/** @file
  Main file for EfiCompress 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 "Compress.h"

/**
  Function for 'compress' 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
ShellCommandRunEfiCompress (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS         Status;
  LIST_ENTRY         *Package;
  CHAR16             *ProblemParam;
  SHELL_STATUS       ShellStatus;
  SHELL_FILE_HANDLE  InShellFileHandle;
  SHELL_FILE_HANDLE  OutShellFileHandle;
  UINT64             OutSize;
  UINTN              OutSize2;
  VOID               *OutBuffer;
  UINT64             InSize;
  UINTN              InSize2;
  VOID               *InBuffer;
  CHAR16             *InFileName;
  CONST CHAR16       *OutFileName;
  CONST CHAR16       *TempParam;

  InFileName         = NULL;
  OutFileName        = NULL;
  OutSize            = 0;
  ShellStatus        = SHELL_SUCCESS;
  Status             = EFI_SUCCESS;
  OutBuffer          = NULL;
  InShellFileHandle  = NULL;
  OutShellFileHandle = NULL;
  InBuffer           = NULL;
  Package            = 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)) {
      ShellPrintHiiDefaultEx (STRING_TOKEN (STR_GEN_PROBLEM), gShellDebug1HiiHandle, L"eficompress", ProblemParam);
      FreePool (ProblemParam);
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      ASSERT (FALSE);
    }
  } else {
    if (ShellCommandLineGetCount (Package) > 3) {
      ShellPrintHiiDefaultEx (STRING_TOKEN (STR_GEN_TOO_MANY), gShellDebug1HiiHandle, L"eficompress");
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else if (ShellCommandLineGetCount (Package) < 3) {
      ShellPrintHiiDefaultEx (STRING_TOKEN (STR_GEN_TOO_FEW), gShellDebug1HiiHandle, L"eficompress");
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      TempParam = ShellCommandLineGetRawValue (Package, 1);
      if (TempParam == NULL) {
        ASSERT (TempParam != NULL);
        ShellPrintHiiDefaultEx (STRING_TOKEN (STR_GEN_PARAM_INV), gShellDebug1HiiHandle, L"eficompress");
        ShellStatus = SHELL_INVALID_PARAMETER;
        goto Exit;
      }

      InFileName  = ShellFindFilePath (TempParam);
      OutFileName = ShellCommandLineGetRawValue (Package, 2);
      if ((InFileName == NULL) || (OutFileName == NULL)) {
        ShellPrintHiiDefaultEx (STRING_TOKEN (STR_FILE_FIND_FAIL), gShellDebug1HiiHandle, L"eficompress", TempParam);
        ShellStatus = SHELL_NOT_FOUND;
      } else {
        if (ShellIsDirectory (InFileName) == EFI_SUCCESS) {
          ShellPrintHiiDefaultEx (STRING_TOKEN (STR_FILE_NOT_DIR), gShellDebug1HiiHandle, L"eficompress", InFileName);
          ShellStatus = SHELL_INVALID_PARAMETER;
        }

        if (ShellIsDirectory (OutFileName) == EFI_SUCCESS) {
          ShellPrintHiiDefaultEx (STRING_TOKEN (STR_FILE_NOT_DIR), gShellDebug1HiiHandle, L"eficompress", OutFileName);
          ShellStatus = SHELL_INVALID_PARAMETER;
        }

        if (ShellStatus == SHELL_SUCCESS) {
          Status = ShellOpenFileByName (InFileName, &InShellFileHandle, EFI_FILE_MODE_READ, 0);
          if (EFI_ERROR (Status)) {
            ShellPrintHiiDefaultEx (STRING_TOKEN (STR_GEN_FILE_OPEN_FAIL), gShellDebug1HiiHandle, L"eficompress", ShellCommandLineGetRawValue (Package, 1));
            ShellStatus = SHELL_NOT_FOUND;
          }

          Status = ShellOpenFileByName (OutFileName, &OutShellFileHandle, EFI_FILE_MODE_READ|EFI_FILE_MODE_WRITE|EFI_FILE_MODE_CREATE, 0);
          if (EFI_ERROR (Status)) {
            ShellPrintHiiDefaultEx (STRING_TOKEN (STR_GEN_FILE_OPEN_FAIL), gShellDebug1HiiHandle, L"eficompress", ShellCommandLineGetRawValue (Package, 2));
            ShellStatus = SHELL_NOT_FOUND;
          }
        }

        if (ShellStatus == SHELL_SUCCESS) {
          Status = gEfiShellProtocol->GetFileSize (InShellFileHandle, &InSize);
          ASSERT_EFI_ERROR (Status);
          InBuffer = AllocateZeroPool ((UINTN)InSize);
          if (InBuffer == NULL) {
            Status = EFI_OUT_OF_RESOURCES;
          } else {
            InSize2 = (UINTN)InSize;
            Status  = gEfiShellProtocol->ReadFile (InShellFileHandle, &InSize2, InBuffer);
            InSize  = InSize2;
            ASSERT_EFI_ERROR (Status);
            Status = Compress (InBuffer, InSize, OutBuffer, &OutSize);
            if (Status == EFI_BUFFER_TOO_SMALL) {
              OutBuffer = AllocateZeroPool ((UINTN)OutSize);
              if (OutBuffer == NULL) {
                Status = EFI_OUT_OF_RESOURCES;
              } else {
                Status = Compress (InBuffer, InSize, OutBuffer, &OutSize);
              }
            }
          }

          if (EFI_ERROR (Status)) {
            ShellPrintHiiDefaultEx (STRING_TOKEN (STR_EFI_COMPRESS_FAIL), gShellDebug1HiiHandle, Status);
            ShellStatus = ((Status == EFI_OUT_OF_RESOURCES) ? SHELL_OUT_OF_RESOURCES : SHELL_DEVICE_ERROR);
          } else {
            OutSize2 = (UINTN)OutSize;
            Status   = gEfiShellProtocol->WriteFile (OutShellFileHandle, &OutSize2, OutBuffer);
            if (EFI_ERROR (Status)) {
              ShellPrintHiiDefaultEx (STRING_TOKEN (STR_FILE_WRITE_FAIL), gShellDebug1HiiHandle, L"eficompress", OutFileName);
              ShellStatus = SHELL_DEVICE_ERROR;
            }
          }
        }
      }
    }

    ShellCommandLineFreeVarList (Package);
  }

Exit:
  if ((ShellStatus != SHELL_SUCCESS) && (Package != NULL)) {
    ShellCommandLineFreeVarList (Package);
  }

  if (InShellFileHandle != NULL) {
    gEfiShellProtocol->CloseFile (InShellFileHandle);
  }

  if (OutShellFileHandle != NULL) {
    gEfiShellProtocol->CloseFile (OutShellFileHandle);
  }

  SHELL_FREE_NON_NULL (InFileName);
  SHELL_FREE_NON_NULL (InBuffer);
  SHELL_FREE_NON_NULL (OutBuffer);

  return (ShellStatus);
}