release/src/router/pppd/pppd/eui64.c

   1 /*
   2  * eui64.c - EUI64 routines for IPv6CP.
   3  *
   4  * Copyright (c) 1999 Tommi Komulainen.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  *
  18  * 3. The name(s) of the authors of this software must not be used to
  19  *    endorse or promote products derived from this software without
  20  *    prior written permission.
  21  *
  22  * 4. Redistributions of any form whatsoever must retain the following
  23  *    acknowledgment:
  24  *    "This product includes software developed by Tommi Komulainen
  25  *     <Tommi.Komulainen@iki.fi>".
  26  *
  27  * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
  28  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  29  * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
  30  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  31  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
  32  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  33  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  34  *
  35  * $Id: eui64.c,v 1.6 2002/12/04 23:03:32 paulus Exp $
  36  */
  37
  38 #define RCSID   "$Id: eui64.c,v 1.6 2002/12/04 23:03:32 paulus Exp $"
  39
  40 #include "pppd.h"
  41
  42 static const char rcsid[] = RCSID;
  43
  44 /*
  45  * eui64_ntoa - Make an ascii representation of an interface identifier
  46  */
  47 char *
  48 eui64_ntoa(e)
  49     eui64_t e;
  50 {
  51     static char buf[32];
  52
  53     snprintf(buf, 32, "%02x%02x:%02x%02x:%02x%02x:%02x%02x",
  54              e.e8[0], e.e8[1], e.e8[2], e.e8[3],
  55              e.e8[4], e.e8[5], e.e8[6], e.e8[7]);
  56     return buf;
  57 }