bsd/libkern/inet_ntoa.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22
  23 /*
  24  * Copyright 1994, 1995 Massachusetts Institute of Technology
  25  *
  26  * Permission to use, copy, modify, and distribute this software and
  27  * its documentation for any purpose and without fee is hereby
  28  * granted, provided that both the above copyright notice and this
  29  * permission notice appear in all copies, that both the above
  30  * copyright notice and this permission notice appear in all
  31  * supporting documentation, and that the name of M.I.T. not be used
  32  * in advertising or publicity pertaining to distribution of the
  33  * software without specific, written prior permission.  M.I.T. makes
  34  * no representations about the suitability of this software for any
  35  * purpose.  It is provided "as is" without express or implied
  36  * warranty.
  37  *
  38  * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
  39  * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
  40  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  41  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
  42  * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  43  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  44  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  45  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  46  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  47  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  48  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  49  * SUCH DAMAGE.
  50  */
  51
  52 #include <sys/param.h>
  53 #include <sys/systm.h>
  54
  55 #include <netinet/in.h>
  56
  57 char *
  58 inet_ntoa(struct in_addr ina)
  59 {
  60         static char buf[4*sizeof "123"];
  61         unsigned char *ucp = (unsigned char *)&ina;
  62
  63         sprintf(buf, "%d.%d.%d.%d",
  64                 ucp[0] & 0xff,
  65                 ucp[1] & 0xff,
  66                 ucp[2] & 0xff,
  67                 ucp[3] & 0xff);
  68         return buf;
  69 }
  70