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/******************************************************************************
**
** FILE NAME : LzmaWrapper.c
** PROJECT : bootloader
** MODULES : U-boot
**
** DATE : 2 Nov 2006
** AUTHOR : Lin Mars
** DESCRIPTION : LZMA decoder support for U-boot 1.1.5
** COPYRIGHT : Copyright (c) 2006
** Infineon Technologies AG
** Am Campeon 1-12, 85579 Neubiberg, Germany
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** HISTORY
** $Date $Author $Comment
** 2 Nov 2006 Lin Mars init version which derived from LzmaTest.c from
** LZMA v4.43 SDK
** 24 May 2007 Lin Mars Fix issue for multiple lzma_inflate involved
*******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "LzmaDecode.h"
#include "LzmaWrapper.h"
#if defined(DEBUG_ENABLE_BOOTSTRAP_PRINTF) || !defined(CFG_BOOTSTRAP_CODE)
static const char *kCantReadMessage = "Can not read from source buffer";
static const char *kCantAllocateMessage = "Not enough buffer for decompression";
#endif
static size_t rpos=0, dpos=0;
static int MyReadFileAndCheck(unsigned char *src, void *dest, size_t size)
{
if (size == 0)
return 0;
memcpy(dest, src + rpos, size);
rpos += size;
return 1;
}
int lzma_inflate(unsigned char *source, int s_len, unsigned char *dest, int *d_len)
{
/* We use two 32-bit integers to construct 64-bit integer for file size.
You can remove outSizeHigh, if you don't need >= 4GB supporting,
or you can use UInt64 outSize, if your compiler supports 64-bit integers*/
UInt32 outSize = 0;
UInt32 outSizeHigh = 0;
SizeT outSizeFull;
unsigned char *outStream;
int waitEOS = 1;
/* waitEOS = 1, if there is no uncompressed size in headers,
so decoder will wait EOS (End of Stream Marker) in compressed stream */
SizeT compressedSize;
unsigned char *inStream;
CLzmaDecoderState state; /* it's about 24-80 bytes structure, if int is 32-bit */
unsigned char properties[LZMA_PROPERTIES_SIZE];
int res;
rpos=0; dpos=0;
if (sizeof(UInt32) < 4)
{
#if defined(DEBUG_ENABLE_BOOTSTRAP_PRINTF) || !defined(CFG_BOOTSTRAP_CODE)
printf("LZMA decoder needs correct UInt32\n");
#endif
return LZMA_RESULT_DATA_ERROR;
}
{
long length=s_len;
if ((long)(SizeT)length != length)
{
#if defined(DEBUG_ENABLE_BOOTSTRAP_PRINTF) || !defined(CFG_BOOTSTRAP_CODE)
printf("Too big compressed stream\n");
#endif
return LZMA_RESULT_DATA_ERROR;
}
compressedSize = (SizeT)(length - (LZMA_PROPERTIES_SIZE + 8));
}
/* Read LZMA properties for compressed stream */
if (!MyReadFileAndCheck(source, properties, sizeof(properties)))
{
#if defined(DEBUG_ENABLE_BOOTSTRAP_PRINTF) || !defined(CFG_BOOTSTRAP_CODE)
printf("%s\n", kCantReadMessage);
#endif
return LZMA_RESULT_DATA_ERROR;
}
/* Read uncompressed size */
{
int i;
for (i = 0; i < 8; i++)
{
unsigned char b;
if (!MyReadFileAndCheck(source, &b, 1))
{
#if defined(DEBUG_ENABLE_BOOTSTRAP_PRINTF) || !defined(CFG_BOOTSTRAP_CODE)
printf("%s\n", kCantReadMessage);
#endif
return LZMA_RESULT_DATA_ERROR;
}
if (b != 0xFF)
waitEOS = 0;
if (i < 4)
outSize += (UInt32)(b) << (i * 8);
else
outSizeHigh += (UInt32)(b) << ((i - 4) * 8);
}
if (waitEOS)
{
#if defined(DEBUG_ENABLE_BOOTSTRAP_PRINTF) || !defined(CFG_BOOTSTRAP_CODE)
printf("Stream with EOS marker is not supported");
#endif
return LZMA_RESULT_DATA_ERROR;
}
outSizeFull = (SizeT)outSize;
if (sizeof(SizeT) >= 8)
outSizeFull |= (((SizeT)outSizeHigh << 16) << 16);
else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize)
{
#if defined(DEBUG_ENABLE_BOOTSTRAP_PRINTF) || !defined(CFG_BOOTSTRAP_CODE)
printf("Too big uncompressed stream");
#endif
return LZMA_RESULT_DATA_ERROR;
}
}
/* Decode LZMA properties and allocate memory */
if (LzmaDecodeProperties(&state.Properties, properties, LZMA_PROPERTIES_SIZE) != LZMA_RESULT_OK)
{
#if defined(DEBUG_ENABLE_BOOTSTRAP_PRINTF) || !defined(CFG_BOOTSTRAP_CODE)
printf("Incorrect stream properties");
#endif
return LZMA_RESULT_DATA_ERROR;
}
state.Probs = (CProb *)malloc(LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
if (outSizeFull == 0)
outStream = 0;
else
{
if (outSizeFull > *d_len)
outStream = 0;
else
outStream = dest;
}
if (compressedSize == 0)
inStream = 0;
else
{
if ((compressedSize+rpos) > s_len )
inStream = 0;
else
inStream = source + rpos;
}
if (state.Probs == 0
|| (outStream == 0 && outSizeFull != 0)
|| (inStream == 0 && compressedSize != 0)
)
{
free(state.Probs);
#if defined(DEBUG_ENABLE_BOOTSTRAP_PRINTF) || !defined(CFG_BOOTSTRAP_CODE)
printf("%s\n", kCantAllocateMessage);
#endif
return LZMA_RESULT_DATA_ERROR;
}
/* Decompress */
{
SizeT inProcessed;
SizeT outProcessed;
res = LzmaDecode(&state,
inStream, compressedSize, &inProcessed,
outStream, outSizeFull, &outProcessed);
if (res != 0)
{
#if defined(DEBUG_ENABLE_BOOTSTRAP_PRINTF) || !defined(CFG_BOOTSTRAP_CODE)
printf("\nDecoding error = %d\n", res);
#endif
res = 1;
}
else
{
*d_len = outProcessed;
}
}
free(state.Probs);
return res;
}
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