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  1. /*
  2.  * Copyright (c) 2009 Lukas Mejdrech
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup netdb
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  *  Structures and interfaces according to the BSD netdb.h file.
  35.  */
  36.  
  37. #ifndef __NET_NETDB_H__
  38. #define __NET_NETDB_H__
  39.  
  40. #include <sys/types.h>
  41.  
  42. /** Structure returned by network data base library.
  43.  *  All addresses are supplied in host order, and returned in network order (suitable for use in system calls).
  44.  */
  45. struct  hostent {
  46.     /** Official host name.
  47.      */
  48.     char *  h_name;
  49.     /** Alias list.
  50.      */
  51.     char ** h_aliases;
  52.     /** Host address type.
  53.      */
  54.     int     h_addrtype;
  55.     /** Address length.
  56.      */
  57.     int     h_length;
  58.     /** List of addresses from name server.
  59.      */
  60.     char ** h_addr_list;
  61.     /** Address, for backward compatiblity.
  62.      */
  63. #define h_addr  h_addr_list[ 0 ]
  64. };
  65.  
  66. #define HOST_NOT_FOUND  1 /* Authoritative Answer Host not found */
  67. #define TRY_AGAIN   2 /* Non-Authoritive Host not found, or SERVERFAIL */
  68. #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
  69. #define NO_DATA     4 /* Valid name, no data record of requested type */
  70. #define NO_ADDRESS  NO_DATA     /* no address, look for MX record */
  71.  
  72. struct hostent *    gethostbyaddr( const void * address, int len, int type );
  73. struct hostent *    gethostbyname( const char * name );
  74.  
  75. #endif
  76.  
  77. /** @}
  78.  */
  79.