1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/******************************************************************************
**
** 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;
}
|
