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denoland-deno/ext/node/polyfills/internal_binding/cares_wrap.ts
Bartek Iwańczuk 72fe9bb470
refactor: rename InternalModuleLoader to ExtModuleLoader, use ext: scheme for snapshotted modules (#18041)
This commit renames "deno_core::InternalModuleLoader" to
"ExtModuleLoader" and changes the specifiers used by the 
modules loaded from this loader to "ext:".

"internal:" scheme was really ambiguous and it's more characters than
"ext:", which should result in slightly smaller snapshot size.

Closes https://github.com/denoland/deno/issues/18020
2023-03-08 12:44:54 +01:00

545 lines
15 KiB
TypeScript

// Copyright 2018-2023 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 "ext:deno_node/internal/errors.ts";
import { isIPv4 } from "ext:deno_node/internal/net.ts";
import { codeMap } from "ext:deno_node/internal_binding/uv.ts";
import {
AsyncWrap,
providerType,
} from "ext:deno_node/internal_binding/async_wrap.ts";
// deno-lint-ignore camelcase
import { ares_strerror } from "ext:deno_node/internal_binding/ares.ts";
import { notImplemented } from "ext:deno_node/_utils.ts";
import { isWindows } from "ext:deno_node/_util/os.ts";
interface LookupAddress {
address: string;
family: number;
}
export class GetAddrInfoReqWrap extends AsyncWrap {
family!: number;
hostname!: string;
callback!: (
err: ErrnoException | null,
addressOrAddresses?: string | LookupAddress[] | null,
family?: number,
) => void;
resolve!: (addressOrAddresses: LookupAddress | LookupAddress[]) => void;
reject!: (err: ErrnoException | null) => void;
oncomplete!: (err: number | null, addresses: string[]) => void;
constructor() {
super(providerType.GETADDRINFOREQWRAP);
}
}
export function getaddrinfo(
req: GetAddrInfoReqWrap,
hostname: string,
family: number,
_hints: number,
verbatim: boolean,
): number {
let 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");
}
(async () => {
await Promise.allSettled(
recordTypes.map((recordType) =>
Deno.resolveDns(hostname, recordType).then((records) => {
records.forEach((record) => addresses.push(record));
})
),
);
const error = addresses.length ? 0 : codeMap.get("EAI_NODATA")!;
// TODO(cmorten): needs work
// REF: https://github.com/nodejs/node/blob/master/src/cares_wrap.cc#L1444
if (!verbatim) {
addresses.sort((a: string, b: string): number => {
if (isIPv4(a)) {
return -1;
} else if (isIPv4(b)) {
return 1;
}
return 0;
});
}
// TODO(@bartlomieju): Forces IPv4 as a workaround for Deno not
// aligning with Node on implicit binding on Windows
// REF: https://github.com/denoland/deno/issues/10762
if (isWindows && hostname === "localhost") {
addresses = addresses.filter((address) => isIPv4(address));
}
req.oncomplete(error, addresses);
})();
return 0;
}
export class QueryReqWrap extends AsyncWrap {
bindingName!: string;
hostname!: string;
ttl!: boolean;
callback!: (
err: ErrnoException | null,
// deno-lint-ignore no-explicit-any
records?: any,
) => void;
// deno-lint-ignore no-explicit-any
resolve!: (records: any) => void;
reject!: (err: ErrnoException | null) => void;
oncomplete!: (
err: number,
// deno-lint-ignore no-explicit-any
records: any,
ttls?: number[],
) => void;
constructor() {
super(providerType.QUERYWRAP);
}
}
export interface ChannelWrapQuery {
queryAny(req: QueryReqWrap, name: string): number;
queryA(req: QueryReqWrap, name: string): number;
queryAaaa(req: QueryReqWrap, name: string): number;
queryCaa(req: QueryReqWrap, name: string): number;
queryCname(req: QueryReqWrap, name: string): number;
queryMx(req: QueryReqWrap, name: string): number;
queryNs(req: QueryReqWrap, name: string): number;
queryTxt(req: QueryReqWrap, name: string): number;
querySrv(req: QueryReqWrap, name: string): number;
queryPtr(req: QueryReqWrap, name: string): number;
queryNaptr(req: QueryReqWrap, name: string): number;
querySoa(req: QueryReqWrap, name: string): number;
getHostByAddr(req: QueryReqWrap, name: string): number;
}
function fqdnToHostname(fqdn: string): string {
return fqdn.replace(/\.$/, "");
}
function compressIPv6(address: string): string {
const formatted = address.replace(/\b(?:0+:){2,}/, ":");
const finalAddress = formatted
.split(":")
.map((octet) => {
if (octet.match(/^\d+\.\d+\.\d+\.\d+$/)) {
// decimal
return Number(octet.replaceAll(".", "")).toString(16);
}
return octet.replace(/\b0+/g, "");
})
.join(":");
return finalAddress;
}
export class ChannelWrap extends AsyncWrap implements ChannelWrapQuery {
#servers: [string, number][] = [];
#timeout: number;
#tries: number;
constructor(timeout: number, tries: number) {
super(providerType.DNSCHANNEL);
this.#timeout = timeout;
this.#tries = tries;
}
async #query(query: string, recordType: Deno.RecordType) {
// TODO(@bartlomieju): TTL logic.
let code: number;
let ret: Awaited<ReturnType<typeof Deno.resolveDns>>;
if (this.#servers.length) {
for (const [ipAddr, port] of this.#servers) {
const resolveOptions = {
nameServer: {
ipAddr,
port,
},
};
({ code, ret } = await this.#resolve(
query,
recordType,
resolveOptions,
));
if (code === 0 || code === codeMap.get("EAI_NODATA")!) {
break;
}
}
} else {
({ code, ret } = await this.#resolve(query, recordType));
}
return { code: code!, ret: ret! };
}
async #resolve(
query: string,
recordType: Deno.RecordType,
resolveOptions?: Deno.ResolveDnsOptions,
): Promise<{
code: number;
ret: Awaited<ReturnType<typeof Deno.resolveDns>>;
}> {
let ret: Awaited<ReturnType<typeof Deno.resolveDns>> = [];
let code = 0;
try {
ret = await Deno.resolveDns(query, recordType, resolveOptions);
} catch (e) {
if (e instanceof Deno.errors.NotFound) {
code = codeMap.get("EAI_NODATA")!;
} else {
// TODO(cmorten): map errors to appropriate error codes.
code = codeMap.get("UNKNOWN")!;
}
}
return { code, ret };
}
queryAny(req: QueryReqWrap, name: string): number {
// TODO(@bartlomieju): implemented temporary measure to allow limited usage of
// `resolveAny` like APIs.
//
// Ideally we move to using the "ANY" / "*" DNS query in future
// REF: https://github.com/denoland/deno/issues/14492
(async () => {
const records: { type: Deno.RecordType; [key: string]: unknown }[] = [];
await Promise.allSettled([
this.#query(name, "A").then(({ ret }) => {
ret.forEach((record) => records.push({ type: "A", address: record }));
}),
this.#query(name, "AAAA").then(({ ret }) => {
(ret as string[]).forEach((record) =>
records.push({ type: "AAAA", address: compressIPv6(record) })
);
}),
this.#query(name, "CAA").then(({ ret }) => {
(ret as Deno.CAARecord[]).forEach(({ critical, tag, value }) =>
records.push({
type: "CAA",
[tag]: value,
critical: +critical && 128,
})
);
}),
this.#query(name, "CNAME").then(({ ret }) => {
ret.forEach((record) =>
records.push({ type: "CNAME", value: record })
);
}),
this.#query(name, "MX").then(({ ret }) => {
(ret as Deno.MXRecord[]).forEach(({ preference, exchange }) =>
records.push({
type: "MX",
priority: preference,
exchange: fqdnToHostname(exchange),
})
);
}),
this.#query(name, "NAPTR").then(({ ret }) => {
(ret as Deno.NAPTRRecord[]).forEach(
({ order, preference, flags, services, regexp, replacement }) =>
records.push({
type: "NAPTR",
order,
preference,
flags,
service: services,
regexp,
replacement,
}),
);
}),
this.#query(name, "NS").then(({ ret }) => {
(ret as string[]).forEach((record) =>
records.push({ type: "NS", value: fqdnToHostname(record) })
);
}),
this.#query(name, "PTR").then(({ ret }) => {
(ret as string[]).forEach((record) =>
records.push({ type: "PTR", value: fqdnToHostname(record) })
);
}),
this.#query(name, "SOA").then(({ ret }) => {
(ret as Deno.SOARecord[]).forEach(
({ mname, rname, serial, refresh, retry, expire, minimum }) =>
records.push({
type: "SOA",
nsname: fqdnToHostname(mname),
hostmaster: fqdnToHostname(rname),
serial,
refresh,
retry,
expire,
minttl: minimum,
}),
);
}),
this.#query(name, "SRV").then(({ ret }) => {
(ret as Deno.SRVRecord[]).forEach(
({ priority, weight, port, target }) =>
records.push({
type: "SRV",
priority,
weight,
port,
name: target,
}),
);
}),
this.#query(name, "TXT").then(({ ret }) => {
ret.forEach((record) =>
records.push({ type: "TXT", entries: record })
);
}),
]);
const err = records.length ? 0 : codeMap.get("EAI_NODATA")!;
req.oncomplete(err, records);
})();
return 0;
}
queryA(req: QueryReqWrap, name: string): number {
this.#query(name, "A").then(({ code, ret }) => {
req.oncomplete(code, ret);
});
return 0;
}
queryAaaa(req: QueryReqWrap, name: string): number {
this.#query(name, "AAAA").then(({ code, ret }) => {
const records = (ret as string[]).map((record) => compressIPv6(record));
req.oncomplete(code, records);
});
return 0;
}
queryCaa(req: QueryReqWrap, name: string): number {
this.#query(name, "CAA").then(({ code, ret }) => {
const records = (ret as Deno.CAARecord[]).map(
({ critical, tag, value }) => ({
[tag]: value,
critical: +critical && 128,
}),
);
req.oncomplete(code, records);
});
return 0;
}
queryCname(req: QueryReqWrap, name: string): number {
this.#query(name, "CNAME").then(({ code, ret }) => {
req.oncomplete(code, ret);
});
return 0;
}
queryMx(req: QueryReqWrap, name: string): number {
this.#query(name, "MX").then(({ code, ret }) => {
const records = (ret as Deno.MXRecord[]).map(
({ preference, exchange }) => ({
priority: preference,
exchange: fqdnToHostname(exchange),
}),
);
req.oncomplete(code, records);
});
return 0;
}
queryNaptr(req: QueryReqWrap, name: string): number {
this.#query(name, "NAPTR").then(({ code, ret }) => {
const records = (ret as Deno.NAPTRRecord[]).map(
({ order, preference, flags, services, regexp, replacement }) => ({
flags,
service: services,
regexp,
replacement,
order,
preference,
}),
);
req.oncomplete(code, records);
});
return 0;
}
queryNs(req: QueryReqWrap, name: string): number {
this.#query(name, "NS").then(({ code, ret }) => {
const records = (ret as string[]).map((record) => fqdnToHostname(record));
req.oncomplete(code, records);
});
return 0;
}
queryPtr(req: QueryReqWrap, name: string): number {
this.#query(name, "PTR").then(({ code, ret }) => {
const records = (ret as string[]).map((record) => fqdnToHostname(record));
req.oncomplete(code, records);
});
return 0;
}
querySoa(req: QueryReqWrap, name: string): number {
this.#query(name, "SOA").then(({ code, ret }) => {
let record = {};
if (ret.length) {
const { mname, rname, serial, refresh, retry, expire, minimum } =
ret[0] as Deno.SOARecord;
record = {
nsname: fqdnToHostname(mname),
hostmaster: fqdnToHostname(rname),
serial,
refresh,
retry,
expire,
minttl: minimum,
};
}
req.oncomplete(code, record);
});
return 0;
}
querySrv(req: QueryReqWrap, name: string): number {
this.#query(name, "SRV").then(({ code, ret }) => {
const records = (ret as Deno.SRVRecord[]).map(
({ priority, weight, port, target }) => ({
priority,
weight,
port,
name: target,
}),
);
req.oncomplete(code, records);
});
return 0;
}
queryTxt(req: QueryReqWrap, name: string): number {
this.#query(name, "TXT").then(({ code, ret }) => {
req.oncomplete(code, ret);
});
return 0;
}
getHostByAddr(_req: QueryReqWrap, _name: string): number {
// TODO(@bartlomieju): https://github.com/denoland/deno/issues/14432
notImplemented("cares.ChannelWrap.prototype.getHostByAddr");
}
getServers(): [string, number][] {
return this.#servers;
}
setServers(servers: string | [number, string, number][]): number {
if (typeof servers === "string") {
const tuples: [string, number][] = [];
for (let i = 0; i < servers.length; i += 2) {
tuples.push([servers[i], parseInt(servers[i + 1])]);
}
this.#servers = tuples;
} else {
this.#servers = servers.map(([_ipVersion, ip, port]) => [ip, port]);
}
return 0;
}
setLocalAddress(_addr0: string, _addr1?: string) {
notImplemented("cares.ChannelWrap.prototype.setLocalAddress");
}
cancel() {
notImplemented("cares.ChannelWrap.prototype.cancel");
}
}
const DNS_ESETSRVPENDING = -1000;
const EMSG_ESETSRVPENDING = "There are pending queries.";
export function strerror(code: number) {
return code === DNS_ESETSRVPENDING
? EMSG_ESETSRVPENDING
: ares_strerror(code);
}