1/* Services file parser in nss_files module.
2 Copyright (C) 1996-2021 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 <https://www.gnu.org/licenses/>. */
18
19#include <netinet/in.h>
20#include <netdb.h>
21#include <nss.h>
22
23NSS_DECLARE_MODULE_FUNCTIONS (files)
24
25#define ENTNAME servent
26#define DATABASE "services"
27
28struct servent_data {};
29
30#define TRAILING_LIST_MEMBER s_aliases
31#define TRAILING_LIST_SEPARATOR_P isspace
32#include "files-parse.c"
33#define ISSLASH(c) ((c) == '/')
34LINE_PARSER
35("#",
36 STRING_FIELD (result->s_name, isspace, 1);
37 INT_FIELD (result->s_port, ISSLASH, 10, 0, htons);
38 STRING_FIELD (result->s_proto, isspace, 1);
39 )
40
41#include GENERIC
42
43DB_LOOKUP (servbyname, ':',
44 strlen (name) + 2 + (proto == NULL ? 0 : strlen (proto)),
45 ("%s/%s", name, proto ?: ""),
46 {
47 /* Must match both protocol (if specified) and name. */
48 if (proto != NULL && strcmp (result->s_proto, proto))
49 /* A continue statement here breaks nss_db, because it
50 bypasses advancing to the next db entry, and it
51 doesn't make nss_files any more efficient. */;
52 else
53 LOOKUP_NAME (s_name, s_aliases)
54 },
55 const char *name, const char *proto)
56
57DB_LOOKUP (servbyport, '=', 21 + (proto ? strlen (proto) : 0),
58 ("%zd/%s", (ssize_t) ntohs (port), proto ?: ""),
59 {
60 /* Must match both port and protocol. */
61 if (result->s_port == port
62 && (proto == NULL
63 || strcmp (result->s_proto, proto) == 0))
64 break;
65 }, int port, const char *proto)
66