1 | /* $NetBSD: intoa.c,v 1.3 2009/03/14 15:36:22 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 |
47 | char *intoa(u_int32_t); /* XXX */ |
48 | #endif |
49 | |
50 | /* Similar to inet_ntoa() */ |
51 | char * |
52 | intoa(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 | |