FazBrowse GitHub Viewer
|
Trending
|
URL:
|
Home
Tools:
[Download Repo ZIP]
[View Raw Code]
[Original HTTPS Page]
Arduino-Websocket/Base64.cpp at master · ingrocha/Arduino-Websocket · GitHub
ingrocha
/
Arduino-Websocket
Public
forked from
brandenhall/Arduino-Websocket
Notifications
You must be signed in to change notification settings
Fork
0
Star
0
Code
Pull requests
0
Actions
Projects
Wiki
Security and quality
0
Insights
Additional navigation options
Code
Pull requests
Actions
Projects
Wiki
Security and quality
Insights
Expand file tree
Breadcrumbs
Arduino-Websocket
/
Base64.cpp
Copy path
More file actions
More file actions
Latest commit
History
History
History
executable file
·
133 lines (106 loc) · 2.37 KB
Breadcrumbs
Arduino-Websocket
/
Base64.cpp
Copy path
File metadata and controls
executable file
·
133 lines (106 loc) · 2.37 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
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
#
include
"
Base64.h
"
const
char
b64_alphabet[] =
"
ABCDEFGHIJKLMNOPQRSTUVWXYZ
"
"
abcdefghijklmnopqrstuvwxyz
"
"
0123456789+/
"
;
/*
'Private' declarations
*/
inline
void
a3_to_a4
(
unsigned
char
* a4,
unsigned
char
* a3);
inline
void
a4_to_a3
(
unsigned
char
* a3,
unsigned
char
* a4);
inline
unsigned
char
b64_lookup
(
char
c);
int
base64_encode
(
char
*output,
char
*input,
int
inputLen) {
int
i =
0
, j =
0
;
int
encLen =
0
;
unsigned
char
a3[
3
];
unsigned
char
a4[
4
];
while
(inputLen--) {
a3[i++] = *(input++);
if
(i ==
3
) {
a3_to_a4
(a4, a3);
for
(i =
0
; i <
4
; i++) {
output[encLen++] = b64_alphabet[a4[i]];
}
i =
0
;
}
}
if
(i) {
for
(j = i; j <
3
; j++) {
a3[j] =
'
\0
'
;
}
a3_to_a4
(a4, a3);
for
(j =
0
; j < i +
1
; j++) {
output[encLen++] = b64_alphabet[a4[j]];
}
while
((i++ <
3
)) {
output[encLen++] =
'
=
'
;
}
}
output[encLen] =
'
\0
'
;
return
encLen;
}
int
base64_decode
(
char
* output,
char
* input,
int
inputLen) {
int
i =
0
, j =
0
;
int
decLen =
0
;
unsigned
char
a3[
3
];
unsigned
char
a4[
4
];
while
(inputLen--) {
if
(*input ==
'
=
'
) {
break
;
}
a4[i++] = *(input++);
if
(i ==
4
) {
for
(i =
0
; i <
4
; i++) {
a4[i] =
b64_lookup
(a4[i]);
}
a4_to_a3
(a3,a4);
for
(i =
0
; i <
3
; i++) {
output[decLen++] = a3[i];
}
i =
0
;
}
}
if
(i) {
for
(j = i; j <
4
; j++) {
a4[j] =
'
\0
'
;
}
for
(j =
0
; j <
4
; j++) {
a4[j] =
b64_lookup
(a4[j]);
}
a4_to_a3
(a3,a4);
for
(j =
0
; j < i -
1
; j++) {
output[decLen++] = a3[j];
}
}
output[decLen] =
'
\0
'
;
return
decLen;
}
int
base64_enc_len
(
int
plainLen) {
int
n = plainLen;
return
(n +
2
- ((n +
2
) %
3
)) /
3
*
4
;
}
int
base64_dec_len
(
char
* input,
int
inputLen) {
int
i =
0
;
int
numEq =
0
;
for
(i = inputLen -
1
; input[i] ==
'
=
'
; i--) {
numEq++;
}
return
((
6
* inputLen) /
8
) - numEq;
}
inline
void
a3_to_a4
(
unsigned
char
* a4,
unsigned
char
* a3) {
a4[
0
] = (a3[
0
] &
0xfc
) >>
2
;
a4[
1
] = ((a3[
0
] &
0x03
) <<
4
) + ((a3[
1
] &
0xf0
) >>
4
);
a4[
2
] = ((a3[
1
] &
0x0f
) <<
2
) + ((a3[
2
] &
0xc0
) >>
6
);
a4[
3
] = (a3[
2
] &
0x3f
);
}
inline
void
a4_to_a3
(
unsigned
char
* a3,
unsigned
char
* a4) {
a3[
0
] = (a4[
0
] <<
2
) + ((a4[
1
] &
0x30
) >>
4
);
a3[
1
] = ((a4[
1
] &
0xf
) <<
4
) + ((a4[
2
] &
0x3c
) >>
2
);
a3[
2
] = ((a4[
2
] &
0x3
) <<
6
) + a4[
3
];
}
inline
unsigned
char
b64_lookup
(
char
c) {
int
i;
for
(i =
0
; i <
64
; i++) {
if
(b64_alphabet[i] == c) {
return
i;
}
}
return
-
1
;
}
Back
|
FazBrowse Home
|
New Git URL