using System.Net.Sockets;
using System.Text;
// ReSharper disable once CheckNamespace
namespace System.Net
{
// Copied and adapted from https://github.com/mono/mono/blob/master/mcs/class/Mono.Posix/Mono.Unix/UnixEndPoint.cs
class UnixEndPoint : EndPoint
{
string _filename;
public UnixEndPoint (string filename)
{
if (filename == null)
throw new ArgumentNullException(nameof(filename));
if (filename == "")
throw new ArgumentException ("Cannot be empty.", nameof(filename));
_filename = filename;
}
public string Filename {
get => _filename;
set => _filename = value;
}
public override AddressFamily AddressFamily => AddressFamily.Unix;
public override EndPoint Create(SocketAddress socketAddress)
{
/*
* Should also check this
*
int addr = (int) AddressFamily.Unix;
if (socketAddress [0] != (addr & 0xFF))
throw new ArgumentException ("socketAddress is not a unix socket address.");
if (socketAddress [1] != ((addr & 0xFF00) >> 8))
throw new ArgumentException ("socketAddress is not a unix socket address.");
*/
if (socketAddress.Size == 2) {
// Empty filename.
// Probably from RemoteEndPoint which on linux does not return the file name.
return new UnixEndPoint("a") { _filename = "" };
}
var size = socketAddress.Size - 2;
var bytes = new byte[size];
for (var i = 0; i < bytes.Length; i++) {
bytes[i] = socketAddress[i + 2];
// There may be junk after the null terminator, so ignore it all.
if (bytes[i] == 0) {
size = i;
break;
}
}
var name = Encoding.UTF8.GetString(bytes, 0, size);
return new UnixEndPoint(name);
}
public override SocketAddress Serialize()
{
var bytes = Encoding.UTF8.GetBytes(_filename);
var sa = new SocketAddress(AddressFamily, 2 + bytes.Length + 1);
// sa [0] -> family low byte, sa [1] -> family high byte
for (var i = 0; i < bytes.Length; i++)
sa[2 + i] = bytes[i];
//NULL suffix for non-abstract path
sa[2 + bytes.Length] = 0;
return sa;
}
public override string ToString() => _filename;
public override int GetHashCode () => _filename.GetHashCode();
public override bool Equals(object? o)
{
var other = o as UnixEndPoint;
if (other == null)
return false;
return (other._filename == _filename);
}
}
}