1/*
2 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
3 *
4 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
5 * Use is subject to license terms.
6 */
7
8/*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
9/*	  All Rights Reserved	*/
10
11/*
12 * BIND 4.9.3:
13 *
14 * Copyright (c) 1980, 1983, 1988, 1993
15 *	The Regents of the University of California.  All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
19 * are met:
20 * 1. Redistributions of source code must retain the above copyright
21 *    notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 *    notice, this list of conditions and the following disclaimer in the
24 *    documentation and/or other materials provided with the distribution.
25 * 3. All advertising materials mentioning features or use of this software
26 *    must display the following acknowledgement:
27 *	This product includes software developed by the University of
28 *	California, Berkeley and its contributors.
29 * 4. Neither the name of the University nor the names of its contributors
30 *    may be used to endorse or promote products derived from this software
31 *    without specific prior written permission.
32 *
33 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
34 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
36 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
37 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
39 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
41 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 * SUCH DAMAGE.
44 * -
45 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
46 *
47 * Permission to use, copy, modify, and distribute this software for any
48 * purpose with or without fee is hereby granted, provided that the above
49 * copyright notice and this permission notice appear in all copies, and that
50 * the name of Digital Equipment Corporation not be used in advertising or
51 * publicity pertaining to distribution of the document or software without
52 * specific, written prior permission.
53 *
54 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
55 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
56 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
57 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
58 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
59 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
60 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
61 * SOFTWARE.
62 * --Copyright--
63 *
64 * End BIND 4.9.3
65 */
66
67/*
68 * Structures returned by network data base library.
69 * All addresses are supplied in host order, and
70 * returned in network order (suitable for use in system calls).
71 */
72
73#ifndef _NETDB_H
74#define	_NETDB_H
75
76#include <sys/types.h>
77#include <netinet/in.h>
78#if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__)
79#include <sys/socket.h>
80#endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */
81#include <sys/feature_tests.h>
82
83#ifdef	__cplusplus
84extern "C" {
85#endif
86
87#define	_PATH_HEQUIV	"/etc/hosts.equiv"
88#define	_PATH_HOSTS	"/etc/hosts"
89#define	_PATH_IPNODES	"/etc/inet/ipnodes"
90#define	_PATH_IPSECALGS	"/etc/inet/ipsecalgs"
91#define	_PATH_NETMASKS	"/etc/netmasks"
92#define	_PATH_NETWORKS	"/etc/networks"
93#define	_PATH_PROTOCOLS	"/etc/protocols"
94#define	_PATH_SERVICES	"/etc/services"
95
96struct	hostent {
97	char	*h_name;	/* official name of host */
98	char	**h_aliases;	/* alias list */
99	int	h_addrtype;	/* host address type */
100	int	h_length;	/* length of address */
101	char	**h_addr_list;	/* list of addresses from name server */
102#define	h_addr	h_addr_list[0]	/* address, for backward compatiblity */
103};
104
105
106/*
107 * addrinfo introduced with IPv6 for Protocol-Independent Hostname
108 * and Service Name Translation.
109 */
110
111#if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__)
112struct addrinfo {
113	int ai_flags;		/* AI_PASSIVE, AI_CANONNAME, ... */
114	int ai_family;		/* PF_xxx */
115	int ai_socktype;	/* SOCK_xxx */
116	int ai_protocol;	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
117#ifdef __sparcv9
118	int _ai_pad;		/* for backwards compat with old size_t */
119#endif /* __sparcv9 */
120	socklen_t ai_addrlen;
121	char *ai_canonname;	/* canonical name for hostname */
122	struct sockaddr *ai_addr;	/* binary address */
123	struct addrinfo *ai_next;	/* next structure in linked list */
124};
125
126/*
127 * The flag 0x8000 is currently reserved for private use between libnsl and
128 * libsocket. See lib/libsocket/inet/getaddrinfo.c for more information.
129 */
130/* addrinfo flags */
131#define	AI_PASSIVE	0x0008	/* intended for bind() + listen() */
132#define	AI_CANONNAME	0x0010	/* return canonical version of host */
133#define	AI_NUMERICHOST	0x0020	/* use numeric node address string */
134#define	AI_NUMERICSERV	0x0040	/* servname is assumed numeric */
135
136/* getipnodebyname() flags */
137#define	AI_V4MAPPED	0x0001	/* IPv4 mapped addresses if no IPv6 */
138#define	AI_ALL		0x0002	/* IPv6 and IPv4 mapped addresses */
139#define	AI_ADDRCONFIG	0x0004	/* AAAA or A records only if IPv6/IPv4 cnfg'd */
140
141
142/*
143 * These were defined in RFC 2553 but not SUSv3
144 * or RFC 3493 which obsoleted 2553.
145 */
146#if !defined(_XPG6) || defined(__EXTENSIONS__)
147#define	AI_DEFAULT	(AI_V4MAPPED | AI_ADDRCONFIG)
148
149/* addrinfo errors */
150#define	EAI_ADDRFAMILY	1	/* address family not supported */
151#define	EAI_NODATA	7	/* no address */
152#endif /* !defined(_XPG6) || defined(__EXTENSIONS__) */
153#define	EAI_AGAIN	2	/* DNS temporary failure */
154#define	EAI_BADFLAGS	3	/* invalid ai_flags */
155#define	EAI_FAIL	4	/* DNS non-recoverable failure */
156#define	EAI_FAMILY	5	/* ai_family not supported */
157#define	EAI_MEMORY	6	/* memory allocation failure */
158#define	EAI_NONAME	8	/* host/servname not known */
159#define	EAI_SERVICE	9	/* servname not supported for ai_socktype */
160#define	EAI_SOCKTYPE	10	/* ai_socktype not supported */
161#define	EAI_SYSTEM	11	/* system error in errno */
162#define	EAI_OVERFLOW	12	/* argument buffer overflow */
163#define	EAI_PROTOCOL	13
164#define	EAI_MAX		14
165
166/* getnameinfo flags */
167#define	NI_NOFQDN	0x0001
168#define	NI_NUMERICHOST	0x0002	/* return numeric form of address */
169#define	NI_NAMEREQD	0x0004	/* request DNS name */
170#define	NI_NUMERICSERV	0x0008
171#define	NI_DGRAM	0x0010
172
173#if !defined(_XPG6) || defined(__EXTENSIONS__)
174/* Not listed in any standards document */
175#define	NI_WITHSCOPEID  0x0020
176#define	NI_NUMERICSCOPE 0x0040
177
178/* getnameinfo max sizes as defined in RFC 2553 obsoleted in RFC 3493 */
179#define	NI_MAXHOST	1025
180#define	NI_MAXSERV	32
181#endif /* !defined(_XPG6) || defined(__EXTENSIONS__) */
182#endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */
183
184/*
185 * Scope delimit character
186 */
187#define	SCOPE_DELIMITER	'%'
188
189
190/*
191 * Algorithm entry for /etc/inet/ipsecalgs which defines IPsec protocols
192 * and algorithms.
193 */
194#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
195typedef struct ipsecalgent {
196	char **a_names;		/* algorithm names */
197	int a_proto_num;	/* protocol number */
198	int a_alg_num;		/* algorithm number */
199	char *a_mech_name;	/* encryption framework mechanism name */
200	int *a_block_sizes;	/* supported block sizes */
201	int *a_key_sizes;	/* supported key sizes */
202	int a_key_increment;	/* key size increment */
203	int *a_mech_params;	/* mechanism specific parameters */
204	int a_alg_flags;	/* algorithm flags */
205} ipsecalgent_t;
206
207/* well-known IPsec protocol numbers */
208
209#define	IPSEC_PROTO_AH		2
210#define	IPSEC_PROTO_ESP		3
211#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
212
213/*
214 * Assumption here is that a network number
215 * fits in 32 bits -- probably a poor one.
216 */
217struct	netent {
218	char		*n_name;	/* official name of net */
219	char		**n_aliases;	/* alias list */
220	int		n_addrtype;	/* net address type */
221	in_addr_t	n_net;		/* network # */
222};
223
224struct	protoent {
225	char	*p_name;	/* official protocol name */
226	char	**p_aliases;	/* alias list */
227	int	p_proto;	/* protocol # */
228};
229
230struct	servent {
231	char	*s_name;	/* official service name */
232	char	**s_aliases;	/* alias list */
233	int	s_port;		/* port # */
234	char	*s_proto;	/* protocol to use */
235};
236
237#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
238struct hostent	*gethostbyname_r
239	(const char *, struct hostent *, char *, int, int *h_errnop);
240struct hostent	*gethostbyaddr_r
241	(const char *, int, int, struct hostent *, char *, int, int *h_errnop);
242struct hostent	*getipnodebyname(const char *, int, int, int *);
243struct hostent	*getipnodebyaddr(const void *, size_t, int, int *);
244void		freehostent(struct hostent *);
245struct hostent	*gethostent_r(struct hostent *, char *, int, int *h_errnop);
246
247struct servent	*getservbyname_r
248	(const char *name, const char *, struct servent *, char *, int);
249struct servent	*getservbyport_r
250	(int port, const char *, struct servent *, char *, int);
251struct servent	*getservent_r(struct	servent *, char *, int);
252
253struct netent	*getnetbyname_r
254	(const char *, struct netent *, char *, int);
255struct netent	*getnetbyaddr_r(long, int, struct netent *, char *, int);
256struct netent	*getnetent_r(struct netent *, char *, int);
257
258struct protoent	*getprotobyname_r
259	(const char *, struct protoent *, char *, int);
260struct protoent	*getprotobynumber_r
261	(int, struct protoent *, char *, int);
262struct protoent	*getprotoent_r(struct protoent *, char *, int);
263
264int getnetgrent_r(char **, char **, char **, char *, int);
265int innetgr(const char *, const char *, const char *, const char *);
266#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
267
268/* Old interfaces that return a pointer to a static area;  MT-unsafe */
269struct hostent	*gethostbyname(const char *);
270struct hostent	*gethostent(void);
271struct netent	*getnetbyaddr(in_addr_t, int);
272struct netent	*getnetbyname(const char *);
273struct netent	*getnetent(void);
274struct protoent	*getprotobyname(const char *);
275struct protoent	*getprotobynumber(int);
276struct protoent	*getprotoent(void);
277struct servent	*getservbyname(const char *, const char *);
278struct servent	*getservbyport(int, const char *);
279struct servent	*getservent(void);
280
281/* gethostbyaddr() second argument is a size_t only in unix95/unix98 */
282#if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__)
283struct hostent	*gethostbyaddr(const void *, socklen_t, int);
284#else
285struct hostent	*gethostbyaddr(const void *, size_t, int);
286#endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */
287
288#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
289int endhostent(void);
290int endnetent(void);
291int endprotoent(void);
292int endservent(void);
293int sethostent(int);
294int setnetent(int);
295int setprotoent(int);
296int setservent(int);
297#else
298void endhostent(void);
299void endnetent(void);
300void endprotoent(void);
301void endservent(void);
302void sethostent(int);
303void setnetent(int);
304void setprotoent(int);
305void setservent(int);
306#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
307
308#if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__)
309
310#ifdef	_XPG6
311#ifdef	__PRAGMA_REDEFINE_EXTNAME
312#pragma redefine_extname getaddrinfo __xnet_getaddrinfo
313#else	/* __PRAGMA_REDEFINE_EXTNAME */
314#define	getaddrinfo __xnet_getaddrinfo
315#endif	/* __PRAGMA_REDEFINE_EXTNAME */
316#endif	/* _XPG6 */
317
318int		getaddrinfo(const char *_RESTRICT_KYWD,
319			const char *_RESTRICT_KYWD,
320			const struct addrinfo *_RESTRICT_KYWD,
321			struct addrinfo **_RESTRICT_KYWD);
322void		freeaddrinfo(struct addrinfo *);
323const char	*gai_strerror(int);
324int		getnameinfo(const struct sockaddr *_RESTRICT_KYWD,
325			socklen_t, char *_RESTRICT_KYWD, socklen_t,
326			char *_RESTRICT_KYWD, socklen_t, int);
327#endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */
328
329#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
330int getnetgrent(char **, char **, char **);
331int setnetgrent(const char *);
332int endnetgrent(void);
333int rcmd(char **, unsigned short,
334	const char *, const char *, const char *, int *);
335int rcmd_af(char **, unsigned short,
336	const char *, const char *, const char *, int *, int);
337int rresvport_af(int *, int);
338int rresvport_addr(int *, struct sockaddr_storage *);
339int rexec(char **, unsigned short,
340	const char *, const char *, const char *, int *);
341int rexec_af(char **, unsigned short,
342	const char *, const char *, const char *, int *, int);
343int rresvport(int *);
344int ruserok(const char *, int, const char *, const char *);
345/* BIND */
346struct hostent	*gethostbyname2(const char *, int);
347void		herror(const char *);
348const char	*hstrerror(int);
349/* End BIND */
350
351/* IPsec algorithm prototype definitions */
352struct ipsecalgent *getipsecalgbyname(const char *, int, int *);
353struct ipsecalgent *getipsecalgbynum(int, int, int *);
354int getipsecprotobyname(const char *doi_name);
355char *getipsecprotobynum(int doi_domain);
356void freeipsecalgent(struct ipsecalgent *ptr);
357/* END IPsec algorithm prototype definitions */
358
359#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
360
361/*
362 * Error return codes from gethostbyname() and gethostbyaddr()
363 * (when using the resolver)
364 */
365
366extern  int h_errno;
367
368#ifdef	_REENTRANT
369extern int	*__h_errno(void);
370
371/* Only #define h_errno if there is no conflict with other use */
372#ifdef	H_ERRNO_IS_FUNCTION
373#define	h_errno	(*__h_errno())
374#endif	/* NO_H_ERRNO_DEFINE */
375#endif	/* _REENTRANT */
376
377/*
378 * Error return codes from gethostbyname() and gethostbyaddr()
379 * (left in extern int h_errno).
380 */
381#define	HOST_NOT_FOUND	1 /* Authoritive Answer Host not found */
382#define	TRY_AGAIN	2 /* Non-Authoritive Host not found, or SERVERFAIL */
383#define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
384#define	NO_DATA		4 /* Valid name, no data record of requested type */
385
386#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
387#define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */
388
389/* BIND */
390#define	NETDB_INTERNAL	-1	/* see errno */
391#define	NETDB_SUCCESS	0	/* no problem */
392/* End BIND */
393
394#define	MAXHOSTNAMELEN	256
395
396#define	MAXALIASES	35
397#define	MAXADDRS	35
398#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
399
400#ifdef	__cplusplus
401}
402#endif
403
404#endif	/* _NETDB_H */
405