1/*	$NetBSD: intoa.c,v 1.2 2009/03/14 14:46:10 dsl Exp $	*/
2
3/*
4 * Copyright (c) 1992 Regents of the University of California.
5 * All rights reserved.
6 *
7 * This software was developed by the Computer Systems Engineering group
8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9 * contributed to Berkeley.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *	This product includes software developed by the University of
22 *	California, Lawrence Berkeley Laboratory and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 *    may be used to endorse or promote products derived from this software
25 *    without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 * @(#) Header: net.c,v 1.9 93/08/06 19:32:15 leres Exp  (LBL)
40 */
41
42#include <sys/types.h>
43
44#if defined(_KERNEL) || defined(_STANDALONE)
45#include <lib/libkern/libkern.h>
46#else
47char *intoa(u_int32_t); /* XXX */
48#endif
49
50/* Similar to inet_ntoa() */
51char *
52intoa(u_int32_t addr)
53{
54	char *cp;
55	u_int byte;
56	int n;
57	static char buf[17];	/* strlen(".255.255.255.255") + 1 */
58
59	addr = ntohl(addr);
60	cp = &buf[sizeof buf];
61	*--cp = '\0';
62
63	n = 4;
64	do {
65		byte = addr & 0xff;
66		*--cp = byte % 10 + '0';
67		byte /= 10;
68		if (byte > 0) {
69			*--cp = byte % 10 + '0';
70			byte /= 10;
71			if (byte > 0)
72				*--cp = byte + '0';
73		}
74		*--cp = '.';
75		addr >>= 8;
76	} while (--n > 0);
77
78	return (cp+1);
79}
80