nss/nss_files/files-ethers.c

   1 /* Copyright (C) 1996-2021 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 #include <nss.h>
  22
  23 NSS_DECLARE_MODULE_FUNCTIONS (files)
  24
  25 struct etherent_data {};
  26
  27 #define ENTNAME         etherent
  28 #define DATABASE        "ethers"
  29 #include "files-parse.c"
  30 LINE_PARSER
  31 ("#",
  32  /* Read the ethernet address: 6 x 8bit hexadecimal number.  */
  33  {
  34    size_t cnt;
  35
  36    for (cnt = 0; cnt < 6; ++cnt)
  37      {
  38        unsigned int number;
  39
  40        if (cnt < 5)
  41          INT_FIELD (number, ISCOLON , 0, 16, (unsigned int))
  42        else
  43          INT_FIELD (number, isspace, 1, 16, (unsigned int))
  44
  45        if (number > 0xff)
  46          return 0;
  47        result->e_addr.ether_addr_octet[cnt] = number;
  48      }
  49  };
  50  STRING_FIELD (result->e_name, isspace, 1);
  51  )
  52
  53
  54 #include GENERIC
  55
  56 DB_LOOKUP (hostton, '.', 0, ("%s", name),
  57            {
  58              if (__strcasecmp (result->e_name, name) == 0)
  59                break;
  60            }, const char *name)
  61
  62 DB_LOOKUP (ntohost, '=', 18, ("%x:%x:%x:%x:%x:%x",
  63                          addr->ether_addr_octet[0], addr->ether_addr_octet[1],
  64                          addr->ether_addr_octet[2], addr->ether_addr_octet[3],
  65                          addr->ether_addr_octet[4], addr->ether_addr_octet[5]),
  66            {
  67              if (memcmp (&result->e_addr, addr,
  68                          sizeof (struct ether_addr)) == 0)
  69                break;
  70            }, const struct ether_addr *addr)