Girish Ramakrishnan
255 lines
10 KiB
JavaScript
255 lines
10 KiB
JavaScript
'use strict';
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exports = module.exports = {
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removePrivateFields,
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injectPrivateFields,
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upsert,
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get,
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del,
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wait,
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verifyDomainConfig
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};
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const assert = require('assert'),
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BoxError = require('../boxerror.js'),
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constants = require('../constants.js'),
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debug = require('debug')('box:dns/bunny'),
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dig = require('../dig.js'),
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dns = require('../dns.js'),
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safe = require('safetydance'),
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superagent = require('superagent'),
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waitForDns = require('./waitfordns.js');
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const BUNNY_API = 'https://api.bunny.net';
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const RECORD_TYPES = [ 'A', 'AAAA', 'CNAME', 'TXT', 'MX', 'RDR', '???', 'PZ', 'SRV', 'CAA', 'PTR', 'SCR', 'NS' ];
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function recordTypeToString(value) {
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return RECORD_TYPES[value];
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}
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function recordTypeToInt(value) {
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return RECORD_TYPES.indexOf(value);
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}
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function formatError(response) {
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return `Bunny DNS error ${response.statusCode} ${JSON.stringify(response.body)}`;
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}
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function removePrivateFields(domainObject) {
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domainObject.config.accessKey = constants.SECRET_PLACEHOLDER;
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return domainObject;
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}
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function injectPrivateFields(newConfig, currentConfig) {
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if (newConfig.accessKey === constants.SECRET_PLACEHOLDER) newConfig.accessKey = currentConfig.accessKey;
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}
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async function getZoneId(domainConfig, zoneName) {
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assert.strictEqual(typeof domainConfig, 'object');
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assert.strictEqual(typeof zoneName, 'string');
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const [error, response] = await safe(superagent.get(`${BUNNY_API}/dnszone?page=1&perPage=1000&search=${zoneName}`)
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.set('AccessKey', domainConfig.accessKey)
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.retry(5)
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.timeout(30 * 1000)
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.ok(() => true));
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if (error) throw new BoxError(BoxError.NETWORK_ERROR, error.message);
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if (response.statusCode === 401) throw new BoxError(BoxError.ACCESS_DENIED, formatError(response));
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if (response.statusCode !== 200) throw new BoxError(BoxError.EXTERNAL_ERROR, formatError(response));
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if (!Array.isArray(response.body.Items)) throw new BoxError(BoxError.EXTERNAL_ERROR, `Invalid records in response: ${JSON.stringify(response.body)}`);
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const item = response.body.Items.filter(item => item.Domain === zoneName);
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if (item.length === 0) throw new BoxError(BoxError.NOT_FOUND, 'Domain not found');
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return item[0].Id;
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}
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async function getDnsRecords(domainConfig, zoneName, name, type) {
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assert.strictEqual(typeof domainConfig, 'object');
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assert.strictEqual(typeof zoneName, 'string');
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assert.strictEqual(typeof name, 'string');
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assert.strictEqual(typeof type, 'string');
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debug(`get: ${name} in zone ${zoneName} of type ${type}`);
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const zoneId = await getZoneId(domainConfig, zoneName);
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const [error, response] = await safe(superagent.get(`${BUNNY_API}/dnszone/${zoneId}`)
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.set('AccessKey', domainConfig.accessKey)
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.retry(5)
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.timeout(30 * 1000)
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.ok(() => true));
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if (error) throw new BoxError(BoxError.NETWORK_ERROR, error.message);
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if (response.statusCode === 401) throw new BoxError(BoxError.ACCESS_DENIED, formatError(response));
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if (response.statusCode !== 200) throw new BoxError(BoxError.EXTERNAL_ERROR, formatError(response));
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if (!Array.isArray(response.body.Records)) throw new BoxError(BoxError.EXTERNAL_ERROR, `Invalid records in response: ${JSON.stringify(response.body)}`);
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return response.body.Records.filter(r => recordTypeToString(r.Type) === type && r.Name === name);
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}
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async function upsert(domainObject, location, type, values) {
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assert.strictEqual(typeof domainObject, 'object');
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assert.strictEqual(typeof location, 'string');
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assert.strictEqual(typeof type, 'string');
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assert(Array.isArray(values));
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const domainConfig = domainObject.config,
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zoneName = domainObject.zoneName,
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name = dns.getName(domainObject, location, type) || '';
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debug(`upsert: ${name} in zone ${zoneName} of type ${type} with values ${JSON.stringify(values)}`);
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const zoneId = await getZoneId(domainConfig, zoneName);
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const records = await getDnsRecords(domainConfig, zoneName, name, type);
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// used to track available records to update instead of create
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let i = 0, recordIds = [];
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for (let value of values) {
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let priority = 0;
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if (type === 'MX') {
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priority = parseInt(value.split(' ')[0], 10);
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value = value.split(' ')[1];
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} else if (type === 'TXT') {
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value = value.replace(/^"(.*)"$/, '$1'); // strip any double quotes
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}
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const data = {
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Type: recordTypeToInt(type),
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Name: name,
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Value: value,
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Priority: priority,
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Ttl: 10
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};
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if (i >= records.length) {
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const [error, response] = await safe(superagent.put(`${BUNNY_API}/dnszone/${zoneId}/records`)
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.set('AccessKey', domainConfig.accessKey)
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.send(data)
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.retry(5)
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.timeout(30 * 1000)
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.ok(() => true));
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if (error) throw new BoxError(BoxError.NETWORK_ERROR, error.message);
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if (response.statusCode === 401) throw new BoxError(BoxError.ACCESS_DENIED, formatError(response));
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if (response.statusCode !== 201) throw new BoxError(BoxError.EXTERNAL_ERROR, formatError(response));
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} else {
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const [error, response] = await safe(superagent.post(`${BUNNY_API}/dnszone/${zoneId}/records/${records[i].Id}`)
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.set('AccessKey', domainConfig.accessKey)
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.send(data)
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.retry(5)
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.timeout(30 * 1000)
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.ok(() => true));
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++i;
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if (error) throw new BoxError(BoxError.NETWORK_ERROR, error.message);
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if (response.statusCode === 401) throw new BoxError(BoxError.ACCESS_DENIED, formatError(response));
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if (response.statusCode !== 204) throw new BoxError(BoxError.EXTERNAL_ERROR, formatError(response));
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recordIds.push(safe.query(records.body, 'domain_record.id'));
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}
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}
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for (let j = values.length + 1; j < records.length; j++) {
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const [error] = await safe(superagent.del(`${BUNNY_API}/dnszone/${zoneId}/records/${records[j].Id}`)
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.set('AccessKey', domainConfig.accessKey)
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.retry(5)
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.timeout(30 * 1000)
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.ok(() => true));
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if (error) debug(`upsert: error removing record ${records[j].id}: ${error.message}`);
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}
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debug('upsert: completed with recordIds:%j', recordIds);
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}
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async function get(domainObject, location, type) {
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assert.strictEqual(typeof domainObject, 'object');
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assert.strictEqual(typeof location, 'string');
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assert.strictEqual(typeof type, 'string');
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const domainConfig = domainObject.config,
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zoneName = domainObject.zoneName,
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name = dns.getName(domainObject, location, type) || '';
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const records = await getDnsRecords(domainConfig, zoneName, name, type);
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return records.map(r => r.Value);
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}
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async function del(domainObject, location, type, values) {
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assert.strictEqual(typeof domainObject, 'object');
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assert.strictEqual(typeof location, 'string');
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assert.strictEqual(typeof type, 'string');
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assert(Array.isArray(values));
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const domainConfig = domainObject.config,
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zoneName = domainObject.zoneName,
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name = dns.getName(domainObject, location, type) || '';
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debug(`del: ${name} in zone ${zoneName} of type ${type} with values ${JSON.stringify(values)}`);
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const zoneId = await getZoneId(domainConfig, zoneName);
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const records = await getDnsRecords(domainConfig, zoneName, name, type);
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const ids = records.filter(r => values.includes(r.Value)).map(r => r.Id);
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for (const id of ids) {
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const [error, response] = await safe(superagent.del(`${BUNNY_API}/dnszone/${zoneId}/records/${id}`)
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.set('AccessKey', domainConfig.accessKey)
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.retry(5)
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.timeout(30 * 1000)
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.ok(() => true));
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if (error) throw new BoxError(BoxError.NETWORK_ERROR, error.message);
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if (response.statusCode === 401) throw new BoxError(BoxError.ACCESS_DENIED, formatError(response));
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if (response.statusCode === 400) continue;
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if (response.statusCode !== 204) throw new BoxError(BoxError.EXTERNAL_ERROR, formatError(response));
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}
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}
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async function wait(domainObject, subdomain, type, value, options) {
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assert.strictEqual(typeof domainObject, 'object');
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assert.strictEqual(typeof subdomain, 'string');
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assert.strictEqual(typeof type, 'string');
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assert.strictEqual(typeof value, 'string');
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assert(options && typeof options === 'object'); // { interval: 5000, times: 50000 }
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const fqdn = dns.fqdn(subdomain, domainObject.domain);
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await waitForDns(fqdn, domainObject.zoneName, type, value, options);
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}
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async function verifyDomainConfig(domainObject) {
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assert.strictEqual(typeof domainObject, 'object');
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const domainConfig = domainObject.config,
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zoneName = domainObject.zoneName;
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if (!domainConfig.accessKey || typeof domainConfig.accessKey !== 'string') throw new BoxError(BoxError.BAD_FIELD, 'accessKey must be a non-empty string');
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const ip = '127.0.0.1';
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const credentials = {
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accessKey: domainConfig.accessKey,
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};
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if (constants.TEST) return credentials; // this shouldn't be here
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const [error, nameservers] = await safe(dig.resolve(zoneName, 'NS', { timeout: 5000 }));
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if (error && error.code === 'ENOTFOUND') throw new BoxError(BoxError.BAD_FIELD, 'Unable to resolve nameservers for this domain');
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if (error || !nameservers) throw new BoxError(BoxError.BAD_FIELD, error ? error.message : 'Unable to get nameservers');
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if (!nameservers.every(function (n) { return n.toLowerCase().indexOf('.bunny.net') !== -1; })) {
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debug('verifyDomainConfig: %j does not contain Bunny NS', nameservers);
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throw new BoxError(BoxError.BAD_FIELD, 'Domain nameservers are not set to Bunny');
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}
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const location = 'cloudrontestdns';
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await upsert(domainObject, location, 'A', [ ip ]);
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debug('verifyDomainConfig: Test A record added');
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await del(domainObject, location, 'A', [ ip ]);
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debug('verifyDomainConfig: Test A record removed again');
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return credentials;
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}
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