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/* Copyright (C) 1996, 1999, 2002 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

#include <ctype.h>

#include <stdlib.h>

#include <string.h>

#include <netinet/ether.h>

#include <netinet/if_ether.h>

int

ether_line (const char *line, struct ether_addr *addr, char *hostname)

{

  size_t cnt;

  char *cp;

  for (cnt = 0; cnt < 6; ++cnt)

    {

      unsigned int number;

      char ch;

      ch = _tolower (*line++);

      if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f'))

        return -1;

      number = isdigit (ch) ? (ch - '0') : (ch - 'a' + 10);

      ch = _tolower (*line);

      if ((cnt < 5 && ch != ':') || (cnt == 5 && ch != '\0' && !isspace (ch)))

        {

          ++line;

          if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f'))

            return -1;

          number <<= 4;

          number += isdigit (ch) ? (ch - '0') : (ch - 'a' + 10);

          ch = *line;

          if (cnt < 5 && ch != ':')

            return -1;

        }

      /* Store result.  */

      addr->ether_addr_octet[cnt] = (unsigned char) number;

      /* Skip ':'.  */

      if (ch != '\0')

        ++line;

    }

  /* Remove trailing white space.  */

  cp = strchr (line, '#');

  if (cp == NULL)

    cp = line + strlen (line);

  while (cp > line && isspace (cp[-1]))

    --cp;

  if (cp == line)

    /* No hostname.  */

    return -1;

  /* XXX This can cause trouble because the hostname might be too long

     but we have no possibility to check it here.  */

  memcpy (hostname, line, cp - line);

  hostname [cp - line] = '\0';

  return 0;

}