239 lines
9.5 KiB
JavaScript
239 lines
9.5 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('node: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/hetznercloud'),
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dig = require('../dig.js'),
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dns = require('../dns.js'),
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promiseRetry = require('../promise-retry.js'),
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safe = require('safetydance'),
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superagent = require('@cloudron/superagent'),
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waitForDns = require('./waitfordns.js');
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// https://docs.hetzner.cloud/reference/cloud
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const ENDPOINT = 'https://api.hetzner.cloud/v1';
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function formatError(response) {
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return `Hetzner DNS error ${response.status} ${response.text}`;
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}
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function removePrivateFields(domainObject) {
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delete domainObject.config.token;
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return domainObject;
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}
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function injectPrivateFields(newConfig, currentConfig) {
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if (!Object.hasOwn(newConfig, 'token')) newConfig.token = currentConfig.token;
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}
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async function getZone(domainConfig, zoneName) {
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assert.strictEqual(typeof domainConfig, 'object');
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assert.strictEqual(typeof zoneName, 'string');
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const [error, response] = await safe(superagent.get(`${ENDPOINT}/zones`)
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.set('Authorization', `Bearer ${domainConfig.token}`)
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.query({ search_name: zoneName })
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.timeout(30 * 1000)
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.retry(5)
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.ok(() => true));
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if (error) throw new BoxError(BoxError.NETWORK_ERROR, error);
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if (response.status === 401 || response.status === 403) throw new BoxError(BoxError.ACCESS_DENIED, formatError(response));
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if (response.status !== 200) throw new BoxError(BoxError.EXTERNAL_ERROR, formatError(response));
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if (!Array.isArray(response.body.zones)) throw new BoxError(BoxError.EXTERNAL_ERROR, formatError(response));
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const zone = response.body.zones.find(z => z.name === zoneName);
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if (!zone) throw new BoxError(BoxError.NOT_FOUND, formatError(response));
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return zone;
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}
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async function getRecords(domainConfig, zone, name, type) {
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assert.strictEqual(typeof domainConfig, 'object');
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assert.strictEqual(typeof zone, 'object');
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assert.strictEqual(typeof name, 'string');
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assert.strictEqual(typeof type, 'string');
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debug(`getRecords: getting dns records of ${zone.name} with ${name} and type ${type}`);
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const [error, response] = await safe(superagent.get(`${ENDPOINT}/zones/${zone.id}/rrsets/${name}/${type.toUpperCase()}`)
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.set('Authorization', `Bearer ${domainConfig.token}`)
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.timeout(30 * 1000)
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.retry(5)
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.ok(() => true));
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if (error) throw new BoxError(BoxError.NETWORK_ERROR, error);
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if (response.status === 404) return [];
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if (response.status === 401 || response.status === 403) throw new BoxError(BoxError.ACCESS_DENIED, formatError(response));
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if (response.status !== 200) throw new BoxError(BoxError.EXTERNAL_ERROR, formatError(response));
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return response.body.rrset.records;
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}
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async function waitForAction(domainConfig, id) {
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assert.strictEqual(typeof domainConfig, 'object');
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assert.strictEqual(typeof id, 'number');
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await promiseRetry({ times: 100, interval: 1000, debug }, async () => {
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const [error, response] = await safe(superagent.get(`${ENDPOINT}/actions/${id}`)
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.set('Authorization', `Bearer ${domainConfig.token}`)
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.timeout(30 * 1000)
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.retry(5)
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.ok(() => true));
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if (error) throw new BoxError(BoxError.NETWORK_ERROR, error);
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if (response.status === 404) return [];
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if (response.status === 401 || response.status === 403) throw new BoxError(BoxError.ACCESS_DENIED, formatError(response));
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if (response.status !== 200) throw new BoxError(BoxError.EXTERNAL_ERROR, formatError(response));
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if (response.body.action.status !== 'success') throw new BoxError(BoxError.TRY_AGAIN, 'action not done yet');
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});
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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} for zone ${zoneName} of type ${type} with values ${JSON.stringify(values)}`);
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const zone = await getZone(domainConfig, zoneName);
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const records = await getRecords(domainConfig, zone, name, type);
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// update means first delete then recreate
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if (records.length) await del(domainObject, location, type, values);
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const data = {
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name,
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type,
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ttl: 60,
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records: values.map(v => { return { value: v, comment: 'managed by cloudron' }; }),
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labels: {
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managedBy: 'cloudron'
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}
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};
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const [error, response] = await safe(superagent.post(`${ENDPOINT}/zones/${zone.id}/rrsets`)
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.set('Authorization', `Bearer ${domainConfig.token}`)
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.send(data)
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.timeout(30 * 1000)
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.retry(5)
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.ok(() => true));
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if (error) throw new BoxError(BoxError.NETWORK_ERROR, error);
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if (response.status === 403 || response.status === 401) throw new BoxError(BoxError.ACCESS_DENIED, formatError(response));
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if (response.status === 422) throw new BoxError(BoxError.BAD_FIELD, response.body.message);
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if (response.status !== 201) throw new BoxError(BoxError.EXTERNAL_ERROR, formatError(response));
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await waitForAction(domainConfig, response.body.action.id);
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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 zone = await getZone(domainConfig, zoneName);
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const result = await getRecords(domainConfig, zone, name, type);
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return result.map(function (record) { return record.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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const zone = await getZone(domainConfig, zoneName);
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const records = await getRecords(domainConfig, zone, name, type);
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if (records.length === 0) return;
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const [error, response] = await safe(superagent.del(`${ENDPOINT}/zones/${zone.id}/rrsets/${name}/${type}`)
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.set('Authorization', `Bearer ${domainConfig.token}`)
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.timeout(30 * 1000)
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.retry(5)
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.ok(() => true));
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if (error) throw new BoxError(BoxError.NETWORK_ERROR, error);
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if (response.status === 404) return;
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if (response.status === 403 || response.status === 401) throw new BoxError(BoxError.ACCESS_DENIED, formatError(response));
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if (response.status !== 201) throw new BoxError(BoxError.EXTERNAL_ERROR, formatError(response));
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await waitForAction(domainConfig, response.body.action.id);
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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.token || typeof domainConfig.token !== 'string') throw new BoxError(BoxError.BAD_FIELD, 'token must be a non-empty string');
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if ('customNameservers' in domainConfig && typeof domainConfig.customNameservers !== 'boolean') throw new BoxError(BoxError.BAD_FIELD, 'customNameservers must be a boolean');
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const ip = '127.0.0.1';
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const credentials = {
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token: domainConfig.token,
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customNameservers: !!domainConfig.customNameservers
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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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// https://docs.hetzner.com/dns-console/dns/general/dns-overview#the-hetzner-online-name-servers-are
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if (!nameservers.every(function (n) { return n.toLowerCase().search(/hetzner|your-server|second-ns/) !== -1; })) {
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debug('verifyDomainConfig: %j does not contain Hetzner NS', nameservers);
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if (!domainConfig.customNameservers) throw new BoxError(BoxError.BAD_FIELD, 'Domain nameservers are not set to Hetzner');
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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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