internal static void ARPCache_Update(ARPReply_Ethernet arp_reply)
{
ensureQueueExists();
//foreach (BufferEntry entry in queue)
for (int e = 0; e < queue.Count; e++)
{
BufferEntry entry = queue[e];
if (entry.Status == BufferEntry.EntryStatus.ARP_SENT)
{
var xDestIP = entry.Packet.DestinationIP.Hash;
var xSenderIP = arp_reply.SenderIP.Hash;
if (entry.Packet.DestinationIP.CompareTo(arp_reply.SenderIP) == 0)
{
entry.Packet.DestinationMAC = arp_reply.SenderMAC;
entry.Status = BufferEntry.EntryStatus.JUST_SEND;
}
}
else if (entry.Status == BufferEntry.EntryStatus.ROUTE_ARP_SENT)
{
if (entry.nextHop.CompareTo(arp_reply.SenderIP) == 0)
{
entry.Packet.DestinationMAC = arp_reply.SenderMAC;
entry.Status = BufferEntry.EntryStatus.JUST_SEND;
}
}
}
}
/// <summary>
/// Initialize the Network Stack to prepare it for operation.
/// </summary>
/// <exception cref="ArgumentOutOfRangeException">Thrown on fatal error (contact support).</exception>
public static void Init()
{
AddressMap = new TempDictionary <NetworkDevice>();
// VMT Scanner issue workaround
ARPPacket.VMTInclude();
ARPPacket_Ethernet.VMTInclude();
ARPReply_Ethernet.VMTInclude();
ARPRequest_Ethernet.VMTInclude();
ICMPPacket.VMTInclude();
ICMPEchoReply.VMTInclude();
ICMPEchoRequest.VMTInclude();
UDPPacket.VMTInclude();
//TCPPacket.VMTInclude();
}
internal static void ARPHandler(byte[] packetData)
{
ARPPacket arp_packet = new ARPPacket(packetData);
//[Received] " + arp_packet.ToString()
if (arp_packet.Operation == 0x01)
{
if ((arp_packet.HardwareType == 1) && (arp_packet.ProtocolType == 0x0800))
{
ARPRequest_Ethernet arp_request = new ARPRequest_Ethernet(packetData);
if (arp_request.SenderIP == null)
{
//SenderIP null in ARPHandler!
}
arp_request = new ARPRequest_Ethernet(packetData);
ARPCache.Update(arp_request.SenderIP, arp_request.SenderMAC);
if (NetworkStack.AddressMap.ContainsKey(arp_request.TargetIP.Hash) == true)
{
//ARP Request Recvd from " + arp_request.SenderIP.ToString()
NetworkDevice nic = NetworkStack.AddressMap[arp_request.TargetIP.Hash];
ARPReply_Ethernet reply =
new ARPReply_Ethernet(nic.MACAddress, arp_request.TargetIP, arp_request.SenderMAC, arp_request.SenderIP);
nic.QueueBytes(reply.RawData);
}
}
}
else if (arp_packet.Operation == 0x02)
{
if ((arp_packet.HardwareType == 1) && (arp_packet.ProtocolType == 0x0800))
{
ARPReply_Ethernet arp_reply = new ARPReply_Ethernet(packetData);
//Received ARP Reply
//arp_reply.ToString()
//ARP Reply Recvd from " + arp_reply.SenderIP.ToString()
ARPCache.Update(arp_reply.SenderIP, arp_reply.SenderMAC);
IPV4.OutgoingBuffer.ARPCache_Update(arp_reply);
}
}
}
