Renormalized end-of-lines from master@27b044605cd5f6b33a3d231576003850b3fe305btrunk

1 files changed, 1504 insertions, 1504 deletions

diff --git a/ShellPkg/Application/Shell/ShellParametersProtocol.c b/ShellPkg/Application/Shell/ShellParametersProtocol.c
index 64d67d9f13..7cd2f9088b 100644
--- a/ShellPkg/Application/Shell/ShellParametersProtocol.c
+++ b/ShellPkg/Application/Shell/ShellParametersProtocol.c
@@ -1,1504 +1,1504 @@
-/** @file

-  Member functions of EFI_SHELL_PARAMETERS_PROTOCOL and functions for creation,

-  manipulation, and initialization of EFI_SHELL_PARAMETERS_PROTOCOL.

-

-  (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>

-  Copyright (C) 2014, Red Hat, Inc.

-  (C) Copyright 2013 Hewlett-Packard Development Company, L.P.<BR>

-  Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>

-  SPDX-License-Identifier: BSD-2-Clause-Patent

-

-**/

-

-#include "Shell.h"

-

-BOOLEAN  AsciiRedirection = FALSE;

-

-/**

-  Return the next parameter's end from a command line string.

-

-  @param[in] String        the string to parse

-**/

-CONST CHAR16 *

-FindEndOfParameter (

-  IN CONST CHAR16  *String

-  )

-{

-  CONST CHAR16  *First;

-  CONST CHAR16  *CloseQuote;

-

-  First = FindFirstCharacter (String, L" \"", L'^');

-

-  //

-  // nothing, all one parameter remaining

-  //

-  if (*First == CHAR_NULL) {

-    return (First);

-  }

-

-  //

-  // If space before a quote (or neither found, i.e. both CHAR_NULL),

-  // then that's the end.

-  //

-  if (*First == L' ') {

-    return (First);

-  }

-

-  CloseQuote = FindFirstCharacter (First+1, L"\"", L'^');

-

-  //

-  // We did not find a terminator...

-  //

-  if (*CloseQuote == CHAR_NULL) {

-    return (NULL);

-  }

-

-  return (FindEndOfParameter (CloseQuote+1));

-}

-

-/**

-  Return the next parameter from a command line string.

-

-  This function moves the next parameter from Walker into TempParameter and moves

-  Walker up past that parameter for recursive calling.  When the final parameter

-  is moved *Walker will be set to NULL;

-

-  Temp Parameter must be large enough to hold the parameter before calling this

-  function.

-

-  This will also remove all remaining ^ characters after processing.

-

-  @param[in, out] Walker          pointer to string of command line.  Adjusted to

-                                  remaining command line on return

-  @param[in, out] TempParameter   pointer to string of command line item extracted.

-  @param[in]      Length          buffer size of TempParameter.

-  @param[in]      StripQuotation  if TRUE then strip the quotation marks surrounding

-                                  the parameters.

-

-  @return   EFI_INVALID_PARAMETER A required parameter was NULL or pointed to a NULL or empty string.

-  @return   EFI_NOT_FOUND         A closing " could not be found on the specified string

-**/

-EFI_STATUS

-GetNextParameter (

-  IN OUT CHAR16   **Walker,

-  IN OUT CHAR16   **TempParameter,

-  IN CONST UINTN  Length,

-  IN BOOLEAN      StripQuotation

-  )

-{

-  CONST CHAR16  *NextDelim;

-

-  if (  (Walker           == NULL)

-     || (*Walker          == NULL)

-     || (TempParameter    == NULL)

-     || (*TempParameter   == NULL)

-        )

-  {

-    return (EFI_INVALID_PARAMETER);

-  }

-

-  //

-  // make sure we dont have any leading spaces

-  //

-  while ((*Walker)[0] == L' ') {

-    (*Walker)++;

-  }

-

-  //

-  // make sure we still have some params now...

-  //

-  if (StrLen (*Walker) == 0) {

-    DEBUG_CODE_BEGIN ();

-    *Walker = NULL;

-    DEBUG_CODE_END ();

-    return (EFI_INVALID_PARAMETER);

-  }

-

-  NextDelim = FindEndOfParameter (*Walker);

-

-  if (NextDelim == NULL) {

-    DEBUG_CODE_BEGIN ();

-    *Walker = NULL;

-    DEBUG_CODE_END ();

-    return (EFI_NOT_FOUND);

-  }

-

-  StrnCpyS (*TempParameter, Length / sizeof (CHAR16), (*Walker), NextDelim - *Walker);

-

-  //

-  // Add a CHAR_NULL if we didn't get one via the copy

-  //

-  if (*NextDelim != CHAR_NULL) {

-    (*TempParameter)[NextDelim - *Walker] = CHAR_NULL;

-  }

-

-  //

-  // Update Walker for the next iteration through the function

-  //

-  *Walker = (CHAR16 *)NextDelim;

-

-  //

-  // Remove any non-escaped quotes in the string

-  // Remove any remaining escape characters in the string

-  //

-  for (NextDelim = FindFirstCharacter (*TempParameter, L"\"^", CHAR_NULL)

-       ; *NextDelim != CHAR_NULL

-       ; NextDelim = FindFirstCharacter (NextDelim, L"\"^", CHAR_NULL)

-       )

-  {

-    if (*NextDelim == L'^') {

-      //

-      // eliminate the escape ^

-      //

-      CopyMem ((CHAR16 *)NextDelim, NextDelim + 1, StrSize (NextDelim + 1));

-      NextDelim++;

-    } else if (*NextDelim == L'\"') {

-      //

-      // eliminate the unescaped quote

-      //

-      if (StripQuotation) {

-        CopyMem ((CHAR16 *)NextDelim, NextDelim + 1, StrSize (NextDelim + 1));

-      } else {

-        NextDelim++;

-      }

-    }

-  }

-

-  return EFI_SUCCESS;

-}

-

-/**

-  Function to populate Argc and Argv.

-

-  This function parses the CommandLine and divides it into standard C style Argc/Argv

-  parameters for inclusion in EFI_SHELL_PARAMETERS_PROTOCOL.  this supports space

-  delimited and quote surrounded parameter definition.

-

-  All special character processing (alias, environment variable, redirection,

-  etc... must be complete before calling this API.

-

-  @param[in] CommandLine          String of command line to parse

-  @param[in] StripQuotation       if TRUE then strip the quotation marks surrounding

-                                  the parameters.

-  @param[in, out] Argv            pointer to array of strings; one for each parameter

-  @param[in, out] Argc            pointer to number of strings in Argv array

-

-  @return EFI_SUCCESS           the operation was successful

-  @return EFI_INVALID_PARAMETER some parameters are invalid

-  @return EFI_OUT_OF_RESOURCES  a memory allocation failed.

-**/

-EFI_STATUS

-ParseCommandLineToArgs (

-  IN CONST CHAR16  *CommandLine,

-  IN BOOLEAN       StripQuotation,

-  IN OUT CHAR16    ***Argv,

-  IN OUT UINTN     *Argc

-  )

-{

-  UINTN       Count;

-  CHAR16      *TempParameter;

-  CHAR16      *Walker;

-  CHAR16      *NewParam;

-  CHAR16      *NewCommandLine;

-  UINTN       Size;

-  EFI_STATUS  Status;

-

-  ASSERT (Argc != NULL);

-  ASSERT (Argv != NULL);

-

-  if ((CommandLine == NULL) || (StrLen (CommandLine) == 0)) {

-    (*Argc) = 0;

-    (*Argv) = NULL;

-    return (EFI_SUCCESS);

-  }

-

-  NewCommandLine = AllocateCopyPool (StrSize (CommandLine), CommandLine);

-  if (NewCommandLine == NULL) {

-    return (EFI_OUT_OF_RESOURCES);

-  }

-

-  TrimSpaces (&NewCommandLine);

-  Size          = StrSize (NewCommandLine);

-  TempParameter = AllocateZeroPool (Size);

-  if (TempParameter == NULL) {

-    SHELL_FREE_NON_NULL (NewCommandLine);

-    return (EFI_OUT_OF_RESOURCES);

-  }

-

-  for ( Count = 0,

-        Walker = (CHAR16 *)NewCommandLine

-        ; Walker != NULL && *Walker != CHAR_NULL

-        ; Count++

-        )

-  {

-    if (EFI_ERROR (GetNextParameter (&Walker, &TempParameter, Size, TRUE))) {

-      break;

-    }

-  }

-

-  //

-  // lets allocate the pointer array

-  //

-  (*Argv) = AllocateZeroPool ((Count)*sizeof (CHAR16 *));

-  if (*Argv == NULL) {

-    Status = EFI_OUT_OF_RESOURCES;

-    goto Done;

-  }

-

-  *Argc  = 0;

-  Walker = (CHAR16 *)NewCommandLine;

-  while (Walker != NULL && *Walker != CHAR_NULL) {

-    SetMem16 (TempParameter, Size, CHAR_NULL);

-    if (EFI_ERROR (GetNextParameter (&Walker, &TempParameter, Size, StripQuotation))) {

-      Status = EFI_INVALID_PARAMETER;

-      goto Done;

-    }

-

-    NewParam = AllocateCopyPool (StrSize (TempParameter), TempParameter);

-    if (NewParam == NULL) {

-      Status = EFI_OUT_OF_RESOURCES;

-      goto Done;

-    }

-

-    ((CHAR16 **)(*Argv))[(*Argc)] = NewParam;

-    (*Argc)++;

-  }

-

-  ASSERT (Count >= (*Argc));

-  Status = EFI_SUCCESS;

-

-Done:

-  SHELL_FREE_NON_NULL (TempParameter);

-  SHELL_FREE_NON_NULL (NewCommandLine);

-  return (Status);

-}

-

-/**

-  creates a new EFI_SHELL_PARAMETERS_PROTOCOL instance and populates it and then

-  installs it on our handle and if there is an existing version of the protocol

-  that one is cached for removal later.

-

-  @param[in, out] NewShellParameters on a successful return, a pointer to pointer

-                                     to the newly installed interface.

-  @param[in, out] RootShellInstance  on a successful return, pointer to boolean.

-                                     TRUE if this is the root shell instance.

-

-  @retval EFI_SUCCESS               the operation completed successfully.

-  @return other                     the operation failed.

-  @sa ReinstallProtocolInterface

-  @sa InstallProtocolInterface

-  @sa ParseCommandLineToArgs

-**/

-EFI_STATUS

-CreatePopulateInstallShellParametersProtocol (

-  IN OUT EFI_SHELL_PARAMETERS_PROTOCOL  **NewShellParameters,

-  IN OUT BOOLEAN                        *RootShellInstance

-  )

-{

-  EFI_STATUS                 Status;

-  EFI_LOADED_IMAGE_PROTOCOL  *LoadedImage;

-  CHAR16                     *FullCommandLine;

-  UINTN                      Size;

-

-  Size            = 0;

-  FullCommandLine = NULL;

-  LoadedImage     = NULL;

-

-  //

-  // Assert for valid parameters

-  //

-  ASSERT (NewShellParameters != NULL);

-  ASSERT (RootShellInstance  != NULL);

-

-  //

-  // See if we have a shell parameters placed on us

-  //

-  Status = gBS->OpenProtocol (

-                  gImageHandle,

-                  &gEfiShellParametersProtocolGuid,

-                  (VOID **)&ShellInfoObject.OldShellParameters,

-                  gImageHandle,

-                  NULL,

-                  EFI_OPEN_PROTOCOL_GET_PROTOCOL

-                  );

-  //

-  // if we don't then we must be the root shell (error is expected)

-  //

-  if (EFI_ERROR (Status)) {

-    *RootShellInstance = TRUE;

-  }

-

-  //

-  // Allocate the new structure

-  //

-  *NewShellParameters = AllocateZeroPool (sizeof (EFI_SHELL_PARAMETERS_PROTOCOL));

-  if ((*NewShellParameters) == NULL) {

-    return (EFI_OUT_OF_RESOURCES);

-  }

-

-  //

-  // get loaded image protocol

-  //

-  Status = gBS->OpenProtocol (

-                  gImageHandle,

-                  &gEfiLoadedImageProtocolGuid,

-                  (VOID **)&LoadedImage,

-                  gImageHandle,

-                  NULL,

-                  EFI_OPEN_PROTOCOL_GET_PROTOCOL

-                  );

-  ASSERT_EFI_ERROR (Status);

-  //

-  // Build the full command line

-  //

-  Status = SHELL_GET_ENVIRONMENT_VARIABLE (L"ShellOpt", &Size, FullCommandLine);

-  if (Status == EFI_BUFFER_TOO_SMALL) {

-    FullCommandLine = AllocateZeroPool (Size + LoadedImage->LoadOptionsSize);

-    Status          = SHELL_GET_ENVIRONMENT_VARIABLE (L"ShellOpt", &Size, FullCommandLine);

-  }

-

-  if (Status == EFI_NOT_FOUND) {

-    //

-    // no parameters via environment... ok

-    //

-  } else {

-    if (EFI_ERROR (Status)) {

-      return (Status);

-    }

-  }

-

-  if ((Size == 0) && (LoadedImage->LoadOptionsSize != 0)) {

-    ASSERT (FullCommandLine == NULL);

-    //

-    // Now we need to include a NULL terminator in the size.

-    //

-    Size            = LoadedImage->LoadOptionsSize + sizeof (FullCommandLine[0]);

-    FullCommandLine = AllocateZeroPool (Size);

-  }

-

-  if (FullCommandLine != NULL) {

-    CopyMem (FullCommandLine, LoadedImage->LoadOptions, LoadedImage->LoadOptionsSize);

-    //

-    // Populate Argc and Argv

-    //

-    Status = ParseCommandLineToArgs (

-               FullCommandLine,

-               TRUE,

-               &(*NewShellParameters)->Argv,

-               &(*NewShellParameters)->Argc

-               );

-

-    FreePool (FullCommandLine);

-

-    ASSERT_EFI_ERROR (Status);

-  } else {

-    (*NewShellParameters)->Argv = NULL;

-    (*NewShellParameters)->Argc = 0;

-  }

-

-  //

-  // Populate the 3 faked file systems...

-  //

-  if (*RootShellInstance) {

-    (*NewShellParameters)->StdIn  = &FileInterfaceStdIn;

-    (*NewShellParameters)->StdOut = &FileInterfaceStdOut;

-    (*NewShellParameters)->StdErr = &FileInterfaceStdErr;

-    Status                        = gBS->InstallProtocolInterface (

-                                           &gImageHandle,

-                                           &gEfiShellParametersProtocolGuid,

-                                           EFI_NATIVE_INTERFACE,

-                                           (VOID *)(*NewShellParameters)

-                                           );

-  } else {

-    //

-    // copy from the existing ones

-    //

-    (*NewShellParameters)->StdIn  = ShellInfoObject.OldShellParameters->StdIn;

-    (*NewShellParameters)->StdOut = ShellInfoObject.OldShellParameters->StdOut;

-    (*NewShellParameters)->StdErr = ShellInfoObject.OldShellParameters->StdErr;

-    Status                        = gBS->ReinstallProtocolInterface (

-                                           gImageHandle,

-                                           &gEfiShellParametersProtocolGuid,

-                                           (VOID *)ShellInfoObject.OldShellParameters,

-                                           (VOID *)(*NewShellParameters)

-                                           );

-  }

-

-  return (Status);

-}

-

-/**

-  frees all memory used by creation and installation of shell parameters protocol

-  and if there was an old version installed it will restore that one.

-

-  @param NewShellParameters the interface of EFI_SHELL_PARAMETERS_PROTOCOL that is

-  being cleaned up.

-

-  @retval EFI_SUCCESS     the cleanup was successful

-  @return other           the cleanup failed

-  @sa ReinstallProtocolInterface

-  @sa UninstallProtocolInterface

-**/

-EFI_STATUS

-CleanUpShellParametersProtocol (

-  IN OUT EFI_SHELL_PARAMETERS_PROTOCOL  *NewShellParameters

-  )

-{

-  EFI_STATUS  Status;

-  UINTN       LoopCounter;

-

-  //

-  // If the old exists we need to restore it

-  //

-  if (ShellInfoObject.OldShellParameters != NULL) {

-    Status = gBS->ReinstallProtocolInterface (

-                    gImageHandle,

-                    &gEfiShellParametersProtocolGuid,

-                    (VOID *)NewShellParameters,

-                    (VOID *)ShellInfoObject.OldShellParameters

-                    );

-    DEBUG_CODE (

-      ShellInfoObject.OldShellParameters = NULL;

-      );

-  } else {

-    //

-    // No old one, just uninstall us...

-    //

-    Status = gBS->UninstallProtocolInterface (

-                    gImageHandle,

-                    &gEfiShellParametersProtocolGuid,

-                    (VOID *)NewShellParameters

-                    );

-  }

-

-  if (NewShellParameters->Argv != NULL) {

-    for ( LoopCounter = 0

-          ; LoopCounter < NewShellParameters->Argc

-          ; LoopCounter++

-          )

-    {

-      FreePool (NewShellParameters->Argv[LoopCounter]);

-    }

-

-    FreePool (NewShellParameters->Argv);

-  }

-

-  FreePool (NewShellParameters);

-  return (Status);

-}

-

-/**

-  Determine if a file name represents a unicode file.

-

-  @param[in] FileName     Pointer to the filename to open.

-

-  @retval EFI_SUCCESS     The file is a unicode file.

-  @return An error upon failure.

-**/

-EFI_STATUS

-IsUnicodeFile (

-  IN CONST CHAR16  *FileName

-  )

-{

-  SHELL_FILE_HANDLE  Handle;

-  EFI_STATUS         Status;

-  UINT64             OriginalFilePosition;

-  UINTN              CharSize;

-  CHAR16             CharBuffer;

-

-  Status = gEfiShellProtocol->OpenFileByName (FileName, &Handle, EFI_FILE_MODE_READ);

-  if (EFI_ERROR (Status)) {

-    return (Status);

-  }

-

-  gEfiShellProtocol->GetFilePosition (Handle, &OriginalFilePosition);

-  gEfiShellProtocol->SetFilePosition (Handle, 0);

-  CharSize = sizeof (CHAR16);

-  Status   = gEfiShellProtocol->ReadFile (Handle, &CharSize, &CharBuffer);

-  if (EFI_ERROR (Status) || (CharBuffer != gUnicodeFileTag)) {

-    Status = EFI_BUFFER_TOO_SMALL;

-  }

-

-  gEfiShellProtocol->SetFilePosition (Handle, OriginalFilePosition);

-  gEfiShellProtocol->CloseFile (Handle);

-  return (Status);

-}

-

-/**

-  Strips out quotes sections of a string.

-

-  All of the characters between quotes is replaced with spaces.

-

-  @param[in, out] TheString  A pointer to the string to update.

-**/

-VOID

-StripQuotes (

-  IN OUT CHAR16  *TheString

-  )

-{

-  BOOLEAN  RemoveNow;

-

-  for (RemoveNow = FALSE; TheString != NULL && *TheString != CHAR_NULL; TheString++) {

-    if ((*TheString == L'^') && (*(TheString + 1) == L'\"')) {

-      TheString++;

-    } else if (*TheString == L'\"') {

-      RemoveNow = (BOOLEAN) !RemoveNow;

-    } else if (RemoveNow) {

-      *TheString = L' ';

-    }

-  }

-}

-

-/**

-  Calculate the 32-bit CRC in a EFI table using the service provided by the

-  gRuntime service.

-

-  @param  Hdr                    Pointer to an EFI standard header

-

-**/

-VOID

-CalculateEfiHdrCrc (

-  IN  OUT EFI_TABLE_HEADER  *Hdr

-  )

-{

-  UINT32  Crc;

-

-  Hdr->CRC32 = 0;

-

-  //

-  // If gBS->CalculateCrce32 () == CoreEfiNotAvailableYet () then

-  //  Crc will come back as zero if we set it to zero here

-  //

-  Crc = 0;

-  gBS->CalculateCrc32 ((UINT8 *)Hdr, Hdr->HeaderSize, &Crc);

-  Hdr->CRC32 = Crc;

-}

-

-/**

-  Fix a string to only have the file name, removing starting at the first space of whatever is quoted.

-

-  @param[in]  FileName    The filename to start with.

-

-  @retval NULL  FileName was invalid.

-  @return       The modified FileName.

-**/

-CHAR16 *

-FixFileName (

-  IN CHAR16  *FileName

-  )

-{

-  CHAR16  *Copy;

-  CHAR16  *TempLocation;

-

-  if (FileName == NULL) {

-    return (NULL);

-  }

-

-  if (FileName[0] == L'\"') {

-    Copy = FileName+1;

-    if ((TempLocation = StrStr (Copy, L"\"")) != NULL) {

-      TempLocation[0] = CHAR_NULL;

-    }

-  } else {

-    Copy = FileName;

-    while (Copy[0] == L' ') {

-      Copy++;

-    }

-

-    if ((TempLocation = StrStr (Copy, L" ")) != NULL) {

-      TempLocation[0] = CHAR_NULL;

-    }

-  }

-

-  if (Copy[0] == CHAR_NULL) {

-    return (NULL);

-  }

-

-  return (Copy);

-}

-

-/**

-  Fix a string to only have the environment variable name, removing starting at the first space of whatever is quoted and removing the leading and trailing %.

-

-  @param[in]  FileName    The filename to start with.

-

-  @retval NULL  FileName was invalid.

-  @return       The modified FileName.

-**/

-CHAR16 *

-FixVarName (

-  IN CHAR16  *FileName

-  )

-{

-  CHAR16  *Copy;

-  CHAR16  *TempLocation;

-

-  Copy = FileName;

-

-  if (FileName[0] == L'%') {

-    Copy = FileName+1;

-    if ((TempLocation = StrStr (Copy, L"%")) != NULL) {

-      TempLocation[0] = CHAR_NULL;

-    }

-  }

-

-  return (FixFileName (Copy));

-}

-

-/**

-  Write the unicode file tag to the specified file.

-

-  It is the caller's responsibility to ensure that

-  ShellInfoObject.NewEfiShellProtocol has been initialized before calling this

-  function.

-

-  @param[in] FileHandle  The file to write the unicode file tag to.

-

-  @return  Status code from ShellInfoObject.NewEfiShellProtocol->WriteFile.

-**/

-EFI_STATUS

-WriteFileTag (

-  IN SHELL_FILE_HANDLE  FileHandle

-  )

-{

-  CHAR16      FileTag;

-  UINTN       Size;

-  EFI_STATUS  Status;

-

-  FileTag = gUnicodeFileTag;

-  Size    = sizeof FileTag;

-  Status  = ShellInfoObject.NewEfiShellProtocol->WriteFile (

-                                                   FileHandle,

-                                                   &Size,

-                                                   &FileTag

-                                                   );

-  ASSERT (EFI_ERROR (Status) || Size == sizeof FileTag);

-  return Status;

-}

-

-/**

-  Function will replace the current StdIn and StdOut in the ShellParameters protocol

-  structure by parsing NewCommandLine.  The current values are returned to the

-  user.

-

-  This will also update the system table.

-

-  @param[in, out] ShellParameters        Pointer to parameter structure to modify.

-  @param[in] NewCommandLine              The new command line to parse and use.

-  @param[out] OldStdIn                   Pointer to old StdIn.

-  @param[out] OldStdOut                  Pointer to old StdOut.

-  @param[out] OldStdErr                  Pointer to old StdErr.

-  @param[out] SystemTableInfo            Pointer to old system table information.

-

-  @retval   EFI_SUCCESS                 Operation was successful, Argv and Argc are valid.

-  @retval   EFI_OUT_OF_RESOURCES        A memory allocation failed.

-**/

-EFI_STATUS

-UpdateStdInStdOutStdErr (

-  IN OUT EFI_SHELL_PARAMETERS_PROTOCOL  *ShellParameters,

-  IN CHAR16                             *NewCommandLine,

-  OUT SHELL_FILE_HANDLE                 *OldStdIn,

-  OUT SHELL_FILE_HANDLE                 *OldStdOut,

-  OUT SHELL_FILE_HANDLE                 *OldStdErr,

-  OUT SYSTEM_TABLE_INFO                 *SystemTableInfo

-  )

-{

-  CHAR16             *CommandLineCopy;

-  CHAR16             *CommandLineWalker;

-  CHAR16             *StdErrFileName;

-  CHAR16             *StdOutFileName;

-  CHAR16             *StdInFileName;

-  CHAR16             *StdInVarName;

-  CHAR16             *StdOutVarName;

-  CHAR16             *StdErrVarName;

-  EFI_STATUS         Status;

-  SHELL_FILE_HANDLE  TempHandle;

-  UINT64             FileSize;

-  BOOLEAN            OutUnicode;

-  BOOLEAN            InUnicode;

-  BOOLEAN            ErrUnicode;

-  BOOLEAN            OutAppend;

-  BOOLEAN            ErrAppend;

-  UINTN              Size;

-  SPLIT_LIST         *Split;

-  CHAR16             *FirstLocation;

-  BOOLEAN            Volatile;

-

-  OutUnicode       = TRUE;

-  InUnicode        = TRUE;

-  AsciiRedirection = FALSE;

-  ErrUnicode       = TRUE;

-  StdInVarName     = NULL;

-  StdOutVarName    = NULL;

-  StdErrVarName    = NULL;

-  StdErrFileName   = NULL;

-  StdInFileName    = NULL;

-  StdOutFileName   = NULL;

-  ErrAppend        = FALSE;

-  OutAppend        = FALSE;

-  CommandLineCopy  = NULL;

-  FirstLocation    = NULL;

-

-  if ((ShellParameters == NULL) || (SystemTableInfo == NULL) || (OldStdIn == NULL) || (OldStdOut == NULL) || (OldStdErr == NULL)) {

-    return (EFI_INVALID_PARAMETER);

-  }

-

-  SystemTableInfo->ConIn        = gST->ConIn;

-  SystemTableInfo->ConInHandle  = gST->ConsoleInHandle;

-  SystemTableInfo->ConOut       = gST->ConOut;

-  SystemTableInfo->ConOutHandle = gST->ConsoleOutHandle;

-  SystemTableInfo->ErrOut       = gST->StdErr;

-  SystemTableInfo->ErrOutHandle = gST->StandardErrorHandle;

-  *OldStdIn                     = ShellParameters->StdIn;

-  *OldStdOut                    = ShellParameters->StdOut;

-  *OldStdErr                    = ShellParameters->StdErr;

-

-  if (NewCommandLine == NULL) {

-    return (EFI_SUCCESS);

-  }

-

-  CommandLineCopy = StrnCatGrow (&CommandLineCopy, NULL, NewCommandLine, 0);

-  if (CommandLineCopy == NULL) {

-    return (EFI_OUT_OF_RESOURCES);

-  }

-

-  Status        = EFI_SUCCESS;

-  Split         = NULL;

-  FirstLocation = CommandLineCopy + StrLen (CommandLineCopy);

-

-  StripQuotes (CommandLineCopy);

-

-  if (!IsListEmpty (&ShellInfoObject.SplitList.Link)) {

-    Split = (SPLIT_LIST *)GetFirstNode (&ShellInfoObject.SplitList.Link);

-    if ((Split != NULL) && (Split->SplitStdIn != NULL)) {

-      ShellParameters->StdIn = Split->SplitStdIn;

-    }

-

-    if ((Split != NULL) && (Split->SplitStdOut != NULL)) {

-      ShellParameters->StdOut = Split->SplitStdOut;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 2>>v ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 12, L' ');

-    StdErrVarName = CommandLineWalker += 6;

-    ErrAppend     = TRUE;

-    if (StrStr (CommandLineWalker, L" 2>>v ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 1>>v ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 12, L' ');

-    StdOutVarName = CommandLineWalker += 6;

-    OutAppend     = TRUE;

-    if (StrStr (CommandLineWalker, L" 1>>v ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  } else if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" >>v ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 10, L' ');

-    StdOutVarName = CommandLineWalker += 5;

-    OutAppend     = TRUE;

-    if (StrStr (CommandLineWalker, L" >>v ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  } else if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" >v ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 8, L' ');

-    StdOutVarName = CommandLineWalker += 4;

-    OutAppend     = FALSE;

-    if (StrStr (CommandLineWalker, L" >v ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 1>>a ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 12, L' ');

-    StdOutFileName = CommandLineWalker += 6;

-    OutAppend      = TRUE;

-    OutUnicode     = FALSE;

-    if (StrStr (CommandLineWalker, L" 1>>a ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 1>> ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 10, L' ');

-    if (StdOutFileName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdOutFileName = CommandLineWalker += 5;

-      OutAppend      = TRUE;

-    }

-

-    if (StrStr (CommandLineWalker, L" 1>> ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" >> ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 8, L' ');

-    if (StdOutFileName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdOutFileName = CommandLineWalker += 4;

-      OutAppend      = TRUE;

-    }

-

-    if (StrStr (CommandLineWalker, L" >> ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" >>a ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 10, L' ');

-    if (StdOutFileName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdOutFileName = CommandLineWalker += 5;

-      OutAppend      = TRUE;

-      OutUnicode     = FALSE;

-    }

-

-    if (StrStr (CommandLineWalker, L" >>a ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 1>a ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 10, L' ');

-    if (StdOutFileName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdOutFileName = CommandLineWalker += 5;

-      OutAppend      = FALSE;

-      OutUnicode     = FALSE;

-    }

-

-    if (StrStr (CommandLineWalker, L" 1>a ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" >a ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 8, L' ');

-    if (StdOutFileName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdOutFileName = CommandLineWalker += 4;

-      OutAppend      = FALSE;

-      OutUnicode     = FALSE;

-    }

-

-    if (StrStr (CommandLineWalker, L" >a ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 2>> ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 10, L' ');

-    if (StdErrFileName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdErrFileName = CommandLineWalker += 5;

-      ErrAppend      = TRUE;

-    }

-

-    if (StrStr (CommandLineWalker, L" 2>> ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 2>v ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 10, L' ');

-    if (StdErrVarName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdErrVarName = CommandLineWalker += 5;

-      ErrAppend     = FALSE;

-    }

-

-    if (StrStr (CommandLineWalker, L" 2>v ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 1>v ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 10, L' ');

-    if (StdOutVarName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdOutVarName = CommandLineWalker += 5;

-      OutAppend     = FALSE;

-    }

-

-    if (StrStr (CommandLineWalker, L" 1>v ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 2>a ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 10, L' ');

-    if (StdErrFileName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdErrFileName = CommandLineWalker += 5;

-      ErrAppend      = FALSE;

-      ErrUnicode     = FALSE;

-    }

-

-    if (StrStr (CommandLineWalker, L" 2>a ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 2> ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 8, L' ');

-    if (StdErrFileName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdErrFileName = CommandLineWalker += 4;

-      ErrAppend      = FALSE;

-    }

-

-    if (StrStr (CommandLineWalker, L" 2> ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 1> ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 8, L' ');

-    if (StdOutFileName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdOutFileName = CommandLineWalker += 4;

-      OutAppend      = FALSE;

-    }

-

-    if (StrStr (CommandLineWalker, L" 1> ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" > ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 6, L' ');

-    if (StdOutFileName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdOutFileName = CommandLineWalker += 3;

-      OutAppend      = FALSE;

-    }

-

-    if (StrStr (CommandLineWalker, L" > ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" < ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 6, L' ');

-    if (StdInFileName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdInFileName = CommandLineWalker += 3;

-    }

-

-    if (StrStr (CommandLineWalker, L" < ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" <a ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 8, L' ');

-    if (StdInFileName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdInFileName    = CommandLineWalker += 4;

-      InUnicode        = FALSE;

-      AsciiRedirection = TRUE;

-    }

-

-    if (StrStr (CommandLineWalker, L" <a ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" <v ")) != NULL)) {

-    FirstLocation = MIN (CommandLineWalker, FirstLocation);

-    SetMem16 (CommandLineWalker, 8, L' ');

-    if (StdInVarName != NULL) {

-      Status = EFI_INVALID_PARAMETER;

-    } else {

-      StdInVarName = CommandLineWalker += 4;

-    }

-

-    if (StrStr (CommandLineWalker, L" <v ") != NULL) {

-      Status = EFI_NOT_FOUND;

-    }

-  }

-

-  //

-  // re-populate the string to support any filenames that were in quotes.

-  //

-  StrnCpyS (CommandLineCopy, StrSize (CommandLineCopy)/sizeof (CHAR16), NewCommandLine, StrLen (NewCommandLine));

-

-  if (  (FirstLocation != CommandLineCopy + StrLen (CommandLineCopy))

-     && (((UINTN)FirstLocation - (UINTN)CommandLineCopy)/sizeof (CHAR16) < StrLen (NewCommandLine))

-        )

-  {

-    *(NewCommandLine + ((UINTN)FirstLocation - (UINTN)CommandLineCopy)/sizeof (CHAR16)) = CHAR_NULL;

-  }

-

-  if (!EFI_ERROR (Status)) {

-    if (StdErrFileName != NULL) {

-      if ((StdErrFileName    = FixFileName (StdErrFileName)) == NULL) {

-        Status = EFI_INVALID_PARAMETER;

-      }

-    }

-

-    if (StdOutFileName != NULL) {

-      if ((StdOutFileName    = FixFileName (StdOutFileName)) == NULL) {

-        Status = EFI_INVALID_PARAMETER;

-      }

-    }

-

-    if (StdInFileName  != NULL) {

-      if ((StdInFileName     = FixFileName (StdInFileName)) == NULL) {

-        Status = EFI_INVALID_PARAMETER;

-      }

-    }

-

-    if (StdErrVarName  != NULL) {

-      if ((StdErrVarName     = FixVarName (StdErrVarName)) == NULL) {

-        Status = EFI_INVALID_PARAMETER;

-      }

-    }

-

-    if (StdOutVarName  != NULL) {

-      if ((StdOutVarName     = FixVarName (StdOutVarName)) == NULL) {

-        Status = EFI_INVALID_PARAMETER;

-      }

-    }

-

-    if (StdInVarName   != NULL) {

-      if ((StdInVarName      = FixVarName (StdInVarName)) == NULL) {

-        Status = EFI_INVALID_PARAMETER;

-      }

-    }

-

-    //

-    // Verify not the same and not duplicating something from a split

-    //

-    if (

-          //

-          // Check that no 2 filenames are the same

-          //

-          ((StdErrFileName != NULL) && (StdOutFileName != NULL) && (StringNoCaseCompare (&StdErrFileName, &StdOutFileName) == 0))

-       || ((StdErrFileName != NULL) && (StdInFileName != NULL) && (StringNoCaseCompare (&StdErrFileName, &StdInFileName) == 0))

-       || ((StdOutFileName != NULL) && (StdInFileName != NULL) && (StringNoCaseCompare (&StdOutFileName, &StdInFileName) == 0))

-          //

-          // Check that no 2 variable names are the same

-          //

-       || ((StdErrVarName  != NULL) && (StdInVarName  != NULL) && (StringNoCaseCompare (&StdErrVarName, &StdInVarName) == 0))

-       || ((StdOutVarName  != NULL) && (StdInVarName != NULL) && (StringNoCaseCompare (&StdOutVarName, &StdInVarName) == 0))

-       || ((StdErrVarName  != NULL) && (StdOutVarName != NULL) && (StringNoCaseCompare (&StdErrVarName, &StdOutVarName) == 0))

-          //

-          // When a split (using | operator) is in place some are not allowed

-          //

-       || ((Split != NULL) && (Split->SplitStdIn  != NULL) && ((StdInVarName  != NULL) || (StdInFileName  != NULL)))

-       || ((Split != NULL) && (Split->SplitStdOut != NULL) && ((StdOutVarName != NULL) || (StdOutFileName != NULL)))

-          //

-          // Check that nothing is trying to be output to 2 locations.

-          //

-       || ((StdErrFileName != NULL) && (StdErrVarName != NULL))

-       || ((StdOutFileName != NULL) && (StdOutVarName != NULL))

-       || ((StdInFileName  != NULL) && (StdInVarName  != NULL))

-          //

-          // Check for no volatile environment variables

-          //

-       || ((StdErrVarName  != NULL) && !EFI_ERROR (IsVolatileEnv (StdErrVarName, &Volatile)) && !Volatile)

-       || ((StdOutVarName  != NULL) && !EFI_ERROR (IsVolatileEnv (StdOutVarName, &Volatile)) && !Volatile)

-          //

-          // Cant redirect during a reconnect operation.

-          //

-       || (  (StrStr (NewCommandLine, L"connect -r") != NULL)

-          && ((StdOutVarName != NULL) || (StdOutFileName != NULL) || (StdErrFileName != NULL) || (StdErrVarName != NULL)))

-          //

-          // Check that filetypes (Unicode/Ascii) do not change during an append

-          //

-       || ((StdOutFileName != NULL) && OutUnicode && OutAppend && (!EFI_ERROR (ShellFileExists (StdOutFileName)) && EFI_ERROR (IsUnicodeFile (StdOutFileName))))

-       || ((StdErrFileName != NULL) && ErrUnicode && ErrAppend && (!EFI_ERROR (ShellFileExists (StdErrFileName)) && EFI_ERROR (IsUnicodeFile (StdErrFileName))))

-       || ((StdOutFileName != NULL) && !OutUnicode && OutAppend && (!EFI_ERROR (ShellFileExists (StdOutFileName)) && !EFI_ERROR (IsUnicodeFile (StdOutFileName))))

-       || ((StdErrFileName != NULL) && !ErrUnicode && ErrAppend && (!EFI_ERROR (ShellFileExists (StdErrFileName)) && !EFI_ERROR (IsUnicodeFile (StdErrFileName))))

-          )

-    {

-      Status                  = EFI_INVALID_PARAMETER;

-      ShellParameters->StdIn  = *OldStdIn;

-      ShellParameters->StdOut = *OldStdOut;

-      ShellParameters->StdErr = *OldStdErr;

-    } else if (!EFI_ERROR (Status)) {

-      //

-      // Open the Std<Whatever> and we should not have conflicts here...

-      //

-

-      //

-      // StdErr to a file

-      //

-      if (StdErrFileName != NULL) {

-        if (!ErrAppend) {

-          //

-          // delete existing file.

-          //

-          ShellInfoObject.NewEfiShellProtocol->DeleteFileByName (StdErrFileName);

-        }

-

-        Status = ShellOpenFileByName (StdErrFileName, &TempHandle, EFI_FILE_MODE_WRITE|EFI_FILE_MODE_READ|EFI_FILE_MODE_CREATE, 0);

-        if (!ErrAppend && ErrUnicode && !EFI_ERROR (Status)) {

-          Status = WriteFileTag (TempHandle);

-        }

-

-        if (!ErrUnicode && !EFI_ERROR (Status)) {

-          TempHandle = CreateFileInterfaceFile (TempHandle, FALSE);

-          ASSERT (TempHandle != NULL);

-        }

-

-        if (!EFI_ERROR (Status)) {

-          ShellParameters->StdErr = TempHandle;

-          gST->StdErr             = CreateSimpleTextOutOnFile (TempHandle, &gST->StandardErrorHandle, gST->StdErr);

-        }

-      }

-

-      //

-      // StdOut to a file

-      //

-      if (!EFI_ERROR (Status) && (StdOutFileName != NULL)) {

-        if (!OutAppend) {

-          //

-          // delete existing file.

-          //

-          ShellInfoObject.NewEfiShellProtocol->DeleteFileByName (StdOutFileName);

-        }

-

-        Status = ShellOpenFileByName (StdOutFileName, &TempHandle, EFI_FILE_MODE_WRITE|EFI_FILE_MODE_READ|EFI_FILE_MODE_CREATE, 0);

-        if (TempHandle == NULL) {

-          Status = EFI_INVALID_PARAMETER;

-        } else {

-          if (gUnicodeCollation->MetaiMatch (gUnicodeCollation, StdOutFileName, L"NUL")) {

-            // no-op

-          } else if (!OutAppend && OutUnicode && !EFI_ERROR (Status)) {

-            Status = WriteFileTag (TempHandle);

-          } else if (OutAppend) {

-            Status = ShellInfoObject.NewEfiShellProtocol->GetFileSize (TempHandle, &FileSize);

-            if (!EFI_ERROR (Status)) {

-              //

-              // When appending to a new unicode file, write the file tag.

-              // Otherwise (ie. when appending to a new ASCII file, or an

-              // existent file with any encoding), just seek to the end.

-              //

-              Status = (FileSize == 0 && OutUnicode) ?

-                       WriteFileTag (TempHandle) :

-                       ShellInfoObject.NewEfiShellProtocol->SetFilePosition (

-                                                              TempHandle,

-                                                              FileSize

-                                                              );

-            }

-          }

-

-          if (!OutUnicode && !EFI_ERROR (Status)) {

-            TempHandle = CreateFileInterfaceFile (TempHandle, FALSE);

-            ASSERT (TempHandle != NULL);

-          }

-

-          if (!EFI_ERROR (Status)) {

-            ShellParameters->StdOut = TempHandle;

-            gST->ConOut             = CreateSimpleTextOutOnFile (TempHandle, &gST->ConsoleOutHandle, gST->ConOut);

-          }

-        }

-      }

-

-      //

-      // StdOut to a var

-      //

-      if (!EFI_ERROR (Status) && (StdOutVarName != NULL)) {

-        if (!OutAppend) {

-          //

-          // delete existing variable.

-          //

-          SHELL_SET_ENVIRONMENT_VARIABLE_V (StdOutVarName, 0, L"");

-        }

-

-        TempHandle = CreateFileInterfaceEnv (StdOutVarName);

-        ASSERT (TempHandle != NULL);

-        ShellParameters->StdOut = TempHandle;

-        gST->ConOut             = CreateSimpleTextOutOnFile (TempHandle, &gST->ConsoleOutHandle, gST->ConOut);

-      }

-

-      //

-      // StdErr to a var

-      //

-      if (!EFI_ERROR (Status) && (StdErrVarName != NULL)) {

-        if (!ErrAppend) {

-          //

-          // delete existing variable.

-          //

-          SHELL_SET_ENVIRONMENT_VARIABLE_V (StdErrVarName, 0, L"");

-        }

-

-        TempHandle = CreateFileInterfaceEnv (StdErrVarName);

-        ASSERT (TempHandle != NULL);

-        ShellParameters->StdErr = TempHandle;

-        gST->StdErr             = CreateSimpleTextOutOnFile (TempHandle, &gST->StandardErrorHandle, gST->StdErr);

-      }

-

-      //

-      // StdIn from a var

-      //

-      if (!EFI_ERROR (Status) && (StdInVarName != NULL)) {

-        TempHandle = CreateFileInterfaceEnv (StdInVarName);

-        if (TempHandle == NULL) {

-          Status = EFI_OUT_OF_RESOURCES;

-        } else {

-          if (!InUnicode) {

-            TempHandle = CreateFileInterfaceFile (TempHandle, FALSE);

-          }

-

-          Size = 0;

-          if ((TempHandle == NULL) || (((EFI_FILE_PROTOCOL *)TempHandle)->Read (TempHandle, &Size, NULL) != EFI_BUFFER_TOO_SMALL)) {

-            Status = EFI_INVALID_PARAMETER;

-          } else {

-            ShellParameters->StdIn = TempHandle;

-            gST->ConIn             = CreateSimpleTextInOnFile (TempHandle, &gST->ConsoleInHandle);

-          }

-        }

-      }

-

-      //

-      // StdIn from a file

-      //

-      if (!EFI_ERROR (Status) && (StdInFileName != NULL)) {

-        Status = ShellOpenFileByName (

-                   StdInFileName,

-                   &TempHandle,

-                   EFI_FILE_MODE_READ,

-                   0

-                   );

-        if (!EFI_ERROR (Status)) {

-          if (!InUnicode) {

-            //

-            // Create the ASCII->Unicode conversion layer

-            //

-            TempHandle = CreateFileInterfaceFile (TempHandle, FALSE);

-          }

-

-          ShellParameters->StdIn = TempHandle;

-          gST->ConIn             = CreateSimpleTextInOnFile (TempHandle, &gST->ConsoleInHandle);

-        }

-      }

-    }

-  }

-

-  FreePool (CommandLineCopy);

-

-  CalculateEfiHdrCrc (&gST->Hdr);

-

-  if ((gST->ConIn == NULL) || (gST->ConOut == NULL)) {

-    Status = EFI_OUT_OF_RESOURCES;

-  }

-

-  if (Status == EFI_NOT_FOUND) {

-    ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_SHELL_REDUNDA_REDIR), ShellInfoObject.HiiHandle);

-  } else if (EFI_ERROR (Status)) {

-    ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_SHELL_INVALID_REDIR), ShellInfoObject.HiiHandle);

-  }

-

-  return (Status);

-}

-

-/**

-  Function will replace the current StdIn and StdOut in the ShellParameters protocol

-  structure with StdIn and StdOut.  The current values are de-allocated.

-

-  @param[in, out] ShellParameters      Pointer to parameter structure to modify.

-  @param[in] OldStdIn                  Pointer to old StdIn.

-  @param[in] OldStdOut                 Pointer to old StdOut.

-  @param[in] OldStdErr                 Pointer to old StdErr.

-  @param[in] SystemTableInfo           Pointer to old system table information.

-**/

-EFI_STATUS

-RestoreStdInStdOutStdErr (

-  IN OUT EFI_SHELL_PARAMETERS_PROTOCOL  *ShellParameters,

-  IN  SHELL_FILE_HANDLE                 *OldStdIn,

-  IN  SHELL_FILE_HANDLE                 *OldStdOut,

-  IN  SHELL_FILE_HANDLE                 *OldStdErr,

-  IN  SYSTEM_TABLE_INFO                 *SystemTableInfo

-  )

-{

-  SPLIT_LIST  *Split;

-

-  if (  (ShellParameters == NULL)

-     || (OldStdIn        == NULL)

-     || (OldStdOut       == NULL)

-     || (OldStdErr       == NULL)

-     || (SystemTableInfo == NULL))

-  {

-    return (EFI_INVALID_PARAMETER);

-  }

-

-  if (!IsListEmpty (&ShellInfoObject.SplitList.Link)) {

-    Split = (SPLIT_LIST *)GetFirstNode (&ShellInfoObject.SplitList.Link);

-  } else {

-    Split = NULL;

-  }

-

-  if (ShellParameters->StdIn  != *OldStdIn) {

-    if (((Split != NULL) && (Split->SplitStdIn != ShellParameters->StdIn)) || (Split == NULL)) {

-      gEfiShellProtocol->CloseFile (ShellParameters->StdIn);

-    }

-

-    ShellParameters->StdIn = *OldStdIn;

-  }

-

-  if (ShellParameters->StdOut != *OldStdOut) {

-    if (((Split != NULL) && (Split->SplitStdOut != ShellParameters->StdOut)) || (Split == NULL)) {

-      gEfiShellProtocol->CloseFile (ShellParameters->StdOut);

-    }

-

-    ShellParameters->StdOut = *OldStdOut;

-  }

-

-  if (ShellParameters->StdErr != *OldStdErr) {

-    gEfiShellProtocol->CloseFile (ShellParameters->StdErr);

-    ShellParameters->StdErr = *OldStdErr;

-  }

-

-  if (gST->ConIn != SystemTableInfo->ConIn) {

-    CloseSimpleTextInOnFile (gST->ConIn);

-    gST->ConIn           = SystemTableInfo->ConIn;

-    gST->ConsoleInHandle = SystemTableInfo->ConInHandle;

-  }

-

-  if (gST->ConOut != SystemTableInfo->ConOut) {

-    CloseSimpleTextOutOnFile (gST->ConOut);

-    gST->ConOut           = SystemTableInfo->ConOut;

-    gST->ConsoleOutHandle = SystemTableInfo->ConOutHandle;

-  }

-

-  if (gST->StdErr != SystemTableInfo->ErrOut) {

-    CloseSimpleTextOutOnFile (gST->StdErr);

-    gST->StdErr              = SystemTableInfo->ErrOut;

-    gST->StandardErrorHandle = SystemTableInfo->ErrOutHandle;

-  }

-

-  CalculateEfiHdrCrc (&gST->Hdr);

-

-  return (EFI_SUCCESS);

-}

-

-/**

-  Function will replace the current Argc and Argv in the ShellParameters protocol

-  structure by parsing NewCommandLine.  The current values are returned to the

-  user.

-

-  If OldArgv or OldArgc is NULL then that value is not returned.

-

-  @param[in, out] ShellParameters        Pointer to parameter structure to modify.

-  @param[in] NewCommandLine              The new command line to parse and use.

-  @param[in] Type                        The type of operation.

-  @param[out] OldArgv                    Pointer to old list of parameters.

-  @param[out] OldArgc                    Pointer to old number of items in Argv list.

-

-

-  @retval   EFI_SUCCESS                 Operation was successful, Argv and Argc are valid.

-  @return   EFI_INVALID_PARAMETER       Some parameters are invalid.

-  @retval   EFI_OUT_OF_RESOURCES        A memory allocation failed.

-**/

-EFI_STATUS

-UpdateArgcArgv (

-  IN OUT EFI_SHELL_PARAMETERS_PROTOCOL  *ShellParameters,

-  IN CONST CHAR16                       *NewCommandLine,

-  IN SHELL_OPERATION_TYPES              Type,

-  OUT CHAR16                            ***OldArgv OPTIONAL,

-  OUT UINTN                             *OldArgc OPTIONAL

-  )

-{

-  BOOLEAN  StripParamQuotation;

-

-  ASSERT (ShellParameters != NULL);

-  StripParamQuotation = TRUE;

-

-  if (OldArgc != NULL) {

-    *OldArgc = ShellParameters->Argc;

-  }

-

-  if (OldArgc != NULL) {

-    *OldArgv = ShellParameters->Argv;

-  }

-

-  if (Type == Script_File_Name) {

-    StripParamQuotation = FALSE;

-  }

-

-  return ParseCommandLineToArgs (

-           NewCommandLine,

-           StripParamQuotation,

-           &(ShellParameters->Argv),

-           &(ShellParameters->Argc)

-           );

-}

-

-/**

-  Function will replace the current Argc and Argv in the ShellParameters protocol

-  structure with Argv and Argc.  The current values are de-allocated and the

-  OldArgv must not be deallocated by the caller.

-

-  @param[in, out] ShellParameters       pointer to parameter structure to modify

-  @param[in] OldArgv                    pointer to old list of parameters

-  @param[in] OldArgc                    pointer to old number of items in Argv list

-**/

-VOID

-RestoreArgcArgv (

-  IN OUT EFI_SHELL_PARAMETERS_PROTOCOL  *ShellParameters,

-  IN CHAR16                             ***OldArgv,

-  IN UINTN                              *OldArgc

-  )

-{

-  UINTN  LoopCounter;

-

-  ASSERT (ShellParameters != NULL);

-  ASSERT (OldArgv         != NULL);

-  ASSERT (OldArgc         != NULL);

-

-  if (ShellParameters->Argv != NULL) {

-    for ( LoopCounter = 0

-          ; LoopCounter < ShellParameters->Argc

-          ; LoopCounter++

-          )

-    {

-      FreePool (ShellParameters->Argv[LoopCounter]);

-    }

-

-    FreePool (ShellParameters->Argv);

-  }

-

-  ShellParameters->Argv = *OldArgv;

-  *OldArgv              = NULL;

-  ShellParameters->Argc = *OldArgc;

-  *OldArgc              = 0;

-}

+/** @file
+  Member functions of EFI_SHELL_PARAMETERS_PROTOCOL and functions for creation,
+  manipulation, and initialization of EFI_SHELL_PARAMETERS_PROTOCOL.
+
+  (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
+  Copyright (C) 2014, Red Hat, Inc.
+  (C) Copyright 2013 Hewlett-Packard Development Company, L.P.<BR>
+  Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "Shell.h"
+
+BOOLEAN  AsciiRedirection = FALSE;
+
+/**
+  Return the next parameter's end from a command line string.
+
+  @param[in] String        the string to parse
+**/
+CONST CHAR16 *
+FindEndOfParameter (
+  IN CONST CHAR16  *String
+  )
+{
+  CONST CHAR16  *First;
+  CONST CHAR16  *CloseQuote;
+
+  First = FindFirstCharacter (String, L" \"", L'^');
+
+  //
+  // nothing, all one parameter remaining
+  //
+  if (*First == CHAR_NULL) {
+    return (First);
+  }
+
+  //
+  // If space before a quote (or neither found, i.e. both CHAR_NULL),
+  // then that's the end.
+  //
+  if (*First == L' ') {
+    return (First);
+  }
+
+  CloseQuote = FindFirstCharacter (First+1, L"\"", L'^');
+
+  //
+  // We did not find a terminator...
+  //
+  if (*CloseQuote == CHAR_NULL) {
+    return (NULL);
+  }
+
+  return (FindEndOfParameter (CloseQuote+1));
+}
+
+/**
+  Return the next parameter from a command line string.
+
+  This function moves the next parameter from Walker into TempParameter and moves
+  Walker up past that parameter for recursive calling.  When the final parameter
+  is moved *Walker will be set to NULL;
+
+  Temp Parameter must be large enough to hold the parameter before calling this
+  function.
+
+  This will also remove all remaining ^ characters after processing.
+
+  @param[in, out] Walker          pointer to string of command line.  Adjusted to
+                                  remaining command line on return
+  @param[in, out] TempParameter   pointer to string of command line item extracted.
+  @param[in]      Length          buffer size of TempParameter.
+  @param[in]      StripQuotation  if TRUE then strip the quotation marks surrounding
+                                  the parameters.
+
+  @return   EFI_INVALID_PARAMETER A required parameter was NULL or pointed to a NULL or empty string.
+  @return   EFI_NOT_FOUND         A closing " could not be found on the specified string
+**/
+EFI_STATUS
+GetNextParameter (
+  IN OUT CHAR16   **Walker,
+  IN OUT CHAR16   **TempParameter,
+  IN CONST UINTN  Length,
+  IN BOOLEAN      StripQuotation
+  )
+{
+  CONST CHAR16  *NextDelim;
+
+  if (  (Walker           == NULL)
+     || (*Walker          == NULL)
+     || (TempParameter    == NULL)
+     || (*TempParameter   == NULL)
+        )
+  {
+    return (EFI_INVALID_PARAMETER);
+  }
+
+  //
+  // make sure we dont have any leading spaces
+  //
+  while ((*Walker)[0] == L' ') {
+    (*Walker)++;
+  }
+
+  //
+  // make sure we still have some params now...
+  //
+  if (StrLen (*Walker) == 0) {
+    DEBUG_CODE_BEGIN ();
+    *Walker = NULL;
+    DEBUG_CODE_END ();
+    return (EFI_INVALID_PARAMETER);
+  }
+
+  NextDelim = FindEndOfParameter (*Walker);
+
+  if (NextDelim == NULL) {
+    DEBUG_CODE_BEGIN ();
+    *Walker = NULL;
+    DEBUG_CODE_END ();
+    return (EFI_NOT_FOUND);
+  }
+
+  StrnCpyS (*TempParameter, Length / sizeof (CHAR16), (*Walker), NextDelim - *Walker);
+
+  //
+  // Add a CHAR_NULL if we didn't get one via the copy
+  //
+  if (*NextDelim != CHAR_NULL) {
+    (*TempParameter)[NextDelim - *Walker] = CHAR_NULL;
+  }
+
+  //
+  // Update Walker for the next iteration through the function
+  //
+  *Walker = (CHAR16 *)NextDelim;
+
+  //
+  // Remove any non-escaped quotes in the string
+  // Remove any remaining escape characters in the string
+  //
+  for (NextDelim = FindFirstCharacter (*TempParameter, L"\"^", CHAR_NULL)
+       ; *NextDelim != CHAR_NULL
+       ; NextDelim = FindFirstCharacter (NextDelim, L"\"^", CHAR_NULL)
+       )
+  {
+    if (*NextDelim == L'^') {
+      //
+      // eliminate the escape ^
+      //
+      CopyMem ((CHAR16 *)NextDelim, NextDelim + 1, StrSize (NextDelim + 1));
+      NextDelim++;
+    } else if (*NextDelim == L'\"') {
+      //
+      // eliminate the unescaped quote
+      //
+      if (StripQuotation) {
+        CopyMem ((CHAR16 *)NextDelim, NextDelim + 1, StrSize (NextDelim + 1));
+      } else {
+        NextDelim++;
+      }
+    }
+  }
+
+  return EFI_SUCCESS;
+}
+
+/**
+  Function to populate Argc and Argv.
+
+  This function parses the CommandLine and divides it into standard C style Argc/Argv
+  parameters for inclusion in EFI_SHELL_PARAMETERS_PROTOCOL.  this supports space
+  delimited and quote surrounded parameter definition.
+
+  All special character processing (alias, environment variable, redirection,
+  etc... must be complete before calling this API.
+
+  @param[in] CommandLine          String of command line to parse
+  @param[in] StripQuotation       if TRUE then strip the quotation marks surrounding
+                                  the parameters.
+  @param[in, out] Argv            pointer to array of strings; one for each parameter
+  @param[in, out] Argc            pointer to number of strings in Argv array
+
+  @return EFI_SUCCESS           the operation was successful
+  @return EFI_INVALID_PARAMETER some parameters are invalid
+  @return EFI_OUT_OF_RESOURCES  a memory allocation failed.
+**/
+EFI_STATUS
+ParseCommandLineToArgs (
+  IN CONST CHAR16  *CommandLine,
+  IN BOOLEAN       StripQuotation,
+  IN OUT CHAR16    ***Argv,
+  IN OUT UINTN     *Argc
+  )
+{
+  UINTN       Count;
+  CHAR16      *TempParameter;
+  CHAR16      *Walker;
+  CHAR16      *NewParam;
+  CHAR16      *NewCommandLine;
+  UINTN       Size;
+  EFI_STATUS  Status;
+
+  ASSERT (Argc != NULL);
+  ASSERT (Argv != NULL);
+
+  if ((CommandLine == NULL) || (StrLen (CommandLine) == 0)) {
+    (*Argc) = 0;
+    (*Argv) = NULL;
+    return (EFI_SUCCESS);
+  }
+
+  NewCommandLine = AllocateCopyPool (StrSize (CommandLine), CommandLine);
+  if (NewCommandLine == NULL) {
+    return (EFI_OUT_OF_RESOURCES);
+  }
+
+  TrimSpaces (&NewCommandLine);
+  Size          = StrSize (NewCommandLine);
+  TempParameter = AllocateZeroPool (Size);
+  if (TempParameter == NULL) {
+    SHELL_FREE_NON_NULL (NewCommandLine);
+    return (EFI_OUT_OF_RESOURCES);
+  }
+
+  for ( Count = 0,
+        Walker = (CHAR16 *)NewCommandLine
+        ; Walker != NULL && *Walker != CHAR_NULL
+        ; Count++
+        )
+  {
+    if (EFI_ERROR (GetNextParameter (&Walker, &TempParameter, Size, TRUE))) {
+      break;
+    }
+  }
+
+  //
+  // lets allocate the pointer array
+  //
+  (*Argv) = AllocateZeroPool ((Count)*sizeof (CHAR16 *));
+  if (*Argv == NULL) {
+    Status = EFI_OUT_OF_RESOURCES;
+    goto Done;
+  }
+
+  *Argc  = 0;
+  Walker = (CHAR16 *)NewCommandLine;
+  while (Walker != NULL && *Walker != CHAR_NULL) {
+    SetMem16 (TempParameter, Size, CHAR_NULL);
+    if (EFI_ERROR (GetNextParameter (&Walker, &TempParameter, Size, StripQuotation))) {
+      Status = EFI_INVALID_PARAMETER;
+      goto Done;
+    }
+
+    NewParam = AllocateCopyPool (StrSize (TempParameter), TempParameter);
+    if (NewParam == NULL) {
+      Status = EFI_OUT_OF_RESOURCES;
+      goto Done;
+    }
+
+    ((CHAR16 **)(*Argv))[(*Argc)] = NewParam;
+    (*Argc)++;
+  }
+
+  ASSERT (Count >= (*Argc));
+  Status = EFI_SUCCESS;
+
+Done:
+  SHELL_FREE_NON_NULL (TempParameter);
+  SHELL_FREE_NON_NULL (NewCommandLine);
+  return (Status);
+}
+
+/**
+  creates a new EFI_SHELL_PARAMETERS_PROTOCOL instance and populates it and then
+  installs it on our handle and if there is an existing version of the protocol
+  that one is cached for removal later.
+
+  @param[in, out] NewShellParameters on a successful return, a pointer to pointer
+                                     to the newly installed interface.
+  @param[in, out] RootShellInstance  on a successful return, pointer to boolean.
+                                     TRUE if this is the root shell instance.
+
+  @retval EFI_SUCCESS               the operation completed successfully.
+  @return other                     the operation failed.
+  @sa ReinstallProtocolInterface
+  @sa InstallProtocolInterface
+  @sa ParseCommandLineToArgs
+**/
+EFI_STATUS
+CreatePopulateInstallShellParametersProtocol (
+  IN OUT EFI_SHELL_PARAMETERS_PROTOCOL  **NewShellParameters,
+  IN OUT BOOLEAN                        *RootShellInstance
+  )
+{
+  EFI_STATUS                 Status;
+  EFI_LOADED_IMAGE_PROTOCOL  *LoadedImage;
+  CHAR16                     *FullCommandLine;
+  UINTN                      Size;
+
+  Size            = 0;
+  FullCommandLine = NULL;
+  LoadedImage     = NULL;
+
+  //
+  // Assert for valid parameters
+  //
+  ASSERT (NewShellParameters != NULL);
+  ASSERT (RootShellInstance  != NULL);
+
+  //
+  // See if we have a shell parameters placed on us
+  //
+  Status = gBS->OpenProtocol (
+                  gImageHandle,
+                  &gEfiShellParametersProtocolGuid,
+                  (VOID **)&ShellInfoObject.OldShellParameters,
+                  gImageHandle,
+                  NULL,
+                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
+                  );
+  //
+  // if we don't then we must be the root shell (error is expected)
+  //
+  if (EFI_ERROR (Status)) {
+    *RootShellInstance = TRUE;
+  }
+
+  //
+  // Allocate the new structure
+  //
+  *NewShellParameters = AllocateZeroPool (sizeof (EFI_SHELL_PARAMETERS_PROTOCOL));
+  if ((*NewShellParameters) == NULL) {
+    return (EFI_OUT_OF_RESOURCES);
+  }
+
+  //
+  // get loaded image protocol
+  //
+  Status = gBS->OpenProtocol (
+                  gImageHandle,
+                  &gEfiLoadedImageProtocolGuid,
+                  (VOID **)&LoadedImage,
+                  gImageHandle,
+                  NULL,
+                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
+                  );
+  ASSERT_EFI_ERROR (Status);
+  //
+  // Build the full command line
+  //
+  Status = SHELL_GET_ENVIRONMENT_VARIABLE (L"ShellOpt", &Size, FullCommandLine);
+  if (Status == EFI_BUFFER_TOO_SMALL) {
+    FullCommandLine = AllocateZeroPool (Size + LoadedImage->LoadOptionsSize);
+    Status          = SHELL_GET_ENVIRONMENT_VARIABLE (L"ShellOpt", &Size, FullCommandLine);
+  }
+
+  if (Status == EFI_NOT_FOUND) {
+    //
+    // no parameters via environment... ok
+    //
+  } else {
+    if (EFI_ERROR (Status)) {
+      return (Status);
+    }
+  }
+
+  if ((Size == 0) && (LoadedImage->LoadOptionsSize != 0)) {
+    ASSERT (FullCommandLine == NULL);
+    //
+    // Now we need to include a NULL terminator in the size.
+    //
+    Size            = LoadedImage->LoadOptionsSize + sizeof (FullCommandLine[0]);
+    FullCommandLine = AllocateZeroPool (Size);
+  }
+
+  if (FullCommandLine != NULL) {
+    CopyMem (FullCommandLine, LoadedImage->LoadOptions, LoadedImage->LoadOptionsSize);
+    //
+    // Populate Argc and Argv
+    //
+    Status = ParseCommandLineToArgs (
+               FullCommandLine,
+               TRUE,
+               &(*NewShellParameters)->Argv,
+               &(*NewShellParameters)->Argc
+               );
+
+    FreePool (FullCommandLine);
+
+    ASSERT_EFI_ERROR (Status);
+  } else {
+    (*NewShellParameters)->Argv = NULL;
+    (*NewShellParameters)->Argc = 0;
+  }
+
+  //
+  // Populate the 3 faked file systems...
+  //
+  if (*RootShellInstance) {
+    (*NewShellParameters)->StdIn  = &FileInterfaceStdIn;
+    (*NewShellParameters)->StdOut = &FileInterfaceStdOut;
+    (*NewShellParameters)->StdErr = &FileInterfaceStdErr;
+    Status                        = gBS->InstallProtocolInterface (
+                                           &gImageHandle,
+                                           &gEfiShellParametersProtocolGuid,
+                                           EFI_NATIVE_INTERFACE,
+                                           (VOID *)(*NewShellParameters)
+                                           );
+  } else {
+    //
+    // copy from the existing ones
+    //
+    (*NewShellParameters)->StdIn  = ShellInfoObject.OldShellParameters->StdIn;
+    (*NewShellParameters)->StdOut = ShellInfoObject.OldShellParameters->StdOut;
+    (*NewShellParameters)->StdErr = ShellInfoObject.OldShellParameters->StdErr;
+    Status                        = gBS->ReinstallProtocolInterface (
+                                           gImageHandle,
+                                           &gEfiShellParametersProtocolGuid,
+                                           (VOID *)ShellInfoObject.OldShellParameters,
+                                           (VOID *)(*NewShellParameters)
+                                           );
+  }
+
+  return (Status);
+}
+
+/**
+  frees all memory used by creation and installation of shell parameters protocol
+  and if there was an old version installed it will restore that one.
+
+  @param NewShellParameters the interface of EFI_SHELL_PARAMETERS_PROTOCOL that is
+  being cleaned up.
+
+  @retval EFI_SUCCESS     the cleanup was successful
+  @return other           the cleanup failed
+  @sa ReinstallProtocolInterface
+  @sa UninstallProtocolInterface
+**/
+EFI_STATUS
+CleanUpShellParametersProtocol (
+  IN OUT EFI_SHELL_PARAMETERS_PROTOCOL  *NewShellParameters
+  )
+{
+  EFI_STATUS  Status;
+  UINTN       LoopCounter;
+
+  //
+  // If the old exists we need to restore it
+  //
+  if (ShellInfoObject.OldShellParameters != NULL) {
+    Status = gBS->ReinstallProtocolInterface (
+                    gImageHandle,
+                    &gEfiShellParametersProtocolGuid,
+                    (VOID *)NewShellParameters,
+                    (VOID *)ShellInfoObject.OldShellParameters
+                    );
+    DEBUG_CODE (
+      ShellInfoObject.OldShellParameters = NULL;
+      );
+  } else {
+    //
+    // No old one, just uninstall us...
+    //
+    Status = gBS->UninstallProtocolInterface (
+                    gImageHandle,
+                    &gEfiShellParametersProtocolGuid,
+                    (VOID *)NewShellParameters
+                    );
+  }
+
+  if (NewShellParameters->Argv != NULL) {
+    for ( LoopCounter = 0
+          ; LoopCounter < NewShellParameters->Argc
+          ; LoopCounter++
+          )
+    {
+      FreePool (NewShellParameters->Argv[LoopCounter]);
+    }
+
+    FreePool (NewShellParameters->Argv);
+  }
+
+  FreePool (NewShellParameters);
+  return (Status);
+}
+
+/**
+  Determine if a file name represents a unicode file.
+
+  @param[in] FileName     Pointer to the filename to open.
+
+  @retval EFI_SUCCESS     The file is a unicode file.
+  @return An error upon failure.
+**/
+EFI_STATUS
+IsUnicodeFile (
+  IN CONST CHAR16  *FileName
+  )
+{
+  SHELL_FILE_HANDLE  Handle;
+  EFI_STATUS         Status;
+  UINT64             OriginalFilePosition;
+  UINTN              CharSize;
+  CHAR16             CharBuffer;
+
+  Status = gEfiShellProtocol->OpenFileByName (FileName, &Handle, EFI_FILE_MODE_READ);
+  if (EFI_ERROR (Status)) {
+    return (Status);
+  }
+
+  gEfiShellProtocol->GetFilePosition (Handle, &OriginalFilePosition);
+  gEfiShellProtocol->SetFilePosition (Handle, 0);
+  CharSize = sizeof (CHAR16);
+  Status   = gEfiShellProtocol->ReadFile (Handle, &CharSize, &CharBuffer);
+  if (EFI_ERROR (Status) || (CharBuffer != gUnicodeFileTag)) {
+    Status = EFI_BUFFER_TOO_SMALL;
+  }
+
+  gEfiShellProtocol->SetFilePosition (Handle, OriginalFilePosition);
+  gEfiShellProtocol->CloseFile (Handle);
+  return (Status);
+}
+
+/**
+  Strips out quotes sections of a string.
+
+  All of the characters between quotes is replaced with spaces.
+
+  @param[in, out] TheString  A pointer to the string to update.
+**/
+VOID
+StripQuotes (
+  IN OUT CHAR16  *TheString
+  )
+{
+  BOOLEAN  RemoveNow;
+
+  for (RemoveNow = FALSE; TheString != NULL && *TheString != CHAR_NULL; TheString++) {
+    if ((*TheString == L'^') && (*(TheString + 1) == L'\"')) {
+      TheString++;
+    } else if (*TheString == L'\"') {
+      RemoveNow = (BOOLEAN) !RemoveNow;
+    } else if (RemoveNow) {
+      *TheString = L' ';
+    }
+  }
+}
+
+/**
+  Calculate the 32-bit CRC in a EFI table using the service provided by the
+  gRuntime service.
+
+  @param  Hdr                    Pointer to an EFI standard header
+
+**/
+VOID
+CalculateEfiHdrCrc (
+  IN  OUT EFI_TABLE_HEADER  *Hdr
+  )
+{
+  UINT32  Crc;
+
+  Hdr->CRC32 = 0;
+
+  //
+  // If gBS->CalculateCrce32 () == CoreEfiNotAvailableYet () then
+  //  Crc will come back as zero if we set it to zero here
+  //
+  Crc = 0;
+  gBS->CalculateCrc32 ((UINT8 *)Hdr, Hdr->HeaderSize, &Crc);
+  Hdr->CRC32 = Crc;
+}
+
+/**
+  Fix a string to only have the file name, removing starting at the first space of whatever is quoted.
+
+  @param[in]  FileName    The filename to start with.
+
+  @retval NULL  FileName was invalid.
+  @return       The modified FileName.
+**/
+CHAR16 *
+FixFileName (
+  IN CHAR16  *FileName
+  )
+{
+  CHAR16  *Copy;
+  CHAR16  *TempLocation;
+
+  if (FileName == NULL) {
+    return (NULL);
+  }
+
+  if (FileName[0] == L'\"') {
+    Copy = FileName+1;
+    if ((TempLocation = StrStr (Copy, L"\"")) != NULL) {
+      TempLocation[0] = CHAR_NULL;
+    }
+  } else {
+    Copy = FileName;
+    while (Copy[0] == L' ') {
+      Copy++;
+    }
+
+    if ((TempLocation = StrStr (Copy, L" ")) != NULL) {
+      TempLocation[0] = CHAR_NULL;
+    }
+  }
+
+  if (Copy[0] == CHAR_NULL) {
+    return (NULL);
+  }
+
+  return (Copy);
+}
+
+/**
+  Fix a string to only have the environment variable name, removing starting at the first space of whatever is quoted and removing the leading and trailing %.
+
+  @param[in]  FileName    The filename to start with.
+
+  @retval NULL  FileName was invalid.
+  @return       The modified FileName.
+**/
+CHAR16 *
+FixVarName (
+  IN CHAR16  *FileName
+  )
+{
+  CHAR16  *Copy;
+  CHAR16  *TempLocation;
+
+  Copy = FileName;
+
+  if (FileName[0] == L'%') {
+    Copy = FileName+1;
+    if ((TempLocation = StrStr (Copy, L"%")) != NULL) {
+      TempLocation[0] = CHAR_NULL;
+    }
+  }
+
+  return (FixFileName (Copy));
+}
+
+/**
+  Write the unicode file tag to the specified file.
+
+  It is the caller's responsibility to ensure that
+  ShellInfoObject.NewEfiShellProtocol has been initialized before calling this
+  function.
+
+  @param[in] FileHandle  The file to write the unicode file tag to.
+
+  @return  Status code from ShellInfoObject.NewEfiShellProtocol->WriteFile.
+**/
+EFI_STATUS
+WriteFileTag (
+  IN SHELL_FILE_HANDLE  FileHandle
+  )
+{
+  CHAR16      FileTag;
+  UINTN       Size;
+  EFI_STATUS  Status;
+
+  FileTag = gUnicodeFileTag;
+  Size    = sizeof FileTag;
+  Status  = ShellInfoObject.NewEfiShellProtocol->WriteFile (
+                                                   FileHandle,
+                                                   &Size,
+                                                   &FileTag
+                                                   );
+  ASSERT (EFI_ERROR (Status) || Size == sizeof FileTag);
+  return Status;
+}
+
+/**
+  Function will replace the current StdIn and StdOut in the ShellParameters protocol
+  structure by parsing NewCommandLine.  The current values are returned to the
+  user.
+
+  This will also update the system table.
+
+  @param[in, out] ShellParameters        Pointer to parameter structure to modify.
+  @param[in] NewCommandLine              The new command line to parse and use.
+  @param[out] OldStdIn                   Pointer to old StdIn.
+  @param[out] OldStdOut                  Pointer to old StdOut.
+  @param[out] OldStdErr                  Pointer to old StdErr.
+  @param[out] SystemTableInfo            Pointer to old system table information.
+
+  @retval   EFI_SUCCESS                 Operation was successful, Argv and Argc are valid.
+  @retval   EFI_OUT_OF_RESOURCES        A memory allocation failed.
+**/
+EFI_STATUS
+UpdateStdInStdOutStdErr (
+  IN OUT EFI_SHELL_PARAMETERS_PROTOCOL  *ShellParameters,
+  IN CHAR16                             *NewCommandLine,
+  OUT SHELL_FILE_HANDLE                 *OldStdIn,
+  OUT SHELL_FILE_HANDLE                 *OldStdOut,
+  OUT SHELL_FILE_HANDLE                 *OldStdErr,
+  OUT SYSTEM_TABLE_INFO                 *SystemTableInfo
+  )
+{
+  CHAR16             *CommandLineCopy;
+  CHAR16             *CommandLineWalker;
+  CHAR16             *StdErrFileName;
+  CHAR16             *StdOutFileName;
+  CHAR16             *StdInFileName;
+  CHAR16             *StdInVarName;
+  CHAR16             *StdOutVarName;
+  CHAR16             *StdErrVarName;
+  EFI_STATUS         Status;
+  SHELL_FILE_HANDLE  TempHandle;
+  UINT64             FileSize;
+  BOOLEAN            OutUnicode;
+  BOOLEAN            InUnicode;
+  BOOLEAN            ErrUnicode;
+  BOOLEAN            OutAppend;
+  BOOLEAN            ErrAppend;
+  UINTN              Size;
+  SPLIT_LIST         *Split;
+  CHAR16             *FirstLocation;
+  BOOLEAN            Volatile;
+
+  OutUnicode       = TRUE;
+  InUnicode        = TRUE;
+  AsciiRedirection = FALSE;
+  ErrUnicode       = TRUE;
+  StdInVarName     = NULL;
+  StdOutVarName    = NULL;
+  StdErrVarName    = NULL;
+  StdErrFileName   = NULL;
+  StdInFileName    = NULL;
+  StdOutFileName   = NULL;
+  ErrAppend        = FALSE;
+  OutAppend        = FALSE;
+  CommandLineCopy  = NULL;
+  FirstLocation    = NULL;
+
+  if ((ShellParameters == NULL) || (SystemTableInfo == NULL) || (OldStdIn == NULL) || (OldStdOut == NULL) || (OldStdErr == NULL)) {
+    return (EFI_INVALID_PARAMETER);
+  }
+
+  SystemTableInfo->ConIn        = gST->ConIn;
+  SystemTableInfo->ConInHandle  = gST->ConsoleInHandle;
+  SystemTableInfo->ConOut       = gST->ConOut;
+  SystemTableInfo->ConOutHandle = gST->ConsoleOutHandle;
+  SystemTableInfo->ErrOut       = gST->StdErr;
+  SystemTableInfo->ErrOutHandle = gST->StandardErrorHandle;
+  *OldStdIn                     = ShellParameters->StdIn;
+  *OldStdOut                    = ShellParameters->StdOut;
+  *OldStdErr                    = ShellParameters->StdErr;
+
+  if (NewCommandLine == NULL) {
+    return (EFI_SUCCESS);
+  }
+
+  CommandLineCopy = StrnCatGrow (&CommandLineCopy, NULL, NewCommandLine, 0);
+  if (CommandLineCopy == NULL) {
+    return (EFI_OUT_OF_RESOURCES);
+  }
+
+  Status        = EFI_SUCCESS;
+  Split         = NULL;
+  FirstLocation = CommandLineCopy + StrLen (CommandLineCopy);
+
+  StripQuotes (CommandLineCopy);
+
+  if (!IsListEmpty (&ShellInfoObject.SplitList.Link)) {
+    Split = (SPLIT_LIST *)GetFirstNode (&ShellInfoObject.SplitList.Link);
+    if ((Split != NULL) && (Split->SplitStdIn != NULL)) {
+      ShellParameters->StdIn = Split->SplitStdIn;
+    }
+
+    if ((Split != NULL) && (Split->SplitStdOut != NULL)) {
+      ShellParameters->StdOut = Split->SplitStdOut;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 2>>v ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 12, L' ');
+    StdErrVarName = CommandLineWalker += 6;
+    ErrAppend     = TRUE;
+    if (StrStr (CommandLineWalker, L" 2>>v ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 1>>v ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 12, L' ');
+    StdOutVarName = CommandLineWalker += 6;
+    OutAppend     = TRUE;
+    if (StrStr (CommandLineWalker, L" 1>>v ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  } else if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" >>v ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 10, L' ');
+    StdOutVarName = CommandLineWalker += 5;
+    OutAppend     = TRUE;
+    if (StrStr (CommandLineWalker, L" >>v ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  } else if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" >v ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 8, L' ');
+    StdOutVarName = CommandLineWalker += 4;
+    OutAppend     = FALSE;
+    if (StrStr (CommandLineWalker, L" >v ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 1>>a ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 12, L' ');
+    StdOutFileName = CommandLineWalker += 6;
+    OutAppend      = TRUE;
+    OutUnicode     = FALSE;
+    if (StrStr (CommandLineWalker, L" 1>>a ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 1>> ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 10, L' ');
+    if (StdOutFileName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdOutFileName = CommandLineWalker += 5;
+      OutAppend      = TRUE;
+    }
+
+    if (StrStr (CommandLineWalker, L" 1>> ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" >> ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 8, L' ');
+    if (StdOutFileName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdOutFileName = CommandLineWalker += 4;
+      OutAppend      = TRUE;
+    }
+
+    if (StrStr (CommandLineWalker, L" >> ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" >>a ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 10, L' ');
+    if (StdOutFileName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdOutFileName = CommandLineWalker += 5;
+      OutAppend      = TRUE;
+      OutUnicode     = FALSE;
+    }
+
+    if (StrStr (CommandLineWalker, L" >>a ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 1>a ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 10, L' ');
+    if (StdOutFileName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdOutFileName = CommandLineWalker += 5;
+      OutAppend      = FALSE;
+      OutUnicode     = FALSE;
+    }
+
+    if (StrStr (CommandLineWalker, L" 1>a ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" >a ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 8, L' ');
+    if (StdOutFileName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdOutFileName = CommandLineWalker += 4;
+      OutAppend      = FALSE;
+      OutUnicode     = FALSE;
+    }
+
+    if (StrStr (CommandLineWalker, L" >a ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 2>> ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 10, L' ');
+    if (StdErrFileName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdErrFileName = CommandLineWalker += 5;
+      ErrAppend      = TRUE;
+    }
+
+    if (StrStr (CommandLineWalker, L" 2>> ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 2>v ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 10, L' ');
+    if (StdErrVarName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdErrVarName = CommandLineWalker += 5;
+      ErrAppend     = FALSE;
+    }
+
+    if (StrStr (CommandLineWalker, L" 2>v ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 1>v ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 10, L' ');
+    if (StdOutVarName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdOutVarName = CommandLineWalker += 5;
+      OutAppend     = FALSE;
+    }
+
+    if (StrStr (CommandLineWalker, L" 1>v ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 2>a ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 10, L' ');
+    if (StdErrFileName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdErrFileName = CommandLineWalker += 5;
+      ErrAppend      = FALSE;
+      ErrUnicode     = FALSE;
+    }
+
+    if (StrStr (CommandLineWalker, L" 2>a ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 2> ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 8, L' ');
+    if (StdErrFileName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdErrFileName = CommandLineWalker += 4;
+      ErrAppend      = FALSE;
+    }
+
+    if (StrStr (CommandLineWalker, L" 2> ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" 1> ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 8, L' ');
+    if (StdOutFileName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdOutFileName = CommandLineWalker += 4;
+      OutAppend      = FALSE;
+    }
+
+    if (StrStr (CommandLineWalker, L" 1> ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" > ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 6, L' ');
+    if (StdOutFileName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdOutFileName = CommandLineWalker += 3;
+      OutAppend      = FALSE;
+    }
+
+    if (StrStr (CommandLineWalker, L" > ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" < ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 6, L' ');
+    if (StdInFileName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdInFileName = CommandLineWalker += 3;
+    }
+
+    if (StrStr (CommandLineWalker, L" < ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" <a ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 8, L' ');
+    if (StdInFileName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdInFileName    = CommandLineWalker += 4;
+      InUnicode        = FALSE;
+      AsciiRedirection = TRUE;
+    }
+
+    if (StrStr (CommandLineWalker, L" <a ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  if (!EFI_ERROR (Status) && ((CommandLineWalker = StrStr (CommandLineCopy, L" <v ")) != NULL)) {
+    FirstLocation = MIN (CommandLineWalker, FirstLocation);
+    SetMem16 (CommandLineWalker, 8, L' ');
+    if (StdInVarName != NULL) {
+      Status = EFI_INVALID_PARAMETER;
+    } else {
+      StdInVarName = CommandLineWalker += 4;
+    }
+
+    if (StrStr (CommandLineWalker, L" <v ") != NULL) {
+      Status = EFI_NOT_FOUND;
+    }
+  }
+
+  //
+  // re-populate the string to support any filenames that were in quotes.
+  //
+  StrnCpyS (CommandLineCopy, StrSize (CommandLineCopy)/sizeof (CHAR16), NewCommandLine, StrLen (NewCommandLine));
+
+  if (  (FirstLocation != CommandLineCopy + StrLen (CommandLineCopy))
+     && (((UINTN)FirstLocation - (UINTN)CommandLineCopy)/sizeof (CHAR16) < StrLen (NewCommandLine))
+        )
+  {
+    *(NewCommandLine + ((UINTN)FirstLocation - (UINTN)CommandLineCopy)/sizeof (CHAR16)) = CHAR_NULL;
+  }
+
+  if (!EFI_ERROR (Status)) {
+    if (StdErrFileName != NULL) {
+      if ((StdErrFileName    = FixFileName (StdErrFileName)) == NULL) {
+        Status = EFI_INVALID_PARAMETER;
+      }
+    }
+
+    if (StdOutFileName != NULL) {
+      if ((StdOutFileName    = FixFileName (StdOutFileName)) == NULL) {
+        Status = EFI_INVALID_PARAMETER;
+      }
+    }
+
+    if (StdInFileName  != NULL) {
+      if ((StdInFileName     = FixFileName (StdInFileName)) == NULL) {
+        Status = EFI_INVALID_PARAMETER;
+      }
+    }
+
+    if (StdErrVarName  != NULL) {
+      if ((StdErrVarName     = FixVarName (StdErrVarName)) == NULL) {
+        Status = EFI_INVALID_PARAMETER;
+      }
+    }
+
+    if (StdOutVarName  != NULL) {
+      if ((StdOutVarName     = FixVarName (StdOutVarName)) == NULL) {
+        Status = EFI_INVALID_PARAMETER;
+      }
+    }
+
+    if (StdInVarName   != NULL) {
+      if ((StdInVarName      = FixVarName (StdInVarName)) == NULL) {
+        Status = EFI_INVALID_PARAMETER;
+      }
+    }
+
+    //
+    // Verify not the same and not duplicating something from a split
+    //
+    if (
+          //
+          // Check that no 2 filenames are the same
+          //
+          ((StdErrFileName != NULL) && (StdOutFileName != NULL) && (StringNoCaseCompare (&StdErrFileName, &StdOutFileName) == 0))
+       || ((StdErrFileName != NULL) && (StdInFileName != NULL) && (StringNoCaseCompare (&StdErrFileName, &StdInFileName) == 0))
+       || ((StdOutFileName != NULL) && (StdInFileName != NULL) && (StringNoCaseCompare (&StdOutFileName, &StdInFileName) == 0))
+          //
+          // Check that no 2 variable names are the same
+          //
+       || ((StdErrVarName  != NULL) && (StdInVarName  != NULL) && (StringNoCaseCompare (&StdErrVarName, &StdInVarName) == 0))
+       || ((StdOutVarName  != NULL) && (StdInVarName != NULL) && (StringNoCaseCompare (&StdOutVarName, &StdInVarName) == 0))
+       || ((StdErrVarName  != NULL) && (StdOutVarName != NULL) && (StringNoCaseCompare (&StdErrVarName, &StdOutVarName) == 0))
+          //
+          // When a split (using | operator) is in place some are not allowed
+          //
+       || ((Split != NULL) && (Split->SplitStdIn  != NULL) && ((StdInVarName  != NULL) || (StdInFileName  != NULL)))
+       || ((Split != NULL) && (Split->SplitStdOut != NULL) && ((StdOutVarName != NULL) || (StdOutFileName != NULL)))
+          //
+          // Check that nothing is trying to be output to 2 locations.
+          //
+       || ((StdErrFileName != NULL) && (StdErrVarName != NULL))
+       || ((StdOutFileName != NULL) && (StdOutVarName != NULL))
+       || ((StdInFileName  != NULL) && (StdInVarName  != NULL))
+          //
+          // Check for no volatile environment variables
+          //
+       || ((StdErrVarName  != NULL) && !EFI_ERROR (IsVolatileEnv (StdErrVarName, &Volatile)) && !Volatile)
+       || ((StdOutVarName  != NULL) && !EFI_ERROR (IsVolatileEnv (StdOutVarName, &Volatile)) && !Volatile)
+          //
+          // Cant redirect during a reconnect operation.
+          //
+       || (  (StrStr (NewCommandLine, L"connect -r") != NULL)
+          && ((StdOutVarName != NULL) || (StdOutFileName != NULL) || (StdErrFileName != NULL) || (StdErrVarName != NULL)))
+          //
+          // Check that filetypes (Unicode/Ascii) do not change during an append
+          //
+       || ((StdOutFileName != NULL) && OutUnicode && OutAppend && (!EFI_ERROR (ShellFileExists (StdOutFileName)) && EFI_ERROR (IsUnicodeFile (StdOutFileName))))
+       || ((StdErrFileName != NULL) && ErrUnicode && ErrAppend && (!EFI_ERROR (ShellFileExists (StdErrFileName)) && EFI_ERROR (IsUnicodeFile (StdErrFileName))))
+       || ((StdOutFileName != NULL) && !OutUnicode && OutAppend && (!EFI_ERROR (ShellFileExists (StdOutFileName)) && !EFI_ERROR (IsUnicodeFile (StdOutFileName))))
+       || ((StdErrFileName != NULL) && !ErrUnicode && ErrAppend && (!EFI_ERROR (ShellFileExists (StdErrFileName)) && !EFI_ERROR (IsUnicodeFile (StdErrFileName))))
+          )
+    {
+      Status                  = EFI_INVALID_PARAMETER;
+      ShellParameters->StdIn  = *OldStdIn;
+      ShellParameters->StdOut = *OldStdOut;
+      ShellParameters->StdErr = *OldStdErr;
+    } else if (!EFI_ERROR (Status)) {
+      //
+      // Open the Std<Whatever> and we should not have conflicts here...
+      //
+
+      //
+      // StdErr to a file
+      //
+      if (StdErrFileName != NULL) {
+        if (!ErrAppend) {
+          //
+          // delete existing file.
+          //
+          ShellInfoObject.NewEfiShellProtocol->DeleteFileByName (StdErrFileName);
+        }
+
+        Status = ShellOpenFileByName (StdErrFileName, &TempHandle, EFI_FILE_MODE_WRITE|EFI_FILE_MODE_READ|EFI_FILE_MODE_CREATE, 0);
+        if (!ErrAppend && ErrUnicode && !EFI_ERROR (Status)) {
+          Status = WriteFileTag (TempHandle);
+        }
+
+        if (!ErrUnicode && !EFI_ERROR (Status)) {
+          TempHandle = CreateFileInterfaceFile (TempHandle, FALSE);
+          ASSERT (TempHandle != NULL);
+        }
+
+        if (!EFI_ERROR (Status)) {
+          ShellParameters->StdErr = TempHandle;
+          gST->StdErr             = CreateSimpleTextOutOnFile (TempHandle, &gST->StandardErrorHandle, gST->StdErr);
+        }
+      }
+
+      //
+      // StdOut to a file
+      //
+      if (!EFI_ERROR (Status) && (StdOutFileName != NULL)) {
+        if (!OutAppend) {
+          //
+          // delete existing file.
+          //
+          ShellInfoObject.NewEfiShellProtocol->DeleteFileByName (StdOutFileName);
+        }
+
+        Status = ShellOpenFileByName (StdOutFileName, &TempHandle, EFI_FILE_MODE_WRITE|EFI_FILE_MODE_READ|EFI_FILE_MODE_CREATE, 0);
+        if (TempHandle == NULL) {
+          Status = EFI_INVALID_PARAMETER;
+        } else {
+          if (gUnicodeCollation->MetaiMatch (gUnicodeCollation, StdOutFileName, L"NUL")) {
+            // no-op
+          } else if (!OutAppend && OutUnicode && !EFI_ERROR (Status)) {
+            Status = WriteFileTag (TempHandle);
+          } else if (OutAppend) {
+            Status = ShellInfoObject.NewEfiShellProtocol->GetFileSize (TempHandle, &FileSize);
+            if (!EFI_ERROR (Status)) {
+              //
+              // When appending to a new unicode file, write the file tag.
+              // Otherwise (ie. when appending to a new ASCII file, or an
+              // existent file with any encoding), just seek to the end.
+              //
+              Status = (FileSize == 0 && OutUnicode) ?
+                       WriteFileTag (TempHandle) :
+                       ShellInfoObject.NewEfiShellProtocol->SetFilePosition (
+                                                              TempHandle,
+                                                              FileSize
+                                                              );
+            }
+          }
+
+          if (!OutUnicode && !EFI_ERROR (Status)) {
+            TempHandle = CreateFileInterfaceFile (TempHandle, FALSE);
+            ASSERT (TempHandle != NULL);
+          }
+
+          if (!EFI_ERROR (Status)) {
+            ShellParameters->StdOut = TempHandle;
+            gST->ConOut             = CreateSimpleTextOutOnFile (TempHandle, &gST->ConsoleOutHandle, gST->ConOut);
+          }
+        }
+      }
+
+      //
+      // StdOut to a var
+      //
+      if (!EFI_ERROR (Status) && (StdOutVarName != NULL)) {
+        if (!OutAppend) {
+          //
+          // delete existing variable.
+          //
+          SHELL_SET_ENVIRONMENT_VARIABLE_V (StdOutVarName, 0, L"");
+        }
+
+        TempHandle = CreateFileInterfaceEnv (StdOutVarName);
+        ASSERT (TempHandle != NULL);
+        ShellParameters->StdOut = TempHandle;
+        gST->ConOut             = CreateSimpleTextOutOnFile (TempHandle, &gST->ConsoleOutHandle, gST->ConOut);
+      }
+
+      //
+      // StdErr to a var
+      //
+      if (!EFI_ERROR (Status) && (StdErrVarName != NULL)) {
+        if (!ErrAppend) {
+          //
+          // delete existing variable.
+          //
+          SHELL_SET_ENVIRONMENT_VARIABLE_V (StdErrVarName, 0, L"");
+        }
+
+        TempHandle = CreateFileInterfaceEnv (StdErrVarName);
+        ASSERT (TempHandle != NULL);
+        ShellParameters->StdErr = TempHandle;
+        gST->StdErr             = CreateSimpleTextOutOnFile (TempHandle, &gST->StandardErrorHandle, gST->StdErr);
+      }
+
+      //
+      // StdIn from a var
+      //
+      if (!EFI_ERROR (Status) && (StdInVarName != NULL)) {
+        TempHandle = CreateFileInterfaceEnv (StdInVarName);
+        if (TempHandle == NULL) {
+          Status = EFI_OUT_OF_RESOURCES;
+        } else {
+          if (!InUnicode) {
+            TempHandle = CreateFileInterfaceFile (TempHandle, FALSE);
+          }
+
+          Size = 0;
+          if ((TempHandle == NULL) || (((EFI_FILE_PROTOCOL *)TempHandle)->Read (TempHandle, &Size, NULL) != EFI_BUFFER_TOO_SMALL)) {
+            Status = EFI_INVALID_PARAMETER;
+          } else {
+            ShellParameters->StdIn = TempHandle;
+            gST->ConIn             = CreateSimpleTextInOnFile (TempHandle, &gST->ConsoleInHandle);
+          }
+        }
+      }
+
+      //
+      // StdIn from a file
+      //
+      if (!EFI_ERROR (Status) && (StdInFileName != NULL)) {
+        Status = ShellOpenFileByName (
+                   StdInFileName,
+                   &TempHandle,
+                   EFI_FILE_MODE_READ,
+                   0
+                   );
+        if (!EFI_ERROR (Status)) {
+          if (!InUnicode) {
+            //
+            // Create the ASCII->Unicode conversion layer
+            //
+            TempHandle = CreateFileInterfaceFile (TempHandle, FALSE);
+          }
+
+          ShellParameters->StdIn = TempHandle;
+          gST->ConIn             = CreateSimpleTextInOnFile (TempHandle, &gST->ConsoleInHandle);
+        }
+      }
+    }
+  }
+
+  FreePool (CommandLineCopy);
+
+  CalculateEfiHdrCrc (&gST->Hdr);
+
+  if ((gST->ConIn == NULL) || (gST->ConOut == NULL)) {
+    Status = EFI_OUT_OF_RESOURCES;
+  }
+
+  if (Status == EFI_NOT_FOUND) {
+    ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_SHELL_REDUNDA_REDIR), ShellInfoObject.HiiHandle);
+  } else if (EFI_ERROR (Status)) {
+    ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_SHELL_INVALID_REDIR), ShellInfoObject.HiiHandle);
+  }
+
+  return (Status);
+}
+
+/**
+  Function will replace the current StdIn and StdOut in the ShellParameters protocol
+  structure with StdIn and StdOut.  The current values are de-allocated.
+
+  @param[in, out] ShellParameters      Pointer to parameter structure to modify.
+  @param[in] OldStdIn                  Pointer to old StdIn.
+  @param[in] OldStdOut                 Pointer to old StdOut.
+  @param[in] OldStdErr                 Pointer to old StdErr.
+  @param[in] SystemTableInfo           Pointer to old system table information.
+**/
+EFI_STATUS
+RestoreStdInStdOutStdErr (
+  IN OUT EFI_SHELL_PARAMETERS_PROTOCOL  *ShellParameters,
+  IN  SHELL_FILE_HANDLE                 *OldStdIn,
+  IN  SHELL_FILE_HANDLE                 *OldStdOut,
+  IN  SHELL_FILE_HANDLE                 *OldStdErr,
+  IN  SYSTEM_TABLE_INFO                 *SystemTableInfo
+  )
+{
+  SPLIT_LIST  *Split;
+
+  if (  (ShellParameters == NULL)
+     || (OldStdIn        == NULL)
+     || (OldStdOut       == NULL)
+     || (OldStdErr       == NULL)
+     || (SystemTableInfo == NULL))
+  {
+    return (EFI_INVALID_PARAMETER);
+  }
+
+  if (!IsListEmpty (&ShellInfoObject.SplitList.Link)) {
+    Split = (SPLIT_LIST *)GetFirstNode (&ShellInfoObject.SplitList.Link);
+  } else {
+    Split = NULL;
+  }
+
+  if (ShellParameters->StdIn  != *OldStdIn) {
+    if (((Split != NULL) && (Split->SplitStdIn != ShellParameters->StdIn)) || (Split == NULL)) {
+      gEfiShellProtocol->CloseFile (ShellParameters->StdIn);
+    }
+
+    ShellParameters->StdIn = *OldStdIn;
+  }
+
+  if (ShellParameters->StdOut != *OldStdOut) {
+    if (((Split != NULL) && (Split->SplitStdOut != ShellParameters->StdOut)) || (Split == NULL)) {
+      gEfiShellProtocol->CloseFile (ShellParameters->StdOut);
+    }
+
+    ShellParameters->StdOut = *OldStdOut;
+  }
+
+  if (ShellParameters->StdErr != *OldStdErr) {
+    gEfiShellProtocol->CloseFile (ShellParameters->StdErr);
+    ShellParameters->StdErr = *OldStdErr;
+  }
+
+  if (gST->ConIn != SystemTableInfo->ConIn) {
+    CloseSimpleTextInOnFile (gST->ConIn);
+    gST->ConIn           = SystemTableInfo->ConIn;
+    gST->ConsoleInHandle = SystemTableInfo->ConInHandle;
+  }
+
+  if (gST->ConOut != SystemTableInfo->ConOut) {
+    CloseSimpleTextOutOnFile (gST->ConOut);
+    gST->ConOut           = SystemTableInfo->ConOut;
+    gST->ConsoleOutHandle = SystemTableInfo->ConOutHandle;
+  }
+
+  if (gST->StdErr != SystemTableInfo->ErrOut) {
+    CloseSimpleTextOutOnFile (gST->StdErr);
+    gST->StdErr              = SystemTableInfo->ErrOut;
+    gST->StandardErrorHandle = SystemTableInfo->ErrOutHandle;
+  }
+
+  CalculateEfiHdrCrc (&gST->Hdr);
+
+  return (EFI_SUCCESS);
+}
+
+/**
+  Function will replace the current Argc and Argv in the ShellParameters protocol
+  structure by parsing NewCommandLine.  The current values are returned to the
+  user.
+
+  If OldArgv or OldArgc is NULL then that value is not returned.
+
+  @param[in, out] ShellParameters        Pointer to parameter structure to modify.
+  @param[in] NewCommandLine              The new command line to parse and use.
+  @param[in] Type                        The type of operation.
+  @param[out] OldArgv                    Pointer to old list of parameters.
+  @param[out] OldArgc                    Pointer to old number of items in Argv list.
+
+
+  @retval   EFI_SUCCESS                 Operation was successful, Argv and Argc are valid.
+  @return   EFI_INVALID_PARAMETER       Some parameters are invalid.
+  @retval   EFI_OUT_OF_RESOURCES        A memory allocation failed.
+**/
+EFI_STATUS
+UpdateArgcArgv (
+  IN OUT EFI_SHELL_PARAMETERS_PROTOCOL  *ShellParameters,
+  IN CONST CHAR16                       *NewCommandLine,
+  IN SHELL_OPERATION_TYPES              Type,
+  OUT CHAR16                            ***OldArgv OPTIONAL,
+  OUT UINTN                             *OldArgc OPTIONAL
+  )
+{
+  BOOLEAN  StripParamQuotation;
+
+  ASSERT (ShellParameters != NULL);
+  StripParamQuotation = TRUE;
+
+  if (OldArgc != NULL) {
+    *OldArgc = ShellParameters->Argc;
+  }
+
+  if (OldArgc != NULL) {
+    *OldArgv = ShellParameters->Argv;
+  }
+
+  if (Type == Script_File_Name) {
+    StripParamQuotation = FALSE;
+  }
+
+  return ParseCommandLineToArgs (
+           NewCommandLine,
+           StripParamQuotation,
+           &(ShellParameters->Argv),
+           &(ShellParameters->Argc)
+           );
+}
+
+/**
+  Function will replace the current Argc and Argv in the ShellParameters protocol
+  structure with Argv and Argc.  The current values are de-allocated and the
+  OldArgv must not be deallocated by the caller.
+
+  @param[in, out] ShellParameters       pointer to parameter structure to modify
+  @param[in] OldArgv                    pointer to old list of parameters
+  @param[in] OldArgc                    pointer to old number of items in Argv list
+**/
+VOID
+RestoreArgcArgv (
+  IN OUT EFI_SHELL_PARAMETERS_PROTOCOL  *ShellParameters,
+  IN CHAR16                             ***OldArgv,
+  IN UINTN                              *OldArgc
+  )
+{
+  UINTN  LoopCounter;
+
+  ASSERT (ShellParameters != NULL);
+  ASSERT (OldArgv         != NULL);
+  ASSERT (OldArgc         != NULL);
+
+  if (ShellParameters->Argv != NULL) {
+    for ( LoopCounter = 0
+          ; LoopCounter < ShellParameters->Argc
+          ; LoopCounter++
+          )
+    {
+      FreePool (ShellParameters->Argv[LoopCounter]);
+    }
+
+    FreePool (ShellParameters->Argv);
+  }
+
+  ShellParameters->Argv = *OldArgv;
+  *OldArgv              = NULL;
+  ShellParameters->Argc = *OldArgc;
+  *OldArgc              = 0;
+}