www.pudn.com > common-1.2.8.zip > addrinfo.h

/* 
 * 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. 
 */ 
 
/* $Id: addrinfo.h,v 1.1 2000/03/03 13:44:57 piers Exp $ */ 
 
#ifndef HAVE_ADDRINFO 
 
/* 
 * Error return codes from getaddrinfo() 
 */ 
#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 
 
/* internal error */ 
#define	NETDB_INTERNAL	-1	/* see errno */ 
 
/* 
 * 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 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) 
 
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 */ 
}; 
 
extern void freeaddrinfo __P((struct addrinfo *)); 
extern void freehostent __P((struct hostent *)); 
extern char *gai_strerror __P((int)); 
extern int getaddrinfo __P((const char *, const char *, 
			    const struct addrinfo *, struct addrinfo **)); 
extern int getnameinfo __P((const struct sockaddr *, size_t, char *, 
			    size_t, char *, size_t, int)); 
extern struct hostent *getipnodebyaddr __P((const void *, size_t, int, int *)); 
extern struct hostent *getipnodebyname __P((const char *, int, int, int *)); 
extern int inet_pton __P((int, const char *, void *)); 
extern const char *inet_ntop __P((int, const void *, char *, size_t)); 
#endif /* HAVE_ADDRINFO */ 
 
/* 
 * Constants for getnameinfo() 
 */ 
#ifndef NI_MAXHOST 
#define	NI_MAXHOST	1025 
#endif 
#ifndef NI_MAXSERV 
#define	NI_MAXSERV	32 
#endif 
 
/* 
 * Flag values for getnameinfo() 
 */ 
#ifndef NI_NOFQDN 
#define	NI_NOFQDN	0x00000001 
#endif 
#ifndef NI_NUMERICHOST 
#define	NI_NUMERICHOST	0x00000002 
#endif 
#ifndef NI_NAMEREQD 
#define	NI_NAMEREQD	0x00000004 
#endif 
#ifndef NI_NUMERICSERV 
#define	NI_NUMERICSERV	0x00000008 
#endif 
#ifndef NI_DGRAM 
#define	NI_DGRAM	0x00000010 
#endif