Function findInterfacesLinux

index.js:107–164

(targets)

}

function findInterfacesLinux (targets) {
  // Parse the output of `ifconfig` which gives us:
  // - the adapter description
  // - the adapter name/device associated with this, if any,
  // - the MAC address, if any

  let output = cp.execSync('ifconfig', { stdio: 'pipe' }).toString()

  const details = []
  while (true) {
    const result = /(.*?)HWaddr(.*)/mi.exec(output)
    if (!result || !result[1] || !result[2]) {
      break
    }
    details.push(result[1], result[2])
    output = output.slice(result.index + result[0].length)
  }

  const interfaces = []

  for (let i = 0; i < details.length; i += 2) {
    const s = details[i].split(':')

    let device, port
    if (s.length >= 2) {
      device = s[0].split(' ')[0]
      port = s[1].trim()
    }

    let address = details[i + 1].trim()
    if (address) {
      address = normalize(address)
    }

    const it = {
      address: address,
      currentAddress: getInterfaceMAC(device),
      device: device,
      port: port
    }

    if (targets.length === 0) {
      // Not trying to match anything in particular, return everything.
      interfaces.push(it)
      continue
    }

    for (let j = 0; j < targets.length; j++) {
      const target = targets[j]
      if (target === port.toLowerCase() || target === device.toLowerCase()) {
        interfaces.push(it)
        break
      }
    }
  }

  return interfaces
}