88 lines
2.2 KiB
JavaScript
88 lines
2.2 KiB
JavaScript
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'use strict';
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var request = require('@root/request');
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request = require('util').promisify(request);
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var dns = require('dns');
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module.exports.create = function(config) {
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// config = { baseUrl, token, apiTimeout }
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var baseUrl = config.baseUrl || 'https://www.duckdns.org';
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var authtoken = config.token;
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var apiTimeout = config.apiTimeout || 5000;
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// return object containing get/set/remove functions
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return {
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set: function(data) {
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var domain_name = data.challenge.identifier.value;
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var txt = data.challenge.dnsAuthorization;
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var url =
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baseUrl +
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'/update?domains=' +
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domain_name +
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'&token=' +
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authtoken +
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'&txt=' +
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txt;
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// console.log("adding txt", data);
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return request({
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method: 'GET',
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url: url
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}).then(function(resp) {
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if (resp === 'OK') {
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return true;
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}
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throw new Error('record did not set. check subdomain, api key, etc');
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});
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},
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remove: function(data) {
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var domain_name = data.challenge.identifier.value;
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var txt = data.challenge.dnsAuthorization;
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var url =
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baseUrl +
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'/update?domains=' +
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domain_name +
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'&token=' +
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authtoken +
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'&txt=' +
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txt +
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'&clear=true';
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// console.log("removing txt");
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return request({
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method: 'GET',
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url: url
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}).then(function(resp) {
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if (resp === 'OK') {
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return true;
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}
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throw new Error('Couldnt remove record. check subdomain, api key, etc');
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});
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},
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get: function(data) {
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// the duckdns doesnt provide an API to fetch DNS records so we are using Node DNS library to get TXT record.
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// We need to add manual delay as the DNS records do not get updated instantly.
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var domain_name = data.challenge.identifier.value;
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return delay(apiTimeout).then(function() {
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console.log('fetching txt', data);
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return new Promise(function(resolve, reject) {
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dns.resolveTxt(domain_name, (err, txt) => {
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if (err) {
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console.error(err);
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reject(null);
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}
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// console.log(txt);
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if (txt && txt[0] && txt[0][0])
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resolve({ dnsAuthorization: txt[0][0] });
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else resolve(null);
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});
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});
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});
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}
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};
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};
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function delay(ms) {
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return new Promise(resolve => setTimeout(resolve, ms));
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}
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