/** @file
  Main file for devices shell Driver1 function.

  (C) Copyright 2012-2015 Hewlett-Packard Development Company, L.P.<BR>
  Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>
  This program and the accompanying materials
  are licensed and made available under the terms and conditions of the BSD License
  which accompanies this distribution.  The full text of the license may be found at
  http://opensource.org/licenses/bsd-license.php

  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#include "UefiShellDriver1CommandsLib.h"

/**
  Get lots of info about a device from its handle.

  @param[in] TheHandle       The device handle to get info on.
  @param[in, out] Type       On successful return R, B, or D (root, bus, or 
                             device) will be placed in this buffer.
  @param[in, out] Cfg        On successful return this buffer will be 
                             TRUE if the handle has configuration, FALSE
                             otherwise.
  @param[in, out] Diag       On successful return this buffer will be 
                             TRUE if the handle has disgnostics, FALSE
                             otherwise.
  @param[in, out] Parents    On successful return this buffer will be 
                             contain the number of parent handles.
  @param[in, out] Devices    On successful return this buffer will be 
                             contain the number of devices controlled.
  @param[in, out] Children   On successful return this buffer will be 
                             contain the number of child handles.
  @param[out] Name           The pointer to a buffer that will be allocated
                             and contain the string name of the handle.
                             The caller must free this memory.
  @param[in] Language        The language code as defined by the UEFI spec.

  @retval EFI_SUCCESS           The info is there.
  @retval EFI_INVALID_PARAMETER A parameter was invalid.
**/
EFI_STATUS
GetDeviceHandleInfo (
  IN EFI_HANDLE   TheHandle,
  IN OUT CHAR16   *Type,
  IN OUT BOOLEAN  *Cfg,
  IN OUT BOOLEAN  *Diag,
  IN OUT UINTN    *Parents,
  IN OUT UINTN    *Devices,
  IN OUT UINTN    *Children,
  OUT CHAR16      **Name,
  IN CONST CHAR8  *Language
  )
{
  EFI_STATUS    Status;
  EFI_HANDLE    *HandleBuffer;
  UINTN         Count;

  if (TheHandle == NULL 
    || Type == NULL
    || Cfg == NULL
    || Diag == NULL
    || Parents == NULL
    || Devices == NULL
    || Children == NULL
    || Name == NULL ) {
    return (EFI_INVALID_PARAMETER);
  }

  *Cfg          = FALSE;
  *Diag         = FALSE;
  *Children     = 0;
  *Parents      = 0;
  *Devices      = 0;
  *Type         = L' ';
  *Name         = CHAR_NULL;
  HandleBuffer  = NULL;
  Status        = EFI_SUCCESS;

  gEfiShellProtocol->GetDeviceName(TheHandle, EFI_DEVICE_NAME_USE_COMPONENT_NAME|EFI_DEVICE_NAME_USE_DEVICE_PATH, (CHAR8*)Language, Name);

  Status = ParseHandleDatabaseForChildControllers(TheHandle, Children, NULL);
//  if (!EFI_ERROR(Status)) {
    Status = PARSE_HANDLE_DATABASE_PARENTS(TheHandle, Parents, NULL);
    if (/*!EFI_ERROR(Status) && */Parents != NULL && Children != NULL) {
      if (*Parents == 0) {
        *Type = L'R';
      } else if (*Children > 0) {
        *Type = L'B';
      } else {
        *Type = L'D';
      }
    }
//  }
  Status = PARSE_HANDLE_DATABASE_UEFI_DRIVERS(TheHandle, Devices, &HandleBuffer);
  if (!EFI_ERROR(Status) && Devices != NULL && HandleBuffer != NULL) {
    for (Count = 0 ; Count < *Devices ; Count++) {
      if (!EFI_ERROR(gBS->OpenProtocol(HandleBuffer[Count], &gEfiDriverConfigurationProtocolGuid, NULL, NULL, gImageHandle, EFI_OPEN_PROTOCOL_TEST_PROTOCOL))) {
        *Cfg = TRUE;
      }
      if (!EFI_ERROR(gBS->OpenProtocol(HandleBuffer[Count], &gEfiDriverDiagnosticsProtocolGuid, NULL, NULL, gImageHandle, EFI_OPEN_PROTOCOL_TEST_PROTOCOL))) {
        *Diag = TRUE;
      }
      if (!EFI_ERROR(gBS->OpenProtocol(HandleBuffer[Count], &gEfiDriverDiagnostics2ProtocolGuid, NULL, NULL, gImageHandle, EFI_OPEN_PROTOCOL_TEST_PROTOCOL))) {
        *Diag = TRUE;
      }
    }
    SHELL_FREE_NON_NULL(HandleBuffer);
  }

  return (Status);
}

STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
  {L"-sfo", TypeFlag},
  {L"-l", TypeValue},
  {NULL, TypeMax}
  };

/**
  Function for 'devices' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunDevices (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS          Status;
  LIST_ENTRY          *Package;
  CHAR16              *ProblemParam;
  SHELL_STATUS        ShellStatus;
  CHAR8               *Language;
  EFI_HANDLE          *HandleList;
  EFI_HANDLE          *HandleListWalker;
  CHAR16              Type;
  BOOLEAN             Cfg;
  BOOLEAN             Diag;
  UINTN               Parents;
  UINTN               Devices;
  UINTN               Children;
  CHAR16              *Name;
  CONST CHAR16        *Lang;
  BOOLEAN             SfoFlag;

  ShellStatus         = SHELL_SUCCESS;
  Language            = NULL;
  SfoFlag             = FALSE;

  //
  // initialize the shell lib (we must be in non-auto-init...)
  //
  Status = ShellInitialize();
//  ASSERT_EFI_ERROR(Status);

  Status = CommandInit();
//  ASSERT_EFI_ERROR(Status);
  if (EFI_ERROR(Status)) {

    return SHELL_UNSUPPORTED;
  }

  //
  // parse the command line
  //
  Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
  if (EFI_ERROR(Status)) {
    if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellDriver1HiiHandle, L"devices", ProblemParam);  
      FreePool(ProblemParam);
      ShellStatus = SHELL_INVALID_PARAMETER;
    } /* else {
      ASSERT(FALSE);
    } */
  } else {
    //
    // if more than 0 'value' parameters  we have too many parameters
    //
    if (ShellCommandLineGetRawValue(Package, 1) != NULL){
      //
      // error for too many parameters
      //
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellDriver1HiiHandle, L"devices");  
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      //
      // get the language if necessary
      //
      Lang = ShellCommandLineGetValue(Package, L"-l");
      if (Lang != NULL) {
        Language = AllocateZeroPool(StrSize(Lang));
        AsciiSPrint(Language, StrSize(Lang), "%S", Lang);
      } else if (!ShellCommandLineGetFlag(Package, L"-l")){
        ASSERT(Language == NULL);
//        Language = AllocateZeroPool(10);
//        AsciiSPrint(Language, 10, "en-us");
      } else {
        ASSERT(Language == NULL);
        ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_NO_VALUE), gShellDriver1HiiHandle, L"devices",  L"-l");  
        ShellCommandLineFreeVarList (Package);
        return (SHELL_INVALID_PARAMETER);
      }


      //
      // Print Header

      //
      if (ShellCommandLineGetFlag (Package, L"-sfo")) {
        ShellPrintHiiEx (-1, -1, Language, STRING_TOKEN (STR_GEN_SFO_HEADER), gShellDriver1HiiHandle, L"devices");
        SfoFlag = TRUE;
      } else {
        ShellPrintHiiEx (-1, -1, Language, STRING_TOKEN (STR_DEVICES_HEADER_LINES), gShellDriver1HiiHandle);
      }

      //
      // loop through each handle
      //
      HandleList = GetHandleListByProtocol(NULL);
      ASSERT(HandleList != NULL);
      for (HandleListWalker = HandleList
        ;  HandleListWalker != NULL && *HandleListWalker != NULL /*&& !EFI_ERROR(Status)*/
        ;  HandleListWalker++
       ){

        //
        // get all the info on each handle
        //
        Name = NULL;
        Status = GetDeviceHandleInfo(*HandleListWalker, &Type, &Cfg, &Diag, &Parents, &Devices, &Children, &Name, Language);
        if (Name != NULL && (Parents != 0 || Devices != 0 || Children != 0)) {
          ShellPrintHiiEx (
            -1,
            -1,
            Language,
            SfoFlag?STRING_TOKEN (STR_DEVICES_ITEM_LINE_SFO):STRING_TOKEN (STR_DEVICES_ITEM_LINE),
            gShellDriver1HiiHandle,
            ConvertHandleToHandleIndex (*HandleListWalker),
            Type,
            Cfg?(SfoFlag?L'Y':L'X'):(SfoFlag?L'N':L'-'),
            Diag?(SfoFlag?L'Y':L'X'):(SfoFlag?L'N':L'-'),
            Parents,
            Devices,
            Children,
            Name!=NULL?Name:L"<UNKNOWN>");
        }
        if (Name != NULL) {
          FreePool(Name);
        }
        if (ShellGetExecutionBreakFlag ()) {
          ShellStatus = SHELL_ABORTED;
          break;
        }
        
      }

      if (HandleList != NULL) {
        FreePool(HandleList);
      }
 
    }
    SHELL_FREE_NON_NULL(Language);
    ShellCommandLineFreeVarList (Package);
  }
  return (ShellStatus);
}