uuencode.c revision 65668 
1/*	$OpenBSD: uuencode.c,v 1.7 2000/09/07 20:27:55 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
30#include <resolv.h>
31
32RCSID("$OpenBSD: uuencode.c,v 1.7 2000/09/07 20:27:55 deraadt Exp $");
33
34int
35uuencode(unsigned char *src, unsigned int srclength,
36    char *target, size_t targsize)
37{
38	return __b64_ntop(src, srclength, target, targsize);
39}
40
41int
42uudecode(const char *src, unsigned char *target, size_t targsize)
43{
44	int len;
45	char *encoded, *p;
46
47	/* copy the 'readonly' source */
48	encoded = xstrdup(src);
49	/* skip whitespace and data */
50	for (p = encoded; *p == ' ' || *p == '\t'; p++)
51		;
52	for (; *p != '\0' && *p != ' ' && *p != '\t'; p++)
53		;
54	/* and remote trailing whitespace because __b64_pton needs this */
55	*p = '\0';
56	len = __b64_pton(encoded, target, targsize);
57	xfree(encoded);
58	return len;
59}
60
61void
62dump_base64(FILE *fp, unsigned char *data, int len)
63{
64	unsigned char *buf = xmalloc(2*len);
65	int i, n;
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