-
Notifications
You must be signed in to change notification settings - Fork 90
/
pkg2zip_zrif.c
175 lines (151 loc) · 7.17 KB
/
pkg2zip_zrif.c
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
#include "pkg2zip_zrif.h"
#include "pkg2zip_utils.h"
#include "pkg2zip_sys.h"
#include "miniz_tdef.h"
#include "puff.h"
#include <assert.h>
#include <string.h>
#define ADLER32_MOD 65521
#define ZLIB_DEFLATE_METHOD 8
#define ZLIB_DICTIONARY_ID_ZRIF 0x627d1d5d
static const uint8_t zrif_dict[] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48, 48, 48, 48, 57, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48, 48,
48, 48, 54, 48, 48, 48, 48, 55, 48, 48, 48, 48, 56, 0, 48, 48, 48, 48, 51, 48, 48, 48, 48, 52, 48, 48, 48, 48,
53, 48, 95, 48, 48, 45, 65, 68, 68, 67, 79, 78, 84, 48, 48, 48, 48, 50, 45, 80, 67, 83, 71, 48, 48, 48, 48,
48, 48, 48, 48, 48, 48, 49, 45, 80, 67, 83, 69, 48, 48, 48, 45, 80, 67, 83, 70, 48, 48, 48, 45, 80, 67, 83,
67, 48, 48, 48, 45, 80, 67, 83, 68, 48, 48, 48, 45, 80, 67, 83, 65, 48, 48, 48, 45, 80, 67, 83, 66, 48, 48,
48, 0, 1, 0, 1, 0, 1, 0, 2, 239, 205, 171, 137, 103, 69, 35, 1,
};
static const uint8_t b64d[] =
{
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 62, 64, 64, 64, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 64, 64, 64, 64, 64, 64,
64, 0, 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, 64, 64, 64, 64, 64,
64, 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, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
};
static uint32_t base64_decode(const char* in, uint8_t* out)
{
const uint8_t* out0 = out;
const uint8_t* in8 = (uint8_t*)in;
size_t len = strlen(in);
if (in[len - 1] == '=')
{
len--;
}
if (in[len - 1] == '=')
{
len--;
}
for (size_t i = 0; i < len / 4; i++)
{
*out++ = (b64d[in8[0]] << 2) + ((b64d[in8[1]] & 0x30) >> 4);
*out++ = (b64d[in8[1]] << 4) + (b64d[in8[2]] >> 2);
*out++ = (b64d[in8[2]] << 6) + b64d[in8[3]];
in8 += 4;
}
size_t left = len % 4;
if (left == 2)
{
*out++ = (b64d[in8[0]] << 2) + ((b64d[in8[1]] & 0x30) >> 4);
*out++ = (b64d[in8[1]] << 4);
}
else if (left == 3)
{
*out++ = (b64d[in8[0]] << 2) + ((b64d[in8[1]] & 0x30) >> 4);
*out++ = (b64d[in8[1]] << 4) + (b64d[in8[2]] >> 2);
*out++ = b64d[in8[2]] << 6;
}
return (uint32_t)(out - out0);
}
// https://www.ietf.org/rfc/rfc1950.txt
static uint32_t zlib_inflate(const uint8_t* in, uint32_t inlen, uint8_t* out, uint32_t outlen)
{
if (inlen < 2 + 4)
{
sys_error("ERROR: zRIF length too short\n");
}
if (((in[0] << 8) + in[1]) % 31 != 0)
{
sys_error("ERROR: zRIF header is corrupted\n");
}
if ((in[0] & 0xf) != ZLIB_DEFLATE_METHOD)
{
sys_error("ERROR: only deflate method supported in zRIF\n");
}
unsigned long slen = inlen - 4;
unsigned long dlen = outlen;
unsigned long dictlen = 0;
if (in[1] & (1 << 5))
{
assert(outlen > sizeof(zrif_dict));
memcpy(out, zrif_dict, sizeof(zrif_dict));
dictlen = sizeof(zrif_dict);
if (get32be(in + 2) != ZLIB_DICTIONARY_ID_ZRIF)
{
sys_error("ERROR: zRIF uses unknown dictionary\n");
}
in += 6;
slen -= 6;
}
else
{
in += 2;
slen -= 2;
}
if (puff(dictlen, out, &dlen, in, &slen) != 0)
{
sys_error("ERROR: failed to uncompress zRIF\n");
}
memmove(out, out + dictlen, dlen);
if (mz_adler32(MZ_ADLER32_INIT, out, dlen) != get32be(in + slen))
{
sys_error("ERROR: zRIF is corrupted, wrong checksum\n");
}
return dlen;
}
void zrif_decode(const char* str, uint8_t* rif, uint32_t rif_size)
{
uint8_t raw[1024];
uint32_t len = base64_decode(str, raw);
uint8_t out[sizeof(zrif_dict) + 1024];
len = zlib_inflate(raw, len, out, sizeof(out));
if (len != rif_size)
{
sys_error("ERROR: wrong size of zRIF, is it corrupted?\n");
}
memcpy(rif, out, rif_size);
}