72 lines
1.7 KiB
TypeScript
72 lines
1.7 KiB
TypeScript
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// Copyright 2024 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { join } from 'path';
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import { lookup as lookupCb } from 'dns';
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import { writeFile } from 'fs/promises';
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import { promisify } from 'util';
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import type { ResolvedEndpoint } from 'electron';
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import { isNotNil } from '../util/isNotNil';
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const lookup = promisify(lookupCb);
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const FALLBACK_DOMAINS = [
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'chat.signal.org',
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'storage.signal.org',
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'cdsi.signal.org',
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'cdn.signal.org',
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'cdn2.signal.org',
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'cdn3.signal.org',
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'updates2.signal.org',
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'sfu.voip.signal.org',
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'create.signal.art',
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];
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async function main() {
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const config = await Promise.all(
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FALLBACK_DOMAINS.sort().map(async domain => {
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const addresses = await lookup(domain, { all: true });
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const endpoints = addresses
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.map(({ address, family }): ResolvedEndpoint | null => {
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if (family === 4) {
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return { family: 'ipv4', address };
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}
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if (family === 6) {
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return { family: 'ipv6', address };
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}
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return null;
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})
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.filter(isNotNil)
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.sort((a, b) => {
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if (a.family < b.family) {
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return -1;
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}
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if (a.family > b.family) {
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return 1;
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}
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if (a.address < b.address) {
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return -1;
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}
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if (a.address > b.address) {
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return 1;
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}
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return 0;
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});
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return { domain, endpoints };
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})
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);
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const outPath = join(__dirname, '../../build/dns-fallback.json');
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await writeFile(outPath, `${JSON.stringify(config, null, 2)}\n`);
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}
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main().catch(error => {
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console.error(error);
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process.exit(1);
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});
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