�PNG  IHDR��;���IDATx��ܻn�0���K�� �)(�pA��� ���7�LeG{�� �§㻢|��ذaÆ 6lذaÆ 6lذaÆ 6lom��$^�y���ذag�5bÆ 6lذaÆ 6lذa{���� 6lذaÆ �`����}H�Fkm�,�m����Ӫ���ô�ô!� �x�|'ܢ˟;�E:���9�&ᶒ�}�{�v]�n&�6� �h��_��t�ڠ͵-ҫ���Z;��Z$�.�P���k�ž)�!��o���>}l�eQfJ�T��u і���چ��\��X=8��Rن4`Vw�l�>����n�G�^��i�s��"ms�$�u��i��?w�bs[m�6�K4���O���.�4��%����/����b�C%��t ��M�ז� �-l�G6�mrz2���s�%�9��s@���-�k�9�=���)������k�B5����\��+͂�Zsٲ ��Rn��~G���R���C����� �wIcI��n7jJ���hۛNCS|���j0��8y�iHKֶۛ�k�Ɉ+;Sz������L/��F�*\��Ԕ�#"5��m�2��[S��������=�g��n�a�P�e�ғ�L�� lذaÆ 6l�^k��̱aÆ 6lذaÆ 6lذa;���� �_��ذaÆ 6lذaÆ 6lذaÆ ���R���IEND�B` "use strict"; const {isIP} = require("net"); const {networkInterfaces} = require("os"); const execa = require("execa"); const gwArgs = "path Win32_NetworkAdapterConfiguration where IPEnabled=true get DefaultIPGateway,GatewayCostMetric,IPConnectionMetric,Index /format:table".split(" "); const ifArgs = index => `path Win32_NetworkAdapter where Index=${index} get NetConnectionID,MACAddress /format:table`.split(" "); const spawnOpts = { windowsHide: true, }; // Parsing tables like this. The final metric is GatewayCostMetric + IPConnectionMetric // // DefaultIPGateway GatewayCostMetric Index IPConnectionMetric // {"1.2.3.4", "2001:db8::1"} {0, 256} 12 25 // {"2.3.4.5"} {25} 12 55 function parseGwTable(gwTable, family) { let [bestGw, bestMetric, bestId] = [null, null, null]; for (let line of (gwTable || "").trim().split(/\r?\n/).splice(1)) { line = line.trim(); const [_, gwArr, gwCostsArr, id, ipMetric] = /({.+?}) +?({.+?}) +?([0-9]+) +?([0-9]+)/g.exec(line) || []; if (!gwArr) continue; const gateways = (gwArr.match(/"(.+?)"/g) || []).map(match => match.substring(1, match.length - 1)); const gatewayCosts = (gwCostsArr.match(/[0-9]+/g) || []); for (const [index, gateway] of Object.entries(gateways)) { if (!gateway || `v${isIP(gateway)}` !== family) continue; const metric = parseInt(gatewayCosts[index]) + parseInt(ipMetric); if (!bestGw || metric < bestMetric) { [bestGw, bestMetric, bestId] = [gateway, metric, id]; } } } if (bestGw) return [bestGw, bestId]; } 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(networkInterfaces())) { for (const addr of addrs) { if (addr && addr.mac && addr.mac.toLowerCase() === mac) { return osname; } } } return name; } const promise = async family => { const {stdout} = await execa("wmic", gwArgs, spawnOpts); const [gateway, id] = parseGwTable(stdout, family) || []; if (!gateway) { throw new Error("Unable to determine default gateway"); } let name; if (id) { const {stdout} = await execa("wmic", ifArgs(id), spawnOpts); name = parseIfTable(stdout); } return {gateway, interface: name ? name : null}; }; const sync = family => { const {stdout} = execa.sync("wmic", gwArgs, spawnOpts); const [gateway, id] = parseGwTable(stdout, family) || []; if (!gateway) { throw new Error("Unable to determine default gateway"); } let name; if (id) { const {stdout} = execa.sync("wmic", ifArgs(id), spawnOpts); name = parseIfTable(stdout); } 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");