private static byte[] BuildDataStructure(DHCPMessage.Packet packet)
{
byte[] mArray;
try
{
mArray = new byte[0];
AddOptionElement(new [] { packet.op }, ref mArray);
AddOptionElement(new [] { packet.htype }, ref mArray);
AddOptionElement(new [] { packet.hlen }, ref mArray);
AddOptionElement(new [] { packet.hops }, ref mArray);
AddOptionElement(packet.xid, ref mArray);
AddOptionElement(packet.secs, ref mArray);
AddOptionElement(packet.flags, ref mArray);
AddOptionElement(packet.ciaddr, ref mArray);
AddOptionElement(packet.yiaddr, ref mArray);
AddOptionElement(packet.siaddr, ref mArray);
AddOptionElement(packet.giaddr, ref mArray);
AddOptionElement(packet.chaddr, ref mArray);
AddOptionElement(packet.sname, ref mArray);
AddOptionElement(packet.file, ref mArray);
AddOptionElement(packet.mcookie, ref mArray);
AddOptionElement(packet.options, ref mArray);
return(mArray);
}
finally
{
mArray = null;
}
}
/// <summary>
/// Returns option content
/// </summary>
/// <param name="option">Option to retrieve</param>
/// <param name="requestData">requested Data</param>
/// <returns>Option content</returns>
public static byte[] GetOptionData(DHCPOption option, DHCPMessage.Packet requestData)
{
int DHCPId = 0;
byte DDataID, DataLength = 0;
byte[] dumpData;
DHCPId = (int)option;
for (int i = 0; i < requestData.options.Length; i++)
{
DDataID = requestData.options[i];
if (DDataID == (byte)DHCPOption.END_Option)
{
break;
}
if (DDataID == DHCPId)
{
DataLength = requestData.options[i + 1];
dumpData = new byte[DataLength];
Array.Copy(requestData.options, i + 2, dumpData, 0, DataLength);
return(dumpData);
}
else
{
DataLength = requestData.options[i + 1];
i += 1 + DataLength;
}
}
return(null);
}