| 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 | |