/*
 * Copied from OpenSolaris 10 public sources
 * http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/head/netdb.h
 */
/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
/*	  All Rights Reserved  	*/

/*
 * BIND 4.9.3:
 *
 * Copyright (c) 1980, 1983, 1988, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * -
 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies, and that
 * the name of Digital Equipment Corporation not be used in advertising or
 * publicity pertaining to distribution of the document or software without
 * specific, written prior permission.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 * --Copyright--
 *
 * End BIND 4.9.3
 */

/*
 * Structures returned by network data base library.
 * All addresses are supplied in host order, and
 * returned in network order (suitable for use in system calls).
 */

#ifndef _NETDB_H
#define	_NETDB_H

#include <sys/types.h>
#include <netinet/in.h>
#if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__)
#include <sys/socket.h>
#endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */
#include <sys/feature_tests.h>

#ifdef	__cplusplus
extern "C" {
#endif

#define	_PATH_HEQUIV	"/etc/hosts.equiv"
#define	_PATH_HOSTS	"/etc/hosts"
#define	_PATH_IPNODES	"/etc/inet/ipnodes"
#define	_PATH_IPSECALGS	"/etc/inet/ipsecalgs"
#define	_PATH_NETMASKS	"/etc/netmasks"
#define	_PATH_NETWORKS	"/etc/networks"
#define	_PATH_PROTOCOLS	"/etc/protocols"
#define	_PATH_SERVICES	"/etc/services"

    struct	hostent {
        char	*h_name;	/* official name of host */
        char	**h_aliases;	/* alias list */
        int	h_addrtype;	/* host address type */
        int	h_length;	/* length of address */
        char	**h_addr_list;	/* list of addresses from name server */
#define	h_addr	h_addr_list[0]	/* address, for backward compatiblity */
    };

    /*
     * addrinfo introduced with IPv6 for Protocol-Independent Hostname
     * and Service Name Translation.
     */

#if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__)
    struct addrinfo {
        int ai_flags;		/* AI_PASSIVE, AI_CANONNAME, ... */
        int ai_family;		/* PF_xxx */
        int ai_socktype;	/* SOCK_xxx */
        int ai_protocol;	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
#ifdef __sparcv9
        int _ai_pad;		/* for backwards compat with old size_t */
#endif /* __sparcv9 */
        socklen_t ai_addrlen;
        char *ai_canonname;	/* canonical name for hostname */
        struct sockaddr *ai_addr;	/* binary address */
        struct addrinfo *ai_next;	/* next structure in linked list */
    };

    /* addrinfo flags */
#define	AI_PASSIVE	0x0008	/* intended for bind() + listen() */
#define	AI_CANONNAME	0x0010	/* return canonical version of host */
#define	AI_NUMERICHOST	0x0020	/* use numeric node address string */
#define	AI_NUMERICSERV	0x0040	/* servname is assumed numeric */

    /* getipnodebyname() flags */
#define	AI_V4MAPPED	0x0001	/* IPv4 mapped addresses if no IPv6 */
#define	AI_ALL		0x0002	/* IPv6 and IPv4 mapped addresses */
#define	AI_ADDRCONFIG	0x0004	/* AAAA or A records only if IPv6/IPv4 cnfg'd */

    /*
     * These were defined in RFC 2553 but not SUSv3
     * or RFC 3493 which obsoleted 2553.
     */
#if !defined(_XPG6) || defined(__EXTENSIONS__)
#define	AI_DEFAULT	(AI_V4MAPPED | AI_ADDRCONFIG)

    /* addrinfo errors */
#define	EAI_ADDRFAMILY	1	/* address family not supported */
#define	EAI_NODATA	7	/* no address */
#endif /* !defined(_XPG6) || defined(__EXTENSIONS__) */
#define	EAI_AGAIN	2	/* DNS temporary failure */
#define	EAI_BADFLAGS	3	/* invalid ai_flags */
#define	EAI_FAIL	4	/* DNS non-recoverable failure */
#define	EAI_FAMILY	5	/* ai_family not supported */
#define	EAI_MEMORY	6	/* memory allocation failure */
#define	EAI_NONAME	8	/* host/servname not known */
#define	EAI_SERVICE	9	/* servname not supported for ai_socktype */
#define	EAI_SOCKTYPE	10	/* ai_socktype not supported */
#define	EAI_SYSTEM	11	/* system error in errno */
#define	EAI_OVERFLOW	12	/* argument buffer overflow */
#define	EAI_PROTOCOL	13
#define	EAI_MAX		14

    /* getnameinfo flags */
#define	NI_NOFQDN	0x0001
#define	NI_NUMERICHOST	0x0002	/* return numeric form of address */
#define	NI_NAMEREQD	0x0004	/* request DNS name */
#define	NI_NUMERICSERV	0x0008
#define	NI_DGRAM	0x0010

#if !defined(_XPG6) || defined(__EXTENSIONS__)
    /* Not listed in any standards document */
#define	NI_WITHSCOPEID  0x0020
#define	NI_NUMERICSCOPE 0x0040

    /* getnameinfo max sizes as defined in RFC 2553 obsoleted in RFC 3493 */
#define	NI_MAXHOST	1025
#define	NI_MAXSERV	32
#endif /* !defined(_XPG6) || defined(__EXTENSIONS__) */
#endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */

    /*
     * Scope delimit character
     */
#define	SCOPE_DELIMITER	'%'

    /*
     * Algorithm entry for /etc/inet/ipsecalgs which defines IPsec protocols
     * and algorithms.
     */
#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
    typedef struct ipsecalgent {
        char **a_names;		/* algorithm names */
        int a_proto_num;	/* protocol number */
        int a_alg_num;		/* algorithm number */
        char *a_mech_name;	/* encryption framework mechanism name */
        int *a_block_sizes;	/* supported block sizes */
        int *a_key_sizes;	/* supported key sizes */
        int a_key_increment;	/* key size increment */
        int *a_mech_params;	/* mechanism specific parameters */
        int a_alg_flags;	/* algorithm flags */
    } ipsecalgent_t;

    /* well-known IPsec protocol numbers */

#define	IPSEC_PROTO_AH		2
#define	IPSEC_PROTO_ESP		3
#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */

    /*
     * Assumption here is that a network number
     * fits in 32 bits -- probably a poor one.
     */
    struct	netent {
        char		*n_name;	/* official name of net */
        char		**n_aliases;	/* alias list */
        int		n_addrtype;	/* net address type */
        in_addr_t	n_net;		/* network # */
    };

    struct	protoent {
        char	*p_name;	/* official protocol name */
        char	**p_aliases;	/* alias list */
        int	p_proto;	/* protocol # */
    };

    struct	servent {
        char	*s_name;	/* official service name */
        char	**s_aliases;	/* alias list */
        int	s_port;		/* port # */
        char	*s_proto;	/* protocol to use */
    };

#ifdef	__STDC__
#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
    struct hostent	*gethostbyname_r
    (const char *, struct hostent *, char *, int, int *h_errnop);
    struct hostent	*gethostbyaddr_r
    (const char *, int, int, struct hostent *, char *, int, int *h_errnop);
    struct hostent	*getipnodebyname(const char *, int, int, int *);
    struct hostent	*getipnodebyaddr(const void *, size_t, int, int *);
    void		freehostent(struct hostent *);
    struct hostent	*gethostent_r(struct hostent *, char *, int, int *h_errnop);

    struct servent	*getservbyname_r
    (const char *name, const char *, struct servent *, char *, int);
    struct servent	*getservbyport_r
    (int port, const char *, struct servent *, char *, int);
    struct servent	*getservent_r(struct	servent *, char *, int);

    struct netent	*getnetbyname_r
    (const char *, struct netent *, char *, int);
    struct netent	*getnetbyaddr_r(long, int, struct netent *, char *, int);
    struct netent	*getnetent_r(struct netent *, char *, int);

    struct protoent	*getprotobyname_r
    (const char *, struct protoent *, char *, int);
    struct protoent	*getprotobynumber_r
    (int, struct protoent *, char *, int);
    struct protoent	*getprotoent_r(struct protoent *, char *, int);

    int getnetgrent_r(char **, char **, char **, char *, int);
    int innetgr(const char *, const char *, const char *, const char *);
#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */

    /* Old interfaces that return a pointer to a static area;  MT-unsafe */
    struct hostent	*gethostbyname(const char *);
    struct hostent	*gethostent(void);
    struct netent	*getnetbyaddr(in_addr_t, int);
    struct netent	*getnetbyname(const char *);
    struct netent	*getnetent(void);
    struct protoent	*getprotobyname(const char *);
    struct protoent	*getprotobynumber(int);
    struct protoent	*getprotoent(void);
    struct servent	*getservbyname(const char *, const char *);
    struct servent	*getservbyport(int, const char *);
    struct servent	*getservent(void);

    /* gethostbyaddr() second argument is a size_t only in unix95/unix98 */
#if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__)
    struct hostent	*gethostbyaddr(const void *, socklen_t, int);
#else
    struct hostent	*gethostbyaddr(const void *, size_t, int);
#endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */

#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
    int endhostent(void);
    int endnetent(void);
    int endprotoent(void);
    int endservent(void);
    int sethostent(int);
    int setnetent(int);
    int setprotoent(int);
    int setservent(int);
#else
    void endhostent(void);
    void endnetent(void);
    void endprotoent(void);
    void endservent(void);
    void sethostent(int);
    void setnetent(int);
    void setprotoent(int);
    void setservent(int);
#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */

#if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__)

#ifdef	_XPG6
#ifdef	__PRAGMA_REDEFINE_EXTNAME
#pragma redefine_extname getaddrinfo __xnet_getaddrinfo
#else	/* __PRAGMA_REDEFINE_EXTNAME */
#define	getaddrinfo __xnet_getaddrinfo
#endif	/* __PRAGMA_REDEFINE_EXTNAME */
#endif	/* _XPG6 */

    int		getaddrinfo(const char *_RESTRICT_KYWD1,
                     const char *_RESTRICT_KYWD2,
                     const struct addrinfo *_RESTRICT_KYWD3,
                     struct addrinfo **_RESTRICT_KYWD4);
    void		freeaddrinfo(struct addrinfo *);
    const char	*gai_strerror(int);
    int		getnameinfo(const struct sockaddr *_RESTRICT_KYWD1,
                     socklen_t, char *_RESTRICT_KYWD2, socklen_t,
                     char *_RESTRICT_KYWD3, socklen_t, int);
#endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */

#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
    int getnetgrent(char **, char **, char **);
    int setnetgrent(const char *);
    int endnetgrent(void);
    int rcmd(char **, unsigned short,
             const char *, const char *, const char *, int *);
    int rcmd_af(char **, unsigned short,
                const char *, const char *, const char *, int *, int);
    int rresvport_af(int *, int);
    int rresvport_addr(int *, struct sockaddr_storage *);
    int rexec(char **, unsigned short,
              const char *, const char *, const char *, int *);
    int rexec_af(char **, unsigned short,
                 const char *, const char *, const char *, int *, int);
    int rresvport(int *);
    int ruserok(const char *, int, const char *, const char *);
    /* BIND */
    struct hostent	*gethostbyname2(const char *, int);
    void		herror(const char *);
    const char	*hstrerror(int);
    /* End BIND */

    /* IPsec algorithm prototype definitions */
    struct ipsecalgent *getipsecalgbyname(const char *, int, int *);
    struct ipsecalgent *getipsecalgbynum(int, int, int *);
    int getipsecprotobyname(const char *doi_name);
    char *getipsecprotobynum(int doi_domain);
    void freeipsecalgent(struct ipsecalgent *ptr);
    /* END IPsec algorithm prototype definitions */

#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
#else	/* __STDC__ */
    struct hostent	*gethostbyname_r();
    struct hostent	*gethostbyaddr_r();
    struct hostent	*getipnodebyname();
    struct hostent	*getipnodebyaddr();
    void		 freehostent();
    struct hostent	*gethostent_r();
    struct servent	*getservbyname_r();
    struct servent	*getservbyport_r();
    struct servent	*getservent_r();
    struct netent	*getnetbyname_r();
    struct netent	*getnetbyaddr_r();
    struct netent	*getnetent_r();
    struct protoent	*getprotobyname_r();
    struct protoent	*getprotobynumber_r();
    struct protoent	*getprotoent_r();
    int		 getnetgrent_r();
    int		 innetgr();

    /* Old interfaces that return a pointer to a static area;  MT-unsafe */
    struct hostent	*gethostbyname();
    struct hostent	*gethostbyaddr();
    struct hostent	*gethostent();
    struct netent	*getnetbyname();
    struct netent	*getnetbyaddr();
    struct netent	*getnetent();
    struct servent	*getservbyname();
    struct servent	*getservbyport();
    struct servent	*getservent();
    struct protoent	*getprotobyname();
    struct protoent	*getprotobynumber();
    struct protoent	*getprotoent();
    int		 getnetgrent();

    int sethostent();
    int endhostent();
    int setnetent();
    int endnetent();
    int setservent();
    int endservent();
    int setprotoent();
    int endprotoent();
    int setnetgrent();
    int endnetgrent();
    int rcmd();
    int rcmd_af();
    int rexec();
    int rexec_af();
    int rresvport();
    int rresvport_af();
    int rresvport_addr();
    int ruserok();
    /* BIND */
    struct hostent	*gethostbyname2();
    void		herror();
    char		*hstrerror();
    /* IPv6 prototype definitons */
    int		getaddrinfo();
    void		freeaddrinfo();
    const char	*gai_strerror();
    int		getnameinfo();
    /* END IPv6 prototype definitions */
    /* End BIND */

#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
    /* IPsec algorithm prototype definitions */
    struct ipsecalgent *getalgbyname();
    struct ipsecalgent *getalgbydoi();
    int getdoidomainbyname();
    const char *getdoidomainbynum();
    void freealgent();
    /* END IPsec algorithm prototype definitions */
#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */

#endif	/* __STDC__ */

    /*
     * Error return codes from gethostbyname() and gethostbyaddr()
     * (when using the resolver)
     */

    extern  int h_errno;

#ifdef	_REENTRANT
#ifdef	__STDC__
    extern int	*__h_errno(void);
#else
    extern int	*__h_errno();
#endif	/* __STDC__ */

    /* Only #define h_errno if there is no conflict with other use */
#ifdef	H_ERRNO_IS_FUNCTION
#define	h_errno	(*__h_errno())
#endif	/* NO_H_ERRNO_DEFINE */
#endif	/* _REENTRANT */

    /*
     * Error return codes from gethostbyname() and gethostbyaddr()
     * (left in extern int h_errno).
     */
#define	HOST_NOT_FOUND	1 /* Authoritive Answer Host not found */
#define	TRY_AGAIN	2 /* Non-Authoritive Host not found, or SERVERFAIL */
#define	NO_RECOVERY	3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
#define	NO_DATA		4 /* Valid name, no data record of requested type */

#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
#define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */

    /* BIND */
#define	NETDB_INTERNAL	-1	/* see errno */
#define	NETDB_SUCCESS	0	/* no problem */
    /* End BIND */

#define	MAXHOSTNAMELEN	256

#define	MAXALIASES	35
#define	MAXADDRS	35
#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */

#ifdef	__cplusplus
}
#endif

#endif	/* _NETDB_H */
