xref: /freebsd/lib/libc/inet/inet_ntoa.c (revision 315ee00f)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1983, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #if defined(LIBC_SCCS) && !defined(lint)
33 static const char sccsid[] = "@(#)inet_ntoa.c	8.1 (Berkeley) 6/4/93";
34 static const char rcsid[] = "$Id: inet_ntoa.c,v 1.2 2005/04/27 04:56:21 sra Exp $";
35 #endif /* LIBC_SCCS and not lint */
36 #include <sys/cdefs.h>
37 #include "port_before.h"
38 
39 #include <sys/types.h>
40 #include <sys/socket.h>
41 #include <netinet/in.h>
42 #include <arpa/inet.h>
43 
44 #include <stdio.h>
45 #include <string.h>
46 
47 #include "port_after.h"
48 
49 /*%
50  * Convert network-format internet address
51  * to base 256 d.d.d.d representation.
52  */
53 /*const*/ char *
54 inet_ntoa(struct in_addr in) {
55 	static char ret[18];
56 
57 	strcpy(ret, "[inet_ntoa error]");
58 	(void) inet_ntop(AF_INET, &in, ret, sizeof ret);
59 	return (ret);
60 }
61 
62 char *
63 inet_ntoa_r(struct in_addr in, char *buf, socklen_t size)
64 {
65 
66 	(void) inet_ntop(AF_INET, &in, buf, size);
67 	return (buf);
68 }
69 
70 /*
71  * Weak aliases for applications that use certain private entry points,
72  * and fail to include <arpa/inet.h>.
73  */
74 #undef inet_ntoa
75 __weak_reference(__inet_ntoa, inet_ntoa);
76 __weak_reference(__inet_ntoa_r, inet_ntoa_r);
77 
78 /*! \file */
79