homer/lib/server.js

Dynamic DNS server

var dns = require('native-dns');

module.exports = {
  create: makeServer
};

function makeServer(db) {
  var server = dns.createServer();

  server.on('request', function (request, response) {
    if (request && request.question && request.question[0]) {
      db.get(request.question[0].name, function (err, data) {
        if (data && data.ip && request.question[0].type === 1) {
          response.answer.push(dns.A({
            name: request.question[0].name,
            address: data.ip,
            ttl: 60,
          }));
        } else {
          response.header.rcode = 3;
        }
        response.send();
      });
    } else {
      response.header.rcode = 3;
      response.send();
    }
  });

  server.on('error', function (err, buff, req, res) {
    console.log(err.stack);
  });

  return server;
}