108 lines
2.8 KiB
JavaScript
108 lines
2.8 KiB
JavaScript
'use strict';
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var PromiseA = require('bluebird');
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module.exports.match = function (servername, opts) {
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return PromiseA.promisify(require('ipify'))().then(function (ip) {
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var dns = PromiseA.promisifyAll(require('dns'));
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opts.externalIps = [ { address: ip, family: 'IPv4' } ];
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opts.ifaces = require('./local-ip.js').find({ externals: opts.externalIps });
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opts.externalIfaces = Object.keys(opts.ifaces).reduce(function (all, iname) {
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var iface = opts.ifaces[iname];
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iface.ipv4.forEach(function (addr) {
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if (addr.external) {
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addr.iface = iname;
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all.push(addr);
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}
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});
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iface.ipv6.forEach(function (addr) {
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if (addr.external) {
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addr.iface = iname;
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all.push(addr);
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}
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});
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return all;
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}, []).filter(Boolean);
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function resolveIps(hostname) {
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var allIps = [];
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return PromiseA.all([
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dns.resolve4Async(hostname).then(function (records) {
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records.forEach(function (ip) {
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allIps.push({
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address: ip
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, family: 'IPv4'
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});
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});
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}, function () {})
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, dns.resolve6Async(hostname).then(function (records) {
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records.forEach(function (ip) {
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allIps.push({
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address: ip
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, family: 'IPv6'
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});
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});
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}, function () {})
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]).then(function () {
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return allIps;
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});
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}
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function resolveIpsAndCnames(hostname) {
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return PromiseA.all([
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resolveIps(hostname)
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, dns.resolveCnameAsync(hostname).then(function (records) {
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return PromiseA.all(records.map(function (hostname) {
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return resolveIps(hostname);
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})).then(function (allIps) {
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return allIps.reduce(function (all, ips) {
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return all.concat(ips);
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}, []);
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});
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}, function () {
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return [];
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})
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]).then(function (ips) {
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return ips.reduce(function (all, set) {
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return all.concat(set);
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}, []);
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});
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}
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return resolveIpsAndCnames(servername).then(function (allIps) {
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var matchingIps = [];
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if (!allIps.length) {
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console.warn("Could not resolve '" + servername + "'");
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}
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// { address, family }
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allIps.some(function (ip) {
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function match(addr) {
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if (ip.address === addr.address) {
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matchingIps.push(addr);
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}
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}
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opts.externalIps.forEach(match);
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// opts.externalIfaces.forEach(match);
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Object.keys(opts.ifaces).forEach(function (iname) {
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var iface = opts.ifaces[iname];
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iface.ipv4.forEach(match);
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iface.ipv6.forEach(match);
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});
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return matchingIps.length;
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});
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return matchingIps;
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});
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});
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};
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