ite ID. * @param string $capability Capability name. * @param mixed ...$args Optional further parameters, typically starting with an object ID. * @return bool Whether the user has the given capability. */ function current_user_can_for_blog( $blog_id, $capability, ...$args ) { $switched = is_multisite() ? switch_to_blog( $blog_id ) : false; $can = current_user_can( $capability, ...$args ); if ( $switched ) { restore_current_blog(); } return $can; } /** * Returns whether the author of the supplied post has the specified capability. * * This function also accepts an ID of an object to check against if the capability is a meta capability. Meta * capabilities such as `edit_post` and `edit_user` are capabilities used by the `map_meta_cap()` function to * map to primitive capabilities that a user or role has, such as `edit_posts` and `edit_others_posts`. * * Example usage: * * author_can( $post, 'edit_posts' ); * author_can( $post, 'edit_post', $post->ID ); * author_can( $post, 'edit_post_meta', $post->ID, $meta_key ); * * @since 2.9.0 * @since 5.3.0 Formalized the existing and already documented `...$args` parameter * by adding it to the function signature. * * @param int|WP_Post $post Post ID or post object. * @param string $capability Capability name. * @param mixed ...$args Optional further parameters, typically starting with an object ID. * @return bool Whether the post author has the given capability. */ function author_can( $post, $capability, ...$args ) { $post = get_post( $post ); if ( ! $post ) { return false; } $author = get_userdata( $post->post_author ); if ( ! $author ) { return false; } return $author->has_cap( $capability, ...$args ); } /** * Returns whether a particular user has the specified capability. * * This function also accepts an ID of an object to check against if the capability is a meta capability. Meta * capabilities such as `edit_post` and `edit_user` are capabilities used by the `map_meta_cap()` function to * map to primitive capabilities that a user or role has, such as `edit_posts` and `edit_others_posts`. * * Example usage: * * user_can( $user->ID, 'edit_posts' ); * user_can( $user->ID, 'edit_post', $post->ID ); * user_can( $user->ID, 'edit_post_meta', $post->ID, $meta_key ); * * @since 3.1.0 * @since 5.3.0 Formalized the existing and already documented `...$args` parameter * by adding it to the function signature. * * @param int|WP_User $user User ID or object. * @param string $capability Capability name. * @param mixed ...$args Optional further parameters, typically starting with an object ID. * @return bool Whether the user has the given capability. */ function user_can( $user, $capability, ...$args ) { if ( ! is_object( $user ) ) { $user = get_userdata( $user ); } if ( empty( $user ) ) { // User is logged out, create anonymous user object. $user = new WP_User( 0 ); $user->init( new stdClass ); } return $user->has_cap( $capability, ...$args ); } /** * Retrieves the global WP_Roles instance and instantiates it if necessary. * * @since 4.3.0 * * @global WP_Roles $wp_roles WordPress role management object. * * @return WP_Roles WP_Roles global instance if not already instantiated. */ function wp_roles() { global $wp_roles; if ( ! isset( $wp_roles ) ) { $wp_roles = new WP_Roles(); } return $wp_roles; } /** * Retrieve role object. * * @since 2.0.0 * * @param string $role Role name. * @return WP_Role|null WP_Role object if found, null if the role does not exist. */ function get_role( $role ) { return wp_roles()->get_role( $role ); } /** * Add role, if it does not exist. * * @since 2.0.0 * * @param string $role Role name. * @param string $display_name Display name for role. * @param bool[] $capabilities List of capabilities keyed by the capability name, * e.g. array( 'edit_posts' => true, 'delete_posts' => false ). * @return WP_Role|null WP_Role object if role is added, null if already exists. */ function add_role( $role, $display_name, $capabilities = array() ) { if ( empty( $role ) ) { return; } return wp_roles()->add_role( $role, $display_name, $capabilities ); } /** * Remove role, if it exists. * * @since 2.0.0 * * @param string $role Role name. */ function remove_role( $role ) { wp_roles()->remove_role( $role ); } /** * Retrieve a list of super admins. * * @since 3.0.0 * * @global array $super_admins * * @return string[] 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|false $user_id Optional. The ID of a user. Defaults to false, to check the current user. * @return bool Whether the user is a site admin. */ function is_super_admin( $user_id = false ) { if ( ! $user_id || get_current_user_id() == $user_id ) { $user = wp_get_current_user(); } else { $user = get_userdata( $user_id ); } if ( ! $user || ! $user->exists() ) { return false; } if ( is_multisite() ) { $super_admins = get_super_admins(); if ( is_array( $super_admins ) && in_array( $user->user_login, $super_admins, true ) ) { return true; } } else { if ( $user->has_cap( 'delete_users' ) ) { return true; } } return false; } /** * Grants Super Admin privileges. * * @since 3.0.0 * * @global array $super_admins * * @param int $user_id ID of the user to be granted Super Admin privileges. * @return bool True on success, false on failure. This can fail when the user is * already a super admin or when the `$super_admins` global is defined. */ function grant_super_admin( $user_id ) { // If global super_admins override is defined, there is nothing to do here. if ( isset( $GLOBALS['super_admins'] ) || ! is_multisite() ) { return false; } /** * Fires before the user is granted Super Admin privileges. * * @since 3.0.0 * * @param int $user_id ID of the user that is about to be granted Super Admin privileges. */ do_action( 'grant_super_admin', $user_id ); // Directly fetch site_admins instead of using get_super_admins(). $super_admins = get_site_option( 'site_admins', array( 'admin' ) ); $user = get_userdata( $user_id ); if ( $user && ! in_array( $user->user_login, $super_admins, true ) ) { $super_admins[] = $user->user_login; update_site_option( 'site_admins', $super_admins ); /** * Fires after the user is granted Super Admin privileges. * * @since 3.0.0 * * @param int $user_id ID of the user that was granted Super Admin privileges. */ do_action( 'granted_super_admin', $user_id ); return true; } return false; } /** * Revokes Super Admin privileges. * * @since 3.0.0 * * @global array $super_admins * * @param int $user_id ID of the user Super Admin privileges to be revoked from. * @return bool True on success, false on failure. This can fail when the user's email * is the network admin email or when the `$super_admins` global is defined. */ function revoke_super_admin( $user_id ) { // If global super_admins override is defined, there is nothing to do here. if ( isset( $GLOBALS['super_admins'] ) || ! is_multisite() ) { return false; } /** * Fires before the user's Super Admin privileges are revoked. * * @since 3.0.0 * * @param int $user_id ID of the user Super Admin privileges are being revoked from. */ do_action( 'revoke_super_admin', $user_id ); // Directly fetch site_admins instead of using get_super_admins(). $super_admins = get_site_option( 'site_admins', array( 'admin' ) ); $user = get_userdata( $user_id ); if ( $user && 0 !== strcasecmp( $user->user_email, get_site_option( 'admin_email' ) ) ) { $key = array_search( $user->user_login, $super_admins, true ); if ( false !== $key ) { unset( $super_admins[ $key ] ); update_site_option( 'site_admins', $super_admins ); /** * Fires after the user's Super Admin privileges are revoked. * * @since 3.0.0 * * @param int $user_id ID of the user Super Admin privileges were revoked from. */ do_action( 'revoked_super_admin', $user_id ); return true; } } return false; } /** * Filters the user capabilities to grant the 'install_languages' capability as necessary. * * A user must have at least one out of the 'update_core', 'install_plugins', and * 'install_themes' capabilities to qualify for 'install_languages'. * * @since 4.9.0 * * @param bool[] $allcaps An array of all the user's capabilities. * @return bool[] Filtered array of the user's capabilities. */ function wp_maybe_grant_install_languages_cap( $allcaps ) { if ( ! empty( $allcaps['update_core'] ) || ! empty( $allcaps['install_plugins'] ) || ! empty( $allcaps['install_themes'] ) ) { $allcaps['install_languages'] = true; } return $allcaps; } /** * Filters the user capabilities to grant the 'resume_plugins' and 'resume_themes' capabilities as necessary. * * @since 5.2.0 * * @param bool[] $allcaps An array of all the user's capabilities. * @return bool[] Filtered array of the user's capabilities. */ function wp_maybe_grant_resume_extensions_caps( $allcaps ) { // Even in a multisite, regular administrators should be able to resume plugins. if ( ! empty( $allcaps['activate_plugins'] ) ) { $allcaps['resume_plugins'] = true; } // Even in a multisite, regular administrators should be able to resume themes. if ( ! empty( $allcaps['switch_themes'] ) ) { $allcaps['resume_themes'] = true; } return $allcaps; } /** * Filters the user capabilities to grant the 'view_site_health_checks' capabilities as necessary. * * @since 5.2.2 * * @param bool[] $allcaps An array of all the user's capabilities. * @param string[] $caps Required primitive capabilities for the requested capability. * @param array $args { * Arguments that accompany the requested capability check. * * @type string $0 Requested capability. * @type int $1 Concerned user ID. * @type mixed ...$2 Optional second and further parameters, typically object ID. * } * @param WP_User $user The user object. * @return bool[] Filtered array of the user's capabilities. */ function wp_maybe_grant_site_health_caps( $allcaps, $caps, $args, $user ) { if ( ! empty( $allcaps['install_plugins'] ) && ( ! is_multisite() || is_super_admin( $user->ID ) ) ) { $allcaps['view_site_health_checks'] = true; } return $allcaps; } return; // Dummy gettext calls to get strings in the catalog. /* translators: User role for administrators. */ _x( 'Administrator', 'User role' ); /* translators: User role for editors. */ _x( 'Editor', 'User role' ); /* translators: User role for authors. */ _x( 'Author', 'User role' ); /* translators: User role for contributors. */ _x( 'Contributor', 'User role' ); /* translators: User role for subscribers. */ _x( 'Subscriber', 'User role' );