goldilocks.js/lib/ddns/utils.js

103 lines
3.0 KiB
JavaScript

'use strict';
module.exports.create = function (deps, conf) {
async function getSession(id) {
var session = await deps.storage.tokens.get(id);
if (!session) {
throw new Error('no user token with ID "' + id + '"');
}
return session;
}
function iterateAllModules(action, curConf) {
curConf = curConf || conf;
var promises = [];
curConf.domains.forEach(function (dom) {
if (!dom.modules || !Array.isArray(dom.modules.ddns) || !dom.modules.ddns.length) {
return null;
}
// For the time being all of our things should only be tried once (regardless if it succeeded)
// TODO: revisit this behavior when we support multiple ways of setting records, and/or
// if we want to allow later modules to run if early modules fail.
promises.push(dom.modules.ddns.reduce(function (prom, mod) {
if (prom) { return prom; }
return action(mod, dom.names);
}, null));
});
curConf.ddns.modules.forEach(function (mod) {
promises.push(action(mod, mod.domains));
});
return Promise.all(promises.filter(Boolean));
}
var tldCache = {};
async function updateTldCache(provider) {
var reqObj = {
url: deps.OAUTH3.url.normalize(provider) + '/api/com.daplie.domains/prices'
, method: 'GET'
, json: true
};
var resp = await deps.OAUTH3.request(reqObj);
var tldObj = {};
resp.data.forEach(function (tldInfo) {
if (tldInfo.enabled) {
tldObj[tldInfo.tld] = true;
}
});
tldCache[provider] = {
time: Date.now()
, tlds: tldObj
};
return tldObj;
}
async function getTlds(provider) {
// If we've never cached the results we need to return the promise that will fetch the result,
// otherwise we can return the cached value. If the cached value has "expired", we can still
// return the cached value we just want to update the cache in parellel (making sure we only
// update once).
if (!tldCache[provider]) {
tldCache[provider] = {
updating: true
, tlds: updateTldCache(provider)
};
}
if (!tldCache[provider].updating && Date.now() - tldCache[provider].time > 24 * 60 * 60 * 1000) {
tldCache[provider].updating = true;
updateTldCache(provider);
}
return tldCache[provider].tlds;
}
async function splitDomains(provider, domains) {
var tlds = await getTlds(provider);
return domains.map(function (domain) {
var split = domain.split('.');
var tldSegCnt = tlds[split.slice(-2).join('.')] ? 2 : 1;
// Currently assuming that the sld can't contain dots, and that the tld can have at
// most one dot. Not 100% sure this is a valid assumption, but exceptions should be
// rare even if the assumption isn't valid.
return {
tld: split.slice(-tldSegCnt).join('.')
, sld: split.slice(-tldSegCnt - 1, -tldSegCnt).join('.')
, sub: split.slice(0, -tldSegCnt - 1).join('.')
};
});
}
return {
getSession
, iterateAllModules
, getTlds
, splitDomains
};
};