1362 lines
33 KiB
PHP
1362 lines
33 KiB
PHP
<?php
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/**
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* WordPress Roles and Capabilities.
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*
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* @package WordPress
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* @subpackage User
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*/
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/**
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* WordPress User Roles.
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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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* <code>
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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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* </code>
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*
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* @since 2.0.0
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* @package WordPress
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* @subpackage User
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*/
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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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* @access public
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* @var array
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*/
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var $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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* @access public
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* @var array
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*/
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var $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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* @access public
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* @var array
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*/
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var $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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* @access public
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* @var string
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*/
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var $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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* @access public
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* @var bool
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*/
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var $use_db = true;
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/**
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* Constructor
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*
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* @since 2.0.0
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*/
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function __construct() {
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$this->_init();
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}
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/**
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* Set 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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* @access protected
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* @uses $wpdb Used to get the database prefix.
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* @global array $wp_user_roles Used to set the 'roles' property value.
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*/
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function _init () {
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global $wpdb, $wp_user_roles;
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$this->role_key = $wpdb->prefix . 'user_roles';
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if ( ! empty( $wp_user_roles ) ) {
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$this->roles = $wp_user_roles;
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$this->use_db = false;
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} else {
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$this->roles = get_option( $this->role_key );
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}
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if ( empty( $this->roles ) )
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return;
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$this->role_objects = array();
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$this->role_names = array();
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foreach ( (array) $this->roles as $role => $data ) {
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$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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/**
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* Add role name with capabilities to 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 a role a capability you set the value for that capability to false.
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*
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* @since 2.0.0
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* @access public
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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 array $capabilities List of role capabilities in the above format.
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* @return null|WP_Role WP_Role object if role is added, null if already exists.
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*/
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function add_role( $role, $display_name, $capabilities = array() ) {
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if ( isset( $this->roles[$role] ) )
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return;
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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, $this->roles );
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$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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* Remove role by name.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name.
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*/
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function remove_role( $role ) {
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if ( ! isset( $this->role_objects[$role] ) )
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return;
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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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/**
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* Add capability to role.
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*
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* @since 2.0.0
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* @access public
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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, default is true. Whether role is capable of performing capability.
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*/
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function add_cap( $role, $cap, $grant = true ) {
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$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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* Remove capability from role.
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*
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* @since 2.0.0
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* @access public
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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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function remove_cap( $role, $cap ) {
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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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* Retrieve role object by name.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name.
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* @return object|null Null, if role does not exist. WP_Role object, if found.
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*/
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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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* Retrieve list of role names.
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*
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* @since 2.0.0
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* @access public
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*
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* @return array List of role names.
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*/
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function get_names() {
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return $this->role_names;
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}
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/**
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* Whether 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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* @access public
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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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function is_role( $role )
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{
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return isset( $this->role_names[$role] );
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}
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}
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/**
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* WordPress Role class.
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*
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* @since 2.0.0
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* @package WordPress
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* @subpackage User
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*/
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class WP_Role {
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/**
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* Role name.
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*
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* @since 2.0.0
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* @access public
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* @var string
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*/
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var $name;
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/**
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* List of capabilities the role contains.
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*
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* @since 2.0.0
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* @access public
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* @var array
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*/
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var $capabilities;
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/**
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* Constructor - Set up object properties.
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*
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* The list of capabilities, must have the key as the name of the capability
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* and the value a boolean of whether it is granted to the role.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name.
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* @param array $capabilities List of capabilities.
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*/
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function __construct( $role, $capabilities ) {
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$this->name = $role;
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$this->capabilities = $capabilities;
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}
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/**
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* Assign role a capability.
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*
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* @see WP_Roles::add_cap() Method uses implementation for role.
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* @since 2.0.0
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* @access public
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*
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* @param string $cap Capability name.
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* @param bool $grant Whether role has capability privilege.
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*/
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function add_cap( $cap, $grant = true ) {
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global $wp_roles;
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if ( ! isset( $wp_roles ) )
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$wp_roles = new WP_Roles();
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$this->capabilities[$cap] = $grant;
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$wp_roles->add_cap( $this->name, $cap, $grant );
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}
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/**
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* Remove capability from role.
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*
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* This is a container for {@link WP_Roles::remove_cap()} to remove the
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* capability from the role. That is to say, that {@link
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* WP_Roles::remove_cap()} implements the functionality, but it also makes
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* sense to use this class, because you don't need to enter the role name.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $cap Capability name.
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*/
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function remove_cap( $cap ) {
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global $wp_roles;
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if ( ! isset( $wp_roles ) )
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$wp_roles = new WP_Roles();
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unset( $this->capabilities[$cap] );
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$wp_roles->remove_cap( $this->name, $cap );
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}
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/**
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* Whether role has capability.
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*
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* The capabilities is passed through the 'role_has_cap' filter. The first
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* parameter for the hook is the list of capabilities the class has
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* assigned. The second parameter is the capability name to look for. The
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* third and final parameter for the hook is the role name.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $cap Capability name.
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* @return bool True, if user has capability. False, if doesn't have capability.
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*/
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function has_cap( $cap ) {
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$capabilities = apply_filters( 'role_has_cap', $this->capabilities, $cap, $this->name );
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if ( !empty( $capabilities[$cap] ) )
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return $capabilities[$cap];
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else
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return false;
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}
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}
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/**
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* WordPress User class.
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*
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* @since 2.0.0
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* @package WordPress
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* @subpackage User
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*/
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class WP_User {
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/**
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* User data container.
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*
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* @since 2.0.0
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* @access private
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* @var array
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*/
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var $data;
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/**
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* The user's ID.
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*
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* @since 2.1.0
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* @access public
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* @var int
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*/
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var $ID = 0;
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/**
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* The individual capabilities the user has been given.
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*
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* @since 2.0.0
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* @access public
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* @var array
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*/
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var $caps = array();
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/**
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* User metadata option name.
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*
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* @since 2.0.0
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* @access public
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* @var string
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*/
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var $cap_key;
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/**
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* The roles the user is part of.
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*
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* @since 2.0.0
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* @access public
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* @var array
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*/
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var $roles = array();
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/**
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* All capabilities the user has, including individual and role based.
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*
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* @since 2.0.0
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* @access public
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* @var array
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*/
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var $allcaps = array();
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/**
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* The filter context applied to user data fields.
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*
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* @since 2.9.0
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* @access private
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* @var string
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*/
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var $filter = null;
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private static $back_compat_keys = array(
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'user_firstname' => 'first_name',
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'user_lastname' => 'last_name',
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'user_description' => 'description'
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);
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/**
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* Constructor
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*
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* Retrieves the userdata and passes it to {@link WP_User::init()}.
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*
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* @since 2.0.0
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* @access public
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*
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* @param int|string $id User's ID
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* @param string $name Optional. User's username
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* @param int $blog_id Optional Blog ID, defaults to current blog.
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* @return WP_User
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*/
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function __construct( $id = 0, $name = '', $blog_id = '' ) {
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if ( ! empty( $id ) && ! is_numeric( $id ) ) {
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$name = $id;
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$id = 0;
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}
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if ( $id )
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$data = self::get_data_by( 'id', $id );
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else
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$data = self::get_data_by( 'login', $name );
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if ( $data )
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$this->init( $data, $blog_id );
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}
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/**
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* Sets up object properties, including capabilities.
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*
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* @param object $data User DB row object
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* @param int $blog_id Optional. The blog id to initialize for
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*/
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function init( $data, $blog_id = '' ) {
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$this->data = $data;
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$this->ID = (int) $data->ID;
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$this->for_blog( $blog_id );
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}
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/**
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* Return only the main user fields
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*
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* @since 3.3.0
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*
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* @param string $field The field to query against: 'id', 'slug', 'email' or 'login'
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* @param string|int $value The field value
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*/
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static function get_data_by( $field, $value ) {
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global $wpdb;
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if ( 'id' == $field )
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$value = absint( $value );
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else
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$value = trim( $value );
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if ( !$value )
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return false;
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switch ( $field ) {
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case 'id':
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$user_id = $value;
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$db_field = 'ID';
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break;
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case 'slug':
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$user_id = wp_cache_get($value, 'userslugs');
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$db_field = 'user_nicename';
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break;
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case 'email':
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$user_id = wp_cache_get($value, 'useremail');
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$db_field = 'user_email';
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break;
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case 'login':
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$value = sanitize_user( $value );
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$user_id = wp_cache_get($value, 'userlogins');
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$db_field = 'user_login';
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break;
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default:
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return false;
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}
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if ( false !== $user_id ) {
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if ( $user = wp_cache_get( $user_id, 'users' ) )
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return $user;
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}
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if ( !$user = $wpdb->get_row( $wpdb->prepare(
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"SELECT * FROM $wpdb->users WHERE $db_field = %s", $value
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) ) )
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return false;
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update_user_caches( $user );
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return $user;
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}
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|
|
|
/**
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* Magic method for checking the existence of a certain custom field
|
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*
|
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* @since 3.3.0
|
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*/
|
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function __isset( $key ) {
|
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if ( 'id' == $key ) {
|
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_deprecated_argument( 'WP_User->id', '2.1', __( 'Use <code>WP_User->ID</code> instead.' ) );
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$key = 'ID';
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}
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if ( isset( $this->data->$key ) )
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return true;
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|
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if ( isset( self::$back_compat_keys[ $key ] ) )
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$key = self::$back_compat_keys[ $key ];
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return metadata_exists( 'user', $this->ID, $key );
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}
|
|
|
|
/**
|
|
* Magic method for accessing custom fields
|
|
*
|
|
* @since 3.3.0
|
|
*/
|
|
function __get( $key ) {
|
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if ( 'id' == $key ) {
|
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_deprecated_argument( 'WP_User->id', '2.1', __( 'Use <code>WP_User->ID</code> instead.' ) );
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return $this->ID;
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}
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|
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if ( isset( $this->data->$key ) ) {
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$value = $this->data->$key;
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} else {
|
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if ( isset( self::$back_compat_keys[ $key ] ) )
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$key = self::$back_compat_keys[ $key ];
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$value = get_user_meta( $this->ID, $key, true );
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}
|
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|
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if ( $this->filter ) {
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$value = sanitize_user_field( $key, $value, $this->ID, $this->filter );
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}
|
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|
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return $value;
|
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}
|
|
|
|
/**
|
|
* Magic method for setting custom fields
|
|
*
|
|
* @since 3.3.0
|
|
*/
|
|
function __set( $key, $value ) {
|
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if ( 'id' == $key ) {
|
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_deprecated_argument( 'WP_User->id', '2.1', __( 'Use <code>WP_User->ID</code> instead.' ) );
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$this->ID = $value;
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return;
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}
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|
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$this->data->$key = $value;
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}
|
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|
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/**
|
|
* Retrieve the value of a property or meta key.
|
|
*
|
|
* Retrieves from the users and usermeta table.
|
|
*
|
|
* @since 3.3.0
|
|
*
|
|
* @param string $key Property
|
|
*/
|
|
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
|
|
*/
|
|
function has_prop( $key ) {
|
|
return $this->__isset( $key );
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @since 2.1.0
|
|
*
|
|
* @param string $cap_key Optional capability key
|
|
* @access protected
|
|
*/
|
|
function _init_caps( $cap_key = '' ) {
|
|
global $wpdb;
|
|
|
|
if ( empty($cap_key) )
|
|
$this->cap_key = $wpdb->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
|
|
*/
|
|
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 );
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
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.
|
|
*/
|
|
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.
|
|
*/
|
|
function set_role( $role ) {
|
|
foreach ( (array) $this->roles as $oldrole )
|
|
unset( $this->caps[$oldrole] );
|
|
|
|
if ( 1 == count( $this->roles ) && $role == $this->roles[0] )
|
|
return;
|
|
|
|
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();
|
|
do_action( 'set_user_role', $this->ID, $role );
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
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
|
|
*/
|
|
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->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.
|
|
*/
|
|
function add_cap( $cap, $grant = true ) {
|
|
$this->caps[$cap] = $grant;
|
|
update_user_meta( $this->ID, $this->cap_key, $this->caps );
|
|
}
|
|
|
|
/**
|
|
* Remove capability from user.
|
|
*
|
|
* @since 2.0.0
|
|
* @access public
|
|
*
|
|
* @param string $cap Capability name.
|
|
*/
|
|
function remove_cap( $cap ) {
|
|
if ( empty( $this->caps[$cap] ) )
|
|
return;
|
|
unset( $this->caps[$cap] );
|
|
update_user_meta( $this->ID, $this->cap_key, $this->caps );
|
|
}
|
|
|
|
/**
|
|
* Remove all of the capabilities of the user.
|
|
*
|
|
* @since 2.1.0
|
|
* @access public
|
|
*/
|
|
function remove_all_caps() {
|
|
global $wpdb;
|
|
$this->caps = array();
|
|
delete_user_meta( $this->ID, $this->cap_key );
|
|
delete_user_meta( $this->ID, $wpdb->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 post.
|
|
*
|
|
* @since 2.0.0
|
|
* @access public
|
|
*
|
|
* @param string|int $cap Capability or role name to search.
|
|
* @param int $post_id Optional. Post ID to check capability against specific post.
|
|
* @return bool True, if user has capability; false, if user does not have capability.
|
|
*/
|
|
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;
|
|
}
|
|
|
|
// Must have ALL requested caps
|
|
$capabilities = apply_filters( 'user_has_cap', $this->allcaps, $caps, $args );
|
|
$capabilities['exist'] = true; // Everyone is allowed to exist
|
|
foreach ( (array) $caps as $cap ) {
|
|
//echo "Checking cap $cap<br />";
|
|
if ( empty( $capabilities[$cap] ) || !$capabilities[$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
|
|
*/
|
|
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.
|
|
*/
|
|
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':
|
|
// Allow user to edit itself
|
|
if ( isset( $args[0] ) && $user_id == $args[0] )
|
|
break;
|
|
// Fall through
|
|
case 'edit_users':
|
|
// 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'; // Explicit due to primitive fall through
|
|
break;
|
|
case 'delete_post':
|
|
case 'delete_page':
|
|
$author_data = get_userdata( $user_id );
|
|
$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 ( '' != $post->post_author ) {
|
|
$post_author_data = get_userdata( $post->post_author );
|
|
} else {
|
|
// No author set yet, so default to current user for cap checks.
|
|
$post_author_data = $author_data;
|
|
}
|
|
|
|
// If the user is the author...
|
|
if ( is_object( $post_author_data ) && $user_id == $post_author_data->ID ) {
|
|
// 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':
|
|
$author_data = get_userdata( $user_id );
|
|
$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 ( 'edit_post' == $cap )
|
|
$cap = $post_type->cap->$cap;
|
|
break;
|
|
}
|
|
|
|
if ( '' != $post->post_author ) {
|
|
$post_author_data = get_userdata( $post->post_author );
|
|
} else {
|
|
// No author set yet, so default to current user for cap checks.
|
|
$post_author_data = $author_data;
|
|
}
|
|
|
|
//echo "current user id : $user_id, post author id: " . $post_author_data->ID . "<br />";
|
|
// If the user is the author...
|
|
if ( is_object( $post_author_data ) && $user_id == $post_author_data->ID ) {
|
|
// 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':
|
|
$author_data = get_userdata( $user_id );
|
|
$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;
|
|
}
|
|
|
|
if ( 'private' != $post->post_status ) {
|
|
$caps[] = $post_type->cap->read;
|
|
break;
|
|
}
|
|
|
|
if ( '' != $post->post_author ) {
|
|
$post_author_data = get_userdata( $post->post_author );
|
|
} else {
|
|
// No author set yet, so default to current user for cap checks.
|
|
$post_author_data = $author_data;
|
|
}
|
|
|
|
if ( is_object( $post_author_data ) && $user_id == $post_author_data->ID )
|
|
$caps[] = $post_type->cap->read;
|
|
else
|
|
$caps[] = $post_type->cap->read_private_posts;
|
|
break;
|
|
case 'edit_post_meta':
|
|
case 'delete_post_meta':
|
|
case 'add_post_meta':
|
|
$post = get_post( $args[0] );
|
|
$post_type_object = get_post_type_object( $post->post_type );
|
|
$caps = map_meta_cap( $post_type_object->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}" ) ) {
|
|
$allowed = apply_filters( "auth_post_meta_{$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] );
|
|
$post = get_post( $comment->comment_post_ID );
|
|
$post_type_object = get_post_type_object( $post->post_type );
|
|
|
|
$caps = map_meta_cap( $post_type_object->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 'edit_files':
|
|
case 'edit_plugins':
|
|
case 'edit_themes':
|
|
if ( defined('DISALLOW_FILE_EDIT') && DISALLOW_FILE_EDIT ) {
|
|
$caps[] = 'do_not_allow';
|
|
break;
|
|
}
|
|
// Fall through if not DISALLOW_FILE_EDIT.
|
|
case 'update_plugins':
|
|
case 'delete_plugins':
|
|
case 'install_plugins':
|
|
case 'update_themes':
|
|
case 'delete_themes':
|
|
case 'install_themes':
|
|
case 'update_core':
|
|
// Disallow anything that creates, deletes, or edits core, plugin, or theme files.
|
|
// Files in uploads are excepted.
|
|
if ( defined('DISALLOW_FILE_MODS') && DISALLOW_FILE_MODS ) {
|
|
$caps[] = 'do_not_allow';
|
|
break;
|
|
}
|
|
// Fall through if not DISALLOW_FILE_MODS.
|
|
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';
|
|
break;
|
|
}
|
|
// Fall through if not DISALLOW_UNFILTERED_HTML
|
|
case 'delete_user':
|
|
case 'delete_users':
|
|
// If multisite these caps are allowed only for super admins.
|
|
if ( is_multisite() && !is_super_admin( $user_id ) ) {
|
|
$caps[] = 'do_not_allow';
|
|
} else {
|
|
if ( 'delete_user' == $cap )
|
|
$cap = 'delete_users';
|
|
$caps[] = $cap;
|
|
}
|
|
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;
|
|
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;
|
|
}
|
|
|
|
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 ) {
|
|
$current_user = wp_get_current_user();
|
|
|
|
if ( empty( $current_user ) )
|
|
return false;
|
|
|
|
// Create new object to avoid stomping the global current_user.
|
|
$user = new WP_User( $current_user->ID) ;
|
|
|
|
// Set the blog id. @todo add blog id arg to WP_User constructor?
|
|
$user->for_blog( $blog_id );
|
|
|
|
$args = array_slice( func_get_args(), 2 );
|
|
$args = array_merge( array( $capability ), $args );
|
|
|
|
return call_user_func_array( array( &$user, 'has_cap' ), $args );
|
|
}
|
|
|
|
/**
|
|
* 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 = new WP_User( $post->post_author );
|
|
|
|
if ( empty( $author->ID ) )
|
|
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 = new WP_User( $user );
|
|
|
|
if ( ! $user || ! $user->ID )
|
|
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 object
|
|
*/
|
|
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 null|WP_Role 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.
|
|
* @return null
|
|
*/
|
|
function remove_role( $role ) {
|
|
global $wp_roles;
|
|
|
|
if ( ! isset( $wp_roles ) )
|
|
$wp_roles = new WP_Roles();
|
|
|
|
return $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 = new WP_User( $user_id );
|
|
else
|
|
$user = wp_get_current_user();
|
|
|
|
if ( empty( $user->ID ) )
|
|
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;
|
|
}
|
|
|
|
?>
|