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keksAccountGUI/node_modulesOLD/default-gateway/win32.js
2019-08-11 20:48:02 +02:00

78 lines
2.2 KiB
JavaScript

"use strict";
const execa = require("execa");
const ipRegex = require("ip-regex");
const os = require("os");
const gwArgs = "path Win32_NetworkAdapterConfiguration where IPEnabled=true get DefaultIPGateway,Index /format:table".split(" ");
const ifArgs = index => `path Win32_NetworkAdapter where Index=${index} get NetConnectionID,MACAddress /format:table`.split(" ");
const spawnOpts = {
windowsHide: true,
};
function parseGwTable(gwTable, family) {
for (const line of (gwTable || "").trim().split("\n").splice(1)) {
const [gw, id] = line.trim().split(/} +/) || [];
const gateway = (ipRegex[family]().exec((gw || "").trim()) || [])[0];
if (gateway) return [gateway, id];
}
}
function parseIfTable(ifTable) {
const line = (ifTable || "").trim().split("\n")[1];
let [mac, name] = line.trim().split(/\s+/);
mac = mac.toLowerCase();
// try to get the interface name by matching the mac to os.networkInterfaces to avoid wmic's encoding issues
// https://github.com/silverwind/default-gateway/issues/14
for (const [osname, addrs] of Object.entries(os.networkInterfaces())) {
for (const addr of addrs) {
if (addr && addr.mac === mac) {
return osname;
}
}
}
return name;
}
const promise = async family => {
const gwTable = await execa.stdout("wmic", gwArgs, spawnOpts);
const [gateway, id] = parseGwTable(gwTable, family) || [];
if (!gateway) {
throw new Error("Unable to determine default gateway");
}
let name;
if (id) {
const ifTable = await execa.stdout("wmic", ifArgs(id), spawnOpts);
name = parseIfTable(ifTable);
}
return {gateway, interface: name ? name : null};
};
const sync = family => {
const gwTable = execa.sync("wmic", gwArgs, spawnOpts).stdout;
const [gateway, id] = parseGwTable(gwTable, family) || [];
if (!gateway) {
throw new Error("Unable to determine default gateway");
}
let name;
if (id) {
const ifTable = execa.sync("wmic", ifArgs(id), spawnOpts).stdout;
name = parseIfTable(ifTable);
}
return {gateway, interface: name ? name : null};
};
module.exports.v4 = () => promise("v4");
module.exports.v6 = () => promise("v6");
module.exports.v4.sync = () => sync("v4");
module.exports.v6.sync = () => sync("v6");