mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-27 12:15:19 +01:00
317 lines
9.8 KiB
C
317 lines
9.8 KiB
C
/** @file
|
|
Brotli Decompress interfaces
|
|
|
|
Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
#include <BrotliDecompressLibInternal.h>
|
|
|
|
/**
|
|
Dummy malloc function for compiler.
|
|
**/
|
|
VOID *
|
|
BrDummyMalloc (
|
|
IN size_t Size
|
|
)
|
|
{
|
|
ASSERT (FALSE);
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
Dummy free function for compiler.
|
|
**/
|
|
VOID
|
|
BrDummyFree (
|
|
IN VOID * Ptr
|
|
)
|
|
{
|
|
ASSERT (FALSE);
|
|
}
|
|
|
|
/**
|
|
Allocation routine used by BROTLI decompression.
|
|
|
|
@param Ptr Pointer to the BROTLI_BUFF instance.
|
|
@param Size The size in bytes to be allocated.
|
|
|
|
@return The allocated pointer address, or NULL on failure
|
|
**/
|
|
VOID *
|
|
BrAlloc (
|
|
IN VOID * Ptr,
|
|
IN size_t Size
|
|
)
|
|
{
|
|
VOID *Addr;
|
|
BROTLI_BUFF *Private;
|
|
|
|
Private = (BROTLI_BUFF *)Ptr;
|
|
|
|
if (Private->BuffSize >= Size) {
|
|
Addr = Private->Buff;
|
|
Private->Buff = (VOID *) ((UINT8 *)Addr + Size);
|
|
Private->BuffSize -= Size;
|
|
return Addr;
|
|
} else {
|
|
ASSERT (FALSE);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Free routine used by BROTLI decompression.
|
|
|
|
@param Ptr Pointer to the BROTLI_BUFF instance
|
|
@param Address The address to be freed
|
|
**/
|
|
VOID
|
|
BrFree (
|
|
IN VOID * Ptr,
|
|
IN 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.
|
|
//
|
|
}
|
|
|
|
/**
|
|
Decompresses a Brotli compressed source buffer.
|
|
|
|
Extracts decompressed data to its original form.
|
|
If the compressed source data specified by Source is successfully decompressed
|
|
into Destination, then EFI_SUCCESS is returned. If the compressed source data
|
|
specified by Source is not in a valid compressed data format,
|
|
then EFI_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 DestSize The destination buffer size.
|
|
@param BuffInfo The pointer to the BROTLI_BUFF instance.
|
|
|
|
@retval EFI_SUCCESS Decompression completed successfully, and
|
|
the uncompressed buffer is returned in Destination.
|
|
@retval EFI_INVALID_PARAMETER
|
|
The source buffer specified by Source is corrupted
|
|
(not in a valid compressed format).
|
|
**/
|
|
EFI_STATUS
|
|
BrotliDecompress (
|
|
IN CONST VOID* Source,
|
|
IN UINTN SourceSize,
|
|
IN OUT VOID* Destination,
|
|
IN OUT UINTN DestSize,
|
|
IN VOID * BuffInfo
|
|
)
|
|
{
|
|
UINT8 * Input;
|
|
UINT8 * Output;
|
|
const UINT8 * NextIn;
|
|
UINT8 * NextOut;
|
|
size_t TotalOut;
|
|
size_t AvailableIn;
|
|
size_t AvailableOut;
|
|
VOID * Temp;
|
|
BrotliDecoderResult Result;
|
|
BrotliDecoderState * BroState;
|
|
|
|
TotalOut = 0;
|
|
AvailableOut = FILE_BUFFER_SIZE;
|
|
Result = BROTLI_DECODER_RESULT_ERROR;
|
|
BroState = BrotliDecoderCreateInstance(BrAlloc, BrFree, BuffInfo);
|
|
Temp = Destination;
|
|
|
|
if (BroState == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
Input = (UINT8 *)BrAlloc(BuffInfo, FILE_BUFFER_SIZE);
|
|
Output = (UINT8 *)BrAlloc(BuffInfo, FILE_BUFFER_SIZE);
|
|
if ((Input==NULL) || (Output==NULL)) {
|
|
BrFree(BuffInfo, Input);
|
|
BrFree(BuffInfo, Output);
|
|
BrotliDecoderDestroyInstance(BroState);
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
NextOut = Output;
|
|
Result = BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT;
|
|
while (1) {
|
|
if (Result == BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT) {
|
|
if (SourceSize == 0) {
|
|
break;
|
|
}
|
|
if (SourceSize >= FILE_BUFFER_SIZE) {
|
|
AvailableIn = FILE_BUFFER_SIZE;
|
|
}else{
|
|
AvailableIn = SourceSize;
|
|
}
|
|
CopyMem(Input, Source, AvailableIn);
|
|
Source = (VOID *)((UINT8 *)Source + AvailableIn);
|
|
SourceSize -= AvailableIn;
|
|
NextIn = Input;
|
|
} else if (Result == BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT) {
|
|
CopyMem(Temp, Output, FILE_BUFFER_SIZE);
|
|
AvailableOut = FILE_BUFFER_SIZE;
|
|
Temp = (VOID *)((UINT8 *)Temp +FILE_BUFFER_SIZE);
|
|
NextOut = Output;
|
|
} else {
|
|
break; /* Error or success. */
|
|
}
|
|
Result = BrotliDecoderDecompressStream(
|
|
BroState,
|
|
&AvailableIn,
|
|
&NextIn,
|
|
&AvailableOut,
|
|
&NextOut,
|
|
&TotalOut
|
|
);
|
|
}
|
|
if (NextOut != Output) {
|
|
CopyMem(Temp, Output, (size_t)(NextOut - Output));
|
|
}
|
|
|
|
DestSize = TotalOut;
|
|
|
|
BrFree(BuffInfo, Input);
|
|
BrFree(BuffInfo, Output);
|
|
BrotliDecoderDestroyInstance(BroState);
|
|
return (Result == BROTLI_DECODER_RESULT_SUCCESS) ? EFI_SUCCESS : EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
/**
|
|
Get the size of the uncompressed buffer by parsing EncodeData header.
|
|
|
|
@param EncodedData Pointer to the compressed data.
|
|
@param StartOffset Start offset of the compressed data.
|
|
@param EndOffset End offset of the compressed data.
|
|
|
|
@return The size of the uncompressed buffer.
|
|
**/
|
|
UINT64
|
|
BrGetDecodedSizeOfBuf(
|
|
IN UINT8 * EncodedData,
|
|
IN UINT8 StartOffset,
|
|
IN UINT8 EndOffset
|
|
)
|
|
{
|
|
UINT64 DecodedSize;
|
|
INTN Index;
|
|
|
|
/* Parse header */
|
|
DecodedSize = 0;
|
|
for (Index = EndOffset - 1; Index >= StartOffset; Index--)
|
|
DecodedSize = LShiftU64(DecodedSize, 8) + EncodedData[Index];
|
|
|
|
return DecodedSize;
|
|
}
|
|
|
|
/**
|
|
Given a Brotli 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 EFI_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 BROTLI_SCRATCH_MAX beginning bytes of the source data and output it as DestinationSize.
|
|
And ScratchSize is specific to the decompression implementation.
|
|
|
|
If SourceSize is less than BROTLI_SCRATCH_MAX, 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 EFI_SUCCESS The size of the uncompressed data was returned
|
|
in DestinationSize and the size of the scratch
|
|
buffer was returned in ScratchSize.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
BrotliUefiDecompressGetInfo (
|
|
IN CONST VOID * Source,
|
|
IN UINT32 SourceSize,
|
|
OUT UINT32 * DestinationSize,
|
|
OUT UINT32 * ScratchSize
|
|
)
|
|
{
|
|
UINT64 GetSize;
|
|
UINT8 MaxOffset;
|
|
|
|
ASSERT(SourceSize >= BROTLI_SCRATCH_MAX);
|
|
|
|
MaxOffset = BROTLI_DECODE_MAX;
|
|
GetSize = BrGetDecodedSizeOfBuf((UINT8 *)Source, MaxOffset - BROTLI_INFO_SIZE, MaxOffset);
|
|
*DestinationSize = (UINT32)GetSize;
|
|
MaxOffset = BROTLI_SCRATCH_MAX;
|
|
GetSize = BrGetDecodedSizeOfBuf((UINT8 *)Source, MaxOffset - BROTLI_INFO_SIZE, MaxOffset);
|
|
*ScratchSize = (UINT32)GetSize;
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Decompresses a Brotli 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 EFI_SUCCESS Decompression completed successfully, and
|
|
the uncompressed buffer is returned in Destination.
|
|
@retval EFI_INVALID_PARAMETER
|
|
The source buffer specified by Source is corrupted
|
|
(not in a valid compressed format).
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
BrotliUefiDecompress (
|
|
IN CONST VOID * Source,
|
|
IN UINTN SourceSize,
|
|
IN OUT VOID * Destination,
|
|
IN OUT VOID * Scratch
|
|
)
|
|
{
|
|
UINTN DestSize = 0;
|
|
EFI_STATUS Status;
|
|
BROTLI_BUFF BroBuff;
|
|
UINT64 GetSize;
|
|
UINT8 MaxOffset;
|
|
|
|
MaxOffset = BROTLI_SCRATCH_MAX;
|
|
GetSize = BrGetDecodedSizeOfBuf((UINT8 *)Source, MaxOffset - BROTLI_INFO_SIZE, MaxOffset);
|
|
|
|
BroBuff.Buff = Scratch;
|
|
BroBuff.BuffSize = (UINTN)GetSize;
|
|
|
|
Status = BrotliDecompress(
|
|
(VOID *)((UINT8 *)Source + BROTLI_SCRATCH_MAX),
|
|
SourceSize - BROTLI_SCRATCH_MAX,
|
|
Destination,
|
|
DestSize,
|
|
(VOID *)(&BroBuff)
|
|
);
|
|
|
|
return Status;
|
|
}
|