uuencode.c revision 126274 
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 1.17 2003/11/10 16:23:41 jakob Exp $");
27
28#include "xmalloc.h"
29#include "uuencode.h"
30
31int
32uuencode(const u_char *src, u_int srclength,
33    char *target, size_t targsize)
34{
35	return __b64_ntop(src, srclength, target, targsize);
36}
37
38int
39uudecode(const char *src, u_char *target, size_t targsize)
40{
41	int len;
42	char *encoded, *p;
43
44	/* copy the 'readonly' source */
45	encoded = xstrdup(src);
46	/* skip whitespace and data */
47	for (p = encoded; *p == ' ' || *p == '\t'; p++)
48		;
49	for (; *p != '\0' && *p != ' ' && *p != '\t'; p++)
50		;
51	/* and remove trailing whitespace because __b64_pton needs this */
52	*p = '\0';
53	len = __b64_pton(encoded, target, targsize);
54	xfree(encoded);
55	return len;
56}
57
58void
59dump_base64(FILE *fp, u_char *data, u_int len)
60{
61	char *buf = xmalloc(2*len);
62	int i, n;
63
64	n = uuencode(data, len, buf, 2*len);
65	for (i = 0; i < n; i++) {
66		fprintf(fp, "%c", buf[i]);
67		if (i % 70 == 69)
68			fprintf(fp, "\n");
69	}
70	if (i % 70 != 69)
71		fprintf(fp, "\n");
72	xfree(buf);
73}
74