void ParseBinaryVendorData(Stream data)
{
using (var binaryReader = new BinaryReader(data, Encoding.UTF8, leaveOpen: true))
{
while (binaryReader.BaseStream.Position != binaryReader.BaseStream.Length)
{
byte maskLength = binaryReader.ReadByte();
var identBytes = new byte[8];
var identBytesContainerSize = maskLength / 8 + Math.Min(1, maskLength % 8);
for (var i = 0; i < identBytesContainerSize; i++)
{
identBytes[8 - (identBytesContainerSize - i)] = binaryReader.ReadByte();
}
var ident = BitConverter.ToInt64(identBytes, 0);
var name = binaryReader.ReadString();
var info = new MacVendorInfo(ident, maskLength, name.Length == 0 ? null : name);
_entries.Add(info);
}
}
}
void ParseManufData(Stream manufData)
{
var streamReader = new StreamReader(manufData, Encoding.UTF8);
var bag = new ConcurrentBag <MacVendorInfo>();
/* Line format examples:
* 00:0B:73 KodeosCo # Kodeos Communications
* 00:50:C2:19:00:00/36 Goerlitz # Goerlitz AG
* 58:FC:DB:00:00:00/28 SpangPow # Spang Power Electronics
* 00-BF-00-00-00-00/16 MS-NLB-VirtServer
* 00-E0-2B-00-00-04 Extreme-EAPS
* 01-00-0C-00-00/40 ISL-Frame
* 01-00-5E/25 IPv4mcast
* 01-20-25/25 Control-Technology-Inc's-Industrial-Ctrl-Proto.
* 01-00-3C Auspex-Systems-(Serverguard)
* 09-00-56-FF-00-00/32 Stanford-V-Kernel,-version-6.0
*/
Parallel.ForEach(LineGenerator(streamReader), line =>
{
if (line.TrimStart(new char[0]).StartsWith("#", StringComparison.OrdinalIgnoreCase))
{
return;
}
if (string.IsNullOrWhiteSpace(line))
{
return;
}
var parts = line.Split(new char[0], 2, StringSplitOptions.RemoveEmptyEntries);
var macStr = parts[0];
var descParts = parts[1].Split(new[] { '#' }, StringSplitOptions.RemoveEmptyEntries);
var shortName = descParts[0].Trim();
string longName = null;
if (descParts.Length > 1)
{
longName = descParts[1].Trim();
}
byte mask = 0;
if (macStr.Contains("/"))
{
var macParts = macStr.Split(new[] { '/' }, 2, StringSplitOptions.None);
mask = byte.Parse(macParts[1], CultureInfo.InvariantCulture);
macStr = macParts[0];
}
var macHexParts = macStr.Split(new[] { ':', '-', '.' }, StringSplitOptions.None);
var macBytes = new byte[8];
if (mask == 0)
{
mask = (byte)(macHexParts.Length * 8);
}
for (var i = 0; i < macHexParts.Length; i++)
{
macBytes[i] = Convert.ToByte(macHexParts[i], 16);
}
var identLong = BitConverter.ToInt64(macBytes, 0);
identLong = IPAddress.HostToNetworkOrder(identLong);
var entry = new MacVendorInfo(identLong, mask, longName ?? shortName);
bag.Add(entry);
});
_entries = bag.ToList();
}