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
|
/* base16enc -- an encoder for base16
*
* Copyright (C) 2006, 2012 Jeronimo Pellegrini, Niels Möller
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02111-1301, USA.
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#ifdef WIN32
#include <fcntl.h>
#endif
#include "base16.h"
#include "io.h"
/* The number of bytes read in each iteration, we do one line at a time: */
#define CHUNK_SIZE 36
/* The *maximum* size of an encoded chunk: */
#define ENCODED_SIZE BASE16_ENCODE_LENGTH(CHUNK_SIZE)
/*
* Reads bytes from standard input and writes base64-encoded
* on standard output.
*/
int
main(int argc UNUSED, char **argv UNUSED)
{
#ifdef WIN32
_setmode(0, O_BINARY);
#endif
/* There is no context to initialize. */
for (;;)
{
/* "buffer" will hold the bytes from disk: */
uint8_t buffer[CHUNK_SIZE];
/* "result" will hold bytes before output: */
uint8_t result[ENCODED_SIZE + 1];
unsigned nbytes; /* Number of bytes read from stdin */
int encoded_bytes; /* Total number of bytes encoded per iteration */
nbytes = fread(buffer,1,CHUNK_SIZE,stdin);
/* We overwrite result with more data */
base16_encode_update(result, nbytes, buffer);
encoded_bytes = BASE16_ENCODE_LENGTH(nbytes);
result[encoded_bytes++] = '\n';
if (nbytes < CHUNK_SIZE)
{
if (ferror(stdin))
{
werror ("Error reading file: %s\n", strerror(errno));
return EXIT_FAILURE;
}
if (!write_string (stdout, encoded_bytes, result)
|| fflush (stdout) != 0)
{
werror ("Error writing file: %s\n", strerror(errno));
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
/* The result vector is printed */
if (!write_string(stdout,encoded_bytes, result))
{
werror ("Error writing file: %s\n", strerror(errno));
return EXIT_FAILURE;
}
}
}
|
