nss/nss_files/files-ethers.c

   1 /* Copyright (C) 1996-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <string.h>
  19 #include <netinet/ether.h>
  20 #include <netinet/if_ether.h>
  21
  22 struct etherent_data {};
  23
  24 #define ENTNAME         etherent
  25 #define DATABASE        "ethers"
  26 #include "files-parse.c"
  27 LINE_PARSER
  28 ("#",
  29  /* Read the ethernet address: 6 x 8bit hexadecimal number.  */
  30  {
  31    size_t cnt;
  32
  33    for (cnt = 0; cnt < 6; ++cnt)
  34      {
  35        unsigned int number;
  36
  37        if (cnt < 5)
  38          INT_FIELD (number, ISCOLON , 0, 16, (unsigned int))
  39        else
  40          INT_FIELD (number, isspace, 1, 16, (unsigned int))
  41
  42        if (number > 0xff)
  43          return 0;
  44        result->e_addr.ether_addr_octet[cnt] = number;
  45      }
  46  };
  47  STRING_FIELD (result->e_name, isspace, 1);
  48  )
  49
  50
  51 #include GENERIC
  52
  53 DB_LOOKUP (hostton, '.', 0, ("%s", name),
  54            {
  55              if (__strcasecmp (result->e_name, name) == 0)
  56                break;
  57            }, const char *name)
  58
  59 DB_LOOKUP (ntohost, '=', 18, ("%x:%x:%x:%x:%x:%x",
  60                          addr->ether_addr_octet[0], addr->ether_addr_octet[1],
  61                          addr->ether_addr_octet[2], addr->ether_addr_octet[3],
  62                          addr->ether_addr_octet[4], addr->ether_addr_octet[5]),
  63            {
  64              if (memcmp (&result->e_addr, addr,
  65                          sizeof (struct ether_addr)) == 0)
  66                break;
  67            }, const struct ether_addr *addr)