void HandleRequest(object state)
{
// try to logon the user and create the response
var request = (Request)state;
int timeout;
try { timeout = LogonAndCreateSession(request.UserName, request.Password, request.Address); }
catch (OleDbException e)
{
ServiceApplication.LogEvent(EventLogEntryType.Error, e.Message);
return;
}
var response = new RadiusPacket(timeout < 0 ? PacketCode.AccessReject : PacketCode.AccessAccept);
response.Identifier = request.Identifier;
if (timeout > 0)
{
response.Attribute(RadiusAttribute.SessionTimeout).Add(timeout);
}
response.Attribute(RadiusAttribute.ProxyState).AddRange(request.ProxyStates);
response.SignResponse(request.Authenticator, sharedSecred);
try { socket.SendTo(response.GetBuffer(), 0, response.Length, SocketFlags.None, request.Client); }
catch (ObjectDisposedException) { }
catch (SocketException e) { ServiceApplication.LogEvent(EventLogEntryType.Error, e.Message); }
}
/// <summary>
/// 認証実行
/// </summary>
/// <returns>true 認証成功, false 認証失敗</returns>
private bool auth()
{
IPAddress[] addrList = Dns.GetHostAddresses(Dns.GetHostName());
IPAddress addr = null;
// 一番最初に見つかったIPv4アドレスを送信元とする
// TODO: いろいろ変なので調整が必要
foreach (IPAddress ipa in addrList)
{
if (ipa.AddressFamily == AddressFamily.InterNetwork)
{
addr = ipa;
break;
}
}
IPEndPoint local = new IPEndPoint(addr, (new Random((int)DateTime.Now.ToBinary())).Next(49152, 65535)); // TODO: 定数があれば使う
UdpClient udp = new UdpClient(local);
udp.Send(request.GetBuffer(), request.Length, serverHost, int.Parse(serverPort)); // TODO: int.Parse() は安全だっけ？
IPEndPoint remote = null;
byte[] rbuf = udp.Receive(ref remote);
udp.Close();
reply = new RadiusPacket(rbuf);
if (request.PacketIdentifier == reply.PacketIdentifier)
{
if (reply.Code == RadiusPacket.CODE.ACCESS_ACCEPT)
{
return(true);
}
}
return(false);
}