1
0
mirror of https://github.com/uetchy/namae.git synced 2025-03-17 04:30:31 +09:00
namae/api/services/dns/[query].ts
2022-03-09 15:16:54 +09:00

35 lines
954 B
TypeScript

import dns from 'dns';
import { send, sendError } from '../../../util/http';
import { VercelRequest, VercelResponse } from '@vercel/node';
function resolvePromise(hostname: string): Promise<string[]> {
return new Promise((resolve, reject) => {
dns.resolve4(hostname, function (err, addresses) {
if (err) return reject(err);
resolve(addresses);
});
});
}
export default async function handler(
req: VercelRequest,
res: VercelResponse
): Promise<void> {
const { query } = req.query;
if (!query || typeof query !== 'string') {
return sendError(res, new Error('No query given'));
}
try {
const response = await resolvePromise(query);
const availability = response && response.length > 0 ? false : true;
send(res, { availability });
} catch (err: any) {
if (err.code === 'ENODATA' || err.code === 'ENOTFOUND') {
return send(res, { availability: true });
}
sendError(res, err);
}
}