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Edit File: wifi.js

'use strict';
// @ts-check
// ==================================================================================
// wifi.js
// ----------------------------------------------------------------------------------
// Description:   System Information - library
//                for Node.js
// Copyright:     (c) 2014 - 2024
// Author:        Sebastian Hildebrandt
// ----------------------------------------------------------------------------------
// License:       MIT
// ==================================================================================
// 9. wifi
// ----------------------------------------------------------------------------------

const os = require('os');
const exec = require('child_process').exec;
const execSync = require('child_process').execSync;
const util = require('./util');

let _platform = process.platform;

const _linux = (_platform === 'linux' || _platform === 'android');
const _darwin = (_platform === 'darwin');
const _windows = (_platform === 'win32');

function wifiDBFromQuality(quality) {
  const qual = parseFloat(quality);
  if (qual < 0) { return 0; }
  if (qual >= 100) { return -50; }
  return (qual / 2 - 100);
}

function wifiQualityFromDB(db) {
  const result = 2 * (parseFloat(db) + 100);
  return result <= 100 ? result : 100;
}

const _wifi_frequencies = {
  1: 2412,
  2: 2417,
  3: 2422,
  4: 2427,
  5: 2432,
  6: 2437,
  7: 2442,
  8: 2447,
  9: 2452,
  10: 2457,
  11: 2462,
  12: 2467,
  13: 2472,
  14: 2484,
  32: 5160,
  34: 5170,
  36: 5180,
  38: 5190,
  40: 5200,
  42: 5210,
  44: 5220,
  46: 5230,
  48: 5240,
  50: 5250,
  52: 5260,
  54: 5270,
  56: 5280,
  58: 5290,
  60: 5300,
  62: 5310,
  64: 5320,
  68: 5340,
  96: 5480,
  100: 5500,
  102: 5510,
  104: 5520,
  106: 5530,
  108: 5540,
  110: 5550,
  112: 5560,
  114: 5570,
  116: 5580,
  118: 5590,
  120: 5600,
  122: 5610,
  124: 5620,
  126: 5630,
  128: 5640,
  132: 5660,
  134: 5670,
  136: 5680,
  138: 5690,
  140: 5700,
  142: 5710,
  144: 5720,
  149: 5745,
  151: 5755,
  153: 5765,
  155: 5775,
  157: 5785,
  159: 5795,
  161: 5805,
  165: 5825,
  169: 5845,
  173: 5865,
  183: 4915,
  184: 4920,
  185: 4925,
  187: 4935,
  188: 4940,
  189: 4945,
  192: 4960,
  196: 4980
};

function wifiFrequencyFromChannel(channel) {
  return {}.hasOwnProperty.call(_wifi_frequencies, channel) ? _wifi_frequencies[channel] : null;
}

function getWifiNetworkListIw(iface) {
  const result = [];
  try {
    let iwlistParts = execSync(`export LC_ALL=C; iwlist ${iface} scan 2>&1; unset LC_ALL`).toString().split('        Cell ');
    if (iwlistParts[0].indexOf('resource busy') >= 0) { return -1; }
    if (iwlistParts.length > 1) {
      iwlistParts.shift();
      iwlistParts.forEach(element => {
        const lines = element.split('\n');
        const channel = util.getValue(lines, 'channel', ':', true);
        const address = (lines && lines.length && lines[0].indexOf('Address:') >= 0 ? lines[0].split('Address:')[1].trim().toLowerCase() : '');
        const mode = util.getValue(lines, 'mode', ':', true);
        const frequency = util.getValue(lines, 'frequency', ':', true);
        const qualityString = util.getValue(lines, 'Quality', '=', true);
        const dbParts = qualityString.toLowerCase().split('signal level=');
        const db = dbParts.length > 1 ? util.toInt(dbParts[1]) : 0;
        const quality = db ? wifiQualityFromDB(db) : 0;
        const ssid = util.getValue(lines, 'essid', ':', true);

// security and wpa-flags
        const isWpa = element.indexOf(' WPA ') >= 0;
        const isWpa2 = element.indexOf('WPA2 ') >= 0;
        const security = [];
        if (isWpa) { security.push('WPA'); }
        if (isWpa2) { security.push('WPA2'); }
        const wpaFlags = [];
        let wpaFlag = '';
        lines.forEach(function (line) {
          const l = line.trim().toLowerCase();
          if (l.indexOf('group cipher') >= 0) {
            if (wpaFlag) {
              wpaFlags.push(wpaFlag);
            }
            const parts = l.split(':');
            if (parts.length > 1) {
              wpaFlag = parts[1].trim().toUpperCase();
            }
          }
          if (l.indexOf('pairwise cipher') >= 0) {
            const parts = l.split(':');
            if (parts.length > 1) {
              if (parts[1].indexOf('tkip')) { wpaFlag = (wpaFlag ? 'TKIP/' + wpaFlag : 'TKIP'); }
              else if (parts[1].indexOf('ccmp')) { wpaFlag = (wpaFlag ? 'CCMP/' + wpaFlag : 'CCMP'); }
              else if (parts[1].indexOf('proprietary')) { wpaFlag = (wpaFlag ? 'PROP/' + wpaFlag : 'PROP'); }
            }
          }
          if (l.indexOf('authentication suites') >= 0) {
            const parts = l.split(':');
            if (parts.length > 1) {
              if (parts[1].indexOf('802.1x')) { wpaFlag = (wpaFlag ? '802.1x/' + wpaFlag : '802.1x'); }
              else if (parts[1].indexOf('psk')) { wpaFlag = (wpaFlag ? 'PSK/' + wpaFlag : 'PSK'); }
            }
          }
        });
        if (wpaFlag) {
          wpaFlags.push(wpaFlag);
        }

result.push({
          ssid,
          bssid: address,
          mode,
          channel: channel ? util.toInt(channel) : null,
          frequency: frequency ? util.toInt(frequency.replace('.', '')) : null,
          signalLevel: db,
          quality,
          security,
          wpaFlags,
          rsnFlags: []
        });
      });
    }
    return result;
  } catch (e) {
    return -1;
  }
}

for (let i = 0; i <= l; i++) {
                if (s[i] !== undefined) {
                  ifaceSanitized = ifaceSanitized + s[i];
                }
              }

ssidParts.forEach(ssidPart => {
            const ssidLines = ssidPart.split(os.EOL);
            if (ssidLines && ssidLines.length >= 8 && ssidLines[0].indexOf(':') >= 0) {
              const bssidsParts = ssidPart.split(' BSSID');
              bssidsParts.shift();

bssidsParts.forEach((bssidPart) => {
                const bssidLines = bssidPart.split(os.EOL);
                const bssidLine = bssidLines[0].split(':');
                bssidLine.shift();
                const bssid = bssidLine.join(':').trim().toLowerCase();
                const channel = bssidLines[3].split(':').pop().trim();
                const quality = bssidLines[1].split(':').pop().trim();

result.push({
                  ssid: ssidLines[0].split(':').pop().trim(),
                  bssid,
                  mode: '',
                  channel: channel ? parseInt(channel, 10) : null,
                  frequency: wifiFrequencyFromChannel(channel),
                  signalLevel: wifiDBFromQuality(quality),
                  quality: quality ? parseInt(quality, 10) : null,
                  security: [ssidLines[2].split(':').pop().trim()],
                  wpaFlags: [ssidLines[3].split(':').pop().trim()],
                  rsnFlags: []
                });
              });
            }
          });

if (callback) {
            callback(result);
          }
          resolve(result);
        });
      } else {
        if (callback) {
          callback(result);
        }
        resolve(result);
      }
    });
  });
}

exports.wifiNetworks = wifiNetworks;

function formatBssid(s) {
  s = s.replace(/</g, '').replace(/>/g, '').match(/.{1,2}/g) || [];
  return s.join(':');
}

function wifiConnections(callback) {

return new Promise((resolve) => {
    process.nextTick(() => {
      const result = [];

if (_linux) {
        const ifaces = ifaceListLinux();
        const networkList = getWifiNetworkListNmi();
        ifaces.forEach(ifaceDetail => {
          let ifaceSanitized = '';
          const s = util.isPrototypePolluted() ? '---' : util.sanitizeShellString(ifaceDetail.iface, true);
          const ll = util.mathMin(s.length, 2000);

for (let i = 0; i <= ll; i++) {
            if (s[i] !== undefined) {
              ifaceSanitized = ifaceSanitized + s[i];
            }
          }

const nmiDetails = nmiDeviceLinux(ifaceSanitized);
          const wpaDetails = wpaConnectionLinux(ifaceSanitized);
          const ssid = nmiDetails.ssid || wpaDetails.ssid;
          const network = networkList.filter(nw => nw.ssid === ssid);
          let ssidSanitized = '';
          const t = util.isPrototypePolluted() ? '---' : util.sanitizeShellString(ssid, true);
          const l = util.mathMin(t.length, 2000);
          for (let i = 0; i <= l; i++) {
            if (t[i] !== undefined) {
              ssidSanitized = ssidSanitized + t[i];
            }
          }

exports.wifiConnections = wifiConnections;

function wifiInterfaces(callback) {

return new Promise((resolve) => {
    process.nextTick(() => {
      const result = [];

if (_linux) {
        const ifaces = ifaceListLinux();
        ifaces.forEach(ifaceDetail => {
          const nmiDetails = nmiDeviceLinux(ifaceDetail.iface);
          result.push({
            id: ifaceDetail.id,
            iface: ifaceDetail.iface,
            model: nmiDetails.product ? nmiDetails.product : null,
            vendor: nmiDetails.vendor ? nmiDetails.vendor : null,
            mac: ifaceDetail.mac,
          });
        });
        if (callback) {
          callback(result);
        }
        resolve(result);
      } else if (_darwin) {
        let cmd = 'system_profiler SPNetworkDataType';
        exec(cmd, function (error, stdout) {
          const parts1 = stdout.toString().split('\n\n    Wi-Fi:\n\n');
          if (parts1.length > 1) {
            const lines = parts1[1].split('\n\n')[0].split('\n');
            const iface = util.getValue(lines, 'BSD Device Name', ':', true);
            const mac = util.getValue(lines, 'MAC Address', ':', true);
            const model = util.getValue(lines, 'hardware', ':', true);
            result.push({
              id: 'Wi-Fi',
              iface,
              model,
              vendor: '',
              mac
            });
          }
          if (callback) {
            callback(result);
          }
          resolve(result);
        });
      } else if (_windows) {
        let cmd = 'netsh wlan show interfaces';
        util.powerShell(cmd).then(function (stdout) {
          const allLines = stdout.toString().split('\r\n');
          for (let i = 0; i < allLines.length; i++) {
            allLines[i] = allLines[i].trim();
          }
          const parts = allLines.join('\r\n').split(':\r\n\r\n');
          parts.shift();
          parts.forEach(part => {
            const lines = part.split('\r\n');
            if (lines.length >= 5) {
              const iface = lines[0].indexOf(':') >= 0 ? lines[0].split(':')[1].trim() : '';
              const model = lines[1].indexOf(':') >= 0 ? lines[1].split(':')[1].trim() : '';
              const id = lines[2].indexOf(':') >= 0 ? lines[2].split(':')[1].trim() : '';
              const macParts = lines[3].indexOf(':') >= 0 ? lines[3].split(':') : [];
              macParts.shift();
              const mac = macParts.join(':').trim();
              const vendor = getVendor(model);
              if (iface && model && id && mac) {
                result.push({
                  id,
                  iface,
                  model,
                  vendor,
                  mac,
                });
              }
            }
          });
          if (callback) {
            callback(result);
          }
          resolve(result);
        });
      } else {
        if (callback) {
          callback(result);
        }
        resolve(result);
      }
    });
  });
}

exports.wifiInterfaces = wifiInterfaces;

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