public override string ToString()
{
string response = "CID: " + this.ClientId.ToString() +
" | SESID: " + this.SessionId.ToHexString("0x") +
" | IP: " + this.Address.ToString() +
" | OWNER: " + this.Owner.ToString() +
" | NAME: " + ByteUtility.GetSafeString(_hostName) +
" | EXPN: " + this.Expiration.ToLocalTime().ToString() +
" | STATE: " + LeaseStateString.GetName(_state);
return(response);
}
/// <summary>
/// Converts dhcp message into string object.
/// </summary>
public override String ToString()
{
StringBuilder sb = new StringBuilder();
sb.AppendLine();
sb.AppendLine(" DHCP PACKET");
sb.AppendLine(String.Concat(" Message Timestamp : ", this.Timestamp.ToLocalTime().ToString()));
sb.AppendLine(String.Concat(" Message Type (op) : ", OperationString.GetName(this.Operation)));
sb.AppendLine(String.Concat(" Hardware Type (htype) : ", HardwareString.GetName(this.Hardware)));
sb.AppendLine(String.Concat(" Hops (hops) : ", ByteUtility.PrintByte(this.Hops)));
sb.AppendLine(String.Concat(" Transaction Id (Xid) : ", this.SessionId.ToHexString("0x")));
sb.AppendLine(String.Concat(" Seconds Elapsed (secs) : ", this.SecondsElapsed.ToString()));
sb.AppendLine(String.Concat(" Flags (flags) : 0x", ByteUtility.PrintBytes(this._flags)));
sb.AppendLine(String.Concat(" Is Broadcast (flags) : ", this.IsBroadcast.ToString()));
sb.AppendLine(String.Concat(" Client Address (ciaddr) : ", this.ClientAddress.ToString()));
sb.AppendLine(String.Concat(" Assigned Address (yiaddr) : ", this.AssignedAddress.ToString()));
sb.AppendLine(String.Concat(" Next Server Address (siaddr) : ", this.NextServerAddress.ToString()));
sb.AppendLine(String.Concat(" Relay Agent Address (giaddr) : ", this.RelayAgentAddress.ToString()));
sb.AppendLine(String.Concat(" Hardware Address (chaddr) : ", this.ClientHardwareAddress.ToString()));
sb.AppendLine(String.Concat(" Server Host Name (sname) : ", ByteUtility.GetSafeString(this.ServerName)));
sb.AppendLine(String.Concat(" Boot File Name (file) : ", ByteUtility.GetSafeString(this.BootFileName)));
sb.AppendLine(String.Concat(" Option (Message Type) : ", MessageTypeString.GetName((MessageType)this.GetOptionData(DhcpOption.DhcpMessageType)[0])));
sb.AppendLine(String.Concat(" Option (Client Id) : ", ByteUtility.PrintSafeBytes(this.GetOptionData(DhcpOption.ClientId))));
sb.AppendLine(String.Concat(" Option (Host Name) : ", ByteUtility.GetSafeString(this.GetOptionData(DhcpOption.Hostname))));
sb.AppendLine(String.Concat(" Option (Address Request) : ", new InternetAddress(this.GetOptionData(DhcpOption.AddressRequest)).ToString()));
sb.AppendLine(String.Concat(" Option (Server Identifier) : ", new InternetAddress(this.GetOptionData(DhcpOption.ServerIdentifier)).ToString()));
sb.AppendLine(String.Concat(" Option (Dhcp Message) : ", ByteUtility.GetSafeString(this.GetOptionData(DhcpOption.DhcpMessage))));
foreach (DhcpOption option in _options.Keys)
{
byte optionId = (Byte)option;
byte[] optionValue = (byte[])_options[option];
sb.AppendLine(String.Concat(" Option (Binary) : ", ByteUtility.PrintByte(optionId) + " => " + ByteUtility.PrintBytes(optionValue, false)));
}
sb.AppendLine();
return(sb.ToString());
}
/// <summary>
/// Gets the DHCP option string.
/// </summary>
/// <param name="dhcpOption">The DHCP option.</param>
/// <param name="dhcpOptionValue">The DHCP option value.</param>
/// <param name="dhcpRequestListFormat">The DHCP request list format.</param>
/// <param name="logger">The logger.</param>
/// <returns>System.String.</returns>
/// <autogeneratedoc />
public static string GetDhcpOptionString(
DhcpOption dhcpOption, byte[] dhcpOptionValue,
DhcpRequestListFormat dhcpRequestListFormat = DhcpRequestListFormat.StringNewlineIndentedSeparated,
IPureLogger logger = null
)
{
try
{
if (dhcpOptionValue == null)
{
return("Null");
}
if (dhcpOption == DhcpOption.ParamReqList)
{
return(GetDhcpRequestListString(dhcpOptionValue, dhcpRequestListFormat, logger));
}
switch (DhcpOptionTypes[dhcpOption])
{
case DhcpOptionType.IPAddress:
return(new IPAddress(dhcpOptionValue).ToString());
case DhcpOptionType.PhysicalAddressSkip1DashString:
return(new PhysicalAddress(dhcpOptionValue.Skip(1).ToArray()).ToDashString());
case DhcpOptionType.PhysicalAddressSkip1ColonString:
return(new PhysicalAddress(dhcpOptionValue.Skip(1).ToArray()).ToColonString());
case DhcpOptionType.PhysicalAddressDashString:
return(new PhysicalAddress(dhcpOptionValue).ToDashString());
case DhcpOptionType.PhysicalAddressColonString:
return(new PhysicalAddress(dhcpOptionValue).ToColonString());
case DhcpOptionType.MessageTypeString:
return(MessageTypeString.GetName((MessageType)dhcpOptionValue[0]));
case DhcpOptionType.SafeString:
return(ByteUtility.GetSafeString(dhcpOptionValue));
case DhcpOptionType.SafeBytes:
return(ByteUtility.PrintSafeBytes(dhcpOptionValue));
case DhcpOptionType.UInt16:
return(BitConverter.ToUInt16(dhcpOptionValue, 0).ToString());
case DhcpOptionType.UInt32:
return(BitConverter.ToUInt32(dhcpOptionValue, 0).ToString());
case DhcpOptionType.UInt16Network:
return(IPAddress.NetworkToHostOrder(BitConverter.ToUInt16(dhcpOptionValue, 0)).ToString());
case DhcpOptionType.UInt32Network:
return(IPAddress.NetworkToHostOrder(BitConverter.ToUInt32(dhcpOptionValue, 0)).ToString());
}
}
catch (Exception ex)
{
logger?.LogError(ex, "Invalid DhcpOption: {dhcpOption}", dhcpOption);
}
return(string.Empty);
}
/// <summary>
/// Send NAK message back to remote client.
/// </summary>
private void SendNak(DhcpMessageEventArgs args)
{
// Set options
args.ResponseMessage.AddOption(DhcpOption.DhcpMessageType, (Byte)MessageType.Nak);
Logger.WriteInfo(this, "NAK (Negative Acknowledge) for message id " + args.RequestMessage.SessionId.ToHexString("0x") + " sent on thread(#" +
Thread.CurrentThread.ManagedThreadId + ")" + " with option message: " + ByteUtility.GetSafeString(args.ResponseMessage.GetOptionData(DhcpOption.DhcpMessage)));
this.SendReply(args);
}
