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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.// Copyright Joyent, Inc. and other Node contributors.//// Permission is hereby granted, free of charge, to any person obtaining a// copy of this software and associated documentation files (the// "Software"), to deal in the Software without restriction, including// without limitation the rights to use, copy, modify, merge, publish,// distribute, sublicense, and/or sell copies of the Software, and to permit// persons to whom the Software is furnished to do so, subject to the// following conditions://// The above copyright notice and this permission notice shall be included// in all copies or substantial portions of the Software.//// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE// USE OR OTHER DEALINGS IN THE SOFTWARE.
// This module ports:// - https://github.com/nodejs/node/blob/master/src/cares_wrap.cc// - https://github.com/nodejs/node/blob/master/src/cares_wrap.h
import type { ErrnoException } from "../internal/errors.ts";import { isIPv4 } from "../internal/net.ts";import { codeMap } from "./uv.ts";import { AsyncWrap, providerType } from "./async_wrap.ts";
interface LookupAddress {  address: string;  family: number;}
// REF: https://github.com/nodejs/node/blob/master/deps/cares/include/ares.h#L190export const ARES_AI_CANONNAME = (1 << 0);export const ARES_AI_NUMERICHOST = (1 << 1);export const ARES_AI_PASSIVE = (1 << 2);export const ARES_AI_NUMERICSERV = (1 << 3);export const AI_V4MAPPED = (1 << 4);export const AI_ALL = (1 << 5);export const AI_ADDRCONFIG = (1 << 6);export const ARES_AI_NOSORT = (1 << 7);export const ARES_AI_ENVHOSTS = (1 << 8);
export class GetAddrInfoReqWrap extends AsyncWrap {  callback!: (    err: ErrnoException | null,    addressOrAddresses?: string | LookupAddress[] | null,    family?: number,  ) => void;  family!: number;  hostname!: string;  oncomplete!: (err: number | null, addresses: string[]) => void;
  constructor() {    super(providerType.GETADDRINFOREQWRAP);  }}
export function getaddrinfo(  req: GetAddrInfoReqWrap,  hostname: string,  family: number,  _hints: number,  verbatim: boolean,) {  (async () => {    const addresses: string[] = [];
    // TODO(cmorten): use hints    // REF: https://nodejs.org/api/dns.html#dns_supported_getaddrinfo_flags
    const recordTypes: ("A" | "AAAA")[] = [];
    if (family === 0 || family === 4) {      recordTypes.push("A");    }    if (family === 0 || family === 6) {      recordTypes.push("AAAA");    }
    await Promise.allSettled(      recordTypes.map((recordType) =>        Deno.resolveDns(hostname, recordType).then((records) => {          records.forEach((record) => addresses.push(record));        })      ),    );
    const error = addresses.length ? null : codeMap.get("EAI_NODATA")!;
    if (!verbatim) {      addresses.sort((a: string, b: string): number => {        if (isIPv4(a)) {          return -1;        } else if (isIPv4(b)) {          return 1;        }
        return 0;      });    }
    req.oncomplete(error, addresses);  })();}