/*-------------------------------------------------------------------------
 *
 * getaddrinfo.h
 *	  Support getaddrinfo() on platforms that don't have it.
 *
 *
 * Note: we use our own routines on platforms that don't HAVE_STRUCT_ADDRINFO,
 * whether or not the library routine getaddrinfo() can be found.  This
 * policy is needed because on some platforms a manually installed libbind.a
 * may provide getaddrinfo(), yet the system headers may not provide the
 * struct definitions needed to call it.  To avoid conflict with the libbind
 * definition in such cases, we rename our routines to pg_xxx() via macros.
 *
 * This code will also work on platforms where struct addrinfo is defined
 * in the system headers but no getaddrinfo() can be located.
 *
 * Copyright (c) 2003, PostgreSQL Global Development Group
 *
 * $Id: getaddrinfo.h,v 1.4 2003/06/12 08:02:56 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef GETADDRINFO_H
#define GETADDRINFO_H

#if !defined(WIN32) || (!defined(_MSC_VER) && !defined(__BORLANDC__))
#include <sys/socket.h>
#include <netdb.h>
#endif


#ifndef HAVE_STRUCT_ADDRINFO

struct addrinfo {
	int     ai_flags;
	int     ai_family;
	int     ai_socktype;
	int     ai_protocol;
	size_t  ai_addrlen;
	struct sockaddr *ai_addr;
	char   *ai_canonname;
	struct addrinfo *ai_next;
};

#define EAI_BADFLAGS		-1
#define EAI_NONAME		-2
#define EAI_AGAIN		-3
#define EAI_FAIL		-4
#define EAI_FAMILY		-6
#define EAI_SOCKTYPE		-7
#define EAI_SERVICE		-8
#define EAI_MEMORY		-10
#define EAI_SYSTEM		-11

#define AI_PASSIVE		0x0001
#define AI_NUMERICHOST	0x0004

#define NI_NUMERICHOST	1
#define NI_NUMERICSERV	2

#endif /* HAVE_STRUCT_ADDRINFO */

#ifndef	NI_MAXHOST
#define NI_MAXHOST	1025
#define NI_MAXSERV	32
#endif



#ifndef HAVE_GETADDRINFO

/* Rename private copies per comments above */
#ifdef getaddrinfo
#undef getaddrinfo
#endif
#define getaddrinfo pg_getaddrinfo

#ifdef freeaddrinfo
#undef freeaddrinfo
#endif
#define freeaddrinfo pg_freeaddrinfo

#ifdef gai_strerror
#undef gai_strerror
#endif
#define gai_strerror pg_gai_strerror

#ifdef getnameinfo
#undef getnameinfo
#endif
#define	getnameinfo pg_getnameinfo

extern int getaddrinfo(const char *node, const char *service,
					   const struct addrinfo *hints, struct addrinfo **res);
extern void freeaddrinfo(struct addrinfo *res);
extern const char *gai_strerror(int errcode);
extern int getnameinfo(const struct sockaddr *sa, int salen,
			char *node, int nodelen,
			char *service, int servicelen, int flags);

#endif /* HAVE_GETADDRINFO */

#endif /* GETADDRINFO_H */