tenebrous-dicebot/api/node_modules/internal-ip/index.js

52 lines
1.3 KiB
JavaScript

'use strict';
const os = require('os');
const defaultGateway = require('default-gateway');
const ipaddr = require('ipaddr.js');
function findIp(gateway) {
const interfaces = os.networkInterfaces();
const gatewayIp = ipaddr.parse(gateway);
let ip;
// Look for the matching interface in all local interfaces
Object.keys(interfaces).some(name => {
return interfaces[name].some(addr => {
const prefix = ipaddr.parse(addr.netmask).prefixLengthFromSubnetMask();
const net = ipaddr.parseCIDR(`${addr.address}/${prefix}`);
if (net[0] && net[0].kind() === gatewayIp.kind() && gatewayIp.match(net)) {
ip = net[0].toString();
}
return Boolean(ip);
});
});
return ip;
}
function promise(family) {
return defaultGateway[family]().then(result => {
return findIp(result.gateway) || null;
}).catch(() => null);
}
function sync(family) {
try {
const result = defaultGateway[family].sync();
return findIp(result.gateway) || null;
} catch (error) {
return null;
}
}
const internalIp = {};
internalIp.v6 = () => promise('v6');
internalIp.v4 = () => promise('v4');
internalIp.v6.sync = () => sync('v6');
internalIp.v4.sync = () => sync('v4');
module.exports = internalIp;
// TODO: Remove this for the next major release
module.exports.default = internalIp;