Ejemplo n.º 1
0
        static void Request(DHCPRequest dhcpRequest)
        {
            var type = dhcpRequest.GetMsgType();
            var mac = ByteArrayToString(dhcpRequest.GetChaddr());
            // IP for client
            IPAddress ip;
            if (!leases.TryGetValue(mac, out ip))
            {
                ip = new IPAddress(new byte[] { 10, 0, 0, nextIP++ });
                leases[mac] = ip;
            }
            Console.WriteLine(type.ToString() + " request from " + mac + ", it will be " + ip.ToString());

            var options = dhcpRequest.GetAllOptions();
            Console.Write("Options:");
            foreach (DHCPOption option in options.Keys)
            {
                Console.WriteLine(option.ToString() + ": " + ByteArrayToString(options[option]));
            }
            // Lets show some request info
            var requestedOptions = dhcpRequest.GetRequestedOptionsList();
            if (requestedOptions != null)
            {
                Console.Write("Requested options:");
                foreach (DHCPOption option in requestedOptions) Console.Write(" " + option.ToString());
                Console.WriteLine();
            }
            // Option 82 info
            var relayInfoN = dhcpRequest.GetRelayInfo();
            if (relayInfoN != null)
            {
                var relayInfo = (RelayInfo)relayInfoN;
                if (relayInfo.AgentCircuitID != null) Console.WriteLine("Relay agent circuit ID: " + ByteArrayToString(relayInfo.AgentCircuitID));
                if (relayInfo.AgentRemoteID != null) Console.WriteLine("Relay agent remote ID: " + ByteArrayToString(relayInfo.AgentRemoteID));
            }
            Console.WriteLine();

            var replyOptions = new DHCPReplyOptions();
            // Options should be filled with valid data. Only requested options will be sent.
            replyOptions.SubnetMask = IPAddress.Parse("255.255.255.0");
            replyOptions.DomainName = "SharpDHCPServer";
            replyOptions.ServerIdentifier = IPAddress.Parse("10.0.0.1");
            replyOptions.RouterIP = IPAddress.Parse("10.0.0.1");
            replyOptions.DomainNameServers = new IPAddress[] { IPAddress.Parse("192.168.100.2"), IPAddress.Parse("192.168.100.3") };
            // Some static routes
            replyOptions.StaticRoutes = new NetworkRoute[] {
                new NetworkRoute(IPAddress.Parse("10.0.0.0"), IPAddress.Parse("255.0.0.0"), IPAddress.Parse("10.0.0.1")),
                new NetworkRoute(IPAddress.Parse("192.168.0.0"), IPAddress.Parse("255.255.0.0"), IPAddress.Parse("10.0.0.1")),
                new NetworkRoute(IPAddress.Parse("172.16.0.0"), IPAddress.Parse("255.240.0.0"), IPAddress.Parse("10.0.0.1")),
                new NetworkRoute(IPAddress.Parse("80.252.130.248"), IPAddress.Parse("255.255.255.248"), IPAddress.Parse("10.0.0.1")),
                new NetworkRoute(IPAddress.Parse("80.252.128.88"), IPAddress.Parse("255.255.255.248"), IPAddress.Parse("10.0.0.1")),
            };

            // Lets send reply to client!
            if (type == DHCPMsgType.DHCPDISCOVER)
                dhcpRequest.SendDHCPReply(DHCPMsgType.DHCPOFFER, ip, replyOptions);
            if (type == DHCPMsgType.DHCPREQUEST)
                dhcpRequest.SendDHCPReply(DHCPMsgType.DHCPACK, ip, replyOptions);
        }
        private void DataReceived(object o)
        {
            var data = (byte[])o;

            try
            {
                var dhcpRequest = new DHCPRequest(data, socket, this);
                //ccDHCP = new clsDHCP();


                //data is now in the structure
                //get the msg type
                OnDataReceived(dhcpRequest);
                var msgType = dhcpRequest.GetMsgType();
                switch (msgType)
                {
                case DHCPMsgType.DHCPDISCOVER:
                    OnDiscover(dhcpRequest);
                    break;

                case DHCPMsgType.DHCPREQUEST:
                    OnRequest(dhcpRequest);
                    break;

                case DHCPMsgType.DHCPDECLINE:
                    OnDecline(dhcpRequest);
                    break;

                case DHCPMsgType.DHCPRELEASE:
                    OnReleased(dhcpRequest);
                    break;

                case DHCPMsgType.DHCPINFORM:
                    OnInform(dhcpRequest);
                    break;
                    //default:
                    //    Console.WriteLine("Unknown DHCP message: " + (int)MsgTyp + " (" + MsgTyp.ToString() + ")");
                    //    break;
                }
            }
            catch
            {
                // Ignore
            }
        }
        private void DataReceived(object o)
        {
            var data = (byte[])o;
            try
            {
                var dhcpRequest = new DHCPRequest(data, socket, this);
                //ccDHCP = new clsDHCP();


                //data is now in the structure
                //get the msg type
                OnDataReceived(dhcpRequest);
                var msgType = dhcpRequest.GetMsgType();
                switch (msgType)
                {
                    case DHCPMsgType.DHCPDISCOVER:
                        OnDiscover(dhcpRequest);
                        break;
                    case DHCPMsgType.DHCPREQUEST:
                        OnRequest(dhcpRequest);
                        break;
                    case DHCPMsgType.DHCPDECLINE:
                        OnDecline(dhcpRequest);
                        break;
                    case DHCPMsgType.DHCPRELEASE:
                        OnReleased(dhcpRequest);
                        break;
                    case DHCPMsgType.DHCPINFORM:
                        OnInform(dhcpRequest);
                        break;
                    //default:
                    //    Console.WriteLine("Unknown DHCP message: " + (int)MsgTyp + " (" + MsgTyp.ToString() + ")");
                    //    break;
                }
            }
            catch
            {
                // Ignore
            }
        }