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<?php
/**
* 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 int $user_level
* @property string $display_name
* @property string $spam
* @property string $deleted
* @property string $locale
*/
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.' ),
'<code>WP_User->ID</code>'
)
);
$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.' ),
'<code>WP_User->ID</code>'
)
);
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.' ),
'<code>WP_User->ID</code>'
)
);
$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.' ),
'<code>WP_User->ID</code>'
)
);
}
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 );
}
}
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