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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 #pragma GCC visibility push(default)
    200 
    201 /* BIONIC-BEGIN */
    202 #define  h_errno   (*__get_h_errno())
    203 int*  __get_h_errno(void);
    204 /* BIONIC-END */
    205 void endhostent(void);
    206 void endnetent(void);
    207 void endnetgrent(void);
    208 void endprotoent(void);
    209 void endservent(void);
    210 void freehostent(struct hostent *);
    211 struct hostent	*gethostbyaddr(const void *, socklen_t, int);
    212 int gethostbyaddr_r(const void *, int, int, struct hostent *, char *, size_t, struct hostent **, int *);
    213 struct hostent	*gethostbyname(const char *);
    214 int gethostbyname_r(const char *, struct hostent *, char *, size_t, struct hostent **, int *);
    215 struct hostent	*gethostbyname2(const char *, int);
    216 int gethostbyname2_r(const char *, int, struct hostent *, char *, size_t, struct hostent **, int *);
    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 getnameinfo(const struct sockaddr *, socklen_t, char *, size_t, char *, size_t, int);
    245 void freeaddrinfo(struct addrinfo *);
    246 const char	*gai_strerror(int);
    247 void setnetgrent(const char *);
    248 void setservent(int);
    249 
    250 #pragma GCC visibility pop
    251 __END_DECLS
    252 
    253 #endif /* !_NETDB_H_ */
    254