--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/web/wp-includes/capabilities.php Wed Feb 03 15:37:20 2010 +0000
@@ -0,0 +1,1060 @@
+<?php
+/**
+ * WordPress Roles and Capabilities.
+ *
+ * @package WordPress
+ * @subpackage User
+ */
+
+/**
+ * WordPress User Roles.
+ *
+ * The role option is simple, the structure is organized by role name that store
+ * the name in value of the 'name' key. The capabilities are stored as an array
+ * in the value of the 'capability' key.
+ *
+ * <code>
+ * array (
+ * 'rolename' => array (
+ * 'name' => 'rolename',
+ * 'capabilities' => array()
+ * )
+ * )
+ * </code>
+ *
+ * @since 2.0.0
+ * @package WordPress
+ * @subpackage User
+ */
+class WP_Roles {
+ /**
+ * List of roles and capabilities.
+ *
+ * @since 2.0.0
+ * @access public
+ * @var array
+ */
+ var $roles;
+
+ /**
+ * List of the role objects.
+ *
+ * @since 2.0.0
+ * @access public
+ * @var array
+ */
+ var $role_objects = array();
+
+ /**
+ * List of role names.
+ *
+ * @since 2.0.0
+ * @access public
+ * @var array
+ */
+ var $role_names = array();
+
+ /**
+ * Option name for storing role list.
+ *
+ * @since 2.0.0
+ * @access public
+ * @var string
+ */
+ var $role_key;
+
+ /**
+ * Whether to use the database for retrieval and storage.
+ *
+ * @since 2.1.0
+ * @access public
+ * @var bool
+ */
+ var $use_db = true;
+
+ /**
+ * PHP4 Constructor - Call {@link WP_Roles::_init()} method.
+ *
+ * @since 2.0.0
+ * @access public
+ *
+ * @return WP_Roles
+ */
+ function WP_Roles() {
+ $this->_init();
+ }
+
+ /**
+ * Setup the object properties.
+ *
+ * The role key is set to the current prefix for the $wpdb object with
+ * 'user_roles' appended. If the $wp_user_roles global is set, then it will
+ * be used and the role option will not be updated or used.
+ *
+ * @since 2.1.0
+ * @access protected
+ * @uses $wpdb Used to get the database prefix.
+ * @global array $wp_user_roles Used to set the 'roles' property value.
+ */
+ function _init () {
+ global $wpdb;
+ global $wp_user_roles;
+ $this->role_key = $wpdb->prefix . 'user_roles';
+ if ( ! empty( $wp_user_roles ) ) {
+ $this->roles = $wp_user_roles;
+ $this->use_db = false;
+ } else {
+ $this->roles = get_option( $this->role_key );
+ }
+
+ if ( empty( $this->roles ) )
+ return;
+
+ $this->role_objects = array();
+ $this->role_names = array();
+ foreach ( (array) $this->roles as $role => $data ) {
+ $this->role_objects[$role] = new WP_Role( $role, $this->roles[$role]['capabilities'] );
+ $this->role_names[$role] = $this->roles[$role]['name'];
+ }
+ }
+
+ /**
+ * Add role name with capabilities to list.
+ *
+ * Updates the list of roles, if the role doesn't already exist.
+ *
+ * The capabilities are defined in the following format `array( 'read' => true );`
+ * To explicitly deny a role a capability you set the value for that capability to false.
+ *
+ * @since 2.0.0
+ * @access public
+ *
+ * @param string $role Role name.
+ * @param string $display_name Role display name.
+ * @param array $capabilities List of role capabilities in the above format.
+ * @return null|WP_Role WP_Role object if role is added, null if already exists.
+ */
+ function add_role( $role, $display_name, $capabilities = array() ) {
+ if ( isset( $this->roles[$role] ) )
+ return;
+
+ $this->roles[$role] = array(
+ 'name' => $display_name,
+ 'capabilities' => $capabilities
+ );
+ if ( $this->use_db )
+ update_option( $this->role_key, $this->roles );
+ $this->role_objects[$role] = new WP_Role( $role, $capabilities );
+ $this->role_names[$role] = $display_name;
+ return $this->role_objects[$role];
+ }
+
+ /**
+ * Remove role by name.
+ *
+ * @since 2.0.0
+ * @access public
+ *
+ * @param string $role Role name.
+ */
+ function remove_role( $role ) {
+ if ( ! isset( $this->role_objects[$role] ) )
+ return;
+
+ unset( $this->role_objects[$role] );
+ unset( $this->role_names[$role] );
+ unset( $this->roles[$role] );
+
+ if ( $this->use_db )
+ update_option( $this->role_key, $this->roles );
+ }
+
+ /**
+ * Add capability to role.
+ *
+ * @since 2.0.0
+ * @access public
+ *
+ * @param string $role Role name.
+ * @param string $cap Capability name.
+ * @param bool $grant Optional, default is true. Whether role is capable of performing capability.
+ */
+ function add_cap( $role, $cap, $grant = true ) {
+ $this->roles[$role]['capabilities'][$cap] = $grant;
+ if ( $this->use_db )
+ update_option( $this->role_key, $this->roles );
+ }
+
+ /**
+ * Remove capability from role.
+ *
+ * @since 2.0.0
+ * @access public
+ *
+ * @param string $role Role name.
+ * @param string $cap Capability name.
+ */
+ function remove_cap( $role, $cap ) {
+ unset( $this->roles[$role]['capabilities'][$cap] );
+ if ( $this->use_db )
+ update_option( $this->role_key, $this->roles );
+ }
+
+ /**
+ * Retrieve role object by name.
+ *
+ * @since 2.0.0
+ * @access public
+ *
+ * @param string $role Role name.
+ * @return object|null Null, if role does not exist. WP_Role object, if found.
+ */
+ function &get_role( $role ) {
+ if ( isset( $this->role_objects[$role] ) )
+ return $this->role_objects[$role];
+ else
+ return null;
+ }
+
+ /**
+ * Retrieve list of role names.
+ *
+ * @since 2.0.0
+ * @access public
+ *
+ * @return array List of role names.
+ */
+ function get_names() {
+ return $this->role_names;
+ }
+
+ /**
+ * Whether role name is currently in the list of available roles.
+ *
+ * @since 2.0.0
+ * @access public
+ *
+ * @param string $role Role name to look up.
+ * @return bool
+ */
+ function is_role( $role )
+ {
+ return isset( $this->role_names[$role] );
+ }
+}
+
+/**
+ * WordPress Role class.
+ *
+ * @since 2.0.0
+ * @package WordPress
+ * @subpackage User
+ */
+class WP_Role {
+ /**
+ * Role name.
+ *
+ * @since 2.0.0
+ * @access public
+ * @var string
+ */
+ var $name;
+
+ /**
+ * List of capabilities the role contains.
+ *
+ * @since 2.0.0
+ * @access public
+ * @var array
+ */
+ var $capabilities;
+
+ /**
+ * PHP4 Constructor - Setup object properties.
+ *
+ * The list of capabilities, must have the key as the name of the capability
+ * and the value a boolean of whether it is granted to the role or not.
+ *
+ * @since 2.0.0
+ * @access public
+ *
+ * @param string $role Role name.
+ * @param array $capabilities List of capabilities.
+ * @return WP_Role
+ */
+ function WP_Role( $role, $capabilities ) {
+ $this->name = $role;
+ $this->capabilities = $capabilities;
+ }
+
+ /**
+ * Assign role a capability.
+ *
+ * @see WP_Roles::add_cap() Method uses implementation for role.
+ * @since 2.0.0
+ * @access public
+ *
+ * @param string $cap Capability name.
+ * @param bool $grant Whether role has capability privilege.
+ */
+ function add_cap( $cap, $grant = true ) {
+ global $wp_roles;
+
+ if ( ! isset( $wp_roles ) )
+ $wp_roles = new WP_Roles();
+
+ $this->capabilities[$cap] = $grant;
+ $wp_roles->add_cap( $this->name, $cap, $grant );
+ }
+
+ /**
+ * Remove capability from role.
+ *
+ * This is a container for {@link WP_Roles::remove_cap()} to remove the
+ * capability from the role. That is to say, that {@link
+ * WP_Roles::remove_cap()} implements the functionality, but it also makes
+ * sense to use this class, because you don't need to enter the role name.
+ *
+ * @since 2.0.0
+ * @access public
+ *
+ * @param string $cap Capability name.
+ */
+ function remove_cap( $cap ) {
+ global $wp_roles;
+
+ if ( ! isset( $wp_roles ) )
+ $wp_roles = new WP_Roles();
+
+ unset( $this->capabilities[$cap] );
+ $wp_roles->remove_cap( $this->name, $cap );
+ }
+
+ /**
+ * Whether role has capability.
+ *
+ * The capabilities is passed through the 'role_has_cap' filter. The first
+ * parameter for the hook is the list of capabilities the class has
+ * assigned. The second parameter is the capability name to look for. The
+ * third and final parameter for the hook is the role name.
+ *
+ * @since 2.0.0
+ * @access public
+ *
+ * @param string $cap Capability name.
+ * @return bool True, if user has capability. False, if doesn't have capability.
+ */
+ function has_cap( $cap ) {
+ $capabilities = apply_filters( 'role_has_cap', $this->capabilities, $cap, $this->name );
+ if ( !empty( $capabilities[$cap] ) )
+ return $capabilities[$cap];
+ else
+ return false;
+ }
+
+}
+
+/**
+ * WordPress User class.
+ *
+ * @since 2.0.0
+ * @package WordPress
+ * @subpackage User
+ */
+class WP_User {
+ /**
+ * User data container.
+ *
+ * This will be set as properties of the object.
+ *
+ * @since 2.0.0
+ * @access private
+ * @var array
+ */
+ var $data;
+
+ /**
+ * The user's ID.
+ *
+ * @since 2.1.0
+ * @access public
+ * @var int
+ */
+ var $ID = 0;
+
+ /**
+ * The deprecated user's ID.
+ *
+ * @since 2.0.0
+ * @access public
+ * @deprecated Use WP_User::$ID
+ * @see WP_User::$ID
+ * @var int
+ */
+ var $id = 0;
+
+ /**
+ * The individual capabilities the user has been given.
+ *
+ * @since 2.0.0
+ * @access public
+ * @var array
+ */
+ var $caps = array();
+
+ /**
+ * User metadata option name.
+ *
+ * @since 2.0.0
+ * @access public
+ * @var string
+ */
+ var $cap_key;
+
+ /**
+ * The roles the user is part of.
+ *
+ * @since 2.0.0
+ * @access public
+ * @var array
+ */
+ var $roles = array();
+
+ /**
+ * All capabilities the user has, including individual and role based.
+ *
+ * @since 2.0.0
+ * @access public
+ * @var array
+ */
+ var $allcaps = array();
+
+ /**
+ * First name of the user.
+ *
+ * Created to prevent notices.
+ *
+ * @since 2.7.0
+ * @access public
+ * @var string
+ */
+ var $first_name = '';
+
+ /**
+ * Last name of the user.
+ *
+ * Created to prevent notices.
+ *
+ * @since 2.7.0
+ * @access public
+ * @var string
+ */
+ var $last_name = '';
+
+ /**
+ * The filter context applied to user data fields.
+ *
+ * @since 2.9.0
+ * @access private
+ * @var string
+ */
+ var $filter = null;
+
+ /**
+ * PHP4 Constructor - Sets up the object properties.
+ *
+ * Retrieves the userdata and then assigns all of the data keys to direct
+ * properties of the object. Calls {@link WP_User::_init_caps()} after
+ * setting up the object's user data properties.
+ *
+ * @since 2.0.0
+ * @access public
+ *
+ * @param int|string $id User's ID or username
+ * @param int $name Optional. User's username
+ * @return WP_User
+ */
+ function WP_User( $id, $name = '' ) {
+
+ if ( empty( $id ) && empty( $name ) )
+ return;
+
+ if ( ! is_numeric( $id ) ) {
+ $name = $id;
+ $id = 0;
+ }
+
+ if ( ! empty( $id ) )
+ $this->data = get_userdata( $id );
+ else
+ $this->data = get_userdatabylogin( $name );
+
+ if ( empty( $this->data->ID ) )
+ return;
+
+ foreach ( get_object_vars( $this->data ) as $key => $value ) {
+ $this->{$key} = $value;
+ }
+
+ $this->id = $this->ID;
+ $this->_init_caps();
+ }
+
+ /**
+ * Setup 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
+ * @access protected
+ */
+ function _init_caps() {
+ global $wpdb;
+ $this->cap_key = $wpdb->prefix . 'capabilities';
+ $this->caps = &$this->{$this->cap_key};
+ 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 ) {
+ $role =& $wp_roles->get_role( $role );
+ $this->allcaps = array_merge( (array) $this->allcaps, (array) $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_usermeta( $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 ( empty( $this->roles[$role] ) || ( count( $this->roles ) <= 1 ) )
+ return;
+ unset( $this->caps[$role] );
+ update_usermeta( $this->ID, $this->cap_key, $this->caps );
+ $this->get_role_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 ( !empty( $role ) ) {
+ $this->caps[$role] = true;
+ $this->roles = array( $role => true );
+ } else {
+ $this->roles = false;
+ }
+ update_usermeta( $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_usermeta( $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_usermeta( $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_usermeta( $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();
+ update_usermeta( $this->ID, $this->cap_key, '' );
+ update_usermeta( $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 specfic 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 ) )
+ $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 );
+ // Must have ALL requested caps
+ $capabilities = apply_filters( 'user_has_cap', $this->allcaps, $caps, $args );
+ 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;
+ }
+
+}
+
+/**
+ * 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', '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 'delete_user':
+ $caps[] = 'delete_users';
+ break;
+ case 'edit_user':
+ if ( !isset( $args[0] ) || $user_id != $args[0] ) {
+ $caps[] = 'edit_users';
+ }
+ break;
+ case 'delete_post':
+ $author_data = get_userdata( $user_id );
+ //echo "post ID: {$args[0]}<br />";
+ $post = get_post( $args[0] );
+ if ( 'page' == $post->post_type ) {
+ $args = array_merge( array( 'delete_page', $user_id ), $args );
+ return call_user_func_array( 'map_meta_cap', $args );
+ }
+
+ 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 ( $user_id == $post_author_data->ID ) {
+ // If the post is published...
+ if ( 'publish' == $post->post_status ) {
+ $caps[] = 'delete_published_posts';
+ } elseif ( 'trash' == $post->post_status ) {
+ if ('publish' == get_post_meta($post->ID, '_wp_trash_meta_status', true) )
+ $caps[] = 'delete_published_posts';
+ } else {
+ // If the post is draft...
+ $caps[] = 'delete_posts';
+ }
+ } else {
+ // The user is trying to edit someone else's post.
+ $caps[] = 'delete_others_posts';
+ // The post is published, extra cap required.
+ if ( 'publish' == $post->post_status )
+ $caps[] = 'delete_published_posts';
+ elseif ( 'private' == $post->post_status )
+ $caps[] = 'delete_private_posts';
+ }
+ break;
+ case 'delete_page':
+ $author_data = get_userdata( $user_id );
+ //echo "post ID: {$args[0]}<br />";
+ $page = get_page( $args[0] );
+ $page_author_data = get_userdata( $page->post_author );
+ //echo "current user id : $user_id, page author id: " . $page_author_data->ID . "<br />";
+ // If the user is the author...
+
+ if ('' != $page->post_author) {
+ $page_author_data = get_userdata( $page->post_author );
+ } else {
+ //No author set yet so default to current user for cap checks
+ $page_author_data = $author_data;
+ }
+
+ if ( $user_id == $page_author_data->ID ) {
+ // If the page is published...
+ if ( $page->post_status == 'publish' ) {
+ $caps[] = 'delete_published_pages';
+ } elseif ( 'trash' == $page->post_status ) {
+ if ('publish' == get_post_meta($page->ID, '_wp_trash_meta_status', true) )
+ $caps[] = 'delete_published_pages';
+ } else {
+ // If the page is draft...
+ $caps[] = 'delete_pages';
+ }
+ } else {
+ // The user is trying to edit someone else's page.
+ $caps[] = 'delete_others_pages';
+ // The page is published, extra cap required.
+ if ( $page->post_status == 'publish' )
+ $caps[] = 'delete_published_pages';
+ elseif ( $page->post_status == 'private' )
+ $caps[] = 'delete_private_pages';
+ }
+ break;
+ // edit_post breaks down to edit_posts, edit_published_posts, or
+ // edit_others_posts
+ case 'edit_post':
+ $author_data = get_userdata( $user_id );
+ //echo "post ID: {$args[0]}<br />";
+ $post = get_post( $args[0] );
+ if ( 'page' == $post->post_type ) {
+ $args = array_merge( array( 'edit_page', $user_id ), $args );
+ return call_user_func_array( 'map_meta_cap', $args );
+ }
+ $post_author_data = get_userdata( $post->post_author );
+ //echo "current user id : $user_id, post author id: " . $post_author_data->ID . "<br />";
+ // If the user is the author...
+ if ( $user_id == $post_author_data->ID ) {
+ // If the post is published...
+ if ( 'publish' == $post->post_status ) {
+ $caps[] = 'edit_published_posts';
+ } elseif ( 'trash' == $post->post_status ) {
+ if ('publish' == get_post_meta($post->ID, '_wp_trash_meta_status', true) )
+ $caps[] = 'edit_published_posts';
+ } else {
+ // If the post is draft...
+ $caps[] = 'edit_posts';
+ }
+ } else {
+ // The user is trying to edit someone else's post.
+ $caps[] = 'edit_others_posts';
+ // The post is published, extra cap required.
+ if ( 'publish' == $post->post_status )
+ $caps[] = 'edit_published_posts';
+ elseif ( 'private' == $post->post_status )
+ $caps[] = 'edit_private_posts';
+ }
+ break;
+ case 'edit_page':
+ $author_data = get_userdata( $user_id );
+ //echo "post ID: {$args[0]}<br />";
+ $page = get_page( $args[0] );
+ $page_author_data = get_userdata( $page->post_author );
+ //echo "current user id : $user_id, page author id: " . $page_author_data->ID . "<br />";
+ // If the user is the author...
+ if ( $user_id == $page_author_data->ID ) {
+ // If the page is published...
+ if ( 'publish' == $page->post_status ) {
+ $caps[] = 'edit_published_pages';
+ } elseif ( 'trash' == $page->post_status ) {
+ if ('publish' == get_post_meta($page->ID, '_wp_trash_meta_status', true) )
+ $caps[] = 'edit_published_pages';
+ } else {
+ // If the page is draft...
+ $caps[] = 'edit_pages';
+ }
+ } else {
+ // The user is trying to edit someone else's page.
+ $caps[] = 'edit_others_pages';
+ // The page is published, extra cap required.
+ if ( 'publish' == $page->post_status )
+ $caps[] = 'edit_published_pages';
+ elseif ( 'private' == $page->post_status )
+ $caps[] = 'edit_private_pages';
+ }
+ break;
+ case 'read_post':
+ $post = get_post( $args[0] );
+ if ( 'page' == $post->post_type ) {
+ $args = array_merge( array( 'read_page', $user_id ), $args );
+ return call_user_func_array( 'map_meta_cap', $args );
+ }
+
+ if ( 'private' != $post->post_status ) {
+ $caps[] = 'read';
+ break;
+ }
+
+ $author_data = get_userdata( $user_id );
+ $post_author_data = get_userdata( $post->post_author );
+ if ( $user_id == $post_author_data->ID )
+ $caps[] = 'read';
+ else
+ $caps[] = 'read_private_posts';
+ break;
+ case 'read_page':
+ $page = get_page( $args[0] );
+
+ if ( 'private' != $page->post_status ) {
+ $caps[] = 'read';
+ break;
+ }
+
+ $author_data = get_userdata( $user_id );
+ $page_author_data = get_userdata( $page->post_author );
+ if ( $user_id == $page_author_data->ID )
+ $caps[] = 'read';
+ else
+ $caps[] = 'read_private_pages';
+ break;
+ case 'unfiltered_upload':
+ if ( defined('ALLOW_UNFILTERED_UPLOADS') && ALLOW_UNFILTERED_UPLOADS == true )
+ $caps[] = $cap;
+ else
+ $caps[] = 'do_not_allow';
+ break;
+ default:
+ // 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 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 ) )
+ 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 );
+}
+
+/**
+ * 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.
+ * @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 );
+}
+
+?>