_caps() { $wp_roles = wp_roles(); //Filter out caps that are not role names and assign to $this->roles if ( is_array( $this->caps ) ) $this->roles = array_filter( array_keys( $this->caps ), array( $wp_roles, 'is_role' ) ); //Build $allcaps from role caps, overlay user's $caps $this->allcaps = array(); foreach ( (array) $this->roles as $role ) { $the_role = $wp_roles->get_role( $role ); $this->allcaps = array_merge( (array) $this->allcaps, (array) $the_role->capabilities ); } $this->allcaps = array_merge( (array) $this->allcaps, (array) $this->caps ); return $this->allcaps; } /** * Add role to user. * * Updates the user's meta data option with capabilities and roles. * * @since 2.0.0 * @access public * * @param string $role Role name. */ public function add_role( $role ) { if ( empty( $role ) ) { return; } $this->caps[$role] = true; update_user_meta( $this->ID, $this->cap_key, $this->caps ); $this->get_role_caps(); $this->update_user_level_from_caps(); /** * Fires immediately after the user has been given a new role. * * @since 4.3.0 * * @param int $user_id The user ID. * @param string $role The new role. */ do_action( 'add_user_role', $this->ID, $role ); } /** * Remove role from user. * * @since 2.0.0 * @access public * * @param string $role Role name. */ public function remove_role( $role ) { if ( !in_array($role, $this->roles) ) return; unset( $this->caps[$role] ); update_user_meta( $this->ID, $this->cap_key, $this->caps ); $this->get_role_caps(); $this->update_user_level_from_caps(); /** * Fires immediately after a role as been removed from a user. * * @since 4.3.0 * * @param int $user_id The user ID. * @param string $role The removed role. */ do_action( 'remove_user_role', $this->ID, $role ); } /** * Set the role of the user. * * This will remove the previous roles of the user and assign the user the * new one. You can set the role to an empty string and it will remove all * of the roles from the user. * * @since 2.0.0 * @access public * * @param string $role Role name. */ public function set_role( $role ) { if ( 1 == count( $this->roles ) && $role == current( $this->roles ) ) return; foreach ( (array) $this->roles as $oldrole ) unset( $this->caps[$oldrole] ); $old_roles = $this->roles; if ( !empty( $role ) ) { $this->caps[$role] = true; $this->roles = array( $role => true ); } else { $this->roles = false; } update_user_meta( $this->ID, $this->cap_key, $this->caps ); $this->get_role_caps(); $this->update_user_level_from_caps(); /** * Fires after the user's role has changed. * * @since 2.9.0 * @since 3.6.0 Added $old_roles to include an array of the user's previous roles. * * @param int $user_id The user ID. * @param string $role The new role. * @param array $old_roles An array of the user's previous roles. */ do_action( 'set_user_role', $this->ID, $role, $old_roles ); } /** * Choose the maximum level the user has. * * Will compare the level from the $item parameter against the $max * parameter. If the item is incorrect, then just the $max parameter value * will be returned. * * Used to get the max level based on the capabilities the user has. This * is also based on roles, so if the user is assigned the Administrator role * then the capability 'level_10' will exist and the user will get that * value. * * @since 2.0.0 * @access public * * @param int $max Max level of user. * @param string $item Level capability name. * @return int Max Level. */ public function level_reduction( $max, $item ) { if ( preg_match( '/^level_(10|[0-9])$/i', $item, $matches ) ) { $level = intval( $matches[1] ); return max( $max, $level ); } else { return $max; } } /** * Update the maximum user level for the user. * * Updates the 'user_level' user metadata (includes prefix that is the * database table prefix) with the maximum user level. Gets the value from * the all of the capabilities that the user has. * * @since 2.0.0 * @access public * * @global wpdb $wpdb WordPress database abstraction object. */ public function update_user_level_from_caps() { global $wpdb; $this->user_level = array_reduce( array_keys( $this->allcaps ), array( $this, 'level_reduction' ), 0 ); update_user_meta( $this->ID, $wpdb->get_blog_prefix() . 'user_level', $this->user_level ); } /** * Add capability and grant or deny access to capability. * * @since 2.0.0 * @access public * * @param string $cap Capability name. * @param bool $grant Whether to grant capability to user. */ public function add_cap( $cap, $grant = true ) { $this->caps[$cap] = $grant; update_user_meta( $this->ID, $this->cap_key, $this->caps ); $this->get_role_caps(); $this->update_user_level_from_caps(); } /** * Remove capability from user. * * @since 2.0.0 * @access public * * @param string $cap Capability name. */ public function remove_cap( $cap ) { if ( ! isset( $this->caps[ $cap ] ) ) { return; } unset( $this->caps[ $cap ] ); update_user_meta( $this->ID, $this->cap_key, $this->caps ); $this->get_role_caps(); $this->update_user_level_from_caps(); } /** * Remove all of the capabilities of the user. * * @since 2.1.0 * @access public * * @global wpdb $wpdb WordPress database abstraction object. */ public function remove_all_caps() { global $wpdb; $this->caps = array(); delete_user_meta( $this->ID, $this->cap_key ); delete_user_meta( $this->ID, $wpdb->get_blog_prefix() . 'user_level' ); $this->get_role_caps(); } /** * Whether user has capability or role name. * * While checking against particular roles in place of a capability is supported * in part, this practice is discouraged as it may produce unreliable results. * * @since 2.0.0 * @access public * * @see map_meta_cap() * * @param string $cap Capability name. * @param int $object_id,... Optional. ID of the specific object to check against if `$cap` is a "meta" cap. * "Meta" capabilities, e.g. 'edit_post', 'edit_user', etc., are capabilities used * by map_meta_cap() to map to other "primitive" capabilities, e.g. 'edit_posts', * 'edit_others_posts', etc. The parameter is accessed via func_get_args() and passed * to map_meta_cap(). * @return bool Whether the current user has the given capability. If `$cap` is a meta cap and `$object_id` is * passed, whether the current user has the given meta capability for the given object. */ public function has_cap( $cap ) { if ( is_numeric( $cap ) ) { _deprecated_argument( __FUNCTION__, '2.0.0', __('Usage of user levels by plugins and themes is deprecated. Use roles and capabilities instead.') ); $cap = $this->translate_level_to_cap( $cap ); } $args = array_slice( func_get_args(), 1 ); $args = array_merge( array( $cap, $this->ID ), $args ); $caps = call_user_func_array( 'map_meta_cap', $args ); // Multisite super admin has all caps by definition, Unless specifically denied. if ( is_multisite() && is_super_admin( $this->ID ) ) { if ( in_array('do_not_allow', $caps) ) return false; return true; } /** * Dynamically filter a user's capabilities. * * @since 2.0.0 * @since 3.7.0 Added the user object. * * @param array $allcaps An array of all the user's capabilities. * @param array $caps Actual capabilities for meta capability. * @param array $args Optional parameters passed to has_cap(), typically object ID. * @param WP_User $user The user object. */ $capabilities = apply_filters( 'user_has_cap', $this->allcaps, $caps, $args, $this ); // Everyone is allowed to exist. $capabilities['exist'] = true; // Must have ALL requested caps. foreach ( (array) $caps as $cap ) { if ( empty( $capabilities[ $cap ] ) ) return false; } return true; } /** * Convert numeric level to level capability name. * * Prepends 'level_' to level number. * * @since 2.0.0 * @access public * * @param int $level Level number, 1 to 10. * @return string */ public function translate_level_to_cap( $level ) { return 'level_' . $level; } /** * Set the site to operate on. Defaults to the current site. * * @since 3.0.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $blog_id Optional. Site ID, defaults to current site. */ public function for_blog( $blog_id = '' ) { global $wpdb; if ( ! empty( $blog_id ) ) $cap_key = $wpdb->get_blog_prefix( $blog_id ) . 'capabilities'; else $cap_key = ''; $this->_init_caps( $cap_key ); } }