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REST API: Support 'object' and 'array' types in register_meta() schemas.

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Extends meta registration to support complex schema values, mirroring the functionality in the settings controller.
Error when trying to modify a meta key containing schema-nonconformant data.

Props @TimothyBlynJacobs, @birgire, @mnelson4, @flixos90.
Fixes #43392.


Built from https://develop.svn.wordpress.org/trunk@45807


git-svn-id: http://core.svn.wordpress.org/trunk@45618 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
K. Adam White 2019-08-15 17:17:55 +00:00
parent ab0b860db9
commit 5b318f1dda
3 changed files with 135 additions and 35 deletions
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31
wp-includes/rest-api.php
View File

@ -1159,6 +1159,11 @@ function rest_validate_value_from_schema( $value, $args, $param = '' ) {
if ( $value instanceof stdClass ) {
$value = (array) $value;
}
if ( $value instanceof JsonSerializable ) {
$value = $value->jsonSerialize();
}
if ( ! is_array( $value ) ) {
/* translators: 1: parameter, 2: type name */
return new WP_Error( 'rest_invalid_param', sprintf( __( '%1$s is not of type %2$s.' ), $param, 'object' ) );
@ -1170,8 +1175,17 @@ function rest_validate_value_from_schema( $value, $args, $param = '' ) {
if ( is_wp_error( $is_valid ) ) {
return $is_valid;
}
} elseif ( isset( $args['additionalProperties'] ) && false === $args['additionalProperties'] ) {
return new WP_Error( 'rest_invalid_param', sprintf( __( '%1$s is not a valid property of Object.' ), $property ) );
} elseif ( isset( $args['additionalProperties'] ) ) {
if ( false === $args['additionalProperties'] ) {
return new WP_Error( 'rest_invalid_param', sprintf( __( '%1$s is not a valid property of Object.' ), $property ) );
}
if ( is_array( $args['additionalProperties'] ) ) {
$is_valid = rest_validate_value_from_schema( $v, $args['additionalProperties'], $param . '[' . $property . ']' );
if ( is_wp_error( $is_valid ) ) {
return $is_valid;
}
}
}
}
}
@ -1298,6 +1312,11 @@ function rest_sanitize_value_from_schema( $value, $args ) {
if ( $value instanceof stdClass ) {
$value = (array) $value;
}
if ( $value instanceof JsonSerializable ) {
$value = $value->jsonSerialize();
}
if ( ! is_array( $value ) ) {
return array();
}
@ -1305,8 +1324,12 @@ function rest_sanitize_value_from_schema( $value, $args ) {
foreach ( $value as $property => $v ) {
if ( isset( $args['properties'][ $property ] ) ) {
$value[ $property ] = rest_sanitize_value_from_schema( $v, $args['properties'][ $property ] );
} elseif ( isset( $args['additionalProperties'] ) && false === $args['additionalProperties'] ) {
unset( $value[ $property ] );
} elseif ( isset( $args['additionalProperties'] ) ) {
if ( false === $args['additionalProperties'] ) {
unset( $value[ $property ] );
} elseif ( is_array( $args['additionalProperties'] ) ) {
$value[ $property ] = rest_sanitize_value_from_schema( $v, $args['additionalProperties'] );
}
}
}

137
wp-includes/rest-api/fields/class-wp-rest-meta-fields.php
View File

@ -143,6 +143,21 @@ abstract class WP_REST_Meta_Fields {
* from the database and then relying on the default value.
*/
if ( is_null( $meta[ $name ] ) ) {
$args = $this->get_registered_fields()[ $meta_key ];
if ( $args['single'] ) {
$current = get_metadata( $this->get_meta_type(), $object_id, $meta_key, true );
if ( is_wp_error( rest_validate_value_from_schema( $current, $args['schema'] ) ) ) {
return new WP_Error(
'rest_invalid_stored_value',
/* translators: %s: custom field key */
sprintf( __( 'The %s property has an invalid stored value, and cannot be updated to null.' ), $name ),
array( 'status' => 500 )
);
}
}
$result = $this->delete_meta_value( $object_id, $meta_key, $name );
if ( is_wp_error( $result ) ) {
return $result;
@ -150,13 +165,24 @@ abstract class WP_REST_Meta_Fields {
continue;
}
$is_valid = rest_validate_value_from_schema( $meta[ $name ], $args['schema'], 'meta.' . $name );
$value = $meta[ $name ];
if ( ! $args['single'] && is_array( $value ) && count( array_filter( $value, 'is_null' ) ) ) {
return new WP_Error(
'rest_invalid_stored_value',
/* translators: %s: custom field key */
sprintf( __( 'The %s property has an invalid stored value, and cannot be updated to null.' ), $name ),
array( 'status' => 500 )
);
}
$is_valid = rest_validate_value_from_schema( $value, $args['schema'], 'meta.' . $name );
if ( is_wp_error( $is_valid ) ) {
$is_valid->add_data( array( 'status' => 400 ) );
return $is_valid;
}
$value = rest_sanitize_value_from_schema( $meta[ $name ], $args['schema'] );
$value = rest_sanitize_value_from_schema( $value, $args['schema'] );
if ( $args['single'] ) {
$result = $this->update_meta_value( $object_id, $meta_key, $name, $value );
@ -260,8 +286,10 @@ abstract class WP_REST_Meta_Fields {
unset( $to_add[ $add_key ] );
}
// `delete_metadata` removes _all_ instances of the value, so only call once.
$to_remove = array_unique( $to_remove );
// `delete_metadata` removes _all_ instances of the value, so only call once. Otherwise,
// `delete_metadata` will return false for subsequent calls of the same value.
// Use serialization to produce a predictable string that can be used by array_unique.
$to_remove = array_map( 'maybe_unserialize', array_unique( array_map( 'maybe_serialize', $to_remove ) ) );
foreach ( $to_remove as $value ) {
if ( ! delete_metadata( $meta_type, $object_id, wp_slash( $meta_key ), wp_slash( $value ) ) ) {
@ -393,15 +421,21 @@ abstract class WP_REST_Meta_Fields {
$type = ! empty( $rest_args['type'] ) ? $rest_args['type'] : null;
$type = ! empty( $rest_args['schema']['type'] ) ? $rest_args['schema']['type'] : $type;
if ( ! in_array( $type, array( 'string', 'boolean', 'integer', 'number' ) ) ) {
if ( null === $rest_args['schema']['default'] ) {
$rest_args['schema']['default'] = $this->get_default_for_type( $type );
}
$rest_args['schema'] = $this->default_additional_properties_to_false( $rest_args['schema'] );
if ( ! in_array( $type, array( 'string', 'boolean', 'integer', 'number', 'array', 'object' ) ) ) {
continue;
}
if ( empty( $rest_args['single'] ) ) {
$rest_args['schema']['items'] = array(
'type' => $rest_args['type'],
$rest_args['schema'] = array(
'type' => 'array',
'items' => $rest_args['schema'],
);
$rest_args['schema']['type'] = 'array';
}
$registered[ $name ] = $rest_args;
@ -452,34 +486,18 @@ abstract class WP_REST_Meta_Fields {
* @return mixed Value prepared for output. If a non-JsonSerializable object, null.
*/
public static function prepare_value( $value, $request, $args ) {
$type = $args['schema']['type'];
// For multi-value fields, check the item type instead.
if ( 'array' === $type && ! empty( $args['schema']['items']['type'] ) ) {
$type = $args['schema']['items']['type'];
if ( $args['single'] ) {
$schema = $args['schema'];
} else {
$schema = $args['schema']['items'];
}
switch ( $type ) {
case 'string':
$value = (string) $value;
break;
case 'integer':
$value = (int) $value;
break;
case 'number':
$value = (float) $value;
break;
case 'boolean':
$value = (bool) $value;
break;
}
// Don't allow objects to be output.
if ( is_object( $value ) && ! ( $value instanceof JsonSerializable ) ) {
if ( is_wp_error( rest_validate_value_from_schema( $value, $schema ) ) ) {
return null;
}
return $value;
return rest_sanitize_value_from_schema( $value, $schema );
}
/**
@ -499,4 +517,63 @@ abstract class WP_REST_Meta_Fields {
return $value;
}
/**
* Recursively add additionalProperties = false to all objects in a schema if no additionalProperties setting
* is specified.
*
* This is needed to restrict properties of objects in meta values to only
* registered items, as the REST API will allow additional properties by
* default.
*
* @since 5.3.0
*
* @param array $schema The schema array.
* @return array
*/
protected function default_additional_properties_to_false( $schema ) {
switch ( $schema['type'] ) {
case 'object':
foreach ( $schema['properties'] as $key => $child_schema ) {
$schema['properties'][ $key ] = $this->default_additional_properties_to_false( $child_schema );
}
if ( ! isset( $schema['additionalProperties'] ) ) {
$schema['additionalProperties'] = false;
}
break;
case 'array':
$schema['items'] = $this->default_additional_properties_to_false( $schema['items'] );
break;
}
return $schema;
}
/**
* Gets the default value for a schema type.
*
* @since 5.3.0
*
* @param string $type
* @return mixed
*/
protected function get_default_for_type( $type ) {
switch ( $type ) {
case 'string':
return '';
case 'boolean':
return false;
case 'integer':
return 0;
case 'number':
return 0.0;
case 'array':
return array();
case 'object':
return array();
default:
return null;
}
}
}

2
wp-includes/version.php
View File

@ -13,7 +13,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.3-alpha-45806';
$wp_version = '5.3-alpha-45807';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.