68 lines
1.7 KiB
JavaScript
Executable file
68 lines
1.7 KiB
JavaScript
Executable file
"use strict";
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const execa = require("execa");
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const ipRegex = require("ip-regex");
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const gwArgs = "path Win32_NetworkAdapterConfiguration where IPEnabled=true get DefaultIPGateway,Index /format:table".split(" ");
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const ifArgs = "path Win32_NetworkAdapter get Index,NetConnectionID /format:table".split(" ");
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const parse = (gwTable, ifTable, family) => {
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let gateway, gwid, result;
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(gwTable || "").trim().split("\n").splice(1).some(line => {
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const results = line.trim().split(/} +/) || [];
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const gw = results[0];
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const id = results[1];
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gateway = (ipRegex[family]().exec((gw || "").trim()) || [])[0];
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if (gateway) {
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gwid = id;
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return true;
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}
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});
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(ifTable || "").trim().split("\n").splice(1).some(line => {
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const i = line.indexOf(" ");
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const id = line.substr(0, i).trim();
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const name = line.substr(i + 1).trim();
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if (id === gwid) {
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result = {gateway, interface: name ? name : null};
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return true;
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}
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});
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if (!result) {
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throw new Error("Unable to determine default gateway");
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}
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return result;
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};
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const spawnOpts = {
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windowsHide: true,
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};
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const promise = family => {
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return Promise.all([
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execa.stdout("wmic", gwArgs, spawnOpts),
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execa.stdout("wmic", ifArgs, spawnOpts),
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]).then(results => {
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const gwTable = results[0];
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const ifTable = results[1];
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return parse(gwTable, ifTable, family);
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});
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};
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const sync = family => {
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const gwTable = execa.sync("wmic", gwArgs, spawnOpts).stdout;
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const ifTable = execa.sync("wmic", ifArgs, spawnOpts).stdout;
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return parse(gwTable, ifTable, family);
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};
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module.exports.v4 = () => promise("v4");
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module.exports.v6 = () => promise("v6");
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module.exports.v4.sync = () => sync("v4");
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module.exports.v6.sync = () => sync("v6");
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