488 lines
13 KiB
PHP
488 lines
13 KiB
PHP
<?php
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class WP_Roles {
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var $roles;
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var $role_objects = array();
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var $role_names = array();
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var $role_key;
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var $use_db = true;
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function WP_Roles() {
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$this->_init();
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}
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function _init () {
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global $wpdb;
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global $wp_user_roles;
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$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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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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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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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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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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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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function get_names() {
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return $this->role_names;
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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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class WP_Role {
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var $name;
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var $capabilities;
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function WP_Role( $role, $capabilities ) {
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$this->name = $role;
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$this->capabilities = $capabilities;
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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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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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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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class WP_User {
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var $data;
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var $ID = 0;
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var $id = 0; // Deprecated, use $ID instead.
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var $caps = array();
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var $cap_key;
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var $roles = array();
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var $allcaps = array();
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function WP_User( $id, $name = '' ) {
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if ( empty( $id ) && empty( $name ) )
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return;
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if ( ! is_numeric( $id ) ) {
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$name = $id;
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$id = 0;
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}
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if ( ! empty( $id ) )
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$this->data = get_userdata( $id );
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else
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$this->data = get_userdatabylogin( $name );
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if ( empty( $this->data->ID ) )
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return;
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foreach ( get_object_vars( $this->data ) as $key => $value ) {
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$this->{$key} = $value;
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}
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$this->id = $this->ID;
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$this->_init_caps();
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}
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function _init_caps() {
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global $wpdb;
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$this->cap_key = $wpdb->prefix . 'capabilities';
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$this->caps = &$this->{$this->cap_key};
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if ( ! is_array( $this->caps ) )
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$this->caps = array();
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$this->get_role_caps();
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}
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function get_role_caps() {
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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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//Filter out caps that are not role names and assign to $this->roles
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if ( is_array( $this->caps ) )
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$this->roles = array_filter( array_keys( $this->caps ), array( &$wp_roles, 'is_role' ) );
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//Build $allcaps from role caps, overlay user's $caps
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$this->allcaps = array();
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foreach ( (array) $this->roles as $role ) {
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$role = $wp_roles->get_role( $role );
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$this->allcaps = array_merge( $this->allcaps, $role->capabilities );
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}
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$this->allcaps = array_merge( $this->allcaps, $this->caps );
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}
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function add_role( $role ) {
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$this->caps[$role] = true;
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update_usermeta( $this->ID, $this->cap_key, $this->caps );
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$this->get_role_caps();
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$this->update_user_level_from_caps();
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}
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function remove_role( $role ) {
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if ( empty( $this->roles[$role] ) || ( count( $this->roles ) <= 1 ) )
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return;
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unset( $this->caps[$role] );
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update_usermeta( $this->ID, $this->cap_key, $this->caps );
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$this->get_role_caps();
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}
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function set_role( $role ) {
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foreach ( (array) $this->roles as $oldrole )
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unset( $this->caps[$oldrole] );
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if ( !empty( $role ) ) {
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$this->caps[$role] = true;
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$this->roles = array( $role => true );
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} else {
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$this->roles = false;
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}
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update_usermeta( $this->ID, $this->cap_key, $this->caps );
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$this->get_role_caps();
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$this->update_user_level_from_caps();
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}
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function level_reduction( $max, $item ) {
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if ( preg_match( '/^level_(10|[0-9])$/i', $item, $matches ) ) {
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$level = intval( $matches[1] );
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return max( $max, $level );
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} else {
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return $max;
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}
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}
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function update_user_level_from_caps() {
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global $wpdb;
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$this->user_level = array_reduce( array_keys( $this->allcaps ), array( &$this, 'level_reduction' ), 0 );
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update_usermeta( $this->ID, $wpdb->prefix.'user_level', $this->user_level );
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}
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function add_cap( $cap, $grant = true ) {
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$this->caps[$cap] = $grant;
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update_usermeta( $this->ID, $this->cap_key, $this->caps );
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}
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function remove_cap( $cap ) {
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if ( empty( $this->caps[$cap] ) ) return;
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unset( $this->caps[$cap] );
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update_usermeta( $this->ID, $this->cap_key, $this->caps );
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}
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function remove_all_caps() {
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global $wpdb;
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$this->caps = array();
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update_usermeta( $this->ID, $this->cap_key, '' );
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update_usermeta( $this->ID, $wpdb->prefix.'user_level', '' );
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$this->get_role_caps();
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}
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// has_cap( capability_or_role_name ) or
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// has_cap( 'edit_post', post_id )
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function has_cap( $cap ) {
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if ( is_numeric( $cap ) )
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$cap = $this->translate_level_to_cap( $cap );
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$args = array_slice( func_get_args(), 1 );
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$args = array_merge( array( $cap, $this->ID ), $args );
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$caps = call_user_func_array( 'map_meta_cap', $args );
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// Must have ALL requested caps
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$capabilities = apply_filters( 'user_has_cap', $this->allcaps, $caps, $args );
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foreach ( (array) $caps as $cap ) {
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//echo "Checking cap $cap<br />";
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if ( empty( $capabilities[$cap] ) || !$capabilities[$cap] )
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return false;
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}
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return true;
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}
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function translate_level_to_cap( $level ) {
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return 'level_' . $level;
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}
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}
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// Map meta capabilities to primitive capabilities.
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function map_meta_cap( $cap, $user_id ) {
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$args = array_slice( func_get_args(), 2 );
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$caps = array();
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switch ( $cap ) {
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case 'delete_user':
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$caps[] = 'delete_users';
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break;
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case 'edit_user':
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if ( !isset( $args[0] ) || $user_id != $args[0] ) {
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$caps[] = 'edit_users';
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}
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break;
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case 'delete_post':
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$author_data = get_userdata( $user_id );
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//echo "post ID: {$args[0]}<br />";
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$post = get_post( $args[0] );
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if ( 'page' == $post->post_type ) {
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$args = array_merge( array( 'delete_page', $user_id ), $args );
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return call_user_func_array( 'map_meta_cap', $args );
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}
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$post_author_data = get_userdata( $post->post_author );
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//echo "current user id : $user_id, post author id: " . $post_author_data->ID . "<br />";
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// If the user is the author...
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if ( $user_id == $post_author_data->ID ) {
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// If the post is published...
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if ( 'publish' == $post->post_status )
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$caps[] = 'delete_published_posts';
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else
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// If the post is draft...
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$caps[] = 'delete_posts';
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} else {
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// The user is trying to edit someone else's post.
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$caps[] = 'delete_others_posts';
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// The post is published, extra cap required.
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if ( 'publish' == $post->post_status )
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$caps[] = 'delete_published_posts';
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elseif ( 'private' == $post->post_status )
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$caps[] = 'delete_private_posts';
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}
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break;
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case 'delete_page':
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$author_data = get_userdata( $user_id );
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//echo "post ID: {$args[0]}<br />";
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$page = get_page( $args[0] );
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$page_author_data = get_userdata( $page->post_author );
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//echo "current user id : $user_id, page author id: " . $page_author_data->ID . "<br />";
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// If the user is the author...
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if ( $user_id == $page_author_data->ID ) {
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// If the page is published...
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if ( $page->post_status == 'publish' )
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$caps[] = 'delete_published_pages';
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else
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// If the page is draft...
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$caps[] = 'delete_pages';
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} else {
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// The user is trying to edit someone else's page.
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$caps[] = 'delete_others_pages';
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// The page is published, extra cap required.
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if ( $page->post_status == 'publish' )
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$caps[] = 'delete_published_pages';
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elseif ( $page->post_status == 'private' )
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$caps[] = 'delete_private_pages';
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}
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break;
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// edit_post breaks down to edit_posts, edit_published_posts, or
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// edit_others_posts
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case 'edit_post':
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$author_data = get_userdata( $user_id );
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//echo "post ID: {$args[0]}<br />";
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$post = get_post( $args[0] );
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if ( 'page' == $post->post_type ) {
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$args = array_merge( array( 'edit_page', $user_id ), $args );
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return call_user_func_array( 'map_meta_cap', $args );
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}
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$post_author_data = get_userdata( $post->post_author );
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//echo "current user id : $user_id, post author id: " . $post_author_data->ID . "<br />";
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// If the user is the author...
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if ( $user_id == $post_author_data->ID ) {
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// If the post is published...
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if ( 'publish' == $post->post_status )
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$caps[] = 'edit_published_posts';
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else
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// If the post is draft...
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$caps[] = 'edit_posts';
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} else {
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// The user is trying to edit someone else's post.
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$caps[] = 'edit_others_posts';
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// The post is published, extra cap required.
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if ( 'publish' == $post->post_status )
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$caps[] = 'edit_published_posts';
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elseif ( 'private' == $post->post_status )
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$caps[] = 'edit_private_posts';
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}
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break;
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case 'edit_page':
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$author_data = get_userdata( $user_id );
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//echo "post ID: {$args[0]}<br />";
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$page = get_page( $args[0] );
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$page_author_data = get_userdata( $page->post_author );
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//echo "current user id : $user_id, page author id: " . $page_author_data->ID . "<br />";
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// If the user is the author...
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if ( $user_id == $page_author_data->ID ) {
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// If the page is published...
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if ( 'publish' == $page->post_status )
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$caps[] = 'edit_published_pages';
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else
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// If the page is draft...
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$caps[] = 'edit_pages';
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} else {
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// The user is trying to edit someone else's page.
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$caps[] = 'edit_others_pages';
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// The page is published, extra cap required.
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if ( 'publish' == $page->post_status )
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$caps[] = 'edit_published_pages';
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elseif ( 'private' == $page->post_status )
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$caps[] = 'edit_private_pages';
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}
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break;
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case 'read_post':
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$post = get_post( $args[0] );
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if ( 'page' == $post->post_type ) {
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$args = array_merge( array( 'read_page', $user_id ), $args );
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return call_user_func_array( 'map_meta_cap', $args );
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}
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if ( 'private' != $post->post_status ) {
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$caps[] = 'read';
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break;
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}
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$author_data = get_userdata( $user_id );
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$post_author_data = get_userdata( $post->post_author );
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if ( $user_id == $post_author_data->ID )
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$caps[] = 'read';
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else
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$caps[] = 'read_private_posts';
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break;
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case 'read_page':
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$page = get_page( $args[0] );
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if ( 'private' != $page->post_status ) {
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$caps[] = 'read';
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break;
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}
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$author_data = get_userdata( $user_id );
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$page_author_data = get_userdata( $page->post_author );
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if ( $user_id == $page_author_data->ID )
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$caps[] = 'read';
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else
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$caps[] = 'read_private_pages';
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break;
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default:
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// If no meta caps match, return the original cap.
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$caps[] = $cap;
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}
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return $caps;
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}
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// Capability checking wrapper around the global $current_user object.
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function current_user_can( $capability ) {
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$current_user = wp_get_current_user();
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if ( empty( $current_user ) )
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return false;
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$args = array_slice( func_get_args(), 1 );
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$args = array_merge( array( $capability ), $args );
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return call_user_func_array( array( &$current_user, 'has_cap' ), $args );
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}
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// Convenience wrappers around $wp_roles.
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function get_role( $role ) {
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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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return $wp_roles->get_role( $role );
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}
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function add_role( $role, $display_name, $capabilities = array() ) {
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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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return $wp_roles->add_role( $role, $display_name, $capabilities );
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}
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function remove_role( $role ) {
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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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return $wp_roles->remove_role( $role );
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}
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?>
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