public CDPType0002(CDPMessage cdp)
{
int pos = 0;
int len = 0;
Byte[] d = null;
type = cdp.Data[pos++];
len = cdp.Data[pos++];
protocol = 0;
for (int i = 0; i < len; i++)
{
protocol = protocol << 8 | cdp.Data[pos++];
}
len = cdp.Data[pos++];
Array.Resize(ref d, len);
for (int i = 0; i < len; i++)
{
d[i] = cdp.Data[pos++];
}
address = d;
}
public CDPType0004(CDPMessage cdp)
{
int pos = 0;
Byte[] d = null;
Array.Resize(ref d, cdp.Size);
for (int i = 0; i < cdp.Size; i++)
{
d[i] = cdp.Data[pos++];
}
data = d;
}
public CDPDecoder(Packet packet)
{
CDPMessage[] data = null;
int Pos = 22;
int Count = 0;
Version = packet[Pos++];
TTL = packet[Pos++];
CheckSum = (UInt16)((UInt16)(packet[Pos++] << 8) | (UInt16)(packet[Pos++]));
while (Pos < packet.Length)
{
Array.Resize(ref data, Count + 1);
data[Count] = new CDPMessage(Pos, packet);
//MessageBox.Show("Message #" + Count + ", CDP Message : " + data[Count].typeName() + ", Length : " + data[Count].Size.ToString());
Pos = Pos + data[Count].Size + 4;
Count++;
}
Data = data;
}
public CDPDecoder(Packet packet)
{
CDPMessage[] data = null;
int Pos = 22;
int Count = 0;
Version = packet[Pos++];
TTL = packet[Pos++];
CheckSum = (UInt16)((UInt16)(packet[Pos++] << 8) | (UInt16)(packet[Pos++]));
while (Pos < packet.Length)
{
Array.Resize(ref data, Count + 1);
data[Count] = new CDPMessage(Pos, packet);
//MessageBox.Show("Message #" + Count + ", CDP Message : " + data[Count].typeName() + ", Length : " + data[Count].Size.ToString());
Pos = Pos + data[Count].Size + 4;
Count++;
}
Data = data;
}
public CDPType0001(CDPMessage cdp)
{
data = Encoding.Default.GetString(cdp.Data, 0, cdp.Size);
}
public CDPType0009(CDPMessage cdp)
{
data = Encoding.Default.GetString(cdp.Data, 0, cdp.Size);
}
public CDPType0004(CDPMessage cdp)
{
int pos = 0;
Byte[] d = null;
Array.Resize(ref d, cdp.Size);
for (int i = 0; i < cdp.Size; i++)
{
d[i] = cdp.Data[pos++];
}
data = d;
}
public CDPType0002(CDPMessage cdp)
{
int pos = 0;
int len = 0;
Byte[] d = null;
type = cdp.Data[pos++];
len = cdp.Data[pos++];
protocol = 0;
for (int i = 0; i < len; i++)
{
protocol = protocol << 8 | cdp.Data[pos++];
}
len = cdp.Data[pos++];
Array.Resize(ref d, len);
for (int i = 0; i < len; i++)
{
d[i] = cdp.Data[pos++];
}
address = d;
}
public CDPToText(CDPMessage[] cdpMessages)
{
StringBuilder sb = new StringBuilder();
foreach (CDPMessage cdpMessage in cdpMessages)
{
switch (cdpMessage.Type)
{
case 0x0001:
sb.Append("Device ID : " + Encoding.Default.GetString(cdpMessage.Data, 0, cdpMessage.Size) + "\n\n");
break;
case 0x0002:
sb.Append("Addresses : ");
sb.Append(decodeAddress("Addresses : ", cdpMessage.Data, cdpMessage.Size));
break;
case 0x0003:
sb.Append("Port ID : " + Encoding.Default.GetString(cdpMessage.Data, 0, cdpMessage.Size) + "\n\n");
break;
case 0x0004:
{
string st = "\n" + new String(' ', 15);
sb.Append("Capabilities : ");
for (int i = 0; i < cdpMessage.Size; i++)
{
if (byteCmp(cdpMessage.Data[i], 0x01))
{
sb.Append("Performs level 3 routing for at least one network layer protocol." + st);
}
if (byteCmp(cdpMessage.Data[i], 0x02))
{
sb.Append("Performs level 2 transparent bridging." + st);
}
if (byteCmp(cdpMessage.Data[i], 0x04))
{
sb.Append("Performs level 2 source-route bridging." + st);
}
if (byteCmp(cdpMessage.Data[i], 0x08))
{
sb.Append("Performs level 2 switching." + st);
}
if (byteCmp(cdpMessage.Data[i], 0x10))
{
sb.Append("Sends and receives packets for at least one network layer protocol." + st);
}
if (byteCmp(cdpMessage.Data[i], 0x20))
{
sb.Append("The bridge or switch does not forward IGMP." + st);
}
if (byteCmp(cdpMessage.Data[i], 0x40))
{
sb.Append("Provides level 1 functionality." + st);
}
}
sb.Append("\n");
}
break;
case 0x0005:
sb.Append("Software version:\n\n" + Encoding.Default.GetString(cdpMessage.Data, 0, cdpMessage.Size) + "\n\n");
break;
case 0x0006:
sb.Append("Platform: " + Encoding.Default.GetString(cdpMessage.Data, 0, cdpMessage.Size) + "\n\n");
break;
case 0x0007:
sb.Append("IP Prefix : ");
sb.Append(hexDump(new String(' ', 12), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n");
break;
case 0x0008:
sb.Append("Protocol Hello : ");
sb.Append(hexDump(new String(' ', 17), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n");
break;
case 0x0009:
sb.Append("VTP Domain : " + Encoding.Default.GetString(cdpMessage.Data, 0, cdpMessage.Size) + "\n\n");
break;
case 0x000a:
{
UInt64 vlan = 0;
sb.Append("Native VLAN : ");
for (int i = 0; i < cdpMessage.Size; i++)
{
vlan = (vlan << 8) | cdpMessage.Data[i];
}
sb.Append(vlan.ToString() + "\n\n");
}
break;
case 0x000b:
sb.Append("Duplex : ");
if (cdpMessage.Data[0] == 0)
{
sb.Append("Half\n\n");
}
else
{
sb.Append("Full\n\n");
}
break;
case 0x000e:
{
int index = cdpMessage.Data[0], count = 0;
sb.Append("VOIP Vlan : ");
for (int i = 1; i < cdpMessage.Size; i += 2)
{
int vlan = 0;
count++;
vlan = (cdpMessage.Data[i] << 8) | cdpMessage.Data[i + 1];
sb.Append(vlan.ToString());
if (count < index)
{
sb.Append(", ");
}
}
sb.Append("\n\n");
}
break;
case 0x000f:
sb.Append("VOIP Vlan Query : ");
sb.Append(hexDump(new String(' ', 18), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x0010:
sb.Append("Power : ");
sb.Append(hexDump(new String(' ', 8), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x0011:
sb.Append("MTU : ");
sb.Append(hexDump(new String(' ', 6), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x0012:
sb.Append("Trust Bitmap : ");
sb.Append(hexDump(new String(' ', 15), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x0013:
sb.Append("Untrusted COS : ");
sb.Append(hexDump(new String(' ', 16), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x0014:
sb.Append("System Name : " + Encoding.Default.GetString(cdpMessage.Data, 0, cdpMessage.Size) + "\n\n");
break;
case 0x0015:
sb.Append("System ODI : ");
sb.Append(hexDump(new String(' ', 13), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x0016:
sb.Append(decodeAddress("Management Address : ", cdpMessage.Data, cdpMessage.Size));
sb.Append("\n\n");
break;
case 0x0017:
sb.Append("Location : ");
sb.Append(hexDump(new String(' ', 11), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x0018:
sb.Append("External Port ID : ");
sb.Append(hexDump(new String(' ', 19), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x0019:
sb.Append("Power Requested : ");
sb.Append(hexDump(new String(' ', 18), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x001a:
sb.Append("Power Avalable : ");
sb.Append(hexDump(new String(' ', 17), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x001b:
sb.Append("Port Unidir : ");
sb.Append(hexDump(new String(' ', 14), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x001d:
sb.Append("NRGYZ : ");
sb.Append(hexDump(new String(' ', 8), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x001f:
sb.Append("Spare POE : ");
sb.Append(hexDump(new String(' ', 12), cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
case 0x1003:
sb.Append("Could someone tell me what this Type (0x1003) is? :\n");
sb.Append(hexDump("", cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
default:
sb.Append("Unknown Message (" + cdpMessage.Type.ToString() + ") :\n");
sb.Append(hexDump("", cdpMessage.Data, cdpMessage.Size, 8));
// XXX TODO Decode Address
sb.Append("\n\n");
break;
}
text = sb.ToString();
}
}
