/* * coreboot interface to memory-saving variant of LZMA decoder * * Copyright (C) 2006 Carl-Daniel Hailfinger * Released under the BSD license * * Parts of this file are based on C/7zip/Compress/LZMA_C/LzmaTest.c from the LZMA * SDK 4.42, which is written and distributed to public domain by Igor Pavlov. * */ #include <lzma.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include "lzmadecode.c" unsigned long ulzman(const unsigned char *src, unsigned long srcn, unsigned char *dst, unsigned long dstn) { unsigned char properties[LZMA_PROPERTIES_SIZE]; const int data_offset = LZMA_PROPERTIES_SIZE + 8; UInt32 outSize; SizeT inProcessed; SizeT outProcessed; int res; CLzmaDecoderState state; SizeT mallocneeds; unsigned char *scratchpad; if (srcn < data_offset) { printf("lzma: Input too small.\n"); return 0; } memcpy(properties, src, LZMA_PROPERTIES_SIZE); memcpy(&outSize, src + LZMA_PROPERTIES_SIZE, sizeof(outSize)); if (outSize > dstn) outSize = dstn; if (LzmaDecodeProperties(&state.Properties, properties, LZMA_PROPERTIES_SIZE) != LZMA_RESULT_OK) { printf("lzma: Incorrect stream properties.\n"); return 0; } mallocneeds = (LzmaGetNumProbs(&state.Properties) * sizeof(CProb)); scratchpad = malloc(mallocneeds); if (!scratchpad) { printf("lzma: Cannot allocate %u bytes for scratchpad!\n", mallocneeds); return 0; } state.Probs = (CProb *)scratchpad; res = LzmaDecode(&state, src + data_offset, srcn - data_offset, &inProcessed, dst, outSize, &outProcessed); free(scratchpad); if (res != 0) { printf("lzma: Decoding error = %d\n", res); return 0; } return outProcessed; } unsigned long ulzma(const unsigned char *src, unsigned char *dst) { return ulzman(src, (unsigned long)(-1), dst, (unsigned long)(-1)); }