/// <summary>
/// Processes the discover.
/// </summary>
/// <param name="dhcpMessage">The DHCP message.</param>
/// <returns>DhcpMessageProcessed.</returns>
/// <autogeneratedoc />
public DhcpMessageProcessed ProcessDiscover(IDhcpMessage dhcpMessage)
{
_dhcpSessionResult.UpdateSessionState(dhcpMessage.SessionId, DhcpSessionState.Discover, dhcpMessage.ClientHardwareAddress);
UpdateTimestamp();
return(DhcpMessageProcessed.Success);
}
/// <summary>
/// Processes the ack.
/// </summary>
/// <param name="dhcpMessage">The DHCP message.</param>
/// <returns>DhcpMessageProcessed.</returns>
/// <autogeneratedoc />
public DhcpMessageProcessed ProcessAck(IDhcpMessage dhcpMessage)
{
UpdateTimestamp();
return(DhcpMessageProcessed.Ignored);
}
/// <summary>
/// Processes the request.
/// </summary>
/// <param name="dhcpMessage">The DHCP message.</param>
/// <returns>DhcpMessageProcessed.</returns>
/// <autogeneratedoc />
public DhcpMessageProcessed ProcessRequest(IDhcpMessage dhcpMessage)
{
if (_dhcpSessionResult.IsDuplicateRequest(dhcpMessage))
{
return(DhcpMessageProcessed.Duplicate);
}
// Update Session State
_dhcpSessionResult.UpdateSessionState(dhcpMessage.SessionId, DhcpSessionState.Request,
dhcpMessage.ClientHardwareAddress);
var addressRequest = dhcpMessage.GetOptionData(DhcpOption.RequestedIpAddr);
RequestState requestState; // RequestState.Unknown
#region Pre-Processing
// Start pre-process validation
//---------------------------------------------------------------------
//| |INIT-REBOOT |SELECTING |RENEWING |REBINDING |
//---------------------------------------------------------------------
//|broad/unicast |broadcast |broadcast |unicast |broadcast |
//|server-ip |MUST NOT |MUST |MUST NOT |MUST NOT |
//|requested-ip |MUST |MUST |MUST NOT |MUST NOT |
//|ciaddr |zero |zero |IP address |IP address|
//---------------------------------------------------------------------
// first determine what KIND of request we are dealing with
if (dhcpMessage.ClientAddress.Equals(InternetAddress.Any))
{
// the ciAddr MUST be 0.0.0.0 for Init-Reboot and Selecting
requestState = addressRequest == null ? RequestState.InitReboot : RequestState.Selecting;
}
else
{
// the ciAddr MUST NOT be 0.0.0.0 for Renew and Rebind
if (!dhcpMessage.IsBroadcast)
{
// renew is unicast
// NOTE: this will not happen if the v4 broadcast interface used at startup,
// but handling of DHCPv4 renew/rebind is the same anyway
requestState = RequestState.Renewing;
}
else
{
// rebind is broadcast
requestState = RequestState.Rebinding;
}
}
if (requestState == RequestState.InitReboot || requestState == RequestState.Selecting)
{
if (addressRequest == null)
{
Logger.LogDebug(
"Ignoring {DhcpMessageType} {DhcpRequestState} message: Requested IP option is null",
MessageType.Request, RequestStateString.GetName(requestState));
//return; // if processing should not continue
}
}
else
{
// type == Renewing or Rebinding
if (addressRequest != null)
{
Logger.LogDebug(
"Ignoring {DhcpMessageType} {DhcpRequestState} message: Requested IP option is not null",
MessageType.Request, RequestStateString.GetName(requestState));
//return; // if processing should not continue
}
}
// End pre-process validation
#endregion Pre-Processing
Logger.LogTrace("Processing {DhcpMessageType} {DhcpRequestState} message", MessageType.Request,
RequestStateString.GetName(requestState));
DhcpSessionState = DhcpSessionState.Request;
RequestState = requestState;
if (!dhcpMessage.ClientHardwareAddress.Equals(PhysicalAddress))
{
Logger.LogError(
"ClientHardwareAddress {ClientHardwareAddress} does not equal PhysicalAddress {PhysicalAddress}",
dhcpMessage.ClientHardwareAddress, PhysicalAddress);
}
// Update Hostname
_dhcpSessionResult.HostName =
ByteUtility.GetStringNullIfEmpty(dhcpMessage.GetOptionData(DhcpOption.Hostname));
_dhcpSessionResult.VendorClassId =
ByteUtility.GetStringNullIfEmpty(dhcpMessage.GetOptionData(DhcpOption.VendorClassId));
bool routerDiscoveryParamExists = dhcpMessage.ParamOptionExists(DhcpOption.RouterDiscovery);
// Figure out INetworkDeviceInfo
if (routerDiscoveryParamExists)
{
}
// TODO: Handle DhcpRequest
UpdateTimestamp();
return(DhcpMessageProcessed.Success);
}
