usr.sbin/pppd/eui64.c

   1 /*
   2     eui64.c - EUI64 routines for IPv6CP.
   3     Copyright (C) 1999  Tommi Komulainen <Tommi.Komulainen@iki.fi>
   4
   5     Redistribution and use in source and binary forms are permitted
   6     provided that the above copyright notice and this paragraph are
   7     duplicated in all such forms and that any documentation,
   8     advertising materials, and other materials related to such
   9     distribution and use acknowledge that the software was developed
  10     by Tommi Komulainen.  The name of the author may not be used
  11     to endorse or promote products derived from this software without
  12     specific prior written permission.
  13     THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  14     IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  15     WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  16
  17
  18     $Id: eui64.c,v 1.3 1999/08/25 04:15:51 paulus Exp $
  19 */
  20
  21 #ifndef lint
  22 #define RCSID   "$Id: eui64.c,v 1.3 1999/08/25 04:15:51 paulus Exp $"
  23 #endif
  24 #include <sys/cdefs.h>
  25 __FBSDID("$FreeBSD$");
  26
  27 #include "pppd.h"
  28
  29 #ifdef RCSID
  30 static const char rcsid[] = RCSID;
  31 #endif
  32
  33 /*
  34  * eui64_ntoa - Make an ascii representation of an interface identifier
  35  */
  36 char *
  37 eui64_ntoa(e)
  38     eui64_t e;
  39 {
  40     static char buf[32];
  41
  42     snprintf(buf, 32, "%02x%02x:%02x%02x:%02x%02x:%02x%02x",
  43              e.e8[0], e.e8[1], e.e8[2], e.e8[3],
  44              e.e8[4], e.e8[5], e.e8[6], e.e8[7]);
  45     return buf;
  46 }