bsd/libkern/inet_ntoa.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25
  26 /*
  27  * Copyright 1994, 1995 Massachusetts Institute of Technology
  28  *
  29  * Permission to use, copy, modify, and distribute this software and
  30  * its documentation for any purpose and without fee is hereby
  31  * granted, provided that both the above copyright notice and this
  32  * permission notice appear in all copies, that both the above
  33  * copyright notice and this permission notice appear in all
  34  * supporting documentation, and that the name of M.I.T. not be used
  35  * in advertising or publicity pertaining to distribution of the
  36  * software without specific, written prior permission.  M.I.T. makes
  37  * no representations about the suitability of this software for any
  38  * purpose.  It is provided "as is" without express or implied
  39  * warranty.
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
  42  * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
  43  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  44  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
  45  * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  46  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  47  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  48  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  49  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  50  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  51  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  */
  54
  55 #include <sys/param.h>
  56 #include <sys/systm.h>
  57
  58 #include <netinet/in.h>
  59
  60 char *
  61 inet_ntoa(struct in_addr ina)
  62 {
  63         static char buf[4*sizeof "123"];
  64         unsigned char *ucp = (unsigned char *)&ina;
  65
  66         sprintf(buf, "%d.%d.%d.%d",
  67                 ucp[0] & 0xff,
  68                 ucp[1] & 0xff,
  69                 ucp[2] & 0xff,
  70                 ucp[3] & 0xff);
  71         return buf;
  72 }
  73