goldilocks.js/lib/ddns.js

169 lines
5.5 KiB
JavaScript

'use strict';
module.exports.create = function (deps, conf) {
var PromiseA = deps.PromiseA;
var request = PromiseA.promisify(require('request'));
var OAUTH3 = require('../packages/assets/org.oauth3');
require('../packages/assets/org.oauth3/oauth3.dns.js');
OAUTH3._hooks = require('../packages/assets/org.oauth3/oauth3.node.storage.js');
function dnsType(addr) {
if (/^\d+\.\d+\.\d+\.\d+$/.test(addr)) {
return 'A';
}
if (-1 !== addr.indexOf(':') && /^[a-f:\.\d]+$/i.test(addr)) {
return 'AAAA';
}
}
function setDeviceAddress(addr) {
return deps.storage.owners.all().then(function (sessions) {
return sessions.filter(function (sess) {
return sess.token.scp.indexOf('dns') >= 0;
})[0];
}).then(function (session) {
if (!session) {
return PromiseA.reject(new Error('no sessions with DNS grants'));
}
// The OAUTH3 library stores some things on the root session object that we usually
// just leave inside the token, but we need to pull those out before we use it here
session.provider_uri = session.provider_uri || session.token.provider_uri || session.token.iss;
session.client_uri = session.client_uri || session.token.azp;
session.scope = session.scope || session.token.scp;
return OAUTH3.discover(session.token.aud).then(function (directives) {
return request({
url: directives.api+'/api/com.daplie.domains/acl/devices/' + conf.device.hostname
, method: 'POST'
, headers: {
'Authorization': 'Bearer ' + session.refresh_token
, 'Accept': 'application/json; charset=utf-8'
}
, json: {
addresses: [
{ value: addr, type: dnsType(addr) }
]
}
}).then(function () {
return OAUTH3.api(directives.api, {session: session, api: 'dns.list'}).then(function (list) {
return list.filter(function (record) {
return record.device === conf.device.hostname;
}).map(function (record) {
var split = record.zone.split('.');
return {
tld: split.slice(1).join('.')
, sld: split[0]
, sub: record.host.slice(0, -(record.zone.length + 1))
};
});
});
}).then(function (domains) {
var common = {
api: 'devices.detach'
, session: session
, device: conf.device.hostname
};
return PromiseA.all(domains.map(function (record) {
return OAUTH3.api(directives.api, Object.assign({}, common, record));
})).then(function () {
return domains;
});
}).then(function (domains) {
var common = {
api: 'devices.attach'
, session: session
, device: conf.device.hostname
, ip: addr
, ttl: 300
};
return PromiseA.all(domains.map(function (record) {
return OAUTH3.api(directives.api, Object.assign({}, common, record));
}));
});
});
});
}
function getDeviceAddresses() {
return deps.storage.owners.all().then(function (sessions) {
return sessions.filter(function (sess) {
return sess.token.scp.indexOf('dns') >= 0;
})[0];
}).then(function (session) {
if (!session) {
return PromiseA.reject(new Error('no sessions with DNS grants'));
}
return OAUTH3.discover(session.token.aud).then(function (directives) {
return request({
url: directives.api+'/api/org.oauth3.dns/acl/devices'
, method: 'GET'
, headers: {
'Authorization': 'Bearer ' + session.refresh_token
, 'Accept': 'application/json; charset=utf-8'
}
, json: true
});
}).then(function (result) {
if (!result.body) {
return PromiseA.reject(new Error('No response body in request for device addresses'));
}
if (result.body.error) {
var err = new Error(result.body.error.message);
return PromiseA.reject(Object.assign(err, result.body.error));
}
return result.body.devices.filter(function (dev) {
return dev.name === conf.device.hostname;
})[0];
}).then(function (dev) {
return (dev || {}).addresses || [];
});
});
}
var publicAddress;
function recheckPubAddr() {
if (!conf.ddns.enabled) {
return;
}
deps.storage.owners.all().then(function (sessions) {
return sessions.filter(function (sess) {
return sess.token.scp.indexOf('dns') >= 0;
})[0];
}).then(function (session) {
if (!session) {
return;
}
OAUTH3.discover(session.token.aud).then(function (directives) {
return deps.loopback.checkPublicAddr(directives.api);
}).then(function (addr) {
if (publicAddress !== addr) {
if (conf.debug) {
console.log('previous public address',publicAddress, 'does not match current public address', addr);
}
publicAddress = addr;
setDeviceAddress(addr);
}
}, function (err) {
if (conf.debug) {
console.error('error getting public address', err);
}
});
});
}
recheckPubAddr();
setInterval(recheckPubAddr, 5*60*1000);
return {
setDeviceAddress: setDeviceAddress
, getDeviceAddresses: getDeviceAddresses
, recheckPubAddr: recheckPubAddr
};
};