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92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/* Networks file parser in nss_files module.
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Copyright (C) 1996-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <stdint.h>
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#include <nss.h>
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NSS_DECLARE_MODULE_FUNCTIONS (files)
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#define ENTNAME netent
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#define DATABASE "networks"
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#define NEED_H_ERRNO
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struct netent_data {};
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#define TRAILING_LIST_MEMBER n_aliases
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#define TRAILING_LIST_SEPARATOR_P isspace
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#include "files-parse.c"
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LINE_PARSER
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("#",
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{
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char *addr;
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char *cp;
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int n = 1;
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STRING_FIELD (result->n_name, isspace, 1);
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STRING_FIELD (addr, isspace, 1);
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/* 'inet_network' does not add zeroes at the end if the network number
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does not four byte values. We add them outselves if necessary. */
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cp = strchr (addr, '.');
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if (cp != NULL)
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{
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++n;
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cp = strchr (cp + 1, '.');
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if (cp != NULL)
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{
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++n;
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cp = strchr (cp + 1, '.');
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if (cp != NULL)
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++n;
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}
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}
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if (n < 4)
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{
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char *newp = (char *) alloca (strlen (addr) + (4 - n) * 2 + 1);
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cp = stpcpy (newp, addr);
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do
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{
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*cp++ = '.';
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*cp++ = '0';
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}
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while (++n < 4);
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*cp = '\0';
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addr = newp;
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}
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result->n_net = inet_network (addr);
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result->n_addrtype = AF_INET;
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})
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#include "files-XXX.c"
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DB_LOOKUP (netbyname, ,,,
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LOOKUP_NAME_CASE (n_name, n_aliases),
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const char *name)
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DB_LOOKUP (netbyaddr, ,,,
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{
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if ((type == AF_UNSPEC || result->n_addrtype == type)
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&& result->n_net == net)
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/* Bingo! */
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break;
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}, uint32_t net, int type)
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