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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +02002/*
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +02003 * Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.65
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +02004 *
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +02005 * Copyright (C) 2007-2009 Industrie Dial Face S.p.A.
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +02006 * Luigi 'Comio' Mantellini (luigi.mantellini@idf-hit.com)
7 *
8 * Copyright (C) 1999-2005 Igor Pavlov
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +02009 */
10
11/*
12 * LZMA_Alone stream format:
13 *
14 * uchar Properties[5]
15 * uint64 Uncompressed size
16 * uchar data[*]
17 *
18 */
19
20#include <config.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060021#include <log.h>
rhabarber1848@web.defafbb2c2009-07-24 08:16:30 +020022#include <watchdog.h>
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020023
24#ifdef CONFIG_LZMA
25
26#define LZMA_PROPERTIES_OFFSET 0
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020027#define LZMA_SIZE_OFFSET LZMA_PROPS_SIZE
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020028#define LZMA_DATA_OFFSET LZMA_SIZE_OFFSET+sizeof(uint64_t)
29
30#include "LzmaTools.h"
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020031#include "LzmaDec.h"
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020032
33#include <linux/string.h>
34#include <malloc.h>
35
Jeroen Hofstee867abda2014-06-10 23:37:23 +020036static void *SzAlloc(void *p, size_t size) { return malloc(size); }
37static void SzFree(void *p, void *address) { free(address); }
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020038
Simon Glassccfc9d72022-02-28 12:08:25 -070039int lzmaBuffToBuffDecompress(unsigned char *outStream, SizeT *uncompressedSize,
40 const unsigned char *inStream, SizeT length)
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020041{
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020042 int res = SZ_ERROR_DATA;
43 int i;
44 ISzAlloc g_Alloc;
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020045
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020046 SizeT outSizeFull = 0xFFFFFFFF; /* 4GBytes limit */
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020047 SizeT outProcessed;
48 SizeT outSize;
49 SizeT outSizeHigh;
50 ELzmaStatus state;
51 SizeT compressedSize = (SizeT)(length - LZMA_PROPS_SIZE);
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020052
Marek Vasutdd059842011-10-24 23:41:36 +000053 debug ("LZMA: Image address............... 0x%p\n", inStream);
54 debug ("LZMA: Properties address.......... 0x%p\n", inStream + LZMA_PROPERTIES_OFFSET);
55 debug ("LZMA: Uncompressed size address... 0x%p\n", inStream + LZMA_SIZE_OFFSET);
56 debug ("LZMA: Compressed data address..... 0x%p\n", inStream + LZMA_DATA_OFFSET);
57 debug ("LZMA: Destination address......... 0x%p\n", outStream);
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020058
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020059 memset(&state, 0, sizeof(state));
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020060
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020061 outSize = 0;
62 outSizeHigh = 0;
63 /* Read the uncompressed size */
64 for (i = 0; i < 8; i++) {
65 unsigned char b = inStream[LZMA_SIZE_OFFSET + i];
66 if (i < 4) {
67 outSize += (UInt32)(b) << (i * 8);
68 } else {
69 outSizeHigh += (UInt32)(b) << ((i - 4) * 8);
70 }
71 }
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020072
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020073 outSizeFull = (SizeT)outSize;
74 if (sizeof(SizeT) >= 8) {
75 /*
76 * SizeT is a 64 bit uint => We can manage files larger than 4GB!
77 *
78 */
79 outSizeFull |= (((SizeT)outSizeHigh << 16) << 16);
80 } else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize) {
81 /*
82 * SizeT is a 32 bit uint => We cannot manage files larger than
Mike Frysingerf68ab432009-12-04 05:35:15 -050083 * 4GB! Assume however that all 0xf values is "unknown size" and
84 * not actually a file of 2^64 bits.
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020085 *
86 */
Mike Frysingerf68ab432009-12-04 05:35:15 -050087 if (outSizeHigh != (SizeT)-1 || outSize != (SizeT)-1) {
88 debug ("LZMA: 64bit support not enabled.\n");
89 return SZ_ERROR_DATA;
90 }
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020091 }
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020092
Mike Frysingerf3e6110a2012-01-07 23:14:35 +000093 debug("LZMA: Uncompresed size............ 0x%zx\n", outSizeFull);
94 debug("LZMA: Compresed size.............. 0x%zx\n", compressedSize);
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020095
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +020096 g_Alloc.Alloc = SzAlloc;
97 g_Alloc.Free = SzFree;
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +020098
Kees Cookafca2942013-08-16 07:59:14 -070099 /* Short-circuit early if we know the buffer can't hold the results. */
100 if (outSizeFull != (SizeT)-1 && *uncompressedSize < outSizeFull)
101 return SZ_ERROR_OUTPUT_EOF;
102
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200103 /* Decompress */
Simon Glassf6eec892014-12-02 13:17:29 -0700104 outProcessed = min(outSizeFull, *uncompressedSize);
rhabarber1848@web.defafbb2c2009-07-24 08:16:30 +0200105
Stefan Roese29caf932022-09-02 14:10:46 +0200106 schedule();
rhabarber1848@web.defafbb2c2009-07-24 08:16:30 +0200107
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200108 res = LzmaDecode(
109 outStream, &outProcessed,
110 inStream + LZMA_DATA_OFFSET, &compressedSize,
Kees Cookafca2942013-08-16 07:59:14 -0700111 inStream, LZMA_PROPS_SIZE, LZMA_FINISH_END, &state, &g_Alloc);
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200112 *uncompressedSize = outProcessed;
Antonios Vamporakis4d3b8a02013-12-31 02:57:01 +0100113
Simon Glassf6eec892014-12-02 13:17:29 -0700114 debug("LZMA: Uncompressed ............... 0x%zx\n", outProcessed);
Antonios Vamporakis4d3b8a02013-12-31 02:57:01 +0100115
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200116 if (res != SZ_OK) {
117 return res;
118 }
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +0200119
Luigi 'Comio' Mantellinicaf72ff2009-07-21 10:45:49 +0200120 return res;
Luigi 'Comio' Mantellinifc9c1722008-09-08 02:46:13 +0200121}
122
123#endif