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/*
* $Id: rfc1035.h,v 1.10 2006/04/28 10:17:18 hno Exp $
*
* AUTHOR: Duane Wessels
*
* SQUID Web Proxy Cache http://www.squid-cache.org/
* ----------------------------------------------------------
*
* Squid is the result of efforts by numerous individuals from
* the Internet community; see the CONTRIBUTORS file for full
* details. Many organizations have provided support for Squid's
* development; see the SPONSORS file for full details. Squid is
* Copyrighted (C) 2001 by the Regents of the University of
* California; see the COPYRIGHT file for full details. Squid
* incorporates software developed and/or copyrighted by other
* sources; see the CREDITS file for full details.
*
* 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 of the License, 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, USA.
*
*/
#ifndef SQUID_RFC1035_H
#define SQUID_RFC1035_H
#include "config.h"
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#if HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
/* rfc1035 - DNS */
#define RFC1035_MAXHOSTNAMESZ 256
typedef struct _rfc1035_rr rfc1035_rr;
struct _rfc1035_rr {
char name[RFC1035_MAXHOSTNAMESZ];
unsigned short type;
unsigned short class;
unsigned int ttl;
unsigned short rdlength;
char *rdata;
};
typedef struct _rfc1035_query rfc1035_query;
struct _rfc1035_query {
char name[RFC1035_MAXHOSTNAMESZ];
unsigned short qtype;
unsigned short qclass;
};
typedef struct _rfc1035_message rfc1035_message;
struct _rfc1035_message {
unsigned short id;
unsigned int qr:1;
unsigned int opcode:4;
unsigned int aa:1;
unsigned int tc:1;
unsigned int rd:1;
unsigned int ra:1;
unsigned int rcode:4;
unsigned short qdcount;
unsigned short ancount;
unsigned short nscount;
unsigned short arcount;
rfc1035_query *query;
rfc1035_rr *answer;
};
extern ssize_t rfc1035BuildAQuery(const char *hostname,
char *buf,
size_t sz,
unsigned short qid,
rfc1035_query * query);
extern ssize_t rfc1035BuildPTRQuery(const struct in_addr,
char *buf,
size_t sz,
unsigned short qid,
rfc1035_query * query);
extern void rfc1035SetQueryID(char *, unsigned short qid);
extern int rfc1035MessageUnpack(const char *buf,
size_t sz,
rfc1035_message ** answer);
extern int rfc1035QueryCompare(const rfc1035_query *, const rfc1035_query *);
extern void rfc1035MessageDestroy(rfc1035_message * message);
extern int rfc1035_errno;
extern const char *rfc1035_error_message;
#define RFC1035_TYPE_A 1
#define RFC1035_TYPE_CNAME 5
#define RFC1035_TYPE_PTR 12
#define RFC1035_CLASS_IN 1
#endif /* SQUID_RFC1035_H */
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