/* * Copyright 2020 gRPC authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ export interface GrpcUri { scheme?: string; authority?: string; path: string; } /* * The groups correspond to URI parts as follows: * 1. scheme * 2. authority * 3. path */ const URI_REGEX = /^(?:([A-Za-z0-9+.-]+):)?(?:\/\/([^/]*)\/)?(.+)$/; export function parseUri(uriString: string): GrpcUri | null { const parsedUri = URI_REGEX.exec(uriString); if (parsedUri === null) { return null; } return { scheme: parsedUri[1], authority: parsedUri[2], path: parsedUri[3], }; } export interface HostPort { host: string; port?: number; } const NUMBER_REGEX = /^\d+$/; export function splitHostPort(path: string): HostPort | null { if (path.startsWith('[')) { const hostEnd = path.indexOf(']'); if (hostEnd === -1) { return null; } const host = path.substring(1, hostEnd); /* Only an IPv6 address should be in bracketed notation, and an IPv6 * address should have at least one colon */ if (host.indexOf(':') === -1) { return null; } if (path.length > hostEnd + 1) { if (path[hostEnd + 1] === ':') { const portString = path.substring(hostEnd + 2); if (NUMBER_REGEX.test(portString)) { return { host: host, port: +portString, }; } else { return null; } } else { return null; } } else { return { host, }; } } else { const splitPath = path.split(':'); /* Exactly one colon means that this is host:port. Zero colons means that * there is no port. And multiple colons means that this is a bare IPv6 * address with no port */ if (splitPath.length === 2) { if (NUMBER_REGEX.test(splitPath[1])) { return { host: splitPath[0], port: +splitPath[1], }; } else { return null; } } else { return { host: path, }; } } } export function uriToString(uri: GrpcUri): string { let result = ''; if (uri.scheme !== undefined) { result += uri.scheme + ':'; } if (uri.authority !== undefined) { result += '//' + uri.authority + '/'; } result += uri.path; return result; }