uuencode.c revision 76259 
1/*	$OpenBSD: uuencode.c,v 1.12 2001/03/01 02:27:18 deraadt Exp $	*/
2
3/*
4 * Copyright (c) 2000 Markus Friedl.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "includes.h"
28#include "xmalloc.h"
29#include "uuencode.h"
30
31#include <resolv.h>
32
33RCSID("$OpenBSD: uuencode.c,v 1.12 2001/03/01 02:27:18 deraadt Exp $");
34
35int
36uuencode(u_char *src, u_int srclength,
37    char *target, size_t targsize)
38{
39	return __b64_ntop(src, srclength, target, targsize);
40}
41
42int
43uudecode(const char *src, u_char *target, size_t targsize)
44{
45	int len;
46	char *encoded, *p;
47
48	/* copy the 'readonly' source */
49	encoded = xstrdup(src);
50	/* skip whitespace and data */
51	for (p = encoded; *p == ' ' || *p == '\t'; p++)
52		;
53	for (; *p != '\0' && *p != ' ' && *p != '\t'; p++)
54		;
55	/* and remote trailing whitespace because __b64_pton needs this */
56	*p = '\0';
57	len = __b64_pton(encoded, target, targsize);
58	xfree(encoded);
59	return len;
60}
61
62void
63dump_base64(FILE *fp, u_char *data, int len)
64{
65	u_char *buf = xmalloc(2*len);
66	int i, n;
67
68	n = uuencode(data, len, buf, 2*len);
69	for (i = 0; i < n; i++) {
70		fprintf(fp, "%c", buf[i]);
71		if (i % 70 == 69)
72			fprintf(fp, "\n");
73	}
74	if (i % 70 != 69)
75		fprintf(fp, "\n");
76	xfree(buf);
77}
78