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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 *
9 * See file CREDITS for list of people who contributed to this
10 * project.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * MA 02111-1307 USA
26 */
27
28/*
29 * LZMA_Alone stream format:
30 *
31 * uchar Properties[5]
32 * uint64 Uncompressed size
33 * uchar data[*]
34 *
35 */
36
37#include <config.h>
38#include <common.h>
rhabarber1848@web.defafbb2c2009-07-24 08:16:30 +020039#include <watchdog.h>
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020040
41#ifdef CONFIG_LZMA
42
43#define LZMA_PROPERTIES_OFFSET 0
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020044#define LZMA_SIZE_OFFSET LZMA_PROPS_SIZE
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020045#define LZMA_DATA_OFFSET LZMA_SIZE_OFFSET+sizeof(uint64_t)
46
47#include "LzmaTools.h"
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020048#include "LzmaDec.h"
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020049
50#include <linux/string.h>
51#include <malloc.h>
52
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020053static void *SzAlloc(void *p, size_t size) { p = p; return malloc(size); }
54static void SzFree(void *p, void *address) { p = p; free(address); }
55
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020056int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize,
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020057 unsigned char *inStream, SizeT length)
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020058{
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020059 int res = SZ_ERROR_DATA;
60 int i;
61 ISzAlloc g_Alloc;
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020062
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020063 SizeT outSizeFull = 0xFFFFFFFF; /* 4GBytes limit */
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020064 SizeT outProcessed;
65 SizeT outSize;
66 SizeT outSizeHigh;
67 ELzmaStatus state;
68 SizeT compressedSize = (SizeT)(length - LZMA_PROPS_SIZE);
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020069
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020070 debug ("LZMA: Image address............... 0x%lx\n", inStream);
71 debug ("LZMA: Properties address.......... 0x%lx\n", inStream + LZMA_PROPERTIES_OFFSET);
72 debug ("LZMA: Uncompressed size address... 0x%lx\n", inStream + LZMA_SIZE_OFFSET);
73 debug ("LZMA: Compressed data address..... 0x%lx\n", inStream + LZMA_DATA_OFFSET);
74 debug ("LZMA: Destination address......... 0x%lx\n", outStream);
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020075
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020076 memset(&state, 0, sizeof(state));
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020077
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020078 outSize = 0;
79 outSizeHigh = 0;
80 /* Read the uncompressed size */
81 for (i = 0; i < 8; i++) {
82 unsigned char b = inStream[LZMA_SIZE_OFFSET + i];
83 if (i < 4) {
84 outSize += (UInt32)(b) << (i * 8);
85 } else {
86 outSizeHigh += (UInt32)(b) << ((i - 4) * 8);
87 }
88 }
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020089
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020090 outSizeFull = (SizeT)outSize;
91 if (sizeof(SizeT) >= 8) {
92 /*
93 * SizeT is a 64 bit uint => We can manage files larger than 4GB!
94 *
95 */
96 outSizeFull |= (((SizeT)outSizeHigh << 16) << 16);
97 } else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize) {
98 /*
99 * SizeT is a 32 bit uint => We cannot manage files larger than
Mike Frysingerf68ab432009-12-04 05:35:15 -0500100 * 4GB! Assume however that all 0xf values is "unknown size" and
101 * not actually a file of 2^64 bits.
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200102 *
103 */
Mike Frysingerf68ab432009-12-04 05:35:15 -0500104 if (outSizeHigh != (SizeT)-1 || outSize != (SizeT)-1) {
105 debug ("LZMA: 64bit support not enabled.\n");
106 return SZ_ERROR_DATA;
107 }
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200108 }
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +0200109
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200110 debug ("LZMA: Uncompresed size............ 0x%lx\n", outSizeFull);
111 debug ("LZMA: Compresed size.............. 0x%lx\n", compressedSize);
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +0200112
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200113 g_Alloc.Alloc = SzAlloc;
114 g_Alloc.Free = SzFree;
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +0200115
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200116 /* Decompress */
117 outProcessed = outSizeFull;
rhabarber1848@web.defafbb2c2009-07-24 08:16:30 +0200118
119 WATCHDOG_RESET();
120
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200121 res = LzmaDecode(
122 outStream, &outProcessed,
123 inStream + LZMA_DATA_OFFSET, &compressedSize,
124 inStream, LZMA_PROPS_SIZE, LZMA_FINISH_ANY, &state, &g_Alloc);
125 *uncompressedSize = outProcessed;
126 if (res != SZ_OK) {
127 return res;
128 }
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +0200129
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200130 return res;
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +0200131}
132
133#endif