text: /*
   * Copyright (C) 1993 AmiTCP/IP Group, <amitcp-group@hut.fi>
   *                    Helsinki University of Technology, Finland.
   *                    All rights reserved.
   * Copyright (C) 2005 Neil Cafferkey
   * Copyright (C) 2005 - 2011 Pavel Fedin
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU Library General Public License
   * version 2 as published by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * Library General Public License for more details.
   *
   * You should have received a copy of the GNU Library General Public
   * License along with this file; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
   * MA 02111-1307, USA.
   *
   */
  
  /*-
   * Copyright (c) 1980, 1983, 1988 Regents of the University of California.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms are permitted
   * provided that: (1) source distributions retain this entire copyright
   * notice and comment, and (2) distributions including binaries display
   * the following acknowledgement:  ``This product includes software
   * developed by the University of California, Berkeley and its contributors''
   * in the documentation or other materials provided with the distribution
   * and in all advertising materials mentioning features or use of this
   * software. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
   */
  
  #ifndef NETDB_H
  #define NETDB_H
  
  #define __BSD_VISIBLE 1
  #include <sys/types.h>
  
  #include <sys/socket.h>     /* for socklen_t */
  
  /*
   * 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 */
  #define	h_addr	h_addr_list[0]	/* address, for backward compatiblity */
  };
  
  /*
   * Assumption here is that a network number
   * fits in 32 bits -- probably a poor one.
   */
  struct	netent {
  	char		*n_name;	/* official name of net */
  	char		**n_aliases;	/* alias list */
  	int		n_addrtype;	/* net address type */
  	unsigned long	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 # */
  };
  
  /*
   * Error return codes from gethostbyname() and gethostbyaddr()
   * (left in extern int h_errno).
   */
  #ifndef KERNEL
  
  #include <bsdsocket/socketbasetags.h>
  #include <proto/socket.h>
  
  static inline int *__get_h_errno_ptr(struct Library *SocketBase)
  {
      int *ptr;
      struct TagItem tags[] = {
      	{SBTM_GETREF(SBTC_HERRNOLONGPTR), (STACKIPTR)&ptr},
      	{TAG_DONE			, 0   }
      };
  
      SocketBaseTagList(tags);
      return ptr;
  }
  
  #define h_errno (*__get_h_errno_ptr(SocketBase))
  
  #endif
  
  #define	HOST_NOT_FOUND	1 /* Authoritative Answer Host not found */
  #define	TRY_AGAIN	2 /* Non-Authoritive 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 */
  #define	NO_ADDRESS	NO_DATA		/* no address, look for MX record */
  
  struct addrinfo {
    long		ai_flags;		/* AI_PASSIVE, AI_CANONNAME */
    long		ai_family;		/* PF_xxx */
    long		ai_socktype;		/* SOCK_xxx */
    long		ai_protocol;		/* IPPROTO_xxx for IPv4 and IPv6 */
    size_t	   ai_addrlen;		/* length of ai_addr */
    char		*ai_canonname;		/* canonical name for host */
    struct sockaddr	*ai_addr;	/* binary address */
    struct addrinfo	*ai_next;	/* next structure in linked list */
  };
  
  			/* following for getaddrinfo() */
  #define	AI_PASSIVE	1      /* socket is intended for bind() + listen() */
  #define	AI_CANONNAME	2      /* return canonical name */
  
  			/* following for getnameinfo() */
  #define	NI_MAXHOST	  1025	/* max hostname returned */
  #define	NI_MAXSERV	    32	/* max service name returned */
  
  #define	NI_NOFQDN	     1	/* do not return FQDN */
  #define	NI_NUMERICHOST   2	/* return numeric form of hostname */
  #define	NI_NAMEREQD	     4	/* return error if hostname not found */
  #define	NI_NUMERICSERV   8	/* return numeric form of service name */
  #define	NI_DGRAM	    16	/* datagram service for getservbyname() */
  
  			/* error returns */
  #define	EAI_ADDRFAMILY	 1	/* address family for host 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 host */
  #define	EAI_NONAME	 8	/* host nor service provided, or not known */
  #define	EAI_SERVICE	 9	/* service not supported for ai_socktype */
  #define	EAI_SOCKTYPE	10	/* ai_socktype not supported */
  #define	EAI_SYSTEM	11	/* system error returned in errno */
  
  
  /* Flags for ResetNetDB() */
  #define NETDB_IFF_CLEANOLD   1
  #define NETDB_IFF_MODIFYOLD  2
  #define NETDB_IFF_ADDNEW     4
  
  #endif /* !NETDB_H */
  
  