/*
 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
 * 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 project 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 PROJECT 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 PROJECT 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.
 */

#ifndef HAVE_GETADDRINFO

/*
 * Error return codes from getaddrinfo()
 */
#ifdef EAI_ADDRFAMILY
/* If this is defined, there is a conflicting implementation
 in the C library, which can't be used for some reason.
 Make sure it won't interfere with this emulation. */

#undef EAI_ADDRFAMILY
#undef EAI_AGAIN
#undef EAI_BADFLAGS
#undef EAI_FAIL
#undef EAI_FAMILY
#undef EAI_MEMORY
#undef EAI_NODATA
#undef EAI_NONAME
#undef EAI_SERVICE
#undef EAI_SOCKTYPE
#undef EAI_SYSTEM
#undef EAI_BADHINTS
#undef EAI_PROTOCOL
#undef EAI_MAX
#undef getaddrinfo
#define getaddrinfo fake_getaddrinfo
#endif /* EAI_ADDRFAMILY */

#define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
#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 */
#define EAI_NODATA 7 /* no address associated with hostname */
#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 */
#define EAI_BADHINTS 12
#define EAI_PROTOCOL 13
#define EAI_MAX 14

/*
 * Flag values for getaddrinfo()
 */
#ifdef AI_PASSIVE
#undef AI_PASSIVE
#undef AI_CANONNAME
#undef AI_NUMERICHOST
#undef AI_MASK
#undef AI_ALL
#undef AI_V4MAPPED_CFG
#undef AI_ADDRCONFIG
#undef AI_V4MAPPED
#undef AI_DEFAULT
#endif /* AI_PASSIVE */

#define AI_PASSIVE 0x00000001 /* get address to use bind() */
#define AI_CANONNAME 0x00000002 /* fill ai_canonname */
#define AI_NUMERICHOST 0x00000004 /* prevent name resolution */
/* valid flags for addrinfo */
#define AI_MASK (AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST)

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

#endif /* !HAVE_GETADDRINFO */

#ifndef HAVE_GETNAMEINFO

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

/*
 * Flag values for getnameinfo()
 */
#ifndef NI_NOFQDN
#define NI_NOFQDN 0x00000001
#define NI_NUMERICHOST 0x00000002
#define NI_NAMEREQD 0x00000004
#define NI_NUMERICSERV 0x00000008
#define NI_DGRAM 0x00000010
#endif /* !NI_NOFQDN */

#endif /* !HAVE_GETNAMEINFO */

#ifndef HAVE_ADDRINFO
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 */
 size_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 */
};
#endif /* !HAVE_ADDRINFO */

#ifndef HAVE_SOCKADDR_STORAGE
/*
 * RFC 2553: protocol-independent placeholder for socket addresses
 */
#define _SS_MAXSIZE 128
#define _SS_ALIGNSIZE (sizeof(long long))
#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(u_char) * 2)
#define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(u_char) * 2 - \
 _SS_PAD1SIZE - _SS_ALIGNSIZE)

struct sockaddr_storage {
#ifdef HAVE_SOCKADDR_SA_LEN
 unsigned char ss_len; /* address length */
 unsigned char ss_family; /* address family */
#else
 unsigned short ss_family; /* address family */
#endif /* HAVE_SOCKADDR_SA_LEN */
 char __ss_pad1[_SS_PAD1SIZE];
 long long __ss_align; /* force desired structure storage alignment */
 char __ss_pad2[_SS_PAD2SIZE];
};
#endif /* !HAVE_SOCKADDR_STORAGE */

#ifdef __cplusplus
extern "C" {
#endif
extern void freehostent(struct hostent *);
#ifdef __cplusplus
}
#endif