1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (C) 2005 The FreeBSD Project.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD$
28 */
29
30#ifndef _NETDB_PRIVATE_H_
31#define _NETDB_PRIVATE_H_
32
33#include <stdio.h>				/* XXX: for FILE */
34
35#define	NETDB_THREAD_ALLOC(name)					\
36static struct name name;						\
37static thread_key_t name##_key;						\
38static once_t name##_init_once = ONCE_INITIALIZER;			\
39static int name##_thr_keycreated = 0;					\
40\
41static void name##_free(void *);					\
42\
43static void								\
44name##_keycreate(void)							\
45{									\
46	name##_thr_keycreated =						\
47	    (thr_keycreate(&name##_key, name##_free) == 0);		\
48}									\
49\
50struct name *								\
51__##name##_init(void)							\
52{									\
53	struct name *he;						\
54									\
55	if (thr_main() != 0)						\
56		return (&name);						\
57	if (thr_once(&name##_init_once, name##_keycreate) != 0 ||	\
58	    !name##_thr_keycreated)					\
59		return (NULL);						\
60	if ((he = thr_getspecific(name##_key)) != NULL)			\
61		return (he);						\
62	if ((he = calloc(1, sizeof(*he))) == NULL)			\
63		return (NULL);						\
64	if (thr_setspecific(name##_key, he) == 0)			\
65		return (he);						\
66	free(he);							\
67	return (NULL);							\
68}
69
70#define	_MAXALIASES	35
71#define	_MAXLINELEN	1024
72#define	_MAXADDRS	35
73#define	_HOSTBUFSIZE	(8 * 1024)
74#define	_NETBUFSIZE	1025
75
76struct hostent_data {
77	uint32_t host_addr[4];			/* IPv4 or IPv6 */
78	char *h_addr_ptrs[_MAXADDRS + 1];
79	char *host_aliases[_MAXALIASES];
80	char hostbuf[_HOSTBUFSIZE];
81	FILE *hostf;
82	int stayopen;
83#ifdef YP
84	char *yp_domain;
85#endif
86};
87
88struct netent_data {
89	char *net_aliases[_MAXALIASES];
90	char netbuf[_NETBUFSIZE];
91	FILE *netf;
92	int stayopen;
93#ifdef YP
94	char *yp_domain;
95#endif
96};
97
98struct protoent_data {
99	FILE *fp;
100	char *aliases[_MAXALIASES];
101	int stayopen;
102	char line[_MAXLINELEN + 1];
103};
104
105struct hostdata {
106	struct hostent host;
107	char data[sizeof(struct hostent_data)];
108};
109
110struct netdata {
111	struct netent net;
112	char data[sizeof(struct netent_data)];
113};
114
115struct protodata {
116	struct protoent proto;
117	char data[sizeof(struct protoent_data)];
118};
119
120struct hostdata *__hostdata_init(void);
121struct hostent *__hostent_init(void);
122struct hostent_data *__hostent_data_init(void);
123struct netdata *__netdata_init(void);
124struct netent_data *__netent_data_init(void);
125struct protodata *__protodata_init(void);
126struct protoent_data *__protoent_data_init(void);
127int __copy_hostent(struct hostent *, struct hostent *, char *, size_t);
128int __copy_netent(struct netent *, struct netent *, char *, size_t);
129int __copy_protoent(struct protoent *, struct protoent *, char *, size_t);
130
131void __endprotoent_p(struct protoent_data *);
132int __getprotoent_p(struct protoent *, struct protoent_data *);
133void __setprotoent_p(int, struct protoent_data *);
134void _endhostdnsent(void);
135void _endhosthtent(struct hostent_data *);
136void _endnetdnsent(void);
137void _endnethtent(struct netent_data *);
138void _map_v4v6_address(const char *, char *);
139void _map_v4v6_hostent(struct hostent *, char **, char *);
140void _sethostdnsent(int);
141void _sethosthtent(int, struct hostent_data *);
142void _setnetdnsent(int);
143void _setnethtent(int, struct netent_data *);
144
145struct hostent *__dns_getanswer(const char *, int, const char *, int);
146int _dns_gethostbyaddr(void *, void *, va_list);
147int _dns_gethostbyname(void *, void *, va_list);
148int _dns_getnetbyaddr(void *, void *, va_list);
149int _dns_getnetbyname(void *, void *, va_list);
150int _ht_gethostbyaddr(void *, void *, va_list);
151int _ht_gethostbyname(void *, void *, va_list);
152int _ht_getnetbyaddr(void *, void *, va_list);
153int _ht_getnetbyname(void *, void *, va_list);
154int _nis_gethostbyaddr(void *, void *, va_list);
155int _nis_gethostbyname(void *, void *, va_list);
156int _nis_getnetbyaddr(void *, void *, va_list);
157int _nis_getnetbyname(void *, void *, va_list);
158#ifdef NS_CACHING
159int __proto_id_func(char *, size_t *, va_list, void *);
160int __proto_marshal_func(char *, size_t *, void *, va_list, void *);
161int __proto_unmarshal_func(char *, size_t, void *, va_list, void *);
162#endif
163
164#endif /* _NETDB_PRIVATE_H_ */
165