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 amoreau
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/*----------------------------------------------------------------
* dns.h - definitions for the DNS interface in wnsck.c (internal)
*----------------------------------------------------------------
* libnet is (c) Copyright Chad Catlett and George Foot 1997-1998
*
* Please look in `docs' for details, documentation and
* distribution conditions.
*/
#ifndef _gf_included_dns_h
#define _gf_included_dns_h
/* DNS RR types */
#define DNS_TYPE_A 1
#define DNS_TYPE_NS 2
#define DNS_TYPE_MD 3
#define DNS_TYPE_MF 4
#define DNS_TYPE_CNAME 5
#define DNS_TYPE_SOA 6
#define DNS_TYPE_MB 7
#define DNS_TYPE_MG 8
#define DNS_TYPE_MR 9
#define DNS_TYPE_NULL 10
#define DNS_TYPE_WKS 11
#define DNS_TYPE_PTR 12
#define DNS_TYPE_HINFO 13
#define DNS_TYPE_MINFO 14
#define DNS_TYPE_MX 15
#define DNS_TYPE_TXT 16
#define DNS_TYPE_AXFR 252
#define DNS_TYPE_MAILB 253
#define DNS_TYPE_MAILA 254
#define DNS_TYPE_ANY 255
/* DNS RR classes */
#define DNS_CLASS_IN 1
#define DNS_CLASS_CS 2
#define DNS_CLASS_CH 3
#define DNS_CLASS_HS 4
#define DNS_CLASS_ANY 255
/* DNS communication port (UDP or TCP) */
#define IPPORT_DNS 53
struct dns_query {
char *qname;
int qtype,qclass;
};
struct dns_rr {
char *name;
int type,_class,ttl,rdlength;
char *rdata;
union {
struct { long address; } a;
struct { char *cname; } cname;
struct { char *cpu,*os; } hinfo;
struct { char *madname; } mb;
struct { char *madname; } md;
struct { char *madname; } mf;
struct { char *mgmname; } mg;
struct { char *rmailbx,*emailbx; } minfo;
struct { char *newname; } mr;
struct { int preference; char *exchange; } mx;
struct { char *nsdname; } ns;
struct { char *data; } null;
struct { char *ptrdname; } ptr;
struct { char *mname,*rname; unsigned serial,refresh,retry,expire,minimum; } soa;
struct { char **txt_data; } txt;
struct { int address; unsigned char protocol; int bitmapsize; char *bitmap; } wks;
} data;
};
union dns_flags {
unsigned short i;
struct {
int rd:1;
int tc:1;
int aa:1;
int opcode:4;
int qr:1;
int rcode:4;
int z:3;
int ra:1;
} f;
};
struct dns_packet {
int nameserver;
int id;
union dns_flags flags;
int qdcount,ancount,nscount,arcount;
struct dns_query *questions;
struct dns_rr *answers;
struct dns_rr *authorities;
struct dns_rr *additionals;
};
#endif
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