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/* Networks file parser in nss_files module.
Copyright (C) 1996-2024 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, see
<https://www.gnu.org/licenses/>. */
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdint.h>
#include <nss.h>
#define ENTNAME netent
#define DATABASE "networks"
#define NEED_H_ERRNO
struct netent_data {};
#define TRAILING_LIST_MEMBER n_aliases
#define TRAILING_LIST_SEPARATOR_P isspace
#include "files-parse.c"
LINE_PARSER
("#",
{
char *addr;
char *cp;
int n = 1;
STRING_FIELD (result->n_name, isspace, 1);
STRING_FIELD (addr, isspace, 1);
/* 'inet_network' does not add zeroes at the end if the network number
does not four byte values. We add them ourselves if necessary. */
cp = strchr (addr, '.');
if (cp != NULL)
{
++n;
cp = strchr (cp + 1, '.');
if (cp != NULL)
{
++n;
cp = strchr (cp + 1, '.');
if (cp != NULL)
++n;
}
}
if (n < 4)
{
char *newp = (char *) alloca (strlen (addr) + (4 - n) * 2 + 1);
cp = stpcpy (newp, addr);
do
{
*cp++ = '.';
*cp++ = '0';
}
while (++n < 4);
*cp = '\0';
addr = newp;
}
result->n_net = __inet_network (addr);
result->n_addrtype = AF_INET;
})
#include "files-XXX.c"
DB_LOOKUP (netbyname, ,,,
LOOKUP_NAME_CASE (n_name, n_aliases),
const char *name)
DB_LOOKUP (netbyaddr, ,,,
{
if ((type == AF_UNSPEC || result->n_addrtype == type)
&& result->n_net == net)
/* Bingo! */
break;
}, uint32_t net, int type)
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