1/*
2 * Copyright (c) 2000 Markus Friedl.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include "includes.h"
26RCSID("$OpenBSD: uuencode.c,v 1.16 2002/09/09 14:54:15 markus Exp $");
27
28#pragma ident	"%Z%%M%	%I%	%E% SMI"
29
30#include "xmalloc.h"
31#include "uuencode.h"
32
33int
34uuencode(u_char *src, u_int srclength,
35    char *target, size_t targsize)
36{
37	return __b64_ntop(src, srclength, target, targsize);
38}
39
40int
41uudecode(const char *src, u_char *target, size_t targsize)
42{
43	int len;
44	char *encoded, *p;
45
46	/* copy the 'readonly' source */
47	encoded = xstrdup(src);
48	/* skip whitespace and data */
49	for (p = encoded; *p == ' ' || *p == '\t'; p++)
50		;
51	for (; *p != '\0' && *p != ' ' && *p != '\t'; p++)
52		;
53	/* and remove trailing whitespace because __b64_pton needs this */
54	*p = '\0';
55	len = __b64_pton((u_char *) encoded, target, targsize);
56	xfree(encoded);
57	return len;
58}
59
60void
61dump_base64(FILE *fp, u_char *data, u_int len)
62{
63	char *buf = xmalloc(2*len);
64	int i, n;
65
66	n = uuencode(data, len, buf, 2*len);
67	for (i = 0; i < n; i++) {
68		fprintf(fp, "%c", buf[i]);
69		if (i % 70 == 69)
70			fprintf(fp, "\n");
71	}
72	if (i % 70 != 69)
73		fprintf(fp, "\n");
74	xfree(buf);
75}
76