Viewing file:  capabilities.php (39.1 KB) -rw-rw-rw-
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
<?php
/**
* WordPress Roles and Capabilities.
*
* @package WordPress
* @subpackage User
*/
/**
* WordPress User Roles.
*
* 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
* @package WordPress
* @subpackage User
*/
class WP_Roles {
/**
* List of roles and capabilities.
*
* @since 2.0.0
* @access public
* @var array
*/
public $roles;
/**
* List of the role objects.
*
* @since 2.0.0
* @access public
* @var array
*/
public $role_objects = array();
/**
* List of role names.
*
* @since 2.0.0
* @access public
* @var array
*/
public $role_names = array();
/**
* Option name for storing role list.
*
* @since 2.0.0
* @access public
* @var string
*/
public $role_key;
/**
* Whether to use the database for retrieval and storage.
*
* @since 2.1.0
* @access public
* @var bool
*/
public $use_db = true;
/**
* Constructor
*
* @since 2.0.0
*/
public function __construct() {
$this->_init();
}
/**
* Make private/protected methods readable for backwards compatibility.
*
* @since 4.0.0
* @access public
*
* @param callable $name Method to call.
* @param array $arguments Arguments to pass when calling.
* @return mixed|bool Return value of the callback, false otherwise.
*/
public function __call( $name, $arguments ) {
if ( '_init' === $name ) {
return call_user_func_array( array( $this, $name ), $arguments );
}
return false;
}
/**
* Set 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
* @access protected
*
* @global wpdb $wpdb WordPress database abstraction object.
* @global array $wp_user_roles Used to set the 'roles' property value.
*/
protected function _init() {
global $wpdb, $wp_user_roles;
$this->role_key = $wpdb->get_blog_prefix() . 'user_roles';
if ( ! empty( $wp_user_roles ) ) {
$this->roles = $wp_user_roles;
$this->use_db = false;
} else {
$this->roles = get_option( $this->role_key );
}
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'];
}
}
/**
* Reinitialize the object
*
* Recreates the role objects. This is typically called only by switch_to_blog()
* after switching wpdb to a new blog ID.
*
* @since 3.5.0
* @access public
*/
public function reinit() {
// There is no need to reinit if using the wp_user_roles global.
if ( ! $this->use_db )
return;
global $wpdb;
// Duplicated from _init() to avoid an extra function call.
$this->role_key = $wpdb->get_blog_prefix() . 'user_roles';
$this->roles = get_option( $this->role_key );
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'];
}
}
/**
* Add role name with capabilities to 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 a role a capability you set the value for that capability to false.
*
* @since 2.0.0
* @access public
*
* @param string $role Role name.
* @param string $display_name Role display name.
* @param array $capabilities List of role capabilities in the above format.
* @return WP_Role|null WP_Role object if role is added, null if already exists.
*/
public function add_role( $role, $display_name, $capabilities = array() ) {
if ( 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 );
$this->role_objects[$role] = new WP_Role( $role, $capabilities );
$this->role_names[$role] = $display_name;
return $this->role_objects[$role];
}
/**
* Remove role by name.
*
* @since 2.0.0
* @access public
*
* @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' );
}
/**
* Add capability to role.
*
* @since 2.0.0
* @access public
*
* @param string $role Role name.
* @param string $cap Capability name.
* @param bool $grant Optional, default is true. Whether role is capable of performing capability.
*/
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 );
}
/**
* Remove capability from role.
*
* @since 2.0.0
* @access public
*
* @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 );
}
/**
* Retrieve role object by name.
*
* @since 2.0.0
* @access public
*
* @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;
}
/**
* Retrieve list of role names.
*
* @since 2.0.0
* @access public
*
* @return array List of role names.
*/
public function get_names() {
return $this->role_names;
}
/**
* Whether role name is currently in the list of available roles.
*
* @since 2.0.0
* @access public
*
* @param string $role Role name to look up.
* @return bool
*/
public function is_role( $role ) {
return isset( $this->role_names[$role] );
}
}
/**
* WordPress Role class.
*
* @since 2.0.0
* @package WordPress
* @subpackage User
*/
class WP_Role {
/**
* Role name.
*
* @since 2.0.0
* @access public
* @var string
*/
public $name;
/**
* List of capabilities the role contains.
*
* @since 2.0.0
* @access public
* @var array
*/
public $capabilities;
/**
* Constructor - Set up object properties.
*
* The list of capabilities, must have the key as the name of the capability
* and the value a boolean of whether it is granted to the role.
*
* @since 2.0.0
* @access public
*
* @param string $role Role name.
* @param array $capabilities List of capabilities.
*/
public function __construct( $role, $capabilities ) {
$this->name = $role;
$this->capabilities = $capabilities;
}
/**
* Assign role a capability.
*
* @see WP_Roles::add_cap() Method uses implementation for role.
* @since 2.0.0
* @access public
*
* @param string $cap Capability name.
* @param bool $grant Whether role has capability privilege.
*/
public function add_cap( $cap, $grant = true ) {
global $wp_roles;
if ( ! isset( $wp_roles ) )
$wp_roles = new WP_Roles();
$this->capabilities[$cap] = $grant;
$wp_roles->add_cap( $this->name, $cap, $grant );
}
/**
* Remove capability from role.
*
* This is a container for {@link WP_Roles::remove_cap()} to remove the
* capability from the role. That is to say, that {@link
* WP_Roles::remove_cap()} implements the functionality, but it also makes
* sense to use this class, because you don't need to enter the role name.
*
* @since 2.0.0
* @access public
*
* @param string $cap Capability name.
*/
public function remove_cap( $cap ) {
global $wp_roles;
if ( ! isset( $wp_roles ) )
$wp_roles = new WP_Roles();
unset( $this->capabilities[$cap] );
$wp_roles->remove_cap( $this->name, $cap );
}
/**
* Whether role has capability.
*
* The capabilities is passed through the 'role_has_cap' filter. The first
* parameter for the hook is the list of capabilities the class has
* assigned. The second parameter is the capability name to look for. The
* third and final parameter for the hook is the role name.
*
* @since 2.0.0
* @access public
*
* @param string $cap Capability name.
* @return bool True, if user has capability. False, if doesn't have capability.
*/
public function has_cap( $cap ) {
/**
* Filter which capabilities a role has.
*
* @since 2.0.0
*
* @param array $capabilities Array of role capabilities.
* @param string $cap Capability name.
* @param string $name Role name.
*/
$capabilities = apply_filters( 'role_has_cap', $this->capabilities, $cap, $this->name );
if ( !empty( $capabilities[$cap] ) )
return $capabilities[$cap];
else
return false;
}
}
/**
* WordPress User class.
*
* @since 2.0.0
* @package WordPress
* @subpackage User
*
* @property string $nickname
* @property string $user_description
* @property string $user_firstname
* @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;
private static $back_compat_keys;
/**
* Constructor
*
* Retrieves the userdata and passes it to {@link WP_User::init()}.
*
* @since 2.0.0
* @access public
*
* @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 Blog ID, defaults to current blog.
*/
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 blog 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
*
* @param string $field The field to query against: '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;
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;
}
/**
* Magic method for checking the existence of a certain custom field
*
* @since 3.3.0
* @param string $key
* @return bool
*/
public function __isset( $key ) {
if ( 'id' == $key ) {
_deprecated_argument( 'WP_User->id', '2.1', __( 'Use <code>WP_User->ID</code> instead.' ) );
$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
* @param string $key
* @return mixed
*/
public function __get( $key ) {
if ( 'id' == $key ) {
_deprecated_argument( 'WP_User->id', '2.1', __( 'Use <code>WP_User->ID</code> instead.' ) );
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 fields
*
* @since 3.3.0
*/
public function __set( $key, $value ) {
if ( 'id' == $key ) {
_deprecated_argument( 'WP_User->id', '2.1', __( 'Use <code>WP_User->ID</code> instead.' ) );
$this->ID = $value;
return;
}
$this->data->$key = $value;
}
/**
* 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
*/
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
*/
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
*
* @param string $cap_key Optional capability key
*/
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
* @uses $wp_roles
* @access public
*
* @return array List of all capabilities for the user.
*/
public function get_role_caps() {
global $wp_roles;
if ( ! isset( $wp_roles ) )
$wp_roles = new 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 ) {
$this->caps[$role] = true;
update_user_meta( $this->ID, $this->cap_key, $this->caps );
$this->get_role_caps();
$this->update_user_level_from_caps();
}
/**
* 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();
}
/**
* 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
*/
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
*/
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.
*
* This is useful for looking up whether the user has a specific role
* assigned to the user. The second optional parameter can also be used to
* check for capabilities against a specific object, such as a post or user.
*
* @since 2.0.0
* @access public
*
* @param string|int $cap Capability or role name to search.
* @return bool True, if user has capability; false, if user does not have capability.
*/
public function has_cap( $cap ) {
if ( is_numeric( $cap ) ) {
_deprecated_argument( __FUNCTION__, '2.0', __('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.
*/
// Must have ALL requested caps
$capabilities = apply_filters( 'user_has_cap', $this->allcaps, $caps, $args, $this );
$capabilities['exist'] = true; // Everyone is allowed to exist
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 blog to operate on. Defaults to the current blog.
*
* @since 3.0.0
*
* @param int $blog_id Optional Blog ID, defaults to current blog.
*/
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 );
}
}
/**
* Map meta capabilities to primitive capabilities.
*
* This does not actually compare whether the user ID has the actual capability,
* just what the capability or capabilities are. Meta capability list value can
* be 'delete_user', 'edit_user', 'remove_user', 'promote_user', 'delete_post',
* 'delete_page', 'edit_post', 'edit_page', 'read_post', or 'read_page'.
*
* @since 2.0.0
*
* @param string $cap Capability name.
* @param int $user_id User ID.
* @return array Actual capabilities for meta capability.
*/
function map_meta_cap( $cap, $user_id ) {
$args = array_slice( func_get_args(), 2 );
$caps = array();
switch ( $cap ) {
case 'remove_user':
$caps[] = 'remove_users';
break;
case 'promote_user':
$caps[] = 'promote_users';
break;
case 'edit_user':
case 'edit_users':
// Allow user to edit itself
if ( 'edit_user' == $cap && isset( $args[0] ) && $user_id == $args[0] )
break;
// If multisite these caps are allowed only for super admins.
if ( is_multisite() && !is_super_admin( $user_id ) )
$caps[] = 'do_not_allow';
else
$caps[] = 'edit_users'; // edit_user maps to edit_users.
break;
case 'delete_post':
case 'delete_page':
$post = get_post( $args[0] );
if ( 'revision' == $post->post_type ) {
$post = get_post( $post->post_parent );
}
$post_type = get_post_type_object( $post->post_type );
if ( ! $post_type->map_meta_cap ) {
$caps[] = $post_type->cap->$cap;
// Prior to 3.1 we would re-call map_meta_cap here.
if ( 'delete_post' == $cap )
$cap = $post_type->cap->$cap;
break;
}
// If the post author is set and the user is the author...
if ( $post->post_author && $user_id == $post->post_author ) {
// If the post is published...
if ( 'publish' == $post->post_status ) {
$caps[] = $post_type->cap->delete_published_posts;
} elseif ( 'trash' == $post->post_status ) {
if ( 'publish' == get_post_meta( $post->ID, '_wp_trash_meta_status', true ) ) {
$caps[] = $post_type->cap->delete_published_posts;
}
} else {
// If the post is draft...
$caps[] = $post_type->cap->delete_posts;
}
} else {
// The user is trying to edit someone else's post.
$caps[] = $post_type->cap->delete_others_posts;
// The post is published, extra cap required.
if ( 'publish' == $post->post_status ) {
$caps[] = $post_type->cap->delete_published_posts;
} elseif ( 'private' == $post->post_status ) {
$caps[] = $post_type->cap->delete_private_posts;
}
}
break;
// edit_post breaks down to edit_posts, edit_published_posts, or
// edit_others_posts
case 'edit_post':
case 'edit_page':
$post = get_post( $args[0] );
if ( empty( $post ) )
break;
if ( 'revision' == $post->post_type ) {
$post = get_post( $post->post_parent );
}
$post_type = get_post_type_object( $post->post_type );
if ( ! $post_type->map_meta_cap ) {
$caps[] = $post_type->cap->$cap;
// Prior to 3.1 we would re-call map_meta_cap here.
if ( 'edit_post' == $cap )
$cap = $post_type->cap->$cap;
break;
}
// If the post author is set and the user is the author...
if ( $post->post_author && $user_id == $post->post_author ) {
// If the post is published...
if ( 'publish' == $post->post_status ) {
$caps[] = $post_type->cap->edit_published_posts;
} elseif ( 'trash' == $post->post_status ) {
if ( 'publish' == get_post_meta( $post->ID, '_wp_trash_meta_status', true ) ) {
$caps[] = $post_type->cap->edit_published_posts;
}
} else {
// If the post is draft...
$caps[] = $post_type->cap->edit_posts;
}
} else {
// The user is trying to edit someone else's post.
$caps[] = $post_type->cap->edit_others_posts;
// The post is published, extra cap required.
if ( 'publish' == $post->post_status ) {
$caps[] = $post_type->cap->edit_published_posts;
} elseif ( 'private' == $post->post_status ) {
$caps[] = $post_type->cap->edit_private_posts;
}
}
break;
case 'read_post':
case 'read_page':
$post = get_post( $args[0] );
if ( 'revision' == $post->post_type ) {
$post = get_post( $post->post_parent );
}
$post_type = get_post_type_object( $post->post_type );
if ( ! $post_type->map_meta_cap ) {
$caps[] = $post_type->cap->$cap;
// Prior to 3.1 we would re-call map_meta_cap here.
if ( 'read_post' == $cap )
$cap = $post_type->cap->$cap;
break;
}
$status_obj = get_post_status_object( $post->post_status );
if ( $status_obj->public ) {
$caps[] = $post_type->cap->read;
break;
}
if ( $post->post_author && $user_id == $post->post_author ) {
$caps[] = $post_type->cap->read;
} elseif ( $status_obj->private ) {
$caps[] = $post_type->cap->read_private_posts;
} else {
$caps = map_meta_cap( 'edit_post', $user_id, $post->ID );
}
break;
case 'publish_post':
$post = get_post( $args[0] );
$post_type = get_post_type_object( $post->post_type );
$caps[] = $post_type->cap->publish_posts;
break;
case 'edit_post_meta':
case 'delete_post_meta':
case 'add_post_meta':
$post = get_post( $args[0] );
$caps = map_meta_cap( 'edit_post', $user_id, $post->ID );
$meta_key = isset( $args[ 1 ] ) ? $args[ 1 ] : false;
if ( $meta_key && has_filter( "auth_post_meta_{$meta_key}" ) ) {
/**
* Filter whether the user is allowed to add post meta to a post.
*
* The dynamic portion of the hook name, `$meta_key`, refers to the
* meta key passed to {@see map_meta_cap()}.
*
* @since 3.3.0
*
* @param bool $allowed Whether the user can add the post meta. Default false.
* @param string $meta_key The meta key.
* @param int $post_id Post ID.
* @param int $user_id User ID.
* @param string $cap Capability name.
* @param array $caps User capabilities.
*/
$allowed = apply_filters( "auth_post_meta_{$meta_key}", false, $meta_key, $post->ID, $user_id, $cap, $caps );
if ( ! $allowed )
$caps[] = $cap;
} elseif ( $meta_key && is_protected_meta( $meta_key, 'post' ) ) {
$caps[] = $cap;
}
break;
case 'edit_comment':
$comment = get_comment( $args[0] );
if ( empty( $comment ) )
break;
$post = get_post( $comment->comment_post_ID );
$caps = map_meta_cap( 'edit_post', $user_id, $post->ID );
break;
case 'unfiltered_upload':
if ( defined('ALLOW_UNFILTERED_UPLOADS') && ALLOW_UNFILTERED_UPLOADS && ( !is_multisite() || is_super_admin( $user_id ) ) )
$caps[] = $cap;
else
$caps[] = 'do_not_allow';
break;
case 'unfiltered_html' :
// Disallow unfiltered_html for all users, even admins and super admins.
if ( defined( 'DISALLOW_UNFILTERED_HTML' ) && DISALLOW_UNFILTERED_HTML )
$caps[] = 'do_not_allow';
elseif ( is_multisite() && ! is_super_admin( $user_id ) )
$caps[] = 'do_not_allow';
else
$caps[] = $cap;
break;
case 'edit_files':
case 'edit_plugins':
case 'edit_themes':
// Disallow the file editors.
if ( defined( 'DISALLOW_FILE_EDIT' ) && DISALLOW_FILE_EDIT )
$caps[] = 'do_not_allow';
elseif ( defined( 'DISALLOW_FILE_MODS' ) && DISALLOW_FILE_MODS )
$caps[] = 'do_not_allow';
elseif ( is_multisite() && ! is_super_admin( $user_id ) )
$caps[] = 'do_not_allow';
else
$caps[] = $cap;
break;
case 'update_plugins':
case 'delete_plugins':
case 'install_plugins':
case 'upload_plugins':
case 'update_themes':
case 'delete_themes':
case 'install_themes':
case 'upload_themes':
case 'update_core':
// Disallow anything that creates, deletes, or updates core, plugin, or theme files.
// Files in uploads are excepted.
if ( defined( 'DISALLOW_FILE_MODS' ) && DISALLOW_FILE_MODS ) {
$caps[] = 'do_not_allow';
} elseif ( is_multisite() && ! is_super_admin( $user_id ) ) {
$caps[] = 'do_not_allow';
} elseif ( 'upload_themes' === $cap ) {
$caps[] = 'install_themes';
} elseif ( 'upload_plugins' === $cap ) {
$caps[] = 'install_plugins';
} else {
$caps[] = $cap;
}
break;
case 'activate_plugins':
$caps[] = $cap;
if ( is_multisite() ) {
// update_, install_, and delete_ are handled above with is_super_admin().
$menu_perms = get_site_option( 'menu_items', array() );
if ( empty( $menu_perms['plugins'] ) )
$caps[] = 'manage_network_plugins';
}
break;
case 'delete_user':
case 'delete_users':
// If multisite only super admins can delete users.
if ( is_multisite() && ! is_super_admin( $user_id ) )
$caps[] = 'do_not_allow';
else
$caps[] = 'delete_users'; // delete_user maps to delete_users.
break;
case 'create_users':
if ( !is_multisite() )
$caps[] = $cap;
elseif ( is_super_admin() || get_site_option( 'add_new_users' ) )
$caps[] = $cap;
else
$caps[] = 'do_not_allow';
break;
case 'manage_links' :
if ( get_option( 'link_manager_enabled' ) )
$caps[] = $cap;
else
$caps[] = 'do_not_allow';
break;
case 'customize' :
$caps[] = 'edit_theme_options';
break;
case 'delete_site':
$caps[] = 'manage_options';
break;
default:
// Handle meta capabilities for custom post types.
$post_type_meta_caps = _post_type_meta_capabilities();
if ( isset( $post_type_meta_caps[ $cap ] ) ) {
$args = array_merge( array( $post_type_meta_caps[ $cap ], $user_id ), $args );
return call_user_func_array( 'map_meta_cap', $args );
}
// If no meta caps match, return the original cap.
$caps[] = $cap;
}
/**
* Filter a user's capabilities depending on specific context and/or privilege.
*
* @since 2.8.0
*
* @param array $caps Returns the user's actual capabilities.
* @param string $cap Capability name.
* @param int $user_id The user ID.
* @param array $args Adds the context to the cap. Typically the object ID.
*/
return apply_filters( 'map_meta_cap', $caps, $cap, $user_id, $args );
}
/**
* Whether current user has capability or role.
*
* @since 2.0.0
*
* @param string $capability Capability or role name.
* @return bool
*/
function current_user_can( $capability ) {
$current_user = wp_get_current_user();
if ( empty( $current_user ) )
return false;
$args = array_slice( func_get_args(), 1 );
$args = array_merge( array( $capability ), $args );
return call_user_func_array( array( $current_user, 'has_cap' ), $args );
}
/**
* Whether current user has a capability or role for a given blog.
*
* @since 3.0.0
*
* @param int $blog_id Blog ID
* @param string $capability Capability or role name.
* @return bool
*/
function current_user_can_for_blog( $blog_id, $capability ) {
$switched = is_multisite() ? switch_to_blog( $blog_id ) : false;
$current_user = wp_get_current_user();
if ( empty( $current_user ) ) {
if ( $switched ) {
restore_current_blog();
}
return false;
}
$args = array_slice( func_get_args(), 2 );
$args = array_merge( array( $capability ), $args );
$can = call_user_func_array( array( $current_user, 'has_cap' ), $args );
if ( $switched ) {
restore_current_blog();
}
return $can;
}
/**
* Whether author of supplied post has capability or role.
*
* @since 2.9.0
*
* @param int|object $post Post ID or post object.
* @param string $capability Capability or role name.
* @return bool
*/
function author_can( $post, $capability ) {
if ( !$post = get_post($post) )
return false;
$author = get_userdata( $post->post_author );
if ( ! $author )
return false;
$args = array_slice( func_get_args(), 2 );
$args = array_merge( array( $capability ), $args );
return call_user_func_array( array( $author, 'has_cap' ), $args );
}
/**
* Whether a particular user has capability or role.
*
* @since 3.1.0
*
* @param int|object $user User ID or object.
* @param string $capability Capability or role name.
* @return bool
*/
function user_can( $user, $capability ) {
if ( ! is_object( $user ) )
$user = get_userdata( $user );
if ( ! $user || ! $user->exists() )
return false;
$args = array_slice( func_get_args(), 2 );
$args = array_merge( array( $capability ), $args );
return call_user_func_array( array( $user, 'has_cap' ), $args );
}
/**
* Retrieve role object.
*
* @see WP_Roles::get_role() Uses method to retrieve role object.
* @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.
*/
function get_role( $role ) {
global $wp_roles;
if ( ! isset( $wp_roles ) )
$wp_roles = new WP_Roles();
return $wp_roles->get_role( $role );
}
/**
* Add role, if it does not exist.
*
* @see WP_Roles::add_role() Uses method to add role.
* @since 2.0.0
*
* @param string $role Role name.
* @param string $display_name Display name for role.
* @param array $capabilities List of capabilities, e.g. array( 'edit_posts' => true, 'delete_posts' => false );
* @return WP_Role|null WP_Role object if role is added, null if already exists.
*/
function add_role( $role, $display_name, $capabilities = array() ) {
global $wp_roles;
if ( ! isset( $wp_roles ) )
$wp_roles = new WP_Roles();
return $wp_roles->add_role( $role, $display_name, $capabilities );
}
/**
* Remove role, if it exists.
*
* @see WP_Roles::remove_role() Uses method to remove role.
* @since 2.0.0
*
* @param string $role Role name.
*/
function remove_role( $role ) {
global $wp_roles;
if ( ! isset( $wp_roles ) )
$wp_roles = new WP_Roles();
$wp_roles->remove_role( $role );
}
/**
* Retrieve a list of super admins.
*
* @since 3.0.0
*
* @uses $super_admins Super admins global variable, if set.
*
* @return array List of super admin logins
*/
function get_super_admins() {
global $super_admins;
if ( isset($super_admins) )
return $super_admins;
else
return get_site_option( 'site_admins', array('admin') );
}
/**
* Determine if user is a site admin.
*
* @since 3.0.0
*
* @param int $user_id (Optional) The ID of a user. Defaults to the current user.
* @return bool True if the user is a site admin.
*/
function is_super_admin( $user_id = false ) {
if ( ! $user_id || $user_id == get_current_user_id() )
$user = wp_get_current_user();
else
$user = get_userdata( $user_id );
if ( ! $user || ! $user->exists() )
return false;
if ( is_multisite() ) {
$super_admins = get_super_admins();
if ( is_array( $super_admins ) && in_array( $user->user_login, $super_admins ) )
return true;
} else {
if ( $user->has_cap('delete_users') )
return true;
}
return false;
}
|