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✏️ Editing: wifi.js

'use strict';
// @ts-check
// ==================================================================================
// wifi.js
// ----------------------------------------------------------------------------------
// Description:   System Information - library
//                for Node.js
// Copyright:     (c) 2014 - 2021
// 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');
const _darwin = (_platform === 'darwin');
const _windows = (_platform === 'win32');

function wifiDBFromQuality(quality) {
  return (parseFloat(quality) / 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();
      for (let i = 0; i < iwlistParts.length; i++) {
        const lines = iwlistParts[i].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 = iwlistParts[i].indexOf(' WPA ') >= 0;
        const isWpa2 = iwlistParts[i].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;
  }
}

function wifiNetworks(callback) {

return new Promise((resolve) => {
    process.nextTick(() => {
      let result = [];
      if (_linux) {
        result = getWifiNetworkListNmi();
        if (result.length === 0) {
          try {
            const iwconfigParts = execSync('export LC_ALL=C; iwconfig 2>/dev/null; unset LC_ALL').toString().split('\n\n');
            let iface = '';
            for (let i = 0; i < iwconfigParts.length; i++) {
              if (iwconfigParts[i].indexOf('no wireless') === -1 && iwconfigParts[i].trim() !== '') {
                iface = iwconfigParts[i].split(' ')[0];
              }
            }
            if (iface) {
              const res = getWifiNetworkListIw(iface);
              if (res === -1) {
                // try again after 4 secs
                setTimeout(function (iface) {
                  const res = getWifiNetworkListIw(iface);
                  if (res != -1) { result = res; }
                  if (callback) {
                    callback(result);
                  }
                  resolve(result);
                }, 4000);
              } else {
                result = res;
                if (callback) {
                  callback(result);
                }
                resolve(result);
              }
            } else {
              if (callback) {
                callback(result);
              }
              resolve(result);
            }
          } catch (e) {
            if (callback) {
              callback(result);
            }
            resolve(result);
          }
        } else {
          if (callback) {
            callback(result);
          }
          resolve(result);
        }
      } else if (_darwin) {
        let cmd = '/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -s';
        exec(cmd, { maxBuffer: 1024 * 20000 }, function (error, stdout) {
          const lines = stdout.toString().split(os.EOL);
          if (lines && lines.length > 1) {
            const parsedhead = util.parseHead(lines[0], 1);
            if (parsedhead.length >= 7) {
              lines.shift();
              lines.forEach(line => {
                if (line.trim()) {
                  const channelStr = line.substring(parsedhead[3].from, parsedhead[3].to).trim();
                  const channel = channelStr ? parseInt(channelStr, 10) : null;
                  const signalLevel = line.substring(parsedhead[2].from, parsedhead[2].to).trim();
                  const securityAll = line.substring(parsedhead[6].from, 1000).trim().split(' ');
                  let security = [];
                  let wpaFlags = [];
                  securityAll.forEach(securitySingle => {
                    if (securitySingle.indexOf('(') > 0) {
                      const parts = securitySingle.split('(');
                      security.push(parts[0]);
                      wpaFlags = wpaFlags.concat(parts[1].replace(')', '').split(','));
                    }
                  });
                  wpaFlags = Array.from(new Set(wpaFlags));
                  result.push({
                    ssid: line.substring(parsedhead[0].from, parsedhead[0].to).trim(),
                    bssid: line.substring(parsedhead[1].from, parsedhead[1].to).trim().toLowerCase(),
                    mode: '',
                    channel,
                    frequency: wifiFrequencyFromChannel(channel),
                    signalLevel: signalLevel ? parseInt(signalLevel, 10) : null,
                    quality: wifiQualityFromDB(signalLevel),
                    security,
                    wpaFlags,
                    rsnFlags: []
                  });
                }
              });
            }
          }
          if (callback) {
            callback(result);
          }
          resolve(result);
        });
      } else if (_windows) {
        let cmd = 'chcp 65001 && netsh wlan show networks mode=Bssid';
        exec(cmd, util.execOptsWin, function (error, stdout) {

const parts = stdout.toString('utf8').split(os.EOL + os.EOL + 'SSID ');
          parts.shift();

parts.forEach(part => {
            const lines = part.split(os.EOL);
            if (lines && lines.length >= 8 && lines[0].indexOf(':') >= 0) {
              let bssid = lines[4].split(':');
              bssid.shift();
              bssid = bssid.join(':').trim().toLowerCase();
              const channel = lines[7].split(':').pop().trim();
              const quality = lines[5].split(':').pop().trim();
              result.push({
                ssid: lines[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: [lines[2].split(':').pop().trim()],
                wpaFlags: [lines[3].split(':').pop().trim()],
                rsnFlags: []
              });
            }
          });

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

exports.wifiNetworks = wifiNetworks;

function wifiConnections(callback) {

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

if (_linux) {
        const ifaces = ifaceListLinux();
        const networkList = getWifiNetworkListNmi();
        ifaces.forEach(ifaceDetail => {
          const nmiDetails = nmiDeviceLinux(ifaceDetail.iface);
          const wpaDetails = wpaConnectionLinux(ifaceDetail.iface);
          const ssid = nmiDetails.ssid || wpaDetails.ssid;
          const network = networkList.filter(nw => nw.ssid === ssid);
          const nmiConnection = nmiConnectionLinux(ssid);
          const channel = network && network.length && network[0].channel ? network[0].channel : (wpaDetails.channel ? wpaDetails.channel : null);
          const bssid = network && network.length && network[0].bssid ? network[0].bssid : (wpaDetails.bssid ? wpaDetails.bssid : null);
          if (ssid && bssid) {
            result.push({
              id: ifaceDetail.id,
              iface: ifaceDetail.iface,
              model: nmiDetails.product,
              ssid,
              bssid: network && network.length && network[0].bssid ? network[0].bssid : (wpaDetails.bssid ? wpaDetails.bssid : null),
              channel,
              frequency: channel ? wifiFrequencyFromChannel(channel) : null,
              type: nmiConnection.type ? nmiConnection.type : '802.11',
              security: nmiConnection.security ? nmiConnection.security : (wpaDetails.security ? wpaDetails.security : null),
              signalLevel: network && network.length && network[0].signalLevel ? network[0].signalLevel : null,
              txRate: null
            });
          }
        });
        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 model = util.getValue(lines, 'hardware', ':', true);
            cmd = '/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -I';
            exec(cmd, function (error, stdout) {
              const lines2 = stdout.toString().split('\n');
              if (lines.length > 10) {
                const ssid = util.getValue(lines2, 'ssid', ':', true);
                const bssid = util.getValue(lines2, 'bssid', ':', true);
                const security = util.getValue(lines2, 'link auth', ':', true);
                const txRate = util.getValue(lines2, 'lastTxRate', ':', true);
                const channel = util.getValue(lines2, 'channel', ':', true).split(',')[0];
                const type = '802.11';
                const rssi = util.toInt(util.getValue(lines2, 'agrCtlRSSI', ':', true));
                const noise = util.toInt(util.getValue(lines2, 'agrCtlNoise', ':', true));
                const signalLevel = rssi - noise;
                // const signal = wifiQualityFromDB(signalLevel);
                if (ssid && bssid) {
                  result.push({
                    id: 'Wi-Fi',
                    iface,
                    model,
                    ssid,
                    bssid,
                    channel: util.toInt(channel),
                    frequency: channel ? wifiFrequencyFromChannel(channel) : null,
                    type,
                    security,
                    signalLevel,
                    txRate
                  });

}
              }
              if (callback) {
                callback(result);
              }
              resolve(result);
            });
          }
        });
      } else if (_windows) {
        let cmd = 'netsh wlan show interfaces';
        exec(cmd, util.execOptsWin, function (error, stdout) {
          const parts = stdout.toString().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 ssid = util.getValue(lines, 'SSID', ':', true);
              const bssid = util.getValue(lines, 'BSSID', ':', true);
              const signalLevel = util.getValue(lines, 'Signal', ':', true);
              const type = util.getValue(lines, 'Radio type', ':', true) || util.getValue(lines, 'Type de radio', ':', true) || util.getValue(lines, 'Funktyp', ':', true) || null;
              const security = util.getValue(lines, 'authentication', ':', true) || util.getValue(lines, 'Authentification', ':', true) || util.getValue(lines, 'Authentifizierung', ':', true) || null;
              const channel = util.getValue(lines, 'Channel', ':', true) || util.getValue(lines, 'Canal', ':', true) || util.getValue(lines, 'Kanal', ':', true) || null;
              const txRate = util.getValue(lines, 'Transmit rate (mbps)', ':', true) || util.getValue(lines, 'Transmission (mbit/s)', ':', true) || util.getValue(lines, 'Empfangsrate (MBit/s)', ':', true) || null;
              if (model && id && ssid && bssid) {
                result.push({
                  id,
                  iface,
                  model,
                  ssid,
                  bssid,
                  channel: util.toInt(channel),
                  frequency: channel ? wifiFrequencyFromChannel(channel) : null,
                  type,
                  security,
                  signalLevel,
                  txRate: util.toInt(txRate) || null
                });
              }
            }
          });
          if (callback) {
            callback(result);
          }
          resolve(result);
        });
      } else {
        if (callback) {
          callback(result);
        }
        resolve(result);
      }
    });
  });
}

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';
        exec(cmd, util.execOptsWin, function (error, stdout) {
          const parts = stdout.toString().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;

MR SKB