/*

 * 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

#ifdef HAVE_LONG_LONG

#define _SS_ALIGNSIZE	(sizeof(PY_LONG_LONG))

#else

#define _SS_ALIGNSIZE	(sizeof(double))

#endif /* HAVE_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];

#ifdef HAVE_LONG_LONG

	PY_LONG_LONG __ss_align;	/* force desired structure storage alignment */

#else

	double __ss_align;	/* force desired structure storage alignment */

#endif /* HAVE_LONG_LONG */

	char	__ss_pad2[_SS_PAD2SIZE];

};

#endif /* !HAVE_SOCKADDR_STORAGE */

#ifdef __cplusplus

extern "C" {

#endif

extern void freehostent Py_PROTO((struct hostent *));

#ifdef __cplusplus

}

#endif