$token, 'external_user_id' => (int) $user_id, ); } /** * This function mirrors Jetpack_Data::is_usable_domain() in the WPCOM codebase. * * @param $domain * @param array $extra * * @return bool|WP_Error */ public static function is_usable_domain( $domain, $extra = array() ) { // If it's empty, just fail out. if ( ! $domain ) { return new WP_Error( 'fail_domain_empty', sprintf( __( 'Domain `%1$s` just failed is_usable_domain check as it is empty.', 'jetpack' ), $domain ) ); } // None of the explicit localhosts. $forbidden_domains = array( 'wordpress.com', 'localhost', 'localhost.localdomain', '127.0.0.1', 'local.wordpress.dev', // VVV 'local.wordpress-trunk.dev', // VVV 'src.wordpress-develop.dev', // VVV 'build.wordpress-develop.dev', // VVV ); if ( in_array( $domain, $forbidden_domains ) ) { return new WP_Error( 'fail_domain_forbidden', sprintf( __( 'Domain `%1$s` just failed is_usable_domain check as it is in the forbidden array.', 'jetpack' ), $domain ) ); } // No .dev or .local domains if ( preg_match( '#\.(dev|local)$#i', $domain ) ) { return new WP_Error( 'fail_domain_tld', sprintf( __( 'Domain `%1$s` just failed is_usable_domain check as it uses an invalid top level domain.', 'jetpack' ), $domain ) ); } // No WPCOM subdomains if ( preg_match( '#\.wordpress\.com$#i', $domain ) ) { return new WP_Error( 'fail_subdomain_wpcom', sprintf( __( 'Domain `%1$s` just failed is_usable_domain check as it is a subdomain of WordPress.com.', 'jetpack' ), $domain ) ); } // If PHP was compiled without support for the Filter module (very edge case) if ( ! function_exists( 'filter_var' ) ) { // Just pass back true for now, and let wpcom sort it out. return true; } // Check the IP to make sure it's pingable. $ip = gethostbyname( $domain ); // Doing this again as I was getting some false positives when gethostbyname() flaked out and returned the domain. $ip = filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 ) ? $ip : gethostbyname( $ip ); if ( ! filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE | FILTER_FLAG_IPV4 ) && ! self::php_bug_66229_check( $ip ) ) { return new WP_Error( 'fail_domain_bad_ip_range', sprintf( __( 'Domain `%1$s` just failed is_usable_domain check as its IP `%2$s` is either invalid, or in a reserved or private range.', 'jetpack' ), $domain, $ip ) ); } return true; } /** * Returns true if the IP address passed in should not be in a reserved range, even if PHP says that it is. * See: https://bugs.php.net/bug.php?id=66229 and https://github.com/php/php-src/commit/d1314893fd1325ca6aa0831101896e31135a2658 * * This function mirrors Jetpack_Data::php_bug_66229_check() in the WPCOM codebase. */ public static function php_bug_66229_check( $ip ) { if ( ! filter_var( $ip, FILTER_VALIDATE_IP ) ) { return false; } $ip_arr = array_map( 'intval', explode( '.', $ip ) ); if ( 128 == $ip_arr[0] && 0 == $ip_arr[1] ) { return true; } if ( 191 == $ip_arr[0] && 255 == $ip_arr[1] ) { return true; } return false; } }