/** @file
    Display the DHCP options

    Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>
    SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <WebServer.h>
#include <Guid/DxeServices.h>
#include <Pi/PiDxeCis.h>

#include <Protocol/Dhcp4.h>
#include <Protocol/ServiceBinding.h>

/**
  Respond with the DHCP options

  @param[in]  SocketFD      The socket's file descriptor to add to the list.
  @param[in]  pPort         The WSDT_PORT structure address
  @param[out] pbDone        Address to receive the request completion status

  @retval EFI_SUCCESS       The request was successfully processed

**/
EFI_STATUS
DhcpOptionsPage (
  IN int SocketFD,
  IN WSDT_PORT * pPort,
  OUT BOOLEAN * pbDone
  )
{
//  EFI_HANDLE Dhcp4Handle;
  EFI_DHCP4_MODE_DATA Dhcp4Mode;
  UINTN HandleCount;
  EFI_DHCP4_PROTOCOL * pDhcp4;
  EFI_DHCP4_PACKET * pDhcp4Packet;
  EFI_HANDLE * pEnd;
  EFI_HANDLE * pHandle;
//  EFI_SERVICE_BINDING_PROTOCOL * pService;
  EFI_STATUS Status;

  DBG_ENTER ( );

  //
  //  Send the DHCP options
  //
  for ( ; ; ) {
    //
    //  Send the page header
    //
    Status = HttpPageHeader ( SocketFD, pPort, L"DHCP Options" );
    if ( EFI_ERROR ( Status )) {
      break;
    }

    //
    //  Build the header
    //
    Status = HttpSendAnsiString ( SocketFD,
                                  pPort,
                                  "<h1>" );
    if ( EFI_ERROR ( Status )) {
      break;
    }
    Status = HttpSendUnicodeString ( SocketFD,
                                     pPort,
                                     L"DHCP Options" );
    if ( EFI_ERROR ( Status )) {
      break;
    }
    Status = HttpSendAnsiString ( SocketFD,
                                  pPort,
                                  "</h1>\r\n" );
    if ( EFI_ERROR ( Status )) {
      break;
    }

    //
    //  Attempt to locate DHCP clients
    //
    Status = gBS->LocateHandleBuffer ( ByProtocol,
//                                       &gEfiDhcp4ServiceBindingProtocolGuid,
                                       &gEfiDhcp4ProtocolGuid,
                                       NULL,
                                       &HandleCount,
                                       &pHandle );
    if ( EFI_ERROR ( Status )) {
      Status = HttpSendAnsiString ( SocketFD,
                                    pPort,
                                    "DHCP not in use" );
      if ( EFI_ERROR ( Status )) {
        break;
      }
    }
    else {
      //
      //  Walk the list of handles
      //
      pEnd = &pHandle [ HandleCount ];
      while ( pEnd > pHandle ) {
/*
        //
        //  Get the DHCP service binding
        //
        Status = gBS->OpenProtocol ( *pHandle,
                                      &gEfiDhcp4ServiceBindingProtocolGuid,
                                      &pService,
                                      NULL,
                                      gImageHandle,
                                      EFI_OPEN_PROTOCOL_GET_PROTOCOL );
        if ( EFI_ERROR ( Status )) {
          Status = HttpSendAnsiString ( SocketFD,
                                        pPort,
                                        "Failed to open gEfiDhcp4ServiceBindingProtocolGuid" );
          break;
        }

        //
        //  Get the DHCP handle
        //
        Status = pService->CreateChild ( pService,
                                         &Dhcp4Handle );
        if ( EFI_ERROR ( Status )) {
          Status = HttpSendAnsiString ( SocketFD,
                                        pPort,
                                        "Failed to create DHCP4 child" );
        }
        else {
*/
          //
          //  Get the DHCP protocol
          //
          Status = gBS->OpenProtocol ( *pHandle,
//                                       Dhcp4Handle,
                                       &gEfiDhcp4ProtocolGuid,
                                       (VOID **)&pDhcp4,
                                       NULL,
                                       gImageHandle,
                                       EFI_OPEN_PROTOCOL_GET_PROTOCOL );
          if ( EFI_ERROR ( Status )) {
            Status = HttpSendAnsiString ( SocketFD,
                                          pPort,
                                          "Failed to open gEfiDhcp4ProtocolGuid" );
          }
          else {
            //
            //  Get the DHCP packet
            //
            Status = pDhcp4->GetModeData ( pDhcp4,
                                           &Dhcp4Mode );
            if ( EFI_ERROR ( Status )) {
              Status = HttpSendAnsiString ( SocketFD,
                                            pPort,
                                            "Failed to get DHCP4 mode" );
            }
            else {
              //
              //  Get the last packet
              //
              pDhcp4Packet = Dhcp4Mode.ReplyPacket;
              if ( NULL == pDhcp4Packet ) {
                Status = HttpSendAnsiString ( SocketFD,
                                              pPort,
                                              "No DHCP reply received!<br/>DHCP Mode:<br/>" );
                if ( EFI_ERROR ( Status )) {
                  break;
                }

                //
                //  Display the DHCP mode data
                //
                Status = HttpSendDump ( SocketFD,
                                        pPort,
                                        sizeof ( Dhcp4Mode ),
                                        (UINT8 *)&Dhcp4Mode );
              }
              else {
                //
                //  Display the DHCP packet
                //
                Status = HttpSendDump ( SocketFD,
                                        pPort,
                                        pDhcp4Packet->Length,
                                        (UINT8 *)&pDhcp4Packet->Dhcp4 );
              }
            }
/*
          }

          //
          //  Done with the DHCP protocol
          //
          pService->DestroyChild ( pService,
                                   Dhcp4Handle );
*/
        }

        //
        //  Set the next service binding
        //
        pHandle += 1;
      }
    }

    //
    //  Send the page trailer
    //
    Status = HttpPageTrailer ( SocketFD, pPort, pbDone );
    break;
  }

  //
  //  Return the operation status
  //
  DBG_EXIT_STATUS ( Status );
  return Status;
}