<?php
/**
* REST API: WP_REST_Global_Styles_Controller class
*
* @package WordPress
* @subpackage REST_API
* @since 5.9.0
*/
/**
* Base Global Styles REST API Controller.
*/
class WP_REST_Global_Styles_Controller extends WP_REST_Controller {
/**
* Post type.
*
* @since 5.9.0
* @var string
*/
protected $post_type;
/**
* Constructor.
* @since 5.9.0
*/
public function __construct() {
$this->namespace = 'wp/v2';
$this->rest_base = 'global-styles';
$this->post_type = 'wp_global_styles';
}
/**
* Registers the controllers routes.
*
* @since 5.9.0
*
* @return void
*/
public function register_routes() {
register_rest_route(
$this->namespace,
'/' . $this->rest_base . '/themes/(?P<stylesheet>[\/\s%\w\.\(\)\[\]\@_\-]+)/variations',
array(
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_theme_items' ),
'permission_callback' => array( $this, 'get_theme_items_permissions_check' ),
'args' => array(
'stylesheet' => array(
'description' => __( 'The theme identifier' ),
'type' => 'string',
),
),
),
)
);
// List themes global styles.
register_rest_route(
$this->namespace,
// The route.
sprintf(
'/%s/themes/(?P<stylesheet>%s)',
$this->rest_base,
// Matches theme's directory: `/themes/<subdirectory>/<theme>/` or `/themes/<theme>/`.
// Excludes invalid directory name characters: `/:<>*?"|`.
'[^\/:<>\*\?"\|]+(?:\/[^\/:<>\*\?"\|]+)?'
),
array(
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_theme_item' ),
'permission_callback' => array( $this, 'get_theme_item_permissions_check' ),
'args' => array(
'stylesheet' => array(
'description' => __( 'The theme identifier' ),
'type' => 'string',
'sanitize_callback' => array( $this, '_sanitize_global_styles_callback' ),
),
),
),
)
);
// Lists/updates a single global style variation based on the given id.
register_rest_route(
$this->namespace,
'/' . $this->rest_base . '/(?P<id>[\/\w-]+)',
array(
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_item' ),
'permission_callback' => array( $this, 'get_item_permissions_check' ),
'args' => array(
'id' => array(
'description' => __( 'The id of a template' ),
'type' => 'string',
'sanitize_callback' => array( $this, '_sanitize_global_styles_callback' ),
),
),
),
array(
'methods' => WP_REST_Server::EDITABLE,
'callback' => array( $this, 'update_item' ),
'permission_callback' => array( $this, 'update_item_permissions_check' ),
'args' => $this->get_endpoint_args_for_item_schema( WP_REST_Server::EDITABLE ),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
}
/**
* Sanitize the global styles ID or stylesheet to decode endpoint.
* For example, `wp/v2/global-styles/twentytwentytwo%200.4.0`
* would be decoded to `twentytwentytwo 0.4.0`.
*
* @since 5.9.0
*
* @param string $id_or_stylesheet Global styles ID or stylesheet.
* @return string Sanitized global styles ID or stylesheet.
*/
public function _sanitize_global_styles_callback( $id_or_stylesheet ) {
return urldecode( $id_or_stylesheet );
}
/**
* Get the post, if the ID is valid.
*
* @since 5.9.0
*
* @param int $id Supplied ID.
* @return WP_Post|WP_Error Post object if ID is valid, WP_Error otherwise.
*/
protected function get_post( $id ) {
$error = new WP_Error(
'rest_global_styles_not_found',
__( 'No global styles config exist with that id.' ),
array( 'status' => 404 )
);
$id = (int) $id;
if ( $id <= 0 ) {
return $error;
}
$post = get_post( $id );
if ( empty( $post ) || empty( $post->ID ) || $this->post_type !== $post->post_type ) {
return $error;
}
return $post;
}
/**
* Checks if a given request has access to read a single global style.
*
* @since 5.9.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access, WP_Error object otherwise.
*/
public function get_item_permissions_check( $request ) {
$post = $this->get_post( $request['id'] );
if ( is_wp_error( $post ) ) {
return $post;
}
if ( 'edit' === $request['context'] && $post && ! $this->check_update_permission( $post ) ) {
return new WP_Error(
'rest_forbidden_context',
__( 'Sorry, you are not allowed to edit this global style.' ),
array( 'status' => rest_authorization_required_code() )
);
}
if ( ! $this->check_read_permission( $post ) ) {
return new WP_Error(
'rest_cannot_view',
__( 'Sorry, you are not allowed to view this global style.' ),
array( 'status' => rest_authorization_required_code() )
);
}
return true;
}
/**
* Checks if a global style can be read.
*
* @since 5.9.0
*
* @param WP_Post $post Post object.
* @return bool Whether the post can be read.
*/
protected function check_read_permission( $post ) {
return current_user_can( 'read_post', $post->ID );
}
/**
* Returns the given global styles config.
*
* @since 5.9.0
*
* @param WP_REST_Request $request The request instance.
*
* @return WP_REST_Response|WP_Error
*/
public function get_item( $request ) {
$post = $this->get_post( $request['id'] );
if ( is_wp_error( $post ) ) {
return $post;
}
return $this->prepare_item_for_response( $post, $request );
}
/**
* Checks if a given request has access to write a single global styles config.
*
* @since 5.9.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has write access for the item, WP_Error object otherwise.
*/
public function update_item_permissions_check( $request ) {
$post = $this->get_post( $request['id'] );
if ( is_wp_error( $post ) ) {
return $post;
}
if ( $post && ! $this->check_update_permission( $post ) ) {
return new WP_Error(
'rest_cannot_edit',
__( 'Sorry, you are not allowed to edit this global style.' ),
array( 'status' => rest_authorization_required_code() )
);
}
return true;
}
/**
* Checks if a global style can be edited.
*
* @since 5.9.0
*
* @param WP_Post $post Post object.
* @return bool Whether the post can be edited.
*/
protected function check_update_permission( $post ) {
return current_user_can( 'edit_post', $post->ID );
}
/**
* Updates a single global style config.
*
* @since 5.9.0
*
* @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 update_item( $request ) {
$post_before = $this->get_post( $request['id'] );
if ( is_wp_error( $post_before ) ) {
return $post_before;
}
$changes = $this->prepare_item_for_database( $request );
if ( is_wp_error( $changes ) ) {
return $changes;
}
$result = wp_update_post( wp_slash( (array) $changes ), true, false );
if ( is_wp_error( $result ) ) {
return $result;
}
$post = get_post( $request['id'] );
$fields_update = $this->update_additional_fields_for_object( $post, $request );
if ( is_wp_error( $fields_update ) ) {
return $fields_update;
}
wp_after_insert_post( $post, true, $post_before );
$response = $this->prepare_item_for_response( $post, $request );
return rest_ensure_response( $response );
}
/**
* Prepares a single global styles config for update.
*
* @since 5.9.0
* @since 6.2.0 Added validation of styles.css property.
*
* @param WP_REST_Request $request Request object.
* @return stdClass|WP_Error Prepared item on success. WP_Error on when the custom CSS is not valid.
*/
protected function prepare_item_for_database( $request ) {
$changes = new stdClass();
$changes->ID = $request['id'];
$post = get_post( $request['id'] );
$existing_config = array();
if ( $post ) {
$existing_config = json_decode( $post->post_content, true );
$json_decoding_error = json_last_error();
if ( JSON_ERROR_NONE !== $json_decoding_error || ! isset( $existing_config['isGlobalStylesUserThemeJSON'] ) ||
! $existing_config['isGlobalStylesUserThemeJSON'] ) {
$existing_config = array();
}
}
if ( isset( $request['styles'] ) || isset( $request['settings'] ) ) {
$config = array();
if ( isset( $request['styles'] ) ) {
if ( isset( $request['styles']['css'] ) ) {
$css_validation_result = $this->validate_custom_css( $request['styles']['css'] );
if ( is_wp_error( $css_validation_result ) ) {
return $css_validation_result;
}
}
$config['styles'] = $request['styles'];
} elseif ( isset( $existing_config['styles'] ) ) {
$config['styles'] = $existing_config['styles'];
}
if ( isset( $request['settings'] ) ) {
$config['settings'] = $request['settings'];
} elseif ( isset( $existing_config['settings'] ) ) {
$config['settings'] = $existing_config['settings'];
}
$config['isGlobalStylesUserThemeJSON'] = true;
$config['version'] = WP_Theme_JSON::LATEST_SCHEMA;
$changes->post_content = wp_json_encode( $config );
}
// Post title.
if ( isset( $request['title'] ) ) {
if ( is_string( $request['title'] ) ) {
$changes->post_title = $request['title'];
} elseif ( ! empty( $request['title']['raw'] ) ) {
$changes->post_title = $request['title']['raw'];
}
}
return $changes;
}
/**
* Prepare a global styles config output for response.
*
* @since 5.9.0
*
* @param WP_Post $post Global Styles post object.
* @param WP_REST_Request $request Request object.
* @return WP_REST_Response Response object.
*/
public function prepare_item_for_response( $post, $request ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
$raw_config = json_decode( $post->post_content, true );
$is_global_styles_user_theme_json = isset( $raw_config['isGlobalStylesUserThemeJSON'] ) && true === $raw_config['isGlobalStylesUserThemeJSON'];
$config = array();
if ( $is_global_styles_user_theme_json ) {
$config = ( new WP_Theme_JSON( $raw_config, 'custom' ) )->get_raw_data();
}
// Base fields for every post.
$data = array();
$fields = $this->get_fields_for_response( $request );
if ( rest_is_field_included( 'id', $fields ) ) {
$data['id'] = $post->ID;
}
if ( rest_is_field_included( 'title', $fields ) ) {
$data['title'] = array();
}
if ( rest_is_field_included( 'title.raw', $fields ) ) {
$data['title']['raw'] = $post->post_title;
}
if ( rest_is_field_included( 'title.rendered', $fields ) ) {
add_filter( 'protected_title_format', array( $this, 'protected_title_format' ) );
$data['title']['rendered'] = get_the_title( $post->ID );
remove_filter( 'protected_title_format', array( $this, 'protected_title_format' ) );
}
if ( rest_is_field_included( 'settings', $fields ) ) {
$data['settings'] = ! empty( $config['settings'] ) && $is_global_styles_user_theme_json ? $config['settings'] : new stdClass();
}
if ( rest_is_field_included( 'styles', $fields ) ) {
$data['styles'] = ! empty( $config['styles'] ) && $is_global_styles_user_theme_json ? $config['styles'] : new stdClass();
}
$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
$data = $this->add_additional_fields_to_object( $data, $request );
$data = $this->filter_response_by_context( $data, $context );
// 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 ) ) {
$links = $this->prepare_links( $post->ID );
$response->add_links( $links );
if ( ! empty( $links['self']['href'] ) ) {
$actions = $this->get_available_actions();
$self = $links['self']['href'];
foreach ( $actions as $rel ) {
$response->add_link( $rel, $self );
}
}
}
return $response;
}
/**
* Prepares links for the request.
*
* @since 5.9.0
*
* @param integer $id ID.
* @return array Links for the given post.
*/
protected function prepare_links( $id ) {
$base = sprintf( '%s/%s', $this->namespace, $this->rest_base );
$links = array(
'self' => array(
'href' => rest_url( trailingslashit( $base ) . $id ),
),
);
return $links;
}
/**
* Get the link relations available for the post and current user.
*
* @since 5.9.0
* @since 6.2.0 Added 'edit-css' action.
*
* @return array List of link relations.
*/
protected function get_available_actions() {
$rels = array();
$post_type = get_post_type_object( $this->post_type );
if ( current_user_can( $post_type->cap->publish_posts ) ) {
$rels[] = 'https://api.w.org/action-publish';
}
if ( current_user_can( 'edit_css' ) ) {
$rels[] = 'https://api.w.org/action-edit-css';
}
return $rels;
}
/**
* Overwrites the default protected title format.
*
* By default, WordPress will show password protected posts with a title of
* "Protected: %s", as the REST API communicates the protected status of a post
* in a machine readable format, we remove the "Protected: " prefix.
*
* @since 5.9.0
*
* @return string Protected title format.
*/
public function protected_title_format() {
return '%s';
}
/**
* Retrieves the query params for the global styles collection.
*
* @since 5.9.0
*
* @return array Collection parameters.
*/
public function get_collection_params() {
return array();
}
/**
* Retrieves the global styles type' schema, conforming to JSON Schema.
*
* @since 5.9.0
*
* @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' => $this->post_type,
'type' => 'object',
'properties' => array(
'id' => array(
'description' => __( 'ID of global styles config.' ),
'type' => 'string',
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
'styles' => array(
'description' => __( 'Global styles.' ),
'type' => array( 'object' ),
'context' => array( 'view', 'edit' ),
),
'settings' => array(
'description' => __( 'Global settings.' ),
'type' => array( 'object' ),
'context' => array( 'view', 'edit' ),
),
'title' => array(
'description' => __( 'Title of the global styles variation.' ),
'type' => array( 'object', 'string' ),
'default' => '',
'context' => array( 'embed', 'view', 'edit' ),
'properties' => array(
'raw' => array(
'description' => __( 'Title for the global styles variation, as it exists in the database.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
),
'rendered' => array(
'description' => __( 'HTML title for the post, transformed for display.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
),
),
),
),
);
$this->schema = $schema;
return $this->add_additional_fields_schema( $this->schema );
}
/**
* Checks if a given request has access to read a single theme global styles config.
*
* @since 5.9.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access for the item, WP_Error object otherwise.
*/
public function get_theme_item_permissions_check( $request ) {
// Verify if the current user has edit_theme_options capability.
// This capability is required to edit/view/delete templates.
if ( ! current_user_can( 'edit_theme_options' ) ) {
return new WP_Error(
'rest_cannot_manage_global_styles',
__( 'Sorry, you are not allowed to access the global styles on this site.' ),
array(
'status' => rest_authorization_required_code(),
)
);
}
return true;
}
/**
* Returns the given theme global styles config.
*
* @since 5.9.0
*
* @param WP_REST_Request $request The request instance.
* @return WP_REST_Response|WP_Error
*/
public function get_theme_item( $request ) {
if ( get_stylesheet() !== $request['stylesheet'] ) {
// This endpoint only supports the active theme for now.
return new WP_Error(
'rest_theme_not_found',
__( 'Theme not found.' ),
array( 'status' => 404 )
);
}
$theme = WP_Theme_JSON_Resolver::get_merged_data( 'theme' );
$data = array();
$fields = $this->get_fields_for_response( $request );
if ( rest_is_field_included( 'settings', $fields ) ) {
$data['settings'] = $theme->get_settings();
}
if ( rest_is_field_included( 'styles', $fields ) ) {
$raw_data = $theme->get_raw_data();
$data['styles'] = isset( $raw_data['styles'] ) ? $raw_data['styles'] : array();
}
$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
$data = $this->add_additional_fields_to_object( $data, $request );
$data = $this->filter_response_by_context( $data, $context );
$response = rest_ensure_response( $data );
if ( rest_is_field_included( '_links', $fields ) || rest_is_field_included( '_embedded', $fields ) ) {
$links = array(
'self' => array(
'href' => rest_url( sprintf( '%s/%s/themes/%s', $this->namespace, $this->rest_base, $request['stylesheet'] ) ),
),
);
$response->add_links( $links );
}
return $response;
}
/**
* Checks if a given request has access to read a single theme global styles config.
*
* @since 6.0.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access for the item, WP_Error object otherwise.
*/
public function get_theme_items_permissions_check( $request ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
// Verify if the current user has edit_theme_options capability.
// This capability is required to edit/view/delete templates.
if ( ! current_user_can( 'edit_theme_options' ) ) {
return new WP_Error(
'rest_cannot_manage_global_styles',
__( 'Sorry, you are not allowed to access the global styles on this site.' ),
array(
'status' => rest_authorization_required_code(),
)
);
}
return true;
}
/**
* Returns the given theme global styles variations.
*
* @since 6.0.0
*
* @param WP_REST_Request $request The request instance.
*
* @return WP_REST_Response|WP_Error
*/
public function get_theme_items( $request ) {
if ( get_stylesheet() !== $request['stylesheet'] ) {
// This endpoint only supports the active theme for now.
return new WP_Error(
'rest_theme_not_found',
__( 'Theme not found.' ),
array( 'status' => 404 )
);
}
$variations = WP_Theme_JSON_Resolver::get_style_variations();
$response = rest_ensure_response( $variations );
return $response;
}
/**
* Validate style.css as valid CSS.
*
* Currently just checks for invalid markup.
*
* @since 6.2.0
*
* @param string $css CSS to validate.
* @return true|WP_Error True if the input was validated, otherwise WP_Error.
*/
private function validate_custom_css( $css ) {
if ( preg_match( '#</?\w+#', $css ) ) {
return new WP_Error(
'rest_custom_css_illegal_markup',
__( 'Markup is not allowed in CSS.' ),
array( 'status' => 400 )
);
}
return true;
}
}
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