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<?php
/**
* REST API: WP_REST_Themes_Controller class
*
* @package WordPress
* @subpackage REST_API
* @since 5.0.0
*/
/**
* Core class used to manage themes via the REST API.
*
* @since 5.0.0
*
* @see WP_REST_Controller
*/
class WP_REST_Themes_Controller extends WP_REST_Controller {
/**
* Matches theme's directory: `/themes/<subdirectory>/<theme>/` or `/themes/<theme>/`.
* Excludes invalid directory name characters: `/:<>*?"|`.
*/
const PATTERN = '[^\/:<>\*\?"\|]+(?:\/[^\/:<>\*\?"\|]+)?';
/**
* Constructor.
*
* @since 5.0.0
*/
public function __construct() {
$this->namespace = 'wp/v2';
$this->rest_base = 'themes';
}
/**
* Registers the routes for themes.
*
* @since 5.0.0
*
* @see register_rest_route()
*/
public function register_routes() {
register_rest_route(
$this->namespace,
'/' . $this->rest_base,
array(
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_items' ),
'permission_callback' => array( $this, 'get_items_permissions_check' ),
'args' => $this->get_collection_params(),
),
'schema' => array( $this, 'get_item_schema' ),
)
);
register_rest_route(
$this->namespace,
sprintf( '/%s/(?P<stylesheet>%s)', $this->rest_base, self::PATTERN ),
array(
'args' => array(
'stylesheet' => array(
'description' => __( "The theme's stylesheet. This uniquely identifies the theme." ),
'type' => 'string',
'sanitize_callback' => array( $this, '_sanitize_stylesheet_callback' ),
),
),
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_item' ),
'permission_callback' => array( $this, 'get_item_permissions_check' ),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
}
/**
* Sanitize the stylesheet to decode endpoint.
*
* @since 5.9.0
*
* @param string $stylesheet The stylesheet name.
* @return string Sanitized stylesheet.
*/
public function _sanitize_stylesheet_callback( $stylesheet ) {
return urldecode( $stylesheet );
}
/**
* Checks if a given request has access to read the theme.
*
* @since 5.0.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access for the item, otherwise WP_Error object.
*/
public function get_items_permissions_check( $request ) {
if ( current_user_can( 'switch_themes' ) || current_user_can( 'manage_network_themes' ) ) {
return true;
}
$registered = $this->get_collection_params();
if ( isset( $registered['status'], $request['status'] ) && is_array( $request['status'] ) && array( 'active' ) === $request['status'] ) {
return $this->check_read_active_theme_permission();
}
return new WP_Error(
'rest_cannot_view_themes',
__( 'Sorry, you are not allowed to view themes.' ),
array( 'status' => rest_authorization_required_code() )
);
}
/**
* Checks if a given request has access to read the theme.
*
* @since 5.7.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access for the item, otherwise WP_Error object.
*/
public function get_item_permissions_check( $request ) {
if ( current_user_can( 'switch_themes' ) || current_user_can( 'manage_network_themes' ) ) {
return true;
}
$wp_theme = wp_get_theme( $request['stylesheet'] );
$current_theme = wp_get_theme();
if ( $this->is_same_theme( $wp_theme, $current_theme ) ) {
return $this->check_read_active_theme_permission();
}
return new WP_Error(
'rest_cannot_view_themes',
__( 'Sorry, you are not allowed to view themes.' ),
array( 'status' => rest_authorization_required_code() )
);
}
/**
* Checks if a theme can be read.
*
* @since 5.7.0
*
* @return true|WP_Error True if the theme can be read, WP_Error object otherwise.
*/
protected function check_read_active_theme_permission() {
if ( current_user_can( 'edit_posts' ) ) {
return true;
}
foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) {
if ( current_user_can( $post_type->cap->edit_posts ) ) {
return true;
}
}
return new WP_Error(
'rest_cannot_view_active_theme',
__( 'Sorry, you are not allowed to view the active theme.' ),
array( 'status' => rest_authorization_required_code() )
);
}
/**
* Retrieves a single theme.
*
* @since 5.7.0
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
*/
public function get_item( $request ) {
$wp_theme = wp_get_theme( $request['stylesheet'] );
if ( ! $wp_theme->exists() ) {
return new WP_Error(
'rest_theme_not_found',
__( 'Theme not found.' ),
array( 'status' => 404 )
);
}
$data = $this->prepare_item_for_response( $wp_theme, $request );
return rest_ensure_response( $data );
}
/**
* Retrieves a collection of themes.
*
* @since 5.0.0
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
*/
public function get_items( $request ) {
$themes = array();
$current_theme = wp_get_theme();
$status = $request['status'];
if ( array( 'active' ) === $status ) {
$prepared = $this->prepare_item_for_response( $current_theme, $request );
$themes[] = $this->prepare_response_for_collection( $prepared );
} else {
foreach ( wp_get_themes() as $theme ) {
$theme_status = ( $this->is_same_theme( $theme, $current_theme ) ) ? 'active' : 'inactive';
if ( is_array( $status ) && ! in_array( $theme_status, $status, true ) ) {
continue;
}
$prepared = $this->prepare_item_for_response( $theme, $request );
$themes[] = $this->prepare_response_for_collection( $prepared );
}
}
$response = rest_ensure_response( $themes );
$response->header( 'X-WP-Total', count( $themes ) );
$response->header( 'X-WP-TotalPages', 1 );
return $response;
}
/**
* Prepares a single theme output for response.
*
* @since 5.0.0
* @since 5.9.0 Renamed `$theme` to `$item` to match parent class for PHP 8 named parameter support.
* @since 6.6.0 Added `stylesheet_uri` and `template_uri` fields.
*
* @param WP_Theme $item Theme object.
* @param WP_REST_Request $request Request object.
* @return WP_REST_Response Response object.
*/
public function prepare_item_for_response( $item, $request ) {
// Restores the more descriptive, specific name for use within this method.
$theme = $item;
$fields = $this->get_fields_for_response( $request );
$data = array();
if ( rest_is_field_included( 'stylesheet', $fields ) ) {
$data['stylesheet'] = $theme->get_stylesheet();
}
if ( rest_is_field_included( 'template', $fields ) ) {
/**
* Use the get_template() method, not the 'Template' header, for finding the template.
* The 'Template' header is only good for what was written in the style.css, while
* get_template() takes into account where WordPress actually located the theme and
* whether it is actually valid.
*/
$data['template'] = $theme->get_template();
}
$plain_field_mappings = array(
'requires_php' => 'RequiresPHP',
'requires_wp' => 'RequiresWP',
'textdomain' => 'TextDomain',
'version' => 'Version',
);
foreach ( $plain_field_mappings as $field => $header ) {
if ( rest_is_field_included( $field, $fields ) ) {
$data[ $field ] = $theme->get( $header );
}
}
if ( rest_is_field_included( 'screenshot', $fields ) ) {
// Using $theme->get_screenshot() with no args to get absolute URL.
$data['screenshot'] = $theme->get_screenshot() ? $theme->get_screenshot() : '';
}
$rich_field_mappings = array(
'author' => 'Author',
'author_uri' => 'AuthorURI',
'description' => 'Description',
'name' => 'Name',
'tags' => 'Tags',
'theme_uri' => 'ThemeURI',
);
foreach ( $rich_field_mappings as $field => $header ) {
if ( rest_is_field_included( "{$field}.raw", $fields ) ) {
$data[ $field ]['raw'] = $theme->display( $header, false, true );
}
if ( rest_is_field_included( "{$field}.rendered", $fields ) ) {
$data[ $field ]['rendered'] = $theme->display( $header );
}
}
$current_theme = wp_get_theme();
if ( rest_is_field_included( 'status', $fields ) ) {
$data['status'] = ( $this->is_same_theme( $theme, $current_theme ) ) ? 'active' : 'inactive';
}
if ( rest_is_field_included( 'theme_supports', $fields ) && $this->is_same_theme( $theme, $current_theme ) ) {
foreach ( get_registered_theme_features() as $feature => $config ) {
if ( ! is_array( $config['show_in_rest'] ) ) {
continue;
}
$name = $config['show_in_rest']['name'];
if ( ! rest_is_field_included( "theme_supports.{$name}", $fields ) ) {
continue;
}
if ( ! current_theme_supports( $feature ) ) {
$data['theme_supports'][ $name ] = $config['show_in_rest']['schema']['default'];
continue;
}
$support = get_theme_support( $feature );
if ( isset( $config['show_in_rest']['prepare_callback'] ) ) {
$prepare = $config['show_in_rest']['prepare_callback'];
} else {
$prepare = array( $this, 'prepare_theme_support' );
}
$prepared = $prepare( $support, $config, $feature, $request );
if ( is_wp_error( $prepared ) ) {
continue;
}
$data['theme_supports'][ $name ] = $prepared;
}
}
if ( rest_is_field_included( 'is_block_theme', $fields ) ) {
$data['is_block_theme'] = $theme->is_block_theme();
}
if ( rest_is_field_included( 'stylesheet_uri', $fields ) ) {
if ( $this->is_same_theme( $theme, $current_theme ) ) {
$data['stylesheet_uri'] = get_stylesheet_directory_uri();
} else {
$data['stylesheet_uri'] = $theme->get_stylesheet_directory_uri();
}
}
if ( rest_is_field_included( 'template_uri', $fields ) ) {
if ( $this->is_same_theme( $theme, $current_theme ) ) {
$data['template_uri'] = get_template_directory_uri();
} else {
$data['template_uri'] = $theme->get_template_directory_uri();
}
}
if ( rest_is_field_included( 'default_template_types', $fields ) && $this->is_same_theme( $theme, $current_theme ) ) {
$default_template_types = array();
foreach ( get_default_block_template_types() as $slug => $template_type ) {
$template_type['slug'] = (string) $slug;
$default_template_types[] = $template_type;
}
$data['default_template_types'] = $default_template_types;
}
if ( rest_is_field_included( 'default_template_part_areas', $fields ) && $this->is_same_theme( $theme, $current_theme ) ) {
$data['default_template_part_areas'] = get_allowed_block_template_part_areas();
}
$data = $this->add_additional_fields_to_object( $data, $request );
// Wrap the data in a response object.
$response = rest_ensure_response( $data );
if ( rest_is_field_included( '_links', $fields ) || rest_is_field_included( '_embedded', $fields ) ) {
$response->add_links( $this->prepare_links( $theme ) );
}
/**
* Filters theme data returned from the REST API.
*
* @since 5.0.0
*
* @param WP_REST_Response $response The response object.
* @param WP_Theme $theme Theme object used to create response.
* @param WP_REST_Request $request Request object.
*/
return apply_filters( 'rest_prepare_theme', $response, $theme, $request );
}
/**
* Prepares links for the request.
*
* @since 5.7.0
*
* @param WP_Theme $theme Theme data.
* @return array Links for the given block type.
*/
protected function prepare_links( $theme ) {
$links = array(
'self' => array(
'href' => rest_url( sprintf( '%s/%s/%s', $this->namespace, $this->rest_base, $theme->get_stylesheet() ) ),
),
'collection' => array(
'href' => rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ),
),
);
if ( $this->is_same_theme( $theme, wp_get_theme() ) ) {
// This creates a record for the active theme if not existent.
$id = WP_Theme_JSON_Resolver::get_user_global_styles_post_id();
} else {
$user_cpt = WP_Theme_JSON_Resolver::get_user_data_from_wp_global_styles( $theme );
$id = $user_cpt['ID'] ?? null;
}
if ( $id ) {
$links['https://api.w.org/user-global-styles'] = array(
'href' => rest_url( 'wp/v2/global-styles/' . $id ),
);
}
if ( $theme->is_block_theme() && $this->is_same_theme( $theme, wp_get_theme() ) ) {
$links['https://api.w.org/export-theme'] = array(
'href' => rest_url( 'wp-block-editor/v1/export' ),
'targetHints' => array(
'allow' => current_user_can( 'export' ) ? array( 'GET' ) : array(),
),
);
}
return $links;
}
/**
* Helper function to compare two themes.
*
* @since 5.7.0
*
* @param WP_Theme $theme_a First theme to compare.
* @param WP_Theme $theme_b Second theme to compare.
* @return bool
*/
protected function is_same_theme( $theme_a, $theme_b ) {
return $theme_a->get_stylesheet() === $theme_b->get_stylesheet();
}
/**
* Prepares the theme support value for inclusion in the REST API response.
*
* @since 5.5.0
*
* @param mixed $support The raw value from get_theme_support().
* @param array $args The feature's registration args.
* @param string $feature The feature name.
* @param WP_REST_Request $request The request object.
* @return mixed The prepared support value.
*/
protected function prepare_theme_support( $support, $args, $feature, $request ) {
$schema = $args['show_in_rest']['schema'];
if ( 'boolean' === $schema['type'] ) {
return true;
}
if ( is_array( $support ) && ! $args['variadic'] ) {
$support = $support[0];
}
return rest_sanitize_value_from_schema( $support, $schema );
}
/**
* Retrieves the theme's schema, conforming to JSON Schema.
*
* @since 5.0.0
*
* @return array Item schema data.
*/
public function get_item_schema() {
if ( $this->schema ) {
return $this->add_additional_fields_schema( $this->schema );
}
$schema = array(
'$schema' => 'http://json-schema.org/draft-04/schema#',
'title' => 'theme',
'type' => 'object',
'properties' => array(
'stylesheet' => array(
'description' => __( 'The theme\'s stylesheet. This uniquely identifies the theme.' ),
'type' => 'string',
'readonly' => true,
),
'stylesheet_uri' => array(
'description' => __( 'The uri for the theme\'s stylesheet directory.' ),
'type' => 'string',
'format' => 'uri',
'readonly' => true,
),
'template' => array(
'description' => __( 'The theme\'s template. If this is a child theme, this refers to the parent theme, otherwise this is the same as the theme\'s stylesheet.' ),
'type' => 'string',
'readonly' => true,
),
'template_uri' => array(
'description' => __( 'The uri for the theme\'s template directory. If this is a child theme, this refers to the parent theme, otherwise this is the same as the theme\'s stylesheet directory.' ),
'type' => 'string',
'format' => 'uri',
'readonly' => true,
),
'author' => array(
'description' => __( 'The theme author.' ),
'type' => 'object',
'readonly' => true,
'properties' => array(
'raw' => array(
'description' => __( 'The theme author\'s name, as found in the theme header.' ),
'type' => 'string',
),
'rendered' => array(
'description' => __( 'HTML for the theme author, transformed for display.' ),
'type' => 'string',
),
),
),
'author_uri' => array(
'description' => __( 'The website of the theme author.' ),
'type' => 'object',
'readonly' => true,
'properties' => array(
'raw' => array(
'description' => __( 'The website of the theme author, as found in the theme header.' ),
'type' => 'string',
'format' => 'uri',
),
'rendered' => array(
'description' => __( 'The website of the theme author, transformed for display.' ),
'type' => 'string',
'format' => 'uri',
),
),
),
'description' => array(
'description' => __( 'A description of the theme.' ),
'type' => 'object',
'readonly' => true,
'properties' => array(
'raw' => array(
'description' => __( 'The theme description, as found in the theme header.' ),
'type' => 'string',
),
'rendered' => array(
'description' => __( 'The theme description, transformed for display.' ),
'type' => 'string',
),
),
),
'is_block_theme' => array(
'description' => __( 'Whether the theme is a block-based theme.' ),
'type' => 'boolean',
'readonly' => true,
),
'name' => array(
'description' => __( 'The name of the theme.' ),
'type' => 'object',
'readonly' => true,
'properties' => array(
'raw' => array(
'description' => __( 'The theme name, as found in the theme header.' ),
'type' => 'string',
),
'rendered' => array(
'description' => __( 'The theme name, transformed for display.' ),
'type' => 'string',
),
),
),
'requires_php' => array(
'description' => __( 'The minimum PHP version required for the theme to work.' ),
'type' => 'string',
'readonly' => true,
),
'requires_wp' => array(
'description' => __( 'The minimum WordPress version required for the theme to work.' ),
'type' => 'string',
'readonly' => true,
),
'screenshot' => array(
'description' => __( 'The theme\'s screenshot URL.' ),
'type' => 'string',
'format' => 'uri',
'readonly' => true,
),
'tags' => array(
'description' => __( 'Tags indicating styles and features of the theme.' ),
'type' => 'object',
'readonly' => true,
'properties' => array(
'raw' => array(
'description' => __( 'The theme tags, as found in the theme header.' ),
'type' => 'array',
'items' => array(
'type' => 'string',
),
),
'rendered' => array(
'description' => __( 'The theme tags, transformed for display.' ),
'type' => 'string',
),
),
),
'textdomain' => array(
'description' => __( 'The theme\'s text domain.' ),
'type' => 'string',
'readonly' => true,
),
'theme_supports' => array(
'description' => __( 'Features supported by this theme.' ),
'type' => 'object',
'readonly' => true,
'properties' => array(),
),
'theme_uri' => array(
'description' => __( 'The URI of the theme\'s webpage.' ),
'type' => 'object',
'readonly' => true,
'properties' => array(
'raw' => array(
'description' => __( 'The URI of the theme\'s webpage, as found in the theme header.' ),
'type' => 'string',
'format' => 'uri',
),
'rendered' => array(
'description' => __( 'The URI of the theme\'s webpage, transformed for display.' ),
'type' => 'string',
'format' => 'uri',
),
),
),
'version' => array(
'description' => __( 'The theme\'s current version.' ),
'type' => 'string',
'readonly' => true,
),
'status' => array(
'description' => __( 'A named status for the theme.' ),
'type' => 'string',
'enum' => array( 'inactive', 'active' ),
),
'default_template_types' => array(
'description' => __( 'A list of default template types.' ),
'type' => 'array',
'readonly' => true,
'items' => array(
'type' => 'object',
'properties' => array(
'slug' => array(
'type' => 'string',
),
'title' => array(
'type' => 'string',
),
'description' => array(
'type' => 'string',
),
),
),
),
'default_template_part_areas' => array(
'description' => __( 'A list of allowed area values for template parts.' ),
'type' => 'array',
'readonly' => true,
'items' => array(
'type' => 'object',
'properties' => array(
'area' => array(
'type' => 'string',
),
'label' => array(
'type' => 'string',
),
'description' => array(
'type' => 'string',
),
'icon' => array(
'type' => 'string',
),
'area_tag' => array(
'type' => 'string',
),
),
),
),
),
);
foreach ( get_registered_theme_features() as $feature => $config ) {
if ( ! is_array( $config['show_in_rest'] ) ) {
continue;
}
$name = $config['show_in_rest']['name'];
$schema['properties']['theme_supports']['properties'][ $name ] = $config['show_in_rest']['schema'];
}
$this->schema = $schema;
return $this->add_additional_fields_schema( $this->schema );
}
/**
* Retrieves the search params for the themes collection.
*
* @since 5.0.0
*
* @return array Collection parameters.
*/
public function get_collection_params() {
$query_params = array(
'status' => array(
'description' => __( 'Limit result set to themes assigned one or more statuses.' ),
'type' => 'array',
'items' => array(
'enum' => array( 'active', 'inactive' ),
'type' => 'string',
),
),
);
/**
* Filters REST API collection parameters for the themes controller.
*
* @since 5.0.0
*
* @param array $query_params JSON Schema-formatted collection parameters.
*/
return apply_filters( 'rest_themes_collection_params', $query_params );
}
/**
* Sanitizes and validates the list of theme status.
*
* @since 5.0.0
* @deprecated 5.7.0
*
* @param string|array $statuses One or more theme statuses.
* @param WP_REST_Request $request Full details about the request.
* @param string $parameter Additional parameter to pass to validation.
* @return array|WP_Error A list of valid statuses, otherwise WP_Error object.
*/
public function sanitize_theme_status( $statuses, $request, $parameter ) {
_deprecated_function( __METHOD__, '5.7.0' );
$statuses = wp_parse_slug_list( $statuses );
foreach ( $statuses as $status ) {
$result = rest_validate_request_arg( $status, $request, $parameter );
if ( is_wp_error( $result ) ) {
return $result;
}
}
return $statuses;
}
}