base64.c
3.19 KB
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
/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001, 2002, 2005, 2007, 2010 Free Software
Foundation, Inc.
GNU Mailutils 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 3, or (at your option)
any later version.
GNU Mailutils 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Mailutils; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301 USA */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <unistd.h>
#include <stdio.h>
#include <assert.h>
#include <ctype.h>
#include <string.h>
#include <mailutils/mailutils.h>
#define ISPRINT(c) ((c)>=' '&&(c)<127)
int verbose = 0;
int printable = 0;
static void
c_copy (mu_stream_t out, mu_stream_t in)
{
MU_ASSERT (mu_stream_copy (out, in, 0));
mu_stream_close (out);
mu_stream_close (in);
if (verbose)
fprintf (stderr, "\ntotal: %lu/%lu bytes\n",
(unsigned long) mu_stream_bytes_in (in),
(unsigned long) mu_stream_bytes_out (out));
}
int
main (int argc, char * argv [])
{
mu_stream_t in, out, flt;
int c;
int mode = MU_FILTER_ENCODE;
int flags = MU_STREAM_READ;
char *input = NULL, *output = NULL;
char *encoding = "base64";
mu_off_t shift = 0;
while ((c = getopt (argc, argv, "deE:hi:o:ps:vw")) != EOF)
switch (c)
{
case 'i':
input = optarg;
break;
case 'o':
output = optarg;
break;
case 'd':
mode = MU_FILTER_DECODE;
break;
case 'E':
encoding = optarg;
break;
case 'e':
mode = MU_FILTER_ENCODE;
break;
case 'p':
printable = 1; /* FIXME: Not implemented */
break;
case 's':
shift = strtoul (optarg, NULL, 0);
break;
case 'v':
verbose = 1;
break;
case 'h':
printf ("usage: base64 [-vpde][-E encoding][-i infile][-o outfile]\n");
exit (0);
case 'w':
flags = MU_STREAM_WRITE;
break;
default:
exit (1);
}
if (input)
MU_ASSERT (mu_file_stream_create (&in, input, MU_STREAM_READ|MU_STREAM_SEEK));
else
MU_ASSERT (mu_stdio_stream_create (&in, MU_STDIN_FD, 0));
MU_ASSERT (mu_stream_open (in));
if (output)
MU_ASSERT (mu_file_stream_create (&out, output,
MU_STREAM_WRITE|MU_STREAM_CREAT));
else
MU_ASSERT (mu_stdio_stream_create (&out, MU_STDOUT_FD, 0));
MU_ASSERT (mu_stream_open (out));
if (flags == MU_STREAM_READ)
{
MU_ASSERT (mu_filter_create (&flt, in, encoding, mode,
MU_STREAM_READ|MU_STREAM_SEEK));
if (shift)
MU_ASSERT (mu_stream_seek (flt, shift, MU_SEEK_SET, NULL));
c_copy (out, flt);
}
else
{
MU_ASSERT (mu_filter_create (&flt, out, encoding, mode,
MU_STREAM_WRITE));
if (shift)
MU_ASSERT (mu_stream_seek (in, shift, MU_SEEK_SET, NULL));
c_copy (flt, in);
}
return 0;
}