ObjFW  Diff

Patch Side-by-side Diff

Differences From Artifact [06a2cd6d95]:

To Artifact [8e11dbdc78]:

︙
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

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








-
-
-
+
+
+

-
+







-
+











-
+













-
-
-
-
+
+
+
+








-
-
+
+










-
-
-
+
+
+















-
+








 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFString.h"
#import "OFData.h"
#import "base64.h"
#import "OFBase64.h"
#import "OFString.h"
#import "OFData.h"

const uint8_t of_base64_encode_table[64] = {
static const unsigned char encodeTable[64] = {
	'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N',
	'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b',
	'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p',
	'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3',
	'4', '5', '6', '7', '8', '9', '+', '/'
};

const int8_t of_base64_decode_table[128] = {
static const signed char decodeTable[128] = {
	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
	-1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54,
	55, 56, 57, 58, 59, 60, 61, -1, -1, -1,  0, -1, -1, -1,  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, -1, -1, -1, -1, -1, -1, 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, -1, -1, -1, -1, -1
};

OFString *
of_base64_encode(const void *data, size_t length)
OFBase64Encode(const void *data, size_t length)
{
	OFMutableString *ret = [OFMutableString string];
	uint8_t *buffer = (uint8_t *)data;
	size_t i;
	uint8_t rest;
	char tb[4];
	uint32_t sb;

	rest = length % 3;

	for (i = 0; i < length - rest; i += 3) {
		sb = (buffer[i] << 16) | (buffer[i + 1] << 8) | buffer[i + 2];

		tb[0] = of_base64_encode_table[(sb & 0xFC0000) >> 18];
		tb[1] = of_base64_encode_table[(sb & 0x03F000) >> 12];
		tb[2] = of_base64_encode_table[(sb & 0x000FC0) >> 6];
		tb[3] = of_base64_encode_table[sb & 0x00003F];
		tb[0] = encodeTable[(sb & 0xFC0000) >> 18];
		tb[1] = encodeTable[(sb & 0x03F000) >> 12];
		tb[2] = encodeTable[(sb & 0x000FC0) >> 6];
		tb[3] = encodeTable[sb & 0x00003F];

		[ret appendCString: tb
			  encoding: OFStringEncodingASCII
			    length: 4];
	}

	switch (rest) {
	case 1:
		tb[0] = of_base64_encode_table[buffer[i] >> 2];
		tb[1] = of_base64_encode_table[(buffer[i] & 3) << 4];
		tb[0] = encodeTable[buffer[i] >> 2];
		tb[1] = encodeTable[(buffer[i] & 3) << 4];
		tb[2] = tb[3] = '=';

		[ret appendCString: tb
			  encoding: OFStringEncodingASCII
			    length: 4];

		break;
	case 2:
		sb = (buffer[i] << 16) | (buffer[i + 1] << 8);

		tb[0] = of_base64_encode_table[(sb & 0xFC0000) >> 18];
		tb[1] = of_base64_encode_table[(sb & 0x03F000) >> 12];
		tb[2] = of_base64_encode_table[(sb & 0x000FC0) >> 6];
		tb[0] = encodeTable[(sb & 0xFC0000) >> 18];
		tb[1] = encodeTable[(sb & 0x03F000) >> 12];
		tb[2] = encodeTable[(sb & 0x000FC0) >> 6];
		tb[3] = '=';

		[ret appendCString: tb
			  encoding: OFStringEncodingASCII
			    length: 4];

		break;
	}

	[ret makeImmutable];

	return ret;
}

bool
of_base64_decode(OFMutableData *data, const char *string, size_t length)
OFBase64Decode(OFMutableData *data, const char *string, size_t length)
{
	const uint8_t *buffer = (const uint8_t *)string;
	size_t i;

	if ((length & 3) != 0)
		return false;
︙
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

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








-
+




-
+




-
+




-
+














			return false;

		if (buffer[i + 2] == '=')
			count--;
		if (buffer[i + 3] == '=')
			count--;

		if ((tmp = of_base64_decode_table[buffer[i]]) == -1)
		if ((tmp = decodeTable[buffer[i]]) == -1)
			return false;

		sb |= tmp << 18;

		if ((tmp = of_base64_decode_table[buffer[i + 1]]) == -1)
		if ((tmp = decodeTable[buffer[i + 1]]) == -1)
			return false;

		sb |= tmp << 12;

		if ((tmp = of_base64_decode_table[buffer[i + 2]]) == -1)
		if ((tmp = decodeTable[buffer[i + 2]]) == -1)
			return false;

		sb |= tmp << 6;

		if ((tmp = of_base64_decode_table[buffer[i + 3]]) == -1)
		if ((tmp = decodeTable[buffer[i + 3]]) == -1)
			return false;

		sb |= tmp;

		db[0] = (sb & 0xFF0000) >> 16;
		db[1] = (sb & 0x00FF00) >> 8;
		db[2] = sb & 0x0000FF;

		[data addItems: db count: count];
	}

	return true;
}
Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
This page was generated in about 0.014s