private Server(IPAddress addy, int inport, int outport,delGetIP getIP,delGetOptions getOptions,delProcessRenew processRenew,delReleaseIP releaseIP, delLogLine log)
{
_serverIP = addy;
_inport = inport;
_outport = outport;
_getIP = getIP;
_getOptions = getOptions;
_processRenew = processRenew;
_releaseIP = releaseIP;
_log = log;
}
private Server(IPAddress addy, int inport, int outport, delGetIP getIP, delGetOptions getOptions, delProcessRenew processRenew, delReleaseIP releaseIP, delLogLine log)
{
_serverIP = addy;
_inport = inport;
_outport = outport;
_getIP = getIP;
_getOptions = getOptions;
_processRenew = processRenew;
_releaseIP = releaseIP;
_log = log;
}
public DHCPMessage(byte[] msg, delLogLine log)
{
_start = DateTime.Now;
if (log != null)
{
log(LogLevels.Trace, "Parsing DHCP Message of length: " + msg.Length);
}
BinaryReader br = new BinaryReader(new MemoryStream(msg));
_opcode = (DHCPOpCode)br.ReadByte();
_hardwareType = br.ReadByte();
_addressLen = br.ReadByte();
_hops = br.ReadByte();
_transactionID = br.ReadInt32();
_seconds = br.ReadInt16();
_broadcast = (br.ReadInt16() ^ 0x8000) == 0x8000;
_clientIP = br.ReadInt32();
_assignedIP = br.ReadInt32();
_serverIP = br.ReadInt32();
_relayIP = br.ReadInt32();
byte[] tmp = br.ReadBytes(16);
_mac = new byte[_addressLen];
for (int x = 0; x < _mac.Length; x++)
{
_mac[x] = tmp[x];
}
tmp = br.ReadBytes(64);
MemoryStream ms = new MemoryStream();
for (int x = 0; x < tmp.Length; x++)
{
if (tmp[x] == (byte)'\0')
{
break;
}
else
{
ms.WriteByte(tmp[x]);
}
}
_serverHostName = System.Text.ASCIIEncoding.ASCII.GetString(ms.ToArray());
tmp = br.ReadBytes(128);
ms = new MemoryStream();
for (int x = 0; x < tmp.Length; x++)
{
if (tmp[x] == (byte)'\0')
{
break;
}
else
{
ms.WriteByte(tmp[x]);
}
}
_file = System.Text.ASCIIEncoding.ASCII.GetString(ms.ToArray());
_options = new List <DHCPOption>();
if (br.ReadInt32() == BitConverter.ToInt32(new byte[] { (byte)0x63, (byte)0x82, (byte)0x53, (byte)0x63 }, 0))
{
byte b;
while ((b = br.ReadByte()) != (byte)255)
{
tmp = new byte[(int)br.ReadByte() + 2];
tmp[0] = b;
tmp[1] = (byte)(tmp.Length - 2);
br.ReadBytes(tmp.Length - 2).CopyTo(tmp, 2);
_options.Add(new DHCPOption(tmp));
}
}
}
public static Server StartServer(IPAddress addy, int inport, int outport, delGetIP getIP, delGetOptions getOptions, delProcessRenew processRenew, delReleaseIP releaseIP, delLogLine log)
{
return new Server(addy, inport, outport,getIP,getOptions,processRenew,releaseIP,log);
}
public static Server StartServer(IPAddress addy, int inport, int outport, delGetIP getIP, delGetOptions getOptions, delProcessRenew processRenew, delReleaseIP releaseIP, delLogLine log)
{
return(new Server(addy, inport, outport, getIP, getOptions, processRenew, releaseIP, log));
}
public DHCPMessage(byte[] msg,delLogLine log)
{
_start = DateTime.Now;
if (log!=null)
log(LogLevels.Trace,"Parsing DHCP Message of length: " + msg.Length);
BinaryReader br = new BinaryReader(new MemoryStream(msg));
_opcode = (DHCPOpCode)br.ReadByte();
_hardwareType = br.ReadByte();
_addressLen = br.ReadByte();
_hops = br.ReadByte();
_transactionID = br.ReadInt32();
_seconds = br.ReadInt16();
_broadcast = (br.ReadInt16() ^ 0x8000) == 0x8000;
_clientIP = br.ReadInt32();
_assignedIP = br.ReadInt32();
_serverIP = br.ReadInt32();
_relayIP = br.ReadInt32();
byte[] tmp = br.ReadBytes(16);
_mac = new byte[_addressLen];
for (int x = 0; x < _mac.Length; x++)
_mac[x] = tmp[x];
tmp = br.ReadBytes(64);
MemoryStream ms = new MemoryStream();
for (int x = 0; x < tmp.Length; x++)
{
if (tmp[x] == (byte)'\0')
break;
else
ms.WriteByte(tmp[x]);
}
_serverHostName = System.Text.ASCIIEncoding.ASCII.GetString(ms.ToArray());
tmp = br.ReadBytes(128);
ms = new MemoryStream();
for (int x = 0; x < tmp.Length; x++)
{
if (tmp[x] == (byte)'\0')
break;
else
ms.WriteByte(tmp[x]);
}
_file = System.Text.ASCIIEncoding.ASCII.GetString(ms.ToArray());
_options = new List<DHCPOption>();
if (br.ReadInt32() == BitConverter.ToInt32(new byte[]{(byte)0x63,(byte)0x82,(byte)0x53,(byte)0x63},0))
{
byte b;
while ((b = br.ReadByte()) != (byte)255)
{
tmp = new byte[(int)br.ReadByte()+2];
tmp[0] = b;
tmp[1] = (byte)(tmp.Length - 2);
br.ReadBytes(tmp.Length - 2).CopyTo(tmp, 2);
_options.Add(new DHCPOption(tmp));
}
}
}
