walnut.js/lib/ip-checker.js

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2016-04-09 23:14:00 +00:00
"use strict";
var PromiseA = require('bluebird').Promise;
var ifaces = require('os').networkInterfaces();
var dns = PromiseA.promisifyAll(require('dns'));
var https = require('https');
function getExternalAddresses() {
var iftypes = {};
var ipv4check = 'api.ipify.org';
var ipv6check = 'myexternalip.com';
Object.keys(ifaces).forEach(function (ifname) {
ifaces[ifname].forEach(function (iface) {
// local addresses
if (iface.internal) {
return;
}
// auto address space
if (/^(fe80:|169\.)/.test(iface.address)) {
return;
}
/*
if (/^(fe80:|10\.|192\.168|172\.1[6-9]|172\.2[0-9]|172\.3[0-1])/.test(iface.address)) {
return;
}
*/
iftypes[iface.family] = true;
});
});
console.log(iftypes);
var now = Date.now();
return PromiseA.all([
dns.lookupAsync(ipv4check, { family: 4/*, all: true*/ }).then(function (ans) {
iftypes.IPv4 = { address: ans[0], family: ans[1], time: Date.now() - now };
}).error(function () {
//console.log('no ipv4', Date.now() - now);
iftypes.IPv4 = false;
})
// curl -6 https://myexternalip.com/raw
, dns.lookupAsync(ipv6check, { family: 6/*, all: true*/ }).then(function (ans) {
iftypes.IPv6 = { address: ans[0], family: ans[1], time: Date.now() - now };
}).error(function (err) {
console.error('Error ip-checker.js');
console.error(err.stack || err);
//console.log('no ipv6', Date.now() - now);
iftypes.IPv6 = false;
})
]).then(function () {
var requests = [];
if (iftypes.IPv4) {
requests.push(new PromiseA(function (resolve) {
var req = https.request({
method: 'GET'
, hostname: iftypes.IPv4.address
, port: 443
, headers: {
Host: ipv4check
}
, path: '/'
//, family: 4
// TODO , localAddress: <<external_ipv4>>
}, function (res) {
var result = '';
res.on('error', function (/*err*/) {
resolve(null);
});
res.on('data', function (chunk) {
result += chunk.toString('utf8');
});
res.on('end', function () {
resolve({ address: result, family: 4/*, wan: result === iftypes.IPv4.localAddress*/, time: iftypes.IPv4.time });
});
});
req.on('error', function () {
resolve(null);
});
req.end();
}));
}
if (iftypes.IPv6) {
requests.push(new PromiseA(function (resolve) {
var req = https.request({
method: 'GET'
, hostname: iftypes.IPv6.address
, port: 443
, headers: {
Host: ipv6check
}
, path: '/raw'
//, family: 6
// TODO , localAddress: <<external_ipv6>>
}, function (res) {
var result = '';
res.on('error', function (/*err*/) {
resolve(null);
});
res.on('data', function (chunk) {
result += chunk.toString('utf8').trim();
});
res.on('end', function () {
resolve({ address: result, family: 6/*, wan: result === iftypes.IPv6.localAaddress*/, time: iftypes.IPv4.time });
});
});
req.on('error', function () {
resolve(null);
});
req.end();
}));
}
return PromiseA.all(requests).then(function (ips) {
ips = ips.filter(function (ip) {
return ip;
});
return {
addresses: ips
, time: Date.now() - now
};
});
});
}
exports.getExternalAddresses = getExternalAddresses;