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1 /*-
2  * Copyright (c) 1980, 1983, 1988, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *	This product includes software developed by the University of
16  *	California, Berkeley and its contributors.
17  * 4. Neither the name of the University nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  *
33  * -
34  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
35  *
36  * Permission to use, copy, modify, and distribute this software for any
37  * purpose with or without fee is hereby granted, provided that the above
38  * copyright notice and this permission notice appear in all copies, and that
39  * the name of Digital Equipment Corporation not be used in advertising or
40  * publicity pertaining to distribution of the document or software without
41  * specific, written prior permission.
42  *
43  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
44  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
45  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
46  * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
47  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
48  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
49  * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
50  * SOFTWARE.
51  * -
52  * --Copyright--
53  */
54 
55 /*
56  *      @(#)netdb.h	8.1 (Berkeley) 6/2/93
57  *      From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $
58  * $FreeBSD: /repoman/r/ncvs/src/include/netdb.h,v 1.41 2006/04/15 16:20:26 ume Exp $
59  */
60 
61 #ifndef _NETDB_H_
62 #define _NETDB_H_
63 
64 #include <sys/cdefs.h>
65 #include <sys/types.h>
66 #include <sys/socket.h>
67 
68 #ifndef _PATH_HEQUIV
69 # define	_PATH_HEQUIV	"/system/etc/hosts.equiv"
70 #endif
71 #define	_PATH_HOSTS	"/system/etc/hosts"
72 #define	_PATH_NETWORKS	"/system/etc/networks"
73 #define	_PATH_PROTOCOLS	"/system/etc/protocols"
74 #define	_PATH_SERVICES	"/system/etc/services"
75 
76 #define  MAXHOSTNAMELEN  256
77 
78 
79 /*
80  * Structures returned by network data base library.  All addresses are
81  * supplied in host order, and returned in network order (suitable for
82  * use in system calls).
83  */
84 struct hostent {
85 	char	*h_name;	/* official name of host */
86 	char	**h_aliases;	/* alias list */
87 	int	h_addrtype;	/* host address type */
88 	int	h_length;	/* length of address */
89 	char	**h_addr_list;	/* list of addresses from name server */
90 #define	h_addr	h_addr_list[0]	/* address, for backward compatibility */
91 };
92 
93 struct netent {
94 	char		*n_name;	/* official name of net */
95 	char		**n_aliases;	/* alias list */
96 	int		n_addrtype;	/* net address type */
97 	uint32_t	n_net;		/* network # */
98 };
99 
100 struct servent {
101 	char	*s_name;	/* official service name */
102 	char	**s_aliases;	/* alias list */
103 	int	s_port;		/* port # */
104 	char	*s_proto;	/* protocol to use */
105 };
106 
107 struct protoent {
108 	char	*p_name;	/* official protocol name */
109 	char	**p_aliases;	/* alias list */
110 	int	p_proto;	/* protocol # */
111 };
112 
113 struct addrinfo {
114 	int	ai_flags;	/* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
115 	int	ai_family;	/* PF_xxx */
116 	int	ai_socktype;	/* SOCK_xxx */
117 	int	ai_protocol;	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
118 	socklen_t ai_addrlen;	/* length of ai_addr */
119 	char	*ai_canonname;	/* canonical name for hostname */
120 	struct	sockaddr *ai_addr;	/* binary address */
121 	struct	addrinfo *ai_next;	/* next structure in linked list */
122 };
123 
124 /*
125  * Error return codes from gethostbyname() and gethostbyaddr()
126  * (left in h_errno).
127  */
128 
129 #define	NETDB_INTERNAL	-1	/* see errno */
130 #define	NETDB_SUCCESS	0	/* no problem */
131 #define	HOST_NOT_FOUND	1 /* Authoritative Answer Host not found */
132 #define	TRY_AGAIN	2 /* Non-Authoritative Host not found, or SERVERFAIL */
133 #define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
134 #define	NO_DATA		4 /* Valid name, no data record of requested type */
135 #define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */
136 
137 /*
138  * Error return codes from getaddrinfo()
139  */
140 #define	EAI_ADDRFAMILY	 1	/* address family for hostname not supported */
141 #define	EAI_AGAIN	 2	/* temporary failure in name resolution */
142 #define	EAI_BADFLAGS	 3	/* invalid value for ai_flags */
143 #define	EAI_FAIL	 4	/* non-recoverable failure in name resolution */
144 #define	EAI_FAMILY	 5	/* ai_family not supported */
145 #define	EAI_MEMORY	 6	/* memory allocation failure */
146 #define	EAI_NODATA	 7	/* no address associated with hostname */
147 #define	EAI_NONAME	 8	/* hostname nor servname provided, or not known */
148 #define	EAI_SERVICE	 9	/* servname not supported for ai_socktype */
149 #define	EAI_SOCKTYPE	10	/* ai_socktype not supported */
150 #define	EAI_SYSTEM	11	/* system error returned in errno */
151 #define	EAI_BADHINTS	12	/* invalid value for hints */
152 #define	EAI_PROTOCOL	13	/* resolved protocol is unknown */
153 #define	EAI_OVERFLOW	14	/* argument buffer overflow */
154 #define	EAI_MAX		15
155 
156 /*
157  * Flag values for getaddrinfo()
158  */
159 #define	AI_PASSIVE	0x00000001 /* get address to use bind() */
160 #define	AI_CANONNAME	0x00000002 /* fill ai_canonname */
161 #define	AI_NUMERICHOST	0x00000004 /* prevent host name resolution */
162 #define	AI_NUMERICSERV	0x00000008 /* prevent service name resolution */
163 /* valid flags for addrinfo (not a standard def, apps should not use it) */
164 #define AI_MASK \
165     (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \
166     AI_ADDRCONFIG)
167 
168 #define	AI_ALL		0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
169 #define	AI_V4MAPPED_CFG	0x00000200 /* accept IPv4-mapped if kernel supports */
170 #define	AI_ADDRCONFIG	0x00000400 /* only if any address is assigned */
171 #define	AI_V4MAPPED	0x00000800 /* accept IPv4-mapped IPv6 address */
172 /* special recommended flags for getipnodebyname */
173 #define	AI_DEFAULT	(AI_V4MAPPED_CFG | AI_ADDRCONFIG)
174 
175 /*
176  * Constants for getnameinfo()
177  */
178 #define	NI_MAXHOST	1025
179 #define	NI_MAXSERV	32
180 
181 /*
182  * Flag values for getnameinfo()
183  */
184 #define	NI_NOFQDN	0x00000001
185 #define	NI_NUMERICHOST	0x00000002
186 #define	NI_NAMEREQD	0x00000004
187 #define	NI_NUMERICSERV	0x00000008
188 #define	NI_DGRAM	0x00000010
189 #if 0 /* obsolete */
190 #define NI_WITHSCOPEID	0x00000020
191 #endif
192 
193 /*
194  * Scope delimit character
195  */
196 #define	SCOPE_DELIMITER	'%'
197 
198 __BEGIN_DECLS
199 /* BIONIC-BEGIN */
200 #define  h_errno   (*__get_h_errno())
201 int*  __get_h_errno(void);
202 /* BIONIC-END */
203 void endhostent(void);
204 void endnetent(void);
205 void endnetgrent(void);
206 void endprotoent(void);
207 void endservent(void);
208 void freehostent(struct hostent *);
209 struct hostent	*gethostbyaddr(const void *, socklen_t, int);
210 struct hostent	*android_gethostbyaddrforiface(const void *, socklen_t, int, const char*);
211 int gethostbyaddr_r(const void *, int, int, struct hostent *, char *, size_t, struct hostent **, int *);
212 struct hostent	*gethostbyname(const char *);
213 int gethostbyname_r(const char *, struct hostent *, char *, size_t, struct hostent **, int *);
214 struct hostent	*gethostbyname2(const char *, int);
215 int gethostbyname2_r(const char *, int, struct hostent *, char *, size_t, struct hostent **, int *);
216 struct hostent	*android_gethostbynameforiface(const char *, int, const char *);
217 struct hostent	*gethostent(void);
218 int gethostent_r(struct hostent *, char *, size_t, struct hostent **, int *);
219 struct hostent	*getipnodebyaddr(const void *, size_t, int, int *);
220 struct hostent	*getipnodebyname(const char *, int, int, int *);
221 struct netent	*getnetbyaddr(uint32_t, int);
222 int getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t, struct netent**, int *);
223 struct netent	*getnetbyname(const char *);
224 int getnetbyname_r(const char *, struct netent *, char *, size_t, struct netent **, int *);
225 struct netent	*getnetent(void);
226 int getnetent_r(struct netent *, char *, size_t, struct netent **, int *);
227 int getnetgrent(char **, char **, char **);
228 struct protoent	*getprotobyname(const char *);
229 int getprotobyname_r(const char *, struct protoent *, char *, size_t, struct protoent **);
230 struct protoent	*getprotobynumber(int);
231 int getprotobynumber_r(int, struct protoent *, char *, size_t, struct protoent **);
232 struct protoent	*getprotoent(void);
233 int getprotoent_r(struct protoent *, char *, size_t, struct protoent **);
234 struct servent	*getservbyname(const char *, const char *);
235 struct servent	*getservbyport(int, const char *);
236 struct servent	*getservent(void);
237 void herror(const char *);
238 const char	*hstrerror(int);
239 int innetgr(const char *, const char *, const char *, const char *);
240 void sethostent(int);
241 void setnetent(int);
242 void setprotoent(int);
243 int getaddrinfo(const char *, const char *, const struct addrinfo *, struct addrinfo **);
244 int android_getaddrinfoforiface(const char *, const char *, const struct addrinfo *, const char *, struct addrinfo **);
245 int getnameinfo(const struct sockaddr *, socklen_t, char *, size_t, char *, size_t, int);
246 int android_getnameinfoforiface(const struct sockaddr *, socklen_t, char *, size_t, char *, size_t, int, const char *);
247 void freeaddrinfo(struct addrinfo *);
248 const char	*gai_strerror(int);
249 void setnetgrent(const char *);
250 void setservent(int);
251 
252 __END_DECLS
253 
254 #endif /* !_NETDB_H_ */
255