. */ return apply_filters( 'http_origin', $origin ); } /** * Retrieve list of allowed HTTP origins. * * @since 3.4.0 * * @return string[] Array of origin URLs. */ function get_allowed_http_origins() { $admin_origin = parse_url( admin_url() ); $home_origin = parse_url( home_url() ); // @todo Preserve port? $allowed_origins = array_unique( array( 'http://' . $admin_origin['host'], 'https://' . $admin_origin['host'], 'http://' . $home_origin['host'], 'https://' . $home_origin['host'], ) ); /** * Change the origin types allowed for HTTP requests. * * @since 3.4.0 * * @param string[] $allowed_origins { * Array of default allowed HTTP origins. * * @type string $0 Non-secure URL for admin origin. * @type string $1 Secure URL for admin origin. * @type string $2 Non-secure URL for home origin. * @type string $3 Secure URL for home origin. * } */ return apply_filters( 'allowed_http_origins', $allowed_origins ); } /** * Determines if the HTTP origin is an authorized one. * * @since 3.4.0 * * @param null|string $origin Origin URL. If not provided, the value of get_http_origin() is used. * @return string Origin URL if allowed, empty string if not. */ function is_allowed_http_origin( $origin = null ) { $origin_arg = $origin; if ( null === $origin ) { $origin = get_http_origin(); } if ( $origin && ! in_array( $origin, get_allowed_http_origins(), true ) ) { $origin = ''; } /** * Change the allowed HTTP origin result. * * @since 3.4.0 * * @param string $origin Origin URL if allowed, empty string if not. * @param string $origin_arg Original origin string passed into is_allowed_http_origin function. */ return apply_filters( 'allowed_http_origin', $origin, $origin_arg ); } /** * Send Access-Control-Allow-Origin and related headers if the current request * is from an allowed origin. * * If the request is an OPTIONS request, the script exits with either access * control headers sent, or a 403 response if the origin is not allowed. For * other request methods, you will receive a return value. * * @since 3.4.0 * * @return string|false Returns the origin URL if headers are sent. Returns false * if headers are not sent. */ function send_origin_headers() { $origin = get_http_origin(); if ( is_allowed_http_origin( $origin ) ) { header( 'Access-Control-Allow-Origin: ' . $origin ); header( 'Access-Control-Allow-Credentials: true' ); if ( 'OPTIONS' === $_SERVER['REQUEST_METHOD'] ) { exit; } return $origin; } if ( 'OPTIONS' === $_SERVER['REQUEST_METHOD'] ) { status_header( 403 ); exit; } return false; } /** * Validate a URL for safe use in the HTTP API. * * @since 3.5.2 * * @param string $url Request URL. * @return string|false URL or false on failure. */ function wp_http_validate_url( $url ) { $original_url = $url; $url = wp_kses_bad_protocol( $url, array( 'http', 'https' ) ); if ( ! $url || strtolower( $url ) !== strtolower( $original_url ) ) { return false; } $parsed_url = parse_url( $url ); if ( ! $parsed_url || empty( $parsed_url['host'] ) ) { return false; } if ( isset( $parsed_url['user'] ) || isset( $parsed_url['pass'] ) ) { return false; } if ( false !== strpbrk( $parsed_url['host'], ':#?[]' ) ) { return false; } $parsed_home = parse_url( get_option( 'home' ) ); if ( isset( $parsed_home['host'] ) ) { $same_host = strtolower( $parsed_home['host'] ) === strtolower( $parsed_url['host'] ); } else { $same_host = false; } if ( ! $same_host ) { $host = trim( $parsed_url['host'], '.' ); if ( preg_match( '#^(([1-9]?\d|1\d\d|25[0-5]|2[0-4]\d)\.){3}([1-9]?\d|1\d\d|25[0-5]|2[0-4]\d)$#', $host ) ) { $ip = $host; } else { $ip = gethostbyname( $host ); if ( $ip === $host ) { // Error condition for gethostbyname(). return false; } } if ( $ip ) { $parts = array_map( 'intval', explode( '.', $ip ) ); if ( 127 === $parts[0] || 10 === $parts[0] || 0 === $parts[0] || ( 172 === $parts[0] && 16 <= $parts[1] && 31 >= $parts[1] ) || ( 192 === $parts[0] && 168 === $parts[1] ) ) { // If host appears local, reject unless specifically allowed. /** * Check if HTTP request is external or not. * * Allows to change and allow external requests for the HTTP request. * * @since 3.6.0 * * @param bool $external Whether HTTP request is external or not. * @param string $host Host name of the requested URL. * @param string $url Requested URL. */ if ( ! apply_filters( 'http_request_host_is_external', false, $host, $url ) ) { return false; } } } } if ( empty( $parsed_url['port'] ) ) { return $url; } $port = $parsed_url['port']; if ( 80 === $port || 443 === $port || 8080 === $port ) { return $url; } if ( $parsed_home && $same_host && isset( $parsed_home['port'] ) && $parsed_home['port'] === $port ) { return $url; } return false; } /** * Mark allowed redirect hosts safe for HTTP requests as well. * * Attached to the {@see 'http_request_host_is_external'} filter. * * @since 3.6.0 * * @param bool $is_external * @param string $host * @return bool */ function allowed_http_request_hosts( $is_external, $host ) { if ( ! $is_external && wp_validate_redirect( 'http://' . $host ) ) { $is_external = true; } return $is_external; } /** * Adds any domain in a multisite installation for safe HTTP requests to the * allowed list. * * Attached to the {@see 'http_request_host_is_external'} filter. * * @since 3.6.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param bool $is_external * @param string $host * @return bool */ function ms_allowed_http_request_hosts( $is_external, $host ) { global $wpdb; static $queried = array(); if ( $is_external ) { return $is_external; } if ( get_network()->domain === $host ) { return true; } if ( isset( $queried[ $host ] ) ) { return $queried[ $host ]; } $queried[ $host ] = (bool) $wpdb->get_var( $wpdb->prepare( "SELECT domain FROM $wpdb->blogs WHERE domain = %s LIMIT 1", $host ) ); return $queried[ $host ]; } /** * A wrapper for PHP's parse_url() function that handles consistency in the return * values across PHP versions. * * PHP 5.4.7 expanded parse_url()'s ability to handle non-absolute url's, including * schemeless and relative url's with :// in the path. This function works around * those limitations providing a standard output on PHP 5.2~5.4+. * * Secondly, across various PHP versions, schemeless URLs starting containing a ":" * in the query are being handled inconsistently. This function works around those * differences as well. * * @since 4.4.0 * @since 4.7.0 The `$component` parameter was added for parity with PHP's `parse_url()`. * * @link https://www.php.net/manual/en/function.parse-url.php * * @param string $url The URL to parse. * @param int $component The specific component to retrieve. Use one of the PHP * predefined constants to specify which one. * Defaults to -1 (= return all parts as an array). * @return mixed False on parse failure; Array of URL components on success; * When a specific component has been requested: null if the component * doesn't exist in the given URL; a string or - in the case of * PHP_URL_PORT - integer when it does. See parse_url()'s return values. */ function wp_parse_url( $url, $component = -1 ) { $to_unset = array(); $url = strval( $url ); if ( '//' === substr( $url, 0, 2 ) ) { $to_unset[] = 'scheme'; $url = 'placeholder:' . $url; } elseif ( '/' === substr( $url, 0, 1 ) ) { $to_unset[] = 'scheme'; $to_unset[] = 'host'; $url = 'placeholder://placeholder' . $url; } $parts = parse_url( $url ); if ( false === $parts ) { // Parsing failure. return $parts; } // Remove the placeholder values. foreach ( $to_unset as $key ) { unset( $parts[ $key ] ); } return _get_component_from_parsed_url_array( $parts, $component ); } /** * Retrieve a specific component from a parsed URL array. * * @internal * * @since 4.7.0 * @access private * * @link https://www.php.net/manual/en/function.parse-url.php * * @param array|false $url_parts The parsed URL. Can be false if the URL failed to parse. * @param int $component The specific component to retrieve. Use one of the PHP * predefined constants to specify which one. * Defaults to -1 (= return all parts as an array). * @return mixed False on parse failure; Array of URL components on success; * When a specific component has been requested: null if the component * doesn't exist in the given URL; a string or - in the case of * PHP_URL_PORT - integer when it does. See parse_url()'s return values. */ function _get_component_from_parsed_url_array( $url_parts, $component = -1 ) { if ( -1 === $component ) { return $url_parts; } $key = _wp_translate_php_url_constant_to_key( $component ); if ( false !== $key && is_array( $url_parts ) && isset( $url_parts[ $key ] ) ) { return $url_parts[ $key ]; } else { return null; } } /** * Translate a PHP_URL_* constant to the named array keys PHP uses. * * @internal * * @since 4.7.0 * @access private * * @link https://www.php.net/manual/en/url.constants.php * * @param int $constant PHP_URL_* constant. * @return string|false The named key or false. */ function _wp_translate_php_url_constant_to_key( $constant ) { $translation = array( PHP_URL_SCHEME => 'scheme', PHP_URL_HOST => 'host', PHP_URL_PORT => 'port', PHP_URL_USER => 'user', PHP_URL_PASS => 'pass', PHP_URL_PATH => 'path', PHP_URL_QUERY => 'query', PHP_URL_FRAGMENT => 'fragment', ); if ( isset( $translation[ $constant ] ) ) { return $translation[ $constant ]; } else { return false; } } ost_date_gmt ); } if ( in_array( 'id', $fields, true ) ) { $data['id'] = $post->ID; } if ( in_array( 'modified', $fields, true ) ) { $data['modified'] = $this->prepare_date_response( $post->post_modified_gmt, $post->post_modified ); } if ( in_array( 'modified_gmt', $fields, true ) ) { $data['modified_gmt'] = $this->prepare_date_response( $post->post_modified_gmt ); } if ( in_array( 'parent', $fields, true ) ) { $data['parent'] = (int) $post->post_parent; } if ( in_array( 'slug', $fields, true ) ) { $data['slug'] = $post->post_name; } if ( in_array( 'guid', $fields, true ) ) { $data['guid'] = array( /** This filter is documented in wp-includes/post-template.php */ 'rendered' => apply_filters( 'get_the_guid', $post->guid, $post->ID ), 'raw' => $post->guid, ); } if ( in_array( 'title', $fields, true ) ) { $data['title'] = array( 'raw' => $post->post_title, 'rendered' => get_the_title( $post->ID ), ); } if ( in_array( 'content', $fields, true ) ) { $data['content'] = array( 'raw' => $post->post_content, /** This filter is documented in wp-includes/post-template.php */ 'rendered' => apply_filters( 'the_content', $post->post_content ), ); } if ( in_array( 'excerpt', $fields, true ) ) { $data['excerpt'] = array( 'raw' => $post->post_excerpt, 'rendered' => $this->prepare_excerpt_response( $post->post_excerpt, $post ), ); } $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 ( ! empty( $data['parent'] ) ) { $response->add_link( 'parent', rest_url( sprintf( '%s/%s/%d', $this->namespace, $this->parent_base, $data['parent'] ) ) ); } /** * Filters a revision returned from the API. * * Allows modification of the revision right before it is returned. * * @since 4.7.0 * * @param WP_REST_Response $response The response object. * @param WP_Post $post The original revision object. * @param WP_REST_Request $request Request used to generate the response. */ return apply_filters( 'rest_prepare_revision', $response, $post, $request ); } /** * Checks the post_date_gmt or modified_gmt and prepare any post or * modified date for single post output. * * @since 4.7.0 * * @param string $date_gmt GMT publication time. * @param string|null $date Optional. Local publication time. Default null. * @return string|null ISO8601/RFC3339 formatted datetime, otherwise null. */ protected function prepare_date_response( $date_gmt, $date = null ) { if ( '0000-00-00 00:00:00' === $date_gmt ) { return null; } if ( isset( $date ) ) { return mysql_to_rfc3339( $date ); } return mysql_to_rfc3339( $date_gmt ); } /** * Retrieves the revision's schema, conforming to JSON Schema. * * @since 4.7.0 * * @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->parent_post_type}-revision", 'type' => 'object', // Base properties for every Revision. 'properties' => array( 'author' => array( 'description' => __( 'The ID for the author of the object.' ), 'type' => 'integer', 'context' => array( 'view', 'edit', 'embed' ), ), 'date' => array( 'description' => __( "The date the object was published, in the site's timezone." ), 'type' => 'string', 'format' => 'date-time', 'context' => array( 'view', 'edit', 'embed' ), ), 'date_gmt' => array( 'description' => __( 'The date the object was published, as GMT.' ), 'type' => 'string', 'format' => 'date-time', 'context' => array( 'view', 'edit' ), ), 'guid' => array( 'description' => __( 'GUID for the object, as it exists in the database.' ), 'type' => 'string', 'context' => array( 'view', 'edit' ), ), 'id' => array( 'description' => __( 'Unique identifier for the object.' ), 'type' => 'integer', 'context' => array( 'view', 'edit', 'embed' ), ), 'modified' => array( 'description' => __( "The date the object was last modified, in the site's timezone." ), 'type' => 'string', 'format' => 'date-time', 'context' => array( 'view', 'edit' ), ), 'modified_gmt' => array( 'description' => __( 'The date the object was last modified, as GMT.' ), 'type' => 'string', 'format' => 'date-time', 'context' => array( 'view', 'edit' ), ), 'parent' => array( 'description' => __( 'The ID for the parent of the object.' ), 'type' => 'integer', 'context' => array( 'view', 'edit', 'embed' ), ), 'slug' => array( 'description' => __( 'An alphanumeric identifier for the object unique to its type.' ), 'type' => 'string', 'context' => array( 'view', 'edit', 'embed' ), ), ), ); $parent_schema = $this->parent_controller->get_item_schema(); if ( ! empty( $parent_schema['properties']['title'] ) ) { $schema['properties']['title'] = $parent_schema['properties']['title']; } if ( ! empty( $parent_schema['properties']['content'] ) ) { $schema['properties']['content'] = $parent_schema['properties']['content']; } if ( ! empty( $parent_schema['properties']['excerpt'] ) ) { $schema['properties']['excerpt'] = $parent_schema['properties']['excerpt']; } if ( ! empty( $parent_schema['properties']['guid'] ) ) { $schema['properties']['guid'] = $parent_schema['properties']['guid']; } $this->schema = $schema; return $this->add_additional_fields_schema( $this->schema ); } /** * Retrieves the query params for collections. * * @since 4.7.0 * * @return array Collection parameters. */ public function get_collection_params() { $query_params = parent::get_collection_params(); $query_params['context']['default'] = 'view'; unset( $query_params['per_page']['default'] ); $query_params['exclude'] = array( 'description' => __( 'Ensure result set excludes specific IDs.' ), 'type' => 'array', 'items' => array( 'type' => 'integer', ), 'default' => array(), ); $query_params['include'] = array( 'description' => __( 'Limit result set to specific IDs.' ), 'type' => 'array', 'items' => array( 'type' => 'integer', ), 'default' => array(), ); $query_params['offset'] = array( 'description' => __( 'Offset the result set by a specific number of items.' ), 'type' => 'integer', ); $query_params['order'] = array( 'description' => __( 'Order sort attribute ascending or descending.' ), 'type' => 'string', 'default' => 'desc', 'enum' => array( 'asc', 'desc' ), ); $query_params['orderby'] = array( 'description' => __( 'Sort collection by object attribute.' ), 'type' => 'string', 'default' => 'date', 'enum' => array( 'date', 'id', 'include', 'relevance', 'slug', 'include_slugs', 'title', ), ); return $query_params; } /** * Checks the post excerpt and prepare it for single post output. * * @since 4.7.0 * * @param string $excerpt The post excerpt. * @param WP_Post $post Post revision object. * @return string Prepared excerpt or empty string. */ protected function prepare_excerpt_response( $excerpt, $post ) { /** This filter is documented in wp-includes/post-template.php */ $excerpt = apply_filters( 'the_excerpt', $excerpt, $post ); if ( empty( $excerpt ) ) { return ''; } return $excerpt; } }