/*-
 * 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. 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--
 */

/*
 *      @(#)netdb.h     8.1 (Berkeley) 6/2/93
 *      From: Id: netdb.h,v 8.9 1996/11/19 08:39:29 vixie Exp $
 * $FreeBSD: src/include/netdb.h,v 1.45 2009/03/14 20:04:28 das Exp $
 */

#ifndef _NETDB_H_
#define _NETDB_H_

#include <sys/cdefs.h>
#include <machine/stdint.h>     /* for __size_t, __socklen_t, __uint*_t */

#ifndef _IN_ADDR_T_DECLARED
typedef __uint32_t      in_addr_t;      /* base type for internet address */
#define _IN_ADDR_T_DECLARED
#endif

#ifndef _IN_PORT_T_DECLARED
typedef __uint16_t      in_port_t;
#define _IN_PORT_T_DECLARED
#endif

#ifndef _SIZE_T_DECLARED
typedef __size_t        size_t;
#define _SIZE_T_DECLARED
#endif

#ifndef _SOCKLEN_T_DECLARED
typedef __socklen_t     socklen_t;
#define _SOCKLEN_T_DECLARED
#endif

#ifndef _UINT32_T_DECLARED
typedef __uint32_t      uint32_t;
#define _UINT32_T_DECLARED
#endif

#ifndef _PATH_HEQUIV
# define        _PATH_HEQUIV    "/etc/hosts.equiv"
#endif
#define _PATH_HOSTS     "/etc/hosts"
#define _PATH_NETWORKS  "/etc/networks"
#define _PATH_PROTOCOLS "/etc/protocols"
#define _PATH_SERVICES  "/etc/services"

#if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE < 200809)
#define h_errno (*__h_errno())
#endif

/*
 * 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).
 */
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 */
#if __BSD_VISIBLE
#define h_addr  h_addr_list[0]  /* address, for backward compatibility */
#endif
};

struct netent {
        char            *n_name;        /* official name of net */
        char            **n_aliases;    /* alias list */
        int             n_addrtype;     /* net address type */
        uint32_t        n_net;          /* network # */
};

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

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

struct addrinfo {
        int     ai_flags;       /* AI_PASSIVE, AI_CANONNAME, AI_NUMERICHOST */
        int     ai_family;      /* PF_xxx */
        int     ai_socktype;    /* SOCK_xxx */
        int     ai_protocol;    /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
        socklen_t ai_addrlen;   /* length of ai_addr */
        char    *ai_canonname;  /* canonical name for hostname */
        struct  sockaddr *ai_addr;      /* binary address */
        struct  addrinfo *ai_next;      /* next structure in linked list */
};

/*
 * Error return codes from gethostbyname() and gethostbyaddr()
 * (left in h_errno).
 */

#if __BSD_VISIBLE
#define NETDB_INTERNAL  -1      /* see errno */
#define NETDB_SUCCESS   0       /* no problem */
#endif
#if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE < 200809)
#define HOST_NOT_FOUND  1 /* Authoritative Answer Host not found */
#define TRY_AGAIN       2 /* Non-Authoritative 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 */
#endif
#if __BSD_VISIBLE
#define NO_ADDRESS      NO_DATA         /* no address, look for MX record */
#endif

/*
 * Error return codes from getaddrinfo()
 */
#if __BSD_VISIBLE
/* XXX deprecated */
#define EAI_ADDRFAMILY   1      /* address family for hostname not supported */
#endif
#define EAI_AGAIN        2      /* temporary failure in name resolution */
#define EAI_BADFLAGS     3      /* invalid value for ai_flags */
#define EAI_FAIL         4      /* non-recoverable failure in name resolution */
#define EAI_FAMILY       5      /* ai_family not supported */
#define EAI_MEMORY       6      /* memory allocation failure */
#if __BSD_VISIBLE
/* XXX deprecated */
#define EAI_NODATA       7      /* no address associated with hostname */
#endif
#define EAI_NONAME       8      /* hostname nor servname provided, or 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 returned in errno */
#if __BSD_VISIBLE
#define EAI_BADHINTS    12      /* invalid value for hints */
#define EAI_PROTOCOL    13      /* resolved protocol is unknown */
#endif
#define EAI_OVERFLOW    14      /* argument buffer overflow */
#if __BSD_VISIBLE
#define EAI_MAX         15
#endif

/*
 * Flag values for getaddrinfo()
 */
#define AI_PASSIVE      0x00000001 /* get address to use bind() */
#define AI_CANONNAME    0x00000002 /* fill ai_canonname */
#define AI_NUMERICHOST  0x00000004 /* prevent host name resolution */
#define AI_NUMERICSERV  0x00000008 /* prevent service name resolution */
#if __BSD_VISIBLE
/* valid flags for addrinfo (not a standard def, apps should not use it) */
#define AI_MASK \
    (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST | AI_NUMERICSERV | \
    AI_ADDRCONFIG)
#endif

#define AI_ALL          0x00000100 /* IPv6 and IPv4-mapped (with AI_V4MAPPED) */
#if __BSD_VISIBLE
#define AI_V4MAPPED_CFG 0x00000200 /* accept IPv4-mapped if kernel supports */
#endif
#define AI_ADDRCONFIG   0x00000400 /* only if any address is assigned */
#define AI_V4MAPPED     0x00000800 /* accept IPv4-mapped IPv6 address */
#if __BSD_VISIBLE
/* special recommended flags for getipnodebyname */
#define AI_DEFAULT      (AI_V4MAPPED_CFG | AI_ADDRCONFIG)

/*
 * Constants for getnameinfo()
 */
#define NI_MAXHOST      1025
#define NI_MAXSERV      32
#endif

/*
 * Flag values for getnameinfo()
 */
#define NI_NOFQDN       0x00000001
#define NI_NUMERICHOST  0x00000002
#define NI_NAMEREQD     0x00000004
#define NI_NUMERICSERV  0x00000008
#define NI_DGRAM        0x00000010
#if __BSD_VISIBLE
#define NI_WITHSCOPEID  0x00000020      /* XXX deprecated */
#endif
#define NI_NUMERICSCOPE 0x00000040

#if __BSD_VISIBLE
/*
 * Scope delimit character
 */
#define SCOPE_DELIMITER '%'
#endif

__BEGIN_DECLS
void            endhostent(void);
void            endnetent(void);
void            endprotoent(void);
void            endservent(void);
#if __BSD_VISIBLE || (__POSIX_VISIBLE && __POSIX_VISIBLE < 200809)
struct hostent  *gethostbyaddr(const void *, socklen_t, int);
struct hostent  *gethostbyname(const char *);
#endif
struct hostent  *gethostent(void);
struct netent   *getnetbyaddr(uint32_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);
void            sethostent(int);
/* void         sethostfile(const char *); */
void            setnetent(int);
void            setprotoent(int);
int             getaddrinfo(const char * __restrict, const char * __restrict,
                    const struct addrinfo * __restrict,
                    struct addrinfo ** __restrict);
/* XXX nodeLen and serviceLen should be socklen_t */
int             getnameinfo(const struct sockaddr * __restrict, socklen_t,
                    char * __restrict, size_t, char * __restrict, size_t, int);
void            freeaddrinfo(struct addrinfo *);
const char      *gai_strerror(int);
void            setservent(int);

#if __BSD_VISIBLE
void            endnetgrent(void);
void            freehostent(struct hostent *);
int             gethostbyaddr_r(const void *, socklen_t, int, struct hostent *,
                                char *, size_t, struct hostent **, int *);
int             gethostbyname_r(const char *, struct hostent *, char *, size_t,
                                struct hostent **, int *);
struct hostent  *gethostbyname2(const char *, int);
int             gethostbyname2_r(const char *, int, struct hostent *, char *,
                                 size_t, struct hostent **, int *);
int             gethostent_r(struct hostent *, char *, size_t,
                             struct hostent **, int *);
struct hostent  *getipnodebyaddr(const void *, size_t, int, int *);
struct hostent  *getipnodebyname(const char *, int, int, int *);
int             getnetbyaddr_r(uint32_t, int, struct netent *, char *, size_t,
                               struct netent **, int *);
int             getnetbyname_r(const char *, struct netent *, char *, size_t,
                               struct netent **, int *);
int             getnetent_r(struct netent *, char *, size_t, struct netent **,
                            int *);
int             getnetgrent(char **, char **, char **);
int             getprotobyname_r(const char *, struct protoent *, char *,
                                 size_t, struct protoent **);
int             getprotobynumber_r(int, struct protoent *, char *, size_t,
                                   struct protoent **);
int             getprotoent_r(struct protoent *, char *, size_t,
                              struct protoent **);
int             getservbyname_r(const char *, const char *, struct servent *,
                                char *, size_t, struct servent **);
int             getservbyport_r(int, const char *, struct servent *, char *,
                                size_t, struct servent **);
int             getservent_r(struct servent *, char *, size_t,
                             struct servent **);
void            herror(const char *);
const char      *hstrerror(int);
int             innetgr(const char *, const char *, const char *, const char *);
void            setnetgrent(const char *);
#endif


/*
 * PRIVATE functions specific to the FreeBSD implementation
 */

/* DO NOT USE THESE, THEY ARE SUBJECT TO CHANGE AND ARE NOT PORTABLE!!! */
int     * __h_errno(void);
__END_DECLS

#endif /* !_NETDB_H_ */