1/* Networks file parser in nss_files module.
2 Copyright (C) 1996-2017 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <netinet/in.h>
20#include <arpa/inet.h>
21#include <netdb.h>
22#include <stdint.h>
23
24#define ENTNAME netent
25#define DATABASE "networks"
26#define NEED_H_ERRNO
27
28struct netent_data {};
29
30#define TRAILING_LIST_MEMBER n_aliases
31#define TRAILING_LIST_SEPARATOR_P isspace
32#include "files-parse.c"
33LINE_PARSER
34("#",
35 {
36 char *addr;
37 char *cp;
38 int n = 1;
39
40 STRING_FIELD (result->n_name, isspace, 1);
41
42 STRING_FIELD (addr, isspace, 1);
43 /* 'inet_network' does not add zeroes at the end if the network number
44 does not four byte values. We add them outselves if necessary. */
45 cp = strchr (addr, '.');
46 if (cp != NULL)
47 {
48 ++n;
49 cp = strchr (cp + 1, '.');
50 if (cp != NULL)
51 {
52 ++n;
53 cp = strchr (cp + 1, '.');
54 if (cp != NULL)
55 ++n;
56 }
57 }
58 if (n < 4)
59 {
60 char *newp = (char *) alloca (strlen (addr) + (4 - n) * 2 + 1);
61 cp = stpcpy (newp, addr);
62 do
63 {
64 *cp++ = '.';
65 *cp++ = '0';
66 }
67 while (++n < 4);
68 *cp = '\0';
69 addr = newp;
70 }
71 result->n_net = inet_network (addr);
72 result->n_addrtype = AF_INET;
73
74 })
75
76#include "files-XXX.c"
77
78DB_LOOKUP (netbyname, ,,,
79 LOOKUP_NAME_CASE (n_name, n_aliases),
80 const char *name)
81
82DB_LOOKUP (netbyaddr, ,,,
83 {
84 if ((type == AF_UNSPEC || result->n_addrtype == type)
85 && result->n_net == net)
86 /* Bingo! */
87 break;
88 }, uint32_t net, int type)
89