/** @file
  Main file for EfiDecompress shell Debug1 function.

  (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
  Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "UefiShellDebug1CommandsLib.h"
#include <Protocol/Decompress.h>


/**
  Function for 'decompress' 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
ShellCommandRunEfiDecompress (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS          Status;
  LIST_ENTRY          *Package;
  CHAR16              *ProblemParam;
  SHELL_STATUS        ShellStatus;
  SHELL_FILE_HANDLE   InFileHandle;
  SHELL_FILE_HANDLE   OutFileHandle;
  UINT32              OutSize;
  UINTN               OutSizeTemp;
  VOID                *OutBuffer;
  UINTN               InSize;
  VOID                *InBuffer;
  CHAR16              *InFileName;
  CONST CHAR16        *OutFileName;
  UINT64              Temp64Bit;
  UINT32              ScratchSize;
  VOID                *ScratchBuffer;
  EFI_DECOMPRESS_PROTOCOL *Decompress;
  CONST CHAR16        *TempParam;

  InFileName          = NULL;
  OutFileName         = NULL;
  OutSize             = 0;
  ScratchSize         = 0;
  ShellStatus         = SHELL_SUCCESS;
  Status              = EFI_SUCCESS;
  OutBuffer           = NULL;
  InBuffer            = NULL;
  ScratchBuffer       = NULL;
  InFileHandle        = NULL;
  OutFileHandle       = NULL;
  Decompress          = NULL;

  //
  // initialize the shell lib (we must be in non-auto-init...)
  //
  Status = ShellInitialize();
  ASSERT_EFI_ERROR(Status);

  Status = CommandInit();
  ASSERT_EFI_ERROR(Status);

  //
  // parse the command line
  //
  Status = ShellCommandLineParse (EmptyParamList, &Package, &ProblemParam, TRUE);
  if (EFI_ERROR(Status)) {
    if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellDebug1HiiHandle, L"efidecompress", ProblemParam);
      FreePool(ProblemParam);
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      ASSERT(FALSE);
    }
  } else {
    if (ShellCommandLineGetCount(Package) > 3) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellDebug1HiiHandle, L"efidecompress");
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else if (ShellCommandLineGetCount(Package) < 3) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellDebug1HiiHandle, L"efidecompress");
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      TempParam = ShellCommandLineGetRawValue(Package, 1);
      ASSERT(TempParam != NULL);
      InFileName = ShellFindFilePath(TempParam);
      OutFileName = ShellCommandLineGetRawValue(Package, 2);
      if (InFileName == NULL) {
        ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_FILE_FIND_FAIL), gShellDebug1HiiHandle, L"efidecompress", TempParam);
        ShellStatus = SHELL_NOT_FOUND;
      } else {
        if (ShellIsDirectory(InFileName) == EFI_SUCCESS){
          ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_FILE_NOT_DIR), gShellDebug1HiiHandle, L"efidecompress", InFileName);
          ShellStatus = SHELL_INVALID_PARAMETER;
        }
        if (ShellIsDirectory(OutFileName) == EFI_SUCCESS){
          ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_FILE_NOT_DIR), gShellDebug1HiiHandle, L"efidecompress", OutFileName);
          ShellStatus = SHELL_INVALID_PARAMETER;
        }
        if (ShellStatus == SHELL_SUCCESS) {
          Status = ShellOpenFileByName(InFileName, &InFileHandle, EFI_FILE_MODE_READ, 0);
          if (EFI_ERROR(Status)) {
            ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_FILE_OPEN_FAIL), gShellDebug1HiiHandle, L"efidecompress", ShellCommandLineGetRawValue(Package, 1));
            ShellStatus = SHELL_NOT_FOUND;
          }
        }

        if (ShellStatus == SHELL_SUCCESS) {
          Status = FileHandleGetSize(InFileHandle, &Temp64Bit);
          ASSERT(Temp64Bit <= (UINT32)(-1));
          InSize = (UINTN)Temp64Bit;
          ASSERT_EFI_ERROR(Status);
          InBuffer = AllocateZeroPool(InSize);
          if (InBuffer == NULL) {
            Status = EFI_OUT_OF_RESOURCES;
          } else {
            Status = gEfiShellProtocol->ReadFile (InFileHandle, &InSize, InBuffer);
            ASSERT_EFI_ERROR (Status);

            Status = gBS->LocateProtocol (&gEfiDecompressProtocolGuid, NULL, (VOID**) &Decompress);
            ASSERT_EFI_ERROR (Status);

            Status = Decompress->GetInfo (Decompress, InBuffer, (UINT32) InSize, &OutSize, &ScratchSize);
          }

          if (EFI_ERROR(Status) || OutSize == 0) {
            ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_EFI_DECOMPRESS_NOPE), gShellDebug1HiiHandle, InFileName);
            ShellStatus = SHELL_NOT_FOUND;
          } else {
            Status = ShellOpenFileByName(OutFileName, &OutFileHandle, EFI_FILE_MODE_READ|EFI_FILE_MODE_WRITE|EFI_FILE_MODE_CREATE, 0);
            if (EFI_ERROR(Status)) {
              ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_FILE_OPEN_FAIL), gShellDebug1HiiHandle, ShellCommandLineGetRawValue(Package, 2), Status);
              ShellStatus = SHELL_NOT_FOUND;
            } else {
              OutBuffer = AllocateZeroPool(OutSize);
              ScratchBuffer = AllocateZeroPool(ScratchSize);
              if (OutBuffer == NULL || ScratchBuffer == NULL) {
                Status = EFI_OUT_OF_RESOURCES;
              } else {
                Status = Decompress->Decompress (Decompress, InBuffer, (UINT32) InSize, OutBuffer, OutSize, ScratchBuffer, ScratchSize);
              }
            }
          }

          if (EFI_ERROR (Status)) {
            ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_EFI_DECOMPRESS_FAIL), gShellDebug1HiiHandle, Status);
            ShellStatus = ((Status == EFI_OUT_OF_RESOURCES) ? SHELL_OUT_OF_RESOURCES : SHELL_DEVICE_ERROR);
          } else {
            OutSizeTemp = OutSize;
            Status = gEfiShellProtocol->WriteFile (OutFileHandle, &OutSizeTemp, OutBuffer);
            OutSize = (UINT32) OutSizeTemp;
            if (EFI_ERROR (Status)) {
              ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_FILE_WRITE_FAIL), gShellDebug1HiiHandle, L"efidecompress", OutFileName, Status);
              ShellStatus = SHELL_DEVICE_ERROR;
            }
          }
        }
      }
    }

    ShellCommandLineFreeVarList (Package);
  }
  if (InFileHandle != NULL) {
    gEfiShellProtocol->CloseFile(InFileHandle);
  }
  if (OutFileHandle != NULL) {
    gEfiShellProtocol->CloseFile(OutFileHandle);
  }

  SHELL_FREE_NON_NULL(InFileName);
  SHELL_FREE_NON_NULL(InBuffer);
  SHELL_FREE_NON_NULL(OutBuffer);
  SHELL_FREE_NON_NULL(ScratchBuffer);

  return (ShellStatus);
}