/// <summary>
/// Clears the name resolver chache and reloads LMHosts file
/// </summary>
public static void ClearNameResolverCache()
{
NbtNameResolver.ClearCache();
}
public void DoCall(string netbiosname)
{
lock (this) // This entire method needs to be synchronized
{
// int retry_count = 0;
int port = SSN_SRVC_TCP_PORT;
InetAddress = NbtNameResolver.Resolve(netbiosname);
// Get the real NetBIOS name & Workgroup from an IP
NBTNameService ns = new NBTNameService();
NbInfo info = ns.queryStatus(InetAddress);
NetBiosName = info.Name;
WorkgroupName = info.Workgroup;
// If we couldn't resolve the name, then the host either doesn't
// exist or does not support CIFS.
if (NetBiosName == null)
{
throw new CifsIoException("CM2", InetAddress.ToString());
}
DoConnect(InetAddress, port);
byte[] packet = MakeRequestPacket(NetBiosName);
if (Debug.DebugOn && Debug.DebugLevel >= Debug.Info)
{
Debug.WriteLine(Debug.Info, "NetBIOS: doCall");
Debug.WriteLine(Debug.Info, "Called name=" + NetBiosName);
Debug.WriteLine(Debug.Info, "Calling name=" + fCallingName);
Debug.WriteLine(Debug.Info, "Called addr=" + InetAddress.ToString());
if (Debug.DebugLevel >= Debug.Buffer)
{
Debug.WriteLine(Debug.Buffer, "Packet to send:");
Debug.WriteLine(Debug.Buffer, packet, 0, packet.Length);
}
}
try
{
fOutput.Write(packet, 0, packet.Length);
fOutput.Flush();
}
catch (IOException e)
{
DoHangup();
throw new CifsIoException("NB500").setDetail(e);
}
// read header
try
{
int count = Read(packet, 0, HDR_SIZE);
if (Debug.DebugOn && Debug.DebugLevel >= Debug.Buffer)
{
Debug.WriteLine(Debug.Buffer, "Recieved packet:");
Debug.WriteLine(Debug.Buffer, packet, 0, packet.Length);
}
if (count < HDR_SIZE)
{
DoHangup();
throw new CifsIoException("NB501");
}
byte type = packet[HDR_TYPE_1];
switch (type)
{
case SPT_POS_RESPONSE:
/*
* POSITIVE SESSION RESPONSE PACKET
*
* 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| TYPE | FLAGS | LENGTH |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
break;
case SPT_NEG_RESPONSE:
/*
* NEGATIVE SESSION RESPONSE PACKET
*
* 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| TYPE | FLAGS | LENGTH |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ERROR_CODE |
+-+-+-+-+-+-+-+-+
*/
int rc = fInput.ReadByte();
Debug.WriteLine(Debug.Error, "NetBIOS: Negative response: " + rc);
DoHangup();
throw CifsIoException.getNBException(rc & 0xff);
case SPT_RTG_RESPONSE:
/*
* SESSION RETARGET RESPONSE PACKET
*
* 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| TYPE | FLAGS | LENGTH |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| RETARGET_IP_ADDRESS |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| PORT |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
count = Read(packet, 0, RT_SIZE);
DoHangup();
throw new CifsIoException("NB502");
default:
DoHangup();
throw new CifsRuntimeException("NB503", (Int32)type);
}
}
catch (IOException e)
{
DoHangup();
throw new CifsIoException("NB501").setDetail(e);
}
}
}
