Make DNS parser more forgiving, allowing for gaps in the domainname

[thirdparty/squid.git] / include / rfc1035.h

/*
 * $Id: rfc1035.h,v 1.11 2005/04/18 21:52:40 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 250
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;
};
SQUIDCEXTERN unsigned short rfc1035BuildAQuery(const char *hostname,
    char *buf,
    size_t * szp);
SQUIDCEXTERN unsigned short rfc1035BuildPTRQuery(const struct IN_ADDR,
    char *buf,
    size_t * szp);
SQUIDCEXTERN unsigned short rfc1035RetryQuery(char *);
SQUIDCEXTERN int rfc1035AnswersUnpack(const char *buf,
    size_t sz,
    rfc1035_rr ** records,
    unsigned short *id);
SQUIDCEXTERN void rfc1035RRDestroy(rfc1035_rr * rr, int n);
SQUIDCEXTERN int rfc1035_errno;
SQUIDCEXTERN const char *rfc1035_error_message;

#define RFC1035_TYPE_A 1
#define RFC1035_TYPE_PTR 12
#define RFC1035_CLASS_IN 1

#endif /* SQUID_RFC1035_H */