inet_ntoa.c revision 106121 
1/*
2 * Copyright (c) 1983, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include "includes.h"
35
36#if defined(BROKEN_INET_NTOA) || !defined(HAVE_INET_NTOA)
37
38#if defined(LIBC_SCCS) && !defined(lint)
39static char rcsid[] = "$OpenBSD: inet_ntoa.c,v 1.3 2002/06/27 10:14:01 itojun Exp $";
40#endif /* LIBC_SCCS and not lint */
41
42/*
43 * Convert network-format internet address
44 * to base 256 d.d.d.d representation.
45 */
46#include <sys/types.h>
47#include <netinet/in.h>
48#include <arpa/inet.h>
49#include <stdio.h>
50#include "inet_ntoa.h"
51
52char *inet_ntoa(struct in_addr in)
53{
54	static char b[18];
55	register char *p;
56
57	p = (char *)&in;
58#define	UC(b)	(((int)b)&0xff)
59	(void)snprintf(b, sizeof(b),
60	    "%u.%u.%u.%u", UC(p[0]), UC(p[1]), UC(p[2]), UC(p[3]));
61	return (b);
62}
63
64#endif /* defined(BROKEN_INET_NTOA) || !defined(HAVE_INET_NTOA) */
65