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/** @file
LZMA Decompress GUIDed Section Extraction Library
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Uefi.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/ExtractGuidedSectionLib.h>
#include <Pi/PiFirmwareFile.h>
#include <Guid/LzmaDecompress.h>
#include "LzmaDecompress.h"
STATIC
RETURN_STATUS
EFIAPI
LzmaGuidedSectionGetCompressedLocation (
IN CONST VOID *InputSection,
OUT VOID **LmzaCompressedData,
OUT UINT32 *LmzaCompressedDataSize OPTIONAL
)
{
if (!CompareGuid (
&gLzmaCustomDecompressGuid,
&(((EFI_GUID_DEFINED_SECTION *) InputSection)->SectionDefinitionGuid))) {
return RETURN_INVALID_PARAMETER;
}
//
// Retrieve the size and attribute of the input section data.
//
*LmzaCompressedData =
(VOID*) (
(UINT8 *) InputSection +
((EFI_GUID_DEFINED_SECTION *) InputSection)->DataOffset
);
if (LmzaCompressedDataSize != NULL) {
*LmzaCompressedDataSize =
(UINT32)(
(
(*(UINT32 *) (((EFI_COMMON_SECTION_HEADER *) InputSection)->Size)) &
0x00ffffff
) -
((EFI_GUID_DEFINED_SECTION *) InputSection)->DataOffset
);
}
return RETURN_SUCCESS;
}
/**
The implementation of 'GetInfo' for Guided Section
Extraction of LZMA compression.
@param InputSection Buffer containing the input GUIDed section to be processed.
@param OutputBufferSize The size of OutputBuffer.
@param ScratchBufferSize The size of ScratchBuffer.
@param SectionAttribute The attribute of the input guided section.
@retval RETURN_SUCCESS The size of destination buffer and the size of scratch buffer are successull retrieved.
@retval RETURN_INVALID_PARAMETER The source data is corrupted, or
The GUID in InputSection does not match this instance guid.
**/
RETURN_STATUS
EFIAPI
LzmaGuidedSectionGetInfo (
IN CONST VOID *InputSection,
OUT UINT32 *OutputBufferSize,
OUT UINT32 *ScratchBufferSize,
OUT UINT16 *SectionAttribute
)
{
RETURN_STATUS Status;
VOID *LzmaInput;
UINT32 LzmaInputSize;
Status = LzmaGuidedSectionGetCompressedLocation(
InputSection,
&LzmaInput,
&LzmaInputSize
);
if (RETURN_ERROR (Status)) {
return Status;
}
*SectionAttribute = ((EFI_GUID_DEFINED_SECTION *) InputSection)->Attributes;
return LzmaUefiDecompressGetInfo (
LzmaInput,
LzmaInputSize,
OutputBufferSize,
ScratchBufferSize
);
}
/**
The implementation of Guided Section Extraction
for LZMA compression.
@param InputSection Buffer containing the input GUIDed section to be processed.
@param OutputBuffer OutputBuffer to point to the start of the section's contents.
if guided data is not prcessed. Otherwise,
OutputBuffer to contain the output data, which is allocated by the caller.
@param ScratchBuffer A pointer to a caller-allocated buffer for function internal use.
@param AuthenticationStatus A pointer to a caller-allocated UINT32 that indicates the
authentication status of the output buffer.
@retval RETURN_SUCCESS Decompression is successfull
@retval RETURN_INVALID_PARAMETER The source data is corrupted, or
The GUID in InputSection does not match this instance guid.
**/
RETURN_STATUS
EFIAPI
LzmaGuidedSectionExtraction (
IN CONST VOID *InputSection,
OUT VOID **OutputBuffer,
IN VOID *ScratchBuffer, OPTIONAL
OUT UINT32 *AuthenticationStatus
)
{
RETURN_STATUS Status;
VOID *LzmaInput;
Status = LzmaGuidedSectionGetCompressedLocation(
InputSection,
&LzmaInput,
NULL
);
if (RETURN_ERROR (Status)) {
return Status;
}
//
// Authentication is set to Zero, which may be ignored.
//
*AuthenticationStatus = 0;
return LzmaUefiDecompress (
LzmaInput,
*OutputBuffer,
ScratchBuffer
);
}
/**
Register LzmaDecompress handler.
@retval RETURN_SUCCESS Register successfully.
@retval RETURN_OUT_OF_RESOURCES No enough memory to store this handler.
**/
EFI_STATUS
EFIAPI
LzmaDecompressLibConstructor (
)
{
return ExtractGuidedSectionRegisterHandlers (
&gLzmaCustomDecompressGuid,
LzmaGuidedSectionGetInfo,
LzmaGuidedSectionExtraction
);
}
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