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Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +02001/*
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +02002 * Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.65
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +02003 *
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +02004 * Copyright (C) 2007-2009 Industrie Dial Face S.p.A.
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +02005 * Luigi 'Comio' Mantellini (luigi.mantellini@idf-hit.com)
6 *
7 * Copyright (C) 1999-2005 Igor Pavlov
8 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02009 * SPDX-License-Identifier: GPL-2.0+
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020010 */
11
12/*
13 * LZMA_Alone stream format:
14 *
15 * uchar Properties[5]
16 * uint64 Uncompressed size
17 * uchar data[*]
18 *
19 */
20
21#include <config.h>
22#include <common.h>
rhabarber1848@web.defafbb2c2009-07-24 08:16:30 +020023#include <watchdog.h>
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020024
25#ifdef CONFIG_LZMA
26
27#define LZMA_PROPERTIES_OFFSET 0
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020028#define LZMA_SIZE_OFFSET LZMA_PROPS_SIZE
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020029#define LZMA_DATA_OFFSET LZMA_SIZE_OFFSET+sizeof(uint64_t)
30
31#include "LzmaTools.h"
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020032#include "LzmaDec.h"
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020033
34#include <linux/string.h>
35#include <malloc.h>
36
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020037static void *SzAlloc(void *p, size_t size) { p = p; return malloc(size); }
38static void SzFree(void *p, void *address) { p = p; free(address); }
39
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020040int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize,
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020041 unsigned char *inStream, SizeT length)
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020042{
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020043 int res = SZ_ERROR_DATA;
44 int i;
45 ISzAlloc g_Alloc;
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020046
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020047 SizeT outSizeFull = 0xFFFFFFFF; /* 4GBytes limit */
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020048 SizeT outProcessed;
49 SizeT outSize;
50 SizeT outSizeHigh;
51 ELzmaStatus state;
52 SizeT compressedSize = (SizeT)(length - LZMA_PROPS_SIZE);
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020053
Marek Vasutdd059842011-10-24 23:41:36 +000054 debug ("LZMA: Image address............... 0x%p\n", inStream);
55 debug ("LZMA: Properties address.......... 0x%p\n", inStream + LZMA_PROPERTIES_OFFSET);
56 debug ("LZMA: Uncompressed size address... 0x%p\n", inStream + LZMA_SIZE_OFFSET);
57 debug ("LZMA: Compressed data address..... 0x%p\n", inStream + LZMA_DATA_OFFSET);
58 debug ("LZMA: Destination address......... 0x%p\n", outStream);
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020059
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020060 memset(&state, 0, sizeof(state));
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020061
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020062 outSize = 0;
63 outSizeHigh = 0;
64 /* Read the uncompressed size */
65 for (i = 0; i < 8; i++) {
66 unsigned char b = inStream[LZMA_SIZE_OFFSET + i];
67 if (i < 4) {
68 outSize += (UInt32)(b) << (i * 8);
69 } else {
70 outSizeHigh += (UInt32)(b) << ((i - 4) * 8);
71 }
72 }
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020073
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020074 outSizeFull = (SizeT)outSize;
75 if (sizeof(SizeT) >= 8) {
76 /*
77 * SizeT is a 64 bit uint => We can manage files larger than 4GB!
78 *
79 */
80 outSizeFull |= (((SizeT)outSizeHigh << 16) << 16);
81 } else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize) {
82 /*
83 * SizeT is a 32 bit uint => We cannot manage files larger than
Mike Frysingerf68ab432009-12-04 05:35:15 -050084 * 4GB! Assume however that all 0xf values is "unknown size" and
85 * not actually a file of 2^64 bits.
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020086 *
87 */
Mike Frysingerf68ab432009-12-04 05:35:15 -050088 if (outSizeHigh != (SizeT)-1 || outSize != (SizeT)-1) {
89 debug ("LZMA: 64bit support not enabled.\n");
90 return SZ_ERROR_DATA;
91 }
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020092 }
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020093
Mike Frysingerf3e6110a2012-01-07 23:14:35 +000094 debug("LZMA: Uncompresed size............ 0x%zx\n", outSizeFull);
95 debug("LZMA: Compresed size.............. 0x%zx\n", compressedSize);
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020096
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020097 g_Alloc.Alloc = SzAlloc;
98 g_Alloc.Free = SzFree;
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020099
Kees Cookafca2942013-08-16 07:59:14 -0700100 /* Short-circuit early if we know the buffer can't hold the results. */
101 if (outSizeFull != (SizeT)-1 && *uncompressedSize < outSizeFull)
102 return SZ_ERROR_OUTPUT_EOF;
103
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200104 /* Decompress */
Kees Cookafca2942013-08-16 07:59:14 -0700105 outProcessed = *uncompressedSize;
rhabarber1848@web.defafbb2c2009-07-24 08:16:30 +0200106
107 WATCHDOG_RESET();
108
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200109 res = LzmaDecode(
110 outStream, &outProcessed,
111 inStream + LZMA_DATA_OFFSET, &compressedSize,
Kees Cookafca2942013-08-16 07:59:14 -0700112 inStream, LZMA_PROPS_SIZE, LZMA_FINISH_END, &state, &g_Alloc);
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200113 *uncompressedSize = outProcessed;
114 if (res != SZ_OK) {
115 return res;
116 }
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +0200117
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200118 return res;
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +0200119}
120
121#endif