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// -*-c++-*-
/* $Id: dnsparse.h,v 1.5 1998/12/04 00:22:53 dm Exp $ */
/*
*
* Copyright (C) 1998 David Mazieres (dm@uun.org)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or (at
* your option) any later version.
*
* 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#ifndef _DNSPARSE_H_
#define _DNSPARSE_H_ 1
#include "dns.h"
struct resrec {
struct rd_mx {
u_int16_t mx_pref;
char mx_exch[MAXDNAME];
};
struct rd_soa {
char soa_mname[MAXDNAME];
char soa_rname[MAXDNAME];
u_int32_t soa_serial;
u_int32_t soa_refresh;
u_int32_t soa_retry;
u_int32_t soa_expire;
u_int32_t soa_minimum;
};
char rr_name[MAXDNAME];
u_int16_t rr_class;
u_int16_t rr_type;
u_int32_t rr_ttl;
u_int16_t rr_rdlen;
union {
in_addr rr_a;
char rr_cname[MAXDNAME];
rd_soa rr_soa;
char rr_ptr[MAXDNAME];
rd_mx rr_mx;
char rr_txt[MAXDNAME];
};
};
struct question {
char q_name[MAXDNAME];
u_int16_t q_class;
u_int16_t q_type;
};
class dnsparse {
dnsparse ();
const u_char *const buf;
const u_char *const eom;
const u_char *anp;
static int mxrec_cmp (const void *, const void *);
public:
int error;
const HEADER *const hdr;
const u_int ancount;
dnsparse (const u_char *buf, size_t len);
const u_char *getqp () { return hdr ? buf + sizeof (HEADER) : NULL; }
const u_char *getanp () { return anp; }
bool qparse (question *);
bool qparse (const u_char **, question *);
bool rrparse (const u_char **, resrec *);
ptr<hostent> tohostent ();
ptr<mxlist> tomxlist ();
};
#endif /* !_DNSPARSE_H_ */
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