mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-26 16:47:40 +01:00
230 lines
7.1 KiB
C
230 lines
7.1 KiB
C
/** @file
|
|
LZMA Decompress interfaces
|
|
|
|
Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
#include "LzmaDecompressLibInternal.h"
|
|
#include "Sdk/C/Types.h"
|
|
#include "Sdk/C/7zVersion.h"
|
|
#include "Sdk/C/LzmaDec.h"
|
|
//#include "Debug.h"
|
|
|
|
#define SCRATCH_BUFFER_REQUEST_SIZE SIZE_64KB
|
|
|
|
typedef struct
|
|
{
|
|
ISzAlloc Functions;
|
|
VOID *Buffer;
|
|
UINTN BufferSize;
|
|
} ISzAllocWithData;
|
|
|
|
/**
|
|
Allocation routine used by LZMA decompression.
|
|
|
|
@param P Pointer to the ISzAlloc instance
|
|
@param Size The size in bytes to be allocated
|
|
|
|
@return The allocated pointer address, or NULL on failure
|
|
**/
|
|
VOID *
|
|
SzAlloc (
|
|
VOID *P,
|
|
size_t Size
|
|
)
|
|
{
|
|
VOID *Addr;
|
|
ISzAllocWithData *Private;
|
|
|
|
Private = (ISzAllocWithData*) P;
|
|
|
|
if (Private && Private->BufferSize >= Size) {
|
|
Addr = Private->Buffer;
|
|
Private->Buffer = (VOID*) ((UINT8*)Addr + Size);
|
|
Private->BufferSize -= Size;
|
|
return Addr;
|
|
} else {
|
|
// ASSERT (FALSE);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Free routine used by LZMA decompression.
|
|
|
|
@param P Pointer to the ISzAlloc instance
|
|
@param Address The address to be freed
|
|
**/
|
|
VOID
|
|
SzFree (
|
|
VOID *P,
|
|
VOID *Address
|
|
)
|
|
{
|
|
//
|
|
// We use the 'scratch buffer' for allocations, so there is no free
|
|
// operation required. The scratch buffer will be freed by the caller
|
|
// of the decompression code.
|
|
//
|
|
}
|
|
|
|
#define LZMA_HEADER_SIZE (LZMA_PROPS_SIZE + 8)
|
|
|
|
/**
|
|
Get the size of the uncompressed buffer by parsing EncodeData header.
|
|
|
|
@param EncodedData Pointer to the compressed data.
|
|
|
|
@return The size of the uncompressed buffer.
|
|
**/
|
|
UINT64
|
|
GetDecodedSizeOfBuf(
|
|
UINT8 *EncodedData
|
|
)
|
|
{
|
|
UINT64 DecodedSize;
|
|
INTN Index;
|
|
|
|
if (!EncodedData) {
|
|
return 0;
|
|
}
|
|
|
|
/* Parse header */
|
|
DecodedSize = 0;
|
|
for (Index = LZMA_PROPS_SIZE + 7; Index >= LZMA_PROPS_SIZE; Index--)
|
|
DecodedSize = LShiftU64(DecodedSize, 8) + EncodedData[Index];
|
|
|
|
return DecodedSize;
|
|
}
|
|
|
|
//
|
|
// LZMA functions and data as defined in local LzmaDecompressLibInternal.h
|
|
//
|
|
|
|
/**
|
|
Given a Lzma compressed source buffer, this function retrieves the size of
|
|
the uncompressed buffer and the size of the scratch buffer required
|
|
to decompress the compressed source buffer.
|
|
|
|
Retrieves the size of the uncompressed buffer and the temporary scratch buffer
|
|
required to decompress the buffer specified by Source and SourceSize.
|
|
The size of the uncompressed buffer is returned in DestinationSize,
|
|
the size of the scratch buffer is returned in ScratchSize, and RETURN_SUCCESS is returned.
|
|
This function does not have scratch buffer available to perform a thorough
|
|
checking of the validity of the source data. It just retrieves the "Original Size"
|
|
field from the LZMA_HEADER_SIZE beginning bytes of the source data and output it as DestinationSize.
|
|
And ScratchSize is specific to the decompression implementation.
|
|
|
|
If SourceSize is less than LZMA_HEADER_SIZE, then ASSERT().
|
|
|
|
@param Source The source buffer containing the compressed data.
|
|
@param SourceSize The size, in bytes, of the source buffer.
|
|
@param DestinationSize A pointer to the size, in bytes, of the uncompressed buffer
|
|
that will be generated when the compressed buffer specified
|
|
by Source and SourceSize is decompressed.
|
|
@param ScratchSize A pointer to the size, in bytes, of the scratch buffer that
|
|
is required to decompress the compressed buffer specified
|
|
by Source and SourceSize.
|
|
|
|
@retval RETURN_SUCCESS The size of the uncompressed data was returned
|
|
in DestinationSize and the size of the scratch
|
|
buffer was returned in ScratchSize.
|
|
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
LzmaUefiDecompressGetInfo (
|
|
IN CONST VOID *Source,
|
|
IN UINT32 SourceSize,
|
|
OUT UINT32 *DestinationSize,
|
|
OUT UINT32 *ScratchSize
|
|
)
|
|
{
|
|
UInt64 DecodedSize;
|
|
|
|
// ASSERT(SourceSize >= LZMA_HEADER_SIZE);
|
|
if (!Source || SourceSize < LZMA_HEADER_SIZE) {
|
|
return RETURN_INVALID_PARAMETER;
|
|
}
|
|
|
|
DecodedSize = GetDecodedSizeOfBuf((UINT8*)Source);
|
|
|
|
*DestinationSize = (UINT32)DecodedSize;
|
|
*ScratchSize = SCRATCH_BUFFER_REQUEST_SIZE;
|
|
return RETURN_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Decompresses a Lzma compressed source buffer.
|
|
|
|
Extracts decompressed data to its original form.
|
|
If the compressed source data specified by Source is successfully decompressed
|
|
into Destination, then RETURN_SUCCESS is returned. If the compressed source data
|
|
specified by Source is not in a valid compressed data format,
|
|
then RETURN_INVALID_PARAMETER is returned.
|
|
|
|
@param Source The source buffer containing the compressed data.
|
|
@param SourceSize The size of source buffer.
|
|
@param Destination The destination buffer to store the decompressed data
|
|
@param Scratch A temporary scratch buffer that is used to perform the decompression.
|
|
This is an optional parameter that may be NULL if the
|
|
required scratch buffer size is 0.
|
|
|
|
@retval RETURN_SUCCESS Decompression completed successfully, and
|
|
the uncompressed buffer is returned in Destination.
|
|
@retval RETURN_INVALID_PARAMETER
|
|
The source buffer specified by Source is corrupted
|
|
(not in a valid compressed format).
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
LzmaUefiDecompress (
|
|
IN CONST VOID *Source,
|
|
IN UINTN SourceSize,
|
|
IN OUT VOID *Destination,
|
|
IN OUT VOID *Scratch
|
|
)
|
|
{
|
|
SRes LzmaResult;
|
|
ELzmaStatus Status;
|
|
SizeT DecodedBufSize;
|
|
SizeT EncodedDataSize;
|
|
ISzAllocWithData AllocFuncs;
|
|
|
|
AllocFuncs.Functions.Alloc = SzAlloc;
|
|
AllocFuncs.Functions.Free = SzFree;
|
|
AllocFuncs.Buffer = Scratch;
|
|
AllocFuncs.BufferSize = SCRATCH_BUFFER_REQUEST_SIZE;
|
|
|
|
DecodedBufSize = (SizeT)GetDecodedSizeOfBuf((UINT8*)Source);
|
|
EncodedDataSize = (SizeT) (SourceSize - LZMA_HEADER_SIZE);
|
|
|
|
// PrintString ("DecodedBufSize = %x EncodedDataSize = %x\n", DecodedBufSize, EncodedDataSize);
|
|
LzmaResult = LzmaDecode(
|
|
Destination,
|
|
&DecodedBufSize,
|
|
(Byte*)((UINT8*)Source + LZMA_HEADER_SIZE),
|
|
&EncodedDataSize,
|
|
Source,
|
|
LZMA_PROPS_SIZE,
|
|
LZMA_FINISH_END,
|
|
&Status,
|
|
&(AllocFuncs.Functions)
|
|
);
|
|
// PrintString ("LzmaDecode OK\n");
|
|
if (LzmaResult == SZ_OK) {
|
|
return RETURN_SUCCESS;
|
|
} else {
|
|
return RETURN_INVALID_PARAMETER;
|
|
}
|
|
}
|
|
|