kernel/include/net/dns.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2008  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   5  *
   6  *  This program is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20
  21 #ifndef _DNS_H
  22 #define _DNS_H
  23
  24 #define DEFAULT_DNS_PORT        53
  25
  26 #define __PACKED__ __attribute__ ((__packed__))
  27
  28 typedef struct dns_cache_context {
  29         struct dns_cache_context *next, *prev;
  30
  31         unsigned char type;
  32         void *ip;
  33         unsigned char len;
  34         char *hostname;
  35 } dns_cache_t;
  36
  37 typedef struct proto_dns_answer_t {
  38         unsigned short name;
  39         unsigned short type;
  40         unsigned short aclass;
  41         unsigned ttl;
  42         unsigned short dlen;
  43 } __PACKED__ proto_dns_answer_t;
  44
  45 typedef struct proto_dns_t {
  46         unsigned short trans;
  47         unsigned short flags;
  48         unsigned short question;
  49         unsigned short answer;
  50         unsigned short auth;
  51         unsigned short add;
  52 } __PACKED__ proto_dns_t;
  53
  54 /* externs */
  55 extern int dns_send_request (char *hostname, void *ip, unsigned char type);
  56 extern int dns_cache_add (char *hostname, unsigned char len, void *ip, unsigned char type);
  57 extern int dns_cache_get (char *hostname, void *ip, unsigned char type);
  58 extern unsigned init_net_proto_dns ();
  59
  60 #endif